CN201338049Y

CN201338049Y - Punch device

Info

Publication number: CN201338049Y
Application number: CNU2009200835706U
Authority: CN
Inventors: 刘军; 鄢荣清; 潘从勇; 屈瑞; 孙芽; 贾锋
Original assignee: Dongfeng Xiangfan Fasten & Press Co Ltd
Current assignee: Dongfeng Xiangyang Spinning Technology Co Ltd
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2009-11-04
Anticipated expiration: 2019-01-21

Abstract

A punch device comprises a punch head as upper mould and a concave mould as lower mould; wherein, a material return plate is mounted on a punch head fixed base, the punch head on the punch fixed base is extended out of the corresponding hole on the material return plate, a positioning ring is fixed on the punch fixed base and is mounted on the exterior of the material return plate, a positioning base is mounted on the exterior of the concave mould and a hole matched with the punch end of machined work piece is arranged in the positioning base. The utility model solves the defects that error is generated during the fabrication, machining and mould assembly process in prior art; the utility model ensures positioning benchmark to be consistent with the punch benchmark and avoids the accuracy error caused by mould assembly of upper mould and lower mould from affecting products; meanwhile, the circular run-out magnification situation is relieved as the positioning benchmark is not vertical to the punch benchmark, the circular run-out value is reduced and the machining stability is improved. Besides, the long mould assembly time when punch or concave mould is replaced is avoided; the efficiency and accuracy of mould maintenance are improved.

Description

A kind of decompressor

Technical field

The utility model belongs to the punch process technical field, relates to a kind of decompressor.

Background technology

At present, production technology adopts the belt pulley product of processing mounting holes behind the first spinning, for the processing method for stamping that adopt of enhancing productivity more.During punching press, general design all is, drift is placed patrix, and die is placed counterdie, and workpiece to be processed is fixed in counterdie, utilizes product spinning inwall location; In order to dwindle material returned stroke, positioning element and die be integrated places counterdie.

Such processing method can be brought a problem, and the locating surface of product inwall is a grooved, and the location benchmark is at counterdie, and drift as the punching press benchmark of product installing hole at patrix.Upper and lower mould all can produce error when making processing, matched moulds assembling, the accumulative total of error adds the error of workpiece to be processed spinning blank self to make the round jitter values of product grooved be in bigger level.Belt pulley is when running up, and bigger beating can cause that engine noise is big, vibration is big, reduces belt pulley and related accessories service life such as belt, support for example.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of benchmark round jitter values consistent with design basis, that reduce product of locating, and improves the decompressor of its transmission usefulness.

The technical scheme that its technical problem that solves the utility model adopts is: be to realize the material returned, still adopt drift at patrix, the die mould structure at counterdie; Stripper is installed on the drift holder, and the drift on the drift holder passes from the hole of stripper correspondence; Locating ring is fixed in the drift holder, and is loaded on outside the stripper; Die is adorned positioning seat outward, when product is put into mould, carries out coarse positioning.The hole of matching with workpiece to be processed punching end is arranged in the positioning seat.

The utility model cooperates (replacing former and the mode die one) with locating ring with the drift holder, all place patrix with drift, and be the benchmark centering with the drift.

Described locating ring and workpiece to be processed inner chamber interference fits.

Described positioning seat inner chamber must keep sky to open with the processed product exocoel.

Described stripper lower end exocoel must keep sky to open with the processed product inner chamber.

Compared with prior art, the utility model has guaranteed that the location benchmark is consistent with the punching benchmark, avoided the trueness error that upper and lower mould matched moulds causes taken in the product and gone, the circle that location benchmark of having alleviated simultaneously and punching benchmark out of plumb the cause amplification phenomenon of beating, round jitter values is reduced, improved the stability of processing.Every replacing drift or die before also having avoided in addition improving all will be spent matched moulds again of a lot of times, improve efficient and accuracy that mould is repaired.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model processed product schematic diagram

Fig. 2 is the decompressor structural representation of prior art

Fig. 3 is the utility model structural representation.

The specific embodiment

Among Fig. 1, A is an installing hole to be processed on the spinning belt pulley 7 to be processed, and it is the reference for installation of product.The relative centre bore A of race has the requirement of beating of a circle, and this is a critical function item of product.

Among Fig. 2,1 ' is that drift, 2 ' is that die, 3 ' is that product orientation face, 4 ' is that drift holder, 5 ' is stripper.During processing mounting holes with (3 ') as the product orientation face at counterdie; And the benchmark drift 1 ' of punch process is at patrix.The error of Mould Machining and upper and lower mould matched moulds can cause the relative installing hole of product grooved to have bigger circle to beat.7 is spinning belt pulley to be processed.

Among Fig. 3, comprise drift 1 as patrix, be locating ring as the die 2,3 of counterdie, 4 is the drift holder, and 5 is stripper, and 6 is positioning seat.Locating ring 3 is a reference for installation with drift holder 4, after adopting close-fitting to install, with drift 1 is machining benchmark, behind the centering locating ring 3 is carried out fine finishining, guarantee that locating ring and product are in the interference fits state, be consistent, with the installing hole of the utility model processing spinning belt pulley to guarantee product orientation benchmark and punching benchmark, the deviation effects circle of having avoided matched moulds to bring is beated, and has reduced the difficulty of repairing.Also adopt positioning seat 6 to be coarse positioning in addition, change material returned mode, carry out the rigidity dnockout, solved the structure problem of coarse positioning and the material returned after changing with stripper 5.7 is spinning belt pulley to be processed.Described locating ring and workpiece to be processed inner chamber form interference fits.The hole of matching with workpiece to be processed punching end of described positioning seat 6, its physical dimension are slightly larger than or equal workpiece to be processed punching end appearance structure size.Described stripper 5 lower end appearance structure sizes are less than workpiece to be processed punching end inner-cavity structure size.

The utility model is applied to spinning belt pulley and installs in the punch machining process of locating hole, reaches better level with the circle that guarantees the product grooved function of beating.

Claims

1, a kind of decompressor, comprise drift as patrix, as the die of counterdie, stripper is installed on the drift holder, drift on the drift holder passes from the hole of stripper correspondence, it is characterized in that: locating ring is fixed in the drift holder and is loaded on outside the stripper, die is adorned positioning seat outward, and the hole of matching with workpiece to be processed punching end is arranged in the positioning seat.

2, decompressor according to claim 1 is characterized in that: described locating ring and workpiece to be processed inner chamber interference fits.

3, decompressor according to claim 1 is characterized in that: the hole that described positioning seat matches with workpiece to be processed punching end, its physical dimension are slightly larger than or equal workpiece to be processed punching end appearance structure size.