JP5154107B2 - Press work processing equipment - Google Patents

Description

The present invention relates to a workpiece processing apparatus for a press capable of processing at a high speed with respect to processing a workpiece by a cam press machine and conveying a drawn workpiece by a finger of a transfer device.

  A conventional cam press machine is known from US Pat. According to this, as shown in FIG. 12, in this cam press machine, a cam curve C is formed considering breakthrough reduction. The slide drive device is provided with a double cam including a punching cam and a slide raising cam. The cam curve of the punch cam is a first suddenly descending cam curve C1 that suddenly descends from the start point, a slowly descending cam curve C2 that slowly descends, a non-lowering cam curve C3 that does not descend, and a second suddenly descending cam curve C4 that suddenly descends It is formed with. Accordingly, since the press machine has an area where the slide stops within the range of the machining process, it is possible to reduce breakthrough, reduce vibration generated in the press machine, and achieve low noise.

  In general, when a workpiece is formed by deep drawing, the workpiece is sequentially processed by a transfer device or a transfer press so that the drawing depth increases in order. In this case, the workpiece is processed by a mold having multiple steps while being conveyed by the transfer device. That is, when the workpiece is punched into the blank material in the first step, it is gripped by the finger and conveyed to the second step. In the second and subsequent steps, drawing is performed, and the drawing is performed by deeply drawing in order as the punch enters the die.

  In this drawing process, the punch mounted on the upper die enters the die by the slide down. As shown in FIG. 1, the workpiece W punched into the blank material in the first process is subjected to a drawing process in the second process and thereafter. In the second step, the drawing depth is shallow, and the drawing depth increases as the process proceeds from the third step to the next step.

  On the other hand, in the slide, the punch 3 comes into contact with the work W that has been squeezed at a position slightly above the upper surface of the die 2, and when the slide further descends, the punch 3 moves the work W on the upper surface of the die 2. to go into. When the punch 3 reaches the lowest position at the bottom dead center of the slide, the workpiece is processed with a depth of a predetermined dimension, and when the slide passes the bottom dead center position, the slide starts to rise. At this time, the workpiece W is also raised together with the punch 3 by the biasing force of the coil spring 6. The punch 3 passes through the upper surface of the die 2 and comes out of the workpiece W at a position above the upper surface of the die 2. Before the punch 3 comes out of the workpiece W, the outer periphery of the workpiece W is held by the finger of the transfer device and held in that position.

  That is, the workpiece W is gripped by the finger at the position of the pass line PL, so that support of the workpiece is transferred from the punch to the finger.

  At this time, since the depth of the work varies depending on each process, the amount of punch entering the work differs. For example, the punch 3 is located at the position of the second process and the position of the final process on the pass line PL. The timing of exiting the workpiece W will be different. Therefore, for example, when the press machine is operating at a high speed, the punch 3 in the first step may be quickly removed from the workpiece W before the workpiece is gripped by the fingers. In this case, since the workpiece W falls and cannot be gripped by the finger, the processing machine becomes defective and the press machine must be stopped. Therefore, there was a limit to operating the press at high speed.

In order to solve this, it has been necessary to form a new timing when the workpiece support is transferred between the punch and the finger.
JP-A-9-201698

  However, when the above-described deep drawing of the workpiece W is performed by the cam press machine of Patent Document 1, the non-lowering cam curve C3 formed on the punching cam is formed at a timing after the punching of the workpiece W is started. This is only formed during the shearing of the workpiece W, and is to reduce the punching speed. In other words, this press machine is not formed for the purpose of timing the transfer fingers. Therefore, a curve corresponding to the non-lowering cam curve C3 is not formed on the rising cam. Moreover, the cam arrange | positioned at this press machine forms the double cam. The double cam is usually formed by arranging two cams side by side. That is, since one punching cam and one lifting cam are arranged side by side, the load center position at the time of punching and lifting at the frame of the press machine is different. This generates an unbalanced load, which causes vibrations due to the unbalanced load to reduce accuracy and hinders high-speed operation. In particular, in the press machine equipped with the transfer device, the punching load in each process is different, and the frame of the press machine is likely to be subjected to an offset load.

The present invention solves the above-described problems, and provides a work processing apparatus for a press that can accurately form a work to be drawn and can support the work in a timely manner when the transfer apparatus is conveyed at high speed. With the goal. Therefore, the present invention is configured as follows. That is,
According to the first aspect of the present invention, the workpiece that is drawn by moving the punch toward the die is conveyed by being gripped by the fingers of the transfer device, and the posture of the workpiece is supported by the fingers during conveyance. At the time of processing, the posture is supported by the punch and processed,
Movement of the punch toward and away from the die in a section in which the workpiece is gripped by the finger before the punch presses the workpiece and a section in which the workpiece is gripped by the finger before the punch comes out of the workpiece A work processing apparatus for a press having a slide drive mechanism configured to form a stroke curve having a stop section for stopping a slide, wherein the slide is equipped with an upper die having the punch, and a lower is provided with the die. A bolster mounted with a mold, and having a first cam that raises the slide and a second cam that processes the workpiece, the second cam sandwiching the first cam The first cam has a dwell portion that forms a stop section that stops the upward movement of the punch, and the second cam performs the downward movement of the punch. A dwell portion that forms a stop section to be stopped, and the dwell portion of the first cam has an axial center of the first cam and a position having a minimum radius on the outer peripheral surface of the first cam. The second cam dwell portions are arranged at symmetrical positions with respect to the connecting virtual line, and the axial center of the second cam and the position having the maximum radius on the outer peripheral surface of the second cam, They are arranged at symmetrical positions with respect to the connecting virtual lines .

The invention according to claim 2 is characterized in that the slide drive mechanism is disposed below the bolster.

  According to the present invention, the workpiece is drawn in each process when the punch is in the lower position (near the bottom dead center position), and the workpiece is drawn on the transfer line on the pass line when the punch is in the raised position. It is conveyed to the next process while being held by the finger. When the workpiece is gripped by the fingers in each process, the punch is lowered together with the slide, and when all the punches enter the recessed portions of the drawn workpieces, the lowering of the punch is temporarily stopped. On the other hand, the finger is normally operated, and when the lowering of the punch is stopped, the finger releases the grip of the outer peripheral surface of the workpiece and is separated from the workpiece.

  That is, in this section, the work is transferred from the finger to the punch. Next, the punch supporting the workpiece is lowered together with the workpiece and enters the recess formed in the die, and the next drawing is performed.

  When the punch reaches the bottom, the punch continues to rise. As the punch rises, the workpiece also starts to rise by the coil spring. When the punch and workpiece reach the pass line beyond the upper surface of the die, the punch is temporarily stopped at that position. During this punch stop period, the finger performing normal operation grips all workpiece outer peripheral surfaces approaching all workpieces. When the finger grips all the workpieces, the punch starts to rise and exits the workpiece.

  That is, in this section, the work is transferred from the punch to the finger.

  As described above, in the present invention, when the support of the workpiece is transferred by the punch and the finger, the workpiece can be reliably supported by forming a timing at which the support to the workpiece is overlapped by the punch and the finger. Therefore, the workpiece can be prevented from falling or falling, and press working can be performed without causing a feed failure. Moreover, since the workpiece is reliably supported, the press can be operated at high speed.

  Moreover, in this invention, the structure which forms the stop area of the vertical movement of a punch with the timing which overlaps support of a workpiece | work with a punch and a finger, the 1st cam which raises a slide (punch), and a slide ( Two second cams that lower the punch) (work the workpiece) are used. A dwell portion is provided in a part of the cam curve of the first cam and the cam curve of the second cam, and each is symmetrical (the axis of the cam and the position having the minimum or maximum radius on the outer peripheral surface of the cam) Are arranged at positions that are symmetrical with respect to a virtual line connecting the two. Therefore, when the slide (punch) is lowered, the lowering of the punch is temporarily stopped at the dwell portion of the second cam, and the support of the workpiece is transferred from the finger to the punch. Further, when the slide (punch) rises, the rise of the punch is temporarily stopped at the dwell portion of the first cam, and the support of the workpiece is transferred from the punch to the finger during that time. Therefore, similarly to the first aspect, the work can be reliably supported by forming a timing at which the support to the work is overlapped by the punch and the finger. Therefore, the workpiece can be prevented from falling or falling, and press working can be performed without causing a feed failure.

  In addition, since the second cam is disposed in a pair with the first cam in between, the center position of the load for machining the workpiece by lowering the slide is on the same line as the first cam during machining. Therefore, it is possible to cope with higher precision and higher speed.

  Further, in this work processing apparatus of the press, the slide drive device provided with the first cam and the second cam is arranged below the bolster (below the die), so that the space for arranging the transfer device is free. The degree can be increased. Further, the center of gravity of the press machine can be lowered, and high-speed and stable pressing can be performed.

  Next, an embodiment of a work processing method and apparatus for a press according to the present invention will be described with reference to the drawings. The workpiece of the embodiment is deep-drawn, and the workpiece is sequentially processed by a transfer mold (hereinafter simply referred to as a mold) that is transported by a transfer device and has multiple steps.

  As shown in FIGS. 1 and 2, the workpiece W is punched into a blank material by primary processing and then subjected to drawing processing in order by secondary processing. FIG. 1 shows secondary processing, in which a punch 3 enters the blank material conveyed on the upper surface of the die 2 toward the concave portion 4 of the die 2 to perform drawing processing. For example, the drawing depth is increased in order from the first step to the sixth step, and the final product is formed into a small-diameter elongated cylinder with one side opened.

  A pass line PL for conveying the workpiece W is formed on the upper surface of the die 2, and as shown in FIGS. 2 to 3, the workpiece W is held by the fingers 8 of the transfer device 7 and conveyed between the processes. The concave portion 4 of the die 2 is formed in a step shape, and a small diameter portion 41 and a large diameter portion 42 are formed. A stepped guide pin 5 is inserted into the stepped recess 4, the work W is supported on the upper surface of the guide pin 5, and the lower surface is urged upward by the coil spring 6.

  When the punch 3 is in the upper position and is not supported by the punch 3, the workpiece W is gripped on the outer peripheral surface thereof by the finger 8, and when the punch 3 descends and enters the press working process, the finger 8 is gripped. It is released and supported by the punch 3. The transfer of the support of the workpiece W by the punch 3 and the finger 7 is performed at a timing before the punch 3 enters the concave portion 4 of the die 2 (on the pass line PL) as shown in the stroke diagram of FIG. In the case of the illustrated example, the movement stroke of the punch 3 is about 30 mm, and the vertical movement of the punch 3 temporarily stops at a position several millimeters above the bottom dead center position per upper surface position of the die 2. This interval corresponds to about 10 degrees from the front / rear position (for example, 60 degrees forward / backward) of the bottom dead center position (180 degrees) of the crank angle.

  Since the work W in the first step in the illustrated example is disk-shaped, when the finger 8 is separated from the work W1 and transfers support to the work W to the punch 3 (movement stop position of the punch 3), The lower surface of the punch 3 is positioned above the workpiece W. In the second and subsequent steps, it is a position that has entered a cylindrical recess of the workpiece W that has a concave cross section.

  The punch 3 starts to descend again from the movement stop position of the punch 3 and performs the drawing process of the workpiece W. 4 to 6 show a state in which the workpiece W has been drawn in each step, and the workpiece W arranged on the upper surface of the die 2 is moved to the bottom dead center position in the recess 4 of the die 2 by the punch 3. Is formed in a concave cross section. That is, the inner diameter of the small-diameter portion 41 of the concave portion 4 in each process is formed smaller than the outer shape of the workpiece W before being pressed by the punch 3, so that when the workpiece W enters the concave portion 4, the outer shape of the workpiece W is And it will deform | transform so that it may become a small diameter along the internal diameter of the recessed part 4. FIG.

  At this time, the guide pin 5 disposed in the recess 4 moves downward in the large-diameter portion 42 of the recess 4 against the urging force of the coil spring 6 by the penetration of the punch 3 into the recess 4. Will be.

  Next, the configuration of the cam press 10 for forming the stroke diagram of FIG. 7 will be described based on FIGS.

  The cam press 10 is disposed above the bolster 12 so as to face the bolster 12, the slide drive mechanism 20 configured inside the frame 11, the bolster 12 fixed to the upper surface of the frame 11, and the bolster 12. And a slide 15 supported by a guide post 13 protruding from the frame 11. The transfer device 7 is mounted on the bolster 12 and the slide 15. That is, the die 2 is mounted on the lower mold of the mold 1 on the bolster 12, and the punch 3 mounted on the upper mold of the mold 1 is disposed on the slide 15. Two or four guide posts 13 are arranged at opposite corners of the frame 11 in plan view of the frame 11, support the slide 15 at the upper part, and two or four guides at the lower part. A connecting plate 14 that integrally connects the posts 13 is fixed.

  The slide drive mechanism 20 includes a main shaft 21 that is rotatably disposed on the frame 11 via a bearing, penetrates the frame 11 in the horizontal direction, and three cams 22 that rotate together with the main shaft 21. Yes.

  The three cams 22 are arranged in parallel on the main shaft 21, and the first cam 22A arranged at the center is formed as a raising cam 22A for raising the slide 15, The pair of second cams 22B arranged with the cam 22A interposed therebetween is formed as a processing cam 22B that lowers the slide 15 to draw the workpiece W. Cam rollers 23A and 23B having a perfect circular outer peripheral surface are respectively engaged with the ascending cam 22A and the processing 22B.

  The cam roller 23 </ b> A is disposed above the ascending cam 22 </ b> A and is supported on an upper portion of a connecting member 24 fixed to the connecting plate 14. The cam roller 23 </ b> B is disposed below each of the pair of processing cams 23 </ b> B and is supported by the lower portion of the connecting member 24.

  The three cams 22 and the three cam rollers 23 constitute a restraining cam, and the ascending cam 22A and the processing cam 22B are engaged with the cam roller 23A and the cam roller 23B, respectively, so that there is no play.

Rising cam 22A, as shown in FIG. 11 (a), and Q1 the point having the maximum radius H1 from the axis O _1, if a point having a minimum radius H2 from the axis O ₁ was Q2, point Q2 A section of about 120 degrees with the first cam curve T1 and a section of about 10 degrees connecting the both ends of the first cam curve T1 with the dwell sections T2 and T3 and the dwell sections T2 and T3, respectively. A section facing the first cam curve S1 is formed as a second cam curve T4.

  The first cam curve T1 of the ascending cam 22A is formed so that the radius gradually increases along both sides between the point Q2 and the point Q2, and the dwell section T2 at a position of about 60 degrees on both sides from the point Q2. , T3 have the same radius. Similar to the first cam curve, the second cam curve T4 is formed so that the radius gradually increases toward the point Q1. FIG. 11A shows a state where the point Q1 of the ascending cam 22A is engaged with the cam roller 23A, and shows the top dead center position of the slide 15.

Machining cam 22B, as shown in FIG. 11 (b), the point having the maximum radius L1 from the axis O ₂ and P1, if the point having the minimum radius L2 from the axis O ₂ was P2, the point P1 A section of about 120 degrees with the first cam curve S1 in between, and a section of about 10 degrees connecting the both ends of the first cam curve S1 with the dwell sections S2, S3 and dwell sections S2, S3, respectively. A section facing the first cam curve S1 is formed as a second cam curve S4.

  The first cam curve S1 of the processing cam 22B is formed such that the radius gradually decreases along both sides between the point P1 and the point P1, and the radii of the dwell sections S2 and S3 are formed to have the same dimension. ing. The second cam curve S4 is formed so that the radius gradually decreases toward the point P2. FIG. 11B shows a state where the point P1 of the processing cam 22B is engaged with the cam roller 23B, and shows the bottom dead center position of the slide 15.

  As shown in FIG. 9, the ascending cam 22 </ b> A and the machining cam 22 </ b> B are configured such that when the point P <b> 1 having the maximum radius of the machining cam 22 </ b> B is engaged with the cam roller 23 </ b> B, that is, the slide 15 is at the bottom dead center position. At some point, the point Q2 having the minimum radius of the ascending cam 22A is mounted so as to engage with the cam roller 23A. Since both the cam rollers 23A and 23B are mounted on the bracket 24, the ascending cam 22A and the processing cam 22B constituting the restraining cam are restrained in the vertical direction and mounted so that there is no backlash. It becomes.

  A pulley 25 is attached to one end of the main shaft 21, a drive motor 27 is connected via a belt 26, and an air brake 28 is connected to the other end. In addition, a coil spring 29 that urges the connecting plate 14 upward is arranged at one or a plurality of locations on the connecting plate 14 to give an assisting force when the slide 15 is lifted by the lifting cam 22A.

  Next, the operation of the cam press 10 configured as described above will be described with reference to the drawings.

  When the drive motor 27 is actuated to rotate the main shaft 21 in one direction via the belt 26 and the pulley 25, one ascending cam 22A and two machining cams 22B rotate along with the rotation of the main shaft 21. To do. At the top dead center position of the slide 15, the point Q1 of the raising cam 22A is engaged with the cam roller 23A at the upper position. On the other hand, the processing cam 22B is in a state where the second cam curve S4 is at a lower position and the point P2 is engaged with the cam roller 23B. At this position, the fingers 8 of the transfer device 7 are in the process of gripping each workpiece W and transporting it from the previous process to the next process.

  Thereafter, the rotation of the main shaft 21 causes the machining cam 22B to rotate and push down the cam roller 23B along the second cam curve S4, thereby gradually lowering the slide 15 (punch 3). At this time, the cam roller 23A is engaged with the second cam curve T4 along the direction in which the radius of the second cam curve T4 of the ascending cam 22A gradually decreases. Since the cam roller 23A receives the reaction force of the force that lowers the slide 15, the cam roller 23A descends in a state that does not cause backlash between the cam roller 23A and the ascending cam 22A.

  When the angular position of the main shaft 21 is rotated to a position of about 110 degrees, the dwell section S2 of the processing cam 22B reaches the position where it engages with the cam roller 23B. The movement is stopped at a position slightly above the upper surface of 2 (substantially the position of the pass line PL). In the ascending cam 22A, the dwell section T2 is engaged with the cam roller 23A, and the reaction of the downward inertia force caused by the stop of the movement of the slide 15 is caused by the ascending cam 22A and the cam roller 23A in the engaged state and the processing. It is received by the cam 22B and the cam roller 23B. Therefore, it can act with accuracy without generating play.

  In this position, the position of the lower surface of the punch 3 is above the workpiece W in the first step, and the workpiece W is supported on the upper surface of the die 2. In the second and subsequent steps, the lower surface of the punch 3 enters the cylindrical concave portion of the workpiece W having a concave cross section and supports the punch 3 to prevent the workpiece W from falling. On the other hand, the finger 8 stops moving in the transport direction and begins to separate from the outer peripheral surface of the workpiece W. Therefore, the workpiece W is not supported by the fingers 8.

  The movement stop section of the slide 15 (punch 3) is set to an angle of about 10 degrees, and when the movement stop section ends, the first cam curve S1 of the processing cam 22B moves to a position where it engages with the cam roller 23B. The slide 15 (punch) is lowered again. In this section, the punch 3 enters the recess 4 of the die 2 to draw the workpiece W. During this processing, the first cam curve T1 of the ascending cam 22A is engaged with the cam roller 23A. Since the processing cam 22B and the cam roller 23B, and the ascending cam 22A and the cam roller 23A are engaged with each other without play, the processing accuracy is not reduced. The finger 8 of the transfer device 7 moves back in the direction opposite to the transport direction.

  When the point P1 of the processing cam 22B reaches the lowest position, the state shown in FIG. 9 is reached, and the slide 15 (punch 3) reaches the bottom dead center position. At the same time, one raising cam 22A reaches a position where the point Q2 is engaged with the cam roller 23A, and a point Q2 indicating the minimum radius position reaches a position where it is engaged with the cam roller 23A.

  By further rotation of the main shaft 21, the first cam curve T1 of the raising cam 22A is brought into a position where it is engaged with the cam roller 23A, and the cam roller 23A is pushed up. The cam roller 23B is in a state of being engaged with the first cam curve S1 along the direction in which the radius of the first cam curve S1 of the ascending cam 22B gradually decreases. Since the cam roller 23B receives the reaction force of the force that raises the slide 15, the cam roller 23B rises in a state in which no play occurs between the cam roller 23B and the raising cam 22B. As a result, the slide 15 (punch 3) rises and the workpiece W moves upward by the biasing force of the coil spring 6 housed in the recess 4 of the die 2.

  Simultaneously with the ascent of the slide 15, the coil spring 19 whose one end is locked to the connecting plate 14 pushes up the connecting plate 14 in an auxiliary manner.

  When the dwell section T3 of the ascending cam 22A reaches the position where the camshaft 23A engages with the further rotation of the main shaft 21, the processing cam 22B becomes the position where the dwell section S3 engages with the cam roller 23B, and the slide 15 moves upward. To stop. The upward inertia force reaction caused by the stop of the movement of the slide 15 is received by the ascending cam 22A and the cam roller 23A, and the processing cam 22B and the cam roller 23B in the engaged state. Therefore, it can act with accuracy without generating play.

At this position, the punch 3 has escaped from the recess 4 of the die 2 and has reached a position slightly above the upper surface of the die 2. The punch 3 enters the cylindrical recess of the work W, and the finger 8 of the transfer device 7 grips the outer peripheral surface of the work W while the movement of the punch 3 is stopped.

When the engagement between the dwell section T3 of the raising cam 22A and the cam roller 23A is completed by the further rotation of the main shaft 21, the second cam curve T4 of the raising cam 22A is engaged with the cam roller 23A. The slide 15 (punch 3) starts to rise again when the second cam curve S4 of the processing cam 22B is brought into a position where it is engaged with the cam roller 23B.

  When the point Q1 of the ascending cam roller 22A is engaged with the cam roller 23A and the processing cam point P2 is engaged with the cam roller 23B, one press cycle is completed, and this is repeated continuously. It becomes. During this one cycle, the ascending cam 22A and the cam roller 23A, and the processing cam 22B and the cam roller 23B are always constrained, so that the slide 15 can be moved up and down without causing play. .

  On the other hand, the workpiece W is gripped by the finger 8 and conveyed to the next step.

  As described above, in the workpiece conveyance method of the embodiment, before the punch 3 enters the cylindrical recess of the workpiece W and enters the recess 4 of the die 2, the movement of the punch 3 is stopped, Since the finger 8 grips the workpiece W, the inner peripheral surface of the workpiece W is once supported by the punch 3 and the outer peripheral surface is supported by the finger 8. Since this timing is formed by the cam 22 of the cam press machine 10, the work W transferred from the punch 3 to the finger 8 is surely supported, and no feed failure due to this is generated. Therefore, the press can be operated at high speed.

  The above-described processing method is performed by mounting the first cam (raising cam) 22A and the second cam (processing cam) 22B. Since a pair of the processing cams 22B are disposed with the ascending cam 22A in between, the workpiece W can be processed with a concentrated load with balanced left and right without causing an offset load when processing. Therefore, it is possible to improve the accuracy by reducing the vibration applied to the press machine and to cope with high speed.

  In addition, the dwell section formed in each cam 22 is a pair of left and right symmetrically with respect to a point Q2 (upward cam 22A) indicating a position having the minimum radius and a point P1 (processing cam 22B) indicating a position having the maximum radius. Is formed. Further, the upward movement stop section of the punch 3 at the time of ascent is performed in the dwell section T3 of the ascending cam 22A, and the downward movement stop section of the punch 3 is performed in the dwell section S2 of the machining cam 22B. By mounting the two types of cams at the same timing as described above, the support of the workpiece W can be reliably transferred by the punch 3 and the finger 8.

  The press work processing method and apparatus of the present invention are not limited to the above-described embodiments. For example, in the above-described embodiment, the slide drive mechanism is configured below the bolster 12, that is, an underdrive type, but may be configured to be provided above the slide 15. Further, the punch movement stop position can be arbitrarily set in accordance with the workpiece W as long as the punch 3 is a position before the punch 3 enters the recess 4 of the die 2.

In this invention, it is sectional drawing which shows the state before a punch rushes into the recessed part of die | dye (before work processing). FIG. In the state in FIG. 1, it is a top view which shows the state which is holding the outer peripheral surface of a workpiece | work with a finger. It is sectional drawing which shows the state which the punch plunges into the recessed part of die | dye and is processing the workpiece | work. FIG. In FIG. 4, it is sectional drawing which shows the workpiece | work of each process processed. It is a stroke diagram which shows 1 cycle of a press. It is front sectional drawing which shows the cam press of one form of this invention. FIG. It is a side view which shows the drive part of the cam press of FIG. It is a front view which shows the cam with which the cam press machine of this invention is mounted | worn. It is a stroke diagram of the ram formed with the conventional cam press machine.

Explanation of symbols

2, die 3, punch 4, recess 8, finger 10, cam press 15, slide 20, slide drive mechanism 21, main shaft 22, cam 22A, ascending cam (first cam)
22B, processing cam (second cam)
23A, cam roller 23B, cam roller Q1, point Q2 indicating the position having the maximum radius of the rising cam, point P1 indicating the position having the minimum radius of the rising cam, point P2 indicating the position having the maximum radius of the processing cam, Points indicating the position having the maximum radius of the machining cam T2, T3, dwell section S2 and S3 for the lifting cam, dwell section W for the machining cam, work PL, pass line

Claims (2)

The workpiece that is drawn by moving the punch toward the die is conveyed by being gripped by a finger of the transfer device, and the posture of the workpiece is supported by the finger during conveyance and the posture during machining. Is processed by being supported by the punch,
Movement of the punch toward and away from the die in a section in which the workpiece is gripped by the finger before the punch presses the workpiece and a section in which the workpiece is gripped by the finger before the punch comes out of the workpiece A work processing apparatus for a press provided with a slide drive mechanism configured to form a stroke curve with a stop section for stopping
A slide equipped with an upper mold having the punch, and a bolster equipped with a lower mold equipped with the die,
A first cam that raises the slide and a second cam that processes the workpiece; a pair of the second cams arranged with the first cam in between;
The first cam has a dwell portion that forms a stop section that stops the upward movement of the punch, and the second cam has a dwell section that forms a stop section that stops the downward movement of the punch,
The dwell portions of the first cam are respectively arranged in symmetrical positions with respect to an imaginary line connecting the axial center of the first cam and the position having the minimum radius on the outer peripheral surface of the first cam; The dwell portions of the second cam are respectively arranged at symmetrical positions with respect to an imaginary line connecting the axial center of the second cam and the position having the maximum radius on the outer peripheral surface of the second cam. press work machining apparatus characterized by there. The press work processing apparatus according to claim 1 , wherein the slide drive mechanism is disposed below the bolster .

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