CN102825431B - Machining method of high-abrasion resistance valve core - Google Patents

Machining method of high-abrasion resistance valve core Download PDF

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Publication number
CN102825431B
CN102825431B CN201210334750.3A CN201210334750A CN102825431B CN 102825431 B CN102825431 B CN 102825431B CN 201210334750 A CN201210334750 A CN 201210334750A CN 102825431 B CN102825431 B CN 102825431B
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China
Prior art keywords
processing
cylindrical
workpiece
grinding
centre bore
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Expired - Fee Related
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CN201210334750.3A
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Chinese (zh)
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CN102825431A (en
Inventor
吴晓霞
叶义书
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KAIXING HYDRAULIC DRIVE MACHINERY CO Ltd GUIZHOU
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KAIXING HYDRAULIC DRIVE MACHINERY CO Ltd GUIZHOU
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Priority to CN201210334750.3A priority Critical patent/CN102825431B/en
Publication of CN102825431A publication Critical patent/CN102825431A/en
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Publication of CN102825431B publication Critical patent/CN102825431B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a machining method of a high-abrasion resistance valve core. The method comprises a material preparing step, a turning step, a heat treatment step, a clinching step, a grinding step, a clinching step, a surface treatment step, a grinding step, a clinching step and the like. The valve core machined by the method is abrasion resistant, light in weight and stable in quality, and can meet the using performance of a precise control valve.

Description

A kind of processing method of high-abrasion resistance valve core
Technical field
The present invention relates to a kind of processing method of high-abrasion resistance valve core, belong to field of machining.
Background technology
Spool is the important parts in control valve, in order to improve wearability and the manufacturability of spool, spool material selects steel usually, but steel spool certainly focus in fine control valve the performance affecting control valve, particularly bulky valve core, the performance affecting control valve is larger, causes control valve cisco unity malfunction.Devise a kind of high-abrasion resistance valve core, the material of its spool is aluminium alloy, lightweight for this reason, and surperficial wearability is after treatment equivalent to the steel part hardened.This kind of spool is wear-resisting, lightweight, thus meets the serviceability of control valve, stabilizes product quality.
Summary of the invention
The technical problem to be solved in the present invention is: the processing method providing a kind of lightweight, high-abrasion resistance valve core, by processing method of the present invention, the spool of processing is wear-resisting, lightweight, steady quality, thus meets the serviceability of control valve.
The present invention is achieved in that it comprises the following steps:
The first, get the raw materials ready: aluminium alloy bar;
The second, Vehicle Processing: each shelves cylindrical of Vehicle Processing and cannelure, and drill centers, cylindrical φ d1, cylindrical φ d2 are processed as d1max+ (0.15 ~ 0.35) mm, d2max+ (0.15 ~ 0.35) mm respectively, and all the other are machined to requirement;
Three, heat treatment: artificial aging;
Four, pincers processing: repair and grind two ends centre bore 60 ° of conical surfaces;
Five, mill processing: with heart carrier clamping cylindrical φ d2, the Double ejection pin of lathe holds out against two ends centre bore, heart carrier drives workpiece to rotate, cylindrical grinding φ d1, be processed as d1min-(0.01 ~ 0.02) mm, tolerance is h6, use the same method cylindrical grinding φ d2, is processed as d2min-(0.01 ~ 0.02) mm, tolerance is h6;
Six, pincers processing: repair burr clearly, sharp edge rounding is not more than 0.05mm;
7th, surface treatment: hard anodizing, require to determine hard anodizing layer thickness by design document requirement hard anodizing layer thickness and grinding, according to size and the structure of workpiece, the electrode of surface processing equipment connects with conducting electricity good wire or metal bar with between workpiece, with screw, wire or metal bar are fixed to the electrode union end place of surface processing equipment, wire with workpiece union end is made paper clip type, then connect with the non-mating surface of workpiece, or the metal bar with workpiece union end is made external screw thread, connect with the internal thread of workpiece termination again,
Eight, mill processing: with heart carrier clamping cylindrical φ d2, the Double ejection pin of lathe holds out against two ends centre bore, and heart carrier drives workpiece to rotate, cylindrical grinding φ d1 is to requiring, ensure that cylindricity e1, the cylindrical grinding φ d2 that uses the same method are to requiring, ensure cylindricity e2 and axiality φ f simultaneously simultaneously;
Nine, pincers processing: repair burr clearly, sharp edge rounding is not more than 0.05mm.
Compared with prior art, the spool of the present invention's processing is wear-resisting, lightweight, steady quality, can meet the serviceability of fine control valve completely.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the spool that need process
Detailed description of the invention
Embodiments of the invention: be described for Fig. 1.
1, get the raw materials ready: select 6A02-T6GB/T3191-1998 aluminium alloy bar.
2, Vehicle Processing:
(1) hard three-jaw folder cylindrical φ d2 end, car one end face, brill, car centre bore and screwed hole, tailstock center holds out against centre bore, rough turn cylindrical φ d1, made allowance.
(2) soft three-jaw presss from both sides car end cylindrical φ d1, car other end, drill centers, and tailstock center holds out against centre bore, rough turn cylindrical φ d2, made allowance.
(3) soft three-jaw folder cylindrical φ d1, tailstock center holds out against centre bore, half fine turning outer circle φ d2, and cylindrical stays allowance, and the cannelure of car φ d2 section is to requiring.Use the same method the cannelure of turning φ d1 and this section thereof.(4) main shaft three-jaw presss from both sides a thimble, and revises thimble 60 ° of conical surfaces.With heart carrier clamping cylindrical φ d2, lathe Double ejection pin holds out against two ends centre bore, and heart carrier drives workpiece to rotate, and fine turning outer circle φ d1, is processed as d1max+ (0.15 ~ 0.35) mm.Use the same method turning φ d2, is processed as d2max+ (0.15 ~ 0.35) mm.Surplus is 0.15mm ~ 0.35mm, chooses according to work piece cylindrical and length.
3, heat treatment: artificial aging, temperature 155 ± 5 DEG C, insulation 7h ~ 8h.
4, pincers processing: repair and grind two ends centre bore 60 ° of conical surfaces.
5, mill processing: with heart carrier clamping cylindrical φ d2, the Double ejection pin of lathe holds out against two ends centre bore, and heart carrier drives workpiece to rotate, and cylindrical grinding φ d1, is processed as d1min-(0.01 ~ 0.02) mm, tolerance is h6.Use the same method cylindrical grinding φ d2, is processed as d2min-(0.01 ~ 0.02) mm, tolerance is h6.
6, pincers processing: repair burr clearly, sharp edge rounding is not more than 0.05mm.
7, surface treatment: hard anodizing, thicknesses of layers is 0.04mm ~ 0.06mm.The electrode of surface processing equipment connects with conducting electricity good alumite alloy bar with between workpiece, with screw, aluminium alloy bars is fixed to the electrode union end place of surface processing equipment, aluminium alloy bars with workpiece union end is made external screw thread, and connects with the internal thread of workpiece termination.
8, mill processing: with heart carrier clamping cylindrical φ d2, the Double ejection pin of lathe holds out against two ends centre bore, and heart carrier drives workpiece to rotate, and cylindrical grinding φ d1, to requiring, ensures cylindricity e1 simultaneously.Using the same method cylindrical grinding φ d2 to requiring, ensureing cylindricity e2 and axiality φ f simultaneously.
9, pincers processing: repair burr clearly, sharp edge rounding is not more than 0.05mm.

Claims (1)

1. a processing method for high-abrasion resistance valve core, is characterized in that: it comprises following technological process:
The first, get the raw materials ready: aluminium alloy bar;
The second, Vehicle Processing: each shelves cylindrical of Vehicle Processing and cannelure, and drill centers, cylindrical φ d1, cylindrical φ d2 are processed as d1max+ (0.15 ~ 0.35) mm, d2max+ (0.15 ~ 0.35) mm respectively, and all the other are machined to requirement;
Three, heat treatment: artificial aging;
Four, pincers processing: repair and grind two ends centre bore 60 ° of conical surfaces;
Five, mill processing: with heart carrier clamping cylindrical φ d2, the Double ejection pin of lathe holds out against two ends centre bore, heart carrier drives workpiece to rotate, cylindrical grinding φ d1, be processed as d1min-(0.01 ~ 0.02) mm, tolerance is h6, use the same method cylindrical grinding φ d2, is processed as d2min-(0.01 ~ 0.02) mm, tolerance is h6;
Six, pincers processing: repair burr clearly, sharp edge rounding is not more than 0.05mm;
7th, surface treatment: hard anodizing, require to determine hard anodizing layer thickness by design document requirement hard anodizing layer thickness and grinding, according to size and the structure of workpiece, the electrode of surface processing equipment connects with conducting electricity good wire or metal bar with between workpiece, with screw, wire or metal bar are fixed to the electrode union end place of surface processing equipment, wire with workpiece union end is made paper clip type, then connect with the non-mating surface of workpiece, or the metal bar with workpiece union end is made external screw thread, connect with the internal thread of workpiece termination again,
Eight, mill processing: with heart carrier clamping cylindrical φ d2, the Double ejection pin of lathe holds out against two ends centre bore, and heart carrier drives workpiece to rotate, cylindrical grinding φ d1 is to requiring, ensure that cylindricity e1, the cylindrical grinding φ d2 that uses the same method are to requiring, ensure cylindricity e2 and axiality φ f simultaneously simultaneously;
Nine, pincers processing: repair burr clearly, sharp edge rounding is not more than 0.05mm.
CN201210334750.3A 2012-09-07 2012-09-07 Machining method of high-abrasion resistance valve core Expired - Fee Related CN102825431B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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CN102825431B true CN102825431B (en) 2015-01-07

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WO2015013970A1 (en) * 2013-08-02 2015-02-05 恒川国际股份有限公司 Water tap water-control spool and method for manufacturing same
CN103506814B (en) * 2013-09-27 2015-09-02 巨隆集团芜湖兴隆液压有限公司 A kind of preparation method of core assembly
CN103711934B (en) * 2013-12-31 2017-01-18 玉环县勃特铜业有限公司 Valve core sleeve in fast-opening valve core and machining method of valve core sleeve
CN104057247A (en) * 2014-05-30 2014-09-24 太仓美晶机械制造有限公司 Manufacturing method for precise valve element of hydraulic servo valve
CN106151140B (en) * 2015-04-28 2018-08-14 徐工集团工程机械股份有限公司 A kind of Environment-friendlywear-resistant wear-resistant spool and hydraulic valve
CN105033570A (en) * 2015-06-02 2015-11-11 无锡阳工机械制造有限公司 Machining method for valve element of reversing valve
CN105458627B (en) * 2015-12-12 2017-12-22 贵州凯星液力传动机械有限公司 A kind of processing method of high-quality interchangeability thin-walled valve element
CN105537885A (en) * 2016-03-03 2016-05-04 布志刚 Machining method of valve element
CN106181242A (en) * 2016-07-26 2016-12-07 贵州凯星液力传动机械有限公司 A kind of automobile-used down hill retarder controls the processing method of bar
CN107160116A (en) * 2017-07-25 2017-09-15 苏州市鑫渭阀门有限公司 Carbon steel valve element preparation method for petroleum pipeline
CN107598494A (en) * 2017-09-28 2018-01-19 中国航发动力股份有限公司 A kind of processing method of spiral elasticity back-up ring
CN110814647B (en) * 2019-11-04 2021-04-13 中国万宝工程有限公司 Control valve core and machining method thereof

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JP2752536B2 (en) * 1991-08-08 1998-05-18 昭和アルミニウム株式会社 Manufacturing method of aluminum valve spool
JP2004271823A (en) * 2003-03-07 2004-09-30 Ricoh Co Ltd Contactless proximity electrostatic charging roller and method for forming its surface
CN1319699C (en) * 2003-12-19 2007-06-06 广东工业大学 Precision machining apparatus and method for axial symmetry rotary curve
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CN101342654A (en) * 2008-08-29 2009-01-14 中国航空工业标准件制造有限责任公司 High-accuracy thin and long circular axis processing method
CN101518866A (en) * 2009-04-01 2009-09-02 扬中市扬子铝加工厂 Method for manufacturing an aluminum magnesium alloy bridge frame
CN102189376B (en) * 2011-03-22 2013-03-06 南车戚墅堰机车有限公司 Novel cam shaft machining process
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