CN101224540A - Ball screw processing method - Google Patents
Ball screw processing method Download PDFInfo
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- CN101224540A CN101224540A CNA2008100656551A CN200810065655A CN101224540A CN 101224540 A CN101224540 A CN 101224540A CN A2008100656551 A CNA2008100656551 A CN A2008100656551A CN 200810065655 A CN200810065655 A CN 200810065655A CN 101224540 A CN101224540 A CN 101224540A
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Abstract
The invention discloses a processing method of a ball bearing screw, comprising the steps of: 1) a rolling (cold rolling) forming is adopted by arc thread of a leading screw; 2) the external round of the arc thread of the leading screw is grinded; 3) the external round of the arc thread of the leading screw which is grinded is taken as a benchmark to fabricate and/or grind a central hole of the leading screw; 4) the shaft end of the leading screw is processed; 5) the external round of the arc thread of the leading screw which is grinded is taken as a location benchmark and the central hole is taken as an auxiliary benchmark to grind the arc thread raceway of the leading screw. The invention has the advantages that the rolling (cold rolling) forming metal material has little consumption, low energy consumption, simple technological process, and high production efficiency; the arc thread part of the leading screw has high surface performance, etc. Furthermore, the precision of the leading screw which has been rolled (cold rolled) and formed can achieve the international standard of ISO3408-3P2 by the grinding process of the arc thread raceway.
Description
[technical field]
The present invention relates to Machining Technology, relate in particular to a kind of processing method of ball screw.
[background technology]
Ball wire bar pair is the transmission device that rectilinear motion and gyration are changed mutually.When screw mandrel rotated, ball is not only rotation but also along the raceway shuttling movement, its friction loss is little in raceway, the transmission efficiency height, and motion steadily is difficult for producing low speed jerking motion, transmission accuracy height; Behind the pretension, can eliminate the gap fully between the feed screw nut, improve transmission rigidity.In view of above characteristics, ball wire bar pair receives the concern of all conglomeraties day by day.
As important components in the ball wire bar pair, the threaded portion of ball screw can adopt machining and cold rolling (cold rolling no cutting) processing.Ball screw circular arc rolling screw-threads (cold rolling no cutting) processing is for machining, and metal material consumption is few, and technical process is simple, and production efficiency can improve several times.The cementation zone that roll extrusion (cold rolling) forms on screw mandrel circular arc screw thread raceway also helps wearability and the fatigue strength that improves circular arc screw thread raceway.Because can be simply, low cost, expeditiously screw mandrel circular arc screw thread is carried out Precision Machining, roll extrusion (cold rolling) screw mandrel replaces the main flow that the grinding screw mandrel becomes ball screw gradually.
Yet for roll extrusion (cold rolling), the machining accuracy of grinding is higher.The precision of the ball screw of grinding can reach P3 level above (ISO3408-3 international standard), and the highest accuracy class of ball screw of roll extrusion (cold rolling) processing can only reach P5 level (ISO3408-3 international standard).Though the ball screw of roll extrusion (cold rolling) processing has the production efficiency height, high conformity, remarkable advantages such as energy consumption is low has limited it and has used more widely because of the helical pitch accuracy class is not high enough.
[summary of the invention]
The technical problem to be solved in the present invention provides that a kind of metal material consumption is few, and technical process is simple, and production efficiency is higher, the ball screw processing method that wire rod thread helical pitch precision is high.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is that a kind of ball screw processing method may further comprise the steps:
101) screw mandrel circular arc screw thread adopts cold rolling moulding;
102) grinding wire rod thread cylindrical;
103) the wire rod thread cylindrical with grinding is the centre bore that screw mandrel was made and/or ground to benchmark;
104) processing screw mandrel axle head;
105) the screw mandrel circular arc screw thread cylindrical with grinding is the location benchmark, and centre bore is an auxiliary base grinding screw mandrel circular arc screw thread raceway.
Above-described ball screw processing method, the most handy centerless grinder grinding wire rod thread cylindrical in step 102.
Above-described ball screw processing method preferably also comprises alignment procedure before step 102 grinding wire rod thread cylindrical.
Above-described ball screw processing method can also comprise alignment procedure before step 103 is made the centre bore at screw mandrel two ends.
Above-described ball screw processing method can also comprise wire rod thread surface hardening and screw mandrel alignment procedure before step 105 grinding screw mandrel circular arc screw thread raceway.
Above-described ball screw processing method can be used at least 2 centre frames or the V-arrangement carriage positioning support as the wire rod thread cylindrical in step 105.Wherein, 2 centre frames or V-arrangement bearing bracket are arranged at the wire rod thread two ends.
Above-described ball screw processing method, described is auxiliary base with the centre bore, and the end work that is processed ball screw is axially with radially spacing, and the other end is only made axial limiting, does not do radially spacing.Can locate at lathe drive end centering and with regular centre at processed ball screw, the end face of the other end of ball screw is centering not, with the top axial limiting of ball.
Above-described ball screw processing method, when step 105 grinding screw mandrel circular arc screw thread raceway, emery wheel is a benchmark with the raceway in screw thread stage casing preferably with respect to the axial location of screw thread raceway.
The screw thread of screw mandrel of the present invention adopts roll extrusion (cold rolling) moulding, thereby possesses the major advantage of roll extrusion (cold rolling) screw mandrel moulding: metal material consumption is few, and energy consumption is low, technical process is simple, the production efficiency height, the surface property of screw mandrel circular arc threaded portion is higher, the high conformity of screw mandrel.The present invention carries out the grinding moulding in order to improve the helical pitch precision of screw mandrel to screw mandrel circular arc screw thread raceway.The present invention is first grinding wire rod thread cylindrical before the screw mandrel circular arc screw thread raceway of grinding roll extrusion (cold rolling) moulding, and the wire rod thread cylindrical with grinding is the location benchmark then, and centre bore is an auxiliary base grinding screw mandrel circular arc screw thread raceway.Like this, not only reduce the grinding allowance of screw thread raceway grinding to greatest extent, saved processing cost, also kept the surface property that on screw mandrel circular arc screw thread raceway, forms because of rolling screw-threads (cold rolling) simultaneously as much as possible.By the grinding of screw thread raceway, can reach the international standard of ISO3408-3P2 level fully through the screw mandrel precision of roll extrusion (cold rolling) moulding.
[description of drawings]
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is the front view of the embodiment of the invention 1.
[specific embodiment]
The manuscript of the ball screw of ball screw processing method embodiment processing of the present invention as shown in Figure 1.Ball screw processing method embodiment 1 of the present invention mainly comprises following operation:
1. screw mandrel circular arc rolling screw-threads (cold rolling) moulding: 6 to 8 meters long cylindrical steel bars are carried out screw mandrel circular arc rolling screw-threads (cold rolling), and the dimensional tolerance of wire rod thread cylindrical is+0.02mm that cylindricity tolerance is 0.015mm; Circular arc screw thread raceway 300mm helical pitch tolerance is ± 0.05mm that circular arc screw thread raceway is not more than 0.01mm for the symmetry error of wire rod thread cylindrical axis.
2. cut off: reserve the turning surplus by the length of finished product screw mandrel, 6 to 8 meters long screw mandrels are cut off blanking with cutting machine.
3. heat treatment: the position that need carry out turning processing to screw mandrel bar two ends utilizes heating generator to carry out high frequency annealing, makes its hardness between HB180 to HB220, is convenient to subsequent turning processing.
4. hot alignment: carry out hot alignment on straightener, make the screw mandrel bar, radially beating in the 500mm length range is not more than 0.015mm, and radially beating in length range is not more than 0.03mm.
5. grinding screw mandrel bar cylindrical: utilize centerless grinder grinding wire rod thread tooth top cylindrical, the outside diameter tolerance is ± 0.005mm.
6. alignment: carry out alignment on straightener, make the screw mandrel bar after the grinding, radially beating in the 500mm length range is not more than 0.01mm, and radially beating in length range is not more than 0.015mm.
7. machining center hole: the end face at flat screw mandrel two ends guarantees that length overall reaches the product specific length; At the end face centering of the long end of screw mandrel axle journal, and grind this centre bore.
8. axletree end: with the axle journal at lathe turning screw mandrel two ends.
9. mill axle head: with the axle journal at cylindrical grinder grinding screw mandrel two ends.
10. finish grind screw mandrel circular arc screw thread raceway: the wire rod thread cylindrical with grinding is the location benchmark, and centre bore is that auxiliary base finish grindes screw mandrel circular arc screw thread raceway on the raceway special purpose grinder.1 V-arrangement carriage is used at the threaded portion two ends of screw mandrel respectively, and 2 V-arrangement carriages are used at the middle part again, and 4 V-arrangement carriages (also visual wire rod thread length overall is determined carriage quantity) are as the positioning support of screw mandrel circular arc screw thread cylindrical altogether; The existing axial location of one end of processed ball screw has radially spacing again, and the other end is only made axial limiting, does not do radially spacing.The end that present embodiment is equipped with centre bore with processed ball screw drives with the heart folder as the drive end on grinding machine, and centre bore is located with live center; The end face of the other end of the ball screw top axial limiting of ball.During grinding screw mandrel circular arc screw thread raceway, the axial tool setting of emery wheel is a benchmark with the raceway in screw thread stage casing, is evenly distributed at screw mandrel circular arc full stand of thread grinding allowance guaranteeing.The required precision of present embodiment grinding circular arc screw thread raceway is: pitch (2 π) error is less than 0.008mm, and in 300mm screw thread scope, the pitch cumulative errors are less than 0.018mm; In the circular arc screw thread raceway footpath to the coaxiality error of screw mandrel cylindrical within φ 0.008mm, the facial contour degree error of screw thread raceway within 0.005mm, surface roughness 0.4 μ m.
11. keyseat.
The process of ball screw processing method embodiment 1 of the present invention has following characteristics:
1. screw mandrel circular arc thread forming adopts the consumption of roll extrusion (cold rolling) processing metallic few, and energy consumption is low, and technical process is simple, and is highly efficient in productivity, helps producing in a large number in batch.The cementation zone that roll extrusion (cold rolling) forms on screw mandrel circular arc screw thread raceway also helps wearability and the fatigue strength that improves the screw thread raceway.
2. utilize centerless grinder grinding wire rod thread tooth top cylindrical, the production efficiency height, the precision height helps producing in a large number in batch equally.
3. the high-precision wire rod thread cylindrical with grinding is the location benchmark, and centre bore is that auxiliary base finish grindes screw mandrel circular arc screw thread raceway on the raceway special purpose grinder.Can reduce to finish grind the grinding allowance of screw mandrel circular arc screw thread raceway, the amount of metal of removing on the screw mandrel circular arc screw thread raceway is little, not only can reach enough grinding accuracies, reach the international standard of ISO3408-3P2 level, can save processing cost again, also kept the surface property that on screw mandrel circular arc screw thread raceway, forms because of rolling screw-threads (cold rolling) simultaneously as much as possible, the advantage of performance screw thread raceway roll extrusion (cold rolling) machine-shaping.
In sum, the processing method of present embodiment is that metal material consumption is few in a kind of processing, and technical process is simple, and production efficiency is higher, the production in enormous quantities ball screw processing method that screw mandrel circular arc accuracy of thread is high.
Ball screw processing method embodiment 2 of the present invention is an example with ball screw shown in Figure 1 still.Compare with the method for the embodiment of the invention 1, mainly contain following difference:
1. the part that finally will form circular arc screw thread raceway to the screw mandrel bar in the heat treated process of step 3 is carried out surface hardening, tempering; The position that need carry out turning processing to screw mandrel bar two ends utilizes heating generator to carry out high frequency annealing.
2. before step 5 grinding screw mandrel bar cylindrical, the end face at flat screw mandrel two ends guarantees that length overall reaches the product specific length; At screw mandrel bar two ends centering, and grind the two-phase centre bore.
3. use cylindrical grinder grinding screw mandrel circular arc screw thread cylindrical in the step 5 grinding screw mandrel bar cylindrical, grinding screw mandrel bar cylindrical is located with two centre bores.
4. also be that screw mandrel circular arc screw thread cylindrical with grinding is the location benchmark during correct grinding screw mandrel circular arc screw thread raceway, centre bore is that auxiliary base finish grindes screw mandrel circular arc screw thread raceway on the raceway special purpose grinder.Have the positioning support of 3 centre frames as screw mandrel circular arc screw thread cylindrical altogether, promptly 1 centre frame is used at the threaded portion two ends of screw mandrel respectively, and the middle part is again with 1 centre frame supporting.As the assist location benchmark, the existing axial location of an end of processed ball screw has radially spacing again, and the other end is only made axial limiting, does not do radially spacing.The end that present embodiment is equipped with centre bore with processed ball screw drives with the heart folder as the drive end on grinding machine, and centre bore is located with live center; The mid-ball of the centre bore of the other end of ball screw, outside the outstanding centre bore, top and front end face is that the live center on plane is made axial limiting to processed screw mandrel.Present embodiment is suitable for the small lot batch manufacture of ball screw.
Claims (10)
1. a ball screw processing method is characterized in that, may further comprise the steps:
101) screw mandrel circular arc screw thread adopts cold rolling moulding;
102) grinding screw mandrel circular arc screw thread cylindrical;
103) the screw mandrel circular arc screw thread cylindrical with grinding is the centre bore that screw mandrel was made and/or ground to benchmark;
104) processing screw mandrel axle head;
105) the screw mandrel circular arc screw thread cylindrical with grinding is the location benchmark, and centre bore is an auxiliary base grinding screw mandrel circular arc screw thread raceway.
2. ball screw processing method according to claim 1 is characterized in that, uses centerless grinder grinding wire rod thread cylindrical in step 102.
3. ball screw processing method according to claim 1 and 2 is characterized in that, also comprises alignment procedure before step 102 grinding wire rod thread cylindrical.
4. ball screw processing method according to claim 1 and 2 is characterized in that, also comprises alignment procedure before step 103 is made the centre bore at screw mandrel two ends.
5. ball screw processing method according to claim 1 and 2 is characterized in that, also comprises the quenching of screw mandrel circular arc thread surface, normalizing and screw mandrel alignment procedure before step 105 grinding screw mandrel circular arc screw thread raceway.
6. ball screw processing method according to claim 1 and 2 is characterized in that, uses at least 2 centre frames or the V-arrangement carriage positioning support as the wire rod thread cylindrical in step 105.
7. ball screw processing method according to claim 6 is characterized in that, 2 centre frames or V-arrangement bearing bracket is arranged at the wire rod thread two ends.
8. ball screw processing method according to claim 7 is characterized in that, described is that auxiliary base is that an end of processed ball screw is done axially and radially spacing with the centre bore, and the other end is only made axial limiting, does not do radially spacing.
9. ball screw processing method according to claim 8 is characterized in that, processed ball screw is equipped with centre bore and locatees with regular centre at the lathe drive end; The end face of the other end of ball screw is centering not, with the top axial limiting of ball.
10. ball screw processing method according to claim 1 and 2 is characterized in that, when step 105 grinding screw mandrel circular arc screw thread raceway, emery wheel is benchmark with respect to the axial location of screw thread raceway with the raceway in screw thread stage casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100656551A CN101224540B (en) | 2008-01-25 | 2008-01-25 | Ball screw processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100656551A CN101224540B (en) | 2008-01-25 | 2008-01-25 | Ball screw processing method |
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| CN101224540A true CN101224540A (en) | 2008-07-23 |
| CN101224540B CN101224540B (en) | 2010-07-28 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102734416A (en) * | 2012-06-20 | 2012-10-17 | 无锡宇吉科技有限公司 | Screw rod |
| CN102728999A (en) * | 2011-04-07 | 2012-10-17 | 温永林 | Double-bolt-head screw machining process |
| CN102764783A (en) * | 2012-07-19 | 2012-11-07 | 格朗富（苏州）集团有限公司 | Machining method of lead screw |
| CN103406735A (en) * | 2013-08-20 | 2013-11-27 | 潍坊帅克机械有限责任公司 | Machining method of crank shaft of robot RV speed reducer |
| CN104384874A (en) * | 2014-09-27 | 2015-03-04 | 安徽金庆龙机械制造有限公司 | Processing process of automobile engine crank shaft |
| CN104690520A (en) * | 2015-02-12 | 2015-06-10 | 丽水学院 | Processing technique for rack screw of automobile electrical power steering box |
| CN105057727A (en) * | 2015-09-08 | 2015-11-18 | 华中科技大学 | Positioning method for turning reference of train axle forging blank and system of positioning method |
| CN111250941A (en) * | 2020-02-19 | 2020-06-09 | 惠州市金思维科技有限公司 | Processing technology of anti-collision screw rod |
| CN112372257A (en) * | 2020-12-02 | 2021-02-19 | 浙江凯亚德轴承制造有限公司 | Machining process of ball screw |
| CN112404916A (en) * | 2020-12-14 | 2021-02-26 | 丽水市冠驰传动科技有限公司 | Machining method of ball screw |
| CN113182787A (en) * | 2021-05-07 | 2021-07-30 | 常州惠勒电机有限公司 | Method for machining lead screw of stepping motor |
-
2008
- 2008-01-25 CN CN2008100656551A patent/CN101224540B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102734416A (en) * | 2012-06-20 | 2012-10-17 | 无锡宇吉科技有限公司 | Screw rod |
| CN102764783A (en) * | 2012-07-19 | 2012-11-07 | 格朗富（苏州）集团有限公司 | Machining method of lead screw |
| CN103406735B (en) * | 2013-08-20 | 2015-10-28 | 山东帅克机械制造股份有限公司 | The processing method of robot RV reducer crank axle |
| CN103406735A (en) * | 2013-08-20 | 2013-11-27 | 潍坊帅克机械有限责任公司 | Machining method of crank shaft of robot RV speed reducer |
| CN104384874A (en) * | 2014-09-27 | 2015-03-04 | 安徽金庆龙机械制造有限公司 | Processing process of automobile engine crank shaft |
| CN104690520A (en) * | 2015-02-12 | 2015-06-10 | 丽水学院 | Processing technique for rack screw of automobile electrical power steering box |
| CN105057727A (en) * | 2015-09-08 | 2015-11-18 | 华中科技大学 | Positioning method for turning reference of train axle forging blank and system of positioning method |
| CN111250941A (en) * | 2020-02-19 | 2020-06-09 | 惠州市金思维科技有限公司 | Processing technology of anti-collision screw rod |
| CN112372257A (en) * | 2020-12-02 | 2021-02-19 | 浙江凯亚德轴承制造有限公司 | Machining process of ball screw |
| CN112404916A (en) * | 2020-12-14 | 2021-02-26 | 丽水市冠驰传动科技有限公司 | Machining method of ball screw |
| CN113182787A (en) * | 2021-05-07 | 2021-07-30 | 常州惠勒电机有限公司 | Method for machining lead screw of stepping motor |
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| Publication number | Publication date |
|---|---|
| CN101224540B (en) | 2010-07-28 |
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