Ball screw dustproof device

Abstract

The utility model relates to the field of ball screws, in particular to a dustproof device for a ball screw. Comprising a ball screw body, a connecting device is arranged on the arc surface of the ball screw body, the connecting device comprises a ball nut, the ball nut is slidably connected with the ball screw body, one end of the ball nut fixedly communicates with a connecting disc, and a connecting groove is formed in the inner wall of the connecting disc; the inner wall of the connecting groove is fixedly connected with a dustproof ring, and the end, away from the side face of the ball nut, of the connecting disc is fixedly connected with a connecting rod. According to the dustproof device for the ball screw, when dust prevention needs to be conducted on the ball screw, the ball screw can be sleeved with the connecting device, dust prevention can be conducted on the ball screw through the connecting device, the dustproof effect of the connecting device on the ball screw is good, the ball screw can be prevented from being damaged by dust or scrap iron, and the service life of the ball screw is prolonged. Therefore, the service life of the ball screw is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of ball screws, in particular to a dust-proof device for a ball screw. Background Art

[0002] Ball screws are widely used in CNC machine tools and automatic control machinery. They are important actuators for precise positioning of CNC machine tools. The positioning accuracy and service life of CNC machine tools mainly depend on the accuracy of ball screws.

[0003] Among various dust-proof methods for ball screw pairs, the most commonly used connection method is to install the dust ring on the nut and tighten it with a triangular thread screw. The dust ring of the ball screw pair plays a dust-proof role during the transmission process. The dust ring is made of polytetrafluoroethylene and nylon. The material is hard, the top screw is difficult to screw in, and the surface of the dust ring is shallow, so the load-bearing capacity is low.

[0004] With regard to the above-mentioned relevant contents, the following technical defects exist: the method of installing the dust ring on the nut and tightening it with a triangular thread nail has poor impact resistance and reliability. Under the action of impact torque, the dust ring is easily screwed out of the nut and fails to play a dust-proof role. The ball screw pair is damaged by dust or debris and iron filings, and the raceway surface is easily scratched and pitted, causing the ball screw pair to lose precision and affecting the service life of the ball screw. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the method of connecting the dust ring on the nut and tightening it with a triangular thread nail wire in the prior art has poor impact resistance and reliability. Under the action of impact torque, the dust ring is easy to be screwed out of the nut, and the dustproof effect cannot be achieved. Due to the action of dust or debris iron filings, the ball screw pair is damaged, the raceway surface is easy to be scratched and pitted, the ball screw pair loses accuracy, and the service life of the ball screw is affected.

[0006] In order to solve the above technical problems, the utility model provides a ball screw dustproof device, comprising: a ball screw body, an arc surface of the ball screw body is provided with a connecting device, the connecting device comprises a ball nut, the ball nut is slidably connected to the ball screw body, one end of the ball nut is fixedly connected to a connecting plate, the inner wall of the connecting plate is provided with a connecting groove, the inner wall of the connecting groove is fixedly connected to a dust ring, the side end of the connecting plate away from the ball nut is fixedly connected to a connecting rod, the end of the connecting rod away from the connecting plate is fixedly connected to an adjusting block, a screw is slidably penetrated through the inner wall of the adjusting block, the arc surface of the screw is threadedly connected to an adjusting plate, the inner wall of the adjusting plate is slidably connected to the adjusting block, one end of the screw is slidably connected to the connecting block, and the side of the connecting block away from the screw is fixedly connected to a clamp.

[0007] The effect achieved by the above components is: among the various dust-proof methods of ball screw pairs, the dust-proof ring is generally installed on the nut and tightened with a triangular thread nail. The dust-proof ring plays a dust-proof role during the transmission process of the ball screw pair. The dust-proof ring is made of polytetrafluoroethylene and nylon materials. The material is hard, the top screw is difficult to screw in, and the surface of the dust-proof ring is shallow, so the bearing capacity is low. This method has poor impact resistance and poor reliability. Under the action of impact torque, the dust-proof ring is easy to be screwed out of the nut and cannot play a dust-proof role. Due to the action of dust or debris iron filings, the ball screw pair is damaged, the raceway surface is easy to be scratched, waste pitting, and the ball screw pair loses precision. The dust-proof effect of the ball screw body can be improved by using a connecting device, thereby increasing the service life of the ball screw body.

[0008] Preferably, a side of the adjusting block away from the connecting rod is fixedly connected with a plurality of auxiliary blocks, and the plurality of auxiliary blocks are evenly distributed on one side of the adjusting block.

[0009] The effect achieved by the above components is: when the screw drives the adjustment plate to slide on the surface of the adjustment block, the auxiliary block installed on the adjustment block can reduce the contact area between the adjustment block and the adjustment plate, thereby increasing the adjustment speed of the adjustment plate on the surface of the adjustment block.

[0010] Preferably, one end of the screw rod away from the connection block is fixedly connected to a turntable, and the cross-section of the turntable is circular.

[0011] The effect achieved by the above components is: when the screw needs to be rotated, the turntable installed at one end of the screw can be used to rotate the screw. The turntable can increase the speed of the screw rotation, thereby driving the efficiency of the clamp to contact the ball screw body through the screw.

[0012] Preferably, a plurality of anti-skid grooves are fixedly connected to the arc surface of the turntable, and the plurality of anti-skid grooves are evenly distributed on the arc surface of the turntable.

[0013] The effect achieved by the above components is that when the turntable is used to rotate the screw, the anti-skid grooves on the turntable can increase the friction between the user's hand and the turntable, thereby improving the efficiency of the user rotating the screw through the turntable.

[0014] Preferably, one end of the screw rod away from the rotating disk is fixedly connected with a guide block.

[0015] The effect achieved by the above components is that when the screw rod is used to connect with the connecting block, the guide block installed on the screw rod can reduce the angle required for the connection between the screw rod and the connecting block, thereby increasing the speed of connection between the screw rod and the connecting block.

[0016] Preferably, a friction pad is fixedly connected to a side of the clamping opening away from the connecting block, and the friction pad is slidably connected to the ball screw body.

[0017] The effect achieved by the above components is that when the clamp is used to contact the surface of the ball screw body, the friction pad installed on the clamp can increase the friction between the clamp and the ball screw body, thereby improving the contact stability between the clamp and the ball screw body.

[0018] Preferably, the connecting rod is a titanium alloy rod.

[0019] The effects achieved by the above components are: the connecting rod made of titanium alloy has a harder rod surface, and it is difficult for the connecting rod made of titanium alloy to chemically react with the air during use, and it is difficult for the surface to oxidize, which also makes the connecting rod made of titanium alloy have a longer service life.

[0020] Preferably, the cross section of the clamp is arc-shaped.

[0021] The effect achieved by the above components is that the clamping opening with an arc-shaped cross section can increase the contact area between the clamping opening and the ball screw body, thereby improving the stability of the clamping opening when in contact with the ball screw body.

[0022] Compared with the related art, the ball screw dust prevention device provided by the utility model has the following beneficial effects:

[0023] The utility model provides a dustproof device for a ball screw. By arranging a connecting device, when the ball screw needs to be dustproof, the connecting device can be sleeved on the ball screw, and the ball screw can be dustproofed through the connecting device. The connecting device has a good dustproof effect on the ball screw, and can prevent dust or debris iron filings from damaging the ball screw, thereby increasing the service life of the ball screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a ball screw dust prevention device 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, ball screw body; 2, connecting device; 201, ball nut; 202, connecting plate; 203, connecting groove; 204, dust ring; 205, connecting rod; 206, adjusting block; 207, screw; 208, adjusting plate; 209, connecting block; 210, clamp; 211, auxiliary block; 212, turntable; 213, anti-skid groove; 214, friction pad; 215, guide block. 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 A ball screw dust prevention device provided by an embodiment of the utility model comprises: a ball screw body 1, and a connecting device 2 is provided on the arc surface of the ball screw body 1.

[0032] In the embodiments of the present invention, please refer to Figures 2 to 4The connecting device 2 includes a ball nut 201, which is slidably connected to the ball screw body 1. One end of the ball nut 201 is fixedly connected to a connecting plate 202. A connecting groove 203 is provided on the inner wall of the connecting plate 202. A dust ring 204 is fixedly connected to the inner wall of the connecting groove 203. A connecting rod 205 is fixedly connected to the side end of the connecting plate 202 away from the ball nut 201. An adjusting block 206 is fixedly connected to the end of the connecting rod 205 away from the connecting plate 202. A screw 207 is slidably penetrated through the inner wall of the adjusting block 206. The arc surface of the screw 207 is threadedly connected to the adjusting plate 20 8. The inner wall of the adjustment plate 208 is slidably connected to the adjustment block 206, one end of the screw 207 is slidably connected to the connecting block 209, and the connecting block 209 is fixedly connected to the side away from the screw 207 with a clamp 210. Among the various dust-proof methods of the ball screw pair, the dust ring 204 is generally installed on the nut and tightened with a triangular thread screw. The dust ring 204 of the ball screw pair plays a dust-proof role during the transmission process. The dust ring 204 is made of polytetrafluoroethylene and nylon materials. The material is hard, the top screw is difficult to screw in, and the surface of the dust ring 204 when the top screw is screwed in is shallow, so the bearing capacity is low.This method has poor impact resistance and reliability. Under the action of impact torque, the dust ring 204 is easy to screw out of the nut, and the dustproof effect is not achieved. The ball screw pair is damaged due to the action of dust or debris iron filings, and the raceway surface is easily scratched and pitted, causing the ball screw pair to lose accuracy. The dustproof effect of the ball screw body 1 can be improved by using the connecting device 2, thereby improving the service life of the ball screw body 1. The side of the adjusting block 206 away from the connecting rod 205 is fixedly connected with a plurality of auxiliary blocks 211, and the plurality of auxiliary blocks 211 are evenly distributed on one side of the adjusting block 206. When the screw 207 drives the adjusting plate 208 to slide on the surface of the adjusting block 206, the auxiliary block 21 installed on the adjusting block 206 1 can reduce the contact area between the adjustment block 206 and the adjustment plate 208, thereby increasing the speed at which the adjustment plate 208 is adjusted on the surface of the adjustment block 206. The end of the screw 207 away from the connection block 209 is fixedly connected with a turntable 212. The cross section of the turntable 212 is circular. When the screw 207 needs to be rotated, the turntable 212 installed at one end of the screw 207 can be used to rotate the screw 207. The turntable 212 can increase the speed of the screw 207 when it is rotated, so that the efficiency of the contact between the clamp 210 and the ball screw body can be driven by the screw 207. The arc surface of the turntable 212 is fixedly connected with a plurality of anti-skid grooves 213. The plurality of anti-skid grooves 213 are evenly distributed on the arc surface of the turntable 212. 12 to rotate the screw 207, the anti-skid groove 213 provided on the turntable 212 can increase the friction between the user's hand and the turntable 212, thereby improving the efficiency of the user rotating the screw 207 through the turntable 212. The end of the screw 207 away from the turntable 212 is fixedly connected with a guide block 215. When the screw 207 is connected to the connecting block 209, the guide block 215 installed on the screw 207 can reduce the angle required for the screw 207 to connect with the connecting block 209, thereby improving the speed of the connection between the screw 207 and the connecting block 209. The side of the clamp 210 away from the connecting block 209 is fixedly connected with a friction pad 214. The friction pad 214 is slidably connected to the ball screw body 1. When the surface of the ball screw body is in contact, the friction pad 214 installed on the clamp 210 can increase the friction between the clamp 210 and the ball screw body, thereby improving the stability of the contact between the clamp 210 and the ball screw body. The connecting rod 205 is a titanium alloy rod. The connecting rod 205 made of titanium alloy has a harder rod surface, and the connecting rod 205 made of titanium alloy is also less likely to chemically react with the air during use, and it is less likely to oxidize on the surface, which also makes the connecting rod 205 made of titanium alloy have a longer service life. The cross-section of the clamp 210 is arc-shaped. The clamp 210 with an arc-shaped cross-section can increase the contact area between the clamp 210 and the ball screw body, thereby improving the stability of the clamp 210 when in contact with the ball screw body.

[0033] The working principle of a ball screw dust prevention device provided by the utility model is as follows: when the ball screw body 1 needs to be dustproofed, the ball nut 201 is sleeved on the arc surface of the ball screw body 1, and then the screw 207 is rotated. The screw 207 rotates and slides up and down on the surface of the adjustment block 206 through the adjustment plate 208, and the connecting block 209 on the clamp 210 is connected with the lower end of the screw 207. Then, the screw 207 is continued to be rotated. The screw 207 rotates and drives the clamp 210 to contact the ball screw body 1 through the connecting block 209, so that the ball nut 201 can be connected to the ball screw body 1 through the connection between the clamp 210 and the ball screw body 1. 1 is temporarily fixed on the arc surface of the ball screw body 1, so that the dust ring 204 installed on the connecting groove 203 can be used to prevent dust on the ball screw body. When the screw 207 drives the adjustment plate 208 to slide on the surface of the adjustment block 206, the auxiliary block 211 installed on the adjustment block 206 can reduce the contact area between the adjustment block 206 and the adjustment plate 208, so as to increase the speed of the adjustment of the adjustment plate 208 on the surface of the adjustment block 206. When it is necessary to rotate the screw 207, the turntable 212 installed at one end of the screw 207 can be used to rotate the screw 207. The turntable 212 can increase the speed of the screw 207 when it is rotated. Thus, the efficiency of the contact between the clamp 210 and the ball screw body can be driven by the screw 207. When the turntable 212 is used to rotate the screw 207, the anti-skid groove 213 provided on the turntable 212 can increase the friction between the user's hand and the turntable 212, thereby improving the efficiency of the user rotating the screw 207 through the turntable 212. When the screw 207 is connected to the connecting block 209, the guide block 215 installed on the screw 207 can reduce the angle required for the connection between the screw 207 and the connecting block 209, thereby improving the speed of the connection between the screw 207 and the connecting block 209. When the surface of the screw body is in contact, the friction pad 214 installed on the clamp 210 can increase the friction between the clamp 210 and the ball screw body, thereby improving the stability of the contact between the clamp 210 and the ball screw body. The limit rod made of titanium alloy has a harder rod surface, and the limit rod made of titanium alloy is also less likely to chemically react with the air during use, and it is less likely to oxidize on the surface, which also makes the limit rod made of titanium alloy have a longer service life. The clamp 210 with an arc-shaped cross-section can increase the contact area between the clamp 210 and the ball screw body, thereby improving the stability of the clamp 210 when in contact with the ball screw body.

[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 ball screw dust prevention device, characterized in that: include: A ball screw body (1), wherein the arc surface of the ball screw body (1) is provided with a connecting device (2), wherein the connecting device (2) comprises a ball nut (201), wherein the ball nut (201) is slidably connected to the ball screw body (1), wherein one end of the ball nut (201) is fixedly connected to a connecting disk (202), wherein the inner wall of the connecting disk (202) is provided with a connecting groove (203), wherein the inner wall of the connecting groove (203) is fixedly connected to a dust ring (204), and wherein one end of the connecting disk (202) away from the side of the ball nut (201) is fixedly connected to the connecting disk (202). A connecting rod (205) is connected, and one end of the connecting rod (205) away from the connecting disk (202) is fixedly connected to an adjustment block (206), a screw rod (207) is slidably penetrated through the inner wall of the adjustment block (206), the arc surface of the screw rod (207) is threadedly connected to an adjustment plate (208), the inner wall of the adjustment plate (208) is slidably connected to the adjustment block (206), one end of the screw rod (207) is slidably connected to a connecting block (209), and a clamp (210) is fixedly connected to the side of the connecting block (209) away from the screw rod (207).

2. A ball screw dust prevention device according to claim 1, characterized in that: A plurality of auxiliary blocks (211) are fixedly connected to one side of the adjustment block (206) away from the connection rod (205), and the plurality of auxiliary blocks (211) are evenly distributed on one side of the adjustment block (206).

3. A ball screw dust prevention device according to claim 1, characterized in that: One end of the screw rod (207) away from the connection block (209) is fixedly connected to a rotating disk (212), and the cross section of the rotating disk (212) is circular.

4. A ball screw dust prevention device according to claim 3, characterized in that: A plurality of anti-skid grooves (213) are fixedly connected to the circular arc surface of the rotating disk (212), and the plurality of anti-skid grooves (213) are evenly distributed on the circular arc surface of the rotating disk (212).

5. A ball screw dust prevention device according to claim 1, characterized in that: One end of the screw rod (207) away from the rotating disk (212) is fixedly connected to a guide block (215).

6. A ball screw dust prevention device according to claim 1, characterized in that: A friction pad (214) is fixedly connected to a side of the clamping opening (210) away from the connection block (209), and the friction pad (214) is slidably connected to the ball screw body (1).

7. A ball screw dust prevention device according to claim 1, characterized in that: The connecting rod (205) is a titanium alloy rod.

8. A ball screw dust prevention device according to claim 1, characterized in that: The cross section of the clamping opening (210) is arc-shaped.

Images