JPS60118499A - Punch block - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] It is something that

Structure of the conventional example and its problems FIG. 1 shows a sectional view of the conventional example. In FIG. 1, the punch block is composed of three members. The die member 3 includes a blade portion 3a that becomes a die, and a punch waste falling portion 3b.
have. Punch pin sliding 2...-Near Moving guide first member 4 is punch pin cutting edge sliding guide part 4a
have. Furthermore, the punch pin sliding guide second member 5
has a punch pin sliding guide portion 6a.

These three members that make up the punch block have problems with machining accuracy such as the roundness of each hole (3a, 4a, 5+a), surface finish, coaxiality, etc., and generally the hole diameter of the die blade. Because the hole diameter is slightly larger than the hole diameter of the punch pin cutting edge sliding guide part 4b (normal radius is about 10% of the thickness of the punched object), each hole is precisely machined separately.
After alignment, the components are assembled using screws 6 and positioning pins 7. After that, punch pin 8. The punch pin return spring 14 completes the final punch block.

As described above, the conventional configuration has the disadvantage that it requires a large number of man-hours such as processing, assembly, and adjustment of the punch block body.

Purpose of the Invention The present invention solves the above-mentioned drawbacks of the conventional technology, and reduces the number of assembly steps to 9 by integrating the punch block and fitting ring-shaped members with different outer diameters into the die part and the punch pin sliding part, respectively. It is an object of the present invention to provide a punch block that reduces the number of man-hours and improves the positional accuracy of punch pins and dies.

Structure of the Invention The present invention provides a punch block main body having a guide groove through which an object to be punched is guided and conveyed, a die ring member held by the punch block main body and opposed to each other across the guide groove, and the die ring. This is a punch block equipped with at least one punch pin sliding guide ring member having an outer diameter larger than the outer diameter of the member, and by integrating the punch block body, the number of assembly steps can be reduced by 9, and the number of assembly steps can be reduced by 9. This is effective in improving the positional accuracy of the pin and die and preventing the position of the punch pin and die from shifting during long-term use.

Description of examples FIG. 2 shows an embodiment of the present invention.

JP-A-118499(2) Processing method 1 for assembling an integrated punch block according to the present invention will be sequentially explained with reference to FIG.

(1) The punch block main body 9 is produced by die casting, milling, extrusion molding, or the like.

(2) At the same time as drilling the punch waste falling guide portion 91L to the hole diameter Do, the punch pin main guide portion 9b is drilled.

The sub-guide portion 9C is also passed through and used as a pilot hole for later precision hole machining.

(3) Outer diameter Dd of the die ring member 1o, outer diameter Dp1 of the hunting bin sliding main guide ring member 11. And the outer diameter DI)2 of the sub-guide ring member 12 has a relationship of Dp2≧Dp1>Dd, and has at least two different diameters that allow drilling of each part at the same time. Drill holes from the y direction using a drill whose coaxiality is maintained with high precision.

(4) Die ring member 5 finished with high precision in terms of surface roughness, coaxiality, roundness, etc. by lathe processing, punch in the order of die 10, punch pin sliding main guide ring member 11, and sub guide ring member 12. Press fit into the block.

(5) Punch pin 13. Incorporating the punch pin return spring 14, etc., completes the punch pro-yri.

As described above, according to the present invention, the punch block can be machined in one piece, it is easy to assemble, no adjustment is required, and the position of the punch pin and die does not shift after long-term use, resulting in high reliability and low cost. You can get the ideal punch block.

Effects of the Invention The present invention provides a punch block body having a guide groove through which an object to be punched is guided and conveyed, a die ring member held by the punch block body and opposed to each other across the guide groove, and the die ring. This is a punch block equipped with at least one punch pin sliding guide ring member having an outer diameter larger than the outer diameter of the member, and by integrating the punch block body, the number of assembly steps can be reduced by 9, and further adjustment is possible. It is an ideal punch block that is highly reliable and low cost, as there is no need for this, and there is no misalignment of the pan 6 base tip and die after long-term use.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional punch block, and FIG. 2 is a sectional view of a punch block according to an embodiment of the present invention. 1...Object to be drilled, 2...Guide groove, 9
... Punch block body, 10 ... Die ring member, 11 ... Punch pin sliding main guide ring member, 12 ... Punch pin sliding sub guide ring member , 13... Punch pin, 14
...Punch pin return spring.

Claims (1)

[Claims] A punch block main body having a guide groove through which an object to be punched is guided and conveyed; a die ring member held by the punch block main body and opposed to each other across the guide groove; and a die ring member having an outer diameter larger than that of the die ring member. 1. A punch block comprising a punch pin sliding guide ring member having at least one adjustment of diameter.