JPH0241721A - Punching method by press and its apparatus - Google Patents

Abstract

PURPOSE:To prevent breaking and damaging a punch by holding a punching stock between elevating holding beds and operating the press force of the press gradually through a strong elastic material. CONSTITUTION:On the lower holding bed 1 and upper holding bed 3, semicircular recess holes 4 are provided respectively, and the punching stock A is held by both. The strong elastic material 6 is fixed by guide pins 7 between the upper holding bed 3 and the press bed 5, the punching material A is pressed by the press bed 5. At this time, the elastic material 6 is compressed gradually by the press bed 5, the punch 8 punches the punching material A. Because the punch 8 presses the elastic body 6 and punches extremely slowly, the quick force does not operate on the punch 8. By this method, the breaking and damaging of the punch 8 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and apparatus for drilling holes for mounting rods and the like for attaching bolds and other various parts. .

(Prior Art) It is necessary to make holes in the bold and other rods in order to attach various parts, and various proposals have been made.
There is a publication No. 8442 (1), but the punch for making the hole is easily broken, and the purpose of accurately making the hole at a predetermined location by preventing the bold and rod from rotating is sufficiently achieved. It has not reached that point.

(Problems to be Solved by the Invention) Conventional hole punching devices and methods hold the processed bar for punching the hole so as not to rotate, prevent the punch from breaking, and drill the hole accurately. is a major issue. .

(Means for Solving the Problem) In order to solve the problem, in this invention, the inner upper part of the clamping member that clamps the bold, bar material, etc. for which holes are to be drilled is gently (gradually pushed down) by a strong elastic body. After gradually increasing the clamping force on the bold or bar material to completely stop the movement, the punch is used to gradually punch the desired hole, preventing the punch from breaking. be.

. Hereinafter, a detailed description will be given with reference to the attached drawings. The drawings show a vertical cross section of the main parts of the press machine, and A is a bold and other hole punching material, and the lower clamping table of the press machine B. 1 is provided with a semicircular recessed hole 2 to receive and support the perforated material A, and the upper clamping table 3 is also provided with a semicircular recessed hole 4 corresponding to the semicircular recessed hole 2, and the perforated material A is held between them. 1. A strong elastic material 6 is installed between the upper clamping table 3 and the press base 5 by attaching it to the guide bin 7. 5. This strong elastic material 6 is made of rubber with strong elasticity, but the same Even with a spring with strong elasticity.

When the press platen 5 is pressed on the perforated material A in this manner, the perforated material A is first lowered gently and gradually by the elastic material 6, and a clamping force is applied to the perforated material A to clamp it, and in this state the press platen 5 is pressed. Further, pressing is applied to gradually compress the elastic material 6 and punch 8 is used to punch a hole.
The press lowers in response to the compression of the elastic material 6 to gradually open the hole, and since no sudden force is applied to the punch 8, cutting can be prevented and it can be used for a long time without damage. .

Note that this press machine B itself uses a known one, and the vertical movement of the press base S, the vertical movement of the upper clamping table 3, etc. have the configuration of a known press machine, and a special press machine is adopted. isn't it,.

(Operation and Effect) In this invention, a strong elastic material, that is, an elastic material with a strong compressive force, is inserted between the upper clamping table that holds the workpiece, that is, the hole-pierced material, and the press platen, so that the pressing force is gradually reduced. This allows the workpiece material to be punched to be held between the holes, and the hole punch can be made gradually and quietly, so excessive force is not applied to the punch suddenly, preventing breakage and damage, and also achieving the intended purpose. It is possible to reliably make a hole. .

[Brief explanation of the drawing]

The drawing shows a longitudinal sectional view of the main parts of the press. A... Hole drilling material B11 @ Press machine procedure amendment 1, case description 3, person making the amendment Relationship with the case Patent applicant Address: 1-8-1 Higashishinkoiwa, Katsushika-ku, Tokyo Name: Okinawa Kogyo Co., Ltd. 4, Agent 160 Voluntary correction sent in May 1920.

Claims (2)

[Claims] (1) In a press machine, an elastic material with strong elasticity is installed between the upper and lower clamping tables that clamp the workpiece, which is the hole-drilled material, and moves up and down by the press, and the press base plate. A pressing method using a press machine that adjusts the pressing force of a plate so that it gradually acts on the workpiece. (2) An elastic material 6 with strong elasticity (compressive force) is interposed between the press platform 5 of the press machine and the upper clamping table 3, and the press of the press platform 5 is gradually pressed between the upper clamping table 3 and the punch. 8. A press-based hole punching device configured to punch a hole in a hole punching material that is a workpiece by acting on 8.