JP6576717B2 - Mold installation jig and mold installation method - Google Patents

Description

  The present invention relates to a mold installation jig and a mold installation method for installing a mold on a processing machine.

2. Description of the Related Art A device that mounts a die on a processing machine and attaches a workpiece to a workpiece attachment hole of the die to process the workpiece, for example, a shaft enlargement processing device is known.
In this shaft enlargement processing apparatus, both ends of rod-shaped metal workpieces arranged along a reference line are respectively held by holder units, and these holder units are rotated relatively close to each other along the reference line. Furthermore, there is a conventional example in which one diameter of the holder unit is inclined with respect to the other holder unit to form a collar having an enlarged diameter in the middle of the workpiece (Patent Document 1).
In the conventional example of Patent Document 1, the pair of holder units includes a support outer cylinder and a spindle rotatably provided on the support outer cylinder, and a sleeve (mold) is fitted to the spindle.

If the type of workpiece to be processed is different, the mold must also be changed. Therefore, different types of dies are installed according to the shape of the workpiece.
Conventionally, an operator carries a mold selected in accordance with a workpiece to a position where a holder unit is located and installs the mold on a spindle.

Japanese Patent Laid-Open No. 2008-200696

In the conventional example of Patent Document 1, the worker carries the mold to the shaft enlargement processing apparatus and installs it on the spindle. However, when the workpiece becomes larger, the mold becomes heavier and the mold is transported. And installation work becomes complicated.
For heavy molds, a crane or other transfer machine can be used to transfer them to the vicinity of the holder unit, but even if a transfer machine is used, the mold can be easily installed on the spindle. Is not limited. In particular, the positioning of the mold on the spindle is carefully performed because it also affects the accuracy of the final product.

  An object of the present invention is to provide a mold installation jig and a mold installation method capable of easily carrying and installing a mold to a processing machine.

The mold installation jig of the present invention is a jig for installing a mold in which a work mounting hole is formed on a processing machine, and a mold holding unit for holding the mold and the mold holding And a plurality of bars arranged in parallel to each other, the mold holding part includes a frame, a mold engaging part for engaging the mold, and the mold engaging part A pull-in mechanism that pulls in toward the center of the frame, and the plurality of bars are located on a virtual circle centered on the axial center setting position of the workpiece mounting hole when the mold is installed on the processing machine. It is possible to contact the reference part formed in
The shaft cores of the plurality of bars are respectively positioned on virtual circles centered on the shaft cores of the work attachment holes of the mold held by the mold holding part.

In this invention, a metal mold | die holding | maintenance part hold | maintains a metal mold | die, A jig for metal mold | die installation is conveyed to a processing machine with conveying apparatuses, such as a crane, in this state. Then, the plurality of bars are brought into contact with a reference portion formed on the processing machine. The reference portions with which each of the plurality of bars abuts are formed concentrically with the axis setting position of the workpiece mounting hole when the mold is installed on the processing machine, so that the plurality of bars abut with the reference portion, respectively. Thus, the mold is positioned with respect to the axial center setting position.
Therefore, in the present invention, since the mold can be transported to the processing machine using the tool for installing the mold, the transport work is facilitated. Moreover, the positioning of the mold on the processing machine can be performed by bringing the plurality of bars into contact with the reference portions of the processing machine, so that the installation work can be easily performed.

In addition , the mold can be easily held on the mold installation jig by being pulled into the center of the frame by the pulling mechanism while the mold is engaged by the mold engaging portion.
As a result, the mold is positioned at the center of the frame, so there is less risk of the mold falling from the frame when the mold installation jig is transported to the processing machine. Can be transported.

In the mold installation jig, a configuration including an extrusion mechanism that pushes the mold engagement portion toward an end of the frame is preferable.
In this configuration, with the mold pulled into the center of the frame, a jig for placing the mold is placed at a predetermined position of the processing machine, and then the mold is pushed out toward the end of the frame by an extrusion mechanism. Thus, the mold can be easily installed at a predetermined position of the processing machine.

In the mold installation jig, the mold engaging portion is contacted when the mold is pulled by the pulling mechanism and when the mold is pushed out by the pushing mechanism. The structure which has the 2nd contact part which touches is preferable.
In this configuration, the mold is brought into contact with the first contact portion and the second contact portion, so that the mold can be reliably held when the mold is pulled in by the pulling mechanism or when the mold is pushed out by the extrusion mechanism. Can be moved. Therefore, the retracting mechanism and the extrusion mechanism can be operated reliably.

In the mold installation jig, the mold engagement portion includes a first mold engagement portion and a second mold engagement portion that are disposed in a pair with a center portion of the frame interposed therebetween, and the retraction The mechanism and the push-out mechanism have a first link and a second link each having one end rotatably connected to the first mold engaging portion, and one end rotated to the second mold engaging portion. A third link and a fourth link that are movably connected, a first block that is rotatably connected to the other end of the first link and the other end of the third link, and the second link. A pantograph mechanism having a second block rotatably connected to the other end of the fourth link and the other end of the fourth link, and a proximity separation mechanism for bringing the first block and the second block closer to each other. The structure provided with is preferable.
In this configuration, by operating the proximity separation mechanism, the mold can be drawn toward the center of the frame or pushed out from the center toward the end. That is, prior to operating the retracting mechanism, the mold is engaged with the mold engaging portion, and then the first block and the second block are separated from each other by the proximity separation mechanism. Then, the 4th link moves from the 1st link, the 1st metallic mold engaging part and the 2nd metallic mold engaging part adjoin each other, and these metallic mold engaging parts have each engaged the metallic mold To move toward the center of the frame.
On the other hand, in order to install the metal fitting at a predetermined position of the processing machine, a plurality of bars are brought into contact with the reference portion of the processing machine, and the extrusion mechanism is operated in this state. Therefore, the first block and the second block are brought close to each other by the proximity separation mechanism. Then, the first mold engaging part and the second mold engaging part are separated from each other, and these mold engaging parts move toward the end of the frame in a state where the molds are engaged with each other. And a metal mold | die is installed in a processing machine.
In this configuration, since the pull-in mechanism and the push-out mechanism are composed of a pantograph mechanism having the first link to the fourth link, the structure of the mold installation jig can be simplified and the manufacturing cost can be reduced. it can.

In the mold installation jig, it is preferable that the proximity / separation mechanism includes a female screw portion formed in each of the first block and the second block, and a male screw portion screwed into the female screw portion.
In this configuration, since the proximity / separation mechanism includes the female screw portion and the male screw portion, the rotation amount of the male screw portion is proportional to the advance / retreat amount of the first block and the second block. Therefore, by a simple method of controlling the amount of rotation of the male screw portion, the amount of advancement / retraction between the first block and the second block, and hence the amount of movement between the first die engaging portion and the second die engaging portion, is determined. Can be controlled.

In the mold installation jig, a configuration in which a handle is connected to an end portion of the male screw portion via a universal joint is preferable.
In this configuration, the male screw portion can be easily rotated by the handle, and the metal fitting can be pulled in and pushed out from outside the processing machine. In other words, when the male screw part is arranged vertically and the male screw part is long, if the handle is directly connected to the end of the male screw part, the handle must be rotated from a position outside the machine. Therefore, the operation of rotating the male screw portion becomes complicated. When a universal joint is connected between the end of the male thread and the handle, the axial direction of the male thread and the axial direction of rotation of the handle can be changed. Even if it is arranged, the position of the handle, that is, the operation position can be easily adjusted.

In the mold installation jig, the pantograph mechanism is provided on the frame so as to be movable in parallel with the plurality of bars, and the frame includes an axial direction of the plurality of bars of the first mold engaging portion. It is preferable that a first stopper for restricting movement along the second die engaging portion and a second stopper for restricting movement of the second mold engaging portion along the axial direction of the plurality of bars are provided.
The size and weight of the mold may be different depending on what is engaged with the first mold engaging portion and what is engaged with the second mold engaging portion. When the pantograph mechanism is operated in the state where the molds having different weights are engaged with these mold engaging parts, only one of the first mold engaging part and the second mold engaging part is light, for example, Only the first mold engaging portion engaged with the mold moves toward the center of the frame. When one of the first mold engaging part and the second mold engaging part moves toward the center part of the frame, it comes into contact with one of the first stopper and the second stopper, and the movement is restricted. Thereafter, the other of the first mold engaging part and the second mold engaging part, for example, the mold engaging part engaged with the heavy mold moves toward the center of the frame. When the other of the first mold engaging portion and the second mold engaging portion moves toward the center of the frame, it abuts against the other of the first stopper and the second stopper, and the movement is restricted. As a result, the first mold engaging portion and the second mold engaging portion are positioned at the center of the frame in a state where the molds are engaged with each other.
Therefore, even if there is a difference in the weight or the like of the mold engaged with the first mold engaging portion and the second mold engaging portion, the mold can be reliably pulled into the center side of the frame.

In the mold installation jig, the processing machine is a shaft enlargement processing device that forms a collar having a diameter increased in the middle of a rod-shaped metal workpiece, and the reference portion is an outer peripheral portion of a spindle on which the mold is mounted. The structure which is is preferable.
In the shaft enlargement processing apparatus, a spindle for mounting a mold is mounted in advance. The spindle has a tip protruding, and the outer periphery of the protruding tip is a circle centered on the axis setting position of the workpiece mounting hole. Therefore, when the mold is installed, the work attachment holes of the mold coincide with the axis setting position by bringing a plurality of bars into contact with the outer peripheral portion of the spindle.
Therefore, the mold installation jig exhibits an excellent effect in the shaft enlargement processing apparatus.

Mold installation method of the present invention includes a mold holding portion for holding a mold workpiece mounting hole is formed, and a plurality of bars which are arranged parallel to each other provided on the mold holding unit, the The mold holding unit includes a frame, a mold engaging unit that engages the mold, and a retracting mechanism that draws the mold engaging unit toward the center of the frame, and the plurality of bars A mold is installed on a processing machine using a mold installation jig arranged on a virtual circle centering on the axis of the work attachment hole of the mold held by the mold holding part. In the method, the mold engaging part engaged with the mold is drawn toward a center part of the frame, and the mold installation jig in which the mold is held by the mold holding part is provided. The workpiece when transported to the processing machine, and the plurality of bars are installed on the processing machine. Characterized in that is brought into contact with the reference portion which is previously formed on a virtual circle around the axis set position of Tsukeana.
In this invention, there can exist an effect similar to the above-mentioned jig | tool for metal mold | die installation.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic sectional drawing which shows the whole structure of the shaft enlargement processing apparatus by which the jig | tool for metal mold | die installation concerning one Embodiment of this invention was installed. The schematic plan view of a shaft enlargement processing apparatus. The front view of the jig | tool for metal mold | die installation of this embodiment. The side view of the jig | tool for metal mold | die installation. The top view of the jig | tool for metal mold | die installation. The front view which shows the jig installation member in the state by which the jig | tool for metal mold | die installation was installed. The side view which shows the jig | tool installation member of the state in which the jig | tool for metal mold | die installation was installed. The top view which shows the jig installation member in the state by which the jig | tool for metal mold | die installation was installed. The side view which fractured | ruptured partially which shows a drive side metal mold | die. The partial front view which shows the other part of a drive side metal mold | die. The side view which partially judged the passive side metal mold | die. FIG. 4A shows a mold adapter, FIG. 4A is a side view in which a part of a drive side mold adapter is broken, FIG. 5B is a side view in which a part of a driven side mold adapter is broken, and FIG. Is a plan view of the adapter.

An embodiment of the present invention will be described with reference to the drawings.
The mold installation jig of this embodiment is used when installing a mold in a processing machine. The processing machine to which the present embodiment is applied is a shaft enlargement processing device that forms a collar having a diameter increased in the middle of a rod-shaped metal workpiece.
[Configuration of shaft enlargement processing equipment]
1 and 2 show the overall configuration of the shaft enlargement processing apparatus.
1 and 2, the shaft enlargement processing apparatus 1 includes an apparatus frame 2, a pair of support walls 3 provided on one end side of the apparatus frame 2, and a drive-side holder provided between the pair of support walls 3. A unit 4 and a driven holder unit 5 provided at the center of the apparatus frame 2 are provided.
The drive side holder unit 4 includes a unit frame 40, and the unit frame 40 includes a pair of side plates 40A disposed in the vicinity of the support wall 3, and a bottom plate 40B that connects lower ends of these side plates 40A.

A block-shaped support outer cylinder 41 is connected to an upper portion of the side plate 40A, and a spindle 42 is rotatably provided inside the support outer cylinder 41.
The spindle 42 holds the driving side mold 61 on the side close to the driven side holder unit 5, and the outer peripheral portion R of the portion exposed from the supporting outer cylinder 41 to the driven side holder unit 5 side is the driving side. A reference portion S for mounting the mold 61 on the spindle 42 is used. The spindle 42 is connected to a discharge cylinder 43 that discharges the work from the driving side mold 61. The drive-side mold 61 is disposed so that the axis of the workpiece mounting hole 61A is at the axis setting position P0. The work attachment hole 61A is a hole for attaching one end of a rod-shaped metal work (not shown).
A portion of the side plate 40A that protrudes from the support outer cylinder 41 is rotatably supported by the support wall 3 via a shaft 41A. The bottom plate 40B is provided with a tilt cylinder 44 that tilts the drive-side holder unit 4 with the shaft 41A as a rotation center.
The unit frame 40 is provided with an electric motor 45. The electric motor 45 rotates the spindle 42 and the driving side mold 61 via the belt 45A.

The driven-side holder unit 5 includes a slide base 55 provided in the apparatus frame 2 so as to be able to advance and retreat toward the drive-side holder unit 4 and a pressure cylinder 56 for moving the slide base 55 forward and backward. The slide base 55 is provided with a block-like support outer cylinder 51.
A spindle 42 is rotatably provided inside the support outer cylinder 51.
The spindle 42 holds the driven side mold 62 on the side close to the drive side holder unit 4, and the outer peripheral portion of the portion exposed from the support outer cylinder 51 to the driven side holder unit 5 side is the driven side mold. A reference portion S for mounting the mold 62 on the spindle 42 is used.
The spindle 42 is connected to a discharge cylinder 53 that discharges the workpiece from the driven mold 62.
The driven-side mold 62 is arranged so that the axis of the work mounting hole 62A is at the axis setting position P0. The work attachment hole 62A is a hole for attaching the other end of the rod-shaped metal work.

In the shaft enlargement processing device 1 having the above configuration, one end of a rod-shaped metal workpiece is attached to the drive-side mold 61, and the other end of the rod-shaped metal workpiece is attached to the driven-side mold 62. The spindle 42 and the drive-side mold 61 are tilted so that the shaft 41A is the center of rotation, and the electric motor 45 is rotated in the axial direction. Further, the pressure cylinder 56 advances the spindle 42 and the driven side mold 62 toward the driving side mold 61. Thereby, the diameter expanded in the middle of the rod-shaped metal workpiece is formed.
The mold installation jig 10 of this embodiment can be arranged on the reference portion S of the spindle 42 constituting the drive side holder unit 4 and the reference portion S of the spindle 42 constituting the driven side holder unit 5. The

[Configuration of jig for mold installation]
3 to 5 show the overall configuration of the mold installation jig 10.
3 to 5, the mold installation jig 10 includes a mold holding unit 11 that holds a mold, and two bars 12 that are provided on the mold holding unit 11 and arranged in parallel to each other. I have.
The drive side mold 61 includes a mold body 610 and an adapter 611 that is detachably provided on the mold body 610. The adapter 611 is formed in a disc shape, and is integrated with the mold main body 610 by a bolt B at a predetermined position on the outer peripheral edge thereof. An engaging disc 612 is provided on the shaft core portion of the adapter 611.
Similar to the drive-side mold 61, the driven-side mold 62 includes a mold body 620 and an adapter 621 that is detachably provided on the mold body 620. The adapter 621 is formed in a disc shape, and is integrated with the mold body 620 by a bolt B at a predetermined position on the outer peripheral edge thereof. An engaging disc 622 is provided on the shaft core portion of the adapter 621.
On the outer peripheral portions of the adapters 611 and 621, mold hanging metal fittings 63 are provided, respectively. The mold hanging metal fitting 63 is composed of an eyebolt or the like.

The mold holding unit 11 is movably provided on the frame 13, one end of the frame 13, and engages with the driving-side mold 61, and is movable on the other end of the frame 13. A second mold engaging portion 72 that engages with the driven side mold, and the first mold engaging portion 71 and the second mold engaging portion 72 are respectively pulled toward the center portion of the frame 13. In addition, a pantograph mechanism 15 that pushes out toward the end, and a universal joint 16 connected to the pantograph mechanism 15 are provided.
The frame 13 includes wall portions 131 and 132 arranged to face each other across the center portion of the frame 13, leg portions 133 fixed to the lower ends of the wall portions 131 and 132, and between the wall portion 131 and the wall portion 132. And a plurality of connecting rods 134 for connecting the two.
The two bars 12, the connecting rod 134, and the guide rod 135 are arranged in parallel to each other.
The wall portion 131 and the wall portion 132 are formed with a window portion 13 </ b> C through which the driving side mold 61 and the driven side mold 62 are inserted.

The first mold engaging portion 71 includes a first plate 710, an engaging hook 70 provided at the front center portion of the first plate 710, and a plurality of die receiving members provided at the lower end portion of the first plate 710. 70F.
The first plate 710 has a long plate-like portion 710A, short plate portions 710B provided at both ends of the long plate-like portion 710A, and end plate portions 710C provided on the short plate portion 710B. .
The engagement hook 70 has a clearance for accommodating the engagement disk 612 of the adapter 611 between the first plate 710 and has an arcuate engagement portion 70A that opens downward. The engaging disc 612 of the adapter 611 is engaged from the lower opening of the engaging portion 70A. When the drive side mold 61 is pulled, the surface of the engagement hook 70 that faces the first plate 710 is the first contact portion 701 that contacts the back surface of the engagement disk 612 of the adapter 611, and the drive side When the mold 61 is pushed out, the front surface of the first plate 710 is a second contact portion 702 that contacts the engagement disc 612.
The mold receiving member 70 </ b> F supports the lower part of the outer peripheral surface of the drive side mold 61.

The second mold engaging portion 72 has the same structure as the first mold engaging portion 71, and includes a second plate 720, an engagement hook 70 provided on the front surface of the second plate 720, and a second plate. A plurality of mold receiving members 70F provided at the lower end of 720;
The second plate 720 has the same structure as the first plate 710.
The engagement hook 70 has a clearance for accommodating the engagement disk 622 of the adapter 621 between the engagement plate 70 and the second plate 720, and has an arcuate engagement portion 72A that opens downward. The engaging disk 622 of the adapter 611 is engaged from the lower opening of the engaging portion 72A. When the driven side mold 62 is retracted, the surface of the engagement hook 70 that faces the second plate 720 is the first contact portion 701 that contacts the back surface of the engagement disk 622 of the adapter 621. When the mold 62 is pushed out, the front surface of the second plate 720 is a second contact portion 702 that contacts the engagement disc 622.
The mold receiving member 70 </ b> F supports the lower part of the outer peripheral surface of the driven side mold 62.

Jig hanging metal fittings 74 are provided on the upper edge of the first plate 710 and the upper edge of the second plate 720, respectively. The jig hanging metal fitting 74 is composed of, for example, an eyebolt.
The first plate 710 and the second plate 720 are movably supported by guide rods 135 provided on the walls 131 and 132 at both ends.
A first stopper (not shown) that restricts movement of the first plate 710 toward the end of the frame 13 is provided on the frame 13, and movement of the second plate 720 toward the end of the frame 13 is restricted. A second stopper (not shown) is provided on the frame 13.

The pantograph mechanism 15 includes a retracting mechanism 15A that pulls the first mold engaging portion 71 and the second mold engaging portion 72 toward the center of the frame 13, and the first mold engaging portion 71 and the second mold. It also serves as an extrusion mechanism 15B that pushes the engaging portion 72 toward the end of the frame 13.
The pantograph mechanism 15 includes a first link 181 and a second link 182 each having one end rotatably connected to the first plate 710, and a pair of one ends rotatably connected to the second plate 720. The third link 183 and the fourth link 184, the first block 191 rotatably connected to the other end of the first link 181 and the other end of the third link 183, and the second link 182, etc. The second block 192 is rotatably connected to the end portion and the other end portion of the fourth link 184, and the proximity separation mechanism 20 is configured to cause the first block 191 and the second block 192 to approach and separate from each other.

One end of the first link 181 is rotatably supported by a fixed part 180 fixed to the side surface of the center of the first plate 710, and the other end is rotatably supported by the first block 191. Has been. Two first links 181 are arranged with the fixed portion 180 and the first block 191 interposed therebetween.
One end portion of the second link 182 is rotatably supported by the fixed portion 180, and the other end portion is rotatably supported by the second block 192. Two second links 182 are arranged with the fixed portion 180 and the second block 192 interposed therebetween.
One end portion of the third link 183 is rotatably supported by a fixing portion 180 fixed to the side surface of the center portion of the second plate 720, and the other end portion is rotatably supported by the first block 191. ing. Two third links 183 are arranged with the fixed portion 180 and the first block 191 interposed therebetween.
One end of the fourth link 184 is rotatably supported by the fixing portion 180 of the second plate 720, and the other end is rotatably supported by the second block 192. Two fourth links 184 are arranged with the fixed portion 180 and the second block 192 interposed therebetween.
The first block 191 and the second block 192 are arranged side by side.

The proximity / separation mechanism 20 includes a female screw portion 20A formed extending vertically in the first block 191 and the second block 192, and a male screw portion 21 that is screwed into the female screw portion.
The male screw portion 21 is arranged extending vertically, and one end of the universal joint 16 is connected to the upper end portion thereof. The other end side to which the handle of the universal joint 16 is connected has the horizontal axis direction.
The universal joint 16 is locked to the mounting plate 16 </ b> A, and the mounting plate 16 </ b> A is fixed to one bar 12.

The bar 12 includes a columnar main body 120 provided on the walls 131 and 132 so as to be axially movable, a columnar engaging portion 121 fixed to each end of the columnar main body 120, and the center of the columnar main body 120. There are two fixing rings 122 fixed to each side, and a spring 123 provided between the fixing ring 122 and the walls 131 and 132.
The spring 123 has a function of buffering when one end of the bar 12 collides with the shaft enlargement processing device 1 or other portions.
The peripheral surface of the engaging portion 121 can be brought into contact with the reference portion S of the spindle 42. The reference portion S is centered on the outer peripheral portion R of the spindle 42, that is, the axis setting position P0 of the workpiece mounting holes 61A and 62A when the driving side mold 61 and the driven side mold 62 are installed on the spindle 42. It is formed on a circle.
As shown in FIG. 4, the shaft core P2 of the two bars 12 is on a virtual circle Q centering on the shaft core P1 of the work mounting holes 61A and 62A of the drive side mold 61 and the driven side mold 62. Located (only a part of the virtual circle Q is shown in FIG. 4). The virtual circle Q is a concentric circle with the outer peripheral portion R of the spindle 42 centered on the axis P1 of the workpiece mounting holes 61A and 62A. The radius of the virtual circle Q is a value obtained by adding the radius of the outer peripheral portion of the spindle 42 and the radius of the bar 12.

[Configuration of jig installation member]
When the driving side mold 61 and the driven side mold 62 are set in the mold installation jig 10 having the above configuration, the jig installation member 8 shown in FIGS. 6 to 8 is used.
As shown in FIGS. 6 to 8, the jig installation member 8 includes a planar rectangular base member 80 on which the mold installation jig 10 is placed, and a drive side metal provided on one end side of the base member 80. A first holding member 81 that holds the mold 61, a second holding member 82 that is provided on the other end side of the base member 80 and holds the driven mold 62, and a leg portion 83 that is provided on the lower surface of the base member 80. And have.
At the four corners of the base member 80, member suspension fittings 84 for suspending the jig installation member 8 are provided. The member suspension fitting 84 is made of, for example, an eyebolt.

The first holding member 81 includes a pair of column portions 85, a short member 86 disposed between the column portions 85, and a pair of bridge members respectively installed on the upper end portion of the column portion 85 and the upper end portion of the short member 86. The inclined member 87 is provided.
The outer peripheral lower surface of the drive-side mold 61 contacts the upper sides of the pair of inclined members 87. In this state, the axis of the work attachment hole 61 </ b> A of the drive side mold 61 coincides with the axis of the work attachment hole 61 </ b> A of the drive side mold 61 attached to the first mold engagement portion 71.
The second holding member 82 has the same configuration as the first holding member 81, and includes a pair of column portions 85, a short member 86, and a pair of inclined members 87.
The outer peripheral lower surface of the driven side mold 62 abuts on the upper sides of the pair of inclined members 87. In this state, the axis of the work mounting hole 62 </ b> A of the driven mold 62 matches the axis of the work mounting hole 62 </ b> A of the driven mold 62 attached to the second mold engaging portion 72.

[Mold configuration]
Specific configurations of the driving side mold 61 and the driven side mold 62 are shown in FIGS.
9 to 10 show a mold body 610 constituting the drive-side mold 61. FIG.
9 to 10, the mold body 610 has a work attachment hole 61 </ b> A formed in the shaft core. The shape of the workpiece attachment hole 61A is adapted to the shape of a workpiece (not shown).

A large-diameter hole 61B and a small-diameter hole 61C are arranged on a concentric circle centered on the axis of the work attachment hole 61A.
The large diameter hole 61 </ b> B is a hole through which a bolt (not shown) is inserted in order to connect the mold body 610 to the spindle 42.
The small diameter hole 61 </ b> C is an internal thread for connecting the adapter 611 and the mold body 610 with the bolt B.

FIG. 11 shows a mold main body 620 that constitutes the driven mold 62.
As shown in FIG. 11, a work attachment hole 62 </ b> A is formed in the axial center of the mold body 620. The shape of the workpiece attachment hole 62A is adapted to the shape of a workpiece (not shown).
A large-diameter hole 62M is formed on a concentric circle centered on the axis of the work attachment hole 62A. The large-diameter hole 62M is a hole through which a bolt (not shown) for connecting the mold body 620 to the spindle 42 is inserted.

FIG. 12 shows adapters 611 and 621.
As shown in FIG. 12 (A), the adapter 611 of the driving side mold 61 includes a disc portion 61D formed in a disc shape, an engagement disc 612 fixed to the center portion of the disc portion 61D, and And a guide rod 61G.
An insertion hole 61F that is continuous with the large-diameter hole 61B is formed on the outer periphery of the disc part 61D.
The space between the central portion of the disc portion 61D and the outer peripheral portion where the insertion hole 61F is formed is thin. On the outer periphery of the disc portion 61D, a metal mold hanging bracket 63 is provided.
The guide rod 61G is inserted through the work mounting hole 61A of the mold body 610.

As shown in FIG. 12B, the adapter 621 of the driven side mold 62 includes a disk part 62D formed in a disk shape, an engagement disk 622 fixed to the center part of the disk part 62D, and And a guide rod 62G.
An insertion hole 62F that is continuous with the large-diameter hole 62B is formed in the outer peripheral portion of the disc part 62D. The space between the center portion of the disc portion 62D and the outer peripheral portion where the insertion hole 62F is formed is thin. A metal hanging bracket 63 is provided on the outer periphery of the disc portion 62D.
The guide rod 62G is fitted into the work mounting hole 62A of the mold body 620.
As shown in FIG. 12C, the engaging disk 622 is disposed at the center of the front surface of the adapter 611.
The adapter 621 has the same structure as the adapter 611.

[Mold setting method]
Next, a method for installing the drive side mold 61 and the driven side mold 62 in the shaft enlargement processing apparatus 1 using the mold installation jig 10 of the present embodiment will be described.
First, the adapter 611 is coupled to the mold body 610 to form the drive side mold 61. Similarly, the adapter 621 is coupled to the mold body 620 to form the driven side mold 62.
Thereafter, the mold installation jig 10 is installed on the base member 80 of the jig installation member 8, the drive side mold 61 is installed on the first holding member 81, and the driven side mold 62 is installed on the second holding member 82. Install. A crane or the like may be used for these operations.
In these operations, the pantograph mechanism 15 is moved so that the first mold engaging portion 71 is brought close to the driving side mold 61, and the driving side die 61 is set in the first mold engaging portion 71. Then, the driven mold 62 is set on the second mold engaging portion 72.

Then, the mold installation jig 10 is operated.
The handle is connected to the end of the universal joint 16, and the male screw portion 21 is rotated in one direction via the universal joint 16.
Then, the first block 191 and the second block 192 of the pantograph mechanism 15 are separated from each other, and the first mold engaging portion is interposed via the first link 181, the second link 182, the third link 183, and the fourth link 184. 71 and the second mold engaging portion 72 are drawn from the end of the frame 13 toward the center. At this time, the driving side mold 61 and the driven side mold 62 slide on the mold receiving member 70F, respectively.

Here, when the driving side mold 61 is heavier than the driven side mold 62, the first mold engaging portion 71 engaged with the driving side die 61 is brought into a stationary state, and the second mold engaging portion 72 is brought into a stationary state. Only the engaged driven mold 62 is drawn toward the center of the base 310.
When the second plate 720 constituting the second mold engaging portion 72 comes into contact with the second stopper, the movement of the second mold engaging portion 72 is restricted and engaged with the first mold engaging portion 71. The drive-side mold 61 is pulled toward the center of the base 310. When the first plate 710 constituting the first mold engaging portion 71 comes into contact with the first stopper, the driving side mold 61 and the driven side mold 62 are installed in the mold installation jig 10. Become.

The two bars 12 of the shaft enlargement processing apparatus 1 are installed on the outer peripheral portion R of the spindle 42 by using only a mold installation jig 10 in which the driving mold 61 and the driven mold 62 are installed, using a crane or the like. .
Here, when the two bars 12 come into contact with the outer peripheral portion R of the spindle 42, the shaft core P1 of the work mounting holes 61A and 62A of the driving side mold 61 and the driven side mold 62, and the driving side mold 61, The axis setting position P0 of the workpiece mounting holes 61A and 62A with the driven side mold 62 coincides. Even if the installation posture of the mold installation jig 10 on the spindle 42 is deviated and only one bar 12 contacts the outer peripheral portion R of the spindle 42, the drive side mold 61 and the driven side Due to the weight of the mold 62, the remaining bar 12 comes into contact with the outer peripheral portion R of the spindle 42, and the driving side mold 61 and the driven side mold 62 are positioned.

Thereafter, the male screw portion 21 is rotated by the handle in the direction opposite to the previous direction via the universal joint 16.
Then, the first block 191 and the second block 192 of the pantograph mechanism 15 are brought close to each other, and the first mold engaging portion is interposed via the first link 181, the second link 182, the third link 183, and the fourth link 184. 71 and the 2nd metal mold | die engaging part 72 are each extruded toward the edge part from the center part of the flame | frame 13. As shown in FIG.
The drive side mold 61 engaged with the first mold engagement portion 71 is inserted into the spindle 42 of the drive side holder unit 4 while sliding on the mold receiving member 70F. Then, the drive side mold 61 is attached to the spindle 42. Further, the adapter 611 is removed from the mold body 610.
Similarly, the driven mold 62 engaged with the second mold engaging portion 72 by the pantograph mechanism 15 slides on the mold receiving member 70F, while the inside of the spindle 42 of the driven holder unit 5 is inside. Inserted into. Then, the driven mold 62 is attached to the spindle 42. Further, the adapter 621 is removed from the mold body 620.
When the driving side mold 61 and the driven side mold 62 are respectively attached to the pair of spindles 42, the mold installation jig 10 is removed from the spindle 42.
Then, the work is mounted in the work mounting hole 61A of the driving side mold 61 and the work mounting hole 62A of the driven side mold 62, and the driving side holder unit 4 and the driven side holder unit 5 are operated. Thereby, a shaft enlargement process is given to a workpiece | work.

[Effect of the embodiment]
Therefore, in this embodiment, the following effects can be achieved.
(1) A mold installation jig 10 including a mold holding unit 11 that holds the driving side mold 61 and the driven side mold 62 and two bars 12 provided on the mold holding unit 11. The two bars 12 are arranged on a circle centered on the axial center setting positions of the work mounting holes 61A and 62A when the driving side mold 61 and the driven side mold 62 are installed in the shaft enlargement processing apparatus 1. The bar 12 is positioned on the virtual circle Q centered on the axis of the workpiece mounting holes 61A and 62A. For this reason, since the driving side mold 61 and the driven side mold 62 can be transported to the shaft enlargement processing apparatus 1 by the mold installation jig 10, the transporting work is facilitated. In addition, the drive-side mold 61 and the driven-side mold 62 are installed in the shaft enlargement processing apparatus 1 by bringing the two bars 12 into contact with the reference portion S, so that the drive-side mold 61 and the driven-side mold are brought into contact with each other. Since the positioning to the shaft enlargement processing apparatus 1 can be performed, the installation work can be easily performed.

(2) The mold holding unit 11, the frame 13, the first mold engaging unit 71 that engages the driving side mold 61, and the second mold engaging unit 72 that engages the driven side mold 62. Since the first mold engaging portion 71 and the second mold engaging portion 72 are provided with a retracting mechanism 15A that retracts toward the center portion of the frame 13, by retracting to the center portion of the frame 13 by the retracting mechanism 15A, The driving side mold 61 and the driven side mold 62 can be easily held on the mold installation jig 10.

(3) Since the mold installation jig 10 includes the extrusion mechanism 15B that pushes the first mold engagement portion 71 and the second mold engagement portion 72 toward the end of the frame 13, the drive side By pushing the mold 61 and the driven side mold 62 toward the end of the frame 13, the drive side mold 61 and the driven side mold 62 can be easily installed in the shaft enlargement processing apparatus 1.

(4) The first mold engaging portion 71 and the second mold engaging portion 72 are respectively in contact with each other when the driving side mold 61 and the driven side mold 62 are retracted by the retracting mechanism 15A. 701 and the second abutment portion 702 that abuts when the driving side mold 61 and the driven side mold 62 are pushed out by the push-out mechanism 15B, so that the driving side mold 61 and the driven side mold 62 are securely connected. You can make a round trip.

(5) The first mold engaging portion 71 and the second mold engaging portion 72 are arranged with the center portion of the frame 13 interposed therebetween, and one end portion of each of the first mold engaging portions 71 is rotatable. The first link 181 and the second link 182 that are connected, the third link 183 and the fourth link 184, each of which is rotatably connected to the second mold engaging portion 72, and the first link 181. A first block 191 that is rotatably connected to the other end and the other end of the third link 183, and a second block 182 that is rotatably connected to the other end of the fourth link 184. The pantograph mechanism 15 is configured to include the connected second block 192 and the proximity separation mechanism 20 that brings the first block 191 and the second block 192 close to each other. For this reason, the pull-in mechanism 15A and the push-out mechanism 15B are constituted by the pantograph mechanism 15 having the first link 181 to the fourth link 184, so that the structure of the mold installation jig 10 can be simplified.

(6) Since the proximity / separation mechanism 20 includes the male screw portion 21 that is screwed into the first block 191 and the second block 192, the amount of rotation of the male screw portion 21 is the first block 191 and the second block 192. Therefore, the distance between the first mold engaging portion 71 and the second mold engaging portion 72 can be easily controlled.

(7) Since the handle is connected to the end of the male screw portion 21 via the universal joint 16, even if the long male screw portion 21 is arranged vertically, the position of the handle can be determined by using the universal joint 16. Can be adjusted.

(8) The pantograph mechanism 15 is provided on the frame 13 so as to be movable in parallel with the two bars 12, and the frame 13 is provided with a first stopper for restricting the movement of the first mold engaging portion 71, and a second mold engagement. Since the second stopper for restricting the movement of the joint portion 72 is provided, even if there is a difference in weight or the like between the driving side mold 61 and the driven side mold 62, the driving side mold 61 and the driven side mold 62 are provided. Can be reliably pulled into the center side of the frame 13.

(9) Since the reference portion S is the outer peripheral portion of the spindle 42 mounted in advance on the shaft enlargement processing device 1, installation work of the driving side mold 61 and the driven side die 62 is performed in the shaft enlargement processing device 1. It can be done easily.

(10) A columnar main body 120 provided with the bar 12 on the wall portions 131 and 132 so as to be axially movable, a fixing ring 122 fixed to the center side of the columnar main body 120, a fixing ring 122 and a wall portion. Since the spring 123 provided between 131 and 132 is provided, it is possible to prevent the bar 12 from being damaged when one end of the bar 12 collides with the shaft enlargement processing device 1 or other parts. .

(11) Since the pantograph mechanism 15 can be slid in a direction parallel to the axial direction of the bar 12, the mounting operation of the driving mold 61 to the first mold engaging portion 71 and the second operation of the driven mold 62 are performed. The mounting operation to the mold engaging portion 72 can be easily performed.

[Modification]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, both the driving side mold 61 and the driven side mold 62 are held by the mold holding unit 11. However, in the present invention, the driving side mold 61 and the driven side mold 62 are configured. It is good also as a structure which hold | maintains any one of these.
In the present invention, the number of bars 12 is not limited to two, and may be three or more. However, if there are two, it is easier to position the driving side mold 61 and the driven side mold 62 than in the case of three or more.

Further, in the present invention, the retracting mechanism 15A and the pushing mechanism 15B are configured by the pantograph mechanism 15, but in the present invention, the first mold engaging portion 71 and the second mold engaging portion 72 are arranged in the axial direction of the bar 12. The specific configuration is not limited as long as it is advanced and retracted along, for example, a ball screw shaft that advances and retracts the first mold engaging part 71 and the second mold engaging part 72, respectively. The motor may be configured to rotate a ball screw shaft.
In the present invention, it is not always necessary to provide the extrusion mechanism 15B. In this case, an operator may manually press the drive side mold 61 and the driven side mold 62 installed in the mold installation jig 10 toward the spindle 42.

In the embodiment, the reference portion S is the outer peripheral portion R of the spindle 42. However, in the present invention, a portion preset in the shaft enlargement processing device 1 may be used as the reference portion S.
Furthermore, the processing machine to which the present invention is applied is not limited to the shaft enlargement processing apparatus 1, and can be applied to, for example, a machine tool for grinding a workpiece with a tool provided on a spindle.

DESCRIPTION OF SYMBOLS 1 ... Shaft enlargement processing apparatus (processing machine), 10 ... Die installation jig, 11 ... Mold holding part, 12 ... Bar, 13 ... Frame, 131, 132 ... Wall part, 15 ... Pantograph mechanism, 15A ... Retraction Mechanism, 15B ... Extrusion mechanism, 16 ... Universal joint, 181 ... First link, 182 ... Second link, 183 ... Third link, 184 ... Fourth link, 191 ... First block, 192 ... Second block, 2 ... Device frame, 20 ... Proximity separation mechanism, 20A ... Male screw part, 21 ... Male screw part, 4 ... Drive side holder unit, 41 ... Supporting outer cylinder, 41A ... Shaft, 42 ... Spindle, 61 ... Drive side mold, 610, 620 ... Mold body, 611, 621 ... Adapter, 61A, 62A ... Work mounting hole, 62 ... Driven side mold, 621 ... Adapter, 622 ... Disc for engagement,
701: First contact portion, 702: Second contact portion, 71: First mold engagement portion, 72: Second mold engagement portion, P0: Shaft core setting position, P1: Shaft core, P2: Axis core, Q ... virtual circle, R ... outer periphery, S ... reference part

Claims (9)

A jig for installing a mold having a workpiece mounting hole in a processing machine,
A mold holding unit for holding the mold, and a plurality of bars provided in the mold holding unit and arranged in parallel with each other,
The mold holding part includes a frame, a mold engaging part that engages the mold, and a retracting mechanism that draws the mold engaging part toward the center of the frame,
The plurality of bars can be brought into contact with a reference portion formed on an imaginary circle centering on an axial center setting position of the work attachment hole when the mold is installed in the processing machine,
The axis of the plurality of bars is positioned on a virtual circle centered on the axis of the work attachment hole of the mold held by the mold holding part, respectively. Ingredients. In the jig for installing a mold according to claim 1 ,
A mold installation jig comprising an extrusion mechanism for extruding the mold engagement portion toward an end of the frame. In the mold installation jig according to claim 2 ,
The mold engaging portion includes a first abutting portion that abuts when the die is pulled by the retracting mechanism, and a second abutting portion that abuts when the die is pushed out by the pushing mechanism. A tool for installing a mold, characterized by comprising: In the jig installation jig according to claim 2 or claim 3 ,
The mold engaging part has a first mold engaging part and a second mold engaging part arranged in a pair across the center part of the frame,
The pull-in mechanism and the push-out mechanism are respectively provided with a first link and a second link whose one ends are rotatably connected to the first mold engaging portion, and one ends at the second mold engaging portion, respectively. A third link and a fourth link that are rotatably connected, a first block that is rotatably connected to the other end of the first link and the other end of the third link, and the first link A second block rotatably connected to the other end of the two links and the other end of the fourth link; and a proximity separation mechanism for separating the first block and the second block from each other. A mold installation jig characterized by having a pantograph mechanism. In the jig for jig installation according to claim 4 ,
The approaching / separating mechanism includes a female screw part formed in each of the first block and the second block, and a male screw part screwed into the female screw part. In the jig installation jig according to claim 5 ,
A tool for installing a die, wherein a handle is connected to an end of the male screw portion via a universal joint. In the jig for installing a mold according to any one of claims 4 to 6 ,
The pantograph mechanism is provided on the frame so as to be movable in parallel with the plurality of bars, and the frame restricts movement of the first mold engaging portion along the axial direction of the plurality of bars. 1 A stopper and the 2nd stopper which controls the movement along the axial direction of the said some bar of the said 2nd metal mold | engagement part are each provided. The jig | tool for metal mold | positioning characteristics characterized by the above-mentioned. In the jig for installing a mold according to any one of claims 1 to 7 ,
The processing machine is a shaft enlargement processing device for forming a collar having a diameter expanded in the middle of a rod-shaped metal workpiece,
The mold setting jig, wherein the reference portion is an outer peripheral portion of a spindle on which the mold is mounted. A mold holding part for holding a mold in which a work attachment hole is formed, and a plurality of bars provided in the mold holding part and arranged in parallel to each other, the mold holding part includes a frame, A mold engaging portion that engages the mold, and a retracting mechanism that draws the mold engaging portion toward the center of the frame, and the shaft cores of the plurality of bars serve as the mold holding portion. A method of installing a mold on a processing machine using a mold installation jig disposed on a virtual circle centered on an axis of a workpiece mounting hole of the held mold,
The mold engaging part engaged with the mold is pulled toward the center of the frame, and the mold setting jig holding the mold by the mold holding part is conveyed to the processing machine. Then, the plurality of bars are brought into contact with a reference portion formed in advance on an imaginary circle centering on the axial center setting position of the workpiece attachment hole when the mold is installed in the processing machine. Characteristic mold installation method.

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