CN102861807A

CN102861807A - Trimming mold for continuously cutting forged flash

Info

Publication number: CN102861807A
Application number: CN 201210338485
Authority: CN
Inventors: 迟兆昱; 侯晋; 白旭宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-14
Filing date: 2012-09-14
Publication date: 2013-01-09

Abstract

The invention relates to a trimming mold for continuously cutting a forged flash. The conventional design method that the cutting edge of the trimming mold is parallel to the flash of a forging piece is changed. The cutting edge of the trimming mold is designed as an inclined cutting edge, that is, the cutting edge and the flash of the forging piece form a certain angle. The trimming mold for continuously cutting the forged flash solves the technical problems that equipment is damaged by an overlarge trimming force and the service life of the forged trimming mold is prolonged and the like. The trimming mold for continuously cutting the forged flash comprises the cutting edge which is inclined, that is, the cutting edge and the flash of the forging piece form the certain angle, and the inclination direction is from the outer side of the cutting edge to the inner side of the cutting edge. The inclined angle is 3-5 degrees or 5-7 degrees. According to the trimming mold for continuously cutting the forged flash provided by the invention, the cutting edge of the forged trimming mold is designed in such a structure that the cutting edge and the flash of the forging piece form the certain angle so that the forging piece is basically not contacted with the cutting edge of the trimming mold when the forging piece is placed into an impression of the trimming mold, therefore, the trimming force is reduced while the contact time of the cutting edge and the forging piece is reduced, the temperature of the cutting edge is reduced, and the service life of the mold is remarkably improved.

Description

The edger of overlap is forged in the continous way excision

Technical field

The present invention relates to a kind of continous way excision and forge the edger of overlap.

Background technology

Forging shaving die is one of core mould comparatively expensive on the stamping line, edger is worked in high-temperature and high-pressure conditions, usually the edger cutting edge adopts and the overlap parallel design in surface, and cutting edge and forging are long time of contact, cause the die point temperature higher, lost efficacy easily in edge surface and nearly superficial layer position, directly cause a whole set of mould to lose efficacy and scrap, for some larger forging, the overlap cross-sectional area is larger, resistance of deformation is larger during side cut, and equipment load is had relatively high expectations.

Summary of the invention

The present invention adopts the edger of continous way excision forging flash, change traditional edger cutting edge method for designing parallel with forging flash, be tilting with the edger Cutting Edge Design, be cutting edge and forging flash at an angle, solve the excessive damage that equipment is caused of side cut power, improved the technical problems such as forging edger life-span.

The present invention is realized by following technical scheme:

The edger of overlap is forged in the excision of a kind of continous way, comprises cutting edge, and cutting edge is tilting, namely cutting edge and forging flash at an angle, incline direction be by the inclination of cutting edge lateral cutting edge inboard.

The angle of inclination is 3-5 ° or 5-7 °.

The present invention takes full advantage of the relation of power and displacement in the physics, draw the experience that each forging mould in actual side cut process is stressed, be heated, by improving heat transfer type, to forge the edger Cutting Edge Design for forging flash at an angle, forging forging when putting into the edger impression is not contacted with the edger cutting edge basically, reduce cutting edge and forging time of contact when reducing side cut power, reduction cutting edge temperature reaches the purpose that significantly improves die life.

Description of drawings

Fig. 1, Fig. 2 are schematic diagrames before forging is cut edge;

Fig. 3, Fig. 4 are schematic diagrames after forging is cut edge;

Fig. 5 is structural representation of the present invention, and namely edger cutting edge and forging flash are at an angle;

Fig. 6 is the sectional view of Fig. 5;

Fig. 7 is edger structural representation before improving, and namely the edger cutting edge is parallel with forging flash;

Fig. 8 is the sectional view of Fig. 7;

Fig. 9 is edger working state schematic representation of the present invention.

The specific embodiment

Shown in Fig. 1-9, forging 1 stressed backward lower motion, the overlap 4 that links to each other with forging 1 at first contacts with the high point of edger 2 outermost cutting edge 3, shearing by cutting edge 5 is with overlap 4 excisions of forging 1, along with forging 1 continues motion downwards, the cutting edge of edger 2 medial lowpoint begins to contact with overlap 4, until center line minimum point 6, edger 2 cutting edges 5 are with forging 1 overlap 4 complete resections.

Choosing of edger cutting edge of the present invention and forging flash angle of inclination, determined by following three aspect factors:

1, the edger cutting edge can avoid forging directly to contact with die point with forging flash at an angle, effectively reduces mold temperature, prevents that the too fast die point that causes of mould intensification lost efficacy.Angle is larger, and forging flash is far away apart from die point, and it is slower that mold temperature raises, but Effective Raise die life.

2, edger cutting edge and forging flash angle are larger, and the drop of edger cutting edge minimum point and peak is also just larger, and then side cut power is also just less, can be conducive to protection equipment or take less equipment realization than the production of heavy forging.

3, edger cutting edge and forging flash angle are larger, can increase adding the required time in man-hour, cause the edger process-cycle to increase.

Factor according to above-mentioned three aspects, when choosing the angle of cutting edge and overlap, enough large such as the trimming equipment tonnage, when general forging is chosen 3-5 ° of angle, above-mentioned three kinds of situations are all comparatively desirable, and the optional 5-7 of the forging that complex class forging or trimming quality are had relatively high expectations ° angle is comparatively suitable; In the time of can not satisfying the ability that forging cuts edge required such as the trimming equipment tonnage, can add wide-angle according to actual conditions, until satisfy the side cut requirement.

Concrete beneficial effect of the present invention is as follows:

1, take the steyr bent axle as example; the edger cutting edge adopts traditional cutting edge method for designing parallel with overlap before improving; side cut power is about 800 tons; be tilting by improving the edger Cutting Edge Design; cutting edge and overlap at an angle, side cut power is reduced to 290 tons, can protect equipment; reduce equipment failure rate, effect is very obvious.

2, take the steyr bent axle as example, one cover adopts the present price of edger of built-up welding processing above 300,000 yuans, just need the mould unloading reparation after the after heat treatment side cut that can finish of a mold only is 2000, both affected production efficiency, product cost is significantly increased.After improving the life-span reached 5000/more than the cover, not only make die cost reduce by 60%, also reduced mold repair and changed number of times, production efficiency obviously improves.

The present invention selects forging center line (can slightly adjust in conjunction with actual conditions) to be symmetrical centre, along forging direction of motion skew certain distance, as minimum point, with the V-structure cutting edge of both sides outermost end trim lines formation certain angle, make the side cut process change the continous way excision into by disposable simultaneously excision.

Claims

1. the edger of a continous way excision forging overlap comprises cutting edge, and it is characterized in that: cutting edge is tilting, and namely cutting edge and forging flash tilt at an angle, and incline direction is by tilting in the cutting edge of cutting edge lateral.

2. the edger of overlap is forged in a kind of continous way excision according to claim 1, and it is characterized in that: cutting edge and forging flash angle of inclination are 3-5 ° or 5-7 °.