Clamping device for machining ball nut

Abstract

The utility model relates to the field of ball nuts, in particular to a clamping device for machining a ball nut. Comprising a spring mandrel, the arc surface of the spring mandrel is slidably connected with a ball nut body, one end of the arc surface of the spring mandrel is provided with a connecting device, the connecting device comprises a fixing disc, the fixing disc is fixedly connected with the spring mandrel, and the arc surface of the fixing disc is fixedly connected with a plurality of fixing blocks. The multiple fixing blocks are evenly distributed on the fixing disc, and a connecting disc is arranged on the arc face of the fixing disc. According to the clamping device for machining the ball nut, when the ball nut body needs to be fixed to the spring mandrel, the ball nut body can be rapidly fixed to the spring mandrel through the connecting device, and the fixing effect between the spring mandrel and the ball nut body can be improved through the connecting device; and therefore, the stability of the ball nut body during machining can be improved through the spring mandrel.

Description

Technical Field

[0001] The utility model relates to the field of ball nuts, in particular to a clamping device for processing ball nuts. Background Art

[0002] Ball nuts are a type of high-precision and relatively hard machined part, and are mostly used in machining factories.

[0003] At present, when grinding the outer circle of the ball nut, a conical mandrel is usually used. The manufacturing process of this mandrel is simple and quick, and it is convenient for processing the ball nut. The contact between the mandrel and the inner hole of the ball nut is line contact. Because the inner hole of the ball nut is a through hole, and the outer circle of the mandrel is conical, the contact surface is small and there is only partial contact. When the operator loads the material, he must knock the ball nut and the mandrel tightly to complete the loading.

[0004] In view of the above-mentioned related contents, the following technical defects exist: when loading materials, the operator finds that because the contact surface between the mandrel and the ball nut is small, it is difficult to keep the knocking force consistent. Excessive force will cause the outer circle of the ball nut to deform and the processing size to exceed the tolerance. Excessive force will cause the nut to move when grinding the outer circle, and there is a risk of flying goods. The utility model designs a new spring mandrel used in processing the outer circle of the ball nut. The mandrel consists of three parts: the mandrel body, the spring sleeve, and the locking nut. The device uses the spring sleeve to contact the inner hole of the ball nut, which is a full contact, so it is more stable and reliable, avoiding the risk of deformation of the outer circle of the ball nut and flying goods, and eliminating the safety hazard. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the contact surface between the core shaft and the ball nut is small, the force of knocking is difficult to keep consistent, too much force will cause the outer circle of the ball nut to deform, the processing size is out of tolerance, too little force will cause the nut to move when grinding the outer circle, and there is a risk of flying goods. The utility model designs a new spring core shaft used in processing the outer circle of the ball nut. The core shaft consists of three parts: the core shaft body, the spring sleeve, and the locking nut. The device uses the spring sleeve to contact the inner hole of the ball nut, which is a full contact, so it is more stable and reliable, avoiding the risk of deformation of the outer circle of the ball nut and flying goods, and eliminating the disadvantages of this safety hazard.

[0006] To solve the above technical problems, the utility model provides a clamping device for processing ball nuts, comprising: a spring core shaft, the arc surface of the spring core shaft is slidably connected to the ball nut body, and one end of the arc surface of the spring core shaft is provided with a connecting device, wherein the connecting device comprises a fixing plate, the fixing plate is fixedly connected to the spring core shaft, the arc surface of the fixing plate is fixedly connected to a plurality of fixing blocks, and the plurality of fixing blocks are evenly distributed on the fixing plate, the arc surface of the fixing plate is provided with a connecting plate, the inner wall of the connecting plate is provided with a plurality of fixing grooves, and the plurality of fixing grooves are evenly distributed in the inner wall of the connecting plate, and the plurality of fixing grooves are respectively slidably connected to the plurality of fixing blocks, a side of the connecting plate away from the ball nut body is fixedly connected to a top plate, one end of the arc surface of the connecting plate is fixedly connected to a connecting block, the inner wall of the connecting block is threadedly connected to a screw, and an end of the screw close to the ball nut body is rotatably connected to an adjusting block.

[0007] The effect achieved by the above components is: currently, when grinding the outer circle of the ball nut body, a conical core shaft is usually used. The manufacturing process of this core shaft is simple and quick, but the contact between the core shaft and the inner hole of the ball nut body is line contact, because the inner hole of the ball nut body is a through hole, and the outer circle of the core shaft is conical, so the contact surface is small, and there is only partial contact. Another thing is that the operator has to knock the ball nut body and the core shaft tightly when loading the material. The force of this knocking is difficult to keep consistent. Excessive force will cause the outer circle of the ball nut body to deform and the processing size to exceed the tolerance. Excessive force will cause the nut to move when grinding the outer circle, and there is a risk of flying goods. The spring core shaft consists of a core shaft body, a spring sleeve, and a locking nut. The ball nut body can be well fixed on the spring core shaft through a connecting device, so as to improve the stability of the connection between the ball nut body and the spring core shaft, so that the spring core shaft can be used to improve the fixing effect of the ball nut body when grinding the outer circle of the ball nut body.

[0008] Preferably, a connecting cylinder is fixedly connected to one side of the adjusting block close to the screw rod, a limiting rod is slidably connected to the inner wall of the connecting cylinder, and the limiting rod is fixedly connected to the ball nut body.

[0009] The effect achieved by the above-mentioned components is: when the adjusting block is used to contact the ball nut body, the connecting tube on the adjusting block can be first allowed to contact the limiting rod on the ball nut body. The contact between the connecting tube and the limiting rod can limit the angle of the adjusting block, and at the same time can improve the fixing effect of the adjusting block on the ball nut body.

[0010] Preferably, one end of the limiting rod close to the adjusting block is fixedly connected with a guide block, and the cross section of the guide block is arc-shaped.

[0011] The effect achieved by the above components is that when the limit rod is connected to the connecting tube, the guide block installed on the limit rod can improve the connection efficiency of the limit rod and the connecting tube, and improve the speed of connecting the connecting tube and the limit rod.

[0012] Preferably, a metal ring is fixedly connected to one end of the arc surface of the limiting rod away from the guide block, and a magnetic ring is fixedly connected to one end of the arc surface of the connecting tube away from the adjustment block, and the metal ring is adsorbed to the magnetic ring.

[0013] The effect achieved by the above components is: when the connecting tube comes into contact with the limit rod, the magnetic ring installed on the connecting tube will be adsorbed by the metal ring installed on the limit rod, so that the connecting tube can be temporarily fixed on the limit rod, making it convenient for the subsequent rotation of the screw to fix the ball nut body on the spring core shaft.

[0014] Preferably, one end of the screw rod away from the adjusting block is fixedly connected with a force adding block.

[0015] The effect achieved by the above components is: when the screw needs to be rotated, the force block installed at one end of the screw can be used to rotate the screw. The force block can improve the efficiency of the screw rotation, thereby improving the efficiency of fixing the ball nut body on the spring core shaft.

[0016] Preferably, a connecting shell is fixedly connected to a side of the force adding block away from the screw rod, and a plurality of anti-skid grooves are provided on both sides of the connecting shell, and the plurality of anti-skid grooves are evenly distributed on the side surfaces of the connecting shell.

[0017] The effect achieved by the above components is that when the force block is used to rotate the screw, the anti-slip groove opened on the connecting shell can increase the friction between the hand and the force block when the force block is used, and the anti-slip groove can improve the efficiency of using the force block to rotate the screw.

[0018] Preferably, a protection pad is fixedly connected to one side of the top plate close to the fixed disk, and the cross-sectional dimension of the protection pad is the same as that of the top plate.

[0019] The effect achieved by the above components is: when the connecting disk is used to connect the fixed disk, the fixed block installed on the fixed disk will contact the top plate installed on the connecting disk. At this time, the protective pad installed on the top plate can protect the top plate to prevent the top plate and the fixed block from contacting each other under the drive of the screw, causing damage to both.

[0020] Preferably, the fixing block is a titanium alloy block.

[0021] The above components have the following effects: the surface of the fixing block made of titanium alloy is relatively hard, which also makes it difficult for the surface of the fixing block made of titanium alloy to deform when used for a long time, and the use effect is better.

[0022] Compared with the related art, the clamping device for processing ball nuts provided by the utility model has the following beneficial effects:

[0023] The utility model provides a clamping device for processing a ball nut. By setting a connecting device, when the ball nut body needs to be fixed on a spring core shaft, the ball nut body can be quickly fixed on the spring core shaft through the connecting device. The connecting device can improve the fixing effect between the spring core shaft and the ball nut body, so that the stability of the ball nut body during processing can be improved through the spring core shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a clamping device for processing a ball nut provided by the utility model;

[0025] Figure 2 for Figure 1 A schematic structural diagram of the connecting device shown;

[0026] Figure 3 for Figure 1 A schematic diagram of the split structure of the connecting device shown;

[0027] Figure 4 for Figure 3 An enlarged view of point A is shown.

[0028] Numbers in the figure: 1. Spring core shaft; 2. Connecting device; 201. Fixed disk; 202. Fixed block; 203. Connecting disk; 204. Fixed groove; 205. Top plate; 206. Connecting block; 207. Screw; 208. Adjusting block; 209. Connecting tube; 210. Limiting rod; 211. Guide block; 212. Metal ring; 213. Magnetic ring; 214. Force block; 215. Connecting shell; 216. Anti-skid groove; 217. Protective pad; 3. Ball nut body. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0031] See also Figures 1 to 4 The embodiment of the utility model provides a clamping device for processing a ball nut, comprising: a spring core shaft 1, a ball nut body 3 is slidably connected to the circular arc surface of the spring core shaft 1, and a connecting device 2 is provided at one end of the circular arc surface of the spring core shaft 1.

[0032] In the embodiments of the present invention, please refer to Figures 2 to 4The connecting device 2 includes a fixed disk 201, which is fixedly connected to the spring core shaft 1. The arc surface of the fixed disk 201 is fixedly connected with a plurality of fixed blocks 202, and the plurality of fixed blocks 202 are evenly distributed on the fixed disk 201. The arc surface of the fixed disk 201 is provided with a connecting disk 203. The inner wall of the connecting disk 203 is provided with a plurality of fixed grooves 204, and the plurality of fixed grooves 204 are evenly distributed in the inner wall of the connecting disk 203. The plurality of fixed grooves 204 are respectively slidably connected with the plurality of fixed blocks 202. A top plate 205 is fixedly connected to the side of the connecting disk 203 away from the ball nut body 3. A connecting block 206 is fixedly connected to one end of the arc surface of the connecting disk 203. A screw 207 is threadedly connected to the inner wall of the connecting block 206. The screw 2 07 One end close to the ball nut body 3 is rotatably connected with an adjusting block 208. At present, when grinding the outer circle of the ball nut body 3, a conical core shaft is usually used. The manufacturing process of this core shaft is simple and quick, but the contact between the core shaft and the inner hole of the ball nut body 3 is line contact. Because the inner hole of the ball nut body 3 is a through hole, and the outer circle of the core shaft is conical, the contact surface is small, and there is only partial contact. Another thing is that the operator has to knock the ball nut body 3 and the core shaft tightly when loading the material. The force of this knocking is difficult to keep consistent. Too much force will cause the outer circle of the ball nut body 3 to deform and the processing size to be out of tolerance. Too little force will cause the nut to move when grinding the outer circle, and there is a risk of flying goods. The spring core shaft 1 consists of a core shaft body, a spring sleeve, and a locking nut. It can be very The ball nut body 3 is better fixed on the spring core shaft 1, so as to improve the stability of the connection between the ball nut body 3 and the spring core shaft 1, so that the fixing effect of the ball nut body 3 when grinding the outer circle of the ball nut body 3 can be improved through the spring core shaft 1. The adjusting block 208 is fixedly connected with a connecting tube 209 on the side close to the screw rod 207. The inner wall of the connecting tube 209 is slidably connected to the limiting rod 210. The limiting rod 210 is fixedly connected to the ball nut body 3. When the adjusting block 208 is used to contact the ball nut body 3, the connecting tube 209 on the adjusting block 208 can first be allowed to contact the limiting rod 210 on the ball nut body 3. The contact between the connecting tube 209 and the limiting rod 210 can limit the angle of the adjusting block 208 At the same time, it can also improve the fixing effect of the adjusting block 208 on the ball nut body 3. The end of the limiting rod 210 close to the adjusting block 208 is fixedly connected with a guide block 211. The cross-section of the guide block 211 is arc-shaped. When the limiting rod 210 is connected to the connecting tube 209, the guide block 211 installed on the limiting rod 210 can increase the connection efficiency of the limiting rod 210 and the connecting tube 209, and improve the speed of the connection between the connecting tube 209 and the limiting rod 210. The end of the arc surface of the limiting rod 210 away from the guide block 211 is fixedly connected with a metal ring 212, and the end of the arc surface of the connecting tube 209 away from the adjusting block 208 is fixedly connected with a magnetic ring 213. The metal ring 212 and the magnetic ring 213 are attracted to each other. When the connecting tube 209 contacts the limiting rod 210,The magnetic ring 213 installed on the connecting tube 209 will be adsorbed with the metal ring 212 installed on the limiting rod 210, so that the connecting tube 209 can be temporarily fixed on the limiting rod 210, which is convenient for the subsequent rotation of the screw 207 to fix the ball nut body 3 on the spring core shaft 1. The end of the screw 207 away from the adjustment block 208 is fixedly connected with a force block 214. When the screw 207 needs to be rotated, the force block 214 installed at one end of the screw 207 can be used to adjust the screw 207. The force block 214 can improve the efficiency of the screw 207, thereby improving the efficiency of fixing the ball nut body 3 on the spring core shaft 1. The force block 214 is fixedly connected to a connecting shell 215 on one side away from the screw 207. Both sides of the connecting shell 215 are provided with a plurality of anti-skid grooves 216. The plurality of anti-skid grooves 216 are evenly distributed on the side of the connecting shell 215. When the force block 214 is used to rotate the screw 207, the anti-skid grooves 216 on the connecting shell 215 are 6 can increase the friction between the hand and the force block 214 when using the force block 214, and the anti-slip groove 216 can improve the efficiency of using the force block 214 to rotate the screw 207. The top plate 205 is fixedly connected to the side close to the fixed plate 201 with a protective pad 217, and the cross-sectional size of the protective pad 217 is the same as the cross-sectional size of the top plate 205. When the connecting plate 203 is connected to the fixed plate 201, the fixed block 202 installed on the fixed plate 201 will contact the connecting plate 203. 03, the top plate 205 installed on the top plate 205 comes into contact with the top plate 205. At this time, the protective pad 217 installed on the top plate 205 can protect the top plate 205 to prevent the top plate 205 and the fixing block 202 from being damaged when they come into contact with each other under the drive of the screw 207. The fixing block 202 is a titanium alloy block. The surface of the fixing block 202 made of titanium alloy is relatively hard, which also makes it difficult for the surface of the fixing block 202 made of titanium alloy to deform when used for a long time, and the use effect is better.

[0033] The working principle of a clamping device for processing ball nuts provided by the utility model is as follows: when it is necessary to fix the ball nut body 3 through the spring core shaft 1, the spring core shaft 1 is composed of a core shaft body, a spring sleeve, and a locking nut. The ball nut body 3 is first sleeved on the spring core shaft 1, and the fixing groove 204 on the connecting plate 203 is used to connect with the fixing block 202 on the fixing plate 201, and the top plate 205 is pressed against the fixing block 202, and the screw rod 207 is rotated. The screw 207 rotates in the connecting block 206 to drive the adjusting block 208 to move upward, so that the adjusting block 208 can contact the lower end of the ball nut body 3, and under the action of the screw 207 driving the adjusting block 208, the ball nut body 3 can be fixed to the spring core shaft 1. The ball nut body 3 is fixed on the spring core shaft 1. When the adjusting block 208 is used to contact the ball nut body 3, the connecting tube 209 on the adjusting block 208 can first be made to contact the limiting rod 210 on the ball nut body 3. The contact between the connecting tube 209 and the limiting rod 210 can limit the angle of the adjusting block 208 and improve the fixing effect of the adjusting block 208 on the ball nut body 3. When the limiting rod 210 is connected to the connecting tube 209, the guide block 211 installed on the limiting rod 210 can increase the efficiency of the connection between the limiting rod 210 and the connecting tube 209, improve the speed of the connection between the connecting tube 209 and the limiting rod 210, and the connecting tube 209 and the limiting rod 210 can be connected. When the screw 207 is in contact with the rod 210, the magnetic ring 213 installed on the connecting tube 209 will be adsorbed with the metal ring 212 installed on the limiting rod 210, so that the connecting tube 209 can be temporarily fixed on the limiting rod 210, so as to facilitate the subsequent rotation of the screw 207 to fix the ball nut body 3 on the spring core shaft 1. When the screw 207 needs to be rotated, the force block 214 installed at one end of the screw 207 can be used to rotate the screw 207. The force block 214 can improve the efficiency of the rotation of the screw 207, thereby improving the efficiency of fixing the ball nut body 3 on the spring core shaft 1. When the force block 214 is used to rotate the screw 207, the anti-slip groove 216 provided on the connecting shell 215 can increase the hand and the anti-slip groove 216 when the force block 214 is used. The friction between the force-adding block 214 and the anti-skid groove 216 can improve the efficiency of using the force-adding block 214 to rotate the screw 207. When the connecting disk 203 is used to connect with the fixed disk 201, the fixed block 202 installed on the fixed disk 201 will contact the top plate 205 installed on the connecting disk 203. At this time, the protective pad 217 installed on the top plate 205 can protect the top plate 205 to prevent the top plate 205 and the fixed block 202 from contacting each other under the drive of the screw 207, which may cause damage to both. The surface of the fixed block 202 made of titanium alloy is relatively hard, which also makes it difficult for the surface of the fixed block 202 made of titanium alloy to deform when used for a long time, and the use effect is better.

[0034] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A clamping device for processing ball nuts, characterized in that: include: A spring mandrel (1), wherein the arc surface of the spring mandrel (1) is slidably connected to a ball nut body (3), a connecting device (2) is provided at one end of the arc surface of the spring mandrel (1), the connecting device (2) comprises a fixed disk (201), the fixed disk (201) is fixedly connected to the spring mandrel (1), the arc surface of the fixed disk (201) is fixedly connected to a plurality of fixed blocks (202), the plurality of fixed blocks (202) are evenly distributed on the fixed disk (201), the arc surface of the fixed disk (201) is provided with a connecting disk (203), the inner wall of the connecting disk (203) is provided with A plurality of fixing grooves (204) are evenly distributed in the inner wall of the connecting plate (203); the plurality of fixing grooves (204) are respectively slidably connected to a plurality of fixing blocks (202); a top plate (205) is fixedly connected to a side of the connecting plate (203) away from the ball nut body (3); a connecting block (206) is fixedly connected to one end of the arc surface of the connecting plate (203); a screw rod (207) is threadedly connected to the inner wall of the connecting block (206); and an adjusting block (208) is rotatably connected to one end of the screw rod (207) close to the ball nut body (3).

2. A clamping device for processing ball nuts according to claim 1, characterized in that: A connecting tube (209) is fixedly connected to one side of the adjusting block (208) close to the screw rod (207); a limiting rod (210) is slidably connected to the inner wall of the connecting tube (209); and the limiting rod (210) is fixedly connected to the ball nut body (3).

3. A clamping device for processing ball nuts according to claim 2, characterized in that: One end of the limiting rod (210) close to the adjusting block (208) is fixedly connected to a guide block (211), and the cross section of the guide block (211) is arc-shaped.

4. A clamping device for processing ball nuts according to claim 2, characterized in that: One end of the arc surface of the limiting rod (210) away from the guide block (211) is fixedly connected to a metal ring (212), and one end of the arc surface of the connecting tube (209) away from the adjustment block (208) is fixedly connected to a magnetic ring (213), and the metal ring (212) and the magnetic ring (213) are attracted to each other.

5. The clamping device for processing ball nuts according to claim 1, characterized in that: One end of the screw rod (207) away from the adjustment block (208) is fixedly connected to a force adding block (214).

6. A clamping device for processing ball nuts according to claim 5, characterized in that: A connecting shell (215) is fixedly connected to the side of the force adding block (214) away from the screw rod (207), and a plurality of anti-slip grooves (216) are provided on both sides of the connecting shell (215). The plurality of anti-slip grooves (216) are evenly distributed on the side surfaces of the connecting shell (215).

7. The clamping device for processing ball nuts according to claim 1, characterized in that: A protection pad (217) is fixedly connected to one side of the top plate (205) close to the fixed disk (201); the cross-sectional dimensions of the protection pad (217) are the same as those of the top plate (205).

8. The clamping device for processing ball nuts according to claim 1, characterized in that: The fixing block (202) is a titanium alloy block.

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