CN202606764U - Pre-upsetting mold for pan-headed plum blossom groove self-tapping locking screw - Google Patents
Pre-upsetting mold for pan-headed plum blossom groove self-tapping locking screw Download PDFInfo
- Publication number
- CN202606764U CN202606764U CN 201220117508 CN201220117508U CN202606764U CN 202606764 U CN202606764 U CN 202606764U CN 201220117508 CN201220117508 CN 201220117508 CN 201220117508 U CN201220117508 U CN 201220117508U CN 202606764 U CN202606764 U CN 202606764U
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- stamping
- die
- plum blossom
- upsetting
- rod
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- Expired - Fee Related
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Abstract
The utility model relates to a pre-upsetting mold for a pan-headed plum blossom groove self-tapping locking screw; the pre-upsetting mold comprises a stamping die, a fixed die, a stamping shell, a stamping rod seat and a stamping rod, wherein the fixed die is used together with the stamping die; a stamping hole and a cylindrical cavity with a circular arc chamfer angle are formed in the stamping die; a boss cavity is connected between the stamping hole and the cylindrical cavity; the stamping rod seat is arranged above the stamping die; one end of the stamping rod is fixed at the bottom of the stamping rod seat; the other end of the stamping rod is inserted into the stamping hole; and a cutting cavity and rod part cavity are formed in the fixed die from the end surface in sequence. According to the utility model, through the adoption of a scheme, the head part of a product is pre-upset by the mold, so that the deformation of the head part of the product is controlled within a range of maximum deformation and accuracy and quality of the product in the follow-up procedure are guaranteed; simplicity and convenience in production are achieved; continuous product can be carried out; the machining procedure is not needed; the production efficiency is greatly increased; and the production cost is reduced.
Description
Technical field
The utility model relates to a kind of mould, relates in particular to a kind of coiled hair plum blossom groove self-tapping lock screw mould of upsetting in advance.
Background technology
Coiled hair plum blossom groove self-tapping lock screw comprises screw head, bar portion, is provided with the plum blossom groove in the said screw head.This workpiece of processing mainly adopts two kinds of processing methods at present, and the one,, adopting Cutting Process processing, this processing technology not only production efficiency is lower, waste material and the very difficult formed product quality that guarantees; The 2nd; Adopt the processing of cold-heading molding technology; Owing to adopt the technological processing of cold-heading molding to need to be controlled at below 3 times according to volume after the formed product and according to the steady-state deformation cold-heading ratio of stipulating in the cold heading technique scientific principle opinion; Calculate distortion size and deflection in the preparatory rammer operation, the product deformed shape in the operation of upsetting in advance, structure directly affect precision and quality that the postorder product is out of shape.
The utility model content
The utility model purpose is to provide a kind of operation deflection of will upsetting in advance to be controlled at maximum deformation quantity for the deficiency that overcomes prior art and guarantee product postorder formed precision and the coiled hair plum blossom groove self-tapping lock screw of the quality mould of upsetting in advance.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of coiled hair plum blossom groove self-tapping lock screw mould of upsetting in advance, and the fixed die that comprises punch die, is used with punch die is towards shell, dash the rod seat, dash rod; The cylindrical cavity that is provided with punching in the said punch die and has circular arc chamfering; Be connected with the boss shape chamber between on said punching and the cylindrical cavity; The said top that is arranged on punch die towards the rod seat; Said being fixed on towards an excellent end dashed excellent bottom, and the other end inserts in the punching; Said fixed die is provided with cutting shape chamber, bar portion shape chamber successively from end face.
Preferably, said cutting shape chamber comprises the back taper chamber.
Preferably, the vertex of a cone angle in said back taper chamber is 30 °.
Because the utilization of technique scheme, the utility model compared with prior art has advantage:
The coiled hair plum blossom groove self-tapping lock screw of the utility model scheme mould of upsetting in advance through this mould product head of upsetting out in advance, is controlled in the scope of maximum deformation quantity product leading edge deformation amount; And product precision and quality in the postorder operation have been guaranteed; Produce simple and conveniently, and can carry out continuity production, need not to carry out machining processes; Improve production efficiency greatly, reduced production cost.
Description of drawings
Below in conjunction with accompanying drawing the utility model technical scheme is described further:
Accompanying drawing 1 is upset the in advance structural representation of mould of the coiled hair plum blossom groove self-tapping lock screw of the utility model;
Accompanying drawing 2 is upset the in advance structure enlarged drawing in cutting shape chamber in the mould of the coiled hair plum blossom groove self-tapping lock screw of the utility model;
Wherein: 1, punch die; 2, fixed die; 3, towards shell; 4, dash the rod seat; 5, dash rod; 6, cylindrical cavity; 7, boss shape chamber; 8, cutting shape chamber; 9, back taper chamber; 10, second cylindrical cavity; 11, bar portion shape chamber; 12, product knock pin.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.
Accompanying drawing 1,2 is the described a kind of coiled hair plum blossom groove self-tapping lock screw of the utility model mould of upsetting in advance, the fixed die 2 that comprises punch die 1, is used with punch die 1, towards shell 3, dash rod seat 4, dash rod 5; The cylindrical cavity 6 that is provided with punching and has circular arc chamfering in the said punch die 1; Be connected with boss shape chamber 7 between on said punching and the cylindrical cavity 6; The said top that is arranged on punch die 1 towards rod seat 4; Said rod 5 one ends that dash are fixed on the bottom that dashes rod seat 4, and the other end inserts in the punching; Said fixed die 2 is provided with cutting shape chamber 8, bar portion shape chamber 11 successively from end face; Said cutting shape chamber 8 is made up of the back taper chamber 9 and second cylindrical cavity 10, and the diameter of second cylindrical cavity 10 is slightly less than bar portion shape chamber 11, and the vertex of a cone angle in back taper chamber 9 is 30 °; The product knock pin of using when in the bottom of fixed die 2, also being provided with product stripping 12.
Below only be the concrete exemplary applications of the utility model, the protection domain of the 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 (3)
1. coiled hair plum blossom groove self-tapping lock screw mould of upsetting in advance, comprise punch die, with the fixed die that punch die is used, it is characterized in that: also comprise towards shell, dash the rod seat, dash rod; The cylindrical cavity that is provided with punching in the said punch die and has circular arc chamfering; Be connected with the boss shape chamber between on said punching and the cylindrical cavity; The said top that is arranged on punch die towards the rod seat; Said being fixed on towards an excellent end dashed excellent bottom, and the other end inserts in the punching; Said fixed die is provided with cutting shape chamber, bar portion shape chamber successively from end face.
2. a kind of coiled hair plum blossom groove self-tapping lock screw according to claim 1 mould of upsetting in advance, it is characterized in that: said cutting shape chamber comprises the back taper chamber.
3. a kind of coiled hair plum blossom groove self-tapping lock screw according to claim 2 mould of upsetting in advance, it is characterized in that: the vertex of a cone angle in said back taper chamber is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220117508 CN202606764U (en) | 2012-03-27 | 2012-03-27 | Pre-upsetting mold for pan-headed plum blossom groove self-tapping locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220117508 CN202606764U (en) | 2012-03-27 | 2012-03-27 | Pre-upsetting mold for pan-headed plum blossom groove self-tapping locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202606764U true CN202606764U (en) | 2012-12-19 |
Family
ID=47340496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220117508 Expired - Fee Related CN202606764U (en) | 2012-03-27 | 2012-03-27 | Pre-upsetting mold for pan-headed plum blossom groove self-tapping locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202606764U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624201A (en) * | 2013-11-11 | 2014-03-12 | 梧州恒声电子科技有限公司 | High line diameter ratio T iron head punching and shaping combined die |
| CN104550606A (en) * | 2014-12-17 | 2015-04-29 | 浙江名将汽配有限公司 | Cold-heading die for manufacturing external-hexangular ball-head pin of automobile |
-
2012
- 2012-03-27 CN CN 201220117508 patent/CN202606764U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624201A (en) * | 2013-11-11 | 2014-03-12 | 梧州恒声电子科技有限公司 | High line diameter ratio T iron head punching and shaping combined die |
| CN104550606A (en) * | 2014-12-17 | 2015-04-29 | 浙江名将汽配有限公司 | Cold-heading die for manufacturing external-hexangular ball-head pin of automobile |
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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: 20121219 Termination date: 20130327 |