CN210566086U - Novel structure capable of realizing pre-tightening of double nuts of ball screw - Google Patents
Novel structure capable of realizing pre-tightening of double nuts of ball screw Download PDFInfo
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- CN210566086U CN210566086U CN201921541273.1U CN201921541273U CN210566086U CN 210566086 U CN210566086 U CN 210566086U CN 201921541273 U CN201921541273 U CN 201921541273U CN 210566086 U CN210566086 U CN 210566086U
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Abstract
A novel structure capable of realizing double nut pre-tightening of a ball screw comprises double nuts; the double nuts comprise main nuts, positioning pins, gaskets, pre-tightening keys and auxiliary nuts, and the gaskets comprise second pin holes, key holes and screw holes; a gasket is arranged between the main nut and the auxiliary nut, and the auxiliary nut and the gasket are connected in a relatively rotatable manner; simple to use, through the elasticity of adjustment jackscrew promote the pretension key of both sides drive assist the nut and carry out the adjustment of little angle and then adjust the size of pretightning force, the jackscrew of fastening at last can, need not to carry out the purpose that the pretightning force can be reached in the dismouting to the nut, convenient and fast, labour saving and time saving has thereby reduced the cost to assembly workman's technical requirement reduction, has improved the efficiency of plant use greatly.
Description
The technical field is as follows:
the utility model belongs to the technical field of the ball screw technique and specifically relates to a novel structure that can realize two nut pretensions of ball.
Background art:
the ball screw is the most commonly used transmission element on tool machinery and precision machinery, and 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. Ball screws are widely used in various industrial equipments and precision instruments due to their small frictional resistance.
Ball often adopts two nut formula pre-compaction, need realize the pretension function in two nut structures, and the pretension function implementation mode commonly used at present mainly has two kinds, firstly realizes adjusting the pretightning force size through adjusting the steel ball size, secondly realizes adjusting the pretightning force size through adjusting the gasket thickness. Although the method for adjusting the size of the steel ball is common and commonly used, the pre-tightening force can be adjusted without secondary processing, the double nuts need to be disassembled and assembled, and the steel ball needs to be replaced, which is troublesome; the mode of adjusting gasket thickness can realize the adjustment of better pretightning force to can reach comparatively ideal rigidity and pretightning force size, but still need demolish and still need through calculating the adjustment volume, the cooperation grinding can reach ideal effect many times, waste time energy.
The utility model has the following contents:
for solving the problem, overcome the not enough of prior art, the utility model provides a simple, high-efficient, easy operation, need not the dismouting, effectively reduce the novel structure that can realize two nut pretensions of ball of technical threshold.
In order to achieve the purpose, the utility model provides a novel structure which can realize the pre-tightening of double nuts of a ball screw, comprising the double nuts; the double nuts comprise main nuts, positioning pins, gaskets, pre-tightening keys and auxiliary nuts, and the gaskets comprise second pin holes, key holes and screw holes;
a gasket is arranged between the main nut and the auxiliary nut, and the auxiliary nut and the gasket are connected in a relatively rotating mode.
Furthermore, one end of the main nut is provided with a plurality of first pin holes, and positioning pins penetrate through the first pin holes.
Furthermore, one end of the auxiliary nut is provided with two pre-tightening keys.
Furthermore, a plurality of second pin holes are formed in the gasket, two key holes are formed in two ends of the gasket, and two screw holes are formed in the gasket.
Further, the screw hole intersects with the key hole and is vertically arranged.
Furthermore, the positioning pin penetrates through the second pin hole, the pre-tightening key penetrates through the key hole, the jackscrew penetrates through the screw hole, and the screw hole is meshed with the jackscrew.
Furthermore, the width of the pre-tightening key is slightly smaller than that of the key hole.
Furthermore, the outer diameters of the main nut and the auxiliary nut are the same, and the outer diameter of the gasket is slightly smaller than that of the main nut.
Furthermore, a screw rod penetrates through the interior of the double nut, and a plurality of balls are arranged between the double nut and the screw rod.
The utility model has the advantages that:
the utility model provides a can realize novel structure of ball two nut pretension simple to use, the pretension key that the elasticity through the adjustment jackscrew promoted both sides drives and assists the nut to carry out the adjustment of little angle and then the size of adjustment pretightning force, and the last fastening jackscrew can, need not to carry out the purpose that the dismouting can reach the adjustment pretightning force to the nut, convenient and fast, labour saving and time saving has thereby reduced the cost is reduced to assembly workman's technical requirement, has improved the efficiency of plant use greatly.
Set up 4 jackscrews, fix the pretension key from both sides, prevent that the relative angle of gasket and assistance nut from changing in the later stage use to the location rigidity of main and assistance nut has been increased.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged schematic view of the main nut structure of the present invention;
FIG. 3 is an enlarged schematic view of the auxiliary nut structure of the present invention;
FIG. 4 is an enlarged schematic view of the gasket structure of the present invention;
in the drawings: 1. the bolt comprises a main nut, 2, a positioning pin, 3, a gasket, 4, a jackscrew, 5, a pre-tightening key, 6, an auxiliary nut, 7, a first pin hole, 8, a second pin hole, 9, a key hole, 10 and a screw hole.
The specific implementation mode is as follows:
in order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the attached drawings 1, 2, 3 and 4 of the present invention to perform more detailed description of the present invention.
The utility model provides a novel structure capable of realizing the pre-tightening of double nuts of a ball screw, which comprises the double nuts; the double nuts comprise main nuts 1, positioning pins 2, gaskets 3, pre-tightening keys 5 and auxiliary nuts 6, and the gaskets 3 comprise second pin holes 8, key holes 9 and screw holes 10; a gasket 3 is arranged between the main nut 1 and the auxiliary nut 6, and the auxiliary nut 6 and the gasket 3 are connected in a relatively rotatable manner; one end of the main nut 1 is provided with a plurality of first pin holes 7, and positioning pins 2 penetrate through the first pin holes; one end of the auxiliary nut 6 is provided with two pre-tightening keys 5; the gasket 3 is provided with a plurality of second pin holes 8, two ends of the gasket 3 are provided with two key holes 9, and the gasket 3 is provided with two screw holes 10; the screw hole 10 is intersected with the key hole 9 and is vertically arranged; the positioning pin 2 is arranged in the second pin hole 8 in a penetrating manner, the pre-tightening key 5 is arranged in the key hole 9 in a penetrating manner, the jackscrew 4 is arranged in the screw hole 10 in a penetrating manner, and the screw hole 10 is meshed with the jackscrew 4; the width of the pre-tightening key 5 is slightly smaller than that of the key hole 9; the outer diameters of the main nut 1 and the auxiliary nut 6 are the same, and the outer diameter of the gasket 3 is slightly smaller than that of the main nut 1; the screw rod penetrates through the double nuts, and a plurality of balls are arranged between the double nuts and the screw rod.
The utility model discloses a one of them embodiment as follows:
the utility model provides a can realize novel structure of ball two nut pretensions mainly includes 3 parts, main nut 1 promptly, assists nut 6 and gasket 3.
The external diameter of main nut 1 is the same with supplementary nut 6, and the external diameter of gasket 3 slightly is less than the external diameter of main nut 1, and main nut 1, supplementary nut 6 and gasket 3 constitute two nut structures jointly, and two nut covers are established in the lead screw outside, are provided with a plurality of balls between lead screw and two nuts, and the ball embedding is between the screw thread of lead screw and two nuts.
One end of the main nut 1 is provided with a plurality of first pin holes 7 which are respectively arranged at symmetrical positions at the upper end and the lower end, two positioning pins 2 are generally arranged in the first pin holes 7, and the length and the diameter of each of the 2 positioning pins 2 are completely the same, so that the main nut is convenient to install; the positioning pins 2 can be inserted into different first pin holes 7, and the number of the inserted positioning pins 2 can be changed.
Be provided with a plurality of second pinhole 8 on the gasket 3, the position and the locating pin 2 of general second pinhole 8 are corresponding, and the degree of depth and the aperture of second pinhole 8 and the length and the diameter of locating pin 2 are corresponding, when locating pin 2 inserts second pinhole 8, can realize the fixed mounting effect of location between main nut 1 and the gasket 3.
The positions of the first pin holes 7 and the second pin holes 8 are corresponding to each other, and when the main nut 1 and the gasket 3 are assembled together, the first pin holes 7 and the second pin holes 8 are in one-to-one correspondence.
One end of the auxiliary nut 6 is provided with the pre-tightening keys 5, the number of the general pre-tightening keys 5 is set to be 2, the pre-tightening keys are symmetrically arranged on two sides, and the length and the width of the 2 pre-tightening keys 5 are completely the same, so that the use is convenient.
The gasket 3 is provided with 2 key holes 9, the positions of the key holes 9 correspond to those of the pre-tightening keys 5, and the depth of each key hole 9 is the same as the length of each pre-tightening key 5, so that the pre-tightening keys 5 can be conveniently inserted into the key holes 9; the width of the pre-tightening key 5 is slightly smaller than the width of the keyhole 9, so that the pre-tightening key 5 can be finely adjusted after being inserted into the keyhole 9.
The gasket 3 is provided with 4 screw holes 10, the 4 screw holes 10 are intersected with the key hole 9 and are mutually vertical, the jackscrew 4 is arranged in the screw hole 10, the circumferential surface of the jackscrew 4 is provided with threads, the inner surface of the screw hole 10 is also provided with threads, the jackscrew 4 is mutually meshed with the screw hole 10, the jackscrew 4 can move up and down in the screw hole 10 when the jackscrew 4 rotates, and the jackscrew 4 can push the pre-tightening key 5 to move slightly when the pre-tightening key 5 is inserted into the key hole 9 because the screw hole 10 is intersected with the key hole 9.
After the assembly is completed, the main nut 1 and the gasket 3 are fixed through the splicing of the positioning pin 2 and the second pin hole 8, the auxiliary nut 6 and the gasket 3 are connected through the splicing of the pre-tightening key 5 and the key hole 9, and then the pre-tightening key 5 is clamped and fixed through the screwing of the jackscrew 4 from the upper end and the lower end.
When two nuts are installed on the lead screw, the ball sets up between the screw thread of two nuts and lead screw, when main nut 1 with assist the distance between nut 6 improper, screw thread between two nuts and the lead screw takes place to deviate, just can lead to the friction between ball and the screw thread serious, it is smooth and easy to lead to the sideslip portion of two nuts on the lead screw, relative angle between nut 6 and gasket 3 can be finely tuned this moment, the screw thread relative angle of the gasket 3 that makes supplementary nut 6 changes, the relative angle of supplementary nut 6 and lead screw also takes place the fine setting this moment, make the screw thread between two nuts and the lead screw correspond completely, the space that gives the ball also grow, thereby reduce the frictional force that the ball received.
In actual use, after the double nuts are assembled, according to the angle relation between the main nut 1, the auxiliary nut 6 and the screw rod, a proper jackscrew 4 is selected for fine adjustment, the fine adjustment process is firstly screwed into the jackscrew 4, the pre-tightening key 5 is pushed to move, the auxiliary nut 6 is never rotated to adjust the relative angle between the auxiliary nut 6 and the screw rod, when the adjustment is carried out to a proper position, namely, the threads between the double nuts and the screw rod completely correspond, the other jackscrew 4 is screwed into the other jackscrew 4 from the reverse direction, the pre-tightening key 5 is fixed to the position through the jackscrews 4 at the upper end and the lower end, the other two jackscrews 4 are also screwed to completely fix the auxiliary nut 6, and the pre-tightening work is completed at the moment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A novel structure capable of realizing double nut pre-tightening of a ball screw comprises double nuts; the method is characterized in that: the double nuts comprise main nuts (1), positioning pins (2), gaskets (3), pre-tightening keys (5) and auxiliary nuts (6), and the gaskets (3) comprise second pin holes (8), key holes (9) and screw holes (10);
a gasket (3) is arranged between the main nut (1) and the auxiliary nut (6), and the auxiliary nut (6) and the gasket (3) are connected in a relatively rotatable mode.
2. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: one end of the main nut (1) is provided with a plurality of first pin holes (7), and positioning pins (2) penetrate through the first pin holes.
3. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: and one end of the auxiliary nut (6) is provided with two pre-tightening keys (5).
4. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: the gasket (3) is provided with a plurality of second pin holes (8), two ends of the gasket (3) are provided with two key holes (9), and the gasket (3) is provided with two screw holes (10).
5. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: the thread hole (10) is intersected with the key hole (9) and is vertically arranged.
6. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: the positioning pin (2) penetrates through the second pin hole (8), the pre-tightening key (5) penetrates through the key hole (9), the jackscrew (4) penetrates through the screw hole (10), and the screw hole (10) is meshed with the jackscrew (4).
7. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 6 is characterized in that: the width of the pre-tightening key (5) is slightly smaller than that of the key hole (9).
8. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: the outer diameters of the main nut (1) and the auxiliary nut (6) are the same, and the outer diameter of the gasket (3) is slightly smaller than that of the main nut (1).
9. The novel structure capable of realizing double nut pre-tightening of the ball screw according to claim 1 is characterized in that: a screw rod penetrates through the interior of the double nut, and a plurality of balls are arranged between the double nut and the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541273.1U CN210566086U (en) | 2019-09-17 | 2019-09-17 | Novel structure capable of realizing pre-tightening of double nuts of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541273.1U CN210566086U (en) | 2019-09-17 | 2019-09-17 | Novel structure capable of realizing pre-tightening of double nuts of ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566086U true CN210566086U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921541273.1U Active CN210566086U (en) | 2019-09-17 | 2019-09-17 | Novel structure capable of realizing pre-tightening of double nuts of ball screw |
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| CN (1) | CN210566086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685522A (en) * | 2021-09-01 | 2021-11-23 | 西安超精刀具设备有限公司 | Thickness-adjustable flexible gasket applied to double-nut structure screw rod |
| CN117028511A (en) * | 2023-10-09 | 2023-11-10 | 江苏高晟机械有限公司 | Nut screw pair |
-
2019
- 2019-09-17 CN CN201921541273.1U patent/CN210566086U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685522A (en) * | 2021-09-01 | 2021-11-23 | 西安超精刀具设备有限公司 | Thickness-adjustable flexible gasket applied to double-nut structure screw rod |
| CN117028511A (en) * | 2023-10-09 | 2023-11-10 | 江苏高晟机械有限公司 | Nut screw pair |
| CN117028511B (en) * | 2023-10-09 | 2023-12-15 | 江苏高晟机械有限公司 | Nut screw pair |
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