CN102717326A - Analytic method for superfinishing shaping convexity of roller bearing based on evolution forming principle - Google Patents
Analytic method for superfinishing shaping convexity of roller bearing based on evolution forming principle Download PDFInfo
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- CN102717326A CN102717326A CN2012101762380A CN201210176238A CN102717326A CN 102717326 A CN102717326 A CN 102717326A CN 2012101762380 A CN2012101762380 A CN 2012101762380A CN 201210176238 A CN201210176238 A CN 201210176238A CN 102717326 A CN102717326 A CN 102717326A
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Abstract
The invention relates to an analytic method for the superfinishing shaping convexity of a roller bearing based on the evolution forming principle and belongs to the technical fields of roller bearing manufacturing processes and numerical simulation. According to the analytic method disclosed by the invention, the forming process of the convexity is considered as a process that the shape of an initial surface of a workpiece is gradually evoluted along with the accumulation of the micro grinding amount, the grinding process of materials for producing the surface of the workpiece and the corresponding oil stone wearing process in the superfinishing shaping convexity are decomposed into a series of micro processes and the magnitudes and the distribution of workpiece micro grinding amount and the oil stone micro grinding amount in all micro processes are calculated and accumulated, so that the influence of the oil stone wear for the analysis of the forming principle of the workpiece surface convexity can be considered, the quantification and the computer programming can be realized and the accurate degree for analyzing the convexity forming rule by people is improved.
Description
Technical field
The present invention relates to a kind of ultra lappingout correction of the flank shape of roller bearing convexity analytical method, belong to rolling bearing manufacturing process technology field and numerical simulation technology field based on differentiation shaping principle.
Background technology
In machine driving line Contact Pair, if the shape of generatrix of part contact surface is a straight line, then the edge at the contact wire two ends just produces serious stress concentration behind the stand under load, and Here it is so-called " edge effect ".For reducing or eliminate edge stress and concentrate, the straight edge line of part is trimmed to certain convex curve, be exactly so-called " convexity correction of the flank shape ".In higher the having in the lubricated line Contact Pair of speed of related movement, the convexity correction of the flank shape is also influential to the elastohydrodynamic lubrication oil film.Good convexity correction of the flank shape can make contact stress and elastohydrodynamic lubrication oil film pressure be more evenly distributed along contact wire, effectively improves the service behaviour and the fatigue life of Contact Pair.Because contact stress and elastohydrodynamic lubrication oil film pressure all change very sensitivity to how much of contact-making surface, convexity correction of the flank shape technology has two characteristics: the one, and the convexity amount is that the convexity correction of the flank shape belongs to accurate trickle processing with a small amount of of micron metering, technical difficulty is bigger; The 2nd, convexity correction of the flank shape error is bigger to the uniformity influence of distribution of contact, and it is significant to improve convexity correction of the flank shape precision.
Roller bearing is important mechanical basic part, and its performance and life-span are very big to host work performance and maintenance cost influence.The roller of roller bearing and inside and outside raceway constitute typical line Contact Pair, and for guaranteeing the performance and the life-span of bearing, ultra lappingout convexity correction of the flank shape technology is widely used during the precise roller bearing is made.
Ultra lappingout convexity correction of the flank shape technology is to adopt the convexity correction of the flank shape technology of ultra-lapping technique, and its convexity compacting mechanism and rule are very complicated.Ultra-lapping technique belongs to the category of polishing processing traditionally, is mainly used in the raising surface quality.Ultra lappingout is used for correction of the flank shape and adds man-hour, receives the influence of oilstone wearing character and processing mode, and its convexity compacting mechanism and rule are very complicated.The wear rate of oilstone self commonly used is roughly suitable with the material removal rate of bearing material bearing steel commonly used, and therefore, as fixed instrument, the quick wearing and tearing meeting of oilstone self produces the influence of can not ignore to the formation of roller convexity.With the column roller in bearings is example, and the processing mode of its ultra lappingout convexity correction of the flank shape technology is as shown in Figure 1, and the polylith oilstone flexibly is pressed in row roller top by authorized pressure and carries out the small size linear oscillating of high frequency; Roller is under the guiding and driving of a pair of roll forming through custom-designed rotation deflector roll; Along design vertically through feed track, contact with each station oilstone with the attitude of regulation, pass through successively while rotate below each oilstone; In about 5～20 second time, accomplish correction of the flank shape processing.Because oilstone flexibly is pressed in roller surface; Laterally can cover or make a concession (constant voltage feeding) automatically; Oilstone wearing character, oilstone pressure, roller material mill remove characteristic, through feed many factors such as kinetic characteristic and cutting data, all can influence convexity through the material amount of grinding that influences the roller surface diverse location.Present ultra lappingout correction of the flank shape convexity analytical method all is an analytic method, does not have to consider also can't consider the influence of the quick wear process of oilstone to the convexity forming process.Because the limitation of the complexity of problem itself and existing research, the convexity shaping law of ultra lappingout correction of the flank shape technology fully do not disclose as yet, have influenced convexity correction of the flank shape precision and conforming raising thereof.
Summary of the invention
The purpose of this invention is to provide a kind of based on the ultra lappingout correction of the flank shape of the roller bearing convexity analytical method that develops the shaping principle; So that further disclose the convexity shaping law of ultra lappingout correction of the flank shape technology, for the ultra lappingout correction of the flank shape of roller bearing convexity machining accuracy and conforming raising thereof provide directive function.
The present invention solves the problems of the technologies described above to provide a kind of based on the ultra lappingout correction of the flank shape convexity analytical method that develops the shaping principle, and the step of this analytical method is following:
1). existing ultra lappingout equipment of utilization and instrument experimentize and test; To used workpiece material and oilstone model; Setting up expression oilstone-workpiece contact condition parameter influences the wear of work function of rule to surface of the work material material removal rate, and representes that oilstone-workpiece contact condition parameter influences the oilstone wearing and tearing function of rule to the oilstone wear rate;
2). will surpass the surfacing process of lapping that arbitrary workpiece experienced in the lappingout convexity correction of the flank shape technical process and resolve into the sequence that constitutes by a plurality of little processes by the time;
3). begin from first little process; Analyze oilstone-workpiece contact condition; Utilize the workpiece of foundation and the wearing and tearing function of oilstone; Calculate the size and the distribution of little amount of grinding of workpiece and oilstone wiping amount; And in view of the above the original geometric form of surface of the work and oilstone working face is made amendment the shape of surface of the work and oilstone working face when obtaining first little process and finishing;
4). surface of the work and oilstone working face geometry when finishing according to first little process; Analyze oilstone-workpiece contact condition; Utilize the workpiece of foundation and the wearing and tearing function of oilstone; Calculate the size and the distribution of second little amount of grinding of workpiece and oilstone wiping amount; And it is accumulated on the little amount of grinding of workpiece and oilstone wiping amount of first little process; Again according to the little amount of grinding of workpiece and the oilstone wiping amount of accumulation and distribute and revise the original geometric form of surface of the work and oilstone working face, the shape when obtaining second little process end;
5). successively whole little processes are carried out described calculating of step 4) and processing, the surface of the work shape of the modification that obtains at last is exactly the final protuberance shape of workpiece.
Described oilstone-workpiece contact condition can change in the little process of difference, and in same little process, can regard as constant.
Described step 2) is olation of little process sequence has flexibility in, and whether corresponding little time period of the quantity of little process and little process isometric all can adjust flexibly, to satisfy the requirement of different operating modes and different analysis precisions.
The grinding total time of each workpiece generally is no more than 30 seconds in the said technical process, and the quantity of little process can be adjusted according to analysis precision.
Described analytical method is a kind of method of numerical simulation, above-mentioned step 2) to 5) carry out numerical computations through establishment and operation computer program.
Described analytical method through numerical computations can quantitative analysis oilstone wear process to the influence of convexity forming process.
The invention has the beneficial effects as follows: the process that the present invention develops through the forming process of convexity being regarded as the workpiece initial surface shape follow little amount of grinding accumulation gradually; The process of lapping and the corresponding oilstone wear process of surface of the work material in the ultra lappingout convexity correction of the flank shape technology are all resolved into a series of little processes; To the size of little amount of grinding of workpiece in whole little processes and oilstone wiping amount and distribute and to calculate and accumulate; Make and to consider the influence that oilstone weares and teares about the analysis of surface of the work convexity shaping law; And realize quantification and computer programing, improved the order of accuarcy that people analyze the convexity shaping law.
Description of drawings
Fig. 1 is the ultra lappingout correction of the flank shape of a cylindrical roller convexity process sketch map.
The specific embodiment
Analytical method of the present invention develops the shaping principle based on the trace accumulation that the present invention proposes.In ultra lappingout convexity correction of the flank shape process; Variation along with oilstone-workpiece contact condition changes oilstone to the grinding removal ability of surface of the work material; The trace accumulation that utilizes the present invention to propose develops the shaping principle; Oilstone-workpiece contact condition can change in the little process of difference, and in same little process, can regard as constantly, helps accurately calculating total amount of grinding of surface of the work material and distribution thereof; And can be through adjusting the quantity and the density of little process time sequence flexibly; Improve the order of accuarcy that calculates, make more effective to the analysis of convexity shaping law, of the present invention following based on its concrete steps of the ultra lappingout correction of the flank shape of roller bearing convexity analytical method that develop the shaping principle:
1. existing ultra lappingout equipment of utilization and instrument experimentize and test; To used workpiece material and oilstone model; Setting up expression expression oilstone-workpiece contact condition parameter influences the wear of work function of rule to surface of the work material material removal rate, and representes that oilstone-workpiece contact condition parameter influences the oilstone wearing and tearing function of rule to the oilstone wear rate;
2. will surpass the surfacing milling time course that arbitrary workpiece experienced in the lappingout convexity correction of the flank shape technical process and resolve into the sequence that constitutes by little time period; Time series is corresponding therewith; The interaction process of arbitrary workpiece and oilstone is resolved into a little process sequence; The grinding total time of each workpiece generally is no more than 30 seconds in this technical process, can resolve into one group of little time period sequence, and the process of lapping in each little time period is called little process; The quantity of little process can be adjusted according to analysis precision, but total quantity is limited;
3. begin from first little process; Analyze oilstone-workpiece contact condition; Utilize the workpiece of foundation and the wearing and tearing function of oilstone; Calculate the size and the distribution of little amount of grinding of workpiece and oilstone wiping amount; And in view of the above the original geometric form of surface of the work and oilstone working face is made amendment the shape when obtaining first little process and finishing;
4. surface of the work and oilstone working face geometry when finishing based on first little process; Analyze oilstone-workpiece contact condition; Utilize the workpiece of foundation and the wearing and tearing function of oilstone; Calculate the size and the distribution of second little amount of grinding of workpiece and oilstone wiping amount; And it is accumulated on the little amount of grinding of workpiece and oilstone wiping amount of first little process, again based on the little amount of grinding of workpiece of accumulation with oilstone wiping amount and distribute and revise the original geometric form of surface of the work and oilstone working face, the shape when obtaining second little process end; For each little process, the geometry of oilstone and workpiece and dimensional parameters and mutual alignment relation are confirmed; On the other hand; Other technological factors that influence workpiece material grinding rate and oilstone wear rate are also all confirmed; Therefore can analyze oilstone-workpiece contact condition, and based on the position of wearing and tearing function and should little process corresponding little time period each contact point of length computation oilstone-workpiece and workpiece amount of grinding and oilstone wear extent accordingly;
5. successively whole little processes are carried out described calculating of step 4) and processing, the surface of the work shape of the modification that obtains at last is exactly the final protuberance shape of workpiece.
Through the input parameter of adjustment computer program, can realize ultra lappingout convexity correction of the flank shape numerical Simulation analysis under the different operating modes.
Analytical method of the present invention is applicable to the ultra lappingout convexity correction of the flank shape of cylindrical roller, taper roller, roller path of bearing inner ring and raceway of outer ring of bearing, also is applicable to the ultra lappingout convexity correction of the flank shape of other like parts.Analytical method of the present invention helps further disclosing the convexity shaping law of ultra lappingout correction of the flank shape technology, improves existing ultra lappingout convexity correction of the flank shape technology, promotes convexity correction of the flank shape precision and conforming raising thereof.
Claims (5)
1. based on the ultra lappingout correction of the flank shape of the roller bearing convexity analytical method that develops the shaping principle, it is characterized in that: the step of this analytical method is following:
1). existing ultra lappingout equipment of utilization and instrument experimentize and test; To used workpiece material and oilstone model; Setting up expression oilstone-workpiece contact condition parameter influences the wear of work function of rule to surface of the work material material removal rate, and representes that oilstone-workpiece contact condition parameter influences the oilstone wearing and tearing function of rule to the oilstone wear rate;
2). will surpass the surfacing process of lapping that arbitrary workpiece experienced in the lappingout convexity correction of the flank shape technical process and resolve into the sequence that constitutes by a plurality of little processes by the time;
3). begin from first little process; Analyze oilstone-workpiece contact condition; Utilize the workpiece of foundation and the wearing and tearing function of oilstone; Calculate the size and the distribution of little amount of grinding of workpiece and oilstone wiping amount; And in view of the above the original geometric form of surface of the work and oilstone working face is made amendment the shape of surface of the work and oilstone working face when obtaining first little process and finishing;
4). surface of the work and oilstone working face geometry when finishing according to first little process; Analyze oilstone-workpiece contact condition; Utilize the workpiece of foundation and the wearing and tearing function of oilstone; Calculate the size and the distribution of second little amount of grinding of workpiece and oilstone wiping amount; And it is accumulated on the little amount of grinding of workpiece and oilstone wiping amount of first little process; Again according to the little amount of grinding of workpiece and the oilstone wiping amount of accumulation and distribute and revise the original geometric form of surface of the work and oilstone working face, the shape when obtaining second little process end;
5). successively whole little processes are carried out described calculating of step 4) and processing, the surface of the work shape of the modification that obtains at last is exactly the final protuberance shape of workpiece.
2. according to claim 1 based on the ultra lappingout correction of the flank shape of the roller bearing convexity analytical method that develops the shaping principle, it is characterized in that: described oilstone-workpiece contact condition can change in the little process of difference, and in same little process, can regard as constant.
3. according to claim 1 based on the ultra lappingout correction of the flank shape of the roller bearing convexity analytical method that develops the shaping principle; It is characterized in that: the is olation of little process sequence has flexibility described step 2); Whether corresponding little time period of the quantity of little process and little process isometric all can adjust flexibly, to satisfy the requirement of different operating modes and different analysis precisions.
4. according to claim 1 based on the ultra lappingout correction of the flank shape of the roller bearing convexity analytical method that develops the shaping principle; It is characterized in that: described method is a kind of analytical method of numerical simulation, above-mentioned step 2) to 5) carry out numerical computations through establishment and operation computer program.
5. according to claim 1 based on the ultra lappingout correction of the flank shape of the roller bearing convexity analytical method that develops the shaping principle, it is characterized in that: described method is through the influence of numerical computations quantitative analysis oilstone wear process to the convexity forming process.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465149A (en) * | 2013-05-16 | 2013-12-25 | 河南科技大学 | Super-finishing method for crowning of small end-lifted through tapered roller |
| CN106312707A (en) * | 2016-08-30 | 2017-01-11 | 河南科技大学 | Tapered roller convexity penetrating type superfinishing method based on combination of oilstones with different thicknesses |
| CN106607746A (en) * | 2015-08-13 | 2017-05-03 | 新昌县诚本轴承滚子有限公司 | Spherical roller ultraprecision machining method |
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| SU1148760A1 (en) * | 1982-07-22 | 1985-04-07 | Zemskov Vladislav S | Method of controlling process of grinding races |
| CN1067201A (en) * | 1991-05-24 | 1992-12-23 | 襄阳轴承厂 | The super Seiko skill of cylindrical roller and taper roller convexity |
| CN1775476A (en) * | 2005-11-24 | 2006-05-24 | 上海交通大学 | Method for monitoring honing bar state during internal hole vertical honing process |
| CN101704204A (en) * | 2009-11-12 | 2010-05-12 | 杭州劳格罗拉轴承滚子有限公司 | Noncentral penetrated super-finishing method of spherical roller |
| JP2012086282A (en) * | 2010-10-15 | 2012-05-10 | Honda Motor Co Ltd | Honing device and honing method |
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2012
- 2012-05-31 CN CN201210176238.0A patent/CN102717326B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1148760A1 (en) * | 1982-07-22 | 1985-04-07 | Zemskov Vladislav S | Method of controlling process of grinding races |
| CN1067201A (en) * | 1991-05-24 | 1992-12-23 | 襄阳轴承厂 | The super Seiko skill of cylindrical roller and taper roller convexity |
| CN1775476A (en) * | 2005-11-24 | 2006-05-24 | 上海交通大学 | Method for monitoring honing bar state during internal hole vertical honing process |
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| JP2012086282A (en) * | 2010-10-15 | 2012-05-10 | Honda Motor Co Ltd | Honing device and honing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103465149A (en) * | 2013-05-16 | 2013-12-25 | 河南科技大学 | Super-finishing method for crowning of small end-lifted through tapered roller |
| CN103465149B (en) * | 2013-05-16 | 2015-09-09 | 河南科技大学 | Small end is raised penetration type taper roller convexity ultra-precision grinding and is ground method |
| CN106607746A (en) * | 2015-08-13 | 2017-05-03 | 新昌县诚本轴承滚子有限公司 | Spherical roller ultraprecision machining method |
| CN106312707A (en) * | 2016-08-30 | 2017-01-11 | 河南科技大学 | Tapered roller convexity penetrating type superfinishing method based on combination of oilstones with different thicknesses |
| CN106312707B (en) * | 2016-08-30 | 2018-04-24 | 河南科技大学 | Taper roller convexity penetration type super precision method based on the combination of different-thickness oilstone |
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