CN203526310U

CN203526310U - Piercing die

Info

Publication number: CN203526310U
Application number: CN201320752742.0U
Authority: CN
Inventors: 谭景林; 郑克宇; 谭刚; 易建忠; 杨志成
Original assignee: CHANGSHA XIANDA INDUSTRIAL Co Ltd
Current assignee: CHANGSHA XIANDA INDUSTRIAL Co Ltd
Priority date: 2013-11-26
Filing date: 2013-11-26
Publication date: 2014-04-09
Anticipated expiration: 2023-11-26

Abstract

The utility model relates to a piercing die which comprises an upper die holder (1), a lower die holder (7), a punch (2) and a lower die (6), wherein the punch (2) is connected onto the upper die holder (1), and the lower die (6) is connected onto the lower die holder (7); a location column (9) which bulges from the cutting edge part of the punch (2) is arranged on one side of the head part of the punch (2), and a hole (8) matched with the punch is formed in the lower die (6); the bulge height of the location column (9) is greater than the thickness of a workpiece (5) to be processed. after the location column (9) is inserted into the hole (8) matched with the punch of the lower die (6), the cutting edge part of the punch (2) pierces the workpiece (5) to be processed; or a location plate (4) connected with the lower die holder (7) is arranged on the lower die (6), a guide groove for inserting the location column (9) is formed in the location plate (4); after the location column (9) is inserted into the guide groove of the location plate (4), the cutting edge part of the punch (2) pierces the workpiece (5) to be processed.

Description

A kind of punching lacks punch die

Technical field

The utility model relates to a kind of machining punching die, relates in particular to a kind of punch die that rushes breach for the edge of work.

Background technology

As shown in Figure 1, workpiece 5 need be opened at the edge of workpiece half bar hole breach 10, to thin plate or the low intensive material that easily rushes, can adopt punch machining process, and its work efficiency is higher.The processing technology of general thick blanks edge gap has two kinds: the one, use the machine-tooled methods such as milling or line cutting, and the method production cost is high, efficiency is low; The 2nd, the technique of use sheet metal blanking, but when the thickness of steel workpieces reaches 10mm when above, when rushing breach, guide pillar guide pin bushing need to be installed on mould, and drift installation auxiliary device fractures avoiding, though the method production efficiency is high, but mould is more complicated, punch die easily damages, and cost is higher, and practicality is industrially not strong.

Utility model content

Technical problem to be solved in the utility model is to provide a kind ofly has that production efficiency is high, mould is simple, the punch die of drift long service life.

Inventor finds after research: for the larger steel workpieces edge punching of thickness, punch die holds one of flimsy reason and is that drift rushes while expecting, the breach that cause is gone out is the edge at workpiece, the position of drift blanking is stressed large, the position that does not contact workpiece is stressed little, there is unbalance stress, cause generation to make the radial load of drift offset axis, thereby drift is easily damaged.

In order to solve the problems of the technologies described above, rushing that the utility model provides lacks one of punch die technical scheme: described punching lacks punch die and comprises upper bolster; Die shoe; Be connected to the drift on described upper bolster; Be connected to the counterdie on described die shoe; One side of described drift head has the locating dowel of the cutting edge portion of protruding drift, described counterdie has the hole coordinating with described drift, the protrusion height of described locating dowel is higher than the thickness of to be processed, locating dowel is inserted into behind the hole that described counterdie coordinates with drift, and the cutting edge portion of drift just rushes cuts to be processed.

In order to solve the problems of the technologies described above, rushing that the utility model provides lacks two of punch die technical scheme: described punching lacks punch die, comprises upper bolster; Die shoe; Be connected to the drift on described upper bolster; Be connected to the counterdie on described die shoe; The location-plate being connected with described die shoe; One side of described drift head has the locating dowel of the cutting edge portion of protruding drift, described counterdie has the hole coordinating with drift, described location-plate has the guide groove inserting for described locating dowel, and described locating dowel is at least inserted into after the guide groove of described location-plate, and the cutting edge portion of drift just rushes cuts to be processed.

Inventor also finds after research: in the larger steel workpieces edge punching of thickness, punch die holds one of flimsy reason and is: during drift punching material, the breach that cause is gone out is the edge at workpiece, relative breach one side of workpiece is in the effect of impulsive force, sometimes on existing, scratch phenomenon, be easier to generation and make the radial load of drift offset axis, thereby drift is easily damaged.

In order to solve the problems of the technologies described above, rushing that the utility model provides lacks one of punch die improvement technical scheme: on the basis of aforementioned techniques scheme one or 2, the utility model provides rushes scarce punch die, also have at least one be connected with described upper bolster there is flexible stock pressing rod.

As optimal technical scheme, the utility model provides rushes scarce punch die, and described stock pressing rod is polyurethane pressure material rod, and quantity is two.

During work, upper bolster drives drift undershoot, the guide groove that first locating dowel of the cutting edge portion of protrusion drift enters location-plate is or/and in the hole that counterdie coordinates with described drift, during drift punching material, the position of blanking is stressed large, and the position that does not contact workpiece is stressed little, cause drift to be subject to making it the radial load of offset axis, and first enter the guide groove of location-plate or/and the locating dowel in counterdie makes drift be subject to a reverse support force, can avoid fractureing of drift.Drift is completely descending, goes out breach, and material beans are discharged.Drift backhaul, takes out workpiece, and stamping-out completes.

Further in improvement project, the guide groove that enters location-plate in locating dowel is or/and the Kong Zhonghou that counterdie coordinates with described drift, and stock pressing rod is pushed down after workpiece, and drift is expected under continuing in a state of excitement again.

The beneficial effects of the utility model are: the utility model provides rushes scarce punch die, during drift punching material, the guide groove that first locating dowel of the cutting edge portion of protrusion drift enters location-plate is or/and in the hole that counterdie coordinates with described drift, make drift be subject to a reverse support force, when drift is subject to making it the radial load of offset axis, can avoid fractureing of drift, increase the service life, improve the quality of products.

Accompanying drawing explanation

Accompanying drawing is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the structural representation of to be processed of embodiment and machining gap;

Fig. 2 is that embodiment rushes the structural representation that lacks punch die;

Fig. 3 is that Fig. 2 embodiment rushes the upper die structure schematic diagram that lacks punch die;

Fig. 4 is that Fig. 2 embodiment rushes the lower die structure schematic diagram that lacks punch die.

The specific embodiment

As shown in Figures 2 to 4 rush scarce punch die, there is upper bolster 1, die shoe 7, drift 2 and two polyurethane pressure material rods 3 are removably connected on described upper bolster 1, stock pressing rod 3 is positioned at drift 2 away from machining gap 10 1 sides of to be processed 5, counterdie 6 is removably connected on described die shoe 7, location-plate 4 is removably connected with described die shoe 7, one side of described drift 2 heads has the locating dowel 9 of the cutting edge portion of protruding drift 2, described counterdie 6 has the hole 8 coordinating with drift, described location-plate 4 has the guide groove inserting for described locating dowel 9, guide groove coordinates with the position in hole 8, described locating dowel 9 is inserted into after the guide groove of described location-plate 4, can continue to insert in the hole 8 coordinating with drift, locating dowel 9 is inserted into after the guide groove of described location-plate 4, the cutting edge portion of drift 2 just rushes cuts to be processed 5, go out breach 10.

In other embodiments, punching lacks punch die and has upper bolster 1, die shoe 7, drift 2 and two have flexible stock pressing rod 3 and are removably connected on described upper bolster 1, stock pressing rod 3 is positioned at drift 2 away from machining gap 10 1 sides of to be processed 5, counterdie 6 is removably connected on described die shoe 7, one side of described drift 2 heads has the locating dowel 9 of the cutting edge portion of protruding drift 2, described counterdie 6 has the hole 8 coordinating with drift, the protrusion height of described locating dowel 9 is higher than the thickness of to be processed 5, locating dowel 9 is inserted into behind the hole 8 that described counterdie 6 coordinates with drift, the cutting edge portion of drift 2 just rushes cuts to be processed 5, go out breach 10.

Obviously, the utility model is not limited to above preferred embodiment, also can be in the spirit of the utility model claim and description restriction, carry out conversion and the improvement of various ways, can solve same technical problem, and obtain the technique effect of expection, therefore do not repeat.Those of ordinary skill in the art can be from the disclosed content of the utility model directly or all schemes of associating, as long as within the spirit limiting in claim, also belong to protection domain of the present utility model.

Claims

1. punching lacks a punch die, comprises upper bolster (1); Die shoe (7); Be connected to the drift (2) on described upper bolster (1); Be connected to the counterdie (6) on described die shoe (7), it is characterized in that: a side of described drift (2) head has the locating dowel (9) of the cutting edge portion of protrusion drift (2), described counterdie (6) has the hole (8) coordinating with described drift, the protrusion height of described locating dowel (9) is higher than the thickness of to be processed (5), locating dowel (9) is inserted into behind the hole (8) that described counterdie (6) coordinates with drift, and the cutting edge portion of drift (2) just rushes cuts to be processed (5).

2. punching lacks a punch die, comprises upper bolster (1); Die shoe (7); Be connected to the drift (2) on described upper bolster (1); Be connected to the counterdie (6) on described die shoe (7); The location-plate (4) being connected with described die shoe (7), it is characterized in that: a side of described drift (2) head has the locating dowel (9) of the cutting edge portion of protrusion drift (2), described counterdie (6) has the hole (8) coordinating with drift, described location-plate (4) has the guide groove inserting for described locating dowel (9), described locating dowel (9) is at least inserted into after the guide groove of described location-plate (4), and the cutting edge portion of drift (2) just rushes cuts to be processed (5).

3. punching according to claim 1 and 2 lacks punch die, it is characterized in that: also have at least one be connected with described upper bolster (1) there is flexible stock pressing rod (3).

4. punching according to claim 3 lacks punch die, it is characterized in that: described stock pressing rod (3) is polyurethane pressure material rod, and quantity is two.