CN205110786U

CN205110786U - Powder metallurgy die

Info

Publication number: CN205110786U
Application number: CN201520931521.9U
Authority: CN
Inventors: 朱普业
Original assignee: Bi Dream Technology (shanghai) Composite Material Co Ltd
Current assignee: Bi Dream Technology (shanghai) Composite Material Co Ltd
Priority date: 2015-11-20
Filing date: 2015-11-20
Publication date: 2016-03-30
Anticipated expiration: 2025-11-20

Abstract

The utility model belongs to the technical field of powder metallurgy, a powder metallurgy die is related to, which comprises a lower mold, the lower mould includes the sign mould, overlaps to be located the outer base member mould of sign mould with be fixed in the lower mould gland at the base member mould back, base member mould rear portion is equipped with interior step, sign mould rear portion is equipped with outer step, outer step quilt the lower mould gland seal in in the interior step. When powder metallurgy die stamps different signs need for the gear part blank, only need part of double teeming sign mould, the base member mould that the structure is complicated can continue the use, has consequently saved the die sinking cost.

Description

A kind of powder metallurgy die

Technical field

The utility model relates to powder metallurgical technology, particularly a kind of powder metallurgy die saving die sinking cost.

Background technology

In the production process of powder metallurgy product, in order to ensure identification, the trackability of product, have a kind of method to be carve identification number on the mould of product shaping, such identification number will be mirrored on product, thus leaves mark on product.But the method needs all to keep in repair the mark of die surface every year, thus ensure the mark uniqueness of the product that different year is produced.Maintenance mark long in time limit, costly, simultaneously because maintenance is that face process falls in one, the length of mould can shorten, thus causes the life-span of mould also can shorter.

Therefore, be necessary to provide a kind of new mould structure to solve the problems referred to above.

Utility model content

Main purpose of the present utility model is to provide a kind of powder metallurgy die saving die sinking cost

The utility model is achieved through the following technical solutions above-mentioned purpose: a kind of powder metallurgy die, comprise counterdie, described counterdie comprises mark mould, is sheathed on the base body die outside described mark mould and is fixed on the counterdie gland at the described base body die back side, described base body die rear portion is provided with interior step, described mark mould rear portion is provided with outer step, and described outer step is closed in described interior step by described counterdie gland.

Concrete, described outer step outer wall is provided with the first groove, and described interior stepped inner walls is provided with the second groove, accommodates a pilot pin between described first groove and the second groove.

Concrete, described mould also comprises patrix, is surrounded on the former outside described upper die and lower die and passes the plug at described patrix center and counterdie center.

Further, described patrix comprise tubular Shang Yichong, be close to described upper one punching inner side upper two punching and grip one rush patrix gland and upper molded plate.

Further, described upper two rush outer wall offers and is parallel to the guide groove that two rush axis, and described upper one rushes rear portion is provided with rear breach, and be clamped with a guide block between described rear breach and upper molded plate, described guide block part stretches in described guide groove.

Further, described upper two rush outer wall is provided with two guide grooves, and two guide grooves two rush mutually every 180 ° on outer wall on described, a described upper punching correspondence be provided with two after breach, each rear indentation, there is equipped with a guide block.

Adopt technique scheme, the beneficial effect of technical solutions of the utility model is:

1, when powder metallurgy die needs to stamp different marks to gear member blank, only need double teeming to identify mould part, baroque base body die can continue use, therefore saves die sinking cost;

2, cannot sway time the cooperation of guide block and guide groove can make two to be punched in flexible, avoid gear member blank to produce structural aberration;

3, two guide grooves can make guide effect better.

Accompanying drawing explanation

Fig. 1 be powder metallurgy die in working order under cross-sectional schematic;

Fig. 2 is the stereogram of patrix;

Fig. 3 is the explosive view of patrix;

Fig. 4 is the stereogram of a upper punching;

Fig. 5 is the partial enlarged drawing of A position in Fig. 4;

Fig. 6 is the stereogram of counterdie;

Fig. 7 is the explosive view of counterdie;

Fig. 8 is the stereogram of gear member.

Numeral in figure:

1-patrix, the upper punching of 11-, 111-tooth forming part, 1111-plane, 1112-concave surface, 1113-is domatic, 112-groove, breach after 113-, upper two punchings of 12-, 121-guide groove, 13-patrix gland, 14-upper molded plate, 15-protective sleeve, 151-neck, 152-shoulder, 16-guide block;

2-counterdie, 21-identifies mould, 211-outer step, 212-first groove, 22-base body die, step in 221-, 222-second groove, 23-counterdie gland, 24-screw, 25-pilot pin;

3-former;

4-plug;

5-gear member blank, 51-teeth portion, tooth in 511-, 512-side tooth, 52-mark part.

Detailed description of the invention

Below in conjunction with specific embodiment, the utility model is described in further detail.

As shown in Figure 1 to Figure 3, a kind of powder metallurgy die, comprises patrix 1, counterdie 2, is surrounded on the former 3 outside patrix 1 and counterdie 2 and passes the plug 4 at patrix 1 center and counterdie 2 center.The upper punching 11 that patrix 1 comprises tubular, the protective sleeve 15 be close to upper two punchings 12 inside a punching 11, the patrix gland 13 gripping a punching 11 and upper molded plate 14 and be sheathed on outside a punching 11; neck 151 is close to the outside of a punching 11; protective sleeve 15 has integrated neck 151 and shoulder 152, and shoulder 152 is fixed on patrix gland 13.Limited by the neck 151 of upper two punchings 12 and protective sleeve 13 respectively inside and outside a upper punching 11, therefore go up a punching 11 and not easily deflection deformation occurs, extend die life, ensured process safety.Protective sleeve 15 is fixed on patrix gland 13 by shoulder 152, and fixed form can be avoided to affect upper punching 11 profiles.

As shown in Figure 1, Figure 3 and Figure 4, upper two punching 12 outer walls offer and are parallel to two guide grooves 121 that two rush axis, article two, guide groove 121 is mutual every 180 ° on Shang Erchong 12 outer wall, breach 113 after upper punching 11 rear portions are provided with two, be clamped with a guide block 16 between each rear breach 113 and upper molded plate 14, guide block 16 part stretches in guide groove 121.Upper two punchings 12 can be stretched along a upper punching 11, but a upper punching 11 and upper two punchings 12 are all cylindric, may sway, this can bring gear member blank 5 structural aberration, and the cooperation of guide block 16 and guide groove 121 can make two punchings 12 cannot sway in flexible.Article two, guide groove 121 can make guide effect better.

As shown in Fig. 1, Fig. 6 and Fig. 7, counterdie 2 comprises mark mould 21, is sheathed on the base body die 22 outside mark mould 21 and is fixed on the counterdie gland 23 at base body die 22 back side with screw 24, base body die 22 rear portion is provided with interior step 221, mark mould 21 rear portion is provided with outer step 211, and outer step 211 is closed in interior step 221 by counterdie gland 23.When powder metallurgy die needs to stamp different marks to gear member blank 5, only need double teeming to identify mould 21 1 parts, baroque base body die 22 can continue use, therefore saves die sinking cost.

As shown in Figure 1 and Figure 7, outer step 211 outer wall is provided with the first groove 212, and interior step 221 inwall is provided with between the second groove 222, first groove 212 and the second groove 222 and accommodates a pilot pin 25.After counterdie 2 has been assembled, pilot pin 25 is closed between mark mould 21 and base body die 22, because pilot pin 25 blocks the first groove 212 and the second groove 222, so mark mould 21 and base body die 22 can not sway mutually, ensure that a collection of gear member blank 5 product design is consistent.

As shown in Fig. 3, Fig. 4 and Fig. 8, upper punching 11 forward part are cleaved into some tooth forming parts 111, adjacent tooth forming part 111 is separated by groove 112, each tooth forming part 111 top has for the plane 1111 of shaping side tooth 512 and the concave surface 1112 for shaping middle tooth 511, and concave surface 1112 opposite planar 1111 caves in.When material powder is filled into after between former 3, material powder near groove 112 place can be more loose, and understand denser away from the material powder at groove 112 place, the loose part of plane 1111 correspondence, the side tooth 512 of thinner thickness can be formed, and concave surface 1112 correspondence dense portion, can form the middle tooth 511 that thickness is thicker.

As shown in Figure 5 and Figure 8, the edge of concave surface 1112 is domatic 1113 structures.Like this when processing gear member blank 5, the edge of middle tooth 511 is inclined-plane, in turning operation, inclined-plane can reduce the collision to cutter, the consumption of cutter is reduced further, simultaneously inclined-plane can reduce the generation of burr, eliminates the treatment step of burr brushing and can reach the surface effect before process modification, saving process time and cost.

Powder metallurgical technique step comprises:

1. filling step: material powder is filled in former 3, its upper and lower two ends are compressed by patrix 1 and counterdie 2, and material powder unnecessary for middle part is extruded by plug 4;

2. pressing step: mould pressurizing, is pressed into gear member blank 5 material powder;

3. sintering step: be placed in sealing system by gear member blank 5 degreasing, then heat-agglomerating is shaping;

4. correction step: in utilizing cutter to protrude teeth portion 51 on gear member blank 5, tooth 511 end face cuts to reach demand precision.

Because upper punching 11 structure is improved, so in pressing step, the thick difference of material of plane 1111 and concave surface 1112 correspondence has adapted to the degree of tightness difference originally existed, make gear member blank 5 density of suppressing out more even, avoid loose the bringing in gear member blank 5 local and sinter the not enough problem of rear intensity; And the gear member blank 5 formed out is when carrying out the turnery processing of end face, as long as side tooth 512, turning area need not be reduced, the gear member of processing equal number for tooth 511 in protrusion, cutter consumption is less, saves a large amount of process costs.

Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. a powder metallurgy die, comprise counterdie, it is characterized in that: described counterdie comprises mark mould, is sheathed on the base body die outside described mark mould and is fixed on the counterdie gland at the described base body die back side, described base body die rear portion is provided with interior step, described mark mould rear portion is provided with outer step, and described outer step is closed in described interior step by described counterdie gland.

2. a kind of powder metallurgy die according to claim 1, is characterized in that: described outer step outer wall is provided with the first groove, and described interior stepped inner walls is provided with the second groove, accommodates a pilot pin between described first groove and the second groove.

3. a kind of powder metallurgy die according to claim 1, is characterized in that: described mould also comprises patrix, is surrounded on the former outside described upper die and lower die and passes the plug at described patrix center and counterdie center.

4. a kind of powder metallurgy die according to claim 3, is characterized in that: described patrix comprise tubular Shang Yichong, be close to described upper one punching inner side upper two punching and grip one rush patrix gland and upper molded plate.

5. a kind of powder metallurgy die according to claim 4, it is characterized in that: described upper two rush outer wall offers and be parallel to the guide groove that two rush axis, described upper one rushes rear portion is provided with rear breach, be clamped with a guide block between described rear breach and upper molded plate, described guide block part stretches in described guide groove.

6. a kind of powder metallurgy die according to claim 5, it is characterized in that: described upper two rush outer wall is provided with two guide grooves, article two, guide groove two rushes mutually every 180 ° on outer wall on described, a described upper punching correspondence be provided with two after breach, each rear indentation, there is equipped with a guide block.