CN100589905C - High-precision bearing adaptive sleeve machining method - Google Patents
High-precision bearing adaptive sleeve machining method Download PDFInfo
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- CN100589905C CN100589905C CN200710193168A CN200710193168A CN100589905C CN 100589905 C CN100589905 C CN 100589905C CN 200710193168 A CN200710193168 A CN 200710193168A CN 200710193168 A CN200710193168 A CN 200710193168A CN 100589905 C CN100589905 C CN 100589905C
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title abstract description 3
- 230000003044 adaptive effect Effects 0.000 title 1
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 210000000078 claw Anatomy 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 5
- 238000000137 annealing Methods 0.000 claims abstract description 4
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000007514 turning Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 abstract 1
- 230000008676 import Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Abstract
The invention discloses a method for machining a high-precision bearing adapter sleeve. The method comprises the following steps: (1) removing inner stress of a workpiece; and annealing the workpiece;(2) processing the benchmark surface (3) using a lathe to cut a clamping claw of a hydraulic automatic chuck; (4) adjusting a clamping force of a hydraulic oil cylinder; removing the windage of a mainshaft to ensure cutting; adjusting the clamping force of the oil cylinder through an overflow valve and a hydraulic valve of the hydraulic oil cylinder; and oil pressure is within the range between 1and 4 Pa; (5) adopting a machine clamp to rotate the position of a cutter; adopting a blade material of 1/T15, wherein in a titanium carbide coating layer, a positive rake angle r is between 10 and 15 degrees; a rear angle alpha is between 5 and 8 degrees; an end cutting edge angle phi is 15 degrees; and (6) processing the workpiece by the mounting of four working positions. With the matching with the high-precision bearing adapter sleeve, a bearing has smooth operation, no vibration and no noise and can improve service life by 30 to 100 percent averagely.
Description
Technical field:
The invention belongs to the metal cutting processing technique field of Mechanical Fundamentals parts, relate in particular to a kind of method for processing high-precision bearing adapter sleeve.
Background technology
The sleeve product belongs to an annex of rolling bearing, and it is and the supporting application of bearing of band internal taper hole, is mainly used in not bearing big axial force, and on many fulcrums optical axis of tape spool shoulder.Its structural advantage: after the bearing wear dismounting very convenient, can not cause damage to the assembling shaft shoulder, greatly reduce required precision to shaft shoulder processing.
Rolling bearing belongs to interchangeability Mechanical Fundamentals parts, and its internal diameter, external diameter, play required precision are very high, so the sleeve precision of supporting application also must be very high with it.
Domestic first hand is produced the specialized factory of bearing adapter sleeve.West, Henan sleeve subsidiary factory of Bearing Factory is found in 1983, when annual production has only about 10,000 covers, along with Development in Machine Industry of China, to present national nearly sleeve professional production producer family more than 50, output greatly about 5,000,000 the cover about, about about 7,000 ten thousand yuan of the output value.
Domestic existing technological method for processing is as follows: blank adopts seamless steel pipe; Male cone (strobilus masculinus) and internal diameter all adopt general lathe or numerically controlled lathe, rough turn; Afterwards with grinding machine corase grind, the technological method for processing of correct grinding male cone (strobilus masculinus) and internal diameter.
The advantage of current technology method is the surface smoothness height, can reach Ra≤0.8, satisfies the GB requirement, and maximum shortcoming is the product that can not machining high-precision requires, and influences the key project wall thickness difference KD in sleeve performance and life-span
0, can only reach the GB requirement, i.e. KD
0≤ 0.03.And that the GB accuracy standard can only satisfy speed is low, and precision is not high, the little plant equipment requirement of loading, and for picture blower fan industry, compressor industry, high-precision textile machine etc., the rotating speed height, load is big, and the precision height just must supporting high-precision bearing adapter sleeve product.At present, China's high-precision bearing adapter sleeve product is all from external import, main body entrance Sweden SKF brand product, German FAG brand, Japanese NSK brand etc., the SHFC brand product of the technology of the present invention production at present, its precision reaches SKF brand level fully, and its intensity, etch resistant properties aspect substantially exceed SKF brand level.
One, the technological difficulties of high-precision bearing adapter sleeve processing:
1, chucking distortion
As shown in Figure 1, product type A213, product belongs to thin-wall bush, and bottom of thread thickness has only 1.42mm, and the big end of conical surface place thickness is 3.58mm, select the seamless pipe blank for use, model is ф 70*6, so will guarantee normal cutting, machine tool three-jaw chuck just must block the jail, clamping force is big more, and deflection is just big more.Machine and unload workpiece, eliminated clamping force, distortion has been restored again, so the precision of processing has just become.
2, the end-play of machine tool mainshaft bearing necessity
The bearing of machine tool chief axis is very accurate, generally selects P4, P2 class precision for use, and the end-play of cylinder roller bearing (CN) standard is size section 100-120, play minimum 0.05, maximum 0.09
Because there is end-play in main shaft bearing, during cutting, the cutting force effect, the main axis rotation center just must produce displacement, and the wall thickness difference of processing work is exactly 2 times of alignment of shafts displacement, i.e. product wall thickness difference=2* main shaft side-play amount.
3, cutting force causes the skew deflection of workpiece pivot
Machine tool three-jaw chuck is screwed on the short circular cone axle head of main shaft, pipe material blank is installed on the chuck, be equivalent to an overhanging beam, it is an elastic system, therefore, the radial load that metal cutting produces must make the pivot of workpiece be offset, and its side-play amount is directly proportional with the cutting force size, and the wall thickness difference that processing parts produces is 2 times of workpiece offsets.Be not difficult to find out that if the workpiece whole system is a rigidity, the pivot of workpiece also is constant, so just can process the product of wall thickness difference for " 0 ".The out-of-roundness of taper seat and inner hole surface is the ideal product of " 0 ", this is optimal state, and actual is impossible, and the work that we will do is exactly the processing conditions of creating near perfect condition, only in this way the precision of converted products just can reach high level of accuracy near desirable state.
Summary of the invention
The purpose of this invention is to provide a kind of processing method that can produce high-precision bearing adapter sleeve.
Technical scheme of the present invention is: a kind of method for processing high-precision bearing adapter sleeve may further comprise the steps (1) and eliminates inner stress of work annealing:
Seamless steel pipe blank to be processed is put into well formula resistance furnace, be warming up to 650 ℃-800 ℃, be incubated 1-2 hour, cool to the furnace below 200 ℃ and come out of the stove;
(2) processing datum:
Make out-of-roundness≤0.03 of datum level with the lathe tools processing datum;
(3) with lathe car hydraulic pressure automatic chuck claw:
The chucking face diameter turning that makes three claws is adopted soft pawl to less than caught workpiece diameter 0.1mm, and the cambered surface length of three soft claws is not less than 1/3 of datum level girth;
(4) clamping force of adjustment hydraulic jack is eliminated the main shaft play, can guarantee cutting, and the oil cylinder clamping force is by overflow valve in the hydraulic oil container and hydraulic valve adjustment, and oil pressure is from 1 handkerchief to 4 handkerchief scope;
(5) adopt machine card indexable tool, blade material 1/T15, titanium carbide coating, positive rake angle r=10 °-15 °, relief angle α=5 °-8 °, auxiliary angle ф=15 °;
(6) processing sequence of workpiece:
Digit Control Machine Tool automatic knife rack four station processing sequences are as follows:
1. station: face work: twice feed, once rough turn, finish turning once
2. station: rough turn internal diameter: secondary feed
3. station: the car male cone (strobilus masculinus): the secondary feed, once rough turn, finish turning once
4. station: finish turning internal diameter: one-pass
The present invention has very big economic benefit and social benefit:
1, the present high-speed big supporting sleeve of main bearing such as China's frame industry, blower fan industry, compressor industry, all from external import, the quantity of annual import is not very many, greatly about about 4,000 ten thousand yuan, but be worth very highly, price generally all above the 7-10 of homemade mill run doubly reaches the triumphant dyeing machine supporting AH3222 of Co., Ltd with the Wuxi and moves back that to unload lining be example, 560 yuan/cover of import Sweden SKF brand product unit price, and 78 yuan/cover of the product price of China.75 yuan/cover of import SKFH309 sleeve product price.And 7.7 yuan/cover of China's product price.
2, can substitute the old process of tradition fully, save the corase grind male cone (strobilus masculinus); The correct grinding internal diameter; Correct grinding male cone (strobilus masculinus) three process can reduce cost about 15%.
3, supporting high-precision bearing adapter sleeve, bearing operation are steady, the friction noise, and bearing on average can improve 30%-100% service life.
Description of drawings
Fig. 1 is the high-precision bearing adapter sleeve structural representation,
Fig. 2 is car datum level figure,
Fig. 3 is automatic chuck claw chucking workpiece figure,
Fig. 4 eliminates the local schematic diagram of main shaft play for the clamping force of adjusting hydraulic jack.
The specific embodiment
Produce the process technology method of high-precision bearing adapter sleeve:
The process that the present invention is total adopts the Digit Control Machine Tool moulding process that once is installed.H318 is an example with processing, selects pipe material blank as shown in Figure 2 for use, pipe material external diameter ф 95, internal diameter ф 76, width B
1=68
Processing method of the present invention is as follows:
1, eliminate internal stress annealing:
30KW well formula resistance furnace heats up 730 ℃, is incubated 1.5 hours, cools to the furnace below 200 ℃ and comes out of the stove.
2, processing datum: as shown in Figure 2
ф 93
+ 0.1Non-circularity of reference surface≤0.03
3, car hydraulic pressure automatic chuck claw: the turning diameter ф 92-0.1 of three claws, adopt soft pawl, the cambered surface length of three soft claws is not less than 1/3 of datum level girth, adds the H318 model and is not less than 33mm, holds length 22mm.
As can be seen from Figure 3, the chucking datum level ф 93 of workpiece 8 must at first process and meet certain requirements, out-of-roundness≤0.03, three soft pawl I of oild chuck, II, III also wants car to meeting the demands, out-of-roundness≤0.1, and the diameter car is to ф 92, less than the workpiece reference surface diameter, become chuck three-jaw 6 points of the present invention (1 by 3 A chucking workpiece of the three-jaw on the former chuck like this, 2,3,4,5,6) chucking workpiece, identical clamping force, the workpiece deformation amount reduces one times, and the deflection equalization, this is to guarantee that workpiece processing reaches the technical guarantee of high accuracy Geometrical Tolerance Principle, that is to say that workpiece chucking datum level is not round, three chucking faces of claw are not round, all can not process high-precision product.Present domestic professional production bearing adapter sleeve enterprise all be processing datum not, but the seamless steel pipe hair side directly tightens processing, and the chucking mode is a scroll chuck craft chucking way, and clamping force is uncontrollable, and the chucking face is very narrow, workpiece deformation is very big, thereby converted products form and position tolerance precision is very low.
4. adjust the clamping force of hydraulic jack, eliminate the main shaft play, can guarantee cutting, clamping force is the smaller the better.
As can be known from Fig. 4, the chucking oil cylinder is given main shaft 14 pulling force p to the back-end, just makes the interior raceway groove right side cambered surface of the bearing inner sleeve 13 in the headstock 10 that steel ball 12 tightly is pressed on the bearing outside 11 left raceway groove cambered surfaces, reaches the purpose of eliminating bearing rotation play.The bearing designation that the CAK6150Dj machine tool chief axis is used is the 7019AC.P5 level, 25 ° at single-row angular contact ball bearing α angle, and the oil cylinder clamping force is by overflow valve in the hydraulic oil container and hydraulic valve adjustment, oil pressure is from 1 handkerchief to 4 handkerchief scope.
5, adopt machine card indexable tool, blade material 1/T15, titanium carbide coating, positive rake angle r=10 °-15 °, relief angle α=5 °-8 °, auxiliary angle ф=15 °
6, rational processing sequence:
Digit Control Machine Tool automatic knife rack four station processing sequences are as follows:
1. station: face work: twice feed, once rough turn, finish turning once
2. station: rough turn internal diameter: secondary feed
3. station: the car male cone (strobilus masculinus): the secondary feed, once rough turn, finish turning once
4. station: finish turning internal diameter: one-pass
Finish turning male cone (strobilus masculinus) cutting data is as follows: cutting depth t=0.1; Finish turning internal diameter cutting data is as follows: cutting depth t=0.1, because the cutting data of selecting for use is very little, so cutting force is also very little, the main axis rotation center produces displacement hardly, this is the key factor that converted products obtains 0.003 good like this wall thickness difference, that is to say, the side-play amount at main axis rotation center≤0.0015, otherwise be impossible obtain such wall thickness difference precision level.
By above processing method product processed all is the high accuracy product, all reaches table (2) precision level.
Five, high-precision bearing adapter sleeve, the i.e. precision level that reaches of this patent SHFC brand product:
Bearing adapter sleeve product national standard: the listed sleeve internal diameter of JB/T7919.2-1999neq ISO2982-1:1995 following table, screw thread, the tolerance of cone diameter and the circular runout of conical surface.
Table 1
National standard μ m
Table 2
The SHFC brand that the art of this patent the is produced standard μ m that dispatches from the factory
The tabular symbol:
d
1: the tightly fixed liner nominal bore diameter
Δ d
1mp: the tightly fixed liner single plane mean bore deviation
V
D1mp: the tightly fixed liner bore diameter variation
Δ D
1S: tightly fixed liner circular cone outside diameter deviation
V
DOP: D in the single sagittal plane of tightly fixed liner
0Variation
Δ D
1MP-Δ d
3mp: the cone angle deviation of tightly fixed liner conical surface
KD
0: the tightly fixed liner conical surface is to the radial beat eccentricity of endoporus
Conclusion: the project that influences bearing operation performance and life-span most critical is KD
0, having improved 7-10 doubly at the size section SHFC product of the most normal application than GB precision, internal diameter, external diameter, form and position tolerance precision improve 2-8 doubly, and the cone angle difference improves 2-3 doubly.The last lower deviation of size does not influence the serviceability of bearing, so do not need to improve precision as long as in the GB franchise.
Claims (1)
1, a kind of method for processing high-precision bearing adapter sleeve is characterized in that: may further comprise the steps
(1) eliminate inner stress of work annealing:
Seamless steel pipe blank to be processed is put into well formula resistance furnace, be warming up to 650 ℃-800 ℃, be incubated 1-2 hour, cool to the furnace below 200 ℃ and come out of the stove;
(2) processing datum:
Make out-of-roundness≤0.03 of datum level with the lathe tools processing datum;
(3) with lathe car hydraulic pressure automatic chuck claw:
The chucking face diameter turning that makes three claws is adopted soft pawl to less than caught workpiece diameter 0.1mm, and the cambered surface length of three soft claws is not less than 1/3 of datum level girth;
(4) clamping force of adjustment hydraulic jack is eliminated the main shaft play, can guarantee cutting, and the oil cylinder clamping force is by overflow valve in the hydraulic oil container and hydraulic valve adjustment, and oil pressure is from 1 handkerchief to 4 handkerchief scope;
(5) adopt machine card indexable tool, blade material 1/T15, titanium carbide coating, positive rake angle r=10 °-15 °, relief angle α=5 °-8 °, auxiliary angle φ=15 °;
(6) processing sequence of workpiece:
Digit Control Machine Tool automatic knife rack four station processing sequences are as follows:
1. station: face work: twice feed, once rough turn, finish turning once
2. station: rough turn internal diameter: secondary feed
3. station: the car male cone (strobilus masculinus): the secondary feed, once rough turn, finish turning once
4. station: finish turning internal diameter: one-pass.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710193168A CN100589905C (en) | 2007-12-17 | 2007-12-17 | High-precision bearing adaptive sleeve machining method |
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| CN200710193168A CN100589905C (en) | 2007-12-17 | 2007-12-17 | High-precision bearing adaptive sleeve machining method |
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| CN100589905C true CN100589905C (en) | 2010-02-17 |
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| CN107825073A (en) * | 2017-11-08 | 2018-03-23 | 贵州航天精工制造有限公司 | The Efficient Process Technology and processing unit (plant) of a kind of dish |
| CN112570745A (en) * | 2020-12-08 | 2021-03-30 | 吉林大学 | Self-centering four-jaw linkage chuck soft jaw device and machining method |
| CN114192810A (en) * | 2021-12-21 | 2022-03-18 | 烟台万隆真空冶金股份有限公司 | End ring turning process |
Citations (3)
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|---|---|---|---|---|
| CN1734111A (en) * | 2004-08-11 | 2006-02-15 | 洛阳轴承集团有限公司 | Method for finishing inner surface of babbit layer of film bearing lining |
| CN1788924A (en) * | 2004-12-15 | 2006-06-21 | 联邦-莫戈尔迪瓦有限公司 | Sliding bearing element und method for making a rolled-up bearing bush |
| CN101081472A (en) * | 2007-05-18 | 2007-12-05 | 瓦房店光阳轴承集团有限公司 | Method for processing mechanical diaphram pump crank bearing bushing |
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2007
- 2007-12-17 CN CN200710193168A patent/CN100589905C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734111A (en) * | 2004-08-11 | 2006-02-15 | 洛阳轴承集团有限公司 | Method for finishing inner surface of babbit layer of film bearing lining |
| CN1788924A (en) * | 2004-12-15 | 2006-06-21 | 联邦-莫戈尔迪瓦有限公司 | Sliding bearing element und method for making a rolled-up bearing bush |
| CN101081472A (en) * | 2007-05-18 | 2007-12-05 | 瓦房店光阳轴承集团有限公司 | Method for processing mechanical diaphram pump crank bearing bushing |
Non-Patent Citations (4)
| Title |
|---|
| 轧机油膜轴承锥套设计技术的发展. 王建梅等.机械制造，第44卷第497期. 2006 |
| 轧机油膜轴承锥套设计技术的发展. 王建梅等.机械制造，第44卷第497期. 2006 * |
| 轴承套的车削工艺. 候志坚.机械，第32卷第3期. 2005 |
| 轴承套的车削工艺. 候志坚.机械，第32卷第3期. 2005 * |
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Effective date of registration: 20160721 Address after: 472000 Hubin Industrial Park, Sanmenxia, Henan Patentee after: Sanmenxia Haifeng Bearing Adapter Sleeves Manufacture Co., Ltd. Address before: 472000 No. 1, unit 26, building 6, west side, Sanmenxia government, Henan Patentee before: E Jin Patentee before: E Gang |
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Granted publication date: 20100217 Termination date: 20201217 |
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