CN102601290A - Pre-tampering die for pan head torx self-tapping locking screw - Google Patents
Pre-tampering die for pan head torx self-tapping locking screw Download PDFInfo
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- CN102601290A CN102601290A CN2012100823067A CN201210082306A CN102601290A CN 102601290 A CN102601290 A CN 102601290A CN 2012100823067 A CN2012100823067 A CN 2012100823067A CN 201210082306 A CN201210082306 A CN 201210082306A CN 102601290 A CN102601290 A CN 102601290A
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- punching
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- rod
- tampering
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Abstract
The invention discloses a pre-tampering die for a pan head torx self-tapping locking screw, which comprises a punching die, a fixed die which is used by combining with the punching die, a punching shell, a punching rod base and a punching rod. The punching die is provided with a punching hole and a cylindrical cavity with an arc chamfering internally. A bump cavity is connected between the punching hole and the cylindrical cavity. The punching rod base is arranged above the punching die. One end of the punching rod is fixed at the bottom of the punching rod base while the other end is inserted into the punching hole. The fixed die is orderly provided with a cutting cavity and a rod cavity from the end surface. In the scheme of the invention, the head of the product is pre-tampered by the die so that the head deformation of the product is controlled within a range of the maximum deformation and the precision and quality of the product in subsequent steps are ensured. The pre-tampering die for the pan head torx self-tapping locking screw is simple and convenient to produce, and can be continuously produced without the machining step, thereby greatly improving the production efficiency and reducing the production cost.
Description
Technical field
The present invention relates to a kind of mould, relate 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.
Summary of the invention
Technical problem to above-mentioned existence the objective of the invention is: proposed a kind of operation deflection of will upsetting in advance and be controlled at maximum deformation quantity 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.
Technical solution of the present invention is achieved in that 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 present invention compared with prior art has advantage:
The coiled hair plum blossom groove self-tapping lock screw of the present invention 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 technical scheme of the present invention is described further:
Accompanying drawing 1 is upset the in advance structural representation of mould of coiled hair plum blossom groove self-tapping lock screw of the present invention;
Accompanying drawing 2 is upset the in advance structure enlarged drawing in cutting shape chamber in the mould of coiled hair plum blossom groove self-tapping lock screw of the present invention;
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 the present invention is described.
Accompanying drawing 1,2 is a kind of coiled hair plum blossom groove self-tapping lock screw of the present invention 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.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
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 |
|---|---|---|---|
| CN2012100823067A CN102601290A (en) | 2012-03-27 | 2012-03-27 | Pre-tampering die for pan head torx self-tapping locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100823067A CN102601290A (en) | 2012-03-27 | 2012-03-27 | Pre-tampering die for pan head torx self-tapping locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102601290A true CN102601290A (en) | 2012-07-25 |
Family
ID=46519273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100823067A Pending CN102601290A (en) | 2012-03-27 | 2012-03-27 | Pre-tampering die for pan head torx self-tapping locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102601290A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764843A (en) * | 2012-08-15 | 2012-11-07 | 浙江中航来宝精工科技有限公司 | Method and die for processing bolt |
| CN102921865A (en) * | 2012-11-10 | 2013-02-13 | 三门通顺铆钉有限公司 | Trimming die of free-tempering limiting pin and forming process of trimming die |
| CN109175185A (en) * | 2018-08-21 | 2019-01-11 | 湖南铂固标准件制造有限公司 | A kind of method of interior hexagonal cylindrical headdress flower tooth bolt chamfer machining molding die and processing bolt |
-
2012
- 2012-03-27 CN CN2012100823067A patent/CN102601290A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764843A (en) * | 2012-08-15 | 2012-11-07 | 浙江中航来宝精工科技有限公司 | Method and die for processing bolt |
| CN102764843B (en) * | 2012-08-15 | 2016-03-02 | 浙江中航来宝精工科技有限公司 | The processing method of bolt and mould therefor |
| CN102921865A (en) * | 2012-11-10 | 2013-02-13 | 三门通顺铆钉有限公司 | Trimming die of free-tempering limiting pin and forming process of trimming die |
| CN102921865B (en) * | 2012-11-10 | 2015-10-28 | 三门通顺铆钉有限公司 | Exempt from punch die and the moulding process thereof of modified spacer pin |
| CN109175185A (en) * | 2018-08-21 | 2019-01-11 | 湖南铂固标准件制造有限公司 | A kind of method of interior hexagonal cylindrical headdress flower tooth bolt chamfer machining molding die and processing bolt |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |