JPH07246532A - Metal mold supporting method in metal mold cutting work and support jig employed in the method - Google Patents

Abstract

PURPOSE:To enable the other surface to be continuously cut without doing a preparatory plane for a metal mold once more over a surface plate after both the installation surface and one forming surface of the metal mold have been cut by supporting the metal mold over the surface plate in such a way that the installation surface of the metal mold is vertical to the upper surface of the surface plate. CONSTITUTION:A metal mold W is rested over a surface plate 10 in such a way that the metal mold is interposed between support jigs 20 and 20. Both the forming surface W2 of the metal mold W and its installation surface W1 to a bolster are to be vertical to the upper surface of the surface plate 10 with its resting attitude adjusted. For the aforesaid adjustment, tilt adjusting blocks 4P are placed under the metal mold W. Subsequently, the metal mold W to be cut is supported with respect to the surface plate 10 by holding the right and left side surfaces of the metal mold to be cut, with specified force applied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supporting a mold in cutting a mold and a supporting jig suitable for use in the method.

[0002]

2. Description of the Related Art Conventionally, when cutting a die, as shown in FIG. 11, first, as shown in FIG. 11, a mounting surface W ₁ of a casting material (die) W on a bolster is placed on the upper side. Place it on the appropriate position of the casting material W and screw jack 1
1, after using the spacer 12 etc. to lift and level out,
The U-shaped clamp 13, the step clamp 14, the step block 15 and the like are used to fasten and fix the surface plate 10 by bolts 16.

Then, the general-purpose surface plate 10 is fixed to a milling machine so that the mounting surface W ₁ is cut.
That is, the general-purpose surface plate 10 is used as an external setup jig in order to increase the operation rate of the expensive milling machine. In order to perform this external setup work, the mold is fixed as described above, but the molding surface of the mold, that is, the mating surfaces of the upper and lower molds, is often a curved surface. In fact, it is troublesome and time-consuming to fix the mounting surface W ₁ while keeping the mounting surface W ₁ horizontal.

[0004]

However, in order to fix the mounting surface W ₁ of the mold W horizontally as described above, the screw jack 11, the spacer 12 and the like are fixed to the mold W.
Insert it underneath and check the horizontal using a toe-scan, etc., then step block 15 and screw jack 11
The U-shaped clamp 13 and the step clamp 14 are held horizontally by using the clamping bolts 16 and the mold is pressed and fixed from the upper side to the lower side by using the tightening bolts 16. At this time, it is appropriate to press the step clamp 14 or the like. Place the casting material 2
It is necessary to select and fix it to 0. However, this suitable place is not easy and often suffers. That is, in many cases, there are protrusions, recesses, and the like other than the mounting surface W ₁ and there are few places that can withstand tightening.

Further, when there is no such a portion, it is troublesome because it is necessary to attach a protrusion for that purpose to the casting material.

Further, when the mounting surface W ₁ of the mold W is machined and then the molding surface on the opposite side is machined, the mold W is turned over by 180 ° and turned over to be fixed on the surface plate 10 again. Must. In this way, the mounting surface W _{1 of the} mold W is
In the case of cutting both the molding surface and the molding surface, two set-up operations are required, work efficiency is extremely poor, and since the horizontal surface is processed, chips are also poorly discharged.

In view of the above-mentioned conventional problems, an object of the present invention is that the supporting position of the mold is not restricted and the time required for supporting the mold can be shortened. A method of supporting a mold in a mold cutting process, which can greatly improve work efficiency by fixing the mold in one setup when cutting both the molding surface of the mold and the mounting surface to the bolster. It is to provide a supporting jig used for it.

[0008]

In order to achieve the above object, the die supporting method of the present invention is to place a die to be cut on a surface plate and subject the die to be cut to a cutting process. The mounting posture of the die to be cut is adjusted so that the mounting surface of the die is perpendicular to the upper surface of the surface plate, and then the plurality of support jigs held on the surface plate are used to form the object to be cut. It is characterized in that the left and right side surfaces of the cutting die are pressed and held with a predetermined force to support the die to be cut with respect to the surface plate.

Further, the support jig according to the present invention has a main body member having at least a base portion that can be fixed on a surface plate and an upright portion that is erected on the base portion, and the main body member. A moving member that is positionally adjustable in a plane substantially orthogonal to the bottom surface of the base, and a screw hole that is provided on the moving member and extends along an axis that is substantially parallel to the bottom surface of the base. And a male screw member screwed to the female screw member and having a pusher attached to the tip thereof.

[0010]

According to the present invention, the die is attached to the bolster by supporting the die so that the attachment surface of the die to the bolster is perpendicular to the upper surface of the die. When cutting both the molding surface and the molding surface, after cutting one of those surfaces, the other surface can be continuously cut without re-preparing the mold on the surface plate. As much as possible, greatly improve work efficiency.

The body member of the support jig is provided with a movable member having a pusher so that the position of the movable member can be adjusted according to the supporting position of the mold, and the supporting work of the mold is performed. To be extremely easy.

Further, by providing the elastic member capable of urging the female screw member in the direction of its tip, the impact at the time of cutting the die is mitigated.

Further, by rotating the male screw member by the tightening device having the hydraulic pressure applying mechanism, the die can be supported strongly and easily.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 7 are views for explaining the first embodiment of the present invention.

In FIG. 1, reference numeral 10 is a surface plate, on the upper surface of which T grooves 10A, 10A and a plurality of key grooves 10B are formed as shown in FIG. W is the mold to be cut, 2
Reference numerals 0 and 20 denote a pair of left and right support jigs. Further, reference numeral 11 in FIG. 3 denotes a key fitted and fixed in the key groove 10B.

In the supporting jig 20, reference numeral 21 is a base portion of a substantially rectangular flat surface having a flat bottom surface which is in contact with the upper surface of the surface plate 10, and the bottom surface thereof has T grooves 10A, 10A of the surface plate 10.
The sliders 22, 22 are slidably guided inside and fixed. Further, the base portion 21 is formed with a key groove 21A into which the key 11 is fitted. Reference numeral 23 denotes a standing portion that is erected at a right angle to the front side of the base portion 21, and a reinforcing rib is provided between the side edge of the standing portion 23 and the rear side edge of the base portion 21. 24 is integrally formed. Thus, the base portion 21, the upright portions 23, and the reinforcing ribs 24 form the main body member of the support jig 20.

On the front surface of the standing portion 23, a plurality of T-shaped grooves 23A extending in the horizontal direction are formed side by side in the vertical direction. Also, the upper and lower guide grooves 23A, 23 adjacent to each other
A hole 23B extending in the horizontal direction is formed through the intermediate position of A. Further, a groove 23C and a hole 23D for passing the upper and lower tie bolts 25, 25 connecting the left and right support jigs 20, 20 are formed on the upper and lower portions of the standing portion 23. Furthermore, hooks 26, 26 for lifting are provided on the side surface of the standing portion 23 (see FIG. 2).
And the positioning bar 2 between the left and right support jigs 20, 20.
A hook 28 having an L-shaped cross section for supporting 7 is attached. The hooks 28 are appropriately attached depending on the type of the mold W. For example, two hooks 28 are attached as shown in FIGS. 1 and 3, or as shown by the solid line and the two-dot chain line in FIGS. 2 and 4. 4 can be attached to. The bar 27 is shown in FIG.
As shown in FIG. 2, both ends supported by the hook 28 have a rectangular cross section, and the middle part has a convex cross section.

In FIGS. 6 and 7, reference numeral 41 denotes a moving body (moving member), which is a cylindrical retainer portion 41A through which a bolt (male screw member) 42 penetrates, and the retainer portion 41.
A flat rectangular frame-shaped flange portion 41B located on one end side of A
And a housing space for the nut (female screw member) 43 and the disc springs 44, 44 is formed inside the flange portion 41B. Further, through-holes 41C for the bolts 45 are formed in each of the four corners of the flange portion 41B, and the bolts 45 allow the flange portion 41B to pass through.
On the back side (right side in FIG. 7) of the flat circular slider 4
6 is attached. The four sliders 46 in total are slidably fitted in the upper and lower guide grooves 23A, 23A which are adjacent to each other, so that the moving body 4 can be moved with respect to the standing portion 23.
Hold 1 movably. The position of the moving body 41 is fixed by tightening the bolt 45.

The nut 43 has a flat ring-shaped flange portion 43A formed on one end side, and the outer peripheral surface on the other end side has two opposing flat surfaces 43B and 43B (see FIG. 6). It is locked inside 23B. The axis of the nut 43 is parallel to the bottom surface of the base portion 21, and more preferably, the axis is inclined backward so as to be raised by 2 to 3 °, that is, rightward in FIG. The disc springs 44, 44 are interposed between the flange portion 43A of the nut 43 and the facing surface of the upright portion 23. The bolt 42 is screwed into a nut 43, a pusher 48 is attached to the tip thereof, and a rotary operation portion is formed at the rear end thereof. In the case of this example, a wrench hole 42A that fits with a hexagon wrench is formed in the operation portion.

The pusher 48 has a conical tip end,
As a material, for example, steel such as SKS3 is used, and the tip portion is quenched. Thus, when the presser 48 is pressed with a pressure of several tons as described later, the presser 48 can slightly bite into the side surface of the mold W of the casting material and completely prevent its vertical movement. obtain. If the mold W is made of a soft material, it is preferable to round the tip of the presser 48.

Further, each of the two disc springs 44, 44 can generate a reaction force of about 1.5 tons, and in this example, a reaction force of about 3 tons can be generated.

Next, the operation will be described.

First, depending on the length of the mold W, the facing gap between the left and right support jigs 20, 20 on the surface plate 10 is adjusted, and the key 11 is fitted into the key grooves 10B, 21A. , Base portions 21, 21 of those supporting jigs 20, 20
Is fixed on the surface plate 10. As shown in FIG. 1, the facing intervals of the upright portions 23, 23 of the supporting jigs 20, 20 are set to a size such that they can face the side surface of the mold W at a predetermined interval.

After that, the mold W is placed on the surface plate 10 so as to be positioned between the support jigs 20, 20. Then, the mounting posture is adjusted so that the molding surface W ₂ of the mold W and the mounting surface W ₁ on the bolster are perpendicular to the upper surface of the surface plate 10, as shown in FIG. 2. . For the adjustment, a tilt adjustment block 49 (see FIGS. 1 and 2) is placed under the mold W. Moreover, when the adjustment is performed, the support jig 20,
Positioning bars 27, 27 are bridged between the 20 and, for example, the position and posture of the mold W are determined by contacting the bars 27, 27.

Before and after placing the mold W on the surface plate 10, the tie bolts 2 are provided between the groove portions 23C and 23C of the supporting jigs 20 and 20 and between the hole portions 23D and 23D.
5, 25 are bridged, and nuts 50 are screwed to the ends of the tie bolts 25, 25 to regulate the facing distance between the support jigs 20, 20. In addition, the support jig 20 holds a predetermined number of moving bodies 41 in advance at a height facing a side surface portion suitable for fixing the mold W.

Then, a hexagon wrench (not shown) is engaged in the hexagon wrench hole 42A at the end of the bolt 42, and the bolt 42 is rotated. Then, the bolt 42 to which the pusher 48 is attached is screw-driven and advances with an inclination of 2 to 3 °, and thus the pusher 48 contacts the side surface of the mold W. The bolt 42 can be rotated even after the abutment of the pusher 48, and the bolt 42 causes the disc spring 4 as an elastic member to rotate with this rotation.
It will move backward while bending 4,44.

A reaction force is generated in the disc spring 44 in proportion to the amount of retreat of the disc spring 44, and the retreat of the bolt 42 causes the bolt 42 and the presser 48 to have a large set pressing force (3 tons in this embodiment) and the die. Press the side of W to support it. And
As described above, when the bolt 42 has an axis line which is inclined upward by 2 to 3 ° coinciding with the axis line of the nut 43, it is more effective in preventing the mold W from rising.

By performing the above-described tightening operation by the plurality of supporting jigs 20 in a well-balanced manner, the mold W is securely fixed.

After that, the surface plate 10 on which the mold W is reliably supported is fixed to the milling machine, and the mounting surface W ₁ and the molding surface W ₂ of the mold W are cut by the milling machine. At that time, after cutting _one of the surfaces W ₁ and W ₂ of the mold W, the other surface can be continuously cut without re-preparing the mold W on the surface plate 10. It is possible and its work efficiency is extremely high.

During the cutting process, the blade of the face mill impacts the ribs formed on the mold W,
When a force exceeding a predetermined value acts on the mold W, the nut 43 and the bolt 42, which are supported at a predetermined set pressure by the reaction force of the disc springs 44, 44, are integrated into a substantially horizontal direction. Since it moves only to, the above-mentioned shocking abutment is alleviated without lowering the processing accuracy.

It is not necessary that all of the plurality of support jigs 20 have movable parts such as the bolts 42. For example, one of the support jigs 20 and 20 in the facing arrangement relationship may be the bolt 42.
It may be a mere pressure receiving jig having no movable parts such as.

8 to 10 are views for explaining the second embodiment of the present invention.

In the present embodiment, the tightening device 36 is connected to the rear end of the bolt 42, and the pusher 48 is attached to the tip of the pressing rod 36B penetrating the inside of the bolt 42.

That is, the rear end of the bolt 42 is fitted in the cylinder member 36D and fixed by the bolt 36E (see FIG. 10). An extension sleeve 36F is provided at the end of the cylinder member 36D with a bolt 3
Extension sleeve 36 fixed with 6G
A female screw member 36H is non-rotatably fitted to the end portion of F. A male screw member 36J having a plunger 36I provided at one end is screwed into the female screw member 36H, and the male screw member 3
The other end of 6J is connected to the clamp sleeve 36L by a set screw 36K. Clamp sleeve 3
A transmission member 36M having a hexagonal hole is press-fitted at the rear end of 6L, and a notch 36LA is formed at the front end. Incidentally, 36N is a dog clutch provided so as to be movable only in the axial direction of the male screw member 36J, and is a female screw member 36H.
It is configured to mesh with the teeth of.

Further, a piston member 36P is slidably mounted in the hollow portion of the cylinder member 36D, and the above-mentioned plunger 36I is provided in a pressure chamber 36Q defined by the piston member 36P and the cylinder member 36D. It is supposed to be able to penetrate. 36R is a packing for sealing the pressure chamber 36Q, 36S is a disc spring provided between the male screw member 36A and the piston member 36P, and 36T is provided between the pressing rod 36B and the piston member 36P. It is a compression spring.

Reference numeral 36U is a joint collar fitted to the cylinder member 36D by the key 36V so as to be movable only in the axial direction, and is for switching between screw drive and hydraulic drive of the pusher 36C. . Furthermore, 3
6W is a handle for being inserted into the hexagonal hole of the transmission member 36M and rotating it.

In the present embodiment having the above-mentioned structure, when tightening the bolt 42, the tightening device 36 is operated as follows.

First, the joint collar 3 of the tightening device 36.
6U is slid to the side of the clamp sleeve 36L, and the handle 36W is rotated while the key 36V and the notch 30LA of the clamp sleeve 36L are engaged with each other. Then, the clamp sleeve 36H and the cylinder member 36D to which the bolt 42 is fixedly mounted rotate together, and the presser 36C is rotated.
The pressing rod 36B mounted with is driven by a screw together with the bolt 42 and advances with an inclination of 2 to 3 °, and thus the pressing member 36C abuts the side surface of the mold W. The bolt 42 can still rotate a little together with the cylinder member 36D even after the pusher 36C abuts, and at this time, the pressing rod 36B abuts the piston member 36P while bending the compression spring 36T.

In this state, the joint collar 36U is returned to the position shown in the drawing to release its engagement with the clamp sleeve 36H, and the handle 36W is lightly shocked to release the engagement of the dog clutch 36N. Rotate the handle 36W. Then, the cylinder member 36D
The bolt 42 does not rotate, and the male screw member 36J connected to the clamp sleeve 36H does not rotate.
6H, the plunger 36I is moved forward from the relationship with the pressure chamber 3
Intrude into 6Q. The pressure of the pressure chamber 36Q rises due to the intrusion of the plunger 36I, and the piston 36P slides, whereby the pressing rod 36B and the pressing member 36C are hydraulically driven, and the side surface of the mold W is pressed by a large pressing force to press it. Fix it. Further, as described above, when the tightening device 36 has an axis line that is inclined upward by 2 to 3 ° that coincides with the axis line of the nut 43, it is more effective in preventing the mold W from rising.

In this way, by performing the above-mentioned tightening operation of the plurality of supporting jigs 20 in a well-balanced manner, the mold W
Is securely fixed. It should be noted that all of the plurality of supporting jigs 20 may not be provided with the movable tightening device 36. For example, in the supporting jigs 20 and 20 in the facing arrangement relationship, one of them is a movable part of the tightening device 36 or the like. Needless to say, it may be a simple pressure receiving jig that does not include the above.

[0042]

As is apparent from the above description, according to the supporting method of the present invention, the die is supported on the surface plate so that the mounting surface of the die is perpendicular to the upper surface of the surface plate. Therefore, after cutting one of the mold mounting surface and the molding surface, the other surface can be continuously cut without re-setting the mold on the surface plate, which is unmanned. When working or the like, the working efficiency is significantly improved, and the chips can be dropped, and the dischargeability thereof can also be improved.

Further, according to the supporting jig of the present invention, by adjusting the position of the moving member in accordance with the supporting position of the mold, the supporting position of the mold is not restricted and the mold is moved. The supporting work can be made extremely easy, and the time required for the supporting work can be shortened. Moreover, a sufficient tightening force can be obtained, and a large number of standard jigs can be prepared, which facilitates jig management.

[Brief description of drawings]

FIG. 1 is a side view of a support jig according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a perspective view of the support jig shown in FIG. 1. FIG.

FIG. 4 is a front view of the main body of the support jig shown in FIG.

5 is a cross-sectional view of the main body of the support jig shown in FIG.

6 is a front view of the moving body shown in FIG. 1. FIG.

7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is a perspective view of a main part of a supporting jig according to a second embodiment of the present invention.

9 is a cross-sectional view of the tightening device shown in FIG.

10 is a cross-sectional view taken along line XX of FIG.

FIG. 11 is a perspective view for explaining a conventional supporting jig.

[Explanation of symbols]

10 Surface plate 20 Support jig 21 Base part 23 Standing part 41 Moving body (moving member) 42 Bolt (male screw member) 43 Nut (female screw member) 44 Disc spring (elastic member) 48 Pusher W Mold W ₁ Bolster Mounting surface W ₂ molding surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuru Hashimoto 19-1 Yamami Kogyo Co., Ltd., Fuji City, Shizuoka Prefecture (72) Inventor Masahiro Maekawa 19-1 Yamami Kogyo Co., Ltd., Fuji City, Shizuoka Prefecture

Claims (4)

[Claims] 1. A die to be cut is placed on a surface plate, and the die to be cut is such that a mounting surface of the die to be cut is perpendicular to an upper surface of the surface plate. After adjusting the placement posture of the die, the left and right side surfaces of the die to be cut are pressed and held with a predetermined force by using a plurality of supporting jigs held on the surface plate to cut the die. A method for supporting a die in a die cutting process, which comprises supporting the die on the surface plate. 2. A main body member having at least a base portion that can be fixed on a surface plate and an upright portion that is erected on the base portion, an upright portion of the main body member, and a bottom surface of the base portion. A moving member whose position is adjustable in a plane orthogonal to each other, a female screw member provided on the moving member and having a screw hole extending along an axis substantially parallel to the bottom surface of the base portion, and the female screw. A supporting jig, comprising: a male screw member screwed to the member and having a pusher attached to the tip thereof. 3. The moving member is provided with the female screw member so as to be movable along the extending direction of the screw hole, and the moving member is provided with an elastic member capable of urging the female screw member in the tip direction thereof. The support jig according to claim 2, wherein the support jig is provided. 4. A pressing rod provided through the male screw member and having a pusher attached to the tip thereof, and a tightening device having a hydraulic pressure applying mechanism for applying hydraulic pressure to the pressing rod in the tip direction thereof. The support jig according to claim 2, wherein