JP3279906B2 - Die setting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die set device for presses, and more particularly to a die set device capable of performing precise processing using a C-type frame press.

[0002]

2. Description of the Related Art C type frame press is
A press machine that supports a bolster (table) for fixing a lower mold to the lower arm of a mold frame and a ram (slide) for fixing an upper mold that moves forward and backward with respect to this bolster on the upper arm. The reaction force of the processing is received by the upper arm and the lower arm of the C-shaped frame. This C-type frame press is characterized in that workability is better than that of a straight side frame press, but on the other hand, since the frame is C-type, the frame is easily deformed (easy to open) by a load during processing. The deformation of the C-shaped frame causes a change in the direction of the vertical movement of the ram (upper die) with respect to the bolster (lower die), so that the processing accuracy is reduced. For this reason, it has been considered difficult to use the C-type frame press for high-precision processing. In addition to the C-type frame press, there is a similar problem with a relatively inexpensive press machine in which the direction of the up / down movement of the ram with respect to the bolster changes.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a die set apparatus capable of performing precise machining even if the direction of a vertical movement of a ram with respect to a bolster is slightly changed.

[0004]

SUMMARY OF THE INVENTION A die set apparatus according to the present invention includes a lower mold support fixed to a bolster side; a lower mold support supported by the lower mold support via a guide mechanism so as to be capable of moving toward and away from the lower mold. In a die set device having an upper mold support that receives a moving force toward the support, in the upper end of the upper mold support, one of a convex spherical washer and a concave spherical washer that comes into contact with a part of a spherical surface is provided. And fixing the other of the convex spherical washer and the concave spherical washer to a ram side member fixed to the ram , and
Slide in the direction perpendicular to the ram up and down direction
The feature is that it is possible. According to this die set device, even if the change in the elevating movement of the ram is slightly changed, the spherical washer absorbs the change in the direction and maintains the linear movement of the upper die support relative to the lower die support. Therefore, high-precision processing can be performed.

[0005]

FIG. 4 and FIG. 5 show an example of a C-type frame press. The C-shaped frame 11 includes the upper arm 1
2 and a lower arm 13.
Is fixed, and the upper arm 12 supports the ram 15.
The ram 15 reciprocates vertically with respect to the bolster 14 by a crank mechanism, for example. Reference numeral 16 denotes a tie rod that connects the upper arm 12 and the lower arm 13 to each other.

A die setting apparatus 20 according to the present invention is inserted between the bolster 14 and the ram 15, and an embodiment thereof is shown in FIGS. The die set device 20 includes a lower mold support 2 fixed on the lower arm 13.
1, and the lower die support 21 is provided with a lower die fixing surface 22 thereof.
Has a pair of vertical guide posts 23 on one side (open side of the C-shaped frame), and has a pair of vertical guide rails 24 on the other side. An upper mold support 26 having an upper mold support surface 25 has a bush 27 slidably fitted to the guide post 23 and a key member 28 slidably engaged with the guide rail 24. It is supported on the table 21 so as to be able to move up and down. A spring (not shown) is provided between the lower mold support 21 and the upper mold support 26 to urge the two in a direction to separate them.

A spherical washer unit 30 is provided at the upper end of the upper mold support base 26. This spherical washer unit 3
0 is a concave spherical washer 31 having a part 31s of a concave spherical surface as shown in FIG.
Convex washer 32 having a part of convex spherical surface 32s that engages with
, And the concave spherical washer 31 is fixed to the upper mold support 26. On the other hand, the upper surface of the convex spherical washer 32
The ram 15 simply contacts the lower surface of the ram-side member 33 fixed to the ram 5 and is slidable in a direction perpendicular to the direction in which the ram 15 moves up and down. The concave spherical washer 31 and the convex spherical washer 32
Free rotation along the contact surface between the spherical surfaces 31 s and 32 s can be performed, so that the upper mold support 26 can rotate with respect to the ram side member 33. In order to guarantee free movement of the upper mold support 26 with respect to the ram side member 33, the upper mold support 26 and the ram side member 33 are not in contact with each other. A suspension rod 36 that is loosely fitted in a play hole 35 formed in the ram-side member 33 is provided on the upper die support base 26. A spring receiver 37 fixed to the upper end of the suspension rod 36 and a ram-side Member 3
The contact state between the concave spherical washer 31 and the convex spherical washer 32 is maintained by the compression coil spring 38 inserted between the convex spherical washer 31 and the compression coil spring 38. The spring receiver 37 and the compression coil spring 38 are mainly unitized so that the concave spherical washer 31 and the convex spherical washer 32 are not separated when the die set device 20 is moved out of the space between the bolster 14 and the ram 15. To act. Instead of the spring receiver 37 and the compression spring 38, a concave spherical washer 31 is provided by an air cylinder device or a hydraulic cylinder device.
And the convex spherical washer 32 can be unitized so as not to be separated from each other.

The die set device 20 having the above-described configuration is inserted between the bolster 14 and the ram 15 to fix the lower mold support 21 to the bolster 14 and the ram side member 33 to the ram 15. The lower die fixing surface 22 of the lower die support 21 and the upper die support surface 25 of the upper die support 26 support a lower die and an upper die for press working, respectively. When the ram 15 is reciprocated with respect to the bolster 14 and press-worked after the above set is completed, the descending force of the ram 15 is transmitted to the concave spherical washer 31 via the convex spherical washer 32, and 26 falls. At this time, if the upper arm 12 and the lower arm 13 of the C-shaped frame 11 are slightly opened to change the direction of the up / down movement of the ram 15, the concave spherical washer 31 and the convex spherical washer 3
The second spherical engagement changes the contact position according to the change in the direction, and transmits only a force perpendicular to the bolster 14 to the upper mold support 26. At this time, the ram side member 33
When a certain force or more in the sliding direction is applied between the convex spherical washer 32 and the convex spherical washer 32, the concave spherical washer 32 slides with respect to the ram side member 33. For this reason, even if the upper arm 12 and the lower arm 13 of the C-shaped frame 11 are slightly opened, the upper die supporting base 21 makes a correct vertical movement along the guide post 23 and the guide rail 24. For this reason, even if there is a slight change in the direction in which the ram 15 moves up and down, high-precision pressing can be performed by the die set device 20.

According to the present embodiment, since the convex spherical washer 32 is slidable with respect to the ram side member 33,
5 is less likely to be exerted on the upper support 26 in a direction perpendicular to the vertical direction.

[0010]

As described above, according to the die set apparatus of the present invention, even if the moving direction of the ram that moves up and down with respect to the bolster slightly changes, the change is absorbed by the spherical washer, so that a highly accurate Press working is possible.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a die setting apparatus of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged sectional view showing a specific example of a spherical washer portion.

FIG. 4 is a front view of a C-type frame press.

FIG. 5 is a side view of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 C-type frame 12 Upper arm 13 Lower arm 14 Bolster 15 Ram 20 Die set device 21 Lower die support stand 22 Lower die fixing surface 23 Guide post 24 Guide rail 25 Upper die support surface 26 Upper die support 27 Bush 28 Key member 30 Spherical washer unit 31 Concave spherical washer 31s Concave spherical surface 32 Convex spherical washer 32s Convex spherical surface 33 Ram side member 35 Play hole 36 Suspended rod 37 Spring receiver 38 Compression coil spring

Claims (1)

(57) [Claims] 1. A lower mold support fixed to the bolster side; supported by the lower mold support via a guide mechanism so as to be movable toward and away from the lower mold support; A receiving upper mold support, wherein one of a convex spherical washer and a concave spherical washer that is in contact with a part of the spherical surface is fixed to the upper end of the upper mold support. The other of the washer and the concave spherical washer is brought into contact with a ram side member fixed to the ram , and the ram is moved up and down with respect to the ram member.
A die set device capable of sliding in a direction perpendicular to the direction .