JP2000351022A - Drawing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawing device capable of improving the drawing precision by preventing degradation in the drawing accuracy caused by the deviation of a work with a simple configuration. SOLUTION: This drawing device comprises a revolving means to rotate a forming roller 1 so as to relatively revolve with respect to a work W, a moving means 3 to relatively move the forming roller 1 and the work W in the axial direction and in the radial direction of the axis of revolution, a chuck 4 to fix and hold the work W, a controlling means to monitoring the presence/ absence of the movement of the work W by the forming force during the forming and control the drawing based on the presence/absence of the movement of the work W, a positioning means 5 to variably position the work W according to the size of the work, a cutter 6 to cut the drawn work W, and a cut portion delivering means 7 to receive and carry out a cut portion separated from the work W. The controlling means controls the device to stop when the work W is moved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing apparatus, and more particularly, to a drawing apparatus for drawing a workpiece by a forming roller movable in three orthogonal directions.

[0002]

2. Description of the Related Art Conventionally, while a forming roller abuts on a work and is rotated so as to revolve relatively, the revolving diameter of the forming roller with respect to the work is changed. Is moved in the direction of the revolving axis, that is, the workpiece is drawn by a forming roller movable in three orthogonal directions.

[0003] A drawing apparatus used for performing such drawing is generally provided with a chuck for fixing and holding a work. Conventionally, when performing drawing processing on works of different sizes, the amount (length) to be inserted into the chuck is adjusted according to the size of the work, or a predetermined amount is inserted into the chuck. The work locus of the forming roller is programmed to be changed according to the size of the work.

[0004] On the other hand, the length of the drawn workpiece changes in the axial direction. For this reason, a cutter is provided in the drawing apparatus, and the work is cut by the cutter to a desired length.

[0005]

However, the forming roller is brought into contact with the work fixed to the chuck and is relatively revolved, and is moved in the axial direction while the revolving diameter is changed to perform drawing. In some cases, when the fixing force of the chuck is reduced due to a failure of the chuck or the like, the work is moved by the force to be moved in the axial direction (deviation), and the drawing accuracy is deteriorated. There has been a problem that it may fall out of the chuck and fall off.

Further, when performing drawing processing on works of different sizes, it is extremely time-consuming to position the work on the chuck or change the program of the movement locus of the forming roller according to the size of the work. In addition, there has been a problem that the precision of the drawing process on the work is reduced.

Further, in the conventional drawing apparatus, when a work whose axial length has been changed by drawing is cut to a predetermined length, the work is relatively rotated while the cutter is pressed against the work. In addition, when a workpiece (cut product) not fixed to the cut chuck is cut off and falls, there is a problem that the work rolls and scatters on a floor or the like due to its relative rotation.

[0008] The present invention has been made in view of the above problems, and it is possible to prevent a decrease in drawing accuracy due to a deviation of a work with a simple configuration, and thus to improve drawing accuracy. An object of the present invention is to provide a drawing apparatus. Further, the present invention has been made in view of the above-described problems, and a simple structure can easily and accurately position the workpiece in accordance with the size of the work, and therefore, can improve the drawing accuracy. It is an object to provide a processing device. Further, the present invention has been made in view of the above problems, and when cutting a workpiece to a predetermined length by a cutter, it is possible to reliably carry out a cut product cut with a simple configuration without scattering. It is an object of the present invention to provide a drawing apparatus capable of performing the drawing.

[0009]

According to a first aspect of the present invention, there is provided a drawing apparatus for performing drawing on a workpiece by a forming roller movable in three orthogonal directions to achieve the above object. And a control device for monitoring the movement of the workpiece due to the molding force at the time of molding and controlling the drawing.

According to a second aspect of the present invention, in order to achieve the above object, the drawing apparatus according to the first aspect further comprises positioning means for variably positioning the work according to the size of the work. It is assumed that.

According to a third aspect of the present invention, there is provided a drawing apparatus according to the first or second aspect of the present invention, wherein the cutter cuts the drawn workpiece.
And a cutout dispensing means for receiving and dispensing cutouts separated from the work.

In the drawing apparatus according to the first aspect, the forming roller is repeatedly moved in the axial direction and the radial direction of the work while rotating so that the forming roller is brought into contact with the work and relatively revolves. Perform drawing. When performing the drawing process, the control device monitors whether or not the work is moved by the forming force at the time of forming, and performs control such as stopping the drawing process when the work is moved carelessly.

In the drawing apparatus according to a second aspect, in the invention according to the first aspect, when works of different sizes are fixed for performing the drawing, the work is positioned by the positioning means in accordance with the size of the work. Variable positioning.

According to a third aspect of the present invention, in the first or second aspect of the present invention, when the drawn workpiece is cut into a predetermined size by a cutter, the cut product dispensing means is provided with a workpiece. Receives and removes cut products separated from

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a drawing apparatus according to the present invention will be described in detail with reference to FIGS. In this embodiment, a case where the diameter of a hollow cylindrical workpiece W is reduced will be described. In the drawings, the same reference numerals denote the same or corresponding parts.

The processing apparatus according to the present invention generally comprises a forming roller 1
Revolving drive means 2 for rotating the workpiece W relatively to the workpiece W, moving means 3 for relatively moving the forming roller 1 and the workpiece W in the axial direction and the radial direction of the revolving shaft, and A fixing means 4 for fixing and holding; a control means (described later) for monitoring the presence or absence of movement of the work W due to the forming force at the time of forming and controlling the drawing based on the movement of the work W; Work W according to size
There is provided a positioning means 5 for variably positioning the workpiece W, a cutter 6 for cutting the drawn work W, and a cut product discharging means 7 for receiving and carrying out the cut product Wc separated from the work W.

In this embodiment, a chuck 4 is employed as a means for fixing the work W, and the revolving drive means 2 comprises a means for rotating and driving the work W fixedly held by the chuck 4. The forming roller 1 is supported by the moving means 3 so as to move in the axial direction and the radial direction of the revolving shaft with respect to the workpiece W. However,
The present invention is not limited to this embodiment. For example, the revolving drive unit revolves the forming roller 1 with respect to the fixed work W, and the moving unit revolves with respect to the forming roller 1 along the axis of the revolving shaft. The work W may be configured to move in the direction and the radial direction. Here, the axis C of the revolving shaft
Means a rotation center axis of the work W or the like, and the axial direction means a direction parallel to the axis C of the revolving axis. The radial direction of the revolving shaft means a direction substantially perpendicular to the axial direction.

As shown in FIG. 1, a hollow rotating shaft 11 is rotatably supported on a base 10 via a bearing 12, and a motor 13 whose rotation speed can be controlled is provided on an upper portion. I have. Front end of rotating shaft 11 (left end in FIG. 1)
A relatively large-diameter pulley 14 is provided on the surface, and a relatively small-diameter pulley 15 is provided on the drive shaft of the motor 13. A belt 16 is wound between the two pulleys 14 and 15. ing. Further, a chuck 4 is provided in front of the pulley 14. A tensioner for applying a predetermined tension to the belt 16 may be provided between the pulleys 14 and 15 as needed. By driving the motor 13 to rotate, the chuck 4 is driven to rotate at a predetermined reduction ratio with respect to the driving speed of the motor 13 via the pulley 15, the belt 16, and the pulley 14. That is, the revolution driving means 2 in this embodiment includes a motor 13, a pulley 15, a belt 16, and a chuck 4.
And a pulley 14 provided with

The chuck 4 in this embodiment corresponds to a housing 21 attached to the front of the pulley 14 and having a plurality of tapered claws 20, and the tapered claws 20 to move the tapered claws 20 in the radial direction of the work W. And a tapered claw driving member 22 having a tapered portion formed by the above-described method. An axial drive shaft 23 is supported in the rotation shaft 11 of the revolution driving means 2 so as to be movable in the axial direction of the revolution shaft relative to the rotation shaft 11. The axial drive shaft 23 has a hollow pipe shape, and is formed with a diameter substantially the same as the inner diameter formed by each tapered claw 20 so that the work W can be inserted in front thereof. A work insertion portion 23a is provided, and a tapered claw driving member 22 is provided at a front end of the work insertion portion 23a. As will be described later, a center shaft 25 is fitted inside the axial drive shaft 23 so as to be movable in the axial direction of the revolving shaft relatively to the axial drive shaft 23. The rotating shaft 11, the axial drive shaft 23, and the center shaft 25 are relatively movable in the axial direction of the revolving shaft by the pins 26, and the axis C of the revolving shaft.
Are engaged so that they cannot rotate relative to each other. The axis C of the revolving shaft of the work W fixed to the chuck 4 coincides with the rotation centers of the rotating shaft 11, the axial driving shaft 23, and the center shaft 25.

Further, at the rear end (right end in FIG. 1) of the rotating shaft 11 of the revolution driving means 2, there is provided a rotating cylinder 2 for moving the axial driving shaft 23 in the axial direction with respect to the revolution shaft.
7 are provided. The rotating cylinder 27 allows relative rotation of the working fluid around the revolution axis between the drain pipe 27 a and the connection pipe and the axial drive shaft 23. In the embodiment shown in FIG. 1, when the tapered claw driving member 22 provided on the axial driving shaft 23 is moved forward by the rotary cylinder 27 to the right in the drawing, each tapered claw 20 is moved radially inward. The workpiece W is similarly pressed so as to contract, and the work W inserted therein is fixed and held. The rotating cylinder 2
7, when the taper claw driving member 22 provided on the axial driving shaft 23 is moved backward to the left in the drawing, there is no pressing of the taper claws 20 inward in the radial direction, and the taper claws 20 return to the radial outside. And the workpiece W inserted inside
Is released (unchucked).

In front of the base 10 (to the right in FIG. 1), a moving means 3 for supporting the forming roller 1 and moving the forming roller 1 in the axial direction and the radial direction of the revolving shaft with respect to the work W is arranged. In this embodiment, the moving means 3 is a guide rail 3 provided on the base 10 in parallel with the axial direction of the revolving shaft.
0, an axial moving table 31 movably provided along the guide rail 30, a guide rail 32 extending on the axial moving table 31 in parallel with the radial direction of the revolving shaft, and a guide rail 32. And a radial moving table 33 that supports the forming roller 1 and that is movable along the table. As shown in FIGS. 2 and 3, the radial moving tables 33 are provided as a pair on the guide rail 32, and the forming rollers 1 are supported on the both radial moving tables 33, 33.

As shown in FIG. 3, a ball screw 35 disposed on the base 10 so as to extend in the axial direction of the revolving shaft is rotatably supported around the axis thereof. The ball screw nut 36 of the bracket provided on the lower surface of the base 31 is screwed to the ball screw 35. When the motor 37 (see FIG. 1) is driven to rotate the ball screw 35 around the axis, the axial moving table 31 supported on the guide rail 30 moves in the axial direction of the revolving shaft. In addition, as shown in FIG.
1, a ball screw 40 disposed to extend in the radial direction of the revolving shaft is rotatably supported about the axis.
The ball screw nuts 41 of the brackets provided on the lower surface of the radial movement table 33 are screwed to the ball screws 40, respectively. When the motor 42 (see FIGS. 2 and 3) is driven to rotate the ball screw 40 about the axis, the radial moving table 33 supported on the guide rail 32
Move in the radial direction of the revolving shaft in such a manner as to move closer to and farther from each other in synchronization.

A bracket 45 is provided on the upper surface of each radial direction moving table 33, and the surface of the bracket 45 facing the chuck 4 (left side in FIGS. 1 and 2) is
Support shafts 46 extending parallel to the axial direction of the revolving shaft are provided at equidistant positions about the axis C of the revolving shaft. The forming roller 1 is supported by a support shaft 46 via a bearing (not shown) so as to rotate following the rotation of the workpiece W.

Further, on one surface (the left side in FIG. 3) of the radial moving table 33, the surface of the bracket 45 on the side opposite to the surface on which the forming roller 1 is provided is provided with the work W which has been drawn and formed. Cutter 6 that cuts to a predetermined length
A guide member 47 that supports the cutter 6 and guides the cutter 6 to move toward and away from the workpiece W in the radial direction, a guide support member 48 that slidably supports the guide member 47, and a guide member. And a cylinder 49 connected to the cutter 47 for driving the cutter 6 to move toward and away from the workpiece W in the radial direction.

On the other side (the right side in FIG. 3) of the bracket 45 of the radial moving table 33, a surface of the bracket 45 opposite to the surface on which the forming roller 1 is provided is a work before drawing. Work holding plate 50 for pushing W into chuck 4 and positioning, and chuck of work holding plate 50 for forming such as removing burrs generated on the inner periphery of work W cut by cutter 6. A forming roller (hereinafter, referred to as an inner diameter correcting roller 51) rotatably provided concentrically on a surface on a side opposed to 4.
, Work holding plate 50 and inner diameter correcting roller 51
A guide member 52 for guiding the workpiece W to move toward and away from the workpiece W in the radial direction, a guide support member 53 for slidably supporting the guide member 52, and a guide member 52 connected to the guide member 52. The proximity of the work holding plate 50 and the inner diameter correcting roller 51 to the work W in the radial direction.
And a cylinder 54 for driving the retreating movement.

Further, as shown in FIGS. 1, 3, 6, and 7, a work insertion guide is provided in front of the axial movement table 31 so as to extend in front of the work insertion portion 23a of the chuck 4. A member 55 is provided. The work insertion guide member 55 according to this embodiment is formed by bending a bar-shaped member arranged in parallel with a smaller gap than the diameter of the work W so as to support the work W, and includes an axial movement table. It is attached to a bracket 56 provided in front of 31. The work insertion guide member 55 may be formed such that a portion on which the work W is once placed is inclined as shown in FIG. 1, and as shown in FIG. The mounting portion may be formed to be horizontal, and the portion between the mounting portion and the front of the work insertion portion 23a of the chuck 4 may be formed to be inclined.

At the front end of the center shaft 25, there is provided a work protruding member 25a formed so as to be in contact with the rear end face of the work W inserted into the work insertion portion 23a. It extends rearward (to the left in FIG. 1) beyond the rotary cylinder 27. Center shaft 2
5, near the rear end, the sleeve 60 is rotatable relative to the center shaft 25 via the bearing 61 (that is, the sleeve 60 supports the center shaft 25 rotatably without rotating the sleeve 60). And externally fitted so as to be relatively immovable in the axial direction. The front (the right side in FIG. 1) of the sleeve 60 is slidably supported by a bracket 62 provided behind the base 10 so as to be movable in the axial direction. An actuator 6 for driving the center shaft 25 in the axial direction of the revolving shaft is provided on the rear side (left side in FIG. 1).
5 is connected. This actuator 65 can be constituted by a pressure fluid working cylinder or the like that operates linearly, and has a length measuring mechanism that measures the axial movement amount (length) of the center shaft 25 supported by the sleeve 60. . The actuator 65 can adjust the driving force in the axial direction with respect to the center shaft 25 as necessary, for example, by changing the supply pressure of the working pressure fluid.

Further, a bracket 70 is provided at a rear end of the base 10, and the bracket 70 has a plurality of stoppers (two in the embodiment shown in the drawings) having different lengths in the axial direction of the revolving shaft. The main parts 71A and 71B are movably arranged via the moving arrangement mechanism 69 so as to be in contact with and substantially coincide with the central axis C of the rear end face of the sleeve 60. As shown in FIG. 5, the moving arrangement mechanism 69
The guide rail 72 is provided on the bracket 70 so as to extend in parallel with the rear end surface of the sleeve 60, and the stoppers 71A and 71B inserted through and supported by the guide rail 72.
73 that supports the actuator, and an actuator 7 that moves and drives the block 73 along the guide rail 72.
4 is provided.

In the case of this embodiment, the stopper 71A is directly screwed to the block 73, and the stopper 71B is formed by a bolt screwed to a base 73a formed on the block 73. Stoppers 71A, 7
A lock nut is screwed into each of the bolts constituting 1B. Stopper 71 from the surface of block 73
The protrusion amount of A and 71B can be finely adjusted by rotating the bolt around the axis with the lock nut loosened. As shown in FIGS. 4 and 5, by driving the actuator 74, one of the stoppers 71 </ b> A and 71 </ b> B having different lengths is brought into contact with the center axis of the rear end face of the sleeve 60 so as to abut. The block 73 moves along the guide rail 72.

On the other hand, the cut product delivery means 7
c, a cut product holding means 80 for receiving and holding the cut product c, a cut product discharge chute 81 formed in a substantially gutter shape arranged to carry out the cut product Wc out of the facility, and supporting the cut product holding means 80. Moving means for moving between a position at which the cut product Wc can be received (a position indicated by a solid line in FIG. 6) and a position at which the cut product Wc can be delivered to the cut product discharge chute 81 (a position indicated by a chain line in FIG. 6) (Described later). Note that FIG. 1, FIG. 2, and FIG. 4 do not show the cut product payout means 7.

A bracket 83 for supporting the turning actuator 82 is provided at a position on one side (upper position in FIG. 6 which is a plan view) of the base 10 in the vicinity of the chuck 4. . This bracket 83 is shown in FIG.
As shown in FIG. 7, the drive shaft of the turning actuator 82 is formed so as to be inclined at a predetermined angle with respect to the vertical line. The swing actuator 82 employs a so-called double-shaft type in which the drive shaft projects from the upper and lower surfaces of the main body. The base end of the cut product pop-out arm 85 is attached to the drive shaft that protrudes downward. In addition, to the drive shaft on the side protruding upward, a contact metal 86 that is pivotally driven in the same manner as the cut product pop-out arm 85 is attached. Further, a regulating bolt 8 that comes into contact with the bracket 83 by pivoting the contact plate 86 and regulates the pivot angle.
7, 87 are screwed. The moving means for supporting and moving the above-described cut product gripping means 80 is constituted by the turning actuator 82, the cut product pop-out arm 85, and the like.

At the tip of the cut product jumping arm 85,
Cut product gripping means 80 is provided. As shown in FIG. 8, the cut product holding means 80 is connected to one end of a cut product receiving shaft 91 whose intermediate portion is slidably guided by a guide 90 provided on the cut product pop-out arm 85. Cut product receiving shaft 91 via connecting member 92
And a pressure fluid working cylinder 93 for extending and retracting the guide, a disc-shaped chuck portion 91a is formed at the other end of the cut product receiving shaft 91, and a chuck plate 94 is provided on the side of the guide facing the chuck portion. Become. In the illustrated embodiment, when the pressure fluid working cylinder 93 is driven to retract, the cut product receiving shaft 91 moves so as to extend from the guide 90, and the chuck portion 91a opens with respect to the chuck plate 94 (see FIG. 8). When the pressure fluid working cylinder 93 is extended and driven, the cut product receiving shaft 91 moves so as to be retracted from the guide 90 and the chuck portion 91a is moved to the chuck plate 94.
And hold the cut product Wc supported by the cut product receiving shaft 91 so as to sandwich the cut product Wc (see the solid line in FIG. 8).

As shown in FIG. 7, the cut product discharge chute 81 has one end at which the cut product Wc gripped by the cut product gripping means 80 of the cut product jumping arm 85 is delivered upward, and the other end positioned downward. , And is supported by the bracket 83 in an inclined state. At one end of the cut product discharge chute 81, the upper portion is opened so that the cut product Wc can be reliably delivered, and the lower portion is formed to communicate with the gutter-shaped cut product discharge chute 81.
A box-shaped cut product receiving portion 81a is provided. Further, as shown in FIG. 6, in the cut product receiving portion 81a, in the vicinity of the turning locus of the cut product gripping means 80 provided at the distal end of the cut product jumping arm 85, the cut product receiving shaft 91 supports the cut product. A cut product removal bracket 95 is provided so that the cut product Wc in the contacted state comes into contact with the product when it moves and drops to the cut product receiving portion 81a without fail.

Next, another embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. In this embodiment, only portions different from the above-described embodiment will be described, and the same or corresponding portions will be denoted by the same reference numerals and description thereof will be omitted.

The difference between this embodiment and the above-described embodiment is that the radial movement tables 33, 33 in the above-described embodiment are provided in a pair, and are formed on both the radial movement tables 33, 33, respectively. While the rollers 1, 1 and the cutter 6 or the work holding plate 50, the inner diameter correcting roller 51, and the like are provided, the radial moving table 133 in this embodiment is provided as a single unit. The point is that the forming roller 1, the cutter 6, the work holding plate 80, and the inner diameter correcting roller 51 are switchably provided on the table 133.

As shown in FIG. 10, a bracket 145 is provided on the radial movement table 133, and the forming roller 1 is provided on a surface of the bracket 145 facing the chuck. The guide member 100 is provided on the opposite surface. 11 and 12
In this embodiment, as shown in FIG.
Cutter 6 is provided below 01, and work holding plate 50 and inner diameter correcting roller 51 are provided above. As shown in FIGS. 14 and 15, the support member 101 is slidable in the up-down direction and can be guided immovably in the axial direction.
00 is fitted. Furthermore, a radial moving table 1
A cylinder 102 to which a piston rod is connected to move the support member 101 up and down is provided on 33. The support member 1 is located above the bracket 145.
A bolt 103 is provided for abutting when the 01 is moved upward and restricting the upward movement. Bolt 1
03, in the case of this embodiment, when the cylinder 102 is driven to extend and the upper surface of the support member 101 abuts, the center axis of the cutter 6 provided below the support member 101 is aligned with the axis C of the workpiece W. The height is adjusted to be almost the same. Further, in this embodiment, as shown in FIG. 14, when the work W is pushed into the work insertion portion 23a by the work holding plate 50, the impact is applied to the support member 1 as shown in FIG.
A spring 104 for elastically urging the work holding plate 50 toward the chuck 4 is interposed so that the work holding plate 50 is not directly transmitted to the chuck 4. Such a spring 104
Can of course be adopted in the above embodiment.

Next, the contents of control by the control device (not shown) of the drawing apparatus configured as described above will be described.
A description will be mainly given of the case of the above-described first embodiment based mainly on FIGS. Note that FIG. 16 and FIG. 17 shown in the flowchart are continuous with A.

When drawing the work W, first, the work W is placed on the work insertion guide member 55 by hand and set to a state where the work W is pushed into the work insertion portion 23a to some extent (S1). The equipment is started by turning on a start switch (not shown) of the processing apparatus (S2). In the vicinity of the workpiece insertion guide member 55 and the chuck 4, although not shown, sensors including photoelectric switches and the like for confirming the existence of the workpiece W and for confirming the insertion failure of the workpiece W are provided respectively. The work W is present by these sensors (S3)
Is determined, and if there is a workpiece W, a determination is made to confirm whether or not the workpiece is inserted correctly (S4). Then, when it is determined that the insertion of the work W is normal, the process of holding the work (S5) is performed.

In the work holding step (S5), as shown in FIG. 4, the cylinder 54 is driven to extend while the axial moving table 31 is separated from the chuck 4 so that the forming roller 1 does not interfere with the work W. Then, the work holding plate 51 is brought close to the axis C of the work W, and thereafter, the ball screw 35 is driven to rotate around the axis by the drive of the motor 37 to retreat the axial direction moving table 31 as shown by the arrow. At this time, the stopper 71A selected according to the axial length of the workpiece W to be drawn is aligned with the rear end face of the sleeve 60 supporting the center shaft 25 by driving of the actuator 74 so as to abut. (See FIGS. 4 and 5). Therefore, when the axial movement table 31 is moved backward in the axial direction along the guide rail 30, the work W
A is pressed by the work holding plate 50 until the end comes into contact with the work protruding member 25a of the center shaft 25 backed up by the A, so that the work insertion portion 2
5a is appropriately and accurately inserted and positioned. Subsequently, the rotary cylinder 27 is driven to drive the tapered claw driving member 22 provided on the axial driving shaft 23 forward, thereby pressing each tapered claw 20 so as to contract inward in the radial direction. And fix it (S
6). The work W is monitored by monitoring the pressure of the working fluid supplied to the rotary cylinder 27, for example.
It is determined whether there is any abnormality in the chuck pressure for the chucked end (S7). If the chuck pressure is normal, the axial direction moving table 31 is moved forward in the axial direction, and the cylinder 54 is driven to retract so that the work holding plate 50 is separated from the axis C of the work W (S8).

Subsequently, while the actuator 65 connected to the sleeve 60 supporting the center shaft 25 is slightly advanced (that is, pressed forward) (S9), the motor 13 of the revolution driving means 2 is driven. While rotating the work W fixed by the chuck 4 around the axis C by rotating and driving, the axial direction moving table 31 and the radial direction moving table 33 are repeatedly moved (see a chain line in FIG. 2), and the forming roller 1 The work W is drawn and formed into a predetermined shape (S10). Here, when forming the work W, if the work W is pressed so as to retreat (to the left in FIG. 1) by the movement of the forming roller 1 in the axial direction with respect to the work W, the work protrusion member Since the workpiece W is in contact with the workpiece 25a and the rear end surface of the sleeve 60 supporting the center shaft 25 is backed up by the stopper 71A,
The work W does not shift so as to retreat along the axial direction in the work insertion portion 25a.

On the other hand, when forming the work W, when the work W is pulled forward (to the right in FIG. 1) by the movement of the forming roller 1 in the axial direction with respect to the work W, the actuator 65 is used. Is driven so as to slightly press forward, and when the work W is shifted so as to advance in the axial direction in the work insertion portion 23a, the sleeve 60 supporting the center shaft 25 is accordingly moved. Also follow and move forward. This sleeve 60
Is detected by the length measuring mechanism of the actuator 65. Therefore, the control device determines whether there is a displacement of the work W based on a signal from the length measuring mechanism, and when it is determined that there is no displacement, as shown in FIG. Is stopped so as to stop pushing forward, and is driven backward (S12). At this time, as described above, the rearward end surface of the sleeve 60 supporting the center shaft 25 abuts on either of the stoppers 71A or 71B, whereby the retraction of the center shaft 25 is restricted.

When the drawing process of the work W by the forming roller 1 is completed, the cutter 6 is advanced (S13), and the cut product pop-out arm 85 is turned to the receiving side (S1).
4), the cut product receiving shaft 91 is advanced (S)
15) The work W is cut to a predetermined length (S1).
6).

Here, in the advancing step of the cutter 6 (S13), as shown in FIG. 6, after the cylinder 49 is extended and driven, the cutter 6 cuts the workpiece W at a predetermined position in the radial direction. With the axial movement table 31 moved so as to be located on the extension line, the radial movement table 33 is moved.
Is moved, and the cutter 6 is pressed against a predetermined position of the workpiece W to be cut.

In the turning step (S 14) of the cut product pop-out arm 85 to the receiving side (S 14), the cut-out pop-up arm 85 is moved from the pop-up side (see the position H shown by a chain line in FIG. 3 or FIG. 6) to the receiving side (FIG. 6 (see the position G indicated by the solid line) to rotate the turning actuator 82 to the cut product gripping means 80.
The chuck portion 91a provided at the tip of the receiving shaft 91 is positioned inside the inner diameter of the tip opening of the work W. When the turning actuator 82 is driven to turn, the contact metal 86 is fixed to the regulating bolt 87 provided on the bracket 83.
, The cut product jumping arm 85
The turning angle of the cut product gripping means 80 is accurately regulated so that the cut product gripping means 80 is arranged at a predetermined position on the receiving side G.

Further, in the advancing step (S15) of the cut product receiving shaft 91, as shown by a broken line in FIG. 6 and a chain line in FIG. The chuck 91a is advanced leftward in FIG. 6 and rightward in FIG. 8 so that the chuck portion 91a is deeper than the cut position in the opening at the distal end of the work W. In this state, the work W gripped by the chuck 4 is rotated by the drive of the motor 13, so that the work W pressed by the cutter 6 is cut (work cut) over the entire circumference and cut off, and the cut product Wc is cut. However, the cut product Wc is hung between the chuck portion 91a of the receiving shaft 91 of the cut product gripping means 80 and the chuck plate 94.

The step of moving the cutter 6 forward (S13),
The turning step (S14) of the cut product pop-out arm 85 to the receiving side and the forward step (S15) of the cut product receiving shaft 91 are not limited to the above-described order, and the receiving side of the cut product pop-out arm 85 is not limited thereto. After performing the turning step (S14) and the forward step (S15) of the cut product receiving shaft 91, or simultaneously with this, the forward step (S13) of the cutter 6 may be performed.

When the pressure fluid working cylinder 93 is driven to extend while the cut product Wc is hung between the chuck portion 91a of the receiving shaft 91 and the chuck plate 94, the receiving shaft 91 is retracted as shown in FIG. (S17), the cut product Wc is received by the chuck portion 91a of the receiving shaft 91 and the chuck plate 94.
Is sandwiched between. Subsequently, the swing actuator 82
As a result, the cut product jumping arm 85 is turned to move the cut product gripping means 90 from the receiving side G to the jump side H (S18), and the cylinder 49 is retracted to move the cutter 6 backward (S19). Then, the cylinder 54 is extended and driven so that the inner diameter correcting roller 51 is positioned within the cut opening of the workpiece W, and the axial moving table 31 is moved to advance the inner diameter correcting roller 51 (S20), and the cut product is gripped. The receiving shaft 91 of the means 80 is advanced to release (uncuck) the holding of the cut product Wc by the chuck portion 91a and the chuck plate 94 (S21).

Unchucking step of cut product Wc (S2
More specifically, 1) will be described. The cut product gripping means 80 provided at the tip of the cut product jumping arm 85
6 is set so as to pass near the cut product removal bracket 95 of the cut product carrying chute 81 as shown in FIG. And, on the turning locus L of the cut product gripping means 80 and closer to the receiving side G than the cut product removal bracket 95,
A sensor is provided (not shown) for detecting the passage of the cut product gripping means 80 from the receiving side G to the protruding side H and outputting a passing signal to the control device (not shown). In response to the passing signal from this sensor, the control device drives the pressure fluid working cylinder 93 to retract and immediately cuts by the chuck portion 91a and the chuck plate 94 of the receiving shaft 91 immediately before passing the vicinity of the cut product removing bracket 95. Release the product. Since the drive shaft of the swing actuator 82 is inclined with respect to the vertical line, when the cut product gripping means 80 passes near the cut product removal bracket 95, the chuck portion 91 at the tip end.
The receiving shaft 91 is inclined with respect to the horizontal so that a is directed downward. Therefore, the cut product Wc, which has been released from being gripped by the chuck portion 91a and the chuck plate 94, comes into contact with the passage 95 near the cut product removal bracket 95, comes out of the receiving shaft 91, and is supported in an inclined state. It falls into the cut product receiving portion 81 a provided above the cut product discharge chute 81, and rolls down or slides down below the cut product discharge chute 81 and is discharged. After the cut product Wc is removed from the receiving shaft 91, the pressure fluid working cylinder 93 is driven to extend so as to retreat, and is returned to the standby state (S22).

In the inner diameter correcting roller advancing step (S20),
After retracting the cylinder 54, the moving table 31,
The operation of 33 brings the inner diameter roller 51 into contact with the inner periphery of the cut opening of the work W. And motor 1
When the work W is driven to rotate by 3, the inner diameter correcting roller 51 rolls in the opening of the work W, removes burrs generated by cutting the work W, and corrects the inner diameter of the work W (S23). When the correction of the inner diameter of the work W is completed, the axial direction moving table 31 is moved and the cylinder 5 is moved.
4 to retract the inner diameter correcting roller 51 (S
24) driving the rotary cylinder 27 to drive the axial drive shaft 2
3 to retreat the tapered claw driving member 22 provided in
The fixing of the work W by the tapered claws 20 is released (unchucked) (S25), and the actuator 65 is driven to advance the center shaft 25 supported by the sleeve 60 rightward in FIG. 1 (S26). The work W in the unchuck state is pushed out from the chuck 4 onto the work insertion guide member 55 by the work protruding member 25 a provided at the tip of the center shaft 25. Then sleeve 6
The center shaft 25 supported at 0 is retracted and returned by driving the actuator 65 (S28), and the equipment is stopped (S27).

In the control device of the present invention, as shown in FIG. 16, the work W is not in the chuck 4 in the step S3, the work W is not properly inserted into the chuck 4 in the step S4, The chuck end / chuck pressure is abnormal, or the chuck 4 of the workpiece W is operated by the length measuring mechanism of the actuator 65 in step S11.
If it is determined that there is a deviation within the range, control is performed to immediately stop the machine in any case as an equipment abnormality (S29).

[0051]

According to the first aspect of the present invention, the control device for monitoring the movement of the work due to the forming force at the time of forming and controlling the drawing processing is provided, so that the work can be shifted with a simple structure. Therefore, it is possible to provide a drawing apparatus that can prevent the drawing precision from being deteriorated due to the above, and thus can improve the drawing precision.

According to the second aspect of the present invention, in the first aspect of the present invention, the positioning means for variably positioning the work according to the size of the work is provided, so that the size of the work can be reduced with a simple configuration. Accordingly, it is possible to provide a drawing apparatus capable of easily performing high-precision positioning in accordance with the above, and thus improving the drawing processing accuracy.

According to a third aspect of the present invention, in the first or second aspect of the invention, a cutter for cutting a drawn workpiece, and a cut product for receiving and paying out a cut product separated from the work. By providing the dispensing means, when the work is cut into a predetermined length by the cutter, a drawing device capable of reliably carrying out the cut product with a simple configuration without scattering the cut product is provided. can do.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a drawing apparatus according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is an explanatory diagram showing a state in which a work is positioned on a chuck by a work holding plate.

FIG. 5 is an explanatory diagram showing a state of a stopper that is changed according to the size of a work and a moving arrangement mechanism thereof, as viewed from an axial direction.

FIG. 6 is a partial plan view of the drawing apparatus of the present invention, showing how the drawn work is cut into a predetermined length by a cutter.

FIG. 7 is a partial rear view showing a side opposite to FIG. 1 for explaining cut product payout means;

FIG. 8 is an enlarged view showing a state in which the cut product is gripped by the cut product holding means of the cut product delivery means.

FIG. 9 is a partial plan view showing a state in which an inner peripheral surface of a work cut to a predetermined length is corrected by an inner diameter correction roller.

FIG. 10 is a sectional view showing another embodiment of the drawing apparatus of the present invention.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a partial explanatory view showing a state in which the cutter is switched and arranged to the side of the work from the state of FIG. 11;

FIG. 13 is an explanatory view of a state changed in accordance with the size of a work and a moving arrangement mechanism thereof according to another embodiment shown in FIG. 10, viewed from an axial direction.

FIG. 14 is a plan view showing a forming roller, a work holding plate, and an inner diameter correcting roller provided on a radial direction moving table in another embodiment shown in FIG. 10;

15 is a cross-sectional plan view showing a cutter provided on a radial movement table in another embodiment shown in FIG. 10;

FIG. 16 is a flowchart showing a part of control contents of the control device of the present invention.

FIG. 17 is a flowchart showing the control contents continued from FIG. 16;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forming roller 2 Revolution driving means 3 Moving means 4 Chuck (fixing means) 5 Positioning means 6 Cutter 7 Cut product dispensing means 50 Work holding plate 51 Inner diameter correction roller 65 Actuator with length measuring mechanism 69 Moving arrangement mechanism 71A, 71B Stopper W Work Wc cut product

Claims (3)

[Claims] 1. A drawing apparatus for drawing a work by a forming roller movable in three orthogonal directions, wherein the drawing apparatus controls movement of the work due to forming force during forming and controls the drawing. A drawing device comprising a control device. 2. The drawing apparatus according to claim 1, further comprising positioning means for variably positioning the work according to the size of the work. 3. The apparatus according to claim 1, further comprising: a cutter for cutting the drawn workpiece; and a cut product discharging means for receiving and discharging a cut product separated from the work. Drawing equipment.