CN205147308U

CN205147308U - A moulding -die for making have carbide edge bearing of inclined hole

Info

Publication number: CN205147308U
Application number: CN201520957153.5U
Authority: CN
Inventors: 傅朝坤
Original assignee: Sichuan Kun Tian Wimet LLC
Current assignee: Sichuan Kun Tian Wimet LLC
Priority date: 2015-11-26
Filing date: 2015-11-26
Publication date: 2016-04-13
Anticipated expiration: 2025-11-26

Abstract

The utility model discloses a moulding -die for making have carbide edge bearing of inclined hole, including last stopper, lower stopper, upper punch, low punch, bed die and core bar, be provided with the die cavity in the bed die, the lower extreme of upper punch with the upper end of low punch all sets up in the die cavity, the lower extreme terminal surface of upper punch with the upper end terminal surface of low punch is half circular surface, the core bar slope sets up in the bed die, and pass the vertical cross -section of die cavity, the fixed setting in both ends of core bar in the bed die. The utility model relates to a moulding -die for making have carbide edge bearing of inclined hole passes through the cooperation of upper punch, low punch, bed die and core bar, will have a moulded section of edge bearing of inclined hole, need not follow -up processing, does not cut the waste material, reduces the material cost, and the process is less, and production efficiency is high, has higher product percent of pass.

Description

For making the pressing mold of the carbide alloy edge bearing with inclined hole

Technical field

The utility model relates to a kind of pressing mold, particularly relates to a kind of pressing mold for making the carbide alloy edge bearing with inclined hole.

Background technology

Carbide cutter tool spacer has high wearability, so on extensive use machining tool, major function is protection cutter hub, and determine cutting-edge, the main manufacturing technology of carbide alloy edge bearing at present with inclined hole has:

Edge bearing is pressed into the pressed compact of atresia, be heated to 800 DEG C ~ 850 DEG C at sintering furnace and carry out pre-burning, become the porous pressed compact with some strength, then put into 120 DEG C ~ 150 DEG C liquid paraffins and carry out waxdip, also known as pre-burning-waxdip technology, after cooling, carry out machine drilling;

Carbide alloy mixture is mixed rubber (binder) and increase compact strength, be pressed into the pressed compact of atresia, direct mechanical is holed;

Edge bearing is pressed into the pressed compact of atresia, after being sintered to hard alloy finished product, uses the modes such as electric spark bed punching.All adopt processing raw with the inclined hole of upper type product.

Conventional borehole technical scheme due to compact strength low, the defect such as clamping and boring can cause clamping and working position to lack limit, arrisdefect, split and scrapping; Bit speed is low, and inclined hole inwall has cutter trade coarse; Hard alloy finished product electric spark bed punching qualification rate is high, but efficiency is extremely low, and thickness is that the product of 5mm about must process an inclined hole in 25 ~ 40 minutes.In addition, inclined hole adopts processing out, causes loss of material.Conventional solution product percent of pass is low, inclined hole inner wall coarse, production efficiency are low, material waste is large, and production cost is high.

Utility model content

The purpose of this utility model is just to provide a kind of pressing mold for making the carbide alloy edge bearing with inclined hole to solve the problem.

The utility model is achieved through the following technical solutions above-mentioned purpose:

A kind of pressing mold for making the carbide alloy edge bearing with inclined hole, comprise upper limit position block, lower position block, upper punch, low punch, former and core bar, die cavity is provided with in described former, the lower end of described upper punch and the upper end of described low punch are all arranged in described die cavity, the lower end surface of described upper punch and the upper end end face of described low punch are semicircle face, described core bar is inclined in described former, and pass the vertical section of described die cavity, the two ends of described core bar are fixedly installed in described former.

Particularly, described die cavity is arranged on the middle part of described former, and the center of cylindrical structure of the lower end surface of described upper punch and the lower end surface composition of described upper punch and the center superposition of described die cavity, described core bar is through the center of described die cavity.

Particularly, the axis of described core bar and the axis of described die cavity angularly equal the angle at described edge bearing inclined hole angle of inclination.

Further, described former is provided with the through hole for extracting described core bar out.

The beneficial effects of the utility model are:

The utility model is a kind of for making pressing mold with the carbide alloy edge bearing of inclined hole by the cooperation of upper punch, low punch, former and core bar, by the edge bearing moulded section with inclined hole, without the need to following process, there is no waste cut materials, reduce Material Cost, operation is less, and production efficiency is high, has higher product percent of pass.

Accompanying drawing explanation

Fig. 1 is the structural representation of the pressing mold for making the carbide alloy edge bearing with inclined hole described in the utility model, there is shown internal structure;

Fig. 2 is the sectional view of former described in the utility model;

Fig. 3 is the sectional view of the pressing mold for making the carbide alloy edge bearing with inclined hole described in the utility model.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of pressing mold for making the carbide alloy edge bearing with inclined hole of the utility model, comprise upper limit position block 1, lower position block 6, upper punch 2, low punch 7, former 3 and core bar 4, die cavity 5 is provided with in former 3, the lower end of upper punch 2 and the upper end of low punch 7 are all arranged in die cavity 5, the lower end surface of upper punch 2 and the upper end end face of low punch 7 are semicircle face, core bar 4 is inclined in former 3, and pass the vertical section of die cavity 5, the two ends of core bar 4 are fixedly installed in former 3, die cavity 5 is arranged on the middle part of former 3, the center of cylindrical structure of the lower end surface of upper punch 2 and the lower end surface composition of upper punch 2 and the center superposition of die cavity 5, core bar 4 is through the center of die cavity 5, the axis of core bar 4 and the axis of die cavity 5 angularly equal the angle at edge bearing inclined hole angle of inclination, former 3 is provided with the through hole for extracting core bar 4 out.

The utility model is as follows for the operation principle of the pressing mold making the carbide alloy edge bearing with inclined hole:

Low punch 7 is loaded former 3 die cavity 5, pad upper and lower limited block 6, insert in through hole and install core bar 4, be put in synchronous bidirectional compacting mold pressing frock, the compound of weighing is poured into former 3 die cavity 5, put into upper punch 2, upper limit position block 1 on pad, upper punch 2 is under the effect of hydraulic press pressure, move down pressed powder, pressure is synchronously delivered on low punch 7 on an equal basis by powder and mould, suppress in upper punch 2 pairs of powder upper part, low punch 7 is synchronously suppressed powder lower part, core bar 4 with the time bear both up and down to pressure, two-way pressure offsets, make core bar 4 bear pressure to reduce, core bar 4 is avoided to bend or fracture, improve die life.

When upper punch 2 move down pressed powder concordant with upper limit position block 1 time, former 3 lower surface goes downwards on lower position block 6, and pressing process completes, and pressed compact presses; Pressurize cools to pressed compact, compact strength, hardness is increased, deviates from core bar 4, then eject pressed compact by low punch 7, complete knockout course.

The semicircle place wall thickness of upper punch 2 and low punch 7 shaping is thin, very easily damaged, therefore, forming property must be adopted good, the carbide alloy mixture that pressing pressure is minimum.

Pressed compact by low pressure-vacuum-sintering finished product, without the need to following process.

Carbide alloy mixture (binder paraffin content 5%-6%) is heated to 45 DEG C ~ 50 DEG C, and compound has good plasticity, under pressing pressure effect, the powder of high compression ratio part easily moves to low compression ratio part, green density is even, and sintering shrinkage is consistent, and product size precision is high.

In pressing process, upper low punch 7 adopts synchronous bidirectional to suppress, and horizontal core bar 4 is subject to the substantially equal pressure of the contrary size in direction that low punch 7 bestows simultaneously, avoid core bar 4 to be bent or to break, in addition, this compound specific mo(u)lding pressure is little, die life is long

Inclined hole, by die forming, without the need to following process, does not have waste cut materials, reduces Material Cost; Operation is less, and production efficiency is high; Mechanical processing waste product and machining deviation, product percent of pass is high, inclined hole inner wall smooth, shape and consistent size.

The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion made according to the technical solution of the utility model, all falls within protection domain of the present utility model.

Claims

1. one kind for making the pressing mold of the carbide alloy edge bearing with inclined hole, comprise upper limit position block and lower position block, it is characterized in that: also comprise upper punch, low punch, former and core bar, die cavity is provided with in described former, the lower end of described upper punch and the upper end of described low punch are all arranged in described die cavity, the lower end surface of described upper punch and the upper end end face of described low punch are semicircle face, described core bar is inclined in described former, and pass the vertical section of described die cavity, the two ends of described core bar are arranged in described former.

2. the pressing mold for making the carbide alloy edge bearing with inclined hole according to claim 1, it is characterized in that: described die cavity is arranged on the middle part of described former, the center of cylindrical structure of the lower end surface of described upper punch and the lower end surface composition of described upper punch and the center superposition of described die cavity, described core bar is through the center of described die cavity.

3. the pressing mold for making the carbide alloy edge bearing with inclined hole according to claim 2, is characterized in that: the axis of described core bar and the axis of described die cavity angularly equal the angle at described edge bearing inclined hole angle of inclination.

4. the pressing mold for making the carbide alloy edge bearing with inclined hole according to claim 3, is characterized in that: described former is provided with the through hole for extracting described core bar out.