CN202639062U

CN202639062U - Cold stamping auxiliary tool

Info

Publication number: CN202639062U
Application number: CN 201220313103
Authority: CN
Inventors: 袁志龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-29
Filing date: 2012-06-29
Publication date: 2013-01-02
Anticipated expiration: 2022-06-29

Abstract

The utility model discloses a cold stamping auxiliary tool. The auxiliary tool is a gasket which is positioned between a punching member and a convex die, a contact surface between the gasket and the punching member is matched with the punching member in the shape; and a contact surface between the gasket and the convex die is a plane. According to the auxiliary tool and a processing method, the quality of a product is improved, and the product pressed by using the technique is shaped to totally meet a requirement of a component so as to meet a requirement of a client; and moreover, procedures are eliminated, and the cost is reduced.

Description

A kind of cold stamping accessory

Technical field

The utility model relates to the cold stamping field, in particular, relates to a kind of accessory with the former material bending ram of camber line.

Background technology

In the technique that cold stamping is shaped; the strip piece that is camber line for the cross section rushes when curved; ftractureing often can appear in the shape face of stamping parts, the phenomenon of fold, folded material; these phenomenons can have influence on outward appearance, the quality of finished product; even finished product is scrapped; Adopts measure is when punching press the shape face to be carried out reinforcement, Jia Bao, adds and draw groove at present, even increases the preform treatment process one, but still can not reach ideal effect.

The utility model content

Technical problem to be solved in the utility model is to realize that a kind of strip piece of guaranteeing that the cross section is camber line rushes curved punching press accessory and process thereof without cracking, fold, folded material phenomenon.

To achieve these goals, the technical solution adopted in the utility model is: a kind of cold stamping accessory, this accessory is the pad between stamping parts and punch, and the contact-making surface of described pad and stamping parts and stamping parts shape adapt, with the contact-making surface of punch be the plane.

Described pad is made by polyurethane, rubber or plastic cement with elasticity and quality softness.

Stamping parts length before described pad and the punching press, thickness error are ± 10%.

The utility model has the advantage of that this accessory and processing method thereof have improved product quality, by the product of taking this technique to suppress out, pass through again after the shaping, meet the requirement of part fully, thereby satisfy client's requirement, and reduced operation, reduced cost, specifically, the shape face of some part, needing increases several roads piece pre-forming die, just can reach the shape face requirement of part; Also to amplify the scantling of product, to satisfy the requirement of flanging, like this, even compressing, also must increase trimming die.Thereby greatly increased cost (raw material, processing, artificial etc. cost); And the appearance of this new technology has just changed everything well.After at first shimming was shaped substantially, it was just passable only to need to carry out shaping at same pair of mould; The required tablet of product does not need to bleed off pressure the limit surplus afterwards, directly the disposable position that is put into of the spread material of part, as long as can satisfy the dimensional requirement of part.

Description of drawings

The below briefly explains the content of every width of cloth accompanying drawing expression in the utility model specification and the mark among the figure:

Fig. 1 is that the cold stamping accessory uses the state explosion view;

Fig. 2,3 is stamping parts finished product schematic diagram;

Mark among the above-mentioned figure is: 1, punch; 2, die; 3, pad; 4, stamping parts.

The specific embodiment

Referring to Fig. 1-3 as can be known, the cold stamping accessory is the pad 3 between stamping parts 4 and punch 1, stamping parts 4 is one and has been circular arc through a punching press cross section, the metal blank of the wavy or special-shaped shape such as circular-arc, need under punch 1 of the present utility model and die 2 punching presses, finish the crooked stamping procedure with the crooked punching press different directions first time during two times punch, yet arc line shaped face knee can produce unnecessary material, before punch 1 and die 2 are not incorporated into the end, the material that these are unnecessary, will be deposited in the gap of mould, treat that mould is incorporated at the end, these unnecessary material will be superimposed, and form folded material or fold.And after adding pad 3 between stamping parts 4 and the punch 1, can eliminate mould and be incorporated into the space between the stamping parts 4 and mould before the end, force stamping parts 4 all the time with open and flat, full state conformal.Therefore this pad 3 need to adapt with stamping parts 4 with the contact-making surface shape of stamping parts 4, for example be semi-cylindrical, wavy or arc line shaped, the contact-making surface of another side and punch 1 is the plane, two end faces also are the plane, and the thickness of pad 3, stamping parts 4 thickness (whole height) before length and the punching press, error in length is ± 10%, preferred pad 3 is slightly less than the size of stamping parts 4, be advisable to fill up stamping parts 4 cavitys, matched moulds process Intermediate gasket 3 can be filled whole die cavity like this, the material require softness of therefore making pad 3 has flexible nonmetallic materials, can select to have the polyurethane of elasticity and quality softness, rubber or plastic cement.

Pad 3 must be placed between stamping parts 4 and the punch 1, because stamping parts 4 is concave surface with pad 3 contact-making surfaces, is easy to place pad, is difficult to the location if be placed on can place between stamping parts 4 and the die 2, affects the punch forming effect; Pad 3 must be substantially to be semi-cylindrical, need to adapt with stamping parts 4 with the contact-making surface shape of stamping parts 4, itself and punch 1 contact-making surface are the plane, have guaranteed to have increased pad 3 integral thickness, solidness, because such shape is the most stable, firm, be difficult for crushed, simultaneously also can with stamping parts 4 close contacts, avoid folded material, if change to semi-annular shape, can greatly reduce its service life, easily crushed, if use other shapes then may affect the conformal effect.

Utilize above-mentioned pad 3 to add man-hour, mainly be divided into following four steps:

Step 1, after installing mould, plays by punch press punch 1, and adjustment mold stroke, be adjusted to when mould matched moulds during to end of travel, concave, convex

counterdie

2,1 gap that 15-30% pad 3 thickness are arranged, preferred 20% gap, thereby can guarantee just one-step forming of stamping parts 4, can avoid again pad 3 crushed;

Step 2, stamping parts 4 is placed between the concave,

convex counterdie

2,1, pad 3 is placed between stamping parts 4 and the punch 1 again, form punching press, because stroke is adjusted, mould this moment complete matched moulds not, and mould and 4 of stamping parts be positioned over and had flexible pad 3, so need to keep matched moulds state needs behind the matched moulds more than 3 seconds, preferred 5 seconds, with the crooked basic configuration of guaranteeing stamping parts 4 out;

Step 3, adjustment mold stroke are adjusted to fully matched moulds of mould, i.e. stroke state during normal punching press;

Step 4, the stamping parts 4 behind step 2 shaping and punching is placed between the concave,

convex counterdie

2,1, carry out the shaping punching press, this moment, mould was there to be basic curved shape, matched moulds in the situation that does not have pad 3, folded material or fold phenomenon also can not occur again, after the shaping punching press, stamping parts 4 is finished moulding, product surface is bright and clean, smooth, and product percent of pass can reach nearly 100%.

Need to prove: my this new Sheet Metal Forming Technology is only suitable for the book plate (more book is better) below 1.0mm; Material can be gold, silver, copper, aluminium, iron, 409L(to hard metal material, effect is bad).

The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims

1. cold stamping accessory, it is characterized in that: this accessory is for being positioned at the pad (3) between stamping parts (4) and the punch (1), contact-making surface and stamping parts (4) shape of described pad (3) and stamping parts (4) adapt, with the contact-making surface of punch (1) be the plane.

2. cold stamping accessory according to claim 1, it is characterized in that: described pad (3) is made by polyurethane, rubber or plastic cement with elasticity and quality softness.

3. cold stamping accessory according to claim 1 and 2 is characterized in that: stamping parts (4) length before described pad (3) and the punching press, thickness error are ± 10%.