CN205042903U - Cold extrusion die of car brake vacuum servo pump rotor - Google Patents
Cold extrusion die of car brake vacuum servo pump rotor Download PDFInfo
- Publication number
- CN205042903U CN205042903U CN201520631615.4U CN201520631615U CN205042903U CN 205042903 U CN205042903 U CN 205042903U CN 201520631615 U CN201520631615 U CN 201520631615U CN 205042903 U CN205042903 U CN 205042903U
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- mold core
- pump rotor
- servo pump
- vacuum servo
- lower mold
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- Braking Arrangements (AREA)
Abstract
The utility model relates to an automobile manufacturing technical field especially relates to a cold extrusion die of car brake vacuum servo pump rotor. Including shrink ring and mold core, the shrink ring includes outer lane and centre circle, mold core, centre circle and outer lane set gradually and the coaxial heart of three from inside to outside, the mold core includes by last mold core that sets gradually under to and mold core down, it is the loop configuration with lower mold core to go up the mold core, going up the mold core intra -annular and being provided with mobilizable upper punch, the lower mould in -core is provided with the low punch. The utility model discloses can be vacuum servo pump rotor, the intensity and the density of the vacuum servo pump rotor that the assurance obtained with extruded article integrated into one piece.
Description
Technical field
The utility model relates to field of automobile, particularly relates to a kind of Cold Extruding Die of braking automobile vacuum servo pump rotor.
Background technology
Vacuum servo pump rotor is brake system of car vital part.Stay-in-grade rotor, can reduce driving accident incidence, improves vehicle security.Because rotor flat recess and cross recess dimension precision requirement high, conventional forging is very difficult, and forge hot decarburization is serious, and do not ensure dimensional accuracy, aft-loaded airfoil is wasted time and energy, inefficiency, and cost is very high; Cold forging demoulding difficulty, and after the demoulding, size is easily out of shape.At present, this rotor many employings powder metallurgy is made.Although powder metallurgy rotor flat recess and cross recess dimensionally stable, but exist always density not high, containing the not high defect of micro-crack, intensity, wearing and tearing, problems of crack is easily there is in use procedure, cause there is no vacuum, lose brake power-assisted, in case of emergency easily serious catastrophic failure occurs.
Utility model content
The purpose of this utility model is the Cold Extruding Die proposing a kind of braking automobile vacuum servo pump rotor, can by one-body molded for extrusion be vacuum servo pump rotor, ensure the intensity of vacuum servo pump rotor that obtains and density.
For reaching this object, the utility model by the following technical solutions:
A kind of Cold Extruding Die of braking automobile vacuum servo pump rotor, comprise shrink ring and core rod, described shrink ring comprises outer ring and centre circle, described core rod, centre circle and outer ring set gradually and the coaxial heart of three from inside to outside, described core rod comprises the upper mold core and lower mold core that set gradually from top to bottom, described upper mold core and lower mold core are loop configuration, be provided with mobilizable upper punch, be provided with low punch in lower mold core in described upper mold core ring.
As preferably, described lower mold core inwall is also provided with groove, described low punch part inlay is in groove.
As preferably, described upper mold core, lower mold core and low punch adopt Hardmetal materials to make.
As preferably, described lower mold core and low punch adopt interference fit to inlay to be connected.
The utility model beneficial effect:
The utility model is by arranging shrink ring, and this circle stress comprises coaxial outer ring and centre circle, and arranges low punch, can by one-body molded for extrusion be vacuum servo pump rotor, ensure the intensity of vacuum servo pump rotor that obtains and density.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Cold Extruding Die of the braking automobile vacuum servo pump rotor that the utility model provides;
Fig. 2 is the partial sectional view of the lower mold core that the utility model provides.
In figure:
1, shrink ring; 2, core rod; 11, outer ring; 12, centre circle; 21, upper mold core; 22, lower mold core; 23, groove; 3, low punch; 4, upper punch; 5, profiled member.
Detailed description of the invention
In order to make those skilled in the art understand the technical solution of the utility model better, further illustrate the technical solution of the utility model below in conjunction with accompanying drawing by detailed description of the invention.
Please refer to Fig. 1, the structural representation of the Cold Extruding Die of the braking automobile vacuum servo pump rotor that Fig. 1 the utility model provides.
The utility model discloses a kind of Cold Extruding Die of braking automobile vacuum servo pump rotor, this Cold Extruding Die can by one-body molded for vacuum servo pump rotor, ensure that density and the intensity of vacuum booster pump suit the requirements, it comprises shrink ring 1 and core rod 2, described shrink ring 1 comprises outer ring 11 and centre circle 12, described core rod 2, centre circle 12 and outer ring 11 set gradually and the coaxial heart of three from inside to outside, described core rod 2 comprises the upper mold core 21 and lower mold core 22 that set gradually from top to bottom, described upper mold core 21 and lower mold core 22 are loop configuration, mobilizable upper punch 4 is provided with in described upper mold core 21 ring, low punch 3 is provided with in lower mold core 22.
Please further refer to the partial sectional view that Fig. 2, Fig. 2 are the lower mold core that the utility model provides.
Wherein lower mold core 22 inwall is also provided with groove 23, described low punch 3 part inlay is in groove 23.Can ensure that vacuum servo pump rotor low punch 3 in forming process can not move down like this.In the present embodiment, as preferably, described lower mold core 22 adopts interference fit to inlay with low punch 3 to be connected.
More specifically, described upper mold core 21, lower mold core 22 and low punch 3 adopt Hardmetal materials to make.The hardness of Hardmetal materials can reach 90-92HRA, and more specifically, this Hardmetal materials is REA35, REA70.
Circular annular form blank is adopted in the present embodiment, blank diameter is 40mm, the internal diameter of blank external diameter and die core rod 2 has the gap of 0.1 ~ 0.2mm, put into die blowing district, move downward behind upper punch 4 and die location, at ambient temperature, a forward extrusion is done to blank and backward extrusion combined shaping obtains profiled member 5, forward extrusion to be shaped flat recess by low punch 3, and backward extrusion to be shaped cross recess by upper punch 4; As described in Figure 1, the left part of center line be blank to be processed time state, right part is the state after blank is processed into profiled member.
The utility model is by arranging shrink ring, and this circle stress comprises coaxial outer ring and centre circle, and arranges low punch, can by one-body molded for extrusion be vacuum servo pump rotor, ensure the intensity of vacuum servo pump rotor that obtains and density.
Note, above display and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not by the restriction of above-mentioned embodiment; what describe in above-mentioned embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall within the scope of claimed the utility model, and claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. the Cold Extruding Die of a braking automobile vacuum servo pump rotor, it is characterized in that, comprise shrink ring (1) and core rod (2), described shrink ring (1) comprises outer ring (11) and centre circle (12), described core rod (2), centre circle (12) and outer ring (11) set gradually and the coaxial heart of three from inside to outside, described core rod (2) comprises the upper mold core (21) and lower mold core (22) that set gradually from top to bottom, described upper mold core (21) and lower mold core (22) are loop configuration, mobilizable upper punch (4) is provided with in described upper mold core (21) ring, low punch (3) is provided with in lower mold core (22).
2. the Cold Extruding Die of braking automobile vacuum servo pump rotor according to claim 1, it is characterized in that described lower mold core (22) inwall is also provided with groove (23), described low punch (3) part inlay is in groove (23).
3. the Cold Extruding Die of braking automobile vacuum servo pump rotor according to claim 1 and 2, is characterized in that, described upper mold core (21), lower mold core (22) and low punch (3) adopt Hardmetal materials to make.
4. the Cold Extruding Die of braking automobile vacuum servo pump rotor according to claim 3, is characterized in that, described lower mold core (22) adopts interference fit to inlay with low punch (3) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520631615.4U CN205042903U (en) | 2015-08-20 | 2015-08-20 | Cold extrusion die of car brake vacuum servo pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520631615.4U CN205042903U (en) | 2015-08-20 | 2015-08-20 | Cold extrusion die of car brake vacuum servo pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205042903U true CN205042903U (en) | 2016-02-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520631615.4U Active CN205042903U (en) | 2015-08-20 | 2015-08-20 | Cold extrusion die of car brake vacuum servo pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205042903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001341A (en) * | 2016-06-17 | 2016-10-12 | 宾科汽车紧固件（昆山）有限公司 | Cold forging process for rotor and reverse hole extrusion die |
| CN108555123A (en) * | 2018-05-07 | 2018-09-21 | 江苏太平洋齿轮传动有限公司 | A kind of High-precision Deep Hole structure of extrusion |
-
2015
- 2015-08-20 CN CN201520631615.4U patent/CN205042903U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001341A (en) * | 2016-06-17 | 2016-10-12 | 宾科汽车紧固件（昆山）有限公司 | Cold forging process for rotor and reverse hole extrusion die |
| CN108555123A (en) * | 2018-05-07 | 2018-09-21 | 江苏太平洋齿轮传动有限公司 | A kind of High-precision Deep Hole structure of extrusion |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |