CN202438614U

CN202438614U - Bending concave die for preventing workpiece strain

Info

Publication number: CN202438614U
Application number: CN2012200548811U
Authority: CN
Inventors: 林智胜; 李建炜; 陈晓明
Original assignee: FUJIAN FUMO PRECISION TECHNOLOGY Co Ltd
Current assignee: FUJIAN FUMO PRECISION TECHNOLOGY Co Ltd
Priority date: 2012-02-21
Filing date: 2012-02-21
Publication date: 2012-09-19
Anticipated expiration: 2022-02-21

Abstract

The utility model belongs to a die, in particular to a bending concave die. The utility model discloses a bending concave die for preventing workpiece strain. The bending concave die is characterized by consisting of a bending concave die insert and a rolling shaft, wherein the radius of the rolling shaft is the same as that of the bending R angle of the bending concave die; in the bending concave die insert, a groove capable of containing the rolling shaft is processed according to the radius of the R angle at the bending R angle by use of the bending concave die; and the rolling shaft is inlaid in the groove to form the bending concave die. The existing bending concave die is improved into the combination of a bending concave die insert and a rolling shaft to form the bending concave die disclosed by the utility model, therefore, the sliding of the workpiece and the bending concave die is changed into rolling in the bending process, the contact surface between the workpiece and the bending concave die is reduced in the bending process, the bending quality is improved, and the qualified rate of the product is guaranteed.

Description

The anti-crooked die of pulling workpiece

Technical field

The utility model belongs to mould, especially belongs to crooked die.

Background technology

In existing diel, the bending of product generally all is by like Fig. 1, shown in Figure 2, and crooked die 1 is sandwiched between lower bolster 4 and the ejector 3; Ejector 3 has up and down space, and its original state is surface and crooked punch 2 flush, and workpiece 5 places on crooked punch 2 and the ejector 3; Crooked punch 2 is to pressing down workpiece 5, and ejector 3 moves downward with workpiece 5, stops after putting in place; Whole BENDING PROCESS, the crooked R angle 14 of the crooked die 1 in workpiece 5 edges is to lower slider, and workpiece 5 is big with crooked die contact-making surface; Workpiece 5 is pulled easily, has the part of requirement will increase the fraction defective and the scrappage of product greatly to surfaces such as some outward appearances, sprayed product.

Summary of the invention

The utility model purpose is to overcome above-mentioned shortcoming, provides a kind of and can improve bending quality, guarantees the anti-crooked die of pulling workpiece of product percent of pass.

The technical scheme that the utility model adopted is a kind of anti-crooked die of pulling workpiece; Its main points are; It is made up of crooked die plate insert, roller bearing; The radius of roller bearing is identical with the crooked R angular radius of crooked die, and crooked die plate insert is sentenced the R angular radius by crooked die at crooked R angle and processed the groove that can hold roller bearing, and roller bearing is set in forms crooked die in the groove.

The utility model is on existing crooked die basis, to improve; Crooked die is made into to be combined by crooked die plate insert and roller bearing; Change rolling at BENDING PROCESS workpiece and crooked die into by slip like this; The contact-making surface of workpiece and crooked die when reducing bending improves bending quality, guarantees product percent of pass.

Description of drawings

Fig. 1 is existing BENDING PROCESS sketch map

Fig. 2 is existing crooked die 1 structure sketch map

Fig. 3 is the utility model structural representation

Fig. 4 is the utility model BENDING PROCESS sketch map

Wherein: 1 crooked die 11 crooked die plate insert 12 roller bearings 13 grooves, 14 crooked R angles, 2 crooked punch 3 ejectors 4 lower bolsters 5 workpiece.

The specific embodiment

Below in conjunction with view the utility model is carried out detailed description, following embodiment can make the professional and technical personnel more understand the utility model, but does not limit the utility model in any form.

Like Fig. 3, shown in Figure 4; A kind of anti-crooked die of pulling workpiece, it is made up of crooked die plate insert 11, roller bearing 12, and the radius of roller bearing 12 is identical with the crooked R angular radius of crooked die; Crooked die plate insert 11 is sentenced the R angular radius by crooked die at crooked R angle and is processed the groove 13 that can hold roller bearing 12; Roller bearing 12 is set in forms crooked die 1 in the groove 13, whole BENDING PROCESS, and workpiece 5 is along moving to rolling between the roller bearing 12 of crooked die 1; The contact-making surface of workpiece and crooked die avoids pulling workpiece when reducing bending.It is identical with prior art that all the other do not state part.

Claims

1. anti-crooked die of pulling workpiece; It is characterized in that; It is made up of crooked die plate insert (11), roller bearing (12); The radius of roller bearing (12) is identical with the crooked R angular radius of crooked die, and crooked die plate insert (11) is sentenced the R angular radius by crooked die and processed the groove (13) that can hold roller bearing (12) at crooked R angle, and roller bearing (12) is set in forms crooked die (1) in the groove (13).