CN102581558A - Machining process of long and thin screw - Google Patents

Machining process of long and thin screw Download PDF

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Publication number
CN102581558A
CN102581558A CN2012100432237A CN201210043223A CN102581558A CN 102581558 A CN102581558 A CN 102581558A CN 2012100432237 A CN2012100432237 A CN 2012100432237A CN 201210043223 A CN201210043223 A CN 201210043223A CN 102581558 A CN102581558 A CN 102581558A
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China
Prior art keywords
base
requirement
size
screw
elongated
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CN2012100432237A
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CN102581558B (en
Inventor
王相波
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GUIZHOU JINGLI HANGTAI TECHNOLOGY Co Ltd
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GUIZHOU JINGLI HANGTAI TECHNOLOGY Co Ltd
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Priority to CN201210043223.7A priority Critical patent/CN102581558B/en
Publication of CN102581558A publication Critical patent/CN102581558A/en
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Abstract

The invention relates to a machining process of a long and thin screw. The machining process comprises the following steps of: preparing materials, forging, turning, carrying out thread rolling, carrying out demagnetization treatment, carrying out surface treatment, assembling components, packaging and storing in a warehouse. The coaxiality and the straightness of the long and thin screw machined by the machining process are good, the product quality is stable, the machining cost is reduced and the production period is shortened, so that the machining process is very suitable for production in a large batch.

Description

A kind of processing technology of elongated screw
Technical field
The invention belongs to mechanical manufacturing field, particularly a kind of processing technology of elongated screw.
Background technology
In the used standard component in fields such as Aeronautics and Astronautics, boats and ships, civil aviaton, military spacecraft, locking strip is the indispensable annex commonly used of electronic integrated circuit modularized design.It is installed in electronic circuit board (printed board) edge; Locking strip is the type of attachment a kind of commonly used of electronic circuit board; Come the distance between pressure strip and the guide rail through pressure change self thickness, daughter board forms firm the connection with motherboard, is convenient to Fast Installation, dismounting; Have good ground connection performance and environmental suitability, be widely used in fields such as Aeronautics and Astronautics, boats and ships, civil aviaton, military spacecraft.Elongated screw in this product, major diameter ratio is bigger, and minimum diameter is d 2=2, this has just proposed strict demand to machining; While D 1Very high with the axiality requirement of D, lean on machining to guarantee comparatively difficulty, therefore at aspects such as selection, processing technology, hotlist processing, all to receive strict restriction.
Summary of the invention
The technical problem that the present invention will solve; Be according to according to locking strip performance and handling characteristics; On the basis of the electronic integrated circuit modularization wiring board locking strip in fields such as summarizes my state Aeronautics and Astronautics, boats and ships, civil aviaton; Fully use for reference the experience of the exploitation manufacturing of external Related product, a kind of new processing technology of developing.
A kind of processing technology of elongated screw is following:
(1) get the raw materials ready: 1Cr18Ni9Ti presses the GJB/T2294-1995 inspection;
(2) rammer system: through the system of upsetting, the axiality of elongated shank of screw portion and head reaches the 0.1mm requirement, on screw head and end face, stays the allowance of 0.5～0.8mm respectively; R0.3 reaches requirement, before the system of upsetting, will try base, and the threaded shank size is upset and is made as D 1, the system quality of guaranteeing to upset;
(3) car:
1. after satisfying above-mentioned requirements, elongated screw head of car and end guarantee H, D dimensional requirement, and flat threaded shank end face of tune and chamfering guarantee length L and L 1, base is tried in cutting thread base footpath earlier, stays mill amount 0.08～0.12mm;
2. car neck d 2Size is stayed mill amount 0.08～0.12mm;
(4) base is tried in thread grinding base footpath earlier; Neck d 2Size reaches requirement;
(5) thread rolling, the d size reaches requirement;
(6) demagnetization is handled;
(7) surface treatment: clean;
(8) assembled;
(9) packing;
(10) warehouse-in.
The elongated screw axiality and the linearity that adopt said method to process are good, and constant product quality has reduced processing cost simultaneously, has shortened the production cycle, are fit to very much produce in batches.
Description of drawings
Fig. 1 is a product structure sketch map of the present invention;
The specific embodiment
According to instructions for use; The elongated screw of this product satisfies the characteristics of being convenient to Fast Installation, dismounting; Have good ground connection performance and environmental suitability,, combine practical work experience again through consulting associated materials and material handbook; The 1Cr18Ni9Ti material is adopted in decision, because the intensity of 1Cr18Ni9Ti material and hardness are better.General draw ratio d 2The processing of/L>=10 is exactly machining slender shaft, the maximum draw ratio d of the elongated screw of this product 2/ L=66.The minimum diameter of elongated screw is d 2=2mm, D simultaneously 1With the axiality of D be 0.1mm.Draw ratio is big more, can produce serious cutter relieving phenomenon in the process, makes part deformation, thereby causes D 1Be difficult to guarantee with the axiality of D and the linearity of shank of screw portion, therefore can not adopt conventional machining process to process.D 1Surface roughness 1.6, and must not there be obvious flaw on the surface, and each size all has the certain precision requirement, so after the factor of comprehensive each side, confirmed that the processing technology of elongated screw is following:
(1) get the raw materials ready: 1Cr18Ni9Ti presses the GJB/T2294-1995 inspection;
(2) rammer system: through the system of upsetting, the axiality of elongated shank of screw portion and head reaches the 0.1mm requirement, on screw head and end face, stays the allowance of 0.5～0.8mm respectively; R0.3 reaches requirement, before the system of upsetting, will try base, and the threaded shank size is upset and is made as D 1, the system quality of guaranteeing to upset;
(3) car:
1. after satisfying above-mentioned requirements, elongated screw head of car and end guarantee H, D dimensional requirement, and flat threaded shank end face of tune and chamfering guarantee length L and L 1, base is tried in cutting thread base footpath earlier, stays mill amount 0.08～0.12mm;
2. car neck d 2Size is stayed mill amount 0.08～0.12mm;
(4) base is tried in thread grinding base footpath earlier; Neck d 2Size reaches requirement;
(5) thread rolling, the d size reaches requirement;
(6) demagnetization is handled;
(7) surface treatment: clean;
(8) assembled;
(9) packing;
(10) warehouse-in.
Adopt the advantage of above-mentioned processing technology:
1. material property satisfies the serviceability of design.
2. the system of upsetting processing arrangement is reasonable, reduced the scale error of machining multiple clamping and generation thereof, and axiality has satisfied designing requirement.
3. process type because screw head and shank of screw portion once upset, in the linearity of axiality that guarantees screw head and bar portion and shank of screw portion, also shortened the process-cycle of product greatly, won the time for obtaining more client.
4. the high conformity of product size, steady quality.

Claims (1)

1. the processing technology of an elongated screw is characterized in that, the processing technology of said elongated screw is following:
(1) get the raw materials ready: 1Cr18Ni9Ti presses the GJB/T2294-1995 inspection;
(2) rammer system: through the system of upsetting, the axiality of elongated shank of screw portion and head reaches the 0.1mm requirement, on screw head and end face, stays the allowance of 0.5～0.8mm respectively; R0.3 reaches requirement, before the system of upsetting, will try base, and the threaded shank size is upset and is made as D 1, the system quality of guaranteeing to upset;
(3) car:
1. after satisfying above-mentioned requirements, elongated screw head of car and end guarantee H, D dimensional requirement, and flat threaded shank end face of tune and chamfering guarantee length L and L 1, base is tried in cutting thread base footpath earlier, stays mill amount 0.08～0.12mm;
2. car neck d 2Size is stayed mill amount 0.08～0.12mm;
(4) base is tried in thread grinding base footpath earlier; Neck d 2Size reaches requirement;
(5) thread rolling, the d size reaches requirement;
(6) demagnetization is handled;
(7) surface treatment: clean;
(8) assembled;
(9) packing;
(10) warehouse-in.
CN201210043223.7A 2012-02-24 2012-02-24 Machining process of long and thin screw Active CN102581558B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210043223.7A CN102581558B (en) 2012-02-24 2012-02-24 Machining process of long and thin screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210043223.7A CN102581558B (en) 2012-02-24 2012-02-24 Machining process of long and thin screw

Publications (2)

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CN102581558A true CN102581558A (en) 2012-07-18
CN102581558B CN102581558B (en) 2015-05-20

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CN201210043223.7A Active CN102581558B (en) 2012-02-24 2012-02-24 Machining process of long and thin screw

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CN (1) CN102581558B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744577A (en) * 2012-07-23 2012-10-24 鹏驰五金制品有限公司 Stainless steel heavy type expansion screw rod and molding process thereof
CN103170804A (en) * 2013-03-20 2013-06-26 常州凯翔医用不锈钢有限公司 Manufacturing technique of medical fastening screw
CN103170805A (en) * 2013-03-22 2013-06-26 常州凯旺金属材料有限公司 Biomedical stainless steel processing technique and method of manufacturing bolt and precise axel steel thereof
CN103223572A (en) * 2013-04-11 2013-07-31 漳州鑫一达五金电子有限公司 Anchoring nail processing method
CN103962809A (en) * 2014-05-21 2014-08-06 贵州航锐航空精密零部件制造有限公司 Manufacturing method for 17-4PH screw
CN107322237A (en) * 2017-06-22 2017-11-07 贵州精立航太科技有限公司 A kind of processing technology of high-temperature alloy bolt
CN111843392A (en) * 2020-07-30 2020-10-30 贵州精立航太科技有限公司 Machining process of core rod of self-plugging rivet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341469A (en) * 1943-02-20 1944-02-08 Newall Archibald Park Method of manufacturing waisted bolts
JPH08309472A (en) * 1995-05-11 1996-11-26 Daido Steel Co Ltd Manufacture of precipitation hardening type stainless steel bolt
CN1443946A (en) * 2003-04-17 2003-09-24 南京汽车集团有限公司 Production process of high strength bolt with above 1300MPa
CN101797685A (en) * 2010-04-08 2010-08-11 浙江裕泰紧固件制造有限公司 Process for manufacturing high-strength bolt
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341469A (en) * 1943-02-20 1944-02-08 Newall Archibald Park Method of manufacturing waisted bolts
JPH08309472A (en) * 1995-05-11 1996-11-26 Daido Steel Co Ltd Manufacture of precipitation hardening type stainless steel bolt
CN1443946A (en) * 2003-04-17 2003-09-24 南京汽车集团有限公司 Production process of high strength bolt with above 1300MPa
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
CN101797685A (en) * 2010-04-08 2010-08-11 浙江裕泰紧固件制造有限公司 Process for manufacturing high-strength bolt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
徐天明: "细长杆螺钉顶镦工艺", 《机械工人.热加工》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744577A (en) * 2012-07-23 2012-10-24 鹏驰五金制品有限公司 Stainless steel heavy type expansion screw rod and molding process thereof
CN102744577B (en) * 2012-07-23 2015-11-25 鹏驰五金制品有限公司 A kind of stainless steel heavy type expansion screw rod and moulding process thereof
CN103170804A (en) * 2013-03-20 2013-06-26 常州凯翔医用不锈钢有限公司 Manufacturing technique of medical fastening screw
CN103170805A (en) * 2013-03-22 2013-06-26 常州凯旺金属材料有限公司 Biomedical stainless steel processing technique and method of manufacturing bolt and precise axel steel thereof
CN103223572A (en) * 2013-04-11 2013-07-31 漳州鑫一达五金电子有限公司 Anchoring nail processing method
CN103962809A (en) * 2014-05-21 2014-08-06 贵州航锐航空精密零部件制造有限公司 Manufacturing method for 17-4PH screw
CN107322237A (en) * 2017-06-22 2017-11-07 贵州精立航太科技有限公司 A kind of processing technology of high-temperature alloy bolt
CN111843392A (en) * 2020-07-30 2020-10-30 贵州精立航太科技有限公司 Machining process of core rod of self-plugging rivet

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