JP7230289B2 - Work side forming device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work side forming apparatus for forming the side of a work by driving the work from the length direction.

2. Description of the Related Art A multi-process forging machine is known that sequentially forms a workpiece through a plurality of forming processes each having a punch and a die. In general, the punch operates in the lengthwise direction of the work and applies a load toward the end faces in the lengthwise direction of the work. However, depending on the desired final shape of the work, it may be necessary to form the side of the work. A technical example corresponding to this need is disclosed in Patent Document 1.

The parts manufacturing apparatus of Patent Document 1 relates to a forging machine that has a die block with a die and a punch block with a punch and performs forming processing on a work, and is provided with lateral hole forming means for forming a lateral hole in the work. It is characterized by The lateral hole forming means includes a first moving body that is struck by a punch and moves in the striking direction, a second moving body that is pressed by the first moving body and moves in an orthogonal direction, and a second moving body that is provided on the second moving body and moves in the workpiece. an extension forming a lateral hole. This lateral hole forming means is attached to the process next to the process where the workpiece is held. In other words, this parts manufacturing apparatus requires a space for two processes of the forging machine.

JP 2016-221535 A

By the way, in the parts manufacturing apparatus of Patent Document 1, since two steps are used for forming the lateral hole, the number of steps of the forging machine is substantially reduced, and the shape of the workpiece that can be formed is restricted. Further, in Patent Document 1, the slope of the return member pushes the second moving body in order to detach the extended portion after the forming process from the work. However, the extension part has a problem that it is difficult to detach from the work and it is easily damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the background art described above, and it is an object of the present invention to provide a workpiece side forming apparatus capable of forming the side of a workpiece in one process of a multi-process forging machine. Make it an issue.

The workpiece side forming apparatus of the present invention includes a die that holds the workpiece with at least a portion of the widthwise side surface of the workpiece open, a punch that moves in the length direction of the workpiece that is held, and a punch that moves along the length of the workpiece. a side forming punch driven in the width direction of the work by the operation to form the open side of the work; a first pressing surface that is incorporated in any one step of a multi-step forging machine and that holds the side forming punch and is inclined with respect to the length direction of the workpiece; and the punch has a first pressing surface that is inclined with respect to the length direction of the work and presses the first pressed surface of the width direction motion member.

In the work side forming apparatus of the present invention, side forming punches and return drive members are added to the dies and punches arranged in one process of the multi-process forging machine to enable forming of the side surfaces of the work. Therefore, the work side surface forming apparatus can form the side surface of the work in one process, and does not substantially reduce the number of processes of the multi-process forging machine.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view schematically showing the overall configuration of a multi-process forging machine into which the work side shaping device of the embodiment can be incorporated; It is the figure which showed the shape of the workpiece|work which a workpiece|work side surface shaping|molding apparatus shape|molds. 1 is an exploded perspective view of a work side forming device according to an embodiment; FIG. It is a perspective view of a workpiece side forming device. FIG. 2 is a partially enlarged perspective view of a work side forming device; FIG. 4 is a side cross-sectional view of a waste material storage portion provided in a cored bar that constitutes the die. FIG. 4 is a side cross-sectional view showing a state immediately before the workpiece is inserted into the die; FIG. 4 is a side cross-sectional view showing a state at the moment when a work is inserted and a lateral hole is formed; FIG. 11 is a side cross-sectional view showing a state in which the return drive member is in operation; FIG. 4 is a side cross-sectional view showing a state in which a molded workpiece is ejected from a die by a knockout pin;

First, the multi-process forging machine 10 in which the workpiece side forming apparatus 1 of the embodiment is incorporated will be described. FIG. 1 is a plan view schematically showing the overall configuration of a multi-process forging machine 10 into which a work side forming apparatus 1 of the embodiment can be incorporated. The multi-process forging machine 10 is composed of a frame 21, a ram 24, five sets of punches 26 and dies 23, a transfer device 27, a driving section 9, and the like. The multi-process forging machine 10 sequentially forms the workpiece in first to fifth processes, which are composed of five sets of punches 26 and dies 23 . The vertical direction of the paper surface of FIG. 1 is the width direction of the multi-process forging machine 10, and the horizontal direction of the paper surface is the front-rear direction. The front-rear direction coincides with the direction in which an axis AX, which will be described later, extends. In FIG. 1, the first to fifth steps are arranged from the upper side of the paper to the lower side of the paper in the width direction.

The frame 21 is a housing for arranging each part, and is made of iron and formed robustly. The five die holders 22 are arranged side by side in the width direction of the frame 21 . Five sets of dies 23 are replaceably attached to the rear side of each die holder 22 . A predetermined working die is formed on the rear side of each die 23 facing left in the figure.

The ram 24 is generally rectangular in plan view and reciprocates in the front-rear direction. Five punch holders 25 are provided side by side in the width direction on the front side of the ram 24 . Five punches 26 are replaceably attached to the front side of each punch holder 25 . A predetermined working die is formed on the front side of each punch 26 facing right in the figure. Each punch 26 reciprocates with ram 24 . In each step, the punch 26 and the die 23 are arranged facing each other with the axis AX in common.

The multi-process forging machine 10 includes a cutting mechanism (not shown) having a ring-shaped movable cutter, a wire feeding mechanism, and a pusher mechanism. The movable cutter cuts the long wire inserted into the ring by the wire feeding mechanism to create a columnar workpiece of a predetermined size. A pusher mechanism pushes the workpiece out of the movable cutter. Examples of the work material include aluminum, iron, and various alloys.

The transfer device 27 is arranged from above the die holder 22 to the front of the die 23 . The transfer device 27 has six finger pairs for gripping the work. The most upstream first pair of fingers grips the work in the cutting mechanism and conveys it to the first process. The second to fifth finger pairs grip the workpiece in the upstream process and convey it to the downstream process. The sixth pair of fingers on the most downstream side grips the workpiece in the fifth step and conveys it to an unillustrated carry-out section.

A drive 9 is provided for driving the ram 24 back and forth. The drive unit 9 is composed of a main drive source 91, various transmission mechanisms, cam mechanisms, and the like. The main drive source 91 can be, for example, an induction motor or a synchronous motor operating on a three-phase AC power supply. The drive unit 9 drives the transfer device 27 and the cutting mechanism together. The driving force of the main drive source 91 is input to the crankshaft 95 that drives the ram 24 via the flywheel 92 , the disc brake 93 and the speed reduction mechanism 94 . Further, the driving force is branched and transmitted from the crankshaft 95 to the side shaft 97 via the pair of branched gears 96 .

The side shaft 97 branches and transmits the driving force upward. The driving force branched upward drives the transfer cam 98 to rotate. A transfer cam 98 drives the transfer device 27 . In addition, six open-close cams 9A are connected so as to be rotationally driven from the side shaft 97 via the transfer drive 99 . The open-close cams 9A are arranged at regular intervals in the width direction. The open/close cam 9A drives the finger pairs to open and close.

Further, the side shaft 97 is provided with a cutter cam 9B and is connected with a pusher cam 9C, a feed cam 9D, a feed roller 9E, five knockout cams 9F, and a return drive cam 9H. The cutter cam 9B, pusher cam 9C, feed cam 9D, and feed roller 9E drive the cutting mechanism. The knockout cams 9F are arranged at equal intervals in the width direction and correspond to the positions of the first to fifth steps, respectively. The fifth step knockout cam 9F drives a knockout pin 61, which will be described later. Furthermore, a return drive cam 9H is arranged in line with the knockout cam 9F of the fifth step. The return drive cam 9H drives a return drive member 65, which will be described later.

The description of the workpiece side surface forming apparatus 1 according to the embodiment will now be described. The work side surface forming device 1 may be incorporated in any one of the first to fifth processes of the multi-process forging machine 10 . In this embodiment, the work side forming apparatus 1 is incorporated in the fifth step. FIG. 2 is a diagram showing the shape of the work W to be formed by the work side forming apparatus 1. As shown in FIG.

The outer shape of the work W is a cylindrical shape with an outer diameter D1 and a length L. As shown in FIG. A bottomed hole having a diameter D2 is formed in one end face of the cylindrical shape. In other words, the work W has a cylindrical shape WC in part in the length direction. This workpiece W is formed in first to fourth steps. The work side surface forming device 1 incorporated in the fifth step punches the side surface of the cylindrical WC of the work W from the lateral direction to form a lateral hole WH. During forming, the lengthwise direction of the workpiece W coincides with the longitudinal direction of the multi-process forging machine 10 (the direction in which the axis AX extends).

FIG. 3 is an exploded perspective view of the workpiece side forming device 1 of the embodiment. 4 is a perspective view of the work side forming device 1, and FIG. 5 is a partially enlarged perspective view of the work side forming device 1. As shown in FIG. In order to make FIGS. 4 and 5 easier to see, some members are omitted, and some members are drawn in an arrangement different from the actual assembled state. 3, 4, and 5 correspond to the front side, and the left side of the page corresponds to the rear side.

The workpiece side forming apparatus 1 includes a die 23, a spring 5 corresponding to an urging member, a width direction operating member 4, a side forming punch 45, a knockout pin 61, a return driving member 65, a pressing member 71 provided on the punch 26, and It is composed of a workpiece insertion member 75 and the like. FIG. 6 is a side cross-sectional view of the waste material accommodating portion 37 provided in the cored bar 36 that constitutes the die 23. As shown in FIG. 7 to 10 show side sectional views of the workpiece side forming apparatus 1. FIG.

The dies 23 consist of a rear die 31 , a middle die 32 , a front die 33 , a lower die 34 , an upper die 35 and a metal core 36 . The rear die 31 is a thick disc-shaped member. A workpiece insertion hole 311 having a circular cross section is formed on the center axis AX of the rear die 31 . The work insertion hole 311 supports the outside of the work W that has been inserted. A driving hole 312 having a rectangular cross section is formed near the upper portion of the rear die 31 . A rear die 31 is arranged on the rear side close to the punch 26 .

The middle die 32 is a disc-shaped member that is thicker than the rear die 31 and has substantially the same diameter. On the axis AX of the middle die 32, a round-bar-shaped core bar 36 is erected in a rearward horizontal direction. The tip shape of the rear portion of the cored bar 36 substantially matches the internal shape of the cylindrical WC of the work W. As shown in FIG. A waste material accommodating portion 37 formed of a through hole penetrating in the vertical direction is provided near the rear portion of the cored bar 36 . Pin passing holes 321 are drilled at three positions on the lower side, the right side, and the left side of the axis AX of the middle die 32 and are equidistant from the axis AX. A drive hole 322 is formed above the axis AX of the middle die 32 . The middle die 32 is arranged in parallel with the rear die 31 while being separated in front of the rear die 31 .

The front die 33 is a cylindrical member that is thicker than the rear die 31 and the middle die 32 and has substantially the same diameter. The front die 33 has three pin passing holes 331 formed at the same positions as the three pin passing holes 321 of the middle die 32 . Further, the front die 33 has a drive hole 332 formed at the same position as the drive hole 322 of the middle die 32 . The front die 33 is arranged in close contact with the front side of the middle die 32 .

A lower die 34 and an upper die 35 are arranged between the rear die 31 and the middle die 32 . The lower die 34 and the upper die 35 are generally semi-cylindrical members obtained by splitting a horizontal cylinder vertically into two. A workpiece support groove 341 (see FIGS. 4 and 5) having a semicircular groove cross section in the width direction and along the axis AX is formed in the rear portion of the lower die 34 . The work support groove 341 supports the outside of the work W inserted from the work insertion hole 311 of the rear die 31 . A discharge hole 342 (see FIG. 6) penetrating downward is formed in the middle of the work support groove 341 . A pin receiving groove 343 larger than the work support groove 341 and extending along the axis AX is formed in the lower die 34 near the front. The knockout pin 61 is accommodated in the pin accommodation groove 343 .

A guide holding portion 344 is provided between the work support groove 341 and the pin accommodation groove 343 . A guide member 345 is fitted in the guide holding portion 344 . The guide member 345 has a guide hole that holds the knockout pin 61 and guides it in the front-rear direction. Bottomed spring receiving holes 347 are provided on both left and right sides of the work support groove 341 of the lower die 34 and on both left and right sides of the pin receiving groove 343 . The springs 5 are accommodated in the four spring accommodating holes 347 in total. The spring 5 has a coil shape and is used in a compressed state.

A substantially rectangular parallelepiped internal space 351 is formed in the upper die 35 . The internal space 351 extends from the rear die 31 to the middle die 32 . The upper die 35 does not support the workpiece W directly. On the other hand, the rear die 31 and the lower die 34 serve as outer dies that support the outside of the work W. As shown in FIG.

The width direction motion member 4 is arranged in the internal space 351 of the upper die 35 . The width direction motion member 4 moves in the vertical direction, in other words, in the width direction of the workpiece W. As shown in FIG. A first pressed surface 43 is formed on the rear side of the upper surface of the width direction motion member 4 . The first pressed surface 43 is inclined with respect to the axis AX, and is farther from the axis AX toward the front side. A second pressed surface 44 (see FIG. 7) is formed on the front side of the lower surface of the width direction motion member 4 . The second pressed surface 44 is inclined with respect to the axis AX, and is farther from the axis AX toward the front side.

A side forming punch 45 is buried downward near the rear side of the width direction motion member 4 . The side forming punch 45 protrudes downward by a predetermined length from the lower surface of the width direction motion member 4 . The side forming punch 45 is pressed against the side surface of the cylindrical WC of the work W to form the lateral hole WH. The width direction motion member 4 is normally driven upward by the biasing force of four springs 5 (see FIG. 7).

The knockout pin 61 is arranged from the inner space 351 of the upper die 35 to the pin accommodation groove 343 of the lower die 34 . The knockout pin 61 is positioned on the axis AX on the lower side of the width direction motion member 4 . The knockout pin 61 is held by the guide hole of the guide member 345 so as to be movable in the front-rear direction.

The knockout pin 61 is formed of a cylindrical member having an outer diameter D1 of the work W substantially equal to that of the work W. As shown in FIG. A metal core 36 is arranged inside the knockout pin 61 . The front side of the knockout pin 61 maintains a cylindrical shape. The rear side of the knockout pin 61 is separated into left and right, and can abut on the front surface of the inserted workpiece W. Separated left and right cross sections each have an arc shape. The separated left and right lower gaps serve as discharge slits 62 (see FIGS. 4 and 5) for dropping waste materials from the waste material storage portion 37 of the core metal 36 .

Three intermediate pins 63 are arranged in front of the knockout pin 61 . The intermediate pin 63 extends forward through the pin passing hole 321 of the middle die 32 and the pin passing hole 331 of the front die 33 . The front ends of the three intermediate pins 63 are driven together in the longitudinal direction by the knockout cam 9F. As a result, the knockout pin 61 is driven rearward through the intermediate pin 63 to project the workpiece W rearward from the die 23 .

The return driving member 65 is a rod-shaped member that can move in the front-rear direction. The return drive member 65 is arranged to pass through the drive hole 322 of the middle die 32 and the drive hole 332 of the front die 33 . A second pushing surface 66 is formed on the upper rear side of the return driving member 65 . The second pressing surface 66 is inclined with respect to the axis AX, and is farther from the axis AX toward the front side. The front end of the return drive member 65 is driven in the front-rear direction by the return drive cam 9H. When the return driving member 65 is driven rearward, the second pushing surface 66 pushes the second pushed surface 44 of the width direction action member 4 .

In this embodiment, the return drive member 65 moves backward first, and then the knockout pin 61 moves backward. A drive mechanism that realizes this includes a return drive cam 9H and a knockout cam 9F that are driven by a main drive source 91. As shown in FIG. The return drive cam 9H and the knockout cam 9F are formed in cam shapes different from each other. By modifying the shape of the two cams, the operation timings of the return driving member 65 and the knockout pin 61 can be individually and freely adjusted. Note that the drive mechanism is not limited to the two cams described above, and can be modified. For example, even if one or both of the cams are replaced with a hydraulic drive, the effect of being able to individually and freely adjust the operation timing does not change. Also, a motor different from the main drive source 91 can be used instead of the cam.

On the other hand, the punch 26 is provided with a pushing member 71 and a workpiece inserting member 75 . The pushing member 71 is a square bar-shaped member, fixed to the upper portion of the punch 26 and extending forward. A first pressing surface 72 is formed on the lower front side of the pressing member 71 . The first pressing surface 72 is inclined with respect to the axis AX, and is farther from the axis AX toward the front side. The pushing member 71 moves forward and passes through the drive hole 312 of the rear die 31 . Thereby, the first pressing surface 72 can press the first pressed surface 43 of the width direction motion member 4 .

The workpiece inserting member 75 is provided on the axis AX of the punch 26 . The workpiece insertion member 75 is a rod-shaped member and extends in the front-rear direction. A flanged enlarged diameter portion 76 is attached to the rear portion of the workpiece insertion member 75 . The flanged enlarged diameter portion 76 is accommodated in the interior 261 of the punch 26 (see FIGS. 3 and 7). Further, inside 261 of punch 26 , a coil spring 77 is provided that surrounds enlarged diameter portion 76 with a collar. A coil spring 77 urges the workpiece inserting member 75 forward. As a result, the workpiece inserting member 75 can move relative to the punch holder 25 in the front-rear direction.

As shown in FIG. 6 , the waste material storage section 37 is located directly below the side forming punch 45 and directly above the discharge hole 342 of the lower die 34 . The shape and cross-sectional area of the entrance 371 of the waste material container 37 near the side forming punch 45 substantially match the cross-sectional shape and cross-sectional area of the side forming punch 45 . On the other hand, the cross-sectional area of the interior 372 of the scrap container 37 away from the side forming punches 45 is greater than the cross-sectional area of the inlet 371 .

Furthermore, a suction discharge section 38 is provided between the discharge hole 342 and a recovery box (not shown). The suction discharge part 38 sucks the inside of the discharge hole 342 (see arrow F in FIG. 6) and forcibly discharges the waste material Z, which will be described later. A suction pump can be exemplified as the suction discharge unit 38 . It should be noted that the suction/discharge portion 38 may be omitted.

Next, the operation, function, and effect of the work side forming apparatus 1 of the embodiment will be described. FIG. 7 is a side sectional view showing a state immediately before the workpiece W is inserted into the die 23. As shown in FIG. FIG. 8 is a side cross-sectional view showing the state at the moment when the work W is inserted and the lateral hole WH is formed. FIG. 9 is a side sectional view showing a state in which the return driving member 65 is in operation. FIG. 10 is a side cross-sectional view showing a state in which the work W that has been formed and processed is pushed out from the die 23 by the knockout pin 61. As shown in FIG.

In the state shown in FIG. 7, the width direction motion member 4 is driven upward by the biasing force of the four springs 5. As shown in FIG. Also, the knockout pin 61, the intermediate pin 63, and the return drive member 65 have moved forward. On the other hand, the workpiece W sandwiched by the pair of fingers of the transfer device 27 is carried in from the fourth step to the front side of the workpiece inserting member 75 . Ram 24 and punch 26 have begun forward movement toward die 23 . The work inserting member 75 advances together with the punch 26 to push the work W forward.

The work W advances with the cylindrical WC in front and is inserted into the work insertion hole 311 of the rear die 31 . When the work W advances further, the core metal 36 is fitted inside the cylindrical WC, and the setting of the work W is completed. The outside of the work W is supported by the rear die 31 and the lower die 34 . At this time, the upper half of the side surface of the cylindrical WC remains open. The ram 24 and punch 26 continue to move forward even after the work W is set. As a result, the coil spring 77 is compressed and the workpiece inserting member 75 retreats relative to the punch 26 .

When the setting of the work W is completed, the first pressing surface 72 of the pressing member 71 presses the first pressed surface 43 of the width direction motion member 4 . The pushed width direction motion member 4 descends against the biasing force of the four springs 5 to reach the state shown in FIGS. That is, as the width direction motion member 4 descends, the side surface forming punch 45 is driven in the width direction of the work W, punches the side surface of the cylindrical WC, and forms the side hole WH.

At this time, since the entrance 371 of the waste material accommodating portion 37 is narrowly formed, the core metal 36 functions sufficiently, and the shape of the periphery of the lateral hole WH of the work W is not distorted. Also, the tip of the side forming punch 45 passes through the inlet 371 and reaches the interior 372 . Therefore, waste materials Z (punching scraps) generated when punching is performed are accommodated in the wide interior 372 . Therefore, a situation in which the waste material Z clogs the waste material storage section 37 and cannot be discharged does not occur.

When the pressing member 71 and the workpiece inserting member 75 begin to retreat after the molding process is completed, the biasing force of the four springs 5 presses the width direction motion member 4 upward. In other words, the four springs 5 bias the side forming punch 45 away from the side surface of the workpiece W. As shown in FIG. At this time, there may be a case where the side forming punch 45 is stuck in the lateral hole WH and the width direction motion member 4 does not rise.

Nevertheless, the return drive member 65 is driven rearward in accordance with the retreat of the push member 71 . The second pressing surface 66 of the return driving member 65 presses the second pressed surface 44 of the width direction motion member 4 . As a result, the biasing force of the spring 5 and the pushing force of the return drive member 65 are superimposed to push up the width direction motion member 4 . Therefore, as shown in FIG. 9, the side surface forming punch 45 can be reliably separated from the work W after the forming process.

Subsequently, not only the return drive member 65 but also the intermediate pin 63 are driven rearward. As a result, the knockout pin 61 protrudes the workpiece W that has undergone the forming process to the rear of the die 23, as shown in FIG. The projecting work W is transported to the unloading section by the transfer device 27 .

When the work W retreats from the core metal 36 , the waste material Z drops from the waste material storage section 37 . The waste material Z further passes through the discharge slit 62 of the knockout pin 61, falls through the discharge hole 342 of the lower die 34, and is discharged into the collection box. At this time, the suction and discharge unit 38 operates, so that the waste materials Z are reliably collected without being scattered.

In the work side forming apparatus 1 of the embodiment, the side forming punch 45 and the return driving member 65 are added to the die 23 and the punch 26 arranged in one process of the multi-process forging machine 10 to form the side surface of the work W. becomes possible. Also, the spring 5 is arranged inside the die 23, and the return driving member 65 is driven from the front side in the process. In addition, the pushing member 71 and the return driving member 65 utilize the function of changing the direction of the pushing force using the inclined surface. Furthermore, the return drive member 65 and the knockout pin 61 are driven by a return drive cam 9H and a knockout cam 9F as drive mechanisms. By combining these, the work side forming apparatus 1 has a compact configuration, and can be incorporated into one process of the multi-process forging machine 10 . Therefore, the work side forming apparatus 1 does not substantially reduce the number of processes of the multi-process forging machine 10 .

Also, the width direction motion member 4 and the side surface forming punch 45 are pressed upward by the biasing force of the four springs 5 after being subjected to the forming process. At this time, the resultant force of the four springs 5 pushes the width direction motion member 4 upward. Therefore, the side surface forming punch 45 generates almost no shearing force, and is less likely to be damaged such as broken. Further, even if the width direction motion member 4 does not operate only by the biasing force of the spring 5, the return drive member 65 operates to apply the pushing force. In other words, the side forming punch 45 is driven away from the side of the workpiece W by both the return drive member 65 and the spring 5 . Therefore, the pressing force of the return drive member 65 and the biasing force of the spring 5 are superimposed, so that the side forming punch 45 can be reliably separated from the workpiece W.

Furthermore, the workpiece side forming apparatus 1 can form the lateral hole WH using three members, namely, the pushing member 71 integrally provided with the punch 26, the width direction movement member 4, and the side forming punch 45. . According to this, the workpiece side forming apparatus 1 has a reduced number of constituent members compared to the configuration of Patent Document 1.

In addition, a construction is employed to rationally discharge the waste material Z generated when the horizontal hole WH is formed in the work W. More specifically, the metal core 36 is provided with the waste material storage portion 37, the knockout pin 61 is provided with the discharge slit 62, and the lower die 34 is provided with the discharge hole 342, so that the waste material Z is automatically dropped. Furthermore, a suction discharge portion 38 is provided between the discharge hole 342 and the collection box. According to this, the work side forming apparatus 1 can automatically and reliably collect the waste material Z, which is highly reliable and convenient.

In addition, although the workpiece|work W which has a bottomed hole was illustrated in embodiment, the workpiece|work which has a through-hole may be sufficient. In addition, the present invention can be applied to applications other than the punching of the lateral hole WH, such as engraving or denting the side surface of a work. Various other modifications and applications are possible for the present invention.

1: Work side surface forming device 23: Die 26: Punch 31: Rear die 32: Middle die 34: Lower die 342: Waste material discharge hole 35: Upper die 36: Core metal 37: Waste material storage part 371: Inlet 372: Inside 38: Suction and Ejection Part 4: Width Direction Operating Member 43: First Pressed Surface 44: Second Pressed Surface 45: Side Forming Punch 5: Spring 61: Knockout Pin 62: Ejection Slit 65: Return Drive Member 66: Second Push Surface 71: Pushing member 72: First pushing surface 75: Workpiece insertion member 9F: Knockout cam 9H: Return driving cam 10: Multi-process forging machine W: Workpiece WC: Cylindrical WH: Lateral hole AX: Axis

Claims (8)

a die for holding the work with at least a part of the side surface in the width direction of the work open;
a punch that moves along the length of the held workpiece;
a side forming punch that is driven in the width direction of the work by the operation of the punch and performs forming on the open side of the work;
a return drive member for driving the side surface forming punch after forming processing in a direction away from the side surface of the work, and incorporated in any one step of a multi-process forging machine ,
further comprising a width direction motion member holding the side surface forming punch and having a first pressed surface inclined with respect to the length direction of the work;
The punch has a first pressing surface that is inclined with respect to the length direction of the work and that presses the first pressed surface of the width direction motion member,
Work side forming device. a die for holding the work with at least a part of the side surface in the width direction of the work open;
a punch that moves along the length of the held workpiece;
a side forming punch that is driven in the width direction of the work by the operation of the punch and performs forming on the open side of the work;
a return drive member for driving the side surface forming punch after forming processing in a direction away from the side surface of the work, and incorporated in any one step of a multi-process forging machine ,
a knockout pin for projecting the workpiece from the die;
a drive mechanism that first drives the return drive member and then drives the knockout pin;
further comprising
The drive mechanism is
a return drive cam that drives the return drive member; and a knockout cam that drives the knockout pin;
Operation timings of the return drive member and the knockout pin can be individually adjusted.
Work side forming device. a die for holding the work with at least a part of the side surface in the width direction of the work open;
a punch that moves along the length of the held workpiece;
a side forming punch that is driven in the width direction of the work by the operation of the punch and performs forming on the open side of the work;
a return drive member for driving the side surface forming punch after forming processing in a direction away from the side surface of the work, and incorporated in any one step of a multi-process forging machine ,
a knockout pin for projecting the workpiece from the die;
a drive mechanism that first drives the return drive member and then drives the knockout pin;
further equipped with
The drive mechanism is
a cam for driving one of said return drive member and said knockout pin, and a hydraulic drive for driving the other of said return drive member and said knockout pin;
Operation timings of the return drive member and the knockout pin can be individually adjusted.
Work side forming device. a die for holding the work with at least a part of the side surface in the width direction of the work open;
a punch that moves along the length of the held workpiece;
a side forming punch that is driven in the width direction of the work by the operation of the punch and performs forming on the open side of the work;
a return drive member for driving the side surface forming punch after forming processing in a direction away from the side surface of the work, and incorporated in any one step of a multi-process forging machine ,
At least part of the work in the length direction is cylindrical,
The die comprises an outer die that supports the outside of the work, and a core bar that is arranged inside the cylindrical shape of the work,
The core bar has a waste material storage section for storing waste materials generated when the side forming punch punches the tubular shape of the work,
Further comprising a knockout pin that has a discharge slit for passing the waste material falling from the waste material storage portion of the core bar and projects the work from the outer die and the core bar,
Work side forming device. 5. The workpiece side molding according to claim 4 , further comprising a discharge hole provided in said outer die for discharging said waste material, and a suction discharge part for forcibly discharging said waste material by sucking the inside of said discharge hole. Device. 6. The workpiece side forming apparatus according to claim 4, wherein said waste material accommodating portion is a through hole having a larger cross-sectional area on a side away from said side forming punch than on a side closer to said side forming punch. 7. The workpiece side forming apparatus according to claim 1, further comprising a biasing member disposed inside said die and biasing said side forming punch in a direction away from said side surface of said work. further comprising a width direction motion member holding the side surface forming punch and having a second pressed surface inclined with respect to the length direction of the work;
The return drive member operates in the length direction of the work, and is inclined with respect to the length direction of the work to push the second pushed surface of the width direction movement member. having a moving surface,
The workpiece side forming apparatus according to any one of claims 1 to 7 .

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