CN212311742U - Clamp for processing outer ring conical surface of bearing without inner ring - Google Patents
Clamp for processing outer ring conical surface of bearing without inner ring Download PDFInfo
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- CN212311742U CN212311742U CN201921125330.8U CN201921125330U CN212311742U CN 212311742 U CN212311742 U CN 212311742U CN 201921125330 U CN201921125330 U CN 201921125330U CN 212311742 U CN212311742 U CN 212311742U
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- stud
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- outer ring
- conical surface
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- 238000003754 machining Methods 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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Abstract
The utility model discloses an anchor clamps for processing outer lane conical surface of no inner circle bearing, including lock nut and elastic locator. The top of the inner hole of the locking nut is provided with a smooth frustum hole, and the inner diameter of the lower end of the frustum hole is smaller than that of the threaded hole of the locking nut; the elastic positioner comprises a stud and a connecting nut arranged at the middle lower part of the stud; the top of the stud is a smooth-surfaced truncated cone body matched with a truncated cone hole of the lock nut, the center of the top surface of the stud is provided with a blind hole, the inner circumferential surface of the blind hole is uniformly and axially provided with narrow grooves which are axially cut through the outer surfaces of a plurality of straight-through studs, and the top of the blind hole is coaxially provided with an accommodating groove matched with the outer diameter of the bearing outer ring; the bearing outer ring is arranged in a containing groove of a stud of the elastic positioner, the locking nut is connected to the upper part of the stud of the elastic positioner, and the lower part of the stud of the elastic positioner is arranged on the processing equipment. The utility model discloses a benchmark location of the outer lane conical surface can be guaranteed to anchor clamps, has guaranteed the processing requirement of the outer lane conical surface.
Description
Technical Field
The utility model relates to an anchor clamps for processing outer lane conical surface of no inner circle bearing.
Background
The bearing without the inner ring is a high-precision miniature special structure bearing and is mainly used in the fields of aerospace, aviation and precision mechanical instruments and meters. The bearing without the inner ring consists of a group of steel balls 10, two outer rings 20 which are arranged together in a leaning way, a dustproof cover 30 and a housing 40. When in use, the steel balls 10 are uniformly distributed in a working area formed by the conical surfaces of the two outer rings 20, and then the inner round holes (namely the inner diameter of the bearing) formed by a group of steel balls 10 are inserted into the rotating shaft 50 for use (see figure 1). The outer ring 20 is an important part among the parts of the bearing without the inner ring, and particularly, the requirement on the conical surface of the outer ring 2 is extremely high, and the influence on the running working state of the bearing is important no matter the geometric shape, the rotation precision and the surface roughness. Since the outer diameter of the bearing outer ring 20 is 3.7mm and the thickness is only 0.63mm (see fig. 2), the ultra-miniature component is difficult to process, and the requirement for a fixture is higher particularly when a conical surface is processed. The positioning fixture used in grinding and ultra-finishing the conical surface of the bearing outer ring is an electromagnetic centerless positioning support. The clamp is composed of a positioning magnetic pole 11 and two supporting blocks, the end face of the outer ring 20 is adsorbed on the positioning face of the positioning magnetic pole 11 by the magnetic force generated by the positioning magnetic pole 11, the two supporting blocks 12 are supported on the outer circular face of the outer ring 20, certain eccentricity is generated between the two supporting blocks and the rotation center, the larger the eccentricity is, the larger the generated supporting force is, and the smaller the supporting force is vice versa (see fig. 3). Because the diameter and the thickness of the outer ring 20 are both extremely small, the adsorption force of the positioning magnetic pole 11 to the outer ring and the eccentric force generated by supporting the positioning magnetic pole are both extremely small, and the high-speed rotation cutting performance of the grinding wheel 13 is not very feasible when the conical surface of the outer ring 20 is ground, but the grinding oilstone 14 does not rotate during grinding, so that the outer ring 20 needs to do reciprocating motion along the grinding surface, and meanwhile, a certain cutting force (shown in figure 4) is added in the direction vertical to the grinding surface, so that the positioning of the outer ring 20 is unstable, even the stalling phenomenon is generated, the processing precision of the conical surface of the outer ring 20 is seriously influenced, the roundness value can only be controlled to be 2 mu m, and the rotation precision of the bearing is.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect and provide an anchor clamps for processing the outer lane conical surface of no inner circle bearing, it can guarantee the benchmark location of the bearing inner race conical surface effectively, does not receive the reciprocal size restriction of reaching the grinding force of grinding motion man-hour to the processing requirement of the bearing inner race conical surface has been guaranteed.
The purpose of the utility model is realized like this: a clamp for processing an outer ring conical surface of a bearing without an inner ring comprises a lock nut and an elastic positioner; wherein,
the top of the inner hole of the locking nut is provided with a smooth frustum hole with the inner diameter being larger at the bottom and smaller at the top, and the inner diameter of the lower end of the frustum hole is smaller than that of the threaded hole of the locking nut;
the elastic positioner comprises a stud and a connecting nut arranged at the middle lower part of the stud; the top of the stud is a smooth-surfaced truncated cone body matched with the truncated cone hole of the lock nut, the center of the top surface of the stud is provided with a blind hole with the inner diameter smaller than the outer diameter of the bearing outer ring, the inner circumferential surface of the blind hole is uniformly and axially cut a plurality of narrow grooves which are directly communicated with the outer surface of the stud, and the top of the blind hole is coaxially provided with an accommodating groove matched with the outer diameter of the bearing outer ring;
the bearing outer ring is placed in a containing groove of a stud of the elastic positioner, the locking nut is connected to the upper portion of the stud of the elastic positioner, and the lower portion of the stud of the elastic positioner is installed on machining equipment.
The clamp for processing the outer ring conical surface of the bearing without the inner ring is characterized in that the lower end of the circular truncated cone hole of the lock nut is transited to the threaded hole of the lock nut through a smooth cylindrical hole, and the inner diameter of the cylindrical hole is larger than that of the threaded hole of the lock nut.
The clamp for processing the outer ring conical surface of the bearing without the inner ring is characterized in that the outer surface of the lock nut is rolled with patterns.
The clamp for processing the outer ring conical surface of the bearing without the inner ring is characterized in that the lower end of the truncated cone body of the stud is transited to the thread section of the stud through a circular arc-shaped ring groove.
The utility model discloses an anchor clamps for processing outer lane conical surface of no inner circle bearing have following characteristics: the bearing outer ring to be machined can be effectively positioned and clamped, the datum positioning of the conical surface of the bearing outer ring to be machined can be effectively guaranteed, and the datum positioning is not limited by the direction of the reciprocating grinding motion and the grinding force, so that the machining requirement of the conical surface of the bearing outer ring is guaranteed, the machining precision of the bearing without the inner ring is greatly improved, the machining difficulty is greatly reduced, and the production efficiency is effectively improved.
Drawings
FIG. 1 is a schematic structural view of a bearing without an inner race;
FIG. 2 is a schematic structural view of an outer race of a bearing without an inner race;
FIG. 3 is a schematic structural diagram of a prior art fixture for processing an outer ring conical surface of a bearing without an inner ring during grinding of the outer ring conical surface;
FIG. 4 is a schematic structural diagram of a prior art fixture for processing an outer ring conical surface of a bearing without an inner ring when grinding the outer ring conical surface;
FIG. 5 is a schematic structural diagram of a fixture for processing an outer ring conical surface of a bearing without an inner ring according to the present invention;
fig. 6 is a schematic view of a lock nut in the utility model clamp;
fig. 7 is a schematic structural view of the elastic positioner in the clamp of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 5 to 7, the fixture for processing the outer ring conical surface of the bearing without the inner ring of the present invention includes a lock nut 6 and an elastic positioner 7; wherein:
a smooth circular truncated cone hole 61 with the inner diameter being large at the bottom and small at the top is formed in the top of the inner hole of the locking nut 6, and the inner diameter of the lower end of the circular truncated cone hole 61 is smaller than that of the threaded hole of the locking nut 6; the lower end of the circular table hole 61 is transited to a threaded hole 63 of the lock nut 6 through a smooth cylindrical hole 62, and the inner diameter of the cylindrical hole 62 is larger than that of the threaded hole 63 of the lock nut 6; the outer surface of the lock nut 6 is knurled with a pattern 64.
The elastic positioner 7 comprises a stud 71 and a connecting nut 72 arranged at the middle lower part of the stud 71; the top of the stud 71 is provided with a smooth frustum 711 matched with the frustum hole 61 of the lock nut 6, and the lower end of the frustum 711 is transited to a thread section 713 of the stud 71 through an arc-shaped annular groove 712; the center of the top surface of the stud 71 is provided with a blind hole 714 with the inner diameter smaller than the outer diameter of the bearing outer ring 20, the inner peripheral surface of the blind hole 714 is uniformly and axially provided with narrow grooves 715 which axially cut the outer surfaces of a plurality of straight-through studs 7, and the top of the blind hole 714 is coaxially provided with an accommodating groove 716 which is matched with the outer diameter of the bearing outer ring 20;
the lock nut 6 is connected to the upper part of the stud 71 of the elastic positioner 7, and the lower part of the stud 71 of the elastic positioner 7 is arranged on the processing equipment.
The utility model discloses a anchor clamps for processing outer lane conical surface of no inner circle bearing, when using, install on the anchor clamps of processing equipment the double-screw bolt 71 lower part of elastic locator 7 first, then lay the outer lane 20 of waiting to process worker in the holding tank 716 of the double-screw bolt of elastic locator 7, again through threaded connection lock nut 6 on the double-screw bolt 71 upper portion of elastic locator 7, when lock nut 6 is connected with double-screw bolt 71, the circular cone face of the round platform hole 61 at lock nut 6 top contacts with the circular cone face of the round platform body 711 at double-screw bolt 71 top, under the effect of lock nut 6 spiral downward force, the conical surface of the round platform hole 61 of lock nut 6 forces the slot 715 on elastic locator 7 to contract, make the cell wall of holding tank 716 suitably radially centre gripping on the outer peripheral face of processed outer lane 20, make outer lane 20 fix in holding tank 716 of elastic locator 7, the machining equipment can be started to machine the conical surface of the bearing outer ring 20. After the processing is finished, the processed bearing outer ring 20 can be taken down by loosening the lock nut 6.
The utility model discloses an anchor clamps for processing outer lane conical surface of no inner circle bearing have following characteristics: the bearing outer ring to be machined can be effectively positioned and clamped, the reference positioning of the semi-outer ring conical surface to be machined is ensured, and the grinding machining is not limited by the reciprocating direction of grinding motion and the grinding force, so that the machining requirement of the outer ring conical surface is ensured, the machining precision of the bearing without the inner ring is greatly improved, the machining difficulty is greatly reduced, and the production efficiency is effectively improved.
The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.
Claims (4)
1. A clamp for processing an outer ring conical surface of a bearing without an inner ring comprises a lock nut and an elastic positioner; it is characterized in that the preparation method is characterized in that,
the top of the inner hole of the locking nut is provided with a smooth frustum hole with the inner diameter being larger at the bottom and smaller at the top, and the inner diameter of the lower end of the frustum hole is smaller than that of the threaded hole of the locking nut;
the elastic positioner comprises a stud and a connecting nut arranged at the middle lower part of the stud; the top of the stud is a smooth-surfaced truncated cone body matched with the truncated cone hole of the lock nut, the center of the top surface of the stud is provided with a blind hole with the inner diameter smaller than the outer diameter of the bearing outer ring, the inner circumferential surface of the blind hole is uniformly and axially cut a plurality of narrow grooves which are directly communicated with the outer surface of the stud, and the top of the blind hole is coaxially provided with an accommodating groove matched with the outer diameter of the bearing outer ring;
the bearing outer ring is placed in a containing groove of a stud of the elastic positioner, the locking nut is connected to the upper portion of the stud of the elastic positioner, and the lower portion of the stud of the elastic positioner is installed on machining equipment.
2. The fixture for machining an outer race cone of a bearingless bearing according to claim 1, wherein a lower end of the circular truncated cone hole of the lock nut is transited to the threaded hole of the lock nut through a smooth cylindrical hole having an inner diameter larger than an inner diameter of the threaded hole of the lock nut.
3. The fixture for machining the outer race tapered surface of the bearing without the inner race according to claim 1 or 2, wherein an outer surface of the lock nut is knurled.
4. The fixture for machining the outer ring conical surface of the bearing without the inner ring according to claim 1, wherein the lower end of the truncated cone body of the stud is transited to the threaded section of the stud through a circular arc-shaped annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921125330.8U CN212311742U (en) | 2019-07-18 | 2019-07-18 | Clamp for processing outer ring conical surface of bearing without inner ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921125330.8U CN212311742U (en) | 2019-07-18 | 2019-07-18 | Clamp for processing outer ring conical surface of bearing without inner ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212311742U true CN212311742U (en) | 2021-01-08 |
Family
ID=74029060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921125330.8U Active CN212311742U (en) | 2019-07-18 | 2019-07-18 | Clamp for processing outer ring conical surface of bearing without inner ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212311742U (en) |
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2019
- 2019-07-18 CN CN201921125330.8U patent/CN212311742U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230302 Address after: 201108 Part of the first floor (15-1-B, 15-1-C, 15-1-D, 15-1-E) of Building 15, No. 4399, Yindu Road, Minhang District, Shanghai Patentee after: Shanghai Tianhong Miniature Bearing Co.,Ltd. Address before: 200001 43A-16 four, B District, 666 Beijing East Road, Huangpu District, Shanghai. Patentee before: SHANGHAI MOHONG BEARING Co.,Ltd. |