External thread grinding machine of ball screw

Abstract

The utility model discloses an external thread grinding machine of a ball screw, which belongs to the field of screw grinding and comprises a linear guide rail fixed on the surface of a support platform, a first clamping slider is fixedly mounted on the linear guide rail, and a second clamping slider is slidably connected to one side, far away from the first clamping slider, of the linear guide rail. A stepping motor is fixedly connected to the side, away from the first clamping sliding block, of the second clamping sliding block, and the driving end of the stepping motor is rotationally connected with the second clamping sliding block in a penetrating mode. A round grinding tool is installed in the grinding sliding block and slidably connected with a threaded groove of the machining lead screw, and a tool angle adjusting mechanism is installed at the bottom of the round grinding tool. Through the arrangement of the circular cutter placing structure and the penetrating grinding sliding block, the angle of the cutter can be adjusted, different lead screws can be ground, the device is suitable for different lead screw types, and meanwhile the influence of vibration on grinding of the ball screw is reduced by guaranteeing the connection stability through penetrating clamping.

Description

Technical Field

[0001] The utility model relates to the technical field of screw grinders, in particular to an external thread grinder for ball screws. Background Art

[0002] Ball screws are the most commonly used transmission components in precision machinery. Their main function is to convert rotational motion into linear motion, with characteristics such as high precision and high efficiency. At the same time, the frictional resistance is relatively small, and ball screws are widely used in equipment in various industries.

[0003] The external thread grinder for ball screws is a type of grinder. At present, the processing of the external threads of screws is a major difficulty in the processing industry. Most grinders on the market usually cannot freely adjust the tool angle. To grind different ball screws, different tools need to be replaced; vibrations may occur during tool grinding, damaging the grinding of the screw, greatly increasing the processing cost; at the same time, large particle flying chips generated during processing pose a safety hazard to operators.

[0004] Therefore, there is an urgent need to provide an external thread grinder for ball screws to solve the above problems. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that the cost of adjusting the tool angle of the existing external thread grinder is relatively high, different types of ball screws cannot be made universal, and it is not convenient to replace the tool; at the same time, vibrations during processing affect the processing accuracy of the ball screw; in addition, the danger coefficient during grinding processing is relatively large and it does not have protection.

[0006] To solve the above technical problems, a technical solution adopted by the utility model is: to provide an external thread grinder for ball screws, including a linear guide fixed on the surface of a support platform, and a grinding slider is installed directly above the linear guide. The linear guide is fixedly installed with a first clamping slider, and a second clamping slider is slidably connected to the side of the linear guide away from the first clamping slider. A processing screw is arranged between the first clamping slider and the second clamping slider. A stepping motor is fixedly connected to the side of the second clamping slider away from the first clamping slider, and the driving end of the stepping motor is rotatably connected through the second clamping slider;

[0007] A circular grinding tool is installed inside the grinding slider. The circular grinding tool is slidably connected to the thread groove of the processing screw, and a tool angle adjustment mechanism is installed at the bottom of the circular grinding tool;

[0008] A circular limit guide is slidably connected through one side of the grinding slider, and support plates fixedly connected to the surface of the support platform are fixed at both ends of the circular limit guide.

[0009] The present utility model is further configured as follows: The tool adjusting mechanism includes a limiting groove provided on the lower surface of the grinding slider. The limiting groove is located directly above the linear guide rail. A first spring is slidably connected to the inner wall of the limiting groove. The bottom of the first spring is fixedly connected to a gear buckle, and the lower surface of the gear buckle is fixedly connected to a circular handle.

[0010] Through the above technical solution, positioning is carried out through the circular handle, and at the same time, quick installation and disassembly can be carried out.

[0011] The present utility model is further configured as follows: There is a gear groove directly below the limiting groove. The gear buckle and the gear groove are arranged in a gear shape. The gear groove is completely fitted with the gear buckle, and the gear buckle and the gear groove are meshed and connected through gear teeth.

[0012] Through the above technical solution, the gear buckle and the gear groove have gear tooth fits at various angles, and the gear meshing connection is more firm and stable.

[0013] The present utility model is further configured as follows: A positioning block is provided directly above the gear buckle, and the positioning block is fixedly connected to the lower surface of the circular grinding tool. Connecting shafts are fixedly connected at both ends between the positioning block and the gear buckle. The connecting shafts are slidably connected through the grinding slider and are fixedly connected to the lower surface of the positioning block.

[0014] Through the above technical solution, the positioning block fixedly connected to the lower surface of the circular grinding tool with the connecting shaft is changed at different angles, so that the tool angle can be freely changed to be used for grinding different types of ball screws, reducing the grinding cost. At the same time, the through-integrated design reduces the influence on the accuracy caused by tool vibration.

[0015] The present utility model is further configured as follows: The first clamping slider includes a box body. A baffle is slidably connected to the inner wall of the box body. A second spring is fixedly connected between the box body and the baffle. An opening is provided on one side of the box body close to the first clamping slider. A number of uniformly distributed fixed sleeves are fixedly connected at the opening position of the box body. A third spring is fixedly connected to the inner wall of the fixed sleeve. A positioning groove is slidably connected to the inner wall of the fixed sleeve, and the third spring is fixedly connected to the positioning groove.

[0016] Through the above technical solution, the baffle horizontally positions the processed screw rod at a suitable processing position, and the uniformly distributed fixed sleeves prevent unnecessary displacement of the screw rod during processing, improving the stability of grinding.

[0017] The present utility model is further configured as follows: A rotating block is provided on one side of the second clamping slider away from the stepping motor, and the rotating block is fixedly connected to the driving end of the stepping motor. A tightening groove is provided on one side of the rotating block away from the stepping motor, and the side of the processed screw rod away from the first clamping slider is slidably connected to the tightening groove.

[0018] Through the above technical solution, the motor drives the processing lead screw that abuts on the rotating block to rotate, and the processing lead screw is polished in the polishing slider.

[0019] The present utility model is further configured as: a dust storage box is fixedly connected to the upper surface of the polishing slider, a dust suction pipe is fixedly connected to the upper surface of the dust storage box, and a dust suction hood is fixedly connected to one side of the dust suction pipe away from the dust storage box.

[0020] Through the above technical solution, the safety hazard of flying chips to the operator is reduced, and at the same time, the influence of flying chips on the accuracy during processing is reduced.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1. By designing a simple tool angle adjustment mechanism, the gear buckle is separated from the gear groove by pulling down the circular handle, and the circular handle is rotated for meshing at different angles to change the tool angle, so that the grinding machine can adapt to different external threads of the ball screw, improving the applicability of the grinding machine and reducing the processing cost.

[0023] 2. By designing to penetrate the polishing slider and clamp the slider at both ends, the lead screw to be processed is fixed in the polishing slider. One end of the processing lead screw close to the stepping motor is connected to the rotating block, and the other end away from the stepping motor abuts against the baffle at the open end of the first clamping slider and is tightly fixed by the evenly distributed fixed sleeves to ensure the stability of the connection and reduce the influence of vibration on the polishing of the ball screw.

[0024] 3. By setting a dust suction hood, the dust suction hood is moved and placed directly above the circular grinding tool, and the flying chips generated by grinding are sucked away by the dust suction hood and absorbed into the dust storage box through the dust suction pipe, ensuring the safety of the operator's life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the first perspective view of the present invention;

[0026] Figure 2 is the second perspective view of the present invention;

[0027] Figure 3 is the third perspective view of the present invention;

[0028] Figure 4 is the three-dimensional structure diagram of the present invention;

[0029] Figure 5 is the sectional view taken along the line A-A of the present invention;

[0030] Figure 6 is in the present invention Figure 3 is the schematic diagram of the partial enlarged view at C in;

[0031] Figure 7 In the present invention Figure 5 is a schematic diagram of a partial enlarged view at position B in

[0032] Figure 8 In the present invention Figure 1 is a schematic diagram of a partial enlarged view at position A in

[0033] Figure 9 is a schematic diagram of the structure of a circular grinding tool in the present invention;

[0034] Reference numerals: 1, grinding slider; 2, linear guide rail; 3, support platform; 4, first clamping slider; 401, second spring; 402, baffle; 403, third spring; 404, positioning groove; 405, box body; 406, fixed sleeve; 5, processing lead screw; 6, second clamping slider; 601, abutting groove; 7, stepping motor; 8, circular grinding tool; 9, tool angle adjustment mechanism; 901, positioning block; 902, limiting groove; 903, circular handle; 904, first spring; 905, gear buckle; 906, gear groove; 907, connecting shaft; 10, circular limiting guide rail; 11, support plate; 12, dust storage box; 13, dust suction pipe; 14, dust suction hood. Detailed implementation manners

[0035] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0036] Please refer to Figures 1 - 5 , an external thread grinding machine for a ball screw, including a linear guide rail 2 fixed on the surface of a support platform 3. The support platform 3 and the linear guide rail 2 are of an integral structure, making the whole more simple and reliable; and a grinding slider 1 is installed above the linear guide rail 2. A first clamping slider 4 is fixedly installed on the linear guide rail 2. A second clamping slider 6 is slidably connected to the side of the linear guide rail 2 away from the first clamping slider 4. A processing lead screw 5 is arranged between the first clamping slider 4 and the second clamping slider 6, which can better fix the ball screw and improve the stability of grinding; a dust storage box 12 is fixedly connected to the upper surface of the grinding slider 1. A dust suction pipe 13 is fixedly connected to the upper surface of the dust storage box 12. A dust suction hood 14 is fixedly connected to the side of the dust suction pipe 13 away from the dust storage box 12, sucking away the flying chips generated by grinding the lead screw, reducing the safety hazards of the operation and improving the grinding accuracy;

[0037] As Figures 7 - 9As shown in the figure, a circular grinding tool 8 is installed inside the grinding slider 1. A tool angle adjustment mechanism 9 is installed at the bottom of the circular grinding tool 8. The tool angle adjustment mechanism 9 includes a limit groove 902 provided on the lower surface of the grinding slider 1. The limit groove 902 is located directly above the linear guide rail 2. A first spring 904 is slidably connected to the inner wall of the limit groove 902. The bottom of the first spring 904 is fixedly connected to a gear buckle 905. The lower surface of the gear buckle 905 is fixedly connected to a circular handle 903. Positioning is carried out through the circular handle 903, and at the same time, quick installation and disassembly can be carried out. There is a gear groove 906 directly below the limit groove 902. The gear buckle 905 and the gear groove 906 are arranged in a gear shape. The gear groove 906 is completely fitted with the gear buckle 905, and the gear buckle 905 and the gear groove 906 are connected by meshing of teeth. A positioning block 901 is provided directly above the gear buckle 905, and the positioning block 901 is fixedly connected to the lower surface of the circular grinding tool 8. Two ends between the positioning block 901 and the gear buckle 905 are fixedly connected to a connecting shaft 907. The connecting shaft 907 is slidably connected through the grinding slider 1 and is fixedly connected to the lower surface of the positioning block 901. When in use, rotate the circular handle 903 to make the gear buckle 905 mesh with the gear groove 906 at different angles, driving the positioning block 901 fixedly connected to the lower surface of the circular grinding tool 8 to achieve changes in different tool angles;

[0038] As Figure 3 and 6 shown in the figure, a first clamping slider 4 is fixedly installed on the linear guide rail 2. The first clamping slider 4 includes a box body 405. A baffle 402 is slidably connected to the inner wall of the box body 405. A second spring 401 is fixedly connected between the box body 405 and the baffle 402. An opening is provided on one side of the box body 405 close to the second clamping slider 6. A number of uniformly distributed fixed sleeves 406 are fixedly connected at the opening position of the box body 405. A third spring 403 is fixedly connected to the inner wall of the fixed sleeve 406. A positioning groove 404 is slidably connected to the inner wall of the fixed sleeve 406, and the third spring 403 is fixedly connected to the positioning groove 404. The baffle 402 horizontally positions the processing lead screw 5 at a suitable processing position. The uniformly distributed fixed sleeves 406 prevent unnecessary displacement of the lead screw during processing and improve the stability of grinding;

[0039] As Figure 3 shown in the figure, a rotating block is provided on one side of the second clamping slider 6 away from the stepping motor 7, and the rotating block is fixedly connected to the driving end of the stepping motor 7. A tightening groove 601 is provided on one side of the rotating block away from the stepping motor 7, and one side of the processing lead screw 5 away from the first clamping slider 4 is slidably connected to the tightening groove 601. The stepping motor 7 drives the tightened lead screw to perform grinding on the tool.

[0040] When the utility model is in use, the ball screw to be polished is fixed on the side of the second clamping slider 6 close to the polishing slider 1. The second clamping slider 6 is driven to move horizontally along the linear guide rail 2 at the upper end of the support platform 3 until it reaches the open end of the first clamping slider 4. One end of the processing screw rod 5 close to the first clamping slider 4 is closely attached to the baffle plate 402 and is fixed by the uniformly distributed fixing sleeves 406. The polishing slider 1 is horizontally moved to a suitable position through the circular limiting guide rail 10 fixedly connected with the support plate 11. At this time, the circular handle 903 is pulled downwards, so that the gear buckle 905 leaves the gear groove 906. At the same time, the circular handle 903 is rotated to adjust the tool angle adjusting mechanism 9, and the circular polishing tool 8 is adjusted to the tool angle close to the processing screw rod 5 to be processed. The stepping motor 7 rotates to drive the processing screw rod 5 abutted against the rotating block, and the processing screw rod 5 and the circular polishing tool 8 perform grinding. The generated flying chips are sucked away by the dust suction hood 14 and enter the dust storage box 12 through the dust suction pipe 13, completing the overall processing of the processing screw rod 5.

[0041] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A ball screw external thread grinding machine, comprising a linear guide rail (2) fixed on the surface of a supporting platform (3), characterized in that: A grinding slider (1) is installed directly above the linear guide rail (2); a first clamping slider (4) is fixedly installed on the linear guide rail (2); a second clamping slider (6) is slidably connected to the side of the linear guide rail (2) away from the first clamping slider (4); a processing screw rod (5) is provided between the first clamping slider (4) and the second clamping slider (6); a stepping motor (7) is fixedly connected to the side of the second clamping slider (6) away from the first clamping slider (4); and a driving end of the stepping motor (7) is slidably connected to the second clamping slider (6); A circular grinding tool (8) is installed inside the grinding slide block (1), the circular grinding tool (8) is slidably connected to the thread groove of the processing screw rod (5), and a tool angle adjustment mechanism (9) is installed at the bottom of the circular grinding tool (8); A circular position-limiting guide rail (10) is slidably connected through one side of the grinding slide block (1), and support plates (11) fixedly connected to the surface of the support platform (3) are fixed at both ends of the circular position-limiting guide rail (10).

2. The external thread grinding machine for ball screw according to claim 1, characterized in that: The tool angle adjustment mechanism (9) comprises a limiting groove (902) arranged on the lower surface of the grinding slider (1), the limiting groove (902) is located directly above the linear guide rail (2), the inner wall of the limiting groove (902) is slidably connected to a first spring (904), the bottom of the first spring (904) is fixedly connected to a gear buckle (905), and the lower surface of the gear buckle (905) is fixedly connected to a round handle (903).

3. The external thread grinding machine for ball screw according to claim 2, characterized in that: There is a gear groove (906) directly below the limiting groove (902), the gear buckle (905) and the gear groove (906) are arranged in a gear shape, the gear groove (906) and the gear buckle (905) are completely fitted, and the gear buckle (905) and the gear groove (906) are connected by gear tooth meshing.

4. The external thread grinding machine for ball screw according to claim 2, characterized in that: A positioning block (901) is arranged directly above the gear buckle (905), and the positioning block (901) is fixedly connected to the lower surface of the circular grinding tool (8). A connecting shaft (907) is fixedly connected at both ends between the positioning block (901) and the gear buckle (905), and the connecting shaft (907) is slidably connected to the grinding slider (1) and is fixedly connected to the lower surface of the positioning block (901).

5. The external thread grinding machine for ball screw according to claim 1, characterized in that: The first clamping slider (4) comprises a box body (405), the inner wall of which is slidably connected to a baffle (402), a second spring (401) is fixedly connected between the box body (405) and the baffle (402), an opening is provided on one side of the box body (405) close to the second clamping slider (6), a plurality of evenly distributed fixed sleeves (406) are fixedly connected to the box body (405) at the opening position, a third spring (403) is fixedly connected to the inner wall of the fixed sleeve (406), the inner wall of the fixed sleeve (406) is slidably connected to a positioning groove (404), and the third spring (403) is fixedly connected to the positioning groove (404).

6. The external thread grinding machine for ball screw according to claim 1, characterized in that: A rotating block is provided on the side of the second clamping slider (6) away from the stepping motor (7), and the rotating block is fixedly connected to the driving end of the stepping motor (7); a clamping groove (601) is provided on the side of the stepping motor (7) close to the rotating block, and the side of the machining screw rod (5) away from the first clamping slider (4) is slidably connected to the clamping groove (601).

7. The external thread grinding machine for ball screw according to claim 1, characterized in that: The upper surface of the grinding slider (1) is fixedly connected to a dust storage box (12), the upper surface of the dust storage box (12) is fixedly connected to a dust suction pipe (13), and the dust suction pipe (13) is fixedly connected to a dust suction cover (14) on the side away from the dust storage box (12).

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