Diameter-adjustable positioning device for bearing ring turning

Abstract

The utility model relates to the technical field of bearing ring machining, in particular to a bearing ring turning diameter-adjustable positioning device which comprises a disc-shaped positioning base and further comprises a dovetail plate, a fine adjustment mechanism and a fixing assembly, an annular boss is arranged on one end face of the positioning base, and a plurality of through dovetail grooves are formed in the annular boss. The through direction of the dovetail grooves faces the axis of the positioning base, the number of the dovetail plates is the same as that of the dovetail grooves, the dovetail plates are in sliding fit with the dovetail grooves, jacking protrusions are arranged on the dovetail plates in the axis direction of the positioning base, the fixing assemblies are connected between the positioning base and the dovetail grooves, and the fine adjustment mechanisms are arranged on the jacking protrusions. In the production and machining process of the bearing ring, the dovetail plate can be adjusted according to the diameters of different bearing rings, so that the jacking protrusions distributed in the circumferential direction of the positioning base are adjusted to the needed positioning position, the positioning requirement of the bearing ring within a certain diameter range is met, and the problem that a large amount of cost is consumed due to frequent manufacturing of the positioning device is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing ring processing, in particular to a diameter-adjustable positioning device for turning a bearing ring. Background Art

[0002] Rolling bearings are considered standard parts among mechanical components and are precision accessories. Bearing rings, as annular components, are typically produced by turning. As a crucial step in the bearing production process, the widespread use of CNC lathes for bearing ring turning has significantly reduced the number of machining steps, improved the quality of turned products, and ensured excellent precision for subsequent heat treatment and grinding. Under existing bearing ring processing methods, batch processing can be completed with a single positioning operation. However, due to the wide variety of bearing types and the varying outer diameters of the positioning devices used for bearing rings of varying diameters, a large number of positioning devices must be stored during the bearing ring processing process to accommodate model changes, resulting in high inventory costs. Each model change requires replacement of the positioning device, and to eliminate installation errors, the positioning surface must be re-turned after installation. Multiple model changes and turning operations often result in insufficient positioning height, leading to the need for scrapping and reworking, resulting in high manufacturing costs. Utility Model Content

[0003] The purpose of the utility model is to provide a bearing ring turning machining adjustable diameter positioning device to solve the problem of the prior art in that in the process of bearing ring processing and production, the positioning device is frequently replaced and the positioning surface is turned due to the different sizes of the required bearing rings, and the positioning device is frequently redone during the turning process, which increases time cost and inventory cost.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A bearing ring turning adjustable diameter positioning device includes a disc-shaped positioning base, a dovetail plate, a fine-tuning mechanism, and a fixing assembly. An annular boss is provided on one end face of the positioning base, and a plurality of through dovetail grooves are provided on the annular boss. The through direction of the dovetail grooves is toward the axis of the positioning base. The number of dovetail plates is the same as the number of dovetail grooves. The dovetail plates are slidably fitted with the dovetail grooves. A supporting protrusion is provided on the dovetail plate along the axis of the positioning base. The fixing assembly is connected between the positioning base and the dovetail groove, and the fine-tuning mechanism is provided on the supporting protrusion.

[0006] Furthermore, the end face of the dovetail plate is an isosceles trapezoid, the bottom of the two inclined sides of the dovetail plate are provided with scale lines, the top of the dovetail plate is provided with a waist-shaped adjustment hole that passes through the top and bottom, and the dovetail plate is provided with an adjustment cavity that passes through the upper and lower bottom surfaces of the dovetail plate.

[0007] Furthermore, the dovetail groove is provided with a fixing screw hole.

[0008] Furthermore, the fine-tuning mechanism includes a first top screw and a second top screw, the first top screw is parallel to the axial center line of the positioning base and cooperates with the top holding protrusion thread, one end of the first top screw is located in the adjustment cavity, and the second top screw is threadedly connected to one side of the top holding protrusion and cooperates with the first top screw.

[0009] Furthermore, the fixing assembly includes a hexagon socket bolt and a gasket, the gasket is pressed over the adjustment hole, and the hexagon socket bolt passes through the gasket and the adjustment hole and is threadedly connected in the fixing screw hole.

[0010] Furthermore, the top surface of the positioning base is provided with a plurality of mounting connection holes.

[0011] Furthermore, there are three dovetail grooves, which are evenly distributed along the circumference of the annular boss.

[0012] The beneficial effects of the utility model are:

[0013] 1. During the production and processing of bearing rings, the device can accurately adjust the dovetail plate to a specific positioning position according to the specific diameter of the bearing ring and the scale, so that the top holding protrusions evenly distributed on the circumference of the positioning base can be moved to the required positioning position for bearing rings of different diameters, thereby meeting the processing positioning needs of bearing rings within a certain diameter range, greatly reducing the inventory of positioning devices, and avoiding the problem of frequent production of positioning devices and resulting in a large amount of cost consumption.

[0014] 2. The device uses the adjustment mechanism on the dovetail plate to fine-tune the positioning height according to actual conditions, avoiding the problem of wear of the positioning device due to long-term positioning operation during the bearing ring machining process, which in turn affects the vertical positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the fine-tuning mechanism of the utility model;

[0017] Figure 3 This is a schematic structural diagram of the dovetail plate of the utility model;

[0018] Figure 4 This is a structural diagram of the positioning base of the utility model;

[0019] 1. Positioning base; 2. Dovetail plate; 3. Annular boss; 4. Dovetail groove; 5. Supporting protrusion; 6. Scale pattern; 7. Adjustment hole; 8. Adjustment cavity; 9. Fixing screw hole; 10. First jackscrew; 11. Second jackscrew; 12. Hexagon socket bolt; 13. Gasket; 14. Mounting connection hole. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figures 1-4 A bearing ring turning and positioning device with adjustable diameter includes a disc-shaped positioning base 1 made of non-magnetic stainless steel to prevent debris generated during turning of the bearing ring from becoming magnetized and adsorbed within the positioning base 1, thereby affecting the positioning accuracy of the device. The device also includes a dovetail plate 2, a fine-tuning mechanism, and a fixing assembly. An annular boss 3 is provided on one end surface of the positioning base 1, and a plurality of dovetail grooves 4 are formed therein for cooperating with the dovetail plate 2 to enable sliding of the dovetail plate 2. The dovetail grooves 4 extend toward the axis of the positioning base 1. The dovetail plates 2 have the same number of dovetail grooves 4, and the dovetail plates 2 slide in engagement with the dovetail grooves 4. A supporting protrusion 5 is provided on the dovetail plate 2 along the axis of the positioning base 1 to stabilize the bearing ring, thereby maintaining a vertical position and preventing turning errors caused by tilting of the bearing ring. The fixing assembly is connected between the positioning base 1 and the dovetail grooves 4, and the fine-tuning mechanism is provided on the supporting protrusion 5.

[0022] The end face of the dovetail plate 2 is an isosceles trapezoid. The bottoms of its two inclined sides are provided with graduated grooves 6. A waist-shaped adjustment hole 7 is provided at the top of the dovetail plate 2, extending vertically through it. An adjustment cavity 8 is also provided, extending through the upper and lower bottom surfaces of the dovetail plate 2. The graduated grooves 6 allow the specific positioning diameter to be calculated based on the diameter of the bearing ring. This diameter can then be precisely adjusted by moving the dovetail plate 2 according to the graduated grooves 6, achieving diameter adjustment.

[0023] The dovetail groove 4 is provided with a fixing screw hole 9 for cooperating with the hexagon socket bolt 12 and fixing the dovetail plate 2 .

[0024] The fine-tuning mechanism includes a first jackscrew 10 and a second jackscrew 11. The first jackscrew 10 is parallel to the axis of the positioning base 1 and is threadedly engaged with the supporting protrusion 5. One end of the first jackscrew 10 is located in the adjustment cavity 8, and the second jackscrew 11 is threadedly connected to one side of the supporting protrusion 5 and engages with the first jackscrew 10. When the positioning device wears out due to long-term use and affects vertical positioning, the first jackscrew 10 can be adjusted to fine-tune and move upward, thereby correcting the positioning error caused by the wear of the supporting protrusion 5. When the first jackscrew 10 moves to the desired height, the second jackscrew 11 is adjusted so that it is stuck on the surface of the first jackscrew 10, so that the fine-tuning mechanism is in a locked state for subsequent positioning operations.

[0025] The fixing assembly includes a hexagon socket head bolt 12 and a washer 13. The washer 13 is pressed over the adjustment hole 7. The hexagon socket head bolt 12 passes through the washer 13 and the adjustment hole 7 and is threaded into the fixing screw hole 9. After the washer 13 is positioned on the adjustment hole 7, the hexagon socket head bolt 12 is passed through the fixing slot 21 and connected to the fixing screw hole 9 on the dovetail slot 4, thereby fixing the dovetail plate 2 to the positioning base 1 and completing the diameter adjustment.

[0026] The top surface of the positioning base 1 is provided with a plurality of mounting connection holes 14. After being connected with M10 bolts, the mounting connection holes 14 can be fixed in the clamping fixture to fix the positioning device, so as to facilitate subsequent turning operations. There are three dovetail grooves (4) and they are evenly distributed along the circumference of the annular boss (3).

[0027] The usage and working principle of this utility model are as follows:

[0028] When turning the bearing ring, the positioning device is secured to the clamping fixture using M10 bolts through the mounting connection holes 14. The dovetail plate 2 is then installed into the dovetail groove 4 on the positioning base 1. The dovetail plate 2 is adjusted according to the positioning diameter of the bearing ring being machined. After determining the positioning position based on the calculated distance and the scale grooves 6, the dovetail plate 2 is secured with a gasket 13 and hexagon socket bolts 12, securing the dovetail plate 2 to the positioning base 1. The remaining dovetail plates 2 are then adjusted sequentially based on the scale distance and method of movement of the first dovetail plate 2. After adjusting the dovetail plate 2 and securing the positioning device, the machine tool is started and calibrated with a standard sleeve. After the calibration check is complete, the standard sleeve is removed, and turning of the bearing ring can begin.

[0029] During use, if a change in type is required and the positioning diameter is within the allowable adjustment range of the dovetail plate 2, the hexagon socket bolt 12 can be adjusted to release the fixation of the dovetail plate 2, and the dovetail plate 2 can be adjusted again to the desired positioning position according to the positioning rings of different diameters, so that the positioning convex surfaces 36 remain in the same vertical plane while meeting the positioning requirements of bearing rings of different diameters. There is no need to disassemble and replace the entire positioning device, saving time in replacing the positioning device and achieving rapid type change. If the device produces slight wear during long-term positioning use, the first top screw 10 can be adjusted in the adjustment cavity 8 to correct the error caused by the wear of the supporting protrusion 5, so that the positioning surfaces of the various protrusions of the positioning device remain in the same vertical position, thereby ensuring the positioning accuracy of the device during the turning of the bearing ring.

[0030] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A bearing ring turning and positioning device with adjustable diameter, comprising a disc-shaped positioning base (1), characterized in that: It also includes a dovetail plate (2), a fine-tuning mechanism, and a fixing assembly. An annular boss (3) is provided on one end face of the positioning base (1). A plurality of through dovetail grooves (4) are provided on the annular boss (3). The through direction of the dovetail grooves (4) is toward the axis of the positioning base (1). The number of the dovetail plates (2) is the same as the number of the dovetail grooves (4). The dovetail plates (2) are slidably matched with the dovetail grooves (4). A supporting protrusion (5) is provided on the dovetail plate (2) along the axis of the positioning base (1). The fixing assembly is connected between the positioning base (1) and the dovetail groove (4). The fine-tuning mechanism is provided on the supporting protrusion (5).

2. A bearing ring turning and adjustable diameter positioning device according to claim 1, characterized in that: The end face of the dovetail plate (2) is in the shape of an isosceles trapezoid. The bottoms of the two inclined side faces of the dovetail plate (2) are provided with scale lines (6). The top of the dovetail plate (2) is provided with a waist-shaped adjustment hole (7) that passes through the top and bottom. The dovetail plate (2) is provided with an adjustment cavity (8) that passes through the upper and lower bottom faces of the dovetail plate (2).

3. A bearing ring turning and positioning device with adjustable diameter according to claim 2, characterized in that: The dovetail groove (4) is provided with a fixing screw hole (9).

4. A bearing ring turning and diameter-adjustable positioning device according to claim 2 or 3, characterized in that: The fine-tuning mechanism includes a first top screw (10) and a second top screw (11), wherein the first top screw (10) is parallel to the axis of the positioning base (1) and is threadedly engaged with the supporting protrusion (5), one end of the first top screw (10) is located in the adjustment cavity (8), and the second top screw (11) is threadedly connected to one side of the supporting protrusion (5) and is engaged with the first top screw (10).

5. The bearing ring turning and diameter-adjustable positioning device according to claim 3, characterized in that: The fixing assembly comprises a hexagon socket bolt (12) and a gasket (13), wherein the gasket (13) is pressed over the adjustment hole (7), and the hexagon socket bolt (12) passes through the gasket (13) and the adjustment hole (7) and is threadedly connected in the fixing screw hole (9).

6. The bearing ring turning and adjustable diameter positioning device according to claim 1, characterized in that: The top surface of the positioning base (1) is provided with a plurality of mounting connection holes (14).

7. The bearing ring turning and diameter-adjustable positioning device according to claim 1, characterized in that: The dovetail grooves (4) are provided in three numbers and are evenly distributed along the circumference of the annular boss (3).

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