CN218408381U - Ball screw structure - Google Patents
Ball screw structure Download PDFInfo
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- CN218408381U CN218408381U CN202222868686.9U CN202222868686U CN218408381U CN 218408381 U CN218408381 U CN 218408381U CN 202222868686 U CN202222868686 U CN 202222868686U CN 218408381 U CN218408381 U CN 218408381U
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- ball
- nut
- spiral groove
- hole
- lead screw
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Abstract
The utility model relates to a ball screw structure, including lead screw, nut stop collar and ball, the lead screw surface is provided with spiral groove, the nut cover is put on the lead screw, and the nut corresponds spiral groove position and opens and has the through-hole, the nut stop collar is put on the nut, in the through-hole was arranged in with the roll mode to the ball, ball one end was supported and is leaned on in spiral groove, and the ball other end is supported and is leaned on nut stop collar inner wall, when the lead screw was rotatory, the ball rotation just removed along spiral groove direction to the length direction along the lead screw slides along the drive nut. The ball rotation reduces the frictional force between nut and the lead screw, improves transmission efficiency, and nut and lead screw installation are simple, and simple operation also can be restoreed after dismantling, and is small simultaneously, improves ball screw's application scope and practicality greatly.
Description
Technical Field
The utility model relates to a ball screw structure.
Background
The ball screw is an ideal product for converting rotary motion into linear motion or converting linear motion into rotary motion. The ball screw is the most commonly used transmission element on tool machinery and precision machinery, has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency.
The existing ball screw is generally manufactured in a ball circulation type and ball non-circulation dislocation type mode, the manufacturing process is complex, the working noise is high, the dismounting is troublesome, the nut size is large, and the ball screw is not suitable for being applied to the working condition of light and small load.
In addition, in the ball circulation type ball screw, after the nut runs out of the screw, the ball falls off, and the ball is basically difficult to restore in a simple mode, so that the ball circulation type ball screw is high in installation difficulty and troublesome in disassembly and assembly.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ball screw structure small, the installation is convenient, it is convenient to maintain and the noise is little.
The purpose of the utility model is realized like this:
the utility model provides a ball screw structure, includes lead screw, nut stop collar and ball, the lead screw surface is provided with spiral groove, the nut cover is put on the lead screw, and the nut corresponds spiral groove position and opens there is the through-hole, the nut stop collar cover is put on the nut, the ball is arranged in the through-hole with the roll mode, and ball one end supports and leans on in spiral groove, and the ball other end supports and leans on at nut stop collar inner wall, when the lead screw is rotatory, the ball rotation just removes along the spiral groove direction to it slides along the length direction of lead screw to drive the nut.
The ball is limited in the through hole of the nut, one end of the ball is supported on the spiral groove, the other end of the ball is supported on the inner wall of the nut limiting sleeve, when the screw rod rotates, the ball moves along the spiral groove, the nut is driven to slide along the length direction of the screw rod, the ball is limited in the through hole, the ball is not circulating, adjacent balls do not need to be contacted in the front and back, friction is reduced, noise is reduced, transmission efficiency is improved, the ball is limited in the through hole of the nut, the ball is prevented from falling off and misplacing, friction between the nut and the screw rod is reduced through rotation of the ball, transmission efficiency is improved, the nut and the screw rod are simple to install, simple operation can be repaired after disassembly, meanwhile, the size is small, and the application range and the practicability of the ball screw rod are greatly improved.
The purpose of the utility model can also adopt the following technical measures to solve:
furthermore, the through holes are formed in two opposite side walls of the inner cavity of the nut.
Furthermore, an annular sliding groove is formed in the inner wall of the nut limiting sleeve corresponding to the ball, one end of the ball abuts against the inside of the annular sliding groove, and the other end of the ball abuts against the inside of the spiral groove. The ball is arranged in the through hole, one end of the ball is abutted against the annular chute, the other end of the ball is abutted against the spiral groove, the radial movement of the ball is limited, and the transmission precision and the transmission efficiency of the ball screw are improved.
Further, the spiral groove comprises a first spiral groove and a second spiral groove, the first spiral groove and the second spiral groove are the same in size, and the first spiral groove and the second spiral groove are arranged in parallel.
Furthermore, a first through hole is formed in the right side wall of the inner cavity of the nut, a second through hole is formed in the left side wall of the inner cavity of the nut, the ball is arranged in the first through hole in a rolling mode, one end of the ball abuts against the first spiral groove, the other end of the ball abuts against the inner wall of the nut limiting sleeve, the ball is arranged in the second through hole in a rolling mode, one end of the ball abuts against the second spiral groove, the other end of the ball abuts against the inner wall of the nut limiting sleeve, and the first through hole and the second through hole are located on the same straight line.
The utility model discloses a nut drilling machine, including screw rod, first spiral groove, second spiral groove, the ball of nut one side supports and leans on in first spiral groove, the ball of nut opposite side supports and leans on in the second spiral groove, cause the ball to be in on the same straight line, therefore during nut drilling, drilling equipment once only drills out first through-hole and second through-hole, and first through-hole and second through-hole department are in on the same straight line, the drilling degree of difficulty reduces, improve the drilling precision, it is more accurate to make first through-hole and second through-hole position, the axiality is better, the precision of ball interval is improved in the technology, the nut slides more smoothly.
Furthermore, an annular sliding groove is formed in the inner wall of the nut limiting sleeve corresponding to the ball, and the ball abuts against the inside of the annular sliding groove.
The utility model has the advantages as follows:
the utility model discloses, the ball is injectd in the through-hole of nut, ball one end is supported and is leaned on spiral groove, the ball other end is supported and is leaned on the nut stop collar inner wall, when the lead screw is rotatory, the ball removes along spiral groove, thereby it slides along the length direction of lead screw to drive the nut, the ball is injectd in the through-hole, the ball is not circulating, adjacent ball does not need the front and back contact, the friction reduces, the noise reduces, the transmission efficiency is improved, and the ball is injectd in the nut through-hole, avoid the ball to fall, the dislocation, the ball rotation reduces the frictional force between nut and the lead screw, the transmission efficiency is improved, nut and lead screw installation are simple, simple operation also can be restoreed after the dismantlement, and is small simultaneously, the application scope and the practicality of ball screw are greatly improved.
The utility model discloses, the ball is arranged in the through-hole and ball one end is supported and is leaned on at annular spout, and the ball other end supports and leans on in the helical groove, and restriction ball radial movement improves ball screw transmission precision and transmission efficiency.
The utility model discloses, the lead screw surface is provided with first spiral groove and second spiral groove and forms two helical structure, the ball of nut one side supports and leans on in first spiral groove, the ball of nut opposite side supports and leans on in the second spiral groove, cause the ball to be in on the same straight line, therefore during nut drilling, drilling equipment once only drills out first through-hole and second through-hole, and first through-hole and second through-hole department are in on the same straight line, the drilling degree of difficulty reduces, improve the drilling precision, it is more accurate to make first through-hole and second through-hole position, the axiality is better, the precision of ball interval is improved on the technology, the nut slides more smoothly in the same direction as ready.
Drawings
Fig. 1 is a schematic view of a ball screw.
Fig. 2 is a front view of the ball screw.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.
Fig. 4 is a sectional view B-B of fig. 2.
Fig. 5 is another angular schematic view of the ball screw.
Fig. 6 is an assembly view of the ball screw.
Fig. 7 is an assembly view of the nut and nut stop collar.
Fig. 8 is an assembly view of the nut, ball and nut stop collar.
Fig. 9 is a schematic view of balls respectively abutting against a first screw groove and a second screw groove of a screw.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
embodiment, as shown in fig. 1 to 9, a ball screw structure includes a screw 1, a nut 2, a nut retainer 3 and balls 4, wherein a spiral groove 5 is formed on an outer surface of the screw 1, the spiral groove 5 includes a first spiral groove 51 and a second spiral groove 52, the first spiral groove 51 and the second spiral groove 52 have the same size, and the first spiral groove 51 and the second spiral groove 52 are arranged side by side.
The right side wall of the inner cavity of the nut 2 is provided with a first through hole 21, the left side wall of the inner cavity of the nut 2 is provided with a second through hole 22, the first through hole 21 and the second through hole 22 are positioned on the same straight line, and the inner wall of the nut limiting sleeve 3 is provided with an annular sliding groove 31.
The nut 2 is sleeved on the screw rod 1, and the nut limiting sleeve 3 is sleeved on the nut 2.
The ball 4 is placed in the first through hole 21 in a rolling manner, one end of the ball 4 abuts against the first spiral groove 51, and the other end of the ball 4 abuts against the annular chute 31.
The ball 4 is placed in the second through hole 22 in a rolling manner, one end of the ball 4 abuts against the second spiral groove 52, and the other end of the ball 4 abuts against the annular chute 31.
The working principle is as follows:
when the screw rod 1 rotates, the balls 4 rotate and move along the first spiral groove 51 and the second spiral groove 52 respectively, so that the nut 2 is driven to slide along the length direction of the screw rod 1.
Because the ball 4 is limited in the first through hole 21/the second through hole 22 of the nut 2, and the ball 4 is respectively supported in the annular sliding groove 31 of the nut stop collar 3 and the first spiral groove 51/the second spiral groove 52 of the screw rod 1, the ball 4 can not be deflected, the rotation process of the ball 4 reduces the friction force between the nut 2 and the screw rod 1, the nut 2 can slide more smoothly, and the volume of the ball 4 and the screw rod 1 is smaller due to the structural mode.
If nut 2 and lead screw 1 after the separation, the user can be from the line with ball 4 repacking back to the through-hole, then put nut 2 cover again on lead screw 1, through this kind of simple mode recovery ball 4 lead screw 1, the installation is simple, restores simply.
Furthermore, because the outer surface of the screw rod 1 is provided with the double-spiral structure formed by combining the first spiral groove 51 and the second spiral groove 52, the first through hole 21 and the second through hole 22 of the nut 2 do not need to be staggered, so that the first through hole 21 and the second through hole 22 can be drilled in one step in the drilling process, the drilling precision is greatly improved, the positions of the first through hole 21 and the second through hole 22 are more accurate, the coaxiality is better, the precision of the distance between the balls 4 is improved in the process, and the nut 2 can slide more smoothly.
Claims (6)
1. The utility model provides a ball screw structure, includes lead screw, nut stop collar and ball, its characterized in that: the outer surface of the screw rod is provided with a spiral groove, the nut is sleeved on the screw rod, a through hole is formed in the position, corresponding to the spiral groove, of the nut, the nut limiting sleeve is sleeved on the nut, the ball is arranged in the through hole in a rolling mode, one end of the ball is abutted to the spiral groove, the other end of the ball is abutted to the inner wall of the nut limiting sleeve, and when the screw rod rotates, the ball rotates and moves along the direction of the spiral groove, so that the nut is driven to slide along the length direction of the screw rod.
2. The ball screw structure according to claim 1, wherein: the through holes are formed in two opposite side walls of the inner cavity of the nut.
3. The ball screw structure according to claim 1, wherein: an annular sliding groove is formed in the inner wall of the nut limiting sleeve corresponding to the ball, one end of the ball is abutted to the annular sliding groove, and the other end of the ball is abutted to the spiral groove.
4. The ball screw structure according to claim 1, wherein: the spiral grooves comprise a first spiral groove and a second spiral groove, the first spiral groove and the second spiral groove are the same in size, and the first spiral groove and the second spiral groove are arranged in parallel.
5. The ball screw structure according to claim 4, wherein: the right side wall of the inner cavity of the nut is provided with a first through hole, the left side wall of the inner cavity of the nut is provided with a second through hole, the ball is arranged in the first through hole in a rolling mode, one end of the ball is abutted against the first spiral groove, the other end of the ball is abutted against the inner wall of the nut limiting sleeve, the ball is arranged in the second through hole in a rolling mode, one end of the ball is abutted against the second spiral groove, the other end of the ball is abutted against the inner wall of the nut limiting sleeve, and the first through hole and the second through hole are positioned on the same straight line.
6. The ball screw structure according to claim 4 or 5, wherein: the inner wall of the nut limiting sleeve is provided with an annular sliding groove corresponding to the ball, and the ball is abutted to the annular sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222868686.9U CN218408381U (en) | 2022-10-27 | 2022-10-27 | Ball screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222868686.9U CN218408381U (en) | 2022-10-27 | 2022-10-27 | Ball screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218408381U true CN218408381U (en) | 2023-01-31 |
Family
ID=85004556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222868686.9U Active CN218408381U (en) | 2022-10-27 | 2022-10-27 | Ball screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218408381U (en) |
-
2022
- 2022-10-27 CN CN202222868686.9U patent/CN218408381U/en active Active
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