CN2395822Y

CN2395822Y - Drawing mould for hard alloy

Info

Publication number: CN2395822Y
Application number: CN 99256541
Authority: CN
Inventors: 张玉崑
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-17
Filing date: 1999-12-10
Publication date: 2000-09-13
Anticipated expiration: 2009-12-10

Abstract

The utility model belongs to a manufacturing tool for metal proximate matter, which is especially provided to solve the problems that the structure of the traditional drawing mould is not reasonable and the material is wasted. The utility model is composed of a mould core of a drawing mould and a steel sheath. The utility model is characterized in that the match of the traditional mould and the steel sheath is changed into the taper cone surface match with a big taper angle. Because the structure is simplified and the processing difficulty is reduced, processing man hours are reduced, and the consumption is reduced. The utility model evidently saves noble hard alloy material. Thus, the utility model has the characteristics of simple structure and prominent economic effect, and is worthy of popularization and use.

Description

The novel hard alloy drawing mould

The utility model belongs to the instrument of shape processing, and it is specifically related to a kind of structure of novel drawing mould.

As everyone knows, the section bar of the wire rod of metal, bar, tubing and special cross section adopts the process manufacturing of drawing more, and the product that adopts this kind process to make can have accurate geomery, surface smoothness and cost are not high preferably.The drawing mould that uses adopts Hardmetal materials more at present, Hardmetal materials has hardness height, characteristics that wearability is good, but it also has defective more crisp and that tensile strength is low, therefore in use the outside of drawing die all insert steel bushing, adopt the bigger tight fit of the magnitude of interference between the two, or adopt hot charging or attire, to avoid the occurring phenomenon that drawing die is risen and splits in the course of the work.At present, between core rod and the steel bushing all be adopt the face of cylinder or less tapering for example semi-cone angle be 3 ° cooperating because the magnitude of interference is big and cooperate face length, increased the difficulty of processing.

The purpose of this utility model is the novel hard alloy drawing mould that proposes a kind of novel structure, it have economical with materials, rational in infrastructure, reduce cost, reduce the effect and the effect of making man-hour.

By as above design, the novel hard alloy drawing mould that this programme provided, it includes core rod and steel bushing, it is characterized in that adopting between its core rod and steel bushing the cooperating of the conical surface of big cone angle, and its cone angle is between 12 °～90 °.

Adopt this programme can embody following superiority: 1. this novel carbide alloy drawing mould scheme is that the cone angle of employing between carbide alloy drawing die in the prior art and the steel bushing than wide-angle cooperated, the outer top corner portion that do not stress substantially of drawing die top is removed like this, thereby saved more valuable Hardmetal materials, the effect that is significantly reduced to this can have been arranged; 2. use the wide-angle cone match between core rod and the steel bushing, more convenient aspect assembling and shutout, after guaranteeing the good tapering that cooperates,, not only reduced the waste product on this link to other workpiece size less demanding, also saved a large amount of man-hours; 3. this programme adopts the cooperation of the big wide-angle conical surface to make the more reasonable stress of mould: can be made mould tightr with combining of steel bushing by the power that section bar produced of drawing; Steel bushing section thickness in the compared with the prior art same steel bushing external diameter this programme of this scheme relatively strengthens, and makes steel bushing strengthen more to some extent the clamping force of core rod, prolongs the life-span of core rod; 4. after scrapping, the core rod wearing and tearing can at an easy rate core rod be withdrawed from from steel bushing; 5. for increasing the stability of mold work, the riveting of also interior angle of steel bushing bottom inwardly can being upset forms the location eave tile to core rod, and the adaptability of impact vibrations can be better; 6. simple in structure, the remarkable in economical benefits of this programme is worth of widely use.

Fig. 1 is the structural representation of this programme novel hard alloy drawing mould.

Fig. 2 is the structural representation of drawing mould in the prior art.

Fig. 3 is the structural representation that interior angle rammer riveting becomes the location eave tile under this programme steel bushing.

The embodiment of existing accompanying drawings this programme.This novel carbide alloy drawing mould is the improvement to traditional form drawing mould structure in the prior art.It is made of core rod 1 and steel bushing 2, and by drawing among the figure is workpiece 3.Between the core rod of traditional drawing die and the steel bushing be with the face of cylinder or less tapering for example semi-cone angle be 3 ° cone match structure.Because carbide alloy character is more crisp, split for avoiding at work the drawing core rod to be risen, must be at the outside of mould edge with steel bushing, cooperation between the two must have the bigger magnitude of interference, and this brings certain degree of difficulty to processing.Adopt cooperating of big cone angle between the mould of this programme and the steel bushing, its tapering is between 12 °～90 °, and this structural renewal can bring tangible economic benefit, and it has saved more valuable Hardmetal materials; Man-hour of processing and the consumption that has reduced waste product have been saved; The core rod wearing and tearing are scrapped the back dismounting easily, and its steel bushing also can reuse, and damaged mould also is more convenient for reclaiming.To be this programme make the location eave tile of core rod with the bottom interior angle of steel bushing through the rammer riveting to Fig. 3, has that the conformability of mould impact vibrations further improves more stable work behind this eave tile.Fig. 2 is the structure of traditional drawing mould, and the exterior angle part on mould top can not make full use of, and brings the waste on the material, can save about 30% by its Hardmetal materials of improvement of structure, and remarkable in economical benefits is worth of widely use.

Claims

1. novel hard alloy drawing mould, it includes core rod (1) and steel bushing (2), it is characterized in that adopting between its core rod and steel bushing the cooperating of the conical surface of big cone angle, and its cone angle is between 12 °～90 °.