Grinding device for precision bearing machining and grinding process of grinding device

Abstract

The invention relates to the technical field of bearing machining, and particularly discloses a grinding device for precision bearing machining and a grinding process thereof, the grinding device comprises a guide wheel, a supporting plate and a bearing fixing component, the bearing fixing component comprises a mounting sleeve and multiple sets of abutting assemblies arranged in the axial direction of the mounting sleeve, and each set comprises two abutting assemblies; the abutting assembly comprises an elastic telescopic rod sliding in the radial direction of the mounting sleeve, abutting rods abutting against the inner wall of the bearing ring are hinged to the end of the elastic telescopic rod, and when the two abutting rods in the same set fix the bearings, the side faces of the two bearings abut against each other; all the elastic telescopic rods are driven by the driving piece to move towards the inner diameter position of the mounting sleeve until the abutting rods make contact with the inner walls of the bearings, the elastic telescopic rods can adapt to the bearings with different inner diameters, the abutting rods are hinged to the elastic telescopic rods, the abutting rods can make contact with the inner walls of the bearings with different contact angles, and therefore the contact angle between the abutting rods and the bearings is increased. And bearings with different contact angles can be clamped.

Description

Technical Field

[0001] The invention relates to the technical field of bearing grinding, and in particular to a grinding device for precision bearing processing and a grinding process thereof. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element, and cage. When rolling bearings are actually used, they will wear out, so it is necessary to clamp the rolling bearings and re-grind the inner ring of the rolling bearings.

[0003] A Chinese patent document with authorization announcement number CN111300214B discloses a bearing ring outer surface grinding device for bearing processing and manufacturing, including a processing platform and a bearing ring outer surface grinding device arranged on the processing platform. The processing platform is composed of a grinding platform and a positioning platform arranged in the central area of ​​the grinding platform, and the positioning platform is rotatably installed in an assembly groove arranged in the central area of ​​the grinding platform, and the positioning platform is concentrically distributed with the grinding platform. The bearing ring outer surface grinding device is composed of a positioning mechanism for pressing and positioning the inner surface of the bearing ring and a grinding mechanism for grinding the outer surface of the bearing ring. The positioning mechanism is installed on the positioning platform. The invention has a simple structure and can efficiently grind the outer walls of bearing rings of different models, thereby improving the grinding efficiency and grinding quality and bringing convenience to production.

[0004] In the above patent document, multiple bearings are spaced and clamped by setting spacing units, abutting units, adjusting units, etc. between multiple bearings. When the inner wall of the bearing is abutted by the ball, if it is a deep groove ball bearing, the inner wall of the bearing ring can be abutted, but if it is a tapered roller bearing, its inner wall is difficult to clamp. Since the inner wall of the outer ring of the bearing is inclined, it is difficult to clamp the inner wall of the bearing by setting the ball. The bearing is axially positioned by setting the spacing unit. After the bearing is polished, the bearing and the spacing unit need to be disassembled one by one, which is more troublesome. Summary of the invention

[0005] The present invention provides a grinding device for precision bearing processing and a grinding process thereof, aiming to solve the problem in the related art that the bearing grinding device can only perform clamping and grinding on the inner walls of some types of bearings.

[0006] A grinding device for precision bearing processing comprises: a guide wheel, a support plate and a bearing fixing component, the bearing fixing component comprises a mounting sleeve and a plurality of abutment components arranged along the axial direction of the mounting sleeve, each group of the abutment components is provided with two, the abutment components comprises an elastic telescopic rod sliding along the radial direction of the mounting sleeve, the end of the elastic telescopic rod is hinged with an abutment rod abutting the inner wall of the bearing ring, when the same group of two abutment rods fix the bearing, the side surfaces of the two bearings abut against each other, the bearing fixing component also comprises a driving member, the driving member is used to drive the elastic telescopic rods on all the abutment components to move synchronously along the radial direction of the mounting sleeve, and the abutment rods can be extended into the mounting sleeve when they are close to the axis center of the mounting sleeve.

[0007] The beneficial effects of the present invention are as follows: when processing bearings, bearings with the same outer diameter, different inner diameters and contact angles can all be clamped, and after the processing is completed, the abutment rod extends into the installation sleeve, so that the bearing can be completely removed at one time.

[0008] Preferably, a slot is provided on the mounting sleeve, and the elastic telescopic rod includes a mounting plate that slides in the slot along the radial direction of the mounting sleeve, a movable rod is slidably arranged in the mounting plate, a spring is installed between the mounting plate and the movable rod, one end of the spring is fixedly arranged on the mounting plate, and the other end is fixedly arranged on the movable rod; bearings of different sizes can be fixed.

[0009] Preferably, the abutment rod is rotatably arranged on the movable rod, and a torsion spring is installed between the abutment rod and the movable rod; bearings with different contact angles can be fixed.

[0010] Preferably, the driving member includes a plurality of rotating disks, each of which is provided with an arc groove extending from the center of the rotating disk to the outer circle, a slider fixed on the mounting plate is slidably arranged in the arc groove, and a connecting rod is connected between the plurality of rotating disks to clamp the bearing.

[0011] Preferably, the connecting rod and the mounting sleeve are threadedly connected to fix the connecting rod and the mounting sleeve.

[0012] Preferably, each abutment assembly includes three slots evenly distributed along the circumference of the mounting sleeve, an elastic telescopic rod is slidably arranged in each slot, and three arc-shaped slots are arranged on the rotating disk, so that the bearing fixation is more stable.

[0013] Preferably, the side of the abutment rod close to the bearing is arc-shaped to prevent the bearing from being scratched.

[0014] A grinding method for precision bearing machining, using the above-mentioned grinding device, comprises the following steps: S1. Two bearings of the same size are grouped together and are respectively sleeved on multiple groups of abutment components on the mounting sleeve; S2, the elastic telescopic rod is driven by the driving member to move toward the inner wall of the bearing until the abutting rod contacts the inner wall of the bearing, thereby being able to fix bearings of different sizes and bearings of different contact angles, and the two bearings of the same group abut against each other to avoid axial movement, and then placed on the guide wheel for processing; S3. The driving member moves in the reverse direction to move the abutment rod in the reverse direction into the mounting sleeve, and the bearing is pushed to remove all the processed bearings.

[0015] When processing bearings, bearings with the same outer diameter, different sizes of inner diameters and contact angles can all be clamped. When processing bearings, two bearings in the same group abut against each other to prevent axial displacement of the bearings. At the same time, after the processing is completed, the abutment rod extends into the installation sleeve, so that the bearing can be completely removed at one time.

[0016] The beneficial effects of the present invention are: 1. When processing the bearings, place a group of bearings of the same size on the abutment assembly on the mounting sleeve. After all the bearings are placed, drive all the elastic telescopic rods to move toward the inner diameter of the mounting sleeve through the driving member until the abutment rod contacts the inner wall of the bearing. Due to the setting of the elastic telescopic rod, the elastic telescopic rod can adapt to bearings with different inner diameters; 2. The abutment rod and the elastic telescopic rod are hinged, and the abutment rod can contact the inner wall of the bearing with different contact angles, and can clamp the bearings with different contact angles; 3. The two bearings in the same group are in contact with each other after being fixed, which can avoid relative displacement of the bearings in the axial direction when processing the bearings; 4. After the processing is completed, the driving part moves in the opposite direction to make the abutment rod extend into the installation sleeve. When removing the bearing, push the bearing off the installation sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the bearing fixing component of the present invention.

[0019] Figure 3 It is a schematic structural diagram of a cross-section of the bearing fixing component of the present invention.

[0020] Figure 4 It is a schematic cross-sectional structure diagram of the bearing fixing component of the present invention from another perspective.

[0021] Figure 5 It is a schematic structural diagram of the driving member of the present invention.

[0022] Figure 6It is a structural schematic diagram of the elastic telescopic rod of the present invention.

[0023] Figure numerals: 1, guide wheel; 2, support plate; 3, bearing fixing component; 31, mounting sleeve; 311, slot; 32, elastic telescopic rod; 321, mounting plate; 322, movable rod; 323, spring; 324, torsion spring; 33, abutment rod; 34, driving member; 341, rotating disk; 342, arc groove; 343, slider; 344, connecting rod. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-Figure 6 As shown, a grinding device for precision bearing processing includes a guide wheel 1, a support plate 2 and a bearing fixing component 3. When the bearing is ground by a centerless grinder, the bearing fixing component 3 includes a mounting sleeve 31 and multiple sets of abutment components. When the bearing is ground, two bearings are placed on the abutment component as a group for fixing. After all the bearings are fixed, they are placed between the guide wheel 1 and the support plate 2 for transportation, and then placed on the grinding end of the centerless grinder for grinding. Bearings of different sizes are fixed by multiple sets of abutment components.

[0026] The abutment assembly includes an elastic telescopic rod 32, an abutment rod 33 and a driving member 34; the elastic telescopic rod 32 is evenly distributed along the axial direction of the mounting sleeve 31, and the abutment rod 33 is hinged at the movable end of the elastic telescopic rod 32. When the bearing is fixed, two bearings of the same size are grouped as a group, and the bearings are placed in the extended part of the elastic telescopic rod 32, and then the elastic telescopic rod 32 is driven to extend out of the mounting sleeve 31 through the driving member 34. Since the elastic telescopic rod 32 is elastic, it can adapt to bearings with different inner diameters when the elastic telescopic rod 32 is extended. At the same time, since the abutment rod 33 is hinged to the movable end of the elastic telescopic rod 32, when the bearing is fixed through the abutment rod 33, the abutment rod 33 can be rotated to adapt to different raceway angles.

[0027] In a specific embodiment of the present invention, a slot 311 is provided on the mounting sleeve 31, and the elastic telescopic rod 32 includes a mounting plate 321 that slides in the slot 311 along the radial direction of the mounting sleeve 31, and a movable rod 322 is slidably provided in the mounting plate 321, and a spring 323 is installed between the mounting plate 321 and the movable rod 322, and one end of the spring 323 is fixedly provided on the mounting plate 321, and the other end is fixedly provided on the movable rod 322; when fixing the bearings, a group of bearings of the same size are placed on the mounting sleeve 31, and the mounting sleeve is arranged according to the mounting plate 321. The slots 311 opened on 31 are used as the basis, and bearings of the same size are placed on two adjacent slots 311. Bearings of different sizes can be placed on different groups of elastic telescopic rods 32. After all the bearings are placed, the mounting plate 321 is slid toward the inner wall of the bearing. The bearing with a smaller inner diameter first contacts the abutment rod 33 and is clamped. At this time, the bearing with a larger inner diameter has not yet contacted the abutment rod 33. The mounting plate 321 continues to slide toward the inner wall of the bearing until all the bearings contact the abutment rod 33, and all the bearings are clamped.

[0028] In a preferred embodiment of the present invention, each abutment assembly includes three slots 311 evenly distributed along the circumference of the mounting sleeve 31. Correspondingly, the number of the mounting plates 321 is three, and the number of the abutment rods 33 is three. When fixing a bearing, the three abutment rods 33 can be driven by the driving member 34 to synchronously contact the inner wall of the bearing to fix the bearing. Three abutment rods 33 are arranged on each bearing for fixing, which makes the bearing more stable when fixed.

[0029] In a specific embodiment of the present invention, the abutment rod 33 is rotatably arranged on the movable rod 322, and a torsion spring 324 is installed between the abutment rod 33 and the movable rod 322; when the bearing is a tapered roller bearing, after the abutment rod 33 contacts the inner wall of the outer ring of the bearing, when the abutment rod 33 continues to move toward the inner wall of the bearing, the torsion spring 324 is twisted until the abutment rod 33 can fit on the inner wall of the bearing, and the contact angles of bearings of different groups are different. The abutment rod 33 can always contact with the inner wall of the bearing through the rotation of the abutment rod 33 to fix bearings with different contact angles; when a certain force is applied to the abutment rod 33 toward the bearing, the two bearings of the same group approach each other under the action of thrust until the two surfaces of the two bearings that are close to each other fit each other, and when the two bearings are fixed, two bearings of the same group with the same size are applied with opposite axial forces to avoid axial displacement of the bearings.

[0030] The side of the abutment rod 33 close to the bearing is arc-shaped and made of rubber; when the abutment rod 33 contacts the inner ring of the bearing, it can prevent the inner ring of the bearing from being scratched and increase the friction between the bearing and the abutment rod 33.

[0031] In a specific embodiment of the present invention, the driving member 34 includes a plurality of rotating disks 341, on which an arc groove 342 extending from the center of the rotating disk 341 to the outer circle is opened, and a slider 343 fixed on the mounting plate 321 is slidably arranged in the arc groove 342, and a connecting rod 344 is connected between the plurality of rotating disks 341, and the connecting rod 344 is threadedly connected to the mounting sleeve 31; when the bearing is fixed, the rotating disk 341 is driven to rotate by the rotation of the connecting rod 344, and when the rotating disk 341 rotates, the slider 343 slides in the arc groove 342, and then the mounting plate 321 slides in the slot 311, so that the abutting rod 33 clamps the bearing, and when all the bearings are clamped, the connecting rod 344 can be loosened, at this time, the connecting rod 344 is threadedly connected to the mounting sleeve 31, and the connecting rod 344 is self-locking to ensure that the bearing is always clamped when being processed.

[0032] In a preferred embodiment of the present invention, when the driving member 34 rotates in the opposite direction, the abutment rods 33 are moved closer to the axis of the mounting sleeve 31 until all the abutment rods 33 are inserted into the mounting sleeve 31; after the bearing is processed, the driving member 34 can make the abutment rods 33 extend into the mounting sleeve 31, and can push the bearing from one end so that all the bearings can be stacked together, which is more convenient when removing the bearings.

[0033] A grinding method for precision bearing machining, using the above-mentioned grinding device, comprises the following steps: S1. Bearings of the same size are grouped together and respectively sleeved on multiple groups of abutment components on the mounting sleeve 31; S2, the elastic telescopic rod 32 is driven by the driving member 34 to move toward the inner wall of the bearing until the abutting rod 33 contacts the inner wall of the bearing, thereby being able to fix bearings of different sizes and bearings of different contact angles, and the two bearings in the same group abut against each other to avoid axial movement, and then placed on the guide wheel 1 for processing; S3, the driving member 34 moves in the reverse direction, so that the abutting rod 33 moves in the reverse direction into the mounting sleeve 31, and the bearing is pushed to remove all the processed bearings.

[0034] When processing bearings, bearings with the same outer diameter, different sizes of inner diameters and contact angles can all be clamped. When processing bearings, two bearings in the same group abut against each other to prevent axial displacement of the bearings. At the same time, after the processing is completed, the abutment rod 33 extends into the mounting sleeve 31, so that the bearing can be completely removed at one time.

[0035] Specific working principle: When processing the bearings, a group of bearings of the same size are placed on the abutment assembly on the mounting sleeve 31. After all the bearings are placed, all the elastic telescopic rods 32 are driven by the driving member 34 to move toward the inner diameter of the mounting sleeve 31 until the abutment rod 33 contacts the inner wall of the bearing. Due to the setting of the elastic telescopic rod 32, the elastic telescopic rod 32 can adapt to bearings of different inner diameters. The abutment rod 33 and the elastic telescopic rod 32 are hinged. The abutment rod 33 can contact the inner wall of the bearing with different contact angles, and can clamp bearings with different contact angles; the two bearings of the same group contact each other after being fixed, and relative displacement of the bearings in the axial direction can be avoided when processing the bearings. After the processing is completed, the driving member 34 is moved in the opposite direction to make the abutment rod 33 extend into the mounting sleeve 31. When removing the bearing, the bearing can be pushed to be removed from the mounting sleeve 31.

[0036] 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

1. A grinding device for precision bearing processing, comprising a guide wheel (1), a support plate (2) and a bearing fixing component (3), characterized in that: The bearing fixing component (3) comprises a mounting sleeve (31) and a plurality of groups of abutment components arranged along the axial direction of the mounting sleeve (31), each group of the abutment components being provided with two abutment components, the abutment components comprising an elastic telescopic rod (32) sliding along the radial direction of the mounting sleeve (31), the end of the elastic telescopic rod (32) being hingedly connected to an abutment rod (33) abutting against the inner wall of the bearing ring, and when the two abutment rods (33) of the same group fix the bearing, the side surfaces of the two bearings abut against each other, the bearing fixing component (3) further comprises a driving member (34), the driving member (34) being used to drive the elastic telescopic rods (32) on all the abutment components to move synchronously along the radial direction of the mounting sleeve (31), and when the abutment rods (33) are close to the axis of the mounting sleeve (31), they can all extend into the mounting sleeve (31).

2. A grinding device for precision bearing processing according to claim 1, characterized in that: The mounting sleeve (31) is provided with a slot (311), and the elastic telescopic rod (32) comprises a mounting plate (321) that slides in the slot (311) along the radial direction of the mounting sleeve (31), and a movable rod (322) is slidably arranged in the mounting plate (321), and a spring (323) is installed between the mounting plate (321) and the movable rod (322), and one end of the spring (323) is fixedly arranged on the mounting plate (321), and the other end is fixedly arranged on the movable rod (322).

3. A grinding device for precision bearing processing according to claim 1, characterized in that: The abutment rod (33) is rotatably arranged on the movable rod (322), and a torsion spring (324) is installed between the abutment rod (33) and the movable rod (322).

4. A grinding device for precision bearing processing according to claim 1, characterized in that: The driving member (34) comprises a plurality of rotating disks (341), the rotating disks (341) being provided with arc-shaped grooves (342) extending from the center of the rotating disk (341) to the outer circle, a sliding block (343) fixed on the mounting plate (321) being slidably arranged in the arc-shaped grooves (342), and connecting rods (344) being connected between the plurality of rotating disks (341).

5. A grinding device for precision bearing processing according to claim 4, characterized in that: The connecting rod (344) is threadedly connected to the mounting sleeve (31).

6. A grinding device for precision bearing processing according to claim 4, characterized in that: Each abutment assembly comprises three slots (311) uniformly distributed along the circumference of the mounting sleeve (31), an elastic telescopic rod (32) is slidably arranged in each slot (311), and three arc-shaped slots (342) are provided on the rotating disk (341).

7. A grinding device for precision bearing processing according to claim 1, characterized in that: The side of the abutment rod (33) close to the bearing is arc-shaped.

8. A grinding method for precision bearing machining, using the grinding device according to any one of claims 1 to 7, comprising the following steps: S1, two bearings of the same size are grouped together and are respectively sleeved on multiple groups of abutment components on the mounting sleeve (31); S2, driving the elastic telescopic rod (32) to move toward the inner wall of the bearing through the driving member (34) until the abutting rod (33) contacts the inner wall of the bearing, thereby being able to fix bearings of different sizes and bearings of different contact angles, and two bearings in the same group abut against each other to avoid axial movement, and then being placed on the guide wheel (1) for processing; S3. The driving member (34) moves in the reverse direction, so that the abutting rod (33) moves in the reverse direction into the mounting sleeve (31), and the bearing is pushed to remove all the processed bearings.

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