Fixture for machining needle bearing

Abstract

The utility model discloses a needle bearing machining clamp which comprises an installation shell, and a clamping mechanism is arranged on the surface of the installation shell. The clamping mechanism comprises a motor, the motor is fixed to the bottom of the mounting shell, an output shaft of the motor penetrates into the mounting shell and is fixedly provided with a screw rod, the top of the screw rod is rotationally connected with the top of the inner wall of the mounting shell, the surface of the screw rod is rotationally connected with a movable sleeve, a linkage plate is hinged to the surface of the movable sleeve, and a movable shell is hinged to the surface of the linkage plate; a sliding groove is formed in the surface of the mounting shell, the movable shell is in sliding connection with the surface of the sliding groove, a spring is fixed to the surface of the movable shell, a clamping shell is fixed to the surface of the spring, a positioning shell is fixed to the top of the mounting shell, and the surface of the positioning shell communicates with a clamping pad. The bearing clamp has the advantage that the bearing is not easy to damage after being clamped, and the problem that the bearing is easy to damage when the existing bearing clamp is used is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of needle roller bearing processing, in particular to a clamp for needle roller bearing processing. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers. The rollers are thin and long relative to their diameter. Such rollers are called needle rollers. Despite their small cross-section, the bearings still have a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact. When the inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest. They are particularly suitable for support structures with limited radial installation dimensions.

[0003] Due to the characteristics of needle roller bearings, the outer ring of solid ring needle roller bearings is very thin. When processing the end face of the outer ring, the traditional claw-type fixture can easily cause the outer ring of the bearing to deform. Therefore, it is necessary to improve the existing equipment to overcome the above defects. Utility Model Content

[0004] The utility model aims to provide a clamp for processing needle roller bearings, which has the advantage of not easily causing damage to the bearings after clamping, and solves the problem that the current bearing clamps are prone to damage to the bearings when in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for processing needle roller bearings, comprising a mounting shell, a surface of which is provided with a clamping mechanism;

[0006] The clamping mechanism includes a motor, which is fixed to the bottom of the mounting shell, and the motor output shaft passes through the interior of the mounting shell and is fixed with a screw, the top of the screw is rotatably connected to the top of the inner wall of the mounting shell, the surface of the screw is rotatably connected with a movable sleeve, the surface of the movable sleeve is hinged with a linkage plate, the surface of the linkage plate is hinged with a movable shell, the surface of the mounting shell is provided with a slide groove, the movable shell is slidably connected to the surface of the slide groove, the surface of the movable shell is fixed with a spring, the surface of the spring is fixed with a clamping shell, the top of the mounting shell is fixed with a positioning shell, the surface of the positioning shell is connected with a clamping pad, the top of the mounting shell is fixed with a first air pump, and the surface of the first air pump is connected to the positioning shell through a pipeline.

[0007] As a preferred fixture for processing needle roller bearings of the utility model, second air pumps are fixed on both sides of the left and right sides of the mounting shell surface, a hose is connected to the surface of the second air pump, one end of the hose is connected to a clamping shell on one side, and adsorption holes are opened on the surfaces of the left and right clamping shells.

[0008] As a preferred clamp for machining needle bearings of the utility model, the clamping shell is arranged in an arc-shaped structure, and a sealing gasket is fixed on the surface of the clamping shell.

[0009] As a preferred clamp for processing needle bearings of the utility model, a telescopic rod is arranged inside the spring, one end of the telescopic rod is fixedly connected to the surface of the movable shell, and the other end of the telescopic rod is fixedly connected to the surface of the clamping shell.

[0010] As a preferred fixture for processing needle roller bearings of the utility model, a sliding rod is fixed to the inner wall of the sliding groove on the surface of the mounting shell, and the sliding rod is slidably connected to the surface of the movable shell.

[0011] As a preferred fixture for machining needle bearings of the utility model, a placement groove is provided at the top center of the surface of the mounting shell.

[0012] As a preferred fixture for machining needle bearings of the utility model, a controller is fixed on the top of the mounting shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model sets a clamping mechanism so that the needle roller bearing is not easily damaged when being clamped. When the motor is started, the screw will rotate so that the movable sleeve can move on the surface of the screw. When the movable sleeve moves, the linkage plate will rotate, and the hinge angle between it and the movable shell will also change, so that the multiple movable shells can move together in the same direction or in the opposite direction. When the multiple movable shells move towards each other, the clamping shell can contact the surface of the bearing ring, and the spring can be compressed and deformed to avoid damage to the bearing ring caused by rigid contact, and at the same time, the bearing ring can obtain a clamping effect. After the clamping shell clamps the middle and upper part of the bearing ring surface, the first air pump is turned on to allow compressed air to enter the interior of the positioning shell. At this time, the clamping pad will expand evenly due to the gas pressure, so as to fit tightly and wrap the outer ring of the bearing. The flexible contact during the expansion process ensures that no scratches or damage are caused to the surface of the outer ring, and at the same time provides sufficient clamping force to fix the bearing, so that the outer ring of the bearing can obtain a good clamping effect, and the surface is not easily damaged, thereby meeting the processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the clamping mechanism in the utility model;

[0018] Figure 4 It is a partial cross-sectional structural schematic diagram of the clamping mechanism in the utility model.

[0019] In the figure: 1. mounting shell; 2. clamping mechanism; 201. motor; 202. screw; 203. movable sleeve; 204. linkage plate; 205. movable shell; 206. spring; 207. clamping shell; 208. positioning shell; 209. clamping pad; 210. first air pump; 211. second air pump; 212. hose; 213. sealing pad; 214. slide rod; 215. telescopic rod; 3. placement slot; 4. controller. DETAILED DESCRIPTION

[0020] See also Figure 1-4 , a fixture for processing needle roller bearings, comprising a mounting shell 1, a surface of which is provided with a clamping mechanism 2;

[0021] The surface of the mounting shell 1 is used for placing the bearing, and the clamping mechanism 2 prevents the needle roller bearing from being damaged when being clamped.

[0022] The clamping mechanism 2 includes a motor 201, which is fixed to the bottom of the mounting shell 1. The output shaft of the motor 201 passes through the interior of the mounting shell 1 and is fixed with a screw 202. The top of the screw 202 is rotatably connected to the top of the inner wall of the mounting shell 1. The surface of the screw 202 is rotatably connected with a movable sleeve 203. The surface of the movable sleeve 203 is hinged with a linkage plate 204. The surface of the linkage plate 204 is hinged with a movable shell 205. A slide groove is provided on the surface of the mounting shell 1. The movable shell 205 is slidably connected to the surface of the slide groove. A spring 206 is fixed on the surface of the movable shell 205. A clamping shell 207 is fixed on the surface of the spring 206. A positioning shell 208 is fixed on the top of the mounting shell 1. The surface of the positioning shell 208 is connected with a clamping pad 209. A first air pump 210 is fixed on the top of the mounting shell 1. The surface of the first air pump 210 is connected with the positioning shell 208 through a pipeline.

[0023] When the motor 201 is started, the screw 202 will rotate, so that the movable sleeve 203 can move on the surface of the screw 202. When the movable sleeve 203 moves, the linkage plate 204 will rotate, and the hinge angle between it and the movable shell 205 will also change, so that the multiple movable shells 205 can move together in the same direction or in the opposite direction. When the multiple movable shells 205 move towards each other, the clamping shell 207 can contact the surface of the bearing ring, and the spring 206 can be compressed and deformed to avoid damage to the bearing ring caused by rigid contact. At the same time, the bearing ring can also be clamped. After the clamping shell 207 clamps the upper and middle part of the bearing ring surface, the first air pump 210 is turned on to allow compressed air to enter the positioning shell 208. At this time, the clamping pad 209 will expand evenly due to the gas pressure, thereby tightly fitting and wrapping the outer ring of the bearing. The flexible contact during the expansion process ensures that there will be no scratches or damage to the surface of the outer ring, while providing sufficient clamping force to fix the bearing, so that the outer ring of the bearing can obtain a good clamping effect and the surface is not easily damaged, meeting the processing requirements.

[0024] Furthermore, a second air pump 211 is fixed on both sides of the surface of the mounting shell 1, and a hose 212 is connected to the surface of the second air pump 211. One end of the hose 212 is connected to a clamping shell 207 on one side, and adsorption holes are opened on the surfaces of the clamping shells 207 on the left and right sides;

[0025] When the second air pumps 211 on both sides are started, air can be drawn into the clamping shells 207 on both sides through the hoses 212, so that the inside of the clamping shells 207 can be in a negative pressure state, so that the surface of the bearing ring can also be negatively adsorbed, further improving the clamping effect of the bearing ring.

[0026] Furthermore, the clamping shell 207 is arranged in an arc-shaped structure, and a sealing gasket 213 is fixed on the surface of the clamping shell 207;

[0027] The arc-shaped clamping shell 207 can fit the bearing surface more closely, and the sealing gasket 213 can improve the sealing effect of the surface of the clamping shell 207, thereby improving the negative pressure adsorption capacity.

[0028] Furthermore, a telescopic rod 215 is provided inside the spring 206, one end of the telescopic rod 215 is fixedly connected to the surface of the movable shell 205, and the other end of the telescopic rod 215 is fixedly connected to the surface of the clamping shell 207;

[0029] The telescopic rod 215 can provide a supporting effect for the clamping shell 207 , while also preventing the clamping shell 207 from moving up and down.

[0030] Furthermore, a slide bar 214 is fixed to the inner wall of the slide groove on the surface of the installation shell 1, and the slide bar 214 is slidably connected to the surface of the movable shell 205;

[0031] The movable shell 205 can slide on the surface of the slide bar 214, so that the movable shell 205 can obtain support and guidance effects, and prevent the movable shell 205 from being separated from the inside of the slide groove.

[0032] Furthermore, a placement groove 3 is provided at the center of the top of the surface of the mounting shell 1, and the clamping pad 209 is made of rubber;

[0033] The placement groove 3 enables the bearing to be placed more easily at the center of the mounting shell 1, thereby facilitating the positioning of the bearing, and the clamping pad 209 made of rubber material ensures that it can expand and deform.

[0034] Furthermore, a controller 4 is fixed on the top of the mounting shell 1, and the controller 4 is electrically connected to the first air pump 210, the second air pump 211 and the motor 201;

[0035] The controller 4 can operate the first air pump 210 , the second air pump 211 and the motor 201 .

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixture for machining needle roller bearings, comprising a mounting shell (1), characterized in that: A clamping mechanism (2) is provided on the surface of the mounting shell (1); The clamping mechanism (2) comprises a motor (201), the motor (201) being fixed to the bottom of the mounting shell (1), the output shaft of the motor (201) passing through the interior of the mounting shell (1) and being fixed with a screw (202), the top of the screw (202) being rotatably connected to the top of the inner wall of the mounting shell (1), the surface of the screw (202) being rotatably connected to a movable sleeve (203), the surface of the movable sleeve (203) being hinged to a linkage plate (204), the surface of the linkage plate (204) being hinged to a movable shell (205), A slide groove is provided on the surface of the installation shell (1), and the movable shell (205) is slidably connected to the surface of the slide groove. A spring (206) is fixed on the surface of the movable shell (205), and a clamping shell (207) is fixed on the surface of the spring (206). A positioning shell (208) is fixed on the top of the installation shell (1), and the surface of the positioning shell (208) is connected to a clamping pad (209). A first air pump (210) is fixed on the top of the installation shell (1), and the surface of the first air pump (210) is connected to the positioning shell (208) through a pipeline.

2. The needle roller bearing machining fixture according to claim 1, characterized in that: A second air pump (211) is fixed on both left and right sides of the surface of the mounting shell (1); a hose (212) is connected to the surface of the second air pump (211); one end of the hose (212) is connected to a clamping shell (207) on one side; and adsorption holes are provided on the surfaces of the clamping shells (207) on the left and right sides.

3. The needle roller bearing machining fixture according to claim 1, characterized in that: The clamping shell (207) is arranged in an arc-shaped structure, and a sealing gasket (213) is fixed on the surface of the clamping shell (207).

4. The needle roller bearing machining fixture according to claim 1, characterized in that: A telescopic rod (215) is arranged inside the spring (206), one end of the telescopic rod (215) is fixedly connected to the surface of the movable shell (205), and the other end of the telescopic rod (215) is fixedly connected to the surface of the clamping shell (207).

5. The needle roller bearing machining fixture according to claim 1, characterized in that: A sliding rod (214) is fixed to the inner wall of the sliding groove on the surface of the installation shell (1), and the sliding rod (214) is slidably connected to the surface of the movable shell (205).

6. The needle roller bearing machining fixture according to claim 1, characterized in that: A placement groove (3) is provided at the center of the top of the surface of the installation shell (1).

7. The needle roller bearing machining fixture according to claim 1, characterized in that: A controller (4) is fixed on the top of the installation shell (1).

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