CN220540232U - Feed screw nut anti-backlash assembly - Google Patents
Feed screw nut anti-backlash assembly Download PDFInfo
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- CN220540232U CN220540232U CN202321603549.0U CN202321603549U CN220540232U CN 220540232 U CN220540232 U CN 220540232U CN 202321603549 U CN202321603549 U CN 202321603549U CN 220540232 U CN220540232 U CN 220540232U
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- screw rod
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- 238000000034 method Methods 0.000 abstract description 3
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a screw-nut anti-backlash assembly, which relates to the technical field of anti-backlash equipment, and the structure of an existing anti-backlash device is complex, so that in the use process, the existing anti-backlash device has higher requirements on a user, and can only perform single anti-backlash operation.
Description
Technical Field
The utility model relates to the technical field of anti-backlash equipment, in particular to a lead screw nut anti-backlash assembly.
Background
In precision machinery, a screw nut is a transmission and positioning mechanism which is frequently used;
when the screw rod works for a long time, gaps are necessarily generated, however, in the precise numerical control equipment, precision errors are caused by the generation of the gaps of the screw rod, so that the performance of the whole machine is affected;
the structure of the existing gap eliminating device is complex, so that the requirement on a user is high in the using process, and the existing gap eliminating device can only perform single gap eliminating operation, and therefore the screw-nut gap eliminating assembly is provided for solving the problems.
Disclosure of Invention
The utility model aims to provide a screw-nut anti-backlash assembly to solve the problems set forth in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the screw-nut gap eliminating assembly comprises a base, the right side at base top is provided with the mounting box, mounting box inner chamber center department is provided with the motor, the power take off end of motor is provided with the motor shaft, the left side of motor shaft is provided with reciprocating screw, the screw groove has been seted up to reciprocating screw surface, the left side at base top and the left side of mounting box all are provided with the mount table, the surface at reciprocating screw center is provided with the removal nut, the inside equidistance that the removal nut is close to one side at reciprocating screw center distributes the ball, one side that the removal nut is kept away from the center is provided with gap eliminating mechanism, the rear side at base top is provided with the movable rail, the removal groove has been seted up to the inside at base front end center, the inside that the removal groove right side is close to the center is provided with the movable block.
As a preferable technical scheme of the utility model, the center of the right side of the reciprocating screw rod is fixedly connected with a motor shaft, and the reciprocating screw rod and the motor form a rotating structure through the motor shaft.
As a preferable technical scheme of the utility model, the reciprocating screw rod penetrates through the inner part of the center of the movable nut and extends to the inner part of the movable nut.
As a preferable technical scheme of the utility model, the rear side of the movable nut and the front end of the movable block form an integrated structure, and the movable nut is connected with the movable rail in an embedded manner through the movable block.
As a preferable technical scheme of the utility model, the gap eliminating mechanism comprises gap eliminating blocks, the gap eliminating blocks are equidistantly distributed on one side, far away from the center, of the interior of the movable nut, connecting pins are arranged at the left end and the right end of the gap eliminating blocks, connecting grooves are formed in the left end and the right end, close to the gap eliminating blocks, of the movable nut, an extending groove is formed in the interior, far away from the center, of the movable nut, a screw is arranged in the extending groove, an adjusting pin is arranged on the right side of the screw, a cone is arranged on the outer surface of the center of the screw, and adjusting grooves are formed in the right side, far away from the center, of the gap eliminating blocks and the right side, far away from the center, of the movable nut.
As a preferable technical scheme of the utility model, two ends of the anti-backlash block are respectively set to be 45-degree oblique angles, and one side of the anti-backlash block, which is close to the center of the movable nut, is tightly attached to the ball.
As a preferable technical scheme of the utility model, the outer surface of the center of the screw rod and the cone form an integrated structure, and the cone is arranged on the outer surface of the center of the screw rod and forms a horizontal moving structure through the screw rod and the adjusting pin.
Compared with the prior art, the utility model has the beneficial effects that:
1. through the arrangement of the balls, the friction force of the movable nut on the reciprocating screw rod and the thread groove in the moving process can be reduced, so that the damage degree of the reciprocating screw rod and the thread groove is reduced, and the service life of equipment is prolonged;
2. through the cooperation of clearance eliminating mechanism and inside each part is used, can be when using, through the removal of the position of cone, produce the thrust that is close to one side at removal nut center to the clearance eliminating piece, and then make the position of clearance eliminating piece remove to one side that is close to the removal nut center to reach the purpose of clearance eliminating, and because the both ends of clearance eliminating piece all set up to the degree oblique angle, make the clearance eliminating piece can carry out a lot of removal.
Drawings
Figure 1 is a schematic perspective view of the present utility model,
figure 2 is a schematic diagram of the front view structure of the present utility model,
FIG. 3 is a schematic view of a partial left-hand structure of the present utility model;
fig. 4 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.
In the figure: 1. a base; 2. a mounting box; 3. a motor; 4. a reciprocating screw rod; 5. a thread groove; 6. a mounting table; 7. moving the nut; 8. a ball; 9. an anti-backlash mechanism; 901. an anti-backlash block; 902. a connecting pin; 903. a screw; 904. an adjusting pin; 905. a cone; 10. a moving rail; 11. and (5) moving the block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: as shown in fig. 1-4, the utility model provides a screw nut anti-backlash assembly, which comprises a base 1, wherein the right side of the top of the base 1 is provided with a mounting box 2, the center of the inner cavity of the mounting box 2 is provided with a motor 3, the power output end of the motor 3 is provided with a motor shaft, the left side of the motor shaft is provided with a reciprocating screw 4, the outer surface of the reciprocating screw 4 is provided with a thread groove 5, the left side of the top of the base 1 and the left side of the mounting box 2 are both provided with a mounting table 6, the outer surface of the center of the reciprocating screw 4 is provided with a movable nut 7, balls 8 are equidistantly distributed in the inner part of one side of the movable nut 7 close to the center of the reciprocating screw 4, one side of the movable nut 7 far from the center is provided with an anti-backlash mechanism 9, the rear side of the top of the base 1 is provided with a movable rail 10, the inner part of the center of the front end of the base 1 is provided with a movable groove, and the inner part of the right side of the movable groove close to the center is provided with a movable block 11.
Further, the center of the right side of the reciprocating screw rod 4 is fixedly connected with a motor shaft, and the reciprocating screw rod 4 and the motor 3 form a rotating structure through the motor shaft.
Further, the reciprocating screw 4 penetrates the inside of the center of the traveling nut 7 and extends to the inside of the traveling nut 7.
Further, the rear side of the moving nut 7 and the front end of the moving block 11 form an integrated structure, and the moving nut 7 is connected with the moving rail 10 by the moving block 11.
Further, the gap eliminating mechanism 9 comprises gap eliminating blocks 901, the gap eliminating blocks 901 are equidistantly distributed on one side, away from the center, of the inner portion of the movable nut 7, connecting pins 902 are arranged at the left end and the right end of the gap eliminating blocks 901, connecting grooves are formed in the left end and the right end, close to the gap eliminating blocks 901, of the movable nut 7, extension grooves are formed in the inner portion, away from the center, of the movable nut 7, screw rods 903 are arranged in the extension grooves, adjusting pins 904 are arranged on the right side of the screw rods 903, a cone 905 is arranged on the outer surface, away from the center, of the gap eliminating blocks 901, and adjusting grooves are formed in the right side, away from the center, of the movable nut 7.
Further, both ends of the anti-backlash block 901 are set to be 45-degree oblique angles, and one side of the anti-backlash block 901, which is close to the center of the movable nut 7, is tightly attached to the ball 8.
Further, the outer surface of the center of the screw 903 and the cone 905 form an integrated structure, and the cone 905 is arranged on the outer surface of the center of the screw 903 to form a horizontal moving structure through the screw 903 and the adjusting pin 904.
Working principle: when the reciprocating screw rod driving device is used, the motor 3 is started, the motor shaft is driven to rotate through the motor 3, the center of the right side of the reciprocating screw rod 4 is fixedly connected with the motor shaft, the reciprocating screw rod 4 is driven to rotate through a rotating structure formed by the motor shaft and the motor 3, the reciprocating screw rod 4 penetrates through the inside of the center of the moving nut 7 and extends to the inside of the moving nut 7, the moving nut 7 moves on the outer surface of the reciprocating screw rod 4 by taking the moving rail 10 as a track, and balls 8 are distributed in the inside of one side, close to the center, of the moving nut 7 at equal intervals, and one side, close to the center, of the moving nut 7 is connected with the thread groove 5 in an embedded mode through the balls 8, so friction can be reduced;
along with the extension of the service time, the gap between the thread groove 5 and the ball 8 is enlarged, the adjusting pin 904 is rotated, the screw 903 is driven to rotate by the adjusting pin 904, and the position of the screw 903 is driven to move leftwards in the moving nut 7, because the outer surface of the center of the screw 903 and the cone 905 form an integrated structure, the cone 905 is driven to synchronously move leftwards, and the position of the gap eliminating block 901 is enabled to move towards one side close to the center of the moving nut 7 through the structural characteristics of the cone 905, so that the gap eliminating work is completed.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The screw-nut anti-backlash assembly comprises a base (1), and is characterized in that: the right side at base (1) top is provided with mounting box (2), mounting box (2) inner chamber center department is provided with motor (3), the power take off end of motor (3) is provided with the motor shaft, the left side at motor shaft is provided with reciprocating screw (4), screw thread groove (5) have been seted up to reciprocating screw (4) surface, the left side at base (1) top and the left side at mounting box (2) all are provided with mount table (6), the surface at reciprocating screw (4) center is provided with removal nut (7), the inside equidistance distribution of one side that removal nut (7) are close to reciprocating screw (4) center has ball (8), one side that removal nut (7) kept away from the center is provided with clearance elimination mechanism (9), the rear side at base (1) top is provided with movable rail (10), the inside at base (1) front end center has been seted up and has been removed groove right side and is close to inside at center and has been provided with movable block (11).
2. The lead screw nut anti-backlash assembly according to claim 1, characterized in that: the center of the right side of the reciprocating screw rod (4) is fixedly connected with a motor shaft, and the reciprocating screw rod (4) and the motor (3) form a rotating structure through the motor shaft.
3. The lead screw nut anti-backlash assembly according to claim 1, characterized in that: the reciprocating screw rod (4) penetrates through the inside of the center of the movable nut (7) and extends to the inside of the movable nut (7).
4. The lead screw nut anti-backlash assembly according to claim 1, characterized in that: the rear side of the movable nut (7) and the front end of the movable block (11) form an integrated structure, and the movable nut (7) is connected with the movable rail (10) in an embedded manner through the movable block (11).
5. The lead screw nut anti-backlash assembly according to claim 1, characterized in that: the clearance eliminating mechanism (9) comprises clearance eliminating blocks (901), the clearance eliminating blocks (901) are equidistantly distributed on one side, away from the center, of the inner portion of a movable nut (7), connecting pins (902) are arranged at the left end and the right end of the clearance eliminating blocks (901), connecting grooves are formed in the left end and the right end, close to the clearance eliminating blocks (901), of the movable nut (7), an extending groove is formed in the inner portion, away from the center, of the movable nut (7), a screw (903) is arranged in the extending groove, an adjusting pin (904) is arranged on the right side of the screw (903), a cone (905) is arranged on the outer surface, away from the center, of the clearance eliminating blocks (901), and an adjusting groove is formed in the right side, away from the center, of the movable nut (7).
6. The lead screw nut anti-backlash assembly according to claim 5, wherein: the two ends of the gap eliminating block (901) are respectively set to be 45-degree oblique angles, and one side, close to the center of the movable nut (7), of the gap eliminating block (901) is tightly attached to the ball (8).
7. The lead screw nut anti-backlash assembly according to claim 5, wherein: the outer surface of the center of the screw rod (903) and the cone (905) form an integrated structure, and the cone (905) is arranged on the outer surface of the center of the screw rod (903) and forms a horizontal moving structure through the screw rod (903) and the adjusting pin (904).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321603549.0U CN220540232U (en) | 2023-06-21 | 2023-06-21 | Feed screw nut anti-backlash assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321603549.0U CN220540232U (en) | 2023-06-21 | 2023-06-21 | Feed screw nut anti-backlash assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220540232U true CN220540232U (en) | 2024-02-27 |
Family
ID=89965266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321603549.0U Active CN220540232U (en) | 2023-06-21 | 2023-06-21 | Feed screw nut anti-backlash assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220540232U (en) |
-
2023
- 2023-06-21 CN CN202321603549.0U patent/CN220540232U/en active Active
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