CN118682510A - A positioning device for bearing ring processing - Google Patents

Abstract

The present invention relates to the technical field of boring devices, and specifically discloses a positioning device for processing a bearing ring, comprising a workbench and a drill bit arranged on the workbench, two expansion and contraction devices arranged on the workbench opposite to each other, the expansion and contraction device comprising a linear drive mechanism, a mounting plate and a plurality of pressure rollers, the pressure rollers are radially guided along the mounting plate and are assembled on the mounting plate with limited movement to the left and right, the linear drive mechanism is used to drive each pressure roller to move radially along the mounting plate; the positioning members are arranged on the workbench opposite to each other to the left and right, and are used to clamp the left and right end faces of the bearing ring; the supporting members correspond to each expansion and contraction device, the supporting members are assembled on the pressure rollers for moving to the left and right and rotate with the expansion and contraction device, and a hole groove is formed between the two supporting members; the linear drive member is used to drive each expansion and contraction device to move to the left and right; the motor is used to drive each expansion and contraction device to rotate. The positioning device for processing a bearing ring can support the inner wall of the punching position of the bearing ring, thereby improving the processing quality of the bearing ring.

Description

A positioning device for bearing ring processing

Technical Field

The invention relates to the technical field of boring devices, and in particular to a positioning device for machining a bearing ring.

Background Art

The bearing ring is a ring-shaped part and one of the key components of the bearing. Its main function is to reduce friction during movement while supporting the rotating shaft or maintaining the correct position of the shaft. Different types of bearings have different requirements for the design of the bearing rings. Some types of bearings require through holes to be opened on the bearing rings. For example, in some bearings that require efficient lubrication, the through holes on the bearing rings can be used as channels for lubricating oil or grease to ensure that the inside of the bearing is fully lubricated; for bearings working in high temperature environments, the through holes on the bearing rings can also be used as channels for coolant to take away the heat generated inside the bearing and reduce the operating temperature of the bearing; in situations where the bearing position needs to be precisely controlled or the bearing needs to be prevented from moving, the through holes on the bearing rings can be used to install locating pins, fasteners, etc. to ensure the stable installation of the bearing. Therefore, during the manufacturing or maintenance process, special equipment is required to drill the bearing rings to achieve the required design specifications and functions.

The bearing ring drilling equipment in the prior art, such as a bearing ring punching machine disclosed in the Chinese patent document with the announcement number CN211991044U, is equipped with an expansion structure so that it can adapt to bearing rings with different inner diameters and tighten the bearing rings. Then, people fix the angle of the rotating shaft through the positioning component, so that the angle of the bearing ring is fixed, and then the punching machine body is used to punch holes. After the punching is completed, the positioning component is contacted to rotate the rotating shaft to change the position of the bearing ring to be punched.

However, the above-mentioned bearing ring punching machine in the prior art does not support the inner wall of the bearing ring punching position when punching holes in the bearing ring. Since the bearing ring is a hollow cylinder, this may cause the bearing ring to deform during the punching process, affecting the overall quality of the bearing ring. It may also cause the bearing ring to vibrate during the punching process, resulting in rough or irregular hole edges.

Summary of the invention

The present invention provides a positioning device for bearing ring processing, aiming to solve the problem of a bearing ring punching machine in the related art lacking internal support for the punching position of the bearing ring.

A positioning device for processing a bearing ring of the present invention comprises a workbench and a drill bit arranged on the workbench, and also comprises: an expansion and contraction device, wherein two expansion and contraction devices are arranged on the workbench opposite to each other on the left and right sides, wherein the expansion and contraction device comprises a linear drive mechanism, a mounting plate and a plurality of pressure rollers extending left and right, wherein the pressure rollers are radially guided along the mounting plate and are assembled on the mounting plate with limited movement left and right, wherein the linear drive mechanism is used to drive each pressure roller to move radially along the mounting plate so that the outer surface of the pressure roller generates a pressing force against the inner wall of the bearing ring, thereby fixing the bearing ring; a positioning member, wherein the positioning member The left and right parts are arranged on the workbench opposite to each other, and the positioning part is used to clamp the left and right end faces of the bearing ring to limit the movement of the bearing ring; the support part, the support part corresponds to each expansion and contraction device, the support part moves left and right and is assembled on the pressure roller and rotates with the expansion and contraction device, and a hole groove is formed between the two support parts; a linear drive part, the linear drive part is used to drive each expansion and contraction device to move left and right so that the pressure roller extends into or out of the bearing ring; the motor, the motor is used to drive each expansion and contraction device to rotate, so as to drive the bearing ring to rotate so that the next hole position is aligned with the drill bit up and down. The device is provided with two expansion and contraction devices opposite to each other on the workbench. The expansion and contraction devices are driven to move left and right by a linear drive member so that the pressure roller extends into the bearing ring, and the pressure rollers are driven to move radially along the mounting plate by a linear drive mechanism so that the outer surface of the pressure roller generates a pressing force on the inner wall of the bearing ring to fix the bearing ring; when drilling the bearing ring, the support member can support the inner wall of the drilling position of the bearing ring to avoid deformation or vibration caused by concentrated force at the drilling position of the bearing ring when the drill penetrates the bearing ring from top to bottom, which can significantly improve the processing quality and ensure the reliability of the product; when rotation is required after drilling, the expansion and contraction device fixed with the bearing ring is driven by a motor to rotate, so as to drive the bearing ring to rotate so that the next hole position is aligned with the drill bit up and down, and then the expansion and contraction device releases the bearing ring, the positioning member limits the movement of the bearing ring, and the motor drives the expansion and contraction device to drive the support member to reset, so as to fix and support the next drilling process, which can adapt to the positioning and drilling needs of different positions.

Preferably, the positioning member has a limiting surface facing the end surface of the bearing ring, and an elastic telescopic rod is provided between the positioning member and the workbench, and the elastic telescopic rod is used to apply elastic force to the positioning member so that the limiting surface limits the movement of the bearing ring. This is convenient for limiting the movement of the bearing ring when the expansion and contraction device releases the bearing ring, so as to improve the accuracy of the drilling position.

Preferably, the linear drive mechanism includes a linear drive component 2 installed on the mounting disk and a center column coaxially arranged with the mounting disk, and the plurality of pressure rollers are spaced circumferentially along the mounting disk to form a plurality of roller groups, and the plurality of pressure rollers in each roller group are flexibly connected by chains; the expansion and contraction device also includes a plurality of first connecting rods, one end of the first connecting rod is hinged to the pressure roller, and the other end of the first connecting rod is assembled on the center column through an articulated seat to move circumferentially along the center column, and the linear drive component 2 is used to drive the center column to move left and right, so that the articulated seat drives the pressure roller to move radially along the mounting disk through the first connecting rod.

Preferably, the mounting plate has limiting grooves corresponding to the roller groups one by one, and one of the pressure rollers of each roller group is radially guided along the mounting plate and movable and limited to the left and right to be assembled in the limiting groove.

Preferably, the expansion and contraction device further comprises a plurality of second connecting rods, one end of which is hinged to the pressure roller, and the other end of which is assembled on the central column by a reinforcing seat and moves along the circumference of the central column. The second connecting rod is used to support the pressure roller together with the first connecting rod to form a parallelogram mechanism, thereby improving the stability and reliability of the pressure roller.

Preferably, the positioning device for bearing ring processing also includes a movable table assembled on the workbench for left-right movement and a linear drive component driving the movable table to move left-right. The drill bit is mounted on the movable table to move left-right with the movable table; a positioning rod is rotatably connected to the lower bottom surface of the movable table, and the support component is assembled on a pressure roller in the upper limiting groove for left-right movement. The support component has a matching rod assembled in the matching rod for up-and-down movement, and a spring is provided between the matching rod and the mounting plate.

Preferably, the positioning device for bearing ring processing further includes a chip removal member, which is sleeved outside the pressure roller below, and has an arc-shaped surface that fits the inner wall of the bottom end of the bearing ring. When the linear drive member drives each expansion and contraction device to move left and right, the pressure roller drives the chip removal member to move left and right, so that the arc-shaped surface of the chip removal member removes the debris that falls on the inner wall of the bottom end of the bearing ring. The debris that falls into the bearing ring can be cleaned synchronously when the drilling is completed, which is conducive to improving work efficiency.

Preferably, a protruding plate is fixed on the chip removal member, and when the chip removal member extends out of the bearing ring along with the pressure roller, the protruding plate can push the positioning member away from the bearing ring to release the limiting effect of the positioning member on the bearing ring.

Preferably, the main body of the pressure roller is a cylinder made of metal material, and the outside of the cylinder is coated with elastic material. The metal material is used to ensure that the pressure roller has good strength and durability, and the elastic material has certain elasticity and adaptability. The elastic deformation of the elastic material when compressed generates a reverse force, so that the pressure roller has a moderate pressing force on the inner wall of the bearing ring, which can prevent the bearing ring from loosening and prevent the bearing ring from being deformed due to over-tightening.

By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the linear drive mechanism drives each pressure roller to move radially along the mounting disk, so that the outer surface of the pressure roller generates a pressing force on the inner wall of the bearing ring, and the multiple pressure rollers of the expansion and contraction device act on the bearing ring synchronously, forming a stable and uniform expansion force that is not easy to loosen on the bearing ring, effectively preventing the bearing ring from loosening during the drilling process, and can also reduce local pressure and adapt to bearing rings of different sizes; when drilling the bearing ring, the support member can support the inner wall of the drilling position of the bearing ring, so as to avoid the concentrated pressure on the drilling position of the bearing ring when the drill bit penetrates the bearing ring from top to bottom The force causes deformation or vibration, which can significantly improve the processing quality and ensure the reliability of the product. When rotation is required after drilling, the expansion and contraction device with the bearing ring fixed thereon is driven by a motor to rotate, so as to drive the bearing ring to rotate so that the next hole position is aligned with the drill bit up and down, with good adjustment stability and high precision. Then the expansion and contraction device releases the bearing ring, and the positioning part limits the movement of the bearing ring. The motor drives the expansion and contraction device to drive the support part to reset, so as to fix and support the next drilling process, which can adapt to the positioning and drilling needs of different positions. The debris that falls into the bearing ring can also be cleaned up synchronously at the end of drilling, which is beneficial to improving work efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a positioning device for machining a bearing ring according to the present invention.

FIG. 2 is a cross-sectional view of a positioning device for machining a bearing ring according to the present invention.

FIG. 3 is a schematic structural diagram of the expansion and contraction device of the positioning device for bearing ring processing of the present invention.

4 is a cross-sectional view of the expansion and contraction device of the positioning device for machining a bearing ring according to the present invention.

FIG. 5 is a schematic structural diagram of a support member of a positioning device for machining a bearing ring according to the present invention.

Reference numerals:

10. Workbench; 20. Bearing ring; 30. Drill bit; 310. Moving table; 311. Alignment rod; 320. Linear drive component three; 40. Mounting plate; 410. Linear drive component one; 420. Motor; 430. Limiting groove; 440. Arc groove; 50. Pressure roller; 510. Chain; 520. Linear drive component two; 530. Center column; 531. Circumferential groove; 540. First connecting rod; 541. Articulated seat; 550. Second connecting rod; 551. Reinforcement seat; 60. Support member; 610. Alignment groove; 620. Matching rod; 630. Spring; 70. Positioning member; 710. Elastic telescopic rod; 80. Chip removal member; 810. Extension plate; 90. Placement table.

DETAILED DESCRIPTION

Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

As shown in Figures 1 and 2, the positioning device for bearing ring processing of the present invention includes a workbench 10, a drill bit 30, a movable table 310, a linear drive member 320, an expansion and contraction device, a linear drive member 410, a motor 420, a support member 60, an alignment rod 311, a positioning member 70, a chip removal member 80 and a placement table 90.

The movable table 310 is assembled on the workbench 10 for left-right movement, the drill bit 30 is mounted on the movable table 310 to move left-right with the movable table 310, the linear drive component 320 is a cylinder, the linear drive component 320 is mounted on the workbench 10, the output end of the linear drive component 320 is connected to the movable table 310, and is used to drive the movable table 310 to move left-right, so as to change the position of the drill bit 30 in the left-right direction, so as to facilitate the drill bit 30 to drill holes at various axial positions of the bearing ring 20. In other embodiments, the linear drive component 320 can also be a hydraulic cylinder or an electric push rod.

As shown in Fig. 1 to Fig. 4, two expansion and contraction devices are arranged on the workbench 10 opposite to each other. Each expansion and contraction device includes a linear drive mechanism, a mounting plate 40, a pressure roller 50 extending left and right, a first connecting rod 540 and a second connecting rod 550, wherein the linear drive mechanism includes a linear drive member 520 mounted on the mounting plate 40 and a center column 530 coaxially arranged with the mounting plate 40.

The main part of the pressure roller 50 is a cylinder made of metal material, such as carbon steel, alloy steel or stainless steel, to ensure that the pressure roller 50 has good strength and durability. The outside of the cylinder is coated with elastic material, such as rubber, silicone or polyurethane. The elastic material has certain elasticity and adaptability. The elastic deformation of the elastic material when compressed generates a reverse force, so that the pressure roller 50 has a moderate pressing force on the inner wall of the bearing ring 20, which can prevent the bearing ring 20 from loosening and avoid deformation of the bearing ring 20 due to over-tightening.

A plurality of rollers 50 are spaced around the outer circumference of the central column 530 to form a plurality of roller groups. The plurality of rollers 50 of each roller group are flexibly connected by a chain 510, so that the plurality of rollers 50 are flexible in the extension direction of the chain 510, and can adapt to the bearing rings 20 of different sizes to fit their inner walls. In the length direction of the rollers 50, each roller 50 can maintain a strong rigid force to form a stable support structure. There are four roller groups in the embodiment, the roller group located at the top includes seven rollers 50, and the other three roller groups each include three rollers 50. The mounting plate 40 is assembled on the workbench 10 so as to be movable left and right. The mounting plate 40 has limiting grooves 430 corresponding to the roller groups one by one. The pressure rollers 50 in the middle of each roller group are radially guided along the mounting plate 40 and are assembled in the limiting grooves 430 so as to be movable left and right. The limiting grooves 430 are in the shape of long strips extending radially along the mounting plate 40. The pressure rollers 50 in the middle of each roller group are in the shape of cylinders with a diameter greater than the width of the limiting grooves 430 on the left and right sides of the limiting grooves 430 so as to limit the movement of the pressure rollers 50 in the left and right directions.

The first connecting rod 540 is arranged in one-to-one correspondence with the pressure roller 50, one end of the first connecting rod 540 is hinged to the pressure roller 50, and the other end of the first connecting rod 540 is assembled on the center column 530 by moving along the circumference of the center column 530 through the hinge seat 541. The second connecting rod 550 is arranged in one-to-one correspondence with the pressure roller 50, and the second connecting rod 550 is arranged in parallel with the corresponding first connecting rod 540, one end of the second connecting rod 550 is hinged to the pressure roller 50, and the other end of the second connecting rod 550 is assembled on the center column 530 by moving along the circumference of the center column 530 through the reinforcement seat 551. The second connecting rod 550 is used to support the pressure roller 50 together with the first connecting rod 540 to form a parallelogram mechanism to improve the stability and reliability of the pressure roller 50. The outer peripheral side of the center column 530 in the embodiment is provided with two circumferential grooves 531, which are respectively used to install the articulated seat 541 and the reinforced seat 551, wherein the articulated seat 541 and the reinforced seat 551 connected to the pressure roller 50 in the middle of each roller group are respectively fixedly installed in the circumferential groove 531 to limit the movement of the pressure roller 50 in the middle of each roller group along the circumferential groove 531, thereby improving the stability and supporting strength of each roller group, and the remaining articulated seats 541 and reinforced seats 551 are respectively movably assembled in the circumferential groove 531, so that the multiple pressure rollers 50 of each roller group can expand and contract relative to the center column 530.

The second linear drive member 520 is a hydraulic cylinder, and the output end of the second linear drive member 520 is connected to the center column 530, and is used to drive the center column 530 to move left and right, so that the hinge seat 541 drives the pressure roller 50 to move radially along the mounting plate 40 through the first connecting rod 540, so that the outer surface of the pressure roller 50 generates a pressing force on the inner wall of the bearing ring 20 to fix the bearing ring 20. In other embodiments, the second linear drive member 520 can also be an electric push rod or a cylinder.

The linear drive member 410 corresponds to each expansion and contraction device and is installed on the workbench 10. The linear drive member 410 is a hydraulic cylinder. The output end of the linear drive member 410 is connected to the mounting plate 40 to drive each expansion and contraction device to move left and right so that the pressure roller 50 extends into or out of the bearing ring 20. In other embodiments, the linear drive member 410 can also be an electric push rod or a cylinder.

The motor 420 corresponds to each expansion and contraction device and is installed on the workbench 10. The output end of the motor 420 is connected to the mounting plate 40 to drive each expansion and contraction device to rotate, thereby driving the bearing ring 20 to rotate so that the next hole position is aligned with the drill bit 30 up and down.

As shown in Fig. 1 to Fig. 5, two support members 60 are arranged on the workbench 10 opposite to each other, and each support member 60 is movably sleeved in the pressure roller 50 in the upper limiting groove 430. In the embodiment, the length of the pressure roller 50 in the upper limiting groove 430 is smaller than that of other pressure rollers 50, so as to facilitate the installation of the support member 60. The two support members 60 are abutted to each other, and a hole groove 610 is formed at the abutment between the two. Two alignment rods 311 are opposite to each other and hinged to the lower bottom surface of the movable platform 310. The support member 60 has a matching rod 620 that is assembled in the alignment rod 311 and moves up and down. A spring 630 is provided between the matching rod 620 and the mounting plate 40. The spring 630 is used to keep the support member 60 and the mounting plate 40 elastically connected. As a result, the support member 60 rotates with the expansion and contraction device and moves left and right with the drill bit 30, so that the hole groove 610 and the drill bit 30 are always aligned up and down, so that the drill bit 30 can be inserted into the hole groove 610 when it moves downward, and the support member 60 supports the inner wall of the drilling position of the bearing ring 20, so as to avoid deformation or vibration caused by concentrated force at the drilling position of the bearing ring 20 when the drill bit 30 penetrates the bearing ring 20 from top to bottom, which can significantly improve the processing quality and ensure the reliability of the product.

Four positioning members 70 are arranged on the workbench 10 in a left-right direction, each positioning member 70 has a limiting surface facing the end surface of the bearing ring 20, and an elastic telescopic rod 710 is arranged between each positioning member 70 and the workbench 10. The elastic telescopic rod 710 is used to apply elastic force to the positioning member 70 so that the limiting surface limits the movement of the bearing ring 20, and is also convenient for positioning the bearing ring 20 in the left-right direction. The limiting surface of the positioning member 70 in the embodiment is made of elastic material, such as rubber, silicone or polyurethane, so that the clamping force of the positioning member 70 on the end surface of the bearing ring 20 is moderate, the mounting plate 40 has an arc groove 440 extending along the circumference of the mounting plate 40, and the elastic telescopic rod 710 passes through the arc groove 440. When the motor 420 drives the mounting plate 40 to rotate, the arc groove 440 can rotate around the center of the mounting plate 40 relative to the elastic telescopic rod 710 to avoid the elastic telescopic rod 710 hindering the rotation of the mounting plate 40.

Two chip removal parts 80 are arranged on the workbench 10 opposite to each other. Each chip removal part 80 is mounted on the outside of the three pressure rollers 50 of the lower roller group. The chip removal part 80 is made of elastic material, such as rubber, silicone or polyurethane, so that it has softness and deformability. The chip removal part 80 has an arc-shaped surface that fits the inner wall of the bottom end of the bearing ring 20. When the linear drive part 410 drives each expansion and contraction device to move left and right, the pressure roller 50 drives the chip removal part 80 to move left and right, so that the arc-shaped surface of the chip removal part 80 can clear out the debris that falls on the inner wall of the bottom end of the bearing ring 20, and the debris that falls into the bearing ring 20 can be cleaned up simultaneously at the end of drilling, which is conducive to improving work efficiency.

An extension plate 810 is fixed to the chip removal member 80 . When the chip removal member 80 extends out of the bearing ring 20 along with the pressure roller 50 , the extension plate 810 can push the positioning member 70 away from the bearing ring 20 to release the positioning member 70 from limiting the bearing ring 20 .

The placement table 90 is disposed on the workbench 10 , and the upper surface of the placement table 90 is a plane for placing the bearing ring 20 .

The working process of the embodiment of the positioning device for bearing ring processing of the present invention comprises the following steps:

The first step is clamping. Place the bearing ring 20 on the placement table 90 and start the linear drive member 410. The linear drive member 410 drives the mounting plate 40 to move left and right so that the two expansion and contraction devices are close to each other and the pressure roller 50 is extended into the bearing ring 20. The four positioning members 70 clamp the bearing ring 20 from the left and right sides of the bearing ring 20 under the elastic force of the elastic telescopic rod 710, so that the bearing ring 20 is located in the middle position of the left and right direction of the workbench 10; the support member 60 moves with the mounting plate 40 through the spring 630 until the matching rod 620 is located below the alignment rod 311, and the hole groove 610 is aligned with the drill bit 30 up and down.

The second step is to fix and start the linear drive component 2 520. The linear drive component 2 520 drives the center column 530 to move left and right so that the two center columns 530 move away from each other, and the hinge seat 541 drives the pressure roller 50 to move outside the mounting plate 40 through the first connecting rod 540, so that the outer surface of each pressure roller 50 generates a clamping force on the inner wall of the bearing ring 20 to fix the bearing ring 20, and the support component 60 moves up with the pressure roller 50 to the matching rod 620 and extends into the alignment rod 311.

The third step is drilling. The drill bit 30 is moved downward and inserted into the hole groove 610 to drill holes in the bearing ring 20 .

The fourth step is alignment. Start the motor 420, which drives the mounting plate 40 to rotate so that the expansion and contraction device drives the bearing ring 20 to rotate to the next hole position and align it with the drill bit 30 up and down. When the mounting plate 40 rotates, the matching rod 620 remains extended into the alignment rod 311.

The fifth step is to reset. Start the second linear drive member 520. The second linear drive member 520 drives the center column 530 to move left and right so that the two center columns 530 are close to each other, and the hinge seat 541 drives the pressure roller 50 to move into the mounting plate 40 through the first connecting rod 540, so that each pressure roller 50 releases the clamping force on the bearing ring 20 to loosen the bearing ring 20, and the four positioning members 70 clamp the bearing ring 20 to limit the movement of the bearing ring 20; start the motor 420, and the motor 420 drives the mounting plate 40 to reverse, so that the expansion and contraction device is reset to the vertical alignment of the hole groove 610 and the drill bit 30; start the second linear drive member 520. The second linear drive member 520 drives the center column 530 to move left and right so that the two center columns 530 are away from each other, so that each pressure roller 50 fixes the bearing ring 20 again.

The sixth step is drilling. The drill bit 30 is moved downward and inserted into the hole groove 610 to drill holes in the bearing ring 20 .

The seventh step is unloading. Repeat the fifth to seventh steps until the punching is completed. Start the linear drive member 2 520. The linear drive member 2 520 drives the center column 530 to move left and right so that the two center columns 530 are close to each other, so that each pressure roller 50 loosens the bearing ring 20, and the support member 60 moves down with the pressure roller 50 to the matching rod 620 and extends out from the alignment rod 311 to disengage; start the linear drive member 1 410. The linear drive member 1 410 drives the mounting plate 40 to move left and right so that the two expansion and contraction devices are away from each other. The support member 60 moves away from the bearing ring 20 with the mounting plate 40 through the spring 630. The chip removal member 80 moves with the pressure roller 50 and clears the debris on the inner wall of the bottom end of the bearing ring 20. The extending plate 810 pushes the positioning member 70 away from the bearing ring 20, releases the limit on the bearing ring 20, and removes the bearing ring 20 from the placement table 90.

In this way, the device is provided with two expansion and contraction devices opposite to each other on the workbench 10, and each pressure roller 50 is driven to move radially along the mounting plate 40 by a linear drive mechanism, so that the outer surface of the pressure roller 50 generates a pressing force on the inner wall of the bearing ring 20, and the multiple pressure rollers 50 of the expansion and contraction device act on the bearing ring 20 synchronously, forming a stable and uniform expansion force that is not easy to loosen on the bearing ring 20, effectively preventing the bearing ring 20 from loosening during the drilling process, and can also reduce local pressure and adapt to bearing rings 20 of different sizes; when drilling the bearing ring 20, the support member 60 can support the inner wall of the drilling position of the bearing ring 20, so as to prevent the bearing ring 20 from being damaged when the drill bit 30 penetrates the bearing ring 20 from top to bottom. The punching position is subjected to concentrated force and deforms or vibrates, which can significantly improve the processing quality and ensure the reliability of the product. When rotation is required after punching, the expansion and contraction device fixed with the bearing ring 20 is driven by the motor 420 to rotate, so as to drive the bearing ring 20 to rotate so that the next hole position is aligned with the drill bit 30 up and down, with good adjustment stability and high precision. Then the expansion and contraction device releases the bearing ring 20, and the positioning member 70 limits the movement of the bearing ring 20. The motor 420 drives the expansion and contraction device to drive the support member 60 to reset, so as to fix and support the next punching process, which can adapt to the positioning and punching requirements at different positions. The debris that falls into the bearing ring 20 can also be cleaned up synchronously at the end of drilling, which is conducive to improving work efficiency.

In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims (9)

1. A positioning device for bearing ring processing, comprising a workbench (10) and a drill bit (30) arranged on the workbench (10), characterized in that it also includes: An expansion and contraction device, wherein two expansion and contraction devices are arranged on the workbench (10) opposite to each other on the left and right sides, the expansion and contraction device comprising a linear drive mechanism, a mounting plate (40) and a plurality of pressure rollers (50) extending left and right, the pressure rollers (50) being radially guided along the mounting plate (40) and being movable and limited left and right on the mounting plate (40), the linear drive mechanism being used to drive each pressure roller (50) to move radially along the mounting plate (40) so that the outer surface of the pressure roller (50) generates a pressing force against the inner wall of the bearing ring (20) to fix the bearing ring (20); Positioning members (70), the positioning members (70) being arranged on the workbench (10) on the left and right sides thereof, and the positioning members (70) being used to clamp the left and right end faces of the bearing ring (20) to limit the movement of the bearing ring (20); A support member (60), the support member (60) corresponding to each expansion and contraction device, the support member (60) being assembled on the pressure roller (50) so as to move left and right and rotate along with the expansion and contraction device, and a hole groove (610) being formed between two of the support members (60); A linear drive member (410), the linear drive member (410) being used to drive each expansion and contraction device to move left and right, so that the pressure roller (50) extends into or out of the bearing ring (20); A motor (420) is used to drive each expansion and contraction device to rotate, so as to drive the bearing ring (20) to rotate so that the next hole position is aligned with the drill bit (30) in the vertical direction. 2. A positioning device for bearing ring processing according to claim 1, characterized in that the positioning member (70) has a limiting surface facing the end face of the bearing ring (20), and an elastic telescopic rod (710) is provided between the positioning member (70) and the workbench (10), and the elastic telescopic rod (710) is used to apply an elastic force to the positioning member (70) so that the limiting surface limits the movement of the bearing ring (20). 3. A positioning device for bearing ring processing according to claim 1, characterized in that the linear drive mechanism comprises a linear drive member 2 (520) mounted on the mounting plate (40) and a center column (530) coaxially arranged with the mounting plate (40), and a plurality of pressure rollers (50) are spaced apart along the circumference of the mounting plate (40) to form a plurality of roller groups, and a plurality of pressure rollers (50) of each roller group are flexibly connected by a chain (510); The expansion and contraction device also includes a plurality of first connecting rods (540), one end of the first connecting rod (540) is hinged to the pressure roller (50), and the other end of the first connecting rod (540) is assembled on the central column (530) through an articulated seat (541) so as to move circumferentially along the central column (530), and the second linear drive member (520) is used to drive the central column (530) to move left and right, so that the articulated seat (541) drives the pressure roller (50) to move radially along the mounting plate (40) through the first connecting rod (540). 4. A positioning device for bearing ring processing according to claim 3, characterized in that the mounting plate (40) has limiting grooves (430) corresponding to the roller groups one by one, and one of the pressure rollers (50) of each roller group is radially guided along the mounting plate (40) and is movable left and right in a limiting manner and assembled in the limiting groove (430). 5. A positioning device for bearing ring processing according to claim 3, characterized in that the expansion and contraction device also includes a plurality of second connecting rods (550), one end of the second connecting rod (550) is hinged to the pressure roller (50), and the other end of the second connecting rod (550) is assembled on the center column (530) through a reinforcing seat (551) along the circumferential movement of the center column (530). 6. A positioning device for bearing ring processing according to claim 4, characterized in that the positioning device for bearing ring processing further comprises a movable table (310) assembled on the workbench (10) for left-right movement and a linear drive member (320) for driving the movable table (310) to move left-right, and the drill bit (30) is mounted on the movable table (310) to move left-right with the movable table (310); The bottom surface of the movable platform (310) is rotatably connected to a positioning rod (311); the support member (60) is assembled on the pressure roller (50) in the upper limiting groove (430) so as to move left and right; the support member (60) has a matching rod (620) which is assembled in the positioning rod (311) so as to move up and down; a spring (630) is provided between the matching rod (620) and the mounting plate (40). 7. A positioning device for bearing ring processing according to claim 2, characterized in that the positioning device for bearing ring processing also includes a chip removal member (80), the chip removal member (80) is mounted outside the lower pressure roller (50), the chip removal member (80) has an arc surface that fits the inner wall of the bottom end of the bearing ring (20), and when the linear drive member (410) drives each expansion and contraction device to move left and right, the pressure roller (50) drives the chip removal member (80) to move left and right, so that the arc surface of the chip removal member (80) can clear out the debris that falls on the inner wall of the bottom end of the bearing ring (20). 8. A positioning device for bearing ring processing according to claim 7, characterized in that a protruding plate (810) is fixed on the chip removal member (80), and when the chip removal member (80) extends out of the bearing ring (20) along with the pressure roller (50), the protruding plate (810) can push the positioning member (70) away from the bearing ring (20) to release the limiting effect of the positioning member (70) on the bearing ring (20). 9. A positioning device for bearing ring processing according to any one of claims 1 to 3, characterized in that the main body of the pressure roller (50) is a cylinder made of metal material, and the outside of the cylinder is coated with elastic material.