CN211315020U - Adjustable gap-eliminating nut - Google Patents
Adjustable gap-eliminating nut Download PDFInfo
- Publication number
- CN211315020U CN211315020U CN201921391323.2U CN201921391323U CN211315020U CN 211315020 U CN211315020 U CN 211315020U CN 201921391323 U CN201921391323 U CN 201921391323U CN 211315020 U CN211315020 U CN 211315020U
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- nut body
- nut
- screw
- backlash
- flange seat
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Abstract
The adjustable anti-backlash nut is characterized in that threaded holes are formed in two sides of one end face, far away from the flange seat, of the first nut body, arc-shaped grooves penetrating through the second nut body are formed in two sides of the end face of the second nut body, the screw penetrates through the arc-shaped grooves and is screwed into the threaded holes to combine the first nut body and the second nut body together, when the adjustable anti-backlash nut and a screw rod shaft are worn, the second nut body is screwed to eliminate a gap, and the first nut body and the second nut body are fixed through the screw to achieve the purpose of anti-backlash.
Description
Technical Field
The utility model relates to a nut especially relates to an adjustable crack nut that disappears.
Background
The trapezoidal screw is mainly used in a transmission and position adjusting device, compared with a ball screw, the trapezoidal screw has the advantages of low cost, large bearing capacity, compact and simple structure, capability of self-locking and the like although the trapezoidal screw has the defects of large friction force, low transmission efficiency, high relative abrasion and the like, and is widely applied to various industrial equipment such as common machine tools, elevators and the like.
The main factor influencing the transmission precision of the trapezoidal screw pair is the clearance between the nut and the screw, if the clearance can be eliminated, the trapezoidal screw pair can obtain the transmission precision almost comparable to that of a ball screw, the clearance eliminating nut exists based on the application, and the nut and the screw are in zero clearance fit through the special framework design, so that high-precision transmission is realized. Because of compact and simple structure and relatively low cost, the device is widely applied to occasions with low load and high precision requirements, such as printing, scanning and three-dimensional measurement systems.
In the screw rod pair structure in the prior art, a movement gap is easily generated due to abrasion of a screw rod and in the movement process, the movement gap can increase the linear movement positioning error and repeated positioning, and the problems of high noise, low movement precision and the like are caused. The prior art also has a method for solving the gap problem, but still has the problems of troublesome replacement of spare parts and high production cost.
SUMMERY OF THE UTILITY MODEL
For solving the problem in the prior art, the utility model provides a following technical scheme: the utility model provides an adjustable gap nut that disappears, includes flange seat, first nut body, second nut body and screw, the flange seat with this body coupling of first nut, its characterized in that, the first nut body is kept away from the both sides of the terminal surface of flange seat direction are equipped with the screw hole, second nut body terminal surface both sides are equipped with and run through the arc wall of second nut body, the screw passes the arc wall screw in the screw hole will first nut body and second nut body combine together.
Further, the sizes of the threaded holes in the first nut body and the second nut body are consistent.
Further, the arc-shaped groove width is the same as the screw diameter.
Further, the first nut body and the second nut body are made of bronze.
Further, the first nut body and the second nut body are integrally plated with nickel through alloy element catalysis or coated with a dried Teflon ETFE or molybdenum disulfide solid scratch-resistant wear-resistant coating.
The beneficial effects of the utility model reside in that: when the adjustable anti-backlash nut is abraded with a screw shaft, a second nut body is used for screwing to eliminate a clearance, and then the first nut body and the second nut body are fixed through screws to achieve the purpose of anti-backlash.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the structure of the flange seat and the first nut body of the present invention;
fig. 3 is a schematic structural view of a second nut of the present invention;
Detailed Description
The utility model is further explained with reference to the accompanying drawings, and an adjustable anti-backlash nut comprises a flange seat 1, a first nut body 2, a second nut body 3 and a screw, wherein the flange seat 1 is connected with the first nut body 2, and is characterized in that two sides of one end surface of the first nut body 2 away from the flange seat 1 direction are provided with threaded holes 21, two sides of the end surface of the second nut body 3 are provided with arc-shaped grooves 31 penetrating through the second nut body 3, and the screw passes through the arc-shaped grooves 31 and is screwed into the threaded holes 21 to combine the first nut body 2 and the second nut body 3 together; the sizes of the threaded holes 21 in the first nut body 2 and the second nut body 3 are consistent; the width of the arc-shaped groove 31 is the same as the diameter of the screw; the first nut body 2 and the second nut body 3 are made of bronze materials, and the bronze materials can prevent the nuts from being damaged by heat generated by ambient temperature and friction; the first nut body 2 and the second nut body 3 are integrally nickel-plated through alloy element catalysis or coated with a dried Teflon ETFE or molybdenum disulfide solid scratch-resistant wear-resistant coating, so that the service life of the matching of the screw rod and the nut body is prolonged, and the movement resistance torque of the screw rod and the nut is smaller.
In specific implementation, the first nut body 2 and the second nut body 3 are screwed on a screw shaft, so that the first nut body 2 and the second nut body 3 are in contact, the screw passes through the arc-shaped groove 31 and is screwed into the threaded hole 21, when the screw is used for a long time, the screw is loosened, the second nut body 3 is continuously adjusted, and the screw is screwed, so that the first nut body 2 and the second nut body 3 are in close contact, and the nut is more stable in the high-speed rotation process of the screw.
Claims (5)
1. The utility model provides an adjustable gap nut that disappears, includes flange seat, first nut body, second nut body and screw, the flange seat with this body coupling of first nut, its characterized in that, the first nut body is kept away from the both sides of the terminal surface of flange seat direction are equipped with the screw hole, second nut body terminal surface both sides are equipped with and run through the arc wall of second nut body, the screw passes the arc wall screw in the screw hole will first nut body and second nut body combine together.
2. The adjustable anti-backlash nut of claim 1, wherein the threaded bores in the first nut body and the second nut body are of the same size.
3. The adjustable anti-backlash nut of claim 1, wherein said arcuate slot has a width equal to a diameter of said screw.
4. The adjustable anti-backlash nut as claimed in claim 1, wherein said first nut body and said second nut body are made of bronze.
5. The adjustable anti-backlash nut as claimed in claim 1, wherein the first nut body and the second nut body are integrally nickel-plated with alloy elements or coated with a dried teflon ETFE or molybdenum disulfide solid scratch-resistant wear-resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391323.2U CN211315020U (en) | 2019-08-26 | 2019-08-26 | Adjustable gap-eliminating nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391323.2U CN211315020U (en) | 2019-08-26 | 2019-08-26 | Adjustable gap-eliminating nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211315020U true CN211315020U (en) | 2020-08-21 |
Family
ID=72053504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921391323.2U Active CN211315020U (en) | 2019-08-26 | 2019-08-26 | Adjustable gap-eliminating nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211315020U (en) |
-
2019
- 2019-08-26 CN CN201921391323.2U patent/CN211315020U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |