Bearing production polishing device with positioning structure

Abstract

The utility model relates to the field of bearing polishing devices, in particular to a bearing production polishing device with a positioning structure, and solves the technical problems that the existing bearing polishing machining positioning and locking mode is inconvenient to rotate and adjust the polishing position; according to the technical scheme, the bearing production polishing device with the positioning structure comprises a workbench, a supporting table, a stand column, an air blower, a cavity, an air hole, a positioning mechanism, a polishing mechanism, a bearing inner ring pressing and locking assembly and a bearing outer ring pressing and locking assembly; according to the utility model, the positioning mechanism which extrudes and locks the inner ring or the outer ring of the bearing in a central radial manner is matched with the bearing inner ring pressing and locking assembly and the bearing outer ring pressing and locking assembly which are used for manually pressing and fastening the bearing, so that the bearing can be quickly rotated to adjust the grinding position under the condition that the bearing is kept immobile during grinding and processing, and the working efficiency is improved. Operation is easy and convenient, and the problem that according to an existing bearing grinding machining positioning and locking mode, the grinding position is inconvenient to rotate and adjust is solved.

Description

Technical Field

[0001] The utility model relates to the field of bearing grinding devices, in particular to a bearing production grinding device with a positioning structure. Background Art

[0002] The bearing structure widely used in the industrial field is divided into an outer ring and an inner ring, which need to be processed separately during processing and manufacturing, otherwise the rolling parts between the outer ring and the inner ring of the bearing will be damaged. In order to ensure smooth relative rotation after assembly, the outer wall of the inner ring of the bearing needs to be finely polished to remove burrs during the manufacturing process because it is in direct contact with the rolling parts. The outer wall of the outer ring of the bearing also needs to be polished to improve its smoothness and improve its appearance.

[0003] In the current bearing grinding process, the bearing is generally fixed with a clamp, and then the outer wall is ground with a grinding machine. During the grinding process, the bearing part must be rotated synchronously to adjust the grinding position. However, when the original clamp is used to lock the bearing for grinding, when rotating the bearing part, it is necessary to first release the clamp lock and then manually rotate the bearing part. The operation is more troublesome, resulting in low grinding efficiency. In addition, when rotating the bearing part, the worker's hands directly contact the bearing, and the oil on the hands can easily cause contamination of the bearing surface.

[0004] Therefore, in order to address the problem that the existing positioning and locking method of bearing grinding processing is not convenient for rotating and adjusting the grinding position, a grinding device based on a central radial extrusion positioning bearing can be designed. In combination with a longitudinal clamping module designed according to the dimensions of the outer and inner rings of the bearing, the grinding position can be easily rotated and adjusted during the grinding process without releasing the positioning lock of the bearing. Utility Model Content

[0005] In order to overcome the problem that the existing bearing grinding processing positioning locking method is not convenient for rotating and adjusting the grinding position.

[0006] The technical solution of the utility model is: a bearing production and grinding device with a positioning structure, comprising a workbench, a support platform, a column, a blower, a cavity, air holes, a positioning mechanism, a grinding mechanism, a bearing inner ring pressing and locking assembly, and a bearing outer ring pressing and locking assembly; a blower is installed in the middle of the workbench, a support platform fixedly connected to the workbench through a bracket is arranged above the blower, a column is fixedly installed on the upper end of the support platform, a cavity with an open bottom is opened in the column, an air outlet channel of the blower is connected with the bottom opening of the cavity through an air supply pipe, air holes are opened on the outer side wall of the column, a positioning mechanism arranged in a triangular shape is installed on the upper end of the support platform, a grinding mechanism that can slide along the axis direction of the workbench is arranged on one side of the upper end of the workbench, and a bearing inner ring pressing and locking assembly and a bearing outer ring pressing and locking assembly that can longitudinally slide, extrude and fix the bearing are sleeved on the column.

[0007] Preferably, after the user places two different bearing parts, the bearing inner ring or the bearing outer ring, on the workbench, the user drives the positioning mechanism to squeeze and position the corresponding bearing parts radially from the center to the surrounding areas, so that the bearing parts cannot move horizontally, and then chooses to use the bearing inner ring pressure locking assembly or the bearing outer ring pressure locking assembly according to the type of bearing parts placed, and uses one hand to press down the corresponding bearing part, and uses the other hand to control the grinding mechanism to grind the outer wall of the bearing part. During the grinding process, the bearing part can be driven to rotate horizontally and adjust the direction by rotating the bearing inner ring pressure locking assembly or the bearing outer ring pressure locking assembly to change the grinding position, and the blower supplies air to blow the air through the air holes onto the bearing part for air cooling.

[0008] Preferably, the positioning mechanism includes a cylinder and a clamping block; three groups of cylinders are provided and arranged in a triangle on the support platform, and a clamping block with a cylindrical structure is fixedly installed on the end of the piston rod of the cylinder. The cylinder drives the clamping block to move from the center of the support platform to the surrounding directions until it abuts against the inner wall of the inner ring or outer ring of the bearing, so that the inner ring or outer ring of the bearing cannot move horizontally, but can rotate horizontally to adjust the position of its own outer wall relative to the grinding mechanism.

[0009] Preferably, the grinding mechanism includes a slide, an angle grinder, a handle, a roller, and a rolling groove; the slide is arranged on one side above the workbench, and an angle grinder with a grinding wheel facing the bearing is installed on the slide. A handle extending toward the edge of the workbench is fixedly installed on the upper end of the slide, and two parallel slide rails are fixedly installed on the lower end of the slide and rollers are installed in the slide rails. Two parallel rolling grooves are provided on the workbench, and the slide rails and rollers are located in corresponding rolling grooves and roll and slide along the bottom wall of the rolling grooves through the rollers. The user holds the handle with one hand and rolls the roller in the rolling groove to move the slide, so that the grinding wheel of the angle grinder generates radial force on the outer wall of the bearing part, and the angle grinder can be started to perform the grinding operation.

[0010] Preferably, the bearing inner ring pressure locking assembly includes an inner sleeve and a bearing inner ring pressure rod; the inner sleeve is arranged on the outer side of the upper end of the column, the bearing inner ring pressure rod is an L-shaped structure and is provided with three of them, the horizontal part of the bearing inner ring pressure rod is fixedly connected to the outer wall of the inner sleeve, and the lower end of the vertical part of the bearing inner ring pressure rod is fixedly installed with a suction cup located above the upper surface of the bearing inner ring. The user holds the inner sleeve and moves downward along the column, so that the vertical part of the bearing inner ring pressure rod and the suction cup generate a squeezing force on the upper surface of the bearing inner ring. At the same time, the suction cup is adsorbed on the upper surface of the bearing inner ring. The squeezing force prevents the bearing inner ring from rotating relative to each other during grinding. When the grinding position needs to be adjusted, the inner sleeve is rotated to drive the bearing inner ring to rotate through the adsorption and fixation of the suction cup and the bearing inner ring.

[0011] Preferably, the bearing outer ring pressure locking assembly includes an outer sleeve and a bearing outer ring pressure rod; the outer sleeve is arranged on the outside of the column and below the inner sleeve, the bearing outer ring pressure rod is an L-shaped structure and is provided with three of them, the horizontal portion of the bearing outer ring pressure rod is fixedly connected to the outer wall of the outer sleeve, and the lower end of the vertical portion of the bearing outer ring pressure rod is fixedly installed with a suction cup above the upper surface of the bearing outer ring. The user holds the outer sleeve and moves downward along the column, so that the vertical portion of the bearing outer ring pressure rod and the suction cup generate a squeezing force on the upper surface of the bearing outer ring. At the same time, the suction cup is adsorbed on the upper surface of the bearing outer ring. The squeezing force prevents the bearing outer ring from rotating relative to each other during grinding. When the grinding position needs to be adjusted, the outer sleeve is rotated to drive the bearing outer ring to rotate through the adsorption and fixation of the suction cup and the bearing outer ring.

[0012] Preferably, a limit plate in the outer sleeve is fixedly installed on the outer wall of the column, and an upper guide rod passing through the bottom wall of the inner sleeve is fixedly connected to the upper end of the limit plate. A No. 1 spring with elastic elongation potential energy is arranged on the outer sleeve of the upper guide rod. The upper and lower ends of the No. 1 spring are respectively fixedly connected to the lower end of the bottom wall of the inner sleeve and the upper end of the limit plate. The upper guide rod guides the movement of the inner sleeve to prevent the inner sleeve from rotating on the column, and relies on the elastic elongation potential energy of the No. 1 spring. After the inner sleeve is loosened, the inner sleeve can be automatically pushed upward to release the longitudinal extrusion locking force on the inner ring of the bearing.

[0013] Preferably, a lower guide rod passing through the bottom wall of the outer sleeve is fixedly connected between the lower end of the limit plate and the support platform, and a No. 2 spring with elastic contraction potential energy is arranged on the outer sleeve of the lower guide rod. The upper and lower ends of the No. 2 spring are respectively fixedly connected to the lower end of the limit plate and the upper end of the bottom wall of the outer sleeve. The lower guide rod guides the movement of the outer sleeve to prevent the outer sleeve from rotating on the column, and relies on the elastic contraction potential energy of the No. 2 spring. After the outer sleeve is loosened, the outer sleeve can be automatically pushed upward to release the longitudinal extrusion locking force on the outer ring of the bearing.

[0014] Beneficial effects of the utility model:

[0015] 1. By using the positioning mechanism of the central radial squeeze locking bearing inner ring or outer ring structure, and cooperating with the bearing inner ring pressing lock assembly and the bearing outer ring pressing lock assembly that tighten the bearing by manual downward pressure, during the grinding process, the bearing can be quickly rotated to adjust the grinding position while keeping the bearing stationary, which is simple and convenient to operate;

[0016] 2. By using the method of longitudinal extrusion to lock the bearing, when rotating the bearing, the suction cups on the bearing inner ring locking assembly and the bearing outer ring locking assembly can be used to drive the bearing to rotate by adsorption force, without touching the bearing by hand to avoid contamination;

[0017] 3. By using the air holes set on the column and the blower, the bearing parts can be continuously cooled by air during the grinding process to avoid overheating and deformation of the grinding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure schematic diagram of the inner ring grinding state of the bearing of the bearing production and grinding device with a positioning structure of the utility model is shown;

[0019] Figure 2 What is shown is a three-dimensional structural schematic diagram of the outer ring grinding state of the bearing of the bearing production and grinding device with a positioning structure of the utility model;

[0020] Figure 3 What is shown is a three-dimensional structural schematic diagram of a workbench of a bearing production and grinding device with a positioning structure of the utility model;

[0021] Figure 4 What is shown is a schematic diagram of a longitudinal section of a bearing production and grinding device with a positioning structure of the utility model;

[0022] Figure 5 The present invention shows a schematic diagram of the three-dimensional structure of the grinding mechanism of the bearing production grinding device with a positioning structure;

[0023] Figure 6 Shown is a three-dimensional structural schematic diagram of a bearing inner ring press-locking assembly and a bearing outer ring press-locking assembly of a bearing production and grinding device with a positioning structure of the utility model;

[0024] Figure 7 What is shown is a schematic diagram of the installation cross-sectional structure of the bearing inner ring press-lock assembly and the bearing outer ring press-lock assembly of the bearing production and grinding device with a positioning structure of the utility model.

[0025] Explanation of the accompanying drawings: 1. workbench; 2. support platform; 3. column; 4. blower; 5. cavity; 6. air hole; 11. limit plate; 12. upper guide rod; 13. spring No. 1; 14. lower guide rod; 15. spring No. 2; 701. cylinder; 702. clamping block; 801. slide table; 802. angle grinder; 803. handle; 804. roller; 805. rolling groove; 901. inner sleeve; 902. bearing inner ring pressure rod; 1001. outer sleeve; 1002. bearing outer ring pressure rod. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1-4The utility model provides an embodiment: a bearing production and grinding device with a positioning structure, comprising a workbench 1, a support platform 2, a column 3, a blower 4, a cavity 5, an air hole 6, a positioning mechanism, a grinding mechanism, a bearing inner ring pressing lock component, and a bearing outer ring pressing lock component; a blower 4 is installed in the middle of the workbench 1, a support platform 2 fixedly connected to the workbench 1 through a bracket is arranged above the blower 4, a column 3 is fixedly installed on the upper end of the support platform 2, a cavity 5 with an open bottom is opened in the column 3, an air outlet channel of the blower 4 is connected to the bottom opening of the cavity 5 through an air supply pipe, an air hole 6 is opened on the outer side wall of the column 3, a triangular positioning mechanism is installed on the upper end of the support platform 2, a grinding mechanism that can slide along the axis direction of the workbench 1 is arranged on one side of the upper end of the workbench 1, and a There are bearing inner ring locking components and bearing outer ring locking components that can slide and squeeze the fixed bearings longitudinally. After the user places the two different bearing parts, the bearing inner ring or the bearing outer ring, on the workbench 1, the positioning mechanism is driven to squeeze and position the corresponding bearing parts radially from the center to the surrounding areas, so that the bearing parts cannot move horizontally. Then, according to the type of bearing parts placed, the bearing inner ring locking component or the bearing outer ring locking component is selected to be used. The corresponding bearing parts are pressed down with one hand, and the outer wall of the bearing parts is polished by the grinding mechanism with the other hand. During the grinding process, the bearing parts can be driven to rotate horizontally and adjust the direction by rotating the bearing inner ring locking component or the bearing outer ring locking component to change the grinding position. The blower 4 supplies air, and the air is blown through the air holes 6 to the bearing parts for air cooling.

[0028] See also Figure 3-5 In this embodiment, the positioning mechanism includes a cylinder 701 and a clamping block 702; three groups of cylinders 701 are provided and arranged in a triangle on the support platform 2, and a clamping block 702 of a cylindrical structure is fixedly installed at the end of the piston rod of the cylinder 701. The cylinder 701 drives the clamping block 702 to move from the center of the support platform 2 to the surrounding directions until it abuts against the inner wall of the inner ring or outer ring of the bearing, so that the inner ring or outer ring of the bearing cannot move horizontally, but can be rotated horizontally to adjust the position of its own outer wall relative to the grinding mechanism. The grinding mechanism includes a slide 801, an angle grinder 802, a handle 803, a roller 804, and a rolling groove 805; the slide 801 is arranged on one side above the workbench 1, An angle grinder 802 with a grinding wheel facing the bearing is installed on the slide 801. A handle 803 extending toward the edge of the workbench 1 is fixedly installed on the upper end of the slide 801. Two parallel slide rails are fixedly installed on the lower end of the slide 801 and rollers 804 are installed in the slide rails. Two parallel rolling grooves 805 are provided on the workbench 1. The slide rails and rollers 804 are in corresponding rolling grooves 805 and roll and slide along the bottom walls of the rolling grooves 805 through the rollers 804. The user holds the handle 803 with one hand and rolls the rollers 804 in the rolling grooves 805 to move the slide 801, so that the grinding wheel of the angle grinder 802 generates radial force on the outer wall of the bearing. The angle grinder 802 can be started to perform the grinding operation.

[0029] See also Figure 4 , 6-7. In the present embodiment, the bearing inner ring pressing lock assembly comprises an inner sleeve 901 and a bearing inner ring pressing rod 902; the inner sleeve 901 is sleeved on the outer side of the upper end of the column 3, the bearing inner ring pressing rod 902 is an L-shaped structure and is provided with three of them, the horizontal portion of the bearing inner ring pressing rod 902 is fixedly connected to the outer wall of the inner sleeve 901, and the lower end of the vertical portion of the bearing inner ring pressing rod 902 is fixedly installed with a suction cup located above the upper surface of the bearing inner ring. The user holds the inner sleeve 901 and moves downward along the column 3, so that the vertical portion of the bearing inner ring pressing rod 902 and the suction cup generate a squeezing force on the upper surface of the bearing inner ring. At the same time, the suction cup is adsorbed on the upper surface of the bearing inner ring. The squeezing force prevents the bearing inner ring from rotating relative to each other during grinding, and when the grinding position needs to be adjusted, the inner sleeve is rotated. 901, the inner ring of the bearing can be driven to rotate by adsorption and fixation of the suction cup with the inner ring of the bearing. The outer ring locking assembly of the bearing includes an outer sleeve 1001 and a bearing outer ring pressure rod 1002; the outer sleeve 1001 is sleeved on the outside of the column 3 and is located below the inner sleeve 901, and the bearing outer ring pressure rod 1002 is an L-shaped structure and is provided with three. The horizontal part of the bearing outer ring pressure rod 1002 is fixedly connected to the outer wall of the outer sleeve 1001, and the lower end of the vertical part of the bearing outer ring pressure rod 1002 is fixedly installed with a suction cup located above the upper surface of the bearing outer ring. The user holds the outer sleeve 1001 and moves downward along the column 3, so that the vertical part of the bearing outer ring pressure rod 1002 and the suction cup generate a squeezing force on the upper surface of the bearing outer ring. At the same time, the suction cup is adsorbed on the upper surface of the bearing outer ring. The extrusion force is used to prevent the outer ring of the bearing from rotating relative to each other during grinding. When the grinding position needs to be adjusted, the outer sleeve 1001 is rotated to fix the outer ring of the bearing through the suction cup, and the outer ring of the bearing is driven to rotate. The outer wall of the column 3 is fixedly installed with a limit plate 11 in the outer sleeve 1001. The upper end of the limit plate 11 is fixedly connected with an upper guide rod 12 passing through the bottom wall of the inner sleeve 901. The outer sleeve of the upper guide rod 12 is provided with a spring 13 with elastic elongation potential energy. The upper and lower ends of the spring 13 are respectively fixedly connected to the lower end of the bottom wall of the inner sleeve 901 and the upper end of the limit plate 11. The upper guide rod 12 guides the movement of the inner sleeve 901 to prevent the inner sleeve 901 from rotating on the column 3, and relies on the elastic elongation potential energy of the spring 13. After the inner sleeve 901 is loosened, the inner sleeve 901 can automatically push up to release the longitudinal extrusion locking force on the inner ring of the bearing. A lower guide rod 14 passing through the bottom wall of the outer sleeve 1001 is fixedly connected between the lower end of the limit plate 11 and the support platform 2. A No. 2 spring 15 with elastic contraction potential energy is arranged on the outer sleeve of the lower guide rod 14. The upper and lower ends of the No. 2 spring 15 are respectively fixedly connected to the lower end of the limit plate 11 and the upper end of the bottom wall of the outer sleeve 1001. The lower guide rod 14 guides the movement of the outer sleeve 1001 to prevent the outer sleeve 1001 from rotating on the column 3. Relying on the elastic contraction potential energy of the No. 2 spring 15, after the outer sleeve 1001 is loosened, the outer sleeve 1001 can automatically push up to release the longitudinal extrusion locking force on the outer ring of the bearing.

[0030] When working, the user places the inner ring of the bearing on the workbench 1, and then starts the cylinder 701 to drive the pressing block 702 to move from the center of the support table 2 to the surrounding direction, against the inner wall of the inner ring of the bearing, and position the inner ring of the bearing;

[0031] Then, one hand holds the inner sleeve 901 and moves it downward along the column 3, so that the vertical part of the bearing inner ring pressure rod 902 and the suction cup generate a squeezing force on the upper surface of the bearing inner ring. At the same time, the suction cup is adsorbed on the upper surface of the bearing inner ring. The other hand holds the handle 803 and uses the angle grinder 802 to grind the outer wall of the bearing inner ring.

[0032] The inner sleeve 901 is rotated to fix the inner ring of the bearing by the suction cup, thereby driving the inner ring of the bearing to rotate and changing the grinding position;

[0033] After the inner ring of the bearing is polished, the inner ring of the bearing is removed, and the outer ring of the bearing is placed on top. According to the above method, the pressing block 702 is pressed against the inner wall of the outer ring of the bearing to position the outer ring of the bearing;

[0034] Next, one hand holds the outer sleeve 1001 and moves it downward along the column 3, so that the vertical part of the bearing outer ring pressure rod 1002 and the suction cup generate a squeezing force on the upper surface of the bearing outer ring. At the same time, the suction cup is adsorbed on the upper surface of the bearing outer ring. The other hand holds the handle 803 and uses the angle grinder 802 to grind the outer wall of the bearing outer ring.

[0035] The outer sleeve 1001 is rotated and fixed to the outer ring of the bearing by the suction cup, so as to drive the outer ring of the bearing to rotate and change the grinding position;

[0036] During the entire grinding process, the blower 4 supplies air, and the air is blown through the air holes 6 to the bearing components for air cooling.

[0037] Through the above steps, by using the positioning mechanism of the central radial extrusion locking bearing inner ring or outer ring structure, in conjunction with the bearing inner ring pressing locking assembly and the bearing outer ring pressing locking assembly that are manually pressed down to tighten the bearing, during the grinding process, the bearing can be quickly rotated to adjust the grinding position while keeping the bearing stationary. The operation is simple and convenient, so as to solve the problem that the existing bearing grinding positioning locking method is not convenient for rotating to adjust the grinding position.

[0038] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A bearing production and grinding device with a positioning structure, comprising a workbench (1); characterized in that: The invention also comprises a support platform (2), a column (3), a blower (4), a cavity (5), an air hole (6), a positioning mechanism, a grinding mechanism, a bearing inner ring locking assembly, and a bearing outer ring locking assembly; a blower (4) is installed in the middle of the workbench (1); a support platform (2) fixedly connected to the workbench (1) through a bracket is arranged above the blower (4); a column (3) is fixedly installed on the upper end of the support platform (2); a cavity (5) with an open bottom is provided in the column (3); an air outlet channel of the blower (4) is connected to the bottom opening of the cavity (5) through an air supply pipe; an air hole (6) is provided on the outer wall of the column (3); a positioning mechanism arranged in a triangular shape is installed on the upper end of the support platform (2); a grinding mechanism that can slide along the axis direction of the workbench (1) is arranged on one side of the upper end of the workbench (1); a bearing inner ring locking assembly and a bearing outer ring locking assembly that can slide longitudinally and squeeze the fixed bearing are sleeved on the column (3).

2. A bearing production and grinding device with a positioning structure according to claim 1, characterized in that: The positioning mechanism comprises a cylinder (701) and a clamping block (702); three groups of cylinders (701) are provided and arranged in a triangle on the support platform (2); a clamping block (702) with a cylindrical structure is fixedly mounted on the end of the piston rod of the cylinder (701).

3. A bearing production and grinding device with a positioning structure according to claim 2, characterized in that: The grinding mechanism comprises a slide (801), an angle grinder (802), a handle (803), a roller (804), and a rolling groove (805); the slide (801) is arranged on one side above the workbench (1); the slide (801) is provided with an angle grinder (802) with a grinding wheel facing the bearing; the upper end of the slide (801) is fixedly provided with a handle (803) extending toward the edge of the workbench (1); the lower end of the slide (801) is fixedly provided with two parallel slide rails and rollers (804) are installed in the slide rails; the workbench (1) is provided with two parallel rolling grooves (805); the slide rails and the rollers (804) are located in corresponding rolling grooves (805) and roll and slide along the bottom wall of the rolling grooves (805) through the rollers (804).

4. A bearing production and grinding device with a positioning structure according to claim 3, characterized in that: The bearing inner ring pressure locking assembly comprises an inner sleeve (901) and a bearing inner ring pressure rod (902); the inner sleeve (901) is sleeved on the outer side of the upper end of the column (3); the bearing inner ring pressure rod (902) is an L-shaped structure and is provided with three; the horizontal portion of the bearing inner ring pressure rod (902) is fixedly connected to the outer wall of the inner sleeve (901); and the lower end of the vertical portion of the bearing inner ring pressure rod (902) is fixedly installed with a suction cup located above the upper surface of the bearing inner ring.

5. A bearing production and grinding device with a positioning structure according to claim 4, characterized in that: The bearing outer ring pressure locking assembly comprises an outer sleeve (1001) and a bearing outer ring pressure rod (1002); the outer sleeve (1001) is sleeved on the outer side of the column (3) and is located below the inner sleeve (901); the bearing outer ring pressure rod (1002) is an L-shaped structure and is provided with three of them; the horizontal portion of the bearing outer ring pressure rod (1002) is fixedly connected to the outer wall of the outer sleeve (1001); and the lower end of the vertical portion of the bearing outer ring pressure rod (1002) is fixedly installed with a suction cup located above the upper surface of the bearing outer ring.

6. A bearing production and grinding device with a positioning structure according to claim 5, characterized in that: A limit plate (11) located in the outer sleeve (1001) is fixedly mounted on the outer wall of the column (3); an upper guide rod (12) passing through the bottom wall of the inner sleeve (901) is fixedly connected to the upper end of the limit plate (11); a spring (13) having elastic elongation potential energy is disposed on the outer sleeve of the upper guide rod (12); and upper and lower ends of the spring (13) are respectively fixedly connected to the lower end of the bottom wall of the inner sleeve (901) and the upper end of the limit plate (11).

7. A bearing production and grinding device with a positioning structure according to claim 6, characterized in that: A lower guide rod (14) passing through the bottom wall of the outer sliding sleeve (1001) is fixedly connected between the lower end of the limit plate (11) and the support platform (2). The outer sleeve of the lower guide rod (14) is provided with a second spring (15) having elastic contraction potential energy. The upper and lower ends of the second spring (15) are respectively fixedly connected to the lower end of the limit plate (11) and the upper end of the bottom wall of the outer sliding sleeve (1001).

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