CN202804051U - Bolt combination die structure - Google Patents
Bolt combination die structure Download PDFInfo
- Publication number
- CN202804051U CN202804051U CN 201220366424 CN201220366424U CN202804051U CN 202804051 U CN202804051 U CN 202804051U CN 201220366424 CN201220366424 CN 201220366424 CN 201220366424 U CN201220366424 U CN 201220366424U CN 202804051 U CN202804051 U CN 202804051U
- Authority
- CN
- China
- Prior art keywords
- die
- die sleeve
- sleeve
- bolt
- shape chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a bolt combination die structure which comprises an outer die sleeve. A middle die sleeve, a front pad and a rear cushion are sequentially disposed in the outer die sleeve from top to bottom. A die ring and a die core are sequentially disposed in the middle die sleeve from top to bottom. The die ring is provided with a bolt head cavity inside. The die core, the front pad and the rear cushion are provided with communicated shank cavities. An ejector rod is disposed in the shank cavity of the rear cushion. The structural design of the die sleeve, die ring and die core in the outer die sleeve eliminates stress concentration, so that machining and assembly are simple and convenient. The die can be used to machine 200000-300000 workpieces averagely in lifetime during cold heading of round heads of bolts, the service life of the die structure is prolonged by 40-60 times, and product precision is high and stable.
Description
Technical field
The utility model relates to a kind of bolt die, is specifically related to a kind of bolt combination cavity die structure.
Background technology
In the production process of header bolt, cold-heading round end die is the Key Mold in the cold-heading.This bolt die comprises die sleeve in the prior art, be provided with successively bolt head shape chamber in the die sleeve, bolt shank shape chamber, in bolt head shape chamber and junction, bar section shape chamber, serious stress occurs in the cold-heading process concentrate, working chamber (bolt head shape chamber and bolt shank shape chamber) is burst apart, working chamber bursts apart and accounts for the 80%-90% of whole failure mode, cause groove initial failure, service life is shorter.
The utility model content
The utility model purpose is to provide a kind of minimizing stress to concentrate in order to overcome the deficiencies in the prior art, increases substantially the die bolt combination cavity die structure in service life.
For achieving the above object, the technical solution adopted in the utility model is: a kind of bolt combination cavity die structure comprises outer die casing, die sleeve, foremast, back cushion being provided with successively in the described outer die casing under upper; Under upper, be provided with successively mould circle, core rod in the described middle die sleeve; Be provided with bolt head shape chamber in the described mould circle; Be provided with the bar section shape chamber that communicates in described core rod, foremast, the back cushion; Be provided with the top rod in the described back seat lining bar section shape chamber.
Because the utilization of technique scheme, the utility model compared with prior art has following advantages:
A kind of bolt combination cavity die structure of the utility model scheme, having eliminated stress by the structural design of middle die sleeve mould circle core rod in the outer die casing concentrates, process and assemble is simple and convenient, when the header bolt round end, die can reach 200,000/pair～300,000/pair average life, make cavity die structure improve 40 times～60 times service life, Product Precision is high and stable.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Accompanying drawing 1 is the structural representation of a kind of bolt combination cavity die structure of the present utility model;
Wherein: 1, outer die casing; 2, middle die sleeve; 3, foremast; 4, back cushion; 5, mould circle; 6, core rod; 7, top rod; 8, bolt head shape chamber; 9, bar section shape chamber.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
Accompanying drawing 1 is a kind of bolt combination cavity die structure described in the utility model, comprises outer die casing 1, die sleeve 2, foremast 3, back cushion 4 being provided with successively under upper in the described outer die casing 1; Under upper, be provided with successively mould circle 5, core rod 6 in the described middle die sleeve 2; Be provided with bolt head shape chamber 8 in the described mould circle 5; Be provided with the bar section shape chamber 9 that communicates in described core rod 6, foremast 3, the back cushion 4; Be provided with top rod 7 in the described back cushion 4 bar section shape chambeies.Described core rod 6 can use the Hardmetal materials of hard high-wearing feature, and mould circle, middle die sleeve 2 adopt the 60Si2Mn steel to make.
Below only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the utility model rights protection scope.
Claims (1)
1. a bolt combination cavity die structure comprises outer die casing, it is characterized in that: die sleeve, foremast, back cushion being provided with successively under upper in the described outer die casing; Under upper, be provided with successively mould circle, core rod in the described middle die sleeve; Be provided with bolt head shape chamber in the described mould circle; Be provided with the bar section shape chamber that communicates in described core rod, foremast, the back cushion; Be provided with the top rod in the described back seat lining bar section shape chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366424 CN202804051U (en) | 2012-07-27 | 2012-07-27 | Bolt combination die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366424 CN202804051U (en) | 2012-07-27 | 2012-07-27 | Bolt combination die structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202804051U true CN202804051U (en) | 2013-03-20 |
Family
ID=47862995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366424 Expired - Fee Related CN202804051U (en) | 2012-07-27 | 2012-07-27 | Bolt combination die structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202804051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141060A (en) * | 2016-08-25 | 2016-11-23 | 厦门同恒金属有限公司 | A kind of cold forging punch die of the little component of rod category of molding major part |
-
2012
- 2012-07-27 CN CN 201220366424 patent/CN202804051U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141060A (en) * | 2016-08-25 | 2016-11-23 | 厦门同恒金属有限公司 | A kind of cold forging punch die of the little component of rod category of molding major part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20130727 |