CN220944787U - Headstock structure for improving grinding precision of bearing raceway - Google Patents
Headstock structure for improving grinding precision of bearing raceway Download PDFInfo
- Publication number
- CN220944787U CN220944787U CN202322221426.7U CN202322221426U CN220944787U CN 220944787 U CN220944787 U CN 220944787U CN 202322221426 U CN202322221426 U CN 202322221426U CN 220944787 U CN220944787 U CN 220944787U
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- Prior art keywords
- bearing
- compression spring
- ring
- roller
- belt pulley
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- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000012856 packing Methods 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model provides a promote headstock structure of bearing raceway grinding precision, includes the center pin, and the gyro wheel piece is installed to center pin one end, and the belt pulley is installed to the other end, processing has the convex shoulder on the center pin, and work bearing is installed to convex shoulder both sides, be provided with compression spring on the outer lane of convex shoulder, the compression spring outside is provided with the outer sleeve, and processing has the round step in the outer sleeve, and compression spring one end is passed through the step and is supported on work bearing outer lane, and the compression spring other end is direct to be supported on work bearing outer lane, the gyro wheel piece is installed on the center pin through the gyro wheel packing ring, and the gyro wheel packing ring is pressed work bearing's inner circle, be provided with the adjustment packing ring between belt pulley and the work bearing, adjustment packing ring is pressed work bearing's inner circle. The utility model improves the existing headstock structure, the compression spring is arranged on the central shaft, and the influence of the rigidity of the tooling on the machining precision is minimized by eliminating the clearance between parts by utilizing the pretightening force of the spring.
Description
Technical Field
The utility model relates to the field of bearing machining, in particular to a headstock structure for improving grinding precision of a bearing raceway.
Background
The inner and outer ring channels of the bearing are ground by a grinding wheel, especially a miniature bearing, the bearing to be processed is generally arranged through a headstock and a saddle, a roller sheet on the headstock supports the bearing, and the roller sheet on the saddle presses the bearing, so that the roller sheet on the headstock can be subjected to radial pressure.
At present, when a central shaft is subjected to radial load, particularly when the front end of the central shaft is subjected to radial load, the central shaft is at risk of bending, so that axial offset is easily generated around the working bearing due to gaps among parts, and the loss of the machining precision of the parts is directly caused due to insufficient rigidity of the tool.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a headstock structure for improving the grinding precision of a bearing raceway aiming at the defects in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a promote headstock structure of bearing raceway grinding precision, includes the center pin, and the gyro wheel piece is installed to center pin one end, and the belt pulley is installed to the other end, processing has the convex shoulder on the center pin, and work bearing is installed to convex shoulder both sides, be provided with compression spring on the outer lane of convex shoulder, the compression spring outside is provided with the outer sleeve, and processing has one round step in the outer sleeve, and compression spring one end is passed through the step and is supported on the work bearing outer lane of one side, and compression spring other end is direct to be supported on the work bearing outer lane of the opposite side, the gyro wheel piece is installed on the center pin through the gyro wheel packing ring, processing has the clamp ring first of outside extension on the gyro wheel packing ring, and clamp ring first presses work bearing's inner circle, be provided with the adjustment packing ring between belt pulley and the work bearing, processing has the clamp ring second of outside extension on the adjustment packing ring, and the clamp ring second also presses work bearing's inner circle.
Further, the roller sheet is sleeved outside the roller gasket, a retainer ring is machined on the roller gasket, the roller sheet is axially positioned by the retainer ring, a first lock nut is installed at one end of the central shaft, and the roller sheet and the retainer ring are locked and fixed by the first lock nut through a roller sheet gland.
Further, the end part of the belt pulley is provided with a bayonet plate, the other end of the central shaft is provided with a flat head, two sides of the flat head are provided with positioning end faces, the bayonet plate is clamped on the positioning end faces at two sides of the flat head, and the end part of the central shaft locks the belt pulley through a second locking nut.
Compared with the prior art, the headstock structure for improving the grinding precision of the bearing raceway improves the existing headstock structure, the compression springs are arranged on the central shaft, the clearances among parts are eliminated by utilizing the pretightening force of the springs, meanwhile, a part of deformation displacement caused by radial load can be counteracted, and meanwhile, springs with different pretightening forces can be selected according to the size of the radial load, so that the influence of the rigidity of the tooling on the machining precision is reduced to the minimum.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front view of a conditioning head of the present utility model;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
Wherein, 1, a central shaft, 2, a roller sheet, 3, a belt pulley, 4, a roller gasket, 5, a retainer ring, 6, a first lock nut, 7, a roller sheet gland, 8, a bayonet plate, 9 and a flat head, 10, a second lock nut, 11, a working bearing, 12, a compression spring, 13, an outer sleeve, 14, a step, 15, a first pressing ring, 16, an adjusting washer, 17 and a second pressing ring.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below.
As shown in fig. 1 and 2, a headstock structure for improving grinding precision of a bearing raceway comprises a central shaft 1, a roller sheet 2 is installed at one end of the central shaft 1, a belt pulley 3 is installed at the other end of the central shaft, the roller sheet 2 is installed on the central shaft 1 through a roller gasket 4, the roller sheet 2 is sleeved on the outer side of the roller gasket 4, a retainer ring 5 is machined on the roller gasket 4, the roller sheet 2 is axially positioned on the retainer ring 5, a first lock nut 6 is installed at one end of the central shaft 1, the roller sheet 2 and the retainer ring 5 are locked and fixed through a roller sheet gland 7 by the first lock nut 6, an outer ring of the roller sheet 2 is used for supporting an inner ring or an outer ring of the bearing to be machined, a bayonet plate 8 is machined at the end part of the belt pulley 3, a flat head 9 is machined at the other end of the central shaft 1, positioning end faces are machined at two sides of the flat head 9, the bayonet plate 8 is clamped on the positioning end faces at two sides of the flat head 9, the other end of the central shaft 1 is locked with the belt pulley 3 through a second lock nut 10, and the belt pulley 3 is connected with an external motor through a belt, and the belt pulley 2 is driven by the external motor, so that the roller sheet 2 at the end of the central shaft 1 rotates.
The center shaft 1 is provided with a shoulder in the middle, working bearings 11 are arranged on two sides of the shoulder, the working bearings 11 are connected to the center shaft 1, the outer ring of the shoulder is provided with a compression spring 12, the outer side of the compression spring 12 is provided with an outer sleeve 13, the outer sleeve 13 is internally provided with a ring of step 14, one end of the compression spring 12 is abutted against the outer ring of the working bearing 11 close to one side of the roller sheet 2 through the step 14, the other end of the compression spring 123 is directly abutted against the outer ring of the working bearing 11 close to one side of the belt pulley, the roller gasket 4 is provided with a first pressing ring 15 which extends outwards, the first pressing ring 15 presses the inner ring of the working bearing 11, an adjusting gasket 16 is arranged between the belt pulley 3 and the working bearing 11, the adjusting gasket 16 is provided with a second pressing ring 17 which extends outwards, and the second pressing ring 17 also presses the inner ring of the working bearing 11, so that under the action of the compression spring 12, gaps in the axial direction are eliminated, and partial deformation displacement is counteracted.
The utility model is not limited to the embodiments described, but a person skilled in the art may make modifications or changes without departing from the spirit of the utility model, i.e. the scope of the disclosure, and the scope of the utility model is defined by the claims.
Claims (2)
1. The utility model provides a promote headstock structure of bearing raceway grinding precision, includes the center pin, and gyro wheel piece is installed to center pin one end, and belt pulley, its characterized in that are installed to the other end: the working bearing is arranged on the two sides of the convex shoulder, a compression spring is arranged on the outer ring of the convex shoulder, an outer sleeve is arranged on the outer side of the compression spring, a circle of step is arranged in the outer sleeve, one end of the compression spring is abutted against the outer ring of the working bearing on one side through the step, the other end of the compression spring is directly abutted against the outer ring of the working bearing on the other side, the roller sheet is arranged on the central shaft through a roller gasket, a first pressing ring which extends outwards is arranged on the roller gasket in a processing manner, the first pressing ring presses the inner ring of the working bearing, an adjusting gasket is arranged between the belt pulley and the working bearing, a second pressing ring which extends outwards is arranged on the adjusting gasket, and the second pressing ring also presses the inner ring of the working bearing;
The end part of the belt pulley is provided with a bayonet plate, the other end of the central shaft is provided with a flat head, two sides of the flat head are provided with positioning end faces, the bayonet plate is clamped on the positioning end faces at two sides of the flat head, and the end part of the central shaft locks the belt pulley through a second locking nut.
2. The head structure for improving grinding accuracy of bearing raceways of claim 1, wherein: the roller sheet is sleeved outside the roller gasket, a retainer ring is machined on the roller gasket, the roller sheet is axially positioned by the retainer ring, a first lock nut is installed at one end of the central shaft, and the roller sheet and the retainer ring are locked and fixed by the first lock nut through a roller sheet gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322221426.7U CN220944787U (en) | 2023-08-18 | 2023-08-18 | Headstock structure for improving grinding precision of bearing raceway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322221426.7U CN220944787U (en) | 2023-08-18 | 2023-08-18 | Headstock structure for improving grinding precision of bearing raceway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220944787U true CN220944787U (en) | 2024-05-14 |
Family
ID=90976451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322221426.7U Active CN220944787U (en) | 2023-08-18 | 2023-08-18 | Headstock structure for improving grinding precision of bearing raceway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220944787U (en) |
-
2023
- 2023-08-18 CN CN202322221426.7U patent/CN220944787U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |