CN1338346A - Technology for manufacturing ballscrew gear - Google Patents
Technology for manufacturing ballscrew gear Download PDFInfo
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- CN1338346A CN1338346A CN 01127285 CN01127285A CN1338346A CN 1338346 A CN1338346 A CN 1338346A CN 01127285 CN01127285 CN 01127285 CN 01127285 A CN01127285 A CN 01127285A CN 1338346 A CN1338346 A CN 1338346A
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Abstract
A technology for machining ballscrew set including ballscrew and ballnut is disclosed. The steps for machining ballscrew includes hot straightening of raw material, turning spiral thread, machining rolling way with CBN cutter, coarse straightening, quenching central hole, vibration grinding, shaping rolling way, grinding spiral thread, and vibration grinding of spiral rolling way. The steps for machining ballnut include vacuum quenching, milling internal spiral rolling way, grinding external circumference, grinding internal spiral thread, and shaping. Its advantages include less investment, easy machining, and low cost.
Description
The present invention relates to the drive technology in the field of mechanical technique, is a kind of technology of making lead screw pair, specifically, is a kind of novel technique of making ball screw assembly.
The parts that ball screw assembly, is made up of ball-screw, ball nut and ball.It can change rectilinear motion with rotatablely moving into, perhaps rectilinear motion is changed into rotatablely moving.Ball screw assembly, have transmission efficiency height, long working life, motion do not have steadily, synchronously creep, do not have backlass, friction characteristics good, to features such as the adaptability of environment are strong, be the crucial transmission and the setting element of all kinds of Digit Control Machine Tools, electronic product, be widely used in every field already, classified as " the adhoc basis spare product " of emphasis development by country.In the producer of present domestic manufacturing ball-screw byproduct, process route has than big difference, but has many problems on product quality, makes ball screw assembly, in addition and invests huge, input-output ratio is little, has greatly restricted the large-scale production of rolling elements such as ball screw assembly.
The general technology of ball-screw processing:
Blanking-→ alignment-→ size-→ heat treatment-→ repair center lapping-→ cylindrical grinding-→ screw thread mill grinding threads of lead screw-→ keyseat or square body-→ pincers-→ destressing handles-→ thread grinding (half accurate mill raceway)-→ destressing handles-→ center lapping-→ accurate cylindricalo grinding-→ thread grinding (accurate grinding, fall imperfect tooth 1/4 circle in two ends)-→ 45 ° on thread grinding reverse angle threads and top.
There is defective:
1, leading screw alignment alignment at normal temperatures, stress increases, because material is GCr15, easily produces resilience.
2, the circle of the turning requirement height of beating, prolong process time relatively.
3, directly mid frequency induction hardening, particularly long lead screw (draw ratio 〉=25) are flexible, and tempering time is shorter, causes the leading screw quenching hardness inhomogeneous easily, and stress is difficult for removing, though handle through freezing typing, original stress is not removed thoroughly as yet.
4, corase grind is cut screw thread, and because of threaded portion quenching hardness height, cutting output is big, causes the cutting time long, and consumable material is many, very easily flexural deformation, and because of cutting output is big, the temperature height descends the leading screw quenching hardness.
5, raceway cuts shape and adopts the helical angle under nominal helical angle notion and the actual working state to have any different, and easily causes the forward and reverse torsional forces in assembling back not of uniform size.
6, the Technology for Heating Processing program is more, and the time is longer, the effect instability.
7, the screw thread raceway of accurate grinding, precision and processing and debugging level because of lathe itself easily produce the raceway ripple, and the minor cycle, the high-grade screw thread raceway of grinding is difficult for ensureing.
The general technology of ball nut processing:
Blanking-→ car-→ mill-→ pincers-→ heat treatment-→ internal grinding-→ cylindricalo grinding-→ mill internal thread raceway (thick, essence)
The defective that exists:
1, nut quenches, and the back is thick, correct grinding internal thread raceway, and grinding allowance is big, the cycle is long, efficient is low.
2, the grinding of interior circle, cylindrical substep is difficult for coaxially, and operation requires high.
3, yielding, the cracking, imperfect of the molten or oily medium quenching of salt is generally adopted in heat treatment, and the shade deviation of grinding skin not.
4, the screw thread raceway of nut cuts shape and adopts nominal helical angle notion, has any different with the helical angle under the actual working state, easily causes the forward and reverse torsional forces difference in assembling back to strengthen.
5, the drilling hole machine tool requirement is very high, generally uses machining center or CNC milling machine, the equipment price costliness, and working (machining) efficiency is not high.
The purpose of this invention is to provide a kind of small investment, instant effect, processing easily, fall cost, low sale price, help large tracts of land to promote the use of the manufacturing ballscrew gear technology of rolling elements such as ball screw assembly.
Technical solution of the present invention is: a kind of manufacturing ballscrew gear technology, comprise the processing of ball-screw processing and ball nut, ball-screw processing is based on existing blanking, alignment, turning, heat treatment, center lapping, cylindrical grinding, keyseat or square body, thread grinding, fall that the imperfect tooth 1/4 in two ends encloses, accurate cylindricalo grinding and threaded tip chamfering; Ball nut processing is based on blanking, car, mills, grinds internal thread, heat treatment, cylindricalo grinding, mill internal thread raceway, it is characterized in that:
Ball-screw processing:
A, blank be in hot alignment down,
B, leading screw be rough turn helicla flute before quenching,
C, raceway processing adopt the CBN cutter to process,
Adopt thick alignment destressing before D, the heat treatment earlier,
E, centre bore adopt flame to harden, and adopt vibro-grinding,
F, raceway cut shape and adopt working screw angle notion to process,
G, thread grinding are located grinding screw thread raceway with cylindrical,
H, vibro-grinding screw thread raceway;
Ball nut processing:
A, nut adopt vacuum hardening technology,
B, mill roughing internal thread raceway with whirlwind,
C, employing spring born work arbor tensioner grinding cylindrical,
" soft chuck " positioning and clamping is adopted in D, internal thread grinding,
E, employing nut rolling way working screw horn cupping are to cutting the processing of shape notion.
Leading screw described in the present invention is pressed the rough turn helicla flute of leading screw helical pitch before quenching; Nut is after with vacuum hardening, again through freezing and tempering.Leading screw processing heat treatment is adopted: thick alignment destressing-→ mid frequency induction hardening-→ tempering-→ smart alignment-→ destressing-→ freezing treatment process route.
The process route of ball-screw described in the present invention processing is: blanking-→ modified alignment-→ the outer garden of car screw thread-→ heat treatment-→ center lapping-→ cylindrical grinding-→ keyseat or square body etc.-→ pincers-→ centre bore hardens-→ center lapping-→ thread grinding (half correct grinding)-→ fall imperfect tooth 1/4 circle in two ends-→ center lapping-→ 0.5 * 45 ° of accurate cylindricalo grinding and threaded tip chamfering-→ screw thread raceway vibro-grinding.
The process route of ball nut described in the present invention processing is: blanking-→ car-→ mill-→ whirlwind mill interior raceway-→ the mill internal thread-→ pincers, brill, heat treatment (vacuum hardening, freezing, tempering)-→ cylindricalo grinding-→ mill internal thread raceway.
Described in the present invention after processing ball-screw and ball nut, carry out following assembly technology again:
A, secondary assembling,
B, employing ultrasonic cleaning technology,
C, employing assembling torquemeter are controlled unloaded moment of torsion,
Electronic bistrique and diamond grinding head are adopted in the finishing of D, nut rolling way transition region.
Advantage of the present invention is: utilize less investment; scale produces high-quality ball-screw byproduct; improve input-output ratio; with the difficult point in the simple and easy way elimination processes; make it to reach small investment, instant effect, processing easily, the purpose of cost, low sale price is fallen, promote the use of rolling element such as ball screw assembly, for large tracts of land and opened up a new approach.The major part of technology is not adopt in the domestic producer of the same trade among the present invention, particularly leading screw, the domestic especially original creation of nut processing technology.Not only economize expensive Digit Control Machine Tool and machining center, and can increase substantially the crudy and the manufacturing batch of part.All kinds of ball-screw byproducts that adopt the present invention to produce, the all-mass index all can reach and surpass the GB/T17587.3--1998 standard.The comparable general technology of production efficiency improves more than 30%.Manufacturing cycle shortens 1/3 than general technology.Investment in fixed assets reduces 40%.The batch machining steady quality, the percentage of A-class goods can reach 99%.
The present invention is described in further detail below in conjunction with embodiment:
Ball-screw New Machining Technology technology:
Blanking-→ modified alignment-→ the outer garden of car screw thread-→ heat treatment-→ center lapping-→ cylindrical grinding-→ keyseat or square body etc.-→ pincers-→ centre bore hardens-→ center lapping-→ thread grinding (half correct grinding)-→ fall imperfect tooth 1/4 circle in two ends-→ center lapping-→ 0.5 * 45 ° of accurate cylindricalo grinding and threaded tip chamfering-→ screw thread raceway vibro-grinding.
Process characteristic:
The linearity of blank before A, the strict control turning, blank makes Stress Control in more among a small circle in hot alignment destressing down.
Rough turn helicla flute (pressing the leading screw helical pitch) before B, leading screw quench, raceway part rigidity layer is darker after the mid frequency induction hardening, the cooling when slightly opening helicla flute and also helping cylindricalo grinding.
The processing of CBN cutter is adopted in C, raceway processing, and is efficiently unannealed, reduces cost.
D, heat treatment adopt thick alignment destressing-→ mid frequency induction hardening-→ tempering-→ smart alignment-→ destressing-→ freezing treatment process route, make leading screw stress in the road grinding of back drop to minimumly, effectively keep leading screw indeformable.
E, centre bore flame harden, and adopt vibro-grinding, and is efficient, precision is good, is furnished with strong location universal center, and the long handle carrier can improve the precision (cycle circularity etc.) of cylindricalo grinding, external screw thread grinding.
F, raceway cut shape and adopt working screw angle notion (generally adopting nominal helical angle notion in the industry) to scrape look inspection work contact angle with steel ball, have improved the stability of lead screw pair performance, save expensive detection equipment.
Special-purpose fixed point centre frame is adopted in G, thread grinding, with cylindrical location grinding screw thread raceway, guarantees that raceway and cylindrical are coaxial, and effectively improves the tapering precision of leading screw.
H, vibro-grinding raceway can effectively be eliminated the ripple of screw thread raceway, the minor cycle, improve the helical pitch precision, middle footpath tapering, roughness etc.
Ball nut New Machining Technology technology:
Blanking-→ car-→ mill-→ whirlwind mill interior raceway-→ the mill internal thread-→ pincers, brill, heat treatment (vacuum hardening, freezing, tempering)-→ cylindricalo grinding-→ mill internal thread raceway
Process characteristic:
A, nut adopt vacuum hardening technology, reduce the surplus of the back internal thread grinding of quenching to greatest extent, have created condition for adopting CBN emery wheel or low-stress grinding, have improved the quality (surperficial perfection) of nut and have improved production efficiency.
B, mill roughing internal thread raceway, substitute turning and internal thread machining, improve work efficiency and reduce cost with whirlwind.
C, employing spring born work arbor tensioner grinding cylindrical can reduce in advance to internal grinding.
D, internal thread grinding adopt " soft chuck " positioning and clamping, can improve the displacement accuracy in batch machining nut rolling way and reverser hole, and the axiality of raceway and cylindrical can be cancelled " the synchronous mill " operation after the assembling.
E, employing nut rolling way working screw horn cupping are scraped the look inspection to cutting a shape notion with steel ball, effectively control contact angle, improve the performance of the rotating torque difference of lead screw pair.
F, reverser hole and skewer pore are reequiped mechanical positioner on plain-milling machine, make point, position Stroke Control, satisfy the processing request of hole site tolerance, save great amount of investment.
Ball screw assembly, assembling new technology characteristics:
Quality is guaranteed in A, secondary assembling.
B, employing ultrasonic cleaning technology, the cleannes of raising product.
C, employing assembling torquemeter are controlled unloaded moment of torsion.
Electronic bistrique and diamond grinding head are adopted in the finishing of D, nut rolling way transition region.
Claims (6)
1, a kind of manufacturing ballscrew gear technology, comprise the processing of ball-screw processing and ball nut, ball-screw processing is based on existing blanking, alignment, turning, heat treatment, center lapping, cylindrical grinding, keyseat or square body, thread grinding, fall that the imperfect tooth 1/4 in two ends encloses, accurate cylindricalo grinding and threaded tip chamfering; Ball nut processing is based on blanking, car, mills, grinds internal thread, heat treatment, cylindricalo grinding, mill internal thread raceway, it is characterized in that:
Ball-screw processing:
A, blank be in hot alignment down,
B, leading screw be rough turn helicla flute before quenching,
C, raceway processing adopt the CBN cutter to process,
Adopt thick alignment destressing before D, the heat treatment earlier,
E, centre bore adopt flame to harden, and adopt vibro-grinding,
F, raceway cut shape and adopt working screw angle notion to process,
G, thread grinding are located grinding screw thread raceway with cylindrical,
H, vibro-grinding screw thread raceway;
Ball nut processing:
A, nut adopt vacuum hardening technology,
B, mill roughing internal thread raceway with whirlwind,
C, employing spring born work arbor tensioner grinding cylindrical,
" soft chuck " positioning and clamping is adopted in D, internal thread grinding,
E, employing nut rolling way working screw horn cupping are to cutting the processing of shape notion.
2, manufacturing ballscrew gear technology according to claim 1 is characterized in that: leading screw is pressed the rough turn helicla flute of leading screw helical pitch before quenching; Nut is after with vacuum hardening, again through freezing and tempering.
3, manufacturing ballscrew gear technology according to claim 1 and 2 is characterized in that: leading screw processing heat treatment is adopted: thick alignment destressing-→ mid frequency induction hardening-→ tempering-→ smart alignment-→ destressing-→ freezing treatment process route.
4, manufacturing ballscrew gear technology according to claim 1 and 2 is characterized in that: the process route of ball-screw processing is:
Blanking-→ modified alignment-→ the outer garden of car screw thread-→ heat treatment-→ center lapping-→ cylindrical grinding-→ keyseat or square body etc.-→ pincers-→ centre bore hardens-→ center lapping-→ thread grinding (half correct grinding)-→ fall imperfect tooth 1/4 circle in two ends-→ center lapping-→ 0.5 * 45 ° of accurate cylindricalo grinding and threaded tip chamfering-→ screw thread raceway vibro-grinding.
5, manufacturing ballscrew gear technology according to claim 1 and 2 is characterized in that: the process route of ball nut processing is: blanking-→ car-→ mill-→ whirlwind mill interior raceway-→ the mill internal thread-→ pincers, brill, heat treatment (vacuum hardening, freezing, tempering)-→ cylindricalo grinding-→ mill internal thread raceway.
6, manufacturing ballscrew gear technology according to claim 1 and 2 is characterized in that: after processing ball-screw and ball nut, carry out following assembly technology again:
A, secondary assembling,
B, employing ultrasonic cleaning technology,
C, employing assembling torquemeter are controlled unloaded moment of torsion,
Electronic bistrique and diamond grinding head are adopted in the finishing of D, nut rolling way transition region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01127285 CN1256211C (en) | 2001-09-29 | 2001-09-29 | Technology for manufacturing ballscrew gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01127285 CN1256211C (en) | 2001-09-29 | 2001-09-29 | Technology for manufacturing ballscrew gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1338346A true CN1338346A (en) | 2002-03-06 |
| CN1256211C CN1256211C (en) | 2006-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01127285 Expired - Fee Related CN1256211C (en) | 2001-09-29 | 2001-09-29 | Technology for manufacturing ballscrew gear |
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| Country | Link |
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| CN (1) | CN1256211C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413646C (en) * | 2005-11-18 | 2008-08-27 | 唐中学 | Bend prevention method of ball screw shaft in machining process |
| CN101856781A (en) * | 2010-05-19 | 2010-10-13 | 常州大学 | Precision ball screw manufacturing method |
| CN101966645A (en) * | 2010-09-19 | 2011-02-09 | 浙江得利亚自动化制造有限公司 | Production method for high-precision rolling ball screw |
| CN102728999A (en) * | 2011-04-07 | 2012-10-17 | 温永林 | Double-bolt-head screw machining process |
| CN103429381A (en) * | 2010-08-04 | 2013-12-04 | 日本精工株式会社 | Ball screw and method for manufacturing ball screw nut |
| CN104084651A (en) * | 2014-08-01 | 2014-10-08 | 丽水市创峰科技有限公司 | Linear module, machining method and machining devices applied to machining method |
| CN107877095A (en) * | 2017-10-31 | 2018-04-06 | 宁波更大集团有限公司 | The processing technology of ball-screw nut |
| CN108000079A (en) * | 2017-12-27 | 2018-05-08 | 苏州欧鹏自动化设备有限公司 | A kind of processing technology of leading screw |
| CN109803790A (en) * | 2016-10-18 | 2019-05-24 | 日本精工株式会社 | The manufacturing method of raceway groove processing method, bearing, ball-screw apparatus, machine and vehicle |
| CN109940355A (en) * | 2019-03-29 | 2019-06-28 | 上海格尔汽车科技发展有限公司 | A kind of processing method of ball-screw electric power steering machine rack gear |
| CN110578781A (en) * | 2019-09-17 | 2019-12-17 | 李敬宇 | method for processing lead screw or roller of small and miniature planetary roller lead screw pair |
-
2001
- 2001-09-29 CN CN 01127285 patent/CN1256211C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100413646C (en) * | 2005-11-18 | 2008-08-27 | 唐中学 | Bend prevention method of ball screw shaft in machining process |
| CN101856781A (en) * | 2010-05-19 | 2010-10-13 | 常州大学 | Precision ball screw manufacturing method |
| CN103429381B (en) * | 2010-08-04 | 2015-08-26 | 日本精工株式会社 | The manufacture method of nut for ball screw and ball-screw |
| CN103429381A (en) * | 2010-08-04 | 2013-12-04 | 日本精工株式会社 | Ball screw and method for manufacturing ball screw nut |
| CN101966645A (en) * | 2010-09-19 | 2011-02-09 | 浙江得利亚自动化制造有限公司 | Production method for high-precision rolling ball screw |
| CN101966645B (en) * | 2010-09-19 | 2012-05-23 | 浙江得利亚自动化制造有限公司 | Production method for high-precision rolling ball screw |
| CN102728999A (en) * | 2011-04-07 | 2012-10-17 | 温永林 | Double-bolt-head screw machining process |
| CN104084651A (en) * | 2014-08-01 | 2014-10-08 | 丽水市创峰科技有限公司 | Linear module, machining method and machining devices applied to machining method |
| CN109803790A (en) * | 2016-10-18 | 2019-05-24 | 日本精工株式会社 | The manufacturing method of raceway groove processing method, bearing, ball-screw apparatus, machine and vehicle |
| CN107877095A (en) * | 2017-10-31 | 2018-04-06 | 宁波更大集团有限公司 | The processing technology of ball-screw nut |
| CN107877095B (en) * | 2017-10-31 | 2020-04-10 | 宁波更大集团有限公司 | Machining process of ball screw nut |
| CN108000079A (en) * | 2017-12-27 | 2018-05-08 | 苏州欧鹏自动化设备有限公司 | A kind of processing technology of leading screw |
| CN109940355A (en) * | 2019-03-29 | 2019-06-28 | 上海格尔汽车科技发展有限公司 | A kind of processing method of ball-screw electric power steering machine rack gear |
| CN110578781A (en) * | 2019-09-17 | 2019-12-17 | 李敬宇 | method for processing lead screw or roller of small and miniature planetary roller lead screw pair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1256211C (en) | 2006-05-17 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Right Machinery Group Co., Ltd. Assignor: Zhang Guoliang|Zhou Jianwei Contract fulfillment period: 2001.12.1 to 2009.12.1 contract change Contract record no.: 2008320000248 Denomination of invention: Technology for manufacturing ballscrew gear Granted publication date: 20060517 License type: Exclusive license Record date: 2008.9.22 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2001.12.1 TO 2009.12.1 Name of requester: JIANGSU RUIANTE MACHINE GROUP CO.,LTD. Effective date: 20080922 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060517 Termination date: 20150929 |
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| EXPY | Termination of patent right or utility model |