CN102554581A - Manufacturing process of inner-hexagon cylindrical head shoulder screw - Google Patents
Manufacturing process of inner-hexagon cylindrical head shoulder screw Download PDFInfo
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- CN102554581A CN102554581A CN2012100643929A CN201210064392A CN102554581A CN 102554581 A CN102554581 A CN 102554581A CN 2012100643929 A CN2012100643929 A CN 2012100643929A CN 201210064392 A CN201210064392 A CN 201210064392A CN 102554581 A CN102554581 A CN 102554581A
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Abstract
The invention discloses a manufacturing process of an inner-hexagon cylindrical head shoulder screw. The manufacturing process comprises the following steps: cutting materials; intensively bunching; pre-upsetting; upsetting again and chamfering inside and outside; punching an inner hexagonal hole and molding; carrying out thread rolling; and carrying out heat treatment. By adopting the manufacturing process of an inner-hexagon cylindrical head shoulder screw, provided by the invention, the processing technology is simple and convenient; and a mould component is used for processing, so that the processing is convenient, the production efficiency is greatly improved, the concentricity, the parallelism and the luminance of each element of the processed screw are consistent, the size and precision requirements of the product are strictly ensured, and the screw strength is improved.
Description
Technical field
The present invention relates to a kind of manufacturing process of screw, relate in particular to a kind of interior hexagonal socket cap shaft shoulder screw manufacturing process.
Background technology
The manufacturing process of this invention is primarily aimed at interior hexagonal socket cap shaft shoulder screw.Interior hexagonal socket cap shaft shoulder screw comprises screw head, bar portion and thread rod part, is provided with the shaft shoulder between thread rod part and the bar portion; The processing of hexagonal socket cap shaft shoulder screw in this type of before this, the general blank of selecting suitable size earlier through turning, processes the shaft shoulder between screw head, bar portion, thread rod part and thread rod part and the bar portion, reprocesses out the external screw thread on the thread rod part.This machining period is higher, and processing loss raw material rate is higher, and exists size, concentricity, brightness, the inconsistent shortcoming of the depth of parallelism, and scrappage accounts for more than 5 ﹪, and processing cost is high, has influenced the quality and the output of product.
Summary of the invention
Technical problem to above-mentioned existence the objective of the invention is: proposed a kind of easy to processly, production efficiency is higher and can guarantee the interior hexagonal socket cap shaft shoulder screw manufacturing process of product high accuracy standard-required.
Technical solution of the present invention is achieved in that a kind of interior hexagonal socket cap shaft shoulder screw manufacturing process, and it mainly may further comprise the steps:
(1) cuts material: cut off on the station at the multistation cold forging machine, the circle material is cut to the workpiece that length meets according to volume after the formed product;
(2) intense beam: the workpiece that obtains in the step (1) is put into the thread rod part that the first station mould intense beam goes out to have the shaft shoulder;
(3) upset in advance: the workpiece that obtains in the step (2) is carried out the head processing of upsetting in advance through the second station mould;
(4) upset again and inside and outside chamfering: through the second station mould with the workpiece that obtains in the step (3) to head processings of upsetting again, then the head after upsetting is again carried out the outer face chamfering, and in head end an interior angle;
(5) towards inner hexagonal hole and moulding: through the 3rd station mould the workpiece that obtains in the step (4) is gone out inner hexagonal hole, and moulding;
(6) thread rolling: adopt the screw thread in the thread rolling machine processing lead screw portion;
(7) heat treatment: the interior hexagonal socket cap shaft shoulder screw that forms after the threading below 950 °, is quenched with quenching oil, and the cool time is 75 minutes; After the quenching workpiece is put into 380 ° and carry out tempering, tempering time is 135 minutes.
Because the utilization of technique scheme, the present invention compared with prior art has advantage:
Hexagonal socket cap shaft shoulder screw manufacturing process in of the present invention; Make processing technology simple and convenient, utilize die assembly processing, make easy to process; Improved production efficiency greatly; Concentricity, the depth of parallelism, the brightness of each part of screw that processes all are consistent, strict guarantee product size, required precision, improved screw intensity.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Accompanying drawing 1 is cut material workpiece A structure chart for hexagonal socket cap shaft shoulder screw in of the present invention;
Accompanying drawing 2 is interior hexagonal socket cap shaft shoulder screw first die worker's part B structure chart of the present invention;
Accompanying drawing 3 is interior hexagonal socket cap shaft shoulder screw second die worker's part C-structure figure of the present invention;
Accompanying drawing 4 is interior hexagonal socket cap shaft shoulder screw the 3rd die worker's part D structure chart of the present invention;
Accompanying drawing 5 is interior hexagonal socket cap shaft shoulder screw the 4th die worker's part E structure chart of the present invention;
Accompanying drawing 6 is interior hexagonal socket cap shaft shoulder screw technological process of production figure of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described.
Like accompanying drawing 1, shown in 2, in this enforcement, hexagonal socket cap shaft shoulder screw manufacturing process in the present invention, the processing of hexagonal socket cap shaft shoulder screw in it is mainly accomplished through following steps:
(1), cut material: cut off on the station at the multistation cold forging machine, adopting and cutting off mould is ∮ 7.85mm with diameter, and length is the workpiece A of 60mm, and workpiece A both ends of the surface are on average whole, no burr, bad phenomenon such as scratches, tears, referring to Fig. 1;
(2), first die worker's part B is produced in cold extrusion: the workpiece A that obtains in the step (1) is put into the thread rod part that mould one intense beam (cold extrusion) goes out to have the shaft shoulder; The diameter of thread rod part is ∮ 5.2mm, and length is 10.8mm; All the other bar portions are of a size of ∮ 7.9mm, are shaped to workpiece B, referring to Fig. 2;
(3), in advance second die worker's part C upsets out: through mould two the workpiece B that obtains in the step (2) is carried out the head processing of upsetting in advance, heading minister degree is of a size of 11mm in advance, is shaped to workpiece C, referring to Fig. 3;
(4), rammer is produced the 3rd die worker's part D with inside and outside chamfering again: through mould three the workpiece C that obtains in the step (3) is done to upset to workpiece B head again and handle; Rammer occiput diameter dimension is ∮ 12.6mm; Thickness is 5.5mm, then head is carried out the outer face chamfering, and in head end, falls an interior angle; Be shaped to workpiece D, referring to Fig. 4;
(5), towards inner hexagonal hole and moulding the 4th die worker's part E: through mould four the workpiece D that obtains in the step (4) is gone out inner hexagonal hole, and be shaped to workpiece E;
(6), thread rolling: adopt the screw thread in the thread rolling machine processing lead screw portion;
(7), heat treatment: the interior hexagonal socket cap shaft shoulder screw that forms after the threading under 950 °, is quenched with quenching oil, and the cool time is about 75～85 minutes; After the quenching workpiece put into and carry out tempering below 400 °, tempering time is 135 minutes.
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 (1)
1. hexagonal socket cap shaft shoulder screw manufacturing process in a kind is characterized in that it mainly may further comprise the steps:
(1) cuts material: cut off on the station at the multistation cold forging machine, the circle material is cut to the workpiece that length meets according to volume after the formed product;
(2) intense beam: the workpiece that obtains in the step (1) is put into the thread rod part that the first station mould intense beam goes out to have the shaft shoulder;
(3) upset in advance: the workpiece that obtains in the step (2) is carried out the head processing of upsetting in advance through the second station mould;
(4) upset again and inside and outside chamfering: through the 3rd station mould with the workpiece that obtains in the step (3) to head processings of upsetting again, then the head after upsetting is again carried out the outer face chamfering, and in head end an interior angle;
(5) towards inner hexagonal hole and moulding: through the 4th station mould the workpiece that obtains in the step (4) is gone out inner hexagonal hole, and moulding;
(6) thread rolling: adopt the screw thread in the thread rolling machine processing lead screw portion;
(7) heat treatment: the interior hexagonal socket cap shaft shoulder screw that forms after the threading below 950 °, is quenched with quenching oil, and the cool time is 75 minutes; After the quenching workpiece is put into 380 ° and carry out tempering, tempering time is 135 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100643929A CN102554581A (en) | 2012-03-13 | 2012-03-13 | Manufacturing process of inner-hexagon cylindrical head shoulder screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100643929A CN102554581A (en) | 2012-03-13 | 2012-03-13 | Manufacturing process of inner-hexagon cylindrical head shoulder screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102554581A true CN102554581A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100643929A Pending CN102554581A (en) | 2012-03-13 | 2012-03-13 | Manufacturing process of inner-hexagon cylindrical head shoulder screw |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493061A (en) * | 2014-12-01 | 2015-04-08 | 苏州工业园区新凯精密五金有限公司 | Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth |
| CN105290289A (en) * | 2015-10-28 | 2016-02-03 | 浙江名将汽配有限公司 | Manufacturing die and manufacturing method for inner hexagonal socket |
| CN108480543A (en) * | 2018-02-09 | 2018-09-04 | 冷水江天宝实业有限公司 | A kind of interior hexagonal cylindrical head is preforming for the second time to rush stick, mold and forming method |
| CN110788564A (en) * | 2019-10-07 | 2020-02-14 | 祝红梅 | Lock cylinder plunger iron sharp head processing technology |
| CN110977018A (en) * | 2019-11-22 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Broach for machining inner hexagonal connecting bolt and broaching method |
| CN113500158A (en) * | 2021-07-30 | 2021-10-15 | 常熟市标准件厂有限公司 | Cold heading process for thick-rod hexagon-head bolt |
| CN113601120A (en) * | 2021-08-16 | 2021-11-05 | 无锡阳光精机有限公司 | Machining method for electric spindle pull rod of automatic loosening broach |
| CN114871368A (en) * | 2021-12-26 | 2022-08-09 | 湖北博士隆科技有限公司 | Forming method of flow drill screw |
| CN115319000A (en) * | 2022-08-05 | 2022-11-11 | 捷固金属制品(太仓)有限公司 | Forming process of high-strength screw |
-
2012
- 2012-03-13 CN CN2012100643929A patent/CN102554581A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493061A (en) * | 2014-12-01 | 2015-04-08 | 苏州工业园区新凯精密五金有限公司 | Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth |
| CN105290289A (en) * | 2015-10-28 | 2016-02-03 | 浙江名将汽配有限公司 | Manufacturing die and manufacturing method for inner hexagonal socket |
| CN108480543A (en) * | 2018-02-09 | 2018-09-04 | 冷水江天宝实业有限公司 | A kind of interior hexagonal cylindrical head is preforming for the second time to rush stick, mold and forming method |
| CN110788564A (en) * | 2019-10-07 | 2020-02-14 | 祝红梅 | Lock cylinder plunger iron sharp head processing technology |
| CN110977018A (en) * | 2019-11-22 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Broach for machining inner hexagonal connecting bolt and broaching method |
| CN113500158A (en) * | 2021-07-30 | 2021-10-15 | 常熟市标准件厂有限公司 | Cold heading process for thick-rod hexagon-head bolt |
| CN113601120A (en) * | 2021-08-16 | 2021-11-05 | 无锡阳光精机有限公司 | Machining method for electric spindle pull rod of automatic loosening broach |
| CN114871368A (en) * | 2021-12-26 | 2022-08-09 | 湖北博士隆科技有限公司 | Forming method of flow drill screw |
| CN115319000A (en) * | 2022-08-05 | 2022-11-11 | 捷固金属制品(太仓)有限公司 | Forming process of high-strength screw |
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Application publication date: 20120711 |