Magnetic fixture with flexible positioning function for grinding bearing ring

Abstract

The invention relates to the technical field of bearing production, in particular to a bearing ring polishing magnetic fixture with a flexible positioning function, comprising: a support member, the peripheral side of which is provided with a plurality of support columns extending upward; the magnetic suction cup is horizontally arranged at the tops of all the supporting columns and used for adsorbing and fixing a to-be-ground bearing ring; the magnetic chuck is provided with at least two vertical sliding holes which are rotationally symmetrical; the flexible positioning assembly is provided with a plurality of flexible arm sets which are in sliding fit with the vertical sliding holes in a one-to-one correspondence mode, and each flexible arm set is provided with a flexible arm used for flexible positioning; the at least three flexible arms are arranged along the center of the magnetic suction cup, the flexible positioning assembly is used for conducting multi-point-position flexible positioning on the bearing ring to be ground, adsorption fixing of the magnetic suction cup is matched, and the height of the flexible positioning assembly is adjusted through the adjusting assembly; accurate positioning of the workpiece before grinding and stability and consistency in the grinding process are guaranteed, and machining precision is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearing production, and in particular to a magnetic suction fixture for grinding a bearing ring with a flexible positioning function. Background Art

[0002] In modern industrial production, bearings are widely used as key components. Especially in the field of high-precision mechanical equipment, extremely high requirements are placed on the processing accuracy of bearing rings. However, the traditional grinding process of bearing rings often relies on rigid fixtures for positioning and fixing. Although this method can meet basic processing requirements, it often faces problems such as inaccurate positioning and uneven distribution of clamping force when processing bearings with high-precision surface finish, resulting in unstable processing quality. Especially for some thin-walled bearing rings, it may even damage the workpiece.

[0003] In addition, traditional magnetic clamps are continuously powered during the entire working process to maintain the suction force, resulting in unnecessary energy waste and increased operating costs. Moreover, for bearing rings of different specifications and sizes, a complex adjustment process is often required, and sometimes even different clamps need to be replaced, which not only increases the difficulty of operation, but also prolongs the changeover time and reduces production efficiency.

[0004] Therefore, how to achieve a more flexible, efficient and energy-saving positioning method while ensuring high-precision processing has become an important challenge facing the current bearing manufacturing industry.

[0005] For this purpose, we designed a magnetic fixture for grinding bearing rings with flexible positioning function. Summary of the invention

[0006] In order to overcome the deficiencies in the background technology, the present invention discloses a magnetic suction fixture for grinding a bearing ring with a flexible positioning function.

[0007] To achieve the above object, the present invention adopts the following technical solution: A magnetic suction fixture for grinding a bearing ring with a flexible positioning function, comprising: A support member, the peripheral side of which is provided with a plurality of support columns extending upward; A magnetic suction cup is horizontally arranged on the top of all support columns, and is used to absorb and fix the bearing ring to be ground; the magnetic suction cup is provided with at least two rotationally symmetrical vertical sliding holes; A flexible positioning assembly, which has a plurality of flexible arm groups that are slidably matched in the vertical sliding holes in a one-to-one correspondence, and the flexible arm group has flexible arms for flexible positioning; An adjustment component, which has a connecting frame connected to all the flexible arm groups and an adjustment device capable of adjusting the height of the connecting frame, so that after the bearing ring to be ground is adsorbed and fixed, the height of the flexible arm group is adjusted downward to avoid the grinding area of ​​the bearing ring to be ground; The flexible positioning assembly has at least three flexible arms arranged along the center of the magnetic suction cup, so that the bearing ring to be ground can be squeezed through the deformation of at least three flexible arms, so that the bearing ring to be ground is centrally positioned.

[0008] Furthermore, the magnetic suction cup includes a central magnetic isolation block, and a plurality of extension parts which are evenly spaced around the central magnetic isolation block and are connected to the top of the support column in a one-to-one correspondence, the extension parts are provided with the vertical sliding holes, and a plurality of alternating arc-shaped magnetic suction blocks and magnetic isolation sheets are arranged in sequence from the inside to the outside between two adjacent extension parts.

[0009] Furthermore, the flexible arm set includes a base slidably connected to the vertical sliding hole, and the base has at least one mounting hole for detachably mounting the flexible arm.

[0010] Furthermore, the mounting holes are circular holes, and there are at least two of them, and each mounting hole is mounted with the flexible arm.

[0011] Furthermore, the mounting hole is an arc-shaped hole, and the center of the arc-shaped hole is located at the center of the magnetic chuck; the arc-shaped hole is movably matched with the flexible arm along its length direction; The flexible positioning assembly also includes a connecting rod, one end of which is connected to the bottom of the flexible arm, and the other end of which is rotatably connected to the middle of the bottom surface of the magnetic suction cup.

[0012] Furthermore, there are four vertical sliding holes; the inner ends of the two connecting rods corresponding to the two opposite flexible arms are fixedly connected.

[0013] Furthermore, the method for positioning the bearing ring to be ground by the flexible positioning assembly comprises the following steps: Step 1: Place the bearing to be ground on the inner or outer side of the circle formed by the flexible arm assembly, and press down the bearing ring to be ground so that the bottom surface fits the upper surface of the magnetic chuck; Step 2: Rotate one set of two opposite flexible arms to reciprocate along the length direction of the corresponding mounting hole for several times; Step 3: Rotate another set of two opposite flexible arms to reciprocate along the length direction of the corresponding mounting holes for several times; Step 4: Repeat steps 2 and 3 at least once.

[0014] Furthermore, the flexible arm comprises: A rigid connecting column, vertically mounted in the mounting hole; The flexible arm body is coaxially arranged on the top surface of the rigid connecting column; Among them, the flexible arm body is conical, and the diameter of the large head end of the flexible arm body is larger than the diameter of the rigid connecting column; the inner diameter of the circle formed by the large heads of all flexible arm bodies is smaller than the outer diameter of the bearing ring to be ground, or the outer diameter of the circle formed by the large heads of all flexible arm bodies is larger than the inner diameter of the bearing ring to be ground, and the inner diameter of the circle formed by the small heads of all flexible arm bodies is larger than the outer diameter of the bearing ring to be ground, or the outer diameter of the circle formed by the small heads of all flexible arm bodies is smaller than the inner diameter of the bearing ring to be ground.

[0015] Furthermore, the flexible arm is internally coated with an elastic cylinder coaxial therewith, so that the flexible arm can be quickly reset under the action of the elastic cylinder, thereby improving the response speed.

[0016] Furthermore, the outer surface of the flexible arm body has a wear-resistant layer.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By setting at least three flexible arms arranged along the center of the magnetic chuck, using the flexible positioning component to perform multi-point flexible positioning of the bearing ring to be ground, coordinating with the adsorption and fixation of the magnetic chuck, and adjusting the height of the flexible positioning component by the adjustment component, the precise positioning of the workpiece before grinding and the stability and consistency during the grinding process are ensured, effectively improving the processing accuracy; 2. The magnetic chuck is equipped with a central magnetic isolation block and a plurality of alternately arranged arc-shaped magnetic blocks and magnetic isolation sheets. When adsorbing and fixing the bearing ring to be ground, only the arc-shaped magnetic blocks in the contact part need to be energized, thereby reducing the overall energy consumption and saving operating costs; 3. The setting of the mounting holes, connecting rods and flexible arm structures can ensure that the flexible arms at different positions move alternately when positioning the workpiece, and ensure that all the flexible arms exert the same force on the workpiece through dynamic changes, thereby further improving the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the middle support member; Figure 3 for Figure 1 Schematic diagram of the structure of the middle magnetic chuck; Figure 4 for Figure 1 Schematic diagram of the assembly structure of the flexible positioning component and the adjustment component; Figure 5 for Figure 1 A schematic diagram of the assembly structure of the flexible positioning component and the adjustment component from another perspective; Figure 6 for Figure 1 Schematic diagram of the structure of the middle flexible arm Figure 7 A schematic diagram of another structure of the present invention; Figure 8 for Figure 7 Schematic diagram of the assembly structure of the flexible positioning component and the adjustment component; Fig. 9 for Figure 7 Schematic diagram of the assembly structure of the flexible positioning component and the adjustment component from another perspective.

[0019] In the figure: 1. support member; 11. support column; 2. magnetic suction cup; 21. central magnetic isolation block; 22. extension portion; 23. vertical sliding hole; 24. arc-shaped magnetic suction block; 25. magnetic isolation sheet; 3. flexible positioning assembly; 31. flexible arm group; 311. flexible arm; 3111. rigid connecting column; 3112. flexible arm body; 3113. elastic cylinder; 3114. wear-resistant layer; 312. base; 313. mounting hole; 314. connecting rod; 4. adjustment assembly; 41. connecting frame; 42. adjustment device. DETAILED DESCRIPTION

[0020] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end portion", "lateral", "lateral", "transverse", "longitudinal", etc. indicating directions or positional relationships, they only correspond to the length and width of the corresponding components, that is, the "end portion" indicates the head and tail areas in the length direction of the corresponding component, and the "side portion" indicates the head and tail areas in the width direction of the corresponding component; this is for the convenience of describing the present invention and is not to indicate or imply that the device or element referred to must have a specific direction.

[0021] Embodiment 1, in combination with the attached Figure 1-6 , a magnetic fixture for grinding a bearing ring with a flexible positioning function, comprising: The support member 1 has a plurality of support columns 11 extending upwardly disposed on its circumference; The magnetic suction cup 2 is horizontally arranged on the top of all the support columns 11 and is used to absorb and fix the bearing ring to be ground; the magnetic suction cup 2 is provided with at least two rotationally symmetrical vertical sliding holes 23.

[0022] As needed, combine with Figure 2 A step surface can be provided on the inner side surface of the top of the support column 11, and the side of the magnetic suction cup 2 is vertically positioned through the step surface, and then the magnetic suction cup 2 is fixed through a connecting piece, so that the magnetic suction cup 2 can be ensured to be level.

[0023] Combined with Figure 4-5The flexible positioning component 3 has a plurality of flexible arm groups 31 which are slidably matched in the vertical sliding holes 23 in a one-to-one manner, and the flexible arm groups 31 have flexible arms 311 for flexible positioning; wherein, the flexible positioning component 3 has at least three flexible arms 311 arranged along the center of the magnetic suction cup 2, so as to facilitate positioning of the bearing ring to be ground through at least three points.

[0024] That is, when there are only two vertical sliding holes 23 , at least one flexible arm group 31 has two flexible arms 311 ; when there are more than two vertical sliding holes 23 , such as three or four, the flexible arm group 31 may have only one flexible arm 311 .

[0025] Combined with Figure 4-5 , an adjusting component 4, which has a connecting frame 41 connected to all the flexible arm groups 31 and an adjusting device 42 capable of adjusting the height of the connecting frame 41, that is, after the bearing ring to be ground is adsorbed and fixed, the height of the flexible arm group 31 can be adjusted downward by the adjusting device 42, so that the height of the flexible arm group 31 is lower than the bottom of the track of the bearing ring to be ground. In this way, when the track of the bearing ring to be ground is finely ground and super-finely ground, the flexible arm group 31 will not interfere with the grinding head, so that the fine grinding and super-fine grinding operations of the track of the bearing ring to be ground can be completed in sequence.

[0026] In a possible implementation, the flexible arm assembly 31 includes a base 312 slidably connected to the vertical sliding hole 23 , and the base 312 has at least one mounting hole 313 for detachably mounting the flexible arm 311 .

[0027] In this embodiment, the flexible arm set 31 is connected to the connecting frame 41 via the base 312 .

[0028] In this embodiment, combined with the attached Figure 4-5 , the mounting holes 313 are round holes, and there are at least two of them, each of which is equipped with a flexible arm 311; that is, when there are only two vertical sliding holes 23, that is, when there are only two flexible arm groups 31, the flexible positioning assembly 3 has four points to position the bearing ring to be ground. In other words, the number of points at which the flexible positioning assembly 3 positions the bearing ring to be ground is twice the number of the vertical sliding holes 23.

[0029] It should be noted that the bottom of the flexible arm 311 has a deformation space, which can be understood as a gap between the edge of the flexible arm 311 and the base 312. Preferably, the height of the gap is 0.5-1 mm, which can not only limit the downward deformation of the large end of the flexible arm 311, but also ensure that the deformed part of the flexible arm 311 is pressed between the bearing ring to be ground and the magnetic suction cup, resulting in the bottom surface of the bearing ring to be ground and the upper disk surface of the magnetic suction cup not being completely fitted.

[0030] As required, in order to use different types of bearing rings, the base 312 can be provided with a plurality of mounting holes 313 at intervals along the radial direction of the magnetic suction cup, that is, different types of bearing rings can be used by cooperating with the mounting holes 313 at different positions and the flexible arm 311.

[0031] Embodiment 2, combined with the attached Figure 7-9 , a magnetic suction fixture for grinding a bearing ring with a flexible positioning function, which is different from the first embodiment in that: the mounting hole 313 is an arc hole, and the center of the arc hole is located at the center of the magnetic suction cup 2; the arc hole is movably matched with a flexible arm 311 along its length direction; The flexible positioning assembly 3 further includes a connecting rod 314 , one end of which is connected to the bottom of the flexible arm 311 , and the other end of which is rotatably connected to the middle of the bottom surface of the magnetic chuck 2 .

[0032] In this embodiment, the number of the vertical sliding holes 23 is at least three, that is, there are at least three groups of flexible arm groups 31. Preferably, the number of the vertical sliding holes 23 is three or four.

[0033] When there are four vertical sliding holes 23, the inner ends of the two connecting rods 314 corresponding to the two opposite flexible arms 311 can be fixedly connected. As needed, the two connecting rods 314 can be integrally formed, that is, the two ends of the connecting rod 314 are respectively connected to the corresponding two flexible arms 311, and the middle is rotatably connected to the middle of the bottom surface of the magnetic chuck 2.

[0034] When there are four vertical sliding holes 23, the method for positioning the bearing to be ground by the flexible positioning assembly 3 includes the following steps: Step 1: Place the bearing ring to be ground on the inner or outer side of the circle formed by the flexible arm group 31, and press the bearing ring to be ground downward so that the bottom surface is in contact with the upper surface of the magnetic chuck 2; Step 2: Rotate one set of two opposite flexible arms 311 to reciprocate along the length direction of the corresponding mounting hole 313 for several times; Step 3: Rotate another set of two opposite flexible arms 311 to reciprocate along the length direction of the corresponding mounting holes 313 for several times; Step 4: Repeat step 2 and step 3 at least once.

[0035] Furthermore, the sum of the number of reciprocating movements in step 2 and step 3 and the number of repetitions of step 4 is not less than three times; specifically, when the number of reciprocating movements in step 2 and step 3 is one, step 4 needs to be performed at least twice. When the number of reciprocating movements in step 2 and step 3 is two, step 4 can be performed only once.

[0036] It should be noted that: when in the present embodiment, the base 312 can be provided with multiple mounting holes 313 at intervals along the radial direction of the magnetic suction cup, the connecting rod 314 is provided with a waist-shaped hole along its axial direction at the position corresponding to the base 312. At this time, the bottom of the flexible arm 311 is connected to the waist-shaped hole through connecting parts such as bolts and nuts, ensuring that the connecting rod 314 can be connected to the bottom of the flexible arm 311 with mounting holes 313 located at different positions.

[0037] Embodiment 3, in combination with the attached Figure 3 A magnetic suction fixture for grinding bearing rings with a flexible positioning function is different from implementation one or two in that: the energy consumption of the magnetic suction cup is reduced, the magnetic suction cup 2 includes a central magnetic isolation block 21, and a plurality of extensions 22 connected to the top of the support column 11 are evenly spaced around the central magnetic isolation block 21, and the extensions 22 are provided with vertical sliding holes 23. Between two adjacent extensions 22, a plurality of arc-shaped magnetic suction blocks 24 and magnetic isolation sheets 25 are arranged alternately from the inside to the outside.

[0038] As required, the arc-shaped magnetic blocks 24 located on the same circle are assigned the same number.

[0039] In this way, when the bearing ring to be ground is adsorbed and fixed, only the arc-shaped magnetic suction block 24 in contact with the bearing ring to be ground can be energized to adsorb and fix the bearing ring to be ground, and the rest do not need to be energized.

[0040] It should be noted that the structure and electrical connection method of the arc-shaped magnetic block 24 are based on existing technologies and will not be described in detail here.

[0041] As required, the arc-shaped magnetic blocks 24 located on the same circle can be powered on and off by a control switch.

[0042] Combined with Figure 6 In some other embodiments, the flexible arm may also be configured as follows: The flexible arm 311 includes: A rigid connecting column 3111 is vertically mounted in the mounting hole 313; The flexible arm body 3112 is coaxially arranged on the top surface of the rigid connecting column 3111; as needed, the flexible arm body 3112 is made of a highly elastic non-magnetic material, such as polyurethane rubber, silicone or elastic plastic.

[0043] Among them, the flexible arm body 3112 is conical, and the diameter of the large end of the flexible arm body 3112 is larger than the diameter of the rigid connecting column 3111; the inner diameter of the circle formed by the large ends of all flexible arm bodies 3112 is smaller than the outer diameter of the bearing ring to be ground, or the outer diameter of the circle formed by the outer end is larger than the inner diameter of the bearing ring to be ground, and the inner diameter of the circle formed by the small ends of all flexible arm bodies 3112 is larger than the outer diameter of the bearing ring to be ground, or the outer diameter of the circle formed by the outer end is smaller than the inner diameter of the bearing ring to be ground.

[0044] Specifically, when the diameter of the circle formed by the inner side of the large head end of the flexible arm body 3112 is smaller than the outer diameter of the bearing ring to be ground, and the diameter of the circle formed by the inner side of the small head end of all the flexible arm bodies 3112 is larger than the outer diameter of the bearing ring to be ground, the outer annular surface of the bearing ring to be ground is positioned by the flexible arm 311; that is, the bearing ring to be ground is first placed on the inner side of the circle formed by the flexible arm group 31 and the bearing ring to be ground is pressed downward so that the bottom surface is in contact with the upper disk surface of the magnetic chuck 2. When the diameter of the circle formed by the inner side of the large head end of all the flexible arm bodies 3112 is larger than the inner diameter of the bearing ring to be ground, and the diameter of the circle formed by the inner side of the small head end of all the flexible arm bodies 3112 is smaller than the inner diameter of the bearing ring to be ground, the inner annular surface of the bearing ring to be ground is positioned by the flexible arm 311, that is, the bearing ring to be ground is first placed on the outer side of the circle formed by the flexible arm group 31, and the bearing ring to be ground is pressed downward so that the bottom surface is in contact with the upper disk surface of the magnetic chuck 2.

[0045] As required, the rigid connection column 3111 may be a cylinder with a threaded portion at the lower section, and the connection between the rigid connection column 3111 and the mounting hole 313 is achieved by the cooperation between the threaded portion and a nut.

[0046] Furthermore, the flexible arm 3112 is internally coated with an elastic cylinder 3113 coaxial therewith, so that the flexible arm 3112 can be quickly reset under the action of the elastic cylinder 3113, thereby improving the response speed.

[0047] As required, the elastic cylinder 3113 may be a spring or other forms of elastic elements.

[0048] Furthermore, the outer surface of the flexible arm 3112 has a wear-resistant layer 3114. The wear-resistant layer 3114 can be made of polyurethane or nylon that can maintain a certain degree of flexibility when used in a thin layer as required.

[0049] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A magnetic fixture for grinding a bearing ring with a flexible positioning function, characterized in that: include: A support member (1) having a plurality of support columns (11) extending upwardly provided on its circumferential side; A magnetic suction cup (2) is horizontally arranged on the top of all the support columns (11) and is used to absorb and fix the bearing ring to be ground; the magnetic suction cup (2) is provided with at least two rotationally symmetrical vertical sliding holes (23); A flexible positioning assembly (3), comprising a plurality of flexible arm groups (31) that are slidably matched in a one-to-one correspondence with the vertical sliding holes (23), wherein the flexible arm groups (31) have flexible arms (311) for flexible positioning; An adjustment assembly (4) comprising a connecting frame (41) connected to all the flexible arm groups (31) and an adjustment device (42) capable of adjusting the height of the connecting frame (41), so that after the bearing ring to be ground is adsorbed and fixed, the height of the flexible arm group (31) is adjusted downward to avoid the grinding area of ​​the bearing ring to be ground; The flexible positioning component (3) has at least three flexible arms (311) arranged along the center of the magnetic suction cup (2), so that the bearing ring to be ground can be squeezed through deformation of at least three flexible arms (311) so that the bearing ring to be ground is centrally positioned.

2. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 1 is characterized in that: The magnetic suction cup (2) comprises a central magnetic isolation block (21), a plurality of extensions (22) connected to the top of the support column (11) at even intervals around the central magnetic isolation block (21), the extensions (22) being provided with the vertical sliding holes (23), and a plurality of arc-shaped magnetic suction blocks (24) and magnetic isolation sheets (25) being alternately arranged in sequence from the inside to the outside between two adjacent extensions (22).

3. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 1 is characterized in that: The flexible arm group (31) comprises a base (312) slidably connected to the vertical sliding hole (23), and the base (312) has at least one mounting hole (313) for detachably mounting the flexible arm (311).

4. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 3 is characterized in that: The mounting holes (313) are circular holes, and there are at least two of them, and each mounting hole (313) is mounted with the flexible arm (311).

5. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 3 is characterized in that: The mounting hole (313) is an arc-shaped hole, and the center of the arc-shaped hole is located at the center of the magnetic suction cup (2); the arc-shaped hole is movably matched with the flexible arm (311) along its length direction; The flexible positioning assembly (3) further comprises a connecting rod (314), one end of which is connected to the bottom of the flexible arm (311) and the other end of which is rotatably connected to the middle of the bottom surface of the magnetic suction cup (2).

6. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 5, characterized in that: The vertical sliding holes (23) are four in number; the inner ends of the two connecting rods (314) corresponding to the two opposite flexible arms (311) are fixedly connected.

7. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 6, characterized in that: The method for positioning the bearing ring to be ground by the flexible positioning component (3) comprises the following steps: Step 1: placing the bearing ring to be ground on the inner side or the outer side of the circle formed by the flexible arm assembly (31), and pressing the bearing ring to be ground downward so that the bottom surface is in contact with the upper surface of the magnetic chuck (2); Step 2: rotating one set of two opposite flexible arms (311) to reciprocate along the length direction of the corresponding mounting hole (313) for several times; Step 3: rotating another set of two opposite flexible arms (311) to reciprocate along the length direction of the corresponding mounting holes (313) for several times; Step 4: Repeat steps 2 and 3 at least once.

8. A magnetic fixture for grinding a bearing ring with a flexible positioning function according to any one of claims 3 to 7, characterized in that: The flexible arm (311) comprises: A rigid connecting column (3111) vertically mounted in the mounting hole (313); The flexible arm (3112) is coaxially arranged on the top surface of the rigid connecting column (3111); Wherein, the flexible arm body (3112) is conical, and the diameter of the large end of the flexible arm body (3112) is larger than the diameter of the rigid connecting column (3111); the inner diameter of the circle formed by the large end of all flexible arm bodies (3112) is smaller than the outer diameter of the bearing ring to be ground, or the outer diameter of the circle formed by the large end is larger than the inner diameter of the bearing ring to be ground, and the inner diameter of the circle formed by the small end of all flexible arm bodies (3112) is larger than the outer diameter of the bearing ring to be ground, or the outer diameter of the circle formed by the small end is smaller than the inner diameter of the bearing ring to be ground.

9. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 8, characterized in that: The flexible arm (3112) is internally coated with an elastic cylinder (3113) coaxial therewith, so that the flexible arm (3112) can be quickly reset under the action of the elastic cylinder (3113), thereby improving the response speed.

10. The magnetic fixture for grinding a bearing ring with a flexible positioning function according to claim 8, characterized in that: The outer surface of the flexible arm body (3112) has a wear-resistant layer (3114).

Images