CN215110360U - Novel mechanism for automatically eliminating transmission clearance of screw nut pair - Google Patents
Novel mechanism for automatically eliminating transmission clearance of screw nut pair Download PDFInfo
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- CN215110360U CN215110360U CN202121446610.6U CN202121446610U CN215110360U CN 215110360 U CN215110360 U CN 215110360U CN 202121446610 U CN202121446610 U CN 202121446610U CN 215110360 U CN215110360 U CN 215110360U
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Abstract
The utility model relates to an automatic eliminate novel mechanism in vice transmission clearance of screw-nut, including the lead screw, main nut, vice nut and nut seat, inside at the nut seat is equipped with nut installation through-hole, main nut and vice nut all set up in nut installation through-hole, the lead screw in proper order with main nut and vice nut threaded connection, respectively be equipped with an oblique mouth in the both sides of vice nut, respectively install an oblique contract in the both sides of the inside of nut seat close to vice nut, the top of two oblique contracts is all pushed down the oblique contract through the installation push down spring, the inclined plane of the lower part of two oblique contracts closely laminates with the oblique mouth of the both sides of vice nut. Has the advantages that: the structure is simple, the manufacturing cost is low, the precision is high, the installation and the disassembly are convenient, the screw rod nut pair mechanism can be suitable for eliminating gaps on all screw rod nut pair mechanisms, the precision is improved, and the extremely high precision machining can be achieved with extremely low cost.
Description
Technical Field
The utility model relates to a machine parts machining equipment technical field, in particular to automatic eliminate novel mechanism in screw-nut pair transmission clearance.
Background
The screw-nut pair is an ideal transmission device for interconversion of rotary motion and linear motion, and in the mechanical transmission of the screw-nut pair, the working mode of adjusting the screw rod is mainly to make the screw rod generate axial movement through the relative rotation between the nut and the screw rod, thereby achieving the adjustment of the screw rod. However, in the prior art, because a transmission gap exists between the lead screw and the nut, the lead screw and nut pair is easy to generate axial shake in the transmission process, at present, the mode for solving the axial shake of the lead screw and nut pair is to install a sheet between the main nut and the auxiliary nut through repair to eliminate the gap, and the mode is difficult to adjust and is easy to influence the precision of the mechanism.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned technical problem, provide a simple structure, convenient operation's novel mechanism that can eliminate screw-nut pair transmission clearance automatically.
Technical scheme as follows, an automatic eliminate novel mechanism in vice transmission clearance of screw-nut, including lead screw, main nut, vice nut and nut seat the inside of nut seat is equipped with nut installation through-hole, main nut and vice nut all set up in the nut installation through-hole, the lead screw in proper order with main nut and vice nut threaded connection, its characterized in that the both sides of vice nut respectively are equipped with an oblique mouth the inside of nut seat is close to the both sides of vice nut and respectively installs an oblique contract, two the top of oblique contract all pushes down oblique contract through the installation spring of pushing down, until two the inclined plane of the lower part of oblique contract with the oblique mouth of the both sides of vice nut closely laminates.
As a further improvement, a rectangular through hole is formed in the upper surface of the nut seat, the two inclined wedges are inserted into the nut seat from the rectangular through hole, a partition plate is further arranged between the two inclined wedges, counterbores are formed in the tops of the two inclined wedges, the lower portions of the pressing springs are arranged in the counterbores, a spring cover is arranged on the tops of the two pressing springs in a covering mode, and the spring cover is fixed on the rectangular through hole through two spring mounting screws and is flush with the upper surface of the nut seat.
As a further improvement, the angle of the oblique wedge is 5 °.
As a further improvement, a movable guiding flat key is arranged at the top of the auxiliary nut, a groove is arranged on the nut mounting through hole corresponding to the top of the auxiliary nut, and the movable guiding flat key is inserted into the groove for fixing.
As a further improvement, the main nut is fixed with the nut seat through a plurality of main nut mounting screws.
Advantageous effects
The beneficial effects are that: the structure is simple, the manufacturing cost is low, the precision is high, the installation and the disassembly are convenient, the screw rod nut pair mechanism can be suitable for eliminating gaps on all screw rod nut pair mechanisms, the precision is improved, and the extremely high precision machining can be achieved with extremely low cost.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
FIG. 1 is an exploded view of the present invention;
fig. 2 is a schematic view of the installation structure of the present invention;
FIG. 3 is a cross-sectional view of the C-C portion of FIG. 2
Fig. 4 is an enlarged view of section E-E of fig. 2.
Reference numbers in the figures:
1. screw rod 2, main nut 3 and auxiliary nut
301. Bevel 302, moving guide flat key 4 and nut seat
401. Nut mounting through hole 402, rectangular through hole 403 and groove
5. Oblique wedge 6, down-pressing spring 7, spacing plate
8. Spring cover 9, spring mounting screw 10 and main nut mounting screw
Detailed Description
In order to further understand and appreciate the structural features and advantages of the present invention, preferred embodiments and the accompanying drawings are described in detail as follows:
as shown in figures 1-4, a novel mechanism for automatically eliminating the auxiliary transmission gap of a feed screw nut comprises a feed screw 1, a main nut 2, an auxiliary nut 3 and a nut seat 4, wherein a nut installation through hole 401 is arranged inside the nut seat 4, the main nut 2 and the auxiliary nut 3 are both arranged in the nut installation through hole 401, the feed screw 1 is sequentially connected with the main nut 1 and the auxiliary nut 2 in a threaded manner, two sides of the auxiliary nut 3 are respectively provided with an oblique opening 301, two oblique wedges 5 are respectively arranged inside the nut seat 4 and next to two sides of the auxiliary nut 3, the tops of the two oblique wedges 5 are downwards pushed by installing a pressing spring 6 until the inclined surfaces of the lower parts of the two oblique wedges 5 are tightly attached to the oblique openings 301 at two sides of the auxiliary nut 3, so that the auxiliary nut 3 moves outwards along the axial direction for a certain distance, namely the gap between the feed screw and the main nut 2 and the auxiliary nut 3, the pressed wedge 5 is closely attached to both sides of the sub nut 3, thereby eliminating the gap and improving the machining accuracy.
Specifically, in order to simplify the structure, easy to assemble, convenient dismantlement, upwards set up a rectangle through-hole 402 from the upper surface of nut seat 4, two tapered wedges 5 insert to nut seat 4 from rectangle through-hole 401, and still be equipped with a space bar 7 between two tapered wedges 5, the counter bore has all been seted up at the top of two tapered wedges 5, the lower part setting of push down spring 6 is in the counter bore, top lid at two push down springs 6 is equipped with a spring lid 8, spring lid 8 is fixed on rectangle through-hole 401 through two spring mounting screws 9, and flush with the upper surface of nut seat 4.
Preferably, the angle of the oblique wedge 5 is 5 degrees, and the oblique angle of 5 degrees is easier to adjust, so that the oblique wedge has a self-locking function, and the screw rod and the nut can be always kept to be matched in a gapless state.
Preferably, a movable guiding flat key 302 is arranged at the top of the auxiliary nut 3, a groove 403 is arranged on the nut installation through hole 401 corresponding to the top of the auxiliary nut 3, the movable guiding flat key 302 is inserted into the groove 403 to be fixed, so that the limiting effect is achieved, the auxiliary nut and the nut seat are connected on one axis, and only axial movement can be achieved, and rotation movement cannot be achieved.
Preferably, the main nut 2 is fixed with the nut seat 4 through a plurality of main nut mounting screws 10, and the mounting structure is simple, convenient to mount and convenient to dismount.
The utility model discloses a theory of operation:
the nut seat 4 is directly connected with the workbench, the screw rod 1 is in threaded connection with the main nut 2 and the auxiliary nut 3 in the nut seat 4, the workbench is driven to do corresponding back and forth movement through the nut seat 4 along with the positive rotation and the reverse rotation of the screw rod 1, and a certain gap can exist between the screw rod 1 and the main nut 2 and between the screw rod 1 and the auxiliary nut 3, and the gap can be increased along with the increase of the service life, so the movement precision of the workbench can be influenced finally, therefore, the utility model discloses an inclined wedge 5 is respectively arranged at two sides close to the auxiliary nut 3 in the nut seat 4, the upper part of the inclined wedge 5 always pushes the inclined wedge 5 downwards through the pressing spring 6, the inclined plane at the lower part of the inclined wedge 5 is always attached to the inclined openings at two sides of the auxiliary nut, the auxiliary nut moves outwards along the axial direction for a certain distance, and the distance is also the gap between the screw rod and the main nut 2 and the auxiliary nut 3, therefore, the clearance is eliminated, the screw rod is always matched with the main nut 2 and the auxiliary nut 3 in a gapless state, and the movement of the workbench reaches extremely high precision.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications of the shapes, structures, features and spirit described in the claims of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides an automatic eliminate novel mechanism in vice transmission clearance of screw-nut, includes lead screw, main nut, vice nut and nut seat the inside of nut seat is equipped with nut installation through-hole, main nut and vice nut all set up in the nut installation through-hole, the lead screw in proper order with main nut and vice nut threaded connection, its characterized in that the both sides of vice nut respectively are equipped with an oblique mouth the inside of nut seat is close to the both sides of vice nut and respectively installs an oblique contract, two the top of oblique contract all pushes down the oblique contract through the installation spring of pushing down, until two the inclined plane of the lower part of oblique contract with the oblique mouth of the both sides of vice nut closely laminates.
2. The novel mechanism for automatically eliminating the transmission clearance of the screw-nut pair as claimed in claim 1, wherein a rectangular through hole is formed in the upper surface of the nut seat, two inclined wedges are inserted into the nut seat from the rectangular through hole, a spacing plate is further arranged between the two inclined wedges, counter bores are formed in the top portions of the two inclined wedges, the lower portions of the hold-down springs are arranged in the counter bores, a spring cover is arranged on the top portions of the two hold-down springs, and the spring cover is fixed on the rectangular through hole through two spring mounting screws and is flush with the upper surface of the nut seat.
3. The novel mechanism for automatically eliminating the transmission clearance of the screw-nut pair as claimed in claim 1 or 2, wherein the angle of the oblique wedge is 5 °.
4. The novel mechanism for automatically eliminating the transmission clearance of the screw nut pair as claimed in claim 1, wherein a moving guide flat key is provided on the top of the pair of screw nuts, a groove is provided on the through hole of the screw nut corresponding to the top of the pair of screw nuts, and the moving guide flat key is inserted into the groove for fixing.
5. The novel mechanism for automatically eliminating the transmission clearance of the feed screw nut pair as claimed in claim 1, wherein the main nut is fixed with the nut seat by a plurality of main nut mounting screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121446610.6U CN215110360U (en) | 2021-06-28 | 2021-06-28 | Novel mechanism for automatically eliminating transmission clearance of screw nut pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121446610.6U CN215110360U (en) | 2021-06-28 | 2021-06-28 | Novel mechanism for automatically eliminating transmission clearance of screw nut pair |
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| Publication Number | Publication Date |
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| CN215110360U true CN215110360U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121446610.6U Active CN215110360U (en) | 2021-06-28 | 2021-06-28 | Novel mechanism for automatically eliminating transmission clearance of screw nut pair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989119A (en) * | 2023-07-17 | 2023-11-03 | 广东今科机床有限公司 | Transmission clearance eliminating device suitable for high-precision machining equipment |
-
2021
- 2021-06-28 CN CN202121446610.6U patent/CN215110360U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989119A (en) * | 2023-07-17 | 2023-11-03 | 广东今科机床有限公司 | Transmission clearance eliminating device suitable for high-precision machining equipment |
| CN116989119B (en) * | 2023-07-17 | 2024-02-23 | 广东今科机床有限公司 | Transmission clearance eliminating device suitable for high-precision machining equipment |
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