CN211867313U - Tapered roller grinding device based on large-end spherical datum plane as datum positioning - Google Patents
Tapered roller grinding device based on large-end spherical datum plane as datum positioning Download PDFInfo
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- CN211867313U CN211867313U CN201922383559.8U CN201922383559U CN211867313U CN 211867313 U CN211867313 U CN 211867313U CN 201922383559 U CN201922383559 U CN 201922383559U CN 211867313 U CN211867313 U CN 211867313U
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- 238000005259 measurement Methods 0.000 abstract description 5
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- 229910001651 emery Inorganic materials 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
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Abstract
The utility model discloses a tapered roller grinding device based on big end ball base face as benchmark location, install reverse positioning mechanism additional at centerless grinder baffle front end, this reverse positioning mechanism includes the location turning arm, the middle part of location turning arm is connected with the baffle rotary type through the articulated shaft, the one end of location turning arm is provided with elasticity pretension pole, be provided with back locating piece and front locating shaft on the baffle, back locating piece and front locating shaft limit respectively the location turning arm and elasticity pretension pole; during grinding, the other end of the positioning crank arm is in contact with a large-end spherical base surface of the tapered roller by adjusting the elastic pre-tightening rod, the front positioning shaft and the rear positioning block, so that the large-end spherical base surface of the roller is used as a reference for positioning and grinding, and the tapered roller is used as a reference for grinding wheel correction, guide wheel correction, grinding and measurement; and the height of the running track is consistent with that of the bearing when in use, so that the precision grade, the rotating speed and the service life of the tapered roller bearing are improved.
Description
The technical field is as follows:
the utility model relates to a tapered roller's grinding device especially relates to a tapered roller grinding device based on big end ball base face is benchmark location.
Background art:
currently, in the field of mechanical assembly industry, in order to improve production efficiency and reduce production cost, the rotating speed of a bearing needs to be increased and the service life of the bearing needs to be prolonged. The tapered roller bearing can bear radial force, axial force and certain overturning moment load; the tapered roller bearing can be designed into a double-row tapered roller bearing and a four-row tapered roller bearing according to the requirements of installation conditions, so that different working conditions are met, and the tapered roller bearing is favored by a plurality of designers, and the service life of equipment is prolonged as much as possible without increasing the equipment investment; however, the designed limit speed of the tapered roller bearing with the same size is lower than that of other types of bearings (deep groove ball, cylindrical roller bearing and the like), and the use effect of the large and super tapered roller bearing is poorer. If the tapered roller bearing is replaced by the international brand tapered roller bearing, the using effect is obviously better than that of the domestic bearing; in recent years, domestic bearing production enterprises purchase a batch of high-precision numerical control grinding equipment so as to improve the manufacturing precision grade of the bearing and meet the market demand of high-end bearings. After the measures are implemented, the deep groove ball bearing and the cylindrical roller bearing have satisfactory market acceptance, but the conical roller bearing has certain difference with the international brand bearing in use effect.
With the progress of research, a traditional grinding method of the tapered roller is systematically analyzed, and key factors for restricting the grinding quality of the tapered roller are found out and are contrary to the positioning and design principle of the small end face of the tapered roller; the design principle requires that the central line of the tapered roller is intersected with the outer ring raceway generatrix and the inner ring raceway generatrix at one point, and the intersected tangent plane of the three lines must be tangent to the positive phase of the roller spherical basal plane, so that the pure rolling condition of the tapered roller bearing in use can be realized. In the traditional tapered roller processing method, the small end face of the tapered roller is used as a positioning reference, and the cutting-in grinding method is adopted for processing, so that the tangent plane of the three-line intersection and the ball base plane of the roller can not form positive tangency, the sliding phenomenon of the tapered roller bearing in the use process can be caused, and the service life and the speed of the bearing can be influenced. The main consideration of grinding the tapered roller on the centerless grinding machine by taking the small end face of the tapered roller as a positioning reference is to facilitate loading and unloading, and the detection and use of the tapered roller are both based on the large-end ball base surface. If the tapered roller is replaced by taking the sphere base surface as the reference surface during measurement, the batch grouping size of the finished roller has larger deviation, so that the batch grouping labor amount is increased, the rework rate is high, and the cost is increased. When the tapered roller is used, the bearing is easy to generate heat when rotating at a high speed, so that the limit rotating speed of the bearing is greatly reduced, and the service life of the bearing is seriously influenced.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the defects of the prior art are overcome, and the tapered roller grinding device based on the large-end spherical base surface as reference positioning is reasonable in design, improves machining precision and prolongs service life.
The technical scheme of the utility model is that:
a tapered roller grinding device based on large-end spherical datum plane as datum positioning comprises a positioning crank arm, wherein the middle part of the positioning crank arm is rotatably connected with a guide plate through a hinge shaft, an elastic pre-tightening rod is arranged at one end of the positioning crank arm, a rear positioning block and a front positioning shaft are arranged on the guide plate, the rear positioning block and the front positioning shaft respectively limit the positioning crank arm and the elastic pre-tightening rod, the other end of the positioning crank arm is in contact with the large-end spherical datum plane of a tapered roller, positioning grinding with the large-end spherical datum plane of the roller as the datum is realized, and the tapered roller is based on the spherical datum plane of the tapered roller in grinding wheel correction, guide wheel correction, grinding and measurement; and is consistent with the running track height of the bearing in use.
The other end of the positioning crank arm is provided with an arc surface and is in tangential contact with the large-end spherical base surface of the tapered roller. The outer end of the elastic pre-tightening rod is provided with a spherical handle, so that the elastic pre-tightening rod is convenient to operate and made of elastic materials.
The rear positioning block is fixed on the guide plate through a connecting bolt, the side face of the rear positioning block is in contact with the side face of the positioning crank arm, and the front positioning shaft is in tight fit with the positioning hole in the guide plate.
The utility model has the advantages that:
1. the utility model adopts the reverse positioning mechanism to realize the positioning and grinding by taking the ball base surface of the big end of the roller as the reference, thereby leading the ball base surface of the tapered roller to be taken as the reference in the finishing, grinding and measuring of the grinding wheel and the guide wheel; and is consistent with the running track height of the bearing when in use; the precision grade of the tapered roller bearing can be improved, and the rotating speed and the service life of the tapered roller bearing can be improved.
2. The utility model discloses mainly be for at the grinding of numerical control centerless grinder abrasive machining long-life symmetry logarithmic modification tapered roller generating line, can realize numerical control grinding wheel dresser, numerical control guide pulley dresser is finishing the emery wheel, the value that the guide pulley made the X axle all uses ball base face and reverse fixed establishment contact point as the initial point with the operation initiating terminal to the realization is at the emery wheel correction, the guide pulley is revised, the grinding, measure and all use tapered roller ball base face as the benchmark, can improve production efficiency and detection efficiency.
3. The utility model discloses the messenger is put, is got the convenient easy operation of tapered roller, so this reverse positioning mechanism design is linkage structure, puts promptly, when getting tapered roller to the grinding machine on, below spherical positioner need fall the baffle, spherical positioner can rise and the tapered roller sphere base face contacts the location during the grinding, must install reverse pretension mechanism and reverse positioning mechanism additional. Note: the axial force generated when grinding is positive.
4. The utility model discloses make tapered roller produce directional operator's axial force autogiration when the grinding and promote roller ball base face and the tangent contact of reverse orientation face and fix a position (the movement track when using with the bearing is unanimous, and tapered roller ball base face is tangent and fix a position with big flange conical surface), just must carry out the opposite direction adjustment to the grinding wheel axle of original centerless grinding machine and the overall arrangement of leading axle to realize accurate tangent contact location.
5. The utility model discloses the grinding of especially adapted high accuracy long-life face tapered roller: the design of the generatrix of the high-precision long-life surface tapered roller is a symmetrical logarithmic repair generatrix, and the tangency of the external diameter logarithmic generatrix of the tapered roller and the large-end spherical basal surface of the tapered roller can be realized only by taking the large-end spherical basal surface of the tapered roller as the initial end of a calibration selected surface of a numerical control grinding wheel corrector to correct the grinding surface of a grinding wheel and a guide wheel during grinding. Note: the logarithmic modification formula of the tapered roller is as follows: p (X) = K Dwe Ln (1/[1- (2X/Lwe) ], when 2X ≧ Lwe, the logarithmic function does not hold.
6. The utility model discloses reverse positioning mechanism's contact location point can improve tapered roller processingquality in order to reduce the frictional resistance when grinding along with tapered roller direction of rotation.
7. The utility model discloses reverse positioning mechanism is provided with preceding location axle and back locating piece, can guarantee the position of location turning arm, and then the big end sphere for tapered roller is with stable support.
8. The utility model discloses set up elasticity pretension pole, can warp under the powerful to realize rotating the effect of regulation and control location turning arm, the operation of being convenient for simultaneously, it is efficient.
9. The utility model discloses location turning arm adopts the theory of operation of lever, and its middle part articulates on the baffle, can rotate to the one end of location turning arm sets up the circular arc surface, is convenient for contact with tapered roller's big end ball base face, the two tangent contact.
10. The utility model discloses it is very strong to make the field practicality at large-scale, super-huge tapered roller bearing, easily popularizes and implements, has good economic benefits.
Description of the drawings:
FIG. 1 is a schematic diagram of a tapered roller grinding operation;
FIG. 2 is a schematic structural diagram of a reverse positioning mechanism of a tapered roller grinding device based on a large-end ball base surface as a datum positioning;
fig. 3 is a side view of the reverse positioning mechanism of fig. 2.
The specific implementation mode is as follows:
example (b): referring to fig. 1, 2 and 3, 1-tapered roller, 2-grinding wheel, 3-guide wheel, 4-guide plate, 5-positioning crank arm, 6-rear positioning block, 7-front positioning shaft, 8-elastic pre-tightening rod, 9-handle, 10-front supporting shaft, 11-rear supporting shaft, 12-articulated shaft; 13-tangential contact point.
In fig. 1, the grinding wheel 2 and the guide wheel 3 both rotate rightwards, and respectively drive the tapered roller 1 to rotate leftwards when the left and right sides of the roller center are tangent, namely the guide wheel 3 guides the roller to rotate leftwards, and the grinding wheel 2 grinds the roller to rotate leftwards so as to enable the roller to realize friction rotation.
A tapered roller grinding device based on large-end spherical base surface as reference positioning has the technical scheme that:
a. the front end of a guide plate 4 of the centerless grinding machine is additionally provided with a reverse positioning mechanism, the reverse positioning mechanism comprises a positioning crank arm 5, the middle part of the positioning crank arm 5 is rotatably connected with the guide plate 4 through a hinge shaft 12, one end of the positioning crank arm 5 is provided with an elastic pre-tightening rod 8, the guide plate 4 is provided with a rear positioning block 6 and a front positioning shaft 7, and the rear positioning block 6 and the front positioning shaft 7 respectively limit the positioning crank arm 5 and the elastic pre-tightening rod 8;
b. during grinding, the other end of the positioning crank arm 5 is contacted with the large-end spherical datum plane of the tapered roller 1 by adjusting the elastic pre-tightening rod 8, the front positioning shaft 7 and the rear positioning block 6, so that the positioning grinding with the large-end spherical datum plane of the roller as a reference is realized, and the tapered roller is subjected to grinding wheel correction, guide wheel correction, grinding and measurement with the spherical datum plane of the tapered roller as a reference; and is consistent with the running track height of the bearing in use.
The preferred scheme is as follows: the other end of the positioning crank arm 5 is provided with an arc surface and is in tangential contact with the large-end spherical base surface of the tapered roller 1. The outer end of the elastic pre-tightening rod 8 is provided with a spherical handle 9, so that the operation is convenient, and the elastic pre-tightening rod 8 is made of elastic materials. The rear positioning block 6 is fixed on the guide plate 4 through a connecting bolt, the side surface of the rear positioning block is in contact with the side surface of the positioning crank arm 5, and the front positioning shaft 7 is in close fit with the positioning hole in the guide plate 4.
The elastic pre-tightening rod 8 has certain elasticity, so that the elastic pre-tightening rod can be pressed downwards and bent outwards, so that the elastic pre-tightening rod can be separated from the constraint of the front positioning column 7, and in addition, the elastic pre-tightening rod 8 also has certain hardness, so that a supporting force is provided for the tapered roller 1.
When the handle 9 is pressed and moves in an outward bending mode, the other end of the positioning crank arm 5 rotates downwards, when the rotating height is lower than that of the guide plate 4, the roller can be freely taken and placed, when the grinding wheel 2 feeds, the handle 9 is reversely operated and pressed to the position of the front positioning shaft 7, the elastic pre-tightening rod 8 generates pre-tightening force after being bent, so that the positioning tangent point of the positioning crank arm 5 is tangent to the ball base surface of the large end of the tapered roller 1, and the positioning surface of the positioning crank arm 5 is in close contact with the anti-positioning surface of the rear positioning block 6 through the pre-tightening force, so that accurate positioning is achieved.
The utility model relates to a rationally, convenient to use is succinct. The novel grinding method for grinding the long-life symmetrical logarithmic modification type tapered roller bus by the numerical control centerless grinding machine is realized after the reverse positioning mechanism is installed on the guide plate; and the numerical control grinding wheel dresser and the numerical control guide wheel dresser can realize that the value taking and the operation starting end of an X axis all use the tangent point of the spherical base surface as the starting end point when the grinding wheel dresser and the numerical control guide wheel dresser dress the grinding wheel and the guide wheel, so that the grinding wheel dresser, the guide theory dresser, the cut-in grinding and the inspection measurement all use the spherical base surface of the conical roller as a common reference surface, the production efficiency and the inspection efficiency can be improved on the premise of ensuring the quality, and the production cost is reduced. And the method has a promoting effect on improving the technical level of domestic equipment, and has obvious economic and social benefits.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a tapered roller grinding device based on big end ball base face is benchmark location, includes the location turning arm, characterized by: the middle part of location turning arm is passed through the articulated shaft and is connected with the baffle rotary type, the one end of location turning arm is provided with elasticity pretension pole, be provided with back locating piece and preceding location axle on the baffle, back locating piece and preceding location axle are injectd respectively location turning arm and elasticity pretension pole, the other end of location turning arm and tapered roller's big end ball base face contact realize using the big end ball base face of roller to fix a position grinding and measure as the benchmark.
2. The tapered roller grinding device based on the large-end spherical base surface as the reference positioning as claimed in claim 1, wherein: the other end of the positioning crank arm is provided with an arc surface and is in tangential contact with the large-end spherical base surface of the tapered roller.
3. The tapered roller grinding device based on the large-end spherical base surface as the reference positioning as claimed in claim 1, wherein: the outer end of the elastic pre-tightening rod is provided with a spherical handle, so that the elastic pre-tightening rod is convenient to operate and made of elastic materials.
4. The tapered roller grinding device based on the large-end spherical base surface as the reference positioning as claimed in claim 1, wherein: the rear positioning block is fixed on the guide plate through a connecting bolt, the side face of the rear positioning block is in contact with the side face of the positioning crank arm, and the front positioning shaft is in tight fit with the positioning hole in the guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922383559.8U CN211867313U (en) | 2019-12-26 | 2019-12-26 | Tapered roller grinding device based on large-end spherical datum plane as datum positioning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922383559.8U CN211867313U (en) | 2019-12-26 | 2019-12-26 | Tapered roller grinding device based on large-end spherical datum plane as datum positioning |
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| CN211867313U true CN211867313U (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111203769A (en) * | 2019-12-26 | 2020-05-29 | 洛阳汇工轴承科技有限公司 | Tapered roller grinding method and device based on large-end spherical datum plane as datum positioning |
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2019
- 2019-12-26 CN CN201922383559.8U patent/CN211867313U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111203769A (en) * | 2019-12-26 | 2020-05-29 | 洛阳汇工轴承科技有限公司 | Tapered roller grinding method and device based on large-end spherical datum plane as datum positioning |
| CN111203769B (en) * | 2019-12-26 | 2025-05-02 | 洛阳汇工轴承科技有限公司 | Tapered roller grinding method and device based on large end ball base surface as reference positioning |
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