Height adjusting device for closing-up of self-locking nut
By using the locking sleeve and the anti-rotation mechanism during the self-locking nut closing process, the rapid and stable adjustment of the self-locking nut height is achieved, and the problems of cumbersome adjustment and poor consistency in the prior art are solved, and the processing quality is improved.
Patent Information
- Application Number
- CN202422229133.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-11
AI Technical Summary
During the closing process of existing self-locking nuts, the indentation height adjustment is complicated and difficult to control, resulting in poor product quality consistency and frequent replacement of the pads, which poses a risk of wear and shedding.
A height adjustment device including a base, a locking sleeve, an adjustment bolt and a spring is designed. The anti-rotation mechanism ensures that the adjustment bolt does not rotate after adjustment is adjusted. The anti-rotation structure of the locking sleeve is used to achieve height locking.
The height adjustment process of the self-locking nut is simplified, the adjustment efficiency is improved, the consistency of the closing position is ensured, the height changes are avoided, and the self-locking nut closing processing quality requirements are met.
Smart Images
Figure CN223070329U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a height adjusting device for closing the mouth of a self-locking nut, belonging to the technical field of self-locking nut mouth closing. Background Art
[0002] During the processing of self-locking nut products, it is necessary to close the mouth. Currently, on a machine tool, a closing block is used to close the mouth of the self-locking nut. Specifically, the self-locking nut is placed on a base, and the mouth-closing position of the self-locking nut is between the closing blocks. The closing blocks clamp and squeeze the self-locking nut under the action of a corresponding driving mechanism to close its mouth.
[0003] If the mouth-closing position of the self-locking nut is different, it is necessary to appropriately adjust the placement height of the self-locking nut according to requirements, so that the indentation height of the self-locking nut can meet the requirements. The existing adjustment process of the indentation height of the self-locking nut is to remove the self-locking nut product, then place a spacer on the base, and then place the self-locking nut on the spacer. Different indentation heights require different thickness spacers. The self-locking nut is frequently taken out for adjustment and then placed on the spacer. During the processing, the spacer will also be worn, and the thickness of the worn spacer will change. The adjustment process is cumbersome and difficult to control. The number of spacers required is large, and different specifications cannot be shared, and special management is also required. During the processing, the spacer on the base may also fall off, which is likely to cause poor consistency in the mouth-closing quality of the product and cannot meet the final requirements of the self-locking nut. Summary of the Invention
[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a height adjusting device for closing the mouth of a self-locking nut.
[0005] The technical solution for the utility model to solve the above technical problems is as follows: A height adjusting device for closing the mouth of a self-locking nut includes a base, a locking sleeve, an adjusting bolt, and a spring. The locking sleeve is slidably arranged on the base up and down. The adjusting bolt includes a bolt head and a screw rod. The top surface of the bolt head is used to support the self-locking nut. The rod end of the screw rod passes through the locking sleeve and is threadedly connected to the base. The spring is sleeved outside the screw rod and is located between the locking sleeve and the base. It also includes an anti-rotation mechanism. The anti-rotation mechanism includes a sleeve anti-rotation structure arranged on the locking sleeve and a bolt anti-rotation structure arranged on the adjusting bolt. When adjusting, the locking sleeve moves against the elastic force of the spring, the sleeve anti-rotation structure is disengaged from the bolt anti-rotation structure, and the adjusting bolt is rotated for height adjustment. After the adjustment is in place, the locking sleeve resets, and the sleeve anti-rotation structure and the bolt anti-rotation structure interact to prevent the adjusting bolt from rotating.
[0006] The beneficial effects of the present utility model are as follows: The locking sleeve is arranged to slide up and down on the base. After the adjusting bolt is adjusted in place, the locking sleeve can act on the adjusting bolt through the anti-rotation mechanism under the action of the spring to prevent the adjusted adjusting bolt from rotating. When it is necessary to adjust the closing position of the self-locking nut, a force is applied to the locking sleeve. The locking sleeve moves downward against the elastic force of the spring, and the anti-rotation mechanism between the locking sleeve and the adjusting bolt disengages. The adjusting bolt can be rotated to adjust its height. After the adjustment is in place, the locking sleeve is released. The locking sleeve is reset under the elastic force of the spring and cooperates with the adjusting bolt through the anti-rotation mechanism to lock and prevent the adjusting bolt from rotating. The structure of the present utility model is simple, the adjustment process is convenient and fast, it can be adjusted according to the closing position of the self-locking nut, and the determined closing indentation height can be locked after the adjustment is in place, avoiding changes in height during the closing process, greatly improving the adjustment efficiency of the closing position of the self-locking nut, and meeting the requirements for the consistency of the processing quality of the self-locking nut closing.
[0007] On the basis of the above technical solution, the present utility model can also be improved as follows.
[0008] Further, the anti-rotation mechanism is arranged between the upper part of the locking sleeve and the bolt head of the adjusting bolt.
[0009] The beneficial effect of adopting the above further solution is that the anti-rotation mechanism is located at the upper position between the bolt head and the locking sleeve, meeting the anti-rotation cooperation between the bolt head and the inner wall of the locking sleeve during locking. At the same time, during adjustment, only a downward force needs to be applied to the locking sleeve. When the locking sleeve moves downward, the anti-rotation mechanism can be disengaged, without interfering with the rotation of the adjusting bolt.
[0010] Further, the anti-rotation mechanism includes an anti-rotation internal tooth and an anti-rotation external tooth that engages with the anti-rotation internal tooth. The anti-rotation internal tooth is arranged on the inner wall of the locking sleeve, and the anti-rotation external tooth is arranged on the outer surface of the bolt head of the adjusting bolt.
[0011] The beneficial effect of adopting the above further solution is that the adjusted adjusting bolt can be locked by the engagement between the anti-rotation internal tooth and the anti-rotation external tooth, avoiding the rotation of the adjusting bolt, ensuring the height of the adjusted adjusting bolt, and thus meeting the requirements for the consistency of the closing position of the self-locking nut placed on the adjusting bolt.
[0012] Further, an inner ring platform is provided on the locking sleeve, and the upper end of the spring acts on the inner ring platform.
[0013] The beneficial effect of adopting the above further solution is that the upper end of the spring elastically supports the locking sleeve by acting on the inner ring platform; a hole for the screw rod to pass through is reserved in the inner ring platform, which will not interfere with the connection between the adjusting bolt and the base.
[0014] Further, an inner sleeve is also connected to the inner side of the inner ring platform, and a through hole for the screw rod to pass through is provided in the inner sleeve.
[0015] The beneficial effect of adopting the above further solution is that the inner sleeve is sleeved outside the screw rod, which has a supporting and guiding effect on the screw rod. The spring is arranged outside the inner sleeve, and the inner sleeve can also position the upper end of the spring.
[0016] Further, at least two guide rods are provided on the base, and guide holes adapted to the guide rods are provided on the locking sleeve.
[0017] The beneficial effect of adopting the above further solution is that the locking sleeve can slide along the axial direction of the guide rod. When it is necessary to adjust the height of the adjusting bolt, a force can be applied to the locking sleeve to overcome the elastic force of the spring. The locking sleeve slides downward along the guide rod, and the anti-rotation internal teeth and the anti-rotation external teeth are disengaged. Then rotate the adjusting bolt to adjust its height. After the adjustment is in place, release the locking sleeve, and the locking sleeve will slide upward along the guide rod under the action of the elastic force of the spring, and the anti-rotation internal teeth and the anti-rotation external teeth are engaged to achieve the purpose of locking and anti-rotation.
[0018] Further, there are four guide rods, and correspondingly four guide holes are provided. The four guide holes are evenly distributed in the circumferential direction of the locking sleeve.
[0019] The beneficial effect of adopting the above further solution is that the four guide rods are evenly distributed, and the locking sleeve slides up and down relative to the base stably and reliably without rotation.
[0020] Further, the bolt head includes an anti-rotation portion for installing the anti-rotation external teeth and a supporting portion provided at the top of the anti-rotation portion. The outer diameter of the supporting portion is larger than the outer diameter of the anti-rotation portion.
[0021] The beneficial effect of adopting the above further solution is that a shoulder can be formed between the supporting portion and the anti-rotation portion, and this shoulder can limit the lower limit position of the adjusting bolt.
[0022] Further, a threaded hole for threadedly connecting with the screw rod of the adjusting bolt is provided on the base.
[0023] The beneficial effect of adopting the above further solution is that the screw rod of the adjusting bolt can be threadedly connected to the base through the threaded hole. By rotating the adjusting bolt, the supporting height of the self-locking nut can be adjusted. After the adjustment height is appropriate, under the action of the elastic force of the spring, the locking sleeve moves upward and its anti-rotation internal teeth are combined with the anti-rotation external teeth on the adjusting bolt. The locking sleeve is arranged on the base through the guide post and cannot rotate. By the locking sleeve, it can be ensured that the adjusting bolt cannot rotate, so as to maintain the height uniformity and meet the requirement of the consistency of the closing position of the self-locking nut.
[0024] Further, a positioning sleeve is provided on the base, and the positioning sleeve is sleeved outside the screw rod.
[0025] The beneficial effect of adopting the above further solution is that the rod end of the screw rod can pass through the positioning sleeve and be threadedly connected to the threaded hole, and the spring is sleeved outside the positioning sleeve, which can play a positioning role in the lower end of the spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a schematic structural diagram of the present invention;
[0027] Figure 2 is a schematic sectional structural diagram of the present invention;
[0028] Figure 3 is a schematic three-dimensional structural diagram of the present invention;
[0029] Figure 4 is a schematic structural diagram of the present invention in the use state;
[0030] In the figure, 1. Base; 11. Threaded hole; 12. Guide rod; 13. Positioning sleeve; 2. Locking sleeve; 21. Anti-rotation internal teeth; 22. Guide hole; 23. Inner ring platform; 24. Inner sleeve; 3. Adjusting bolt; 31. Screw rod; 32. Anti-rotation part; 33. Support part; 34. Anti-rotation external teeth; 4. Spring; 5. Self-locking nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] The principles and features of the present invention will be described below in conjunction with examples. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.
[0032] As Figures 1-4 shown, a height adjusting device for self-locking nut 5 necking includes a base 1, a locking sleeve 2, an adjusting bolt 3 and a spring 4. The locking sleeve 2 is slidably arranged on the base 1. The adjusting bolt 3 includes a bolt head and a screw rod 31. The top surface of the bolt head is used to support the self-locking nut 5. The rod end of the screw rod 31 passes through the locking sleeve 2 and is threadedly connected to the base 1. The spring 4 is sleeved outside the screw rod 31 and is located between the locking sleeve 2 and the base 1. It further includes an anti-rotation mechanism. The anti-rotation mechanism includes a sleeve anti-rotation structure provided on the locking sleeve 2 and a bolt anti-rotation structure provided on the adjusting bolt 3. During adjustment, the locking sleeve 2 moves against the elastic force of the spring 4, the sleeve anti-rotation structure is disengaged from the bolt anti-rotation structure, and the adjusting bolt 3 is rotated for height adjustment. After the adjustment is in place, the locking sleeve 2 resets, and the sleeve anti-rotation structure and the bolt anti-rotation structure interact to prevent the adjusting bolt 3 from rotating.
[0033] The anti-rotation mechanism is arranged between the upper part of the locking sleeve 2 and the bolt head of the adjusting bolt 3. The anti-rotation mechanism is located at the upper positions of the bolt head and the locking sleeve 2, satisfying the anti-rotation fit between the bolt head and the inner wall of the locking sleeve 2 during locking. At the same time, during adjustment, only a downward force needs to be applied to the locking sleeve 2. When the locking sleeve 2 moves downward, the anti-rotation mechanism can be disengaged, without interfering with the rotation of the adjusting bolt 3.
[0034] The anti-rotation mechanism includes an anti-rotation internal tooth 21 and an anti-rotation external tooth 34 that meshes with the anti-rotation internal tooth 21. The anti-rotation internal tooth 21 is arranged on the inner wall of the locking sleeve 2, and the anti-rotation external tooth 34 is arranged on the outer surface of the bolt head of the adjusting bolt 3. Through the meshing between the anti-rotation internal tooth 21 and the anti-rotation external tooth 34, the adjusted adjusting bolt 3 can be locked to prevent the adjusting bolt 3 from rotating, ensuring the height of the adjusted adjusting bolt 3, so as to meet the requirement of the consistency of the closing position of the self-locking nut 5 placed on the adjusting bolt 3.
[0035] An inner ring platform 23 is provided on the locking sleeve 2, and the upper end of the spring 4 acts on the inner ring platform 23. The upper end of the spring 4 reaches the purpose of elastically supporting the locking sleeve 2 by acting on the inner ring platform 23; a hole for the screw rod 31 to pass through is reserved in the inner ring platform 23, which will not interfere with the connection between the adjusting bolt 3 and the base 1.
[0036] An inner sleeve 24 is also connected to the inner side of the inner ring platform 23, and a through hole for the screw rod 31 to penetrate is provided in the inner sleeve 24. The inner sleeve 24 is sleeved on the outside of the screw rod 31, which has a supporting and guiding effect on the screw rod 31. The spring 4 is arranged on the outside of the inner sleeve 24, and the inner sleeve 24 can also position the upper end of the spring 4.
[0037] At least two guide rods 12 are provided on the base 1, and guide holes 22 adapted to the guide rods 12 are provided on the locking sleeve 2. The locking sleeve 2 can slide along the axial direction of the guide rods 12 to meet the requirement that when the height of the adjusting bolt 3 needs to be adjusted, a force can be applied to the locking sleeve 2 to overcome the elastic force of the spring 4. The locking sleeve 2 slides downward along the guide rods 12, and the anti-rotation internal tooth 21 is disengaged from the anti-rotation external tooth 34. The adjusting bolt 3 is rotated to adjust its height. After the adjustment is in place, the locking sleeve 2 is released, and the locking sleeve 2 will slide upward along the guide rods 12 under the elastic force of the spring 4, and the anti-rotation internal tooth 21 and the anti-rotation external tooth 34 cooperate to achieve the purpose of locking and anti-rotation.
[0038] Four guide rods 12 are provided, and four corresponding guide holes 22 are provided. The four guide holes 22 are evenly distributed along the circumference of the locking sleeve 2. The four guide rods 12 are evenly distributed, and the locking sleeve 2 slides up and down relative to the base 1 stably and reliably, and will not rotate.
[0039] The bolt head includes an anti-rotation portion 32 for mounting the anti-rotation external teeth 34 and a support portion 33 provided at the top of the anti-rotation portion 32. The outer diameter of the support portion 33 is greater than the outer diameter of the anti-rotation portion 32. A shoulder can be formed between the support portion 33 and the anti-rotation portion 32, and this shoulder can define the lower limit position of the adjusting bolt 3.
[0040] A threaded hole 11 for threaded connection with the screw rod 31 of the adjusting bolt 3 is provided on the base 1. The screw rod 31 of the adjusting bolt 3 can be threadedly connected to the base 1 through the threaded hole 11. By rotating the adjusting bolt 3, the support height of the self-locking nut 5 can be adjusted. After the adjustment height is appropriate, under the elastic force of the spring 4, the locking sleeve 2 moves upward and its anti-rotation internal teeth 21 are engaged with the anti-rotation external teeth 34 on the adjusting bolt 3. The locking sleeve 2 is arranged on the base 1 through the guide post and cannot rotate. By means of the locking sleeve 2, it can be ensured that the adjusting bolt 3 cannot rotate, so as to maintain the uniformity of the height and meet the requirement of the consistency of the closing position of the self-locking nut 5.
[0041] A positioning sleeve 13 is provided on the base 1, and the positioning sleeve 13 is sleeved outside the screw rod 31. The rod end of the screw rod 31 can pass through the positioning sleeve 13 and be threadedly connected to the threaded hole 11. The spring 4 is sleeved outside the positioning sleeve 13, which can play a role in positioning the lower end of the spring 4.
[0042] The self-locking nut 5 to be closed is placed on the top end face of the bolt head waiting for the closing block to close it. This height adjustment device can be adjusted according to the closing indentation height of different self-locking nuts 5. When the height needs to be adjusted, a force is applied to the locking sleeve 2, such as pressing the locking sleeve 2 downward. The locking sleeve 2 moves downward against the elastic force of the spring 4, and the anti-rotation internal teeth 21 in the locking sleeve 2 are separated from the anti-rotation external teeth 34 on the adjusting bolt 3. At this time, the height can be adjusted by rotating the adjusting bolt 3, so as to achieve the purpose of adjusting the closing indentation height of the self-locking nut 5. After the height adjustment is in place, the locking sleeve 2 is released, and the locking sleeve 2 resets under the elastic force of the spring 4. The anti-rotation internal teeth 21 in the locking sleeve 2 are partially engaged with the anti-rotation external teeth 34 of the adjusting bolt 3. The locking sleeve 2 cannot rotate under the restriction of the guide rod 12 of the base 1, ensuring that the adjusting bolt cannot rotate, playing a role in preventing the adjusted adjusting bolt 3 from rotating, so as to ensure the uniformity of the height of the self-locking nut 5 to be closed. The utility model has a simple structure, and the adjustment process is convenient and fast. It can be adjusted according to the closing position of different self-locking nuts 5, and can lock the determined closing indentation height after the adjustment is in place, avoiding height changes during the closing process. The adjustment efficiency of the closing position of the self-locking nut 5 is greatly improved, and the requirement of the consistency of the closing processing quality of the self-locking nut 5 is met.
[0043] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A height adjustment device for self-locking nut necking, characterized in that, It includes a base (1), a locking sleeve (2), an adjusting bolt (3) and a spring (4). The locking sleeve (2) is arranged on the base (1) to slide up and down. The adjusting bolt (3) includes a bolt head and a screw rod (31). The top surface of the bolt head is used to support a self-locking nut (5). The rod end of the screw rod (31) passes through the locking sleeve (2) and is threadedly connected to the base (1). The spring (4) is sleeved outside the screw rod (31) and is located between the locking sleeve (2) and the base (1). It also includes an anti-rotation mechanism, which includes a sleeve anti-rotation structure arranged on the locking sleeve (2) and a bolt anti-rotation structure arranged on the adjusting bolt (3). During adjustment, the locking sleeve (2) moves against the elastic force of the spring (4), the sleeve anti-rotation structure and the bolt anti-rotation structure are disengaged, and the adjusting bolt (3) is rotated for height adjustment. After the adjustment is in place, the locking sleeve (2) resets, and the sleeve anti-rotation structure and the bolt anti-rotation structure interact to prevent the adjusting bolt (3) from rotating.
2. The height adjustment device according to claim 1, wherein The anti-rotation mechanism is arranged between the upper part of the locking sleeve (2) and the bolt head of the adjusting bolt (3).
3. The height adjustment device according to claim 2, characterized in that, The sleeve anti-rotation structure is an anti-rotation internal tooth (21), and the bolt anti-rotation structure is an anti-rotation external tooth (34) that engages with the anti-rotation internal tooth (21). The anti-rotation internal tooth (21) is arranged on the inner wall of the locking sleeve (2), and the anti-rotation external tooth (34) is arranged on the outer surface of the bolt head of the adjusting bolt (3).
4. The height adjustment device according to any one of claims 1-3, characterized in that, The locking sleeve (2) is provided with an inner ring platform (23), and the upper end of the spring (4) acts on the inner ring platform (23).
5. The height adjustment device according to claim 4, characterized in that, An inner sleeve (24) is also connected to the inner side of the inner ring platform (23), and a through hole for the screw rod (31) to pass through is provided in the inner sleeve (24).
6. The height adjustment device according to any one of claims 1 to 3, characterized in that At least two guide rods (12) are provided on the base (1), and guide holes (22) adapted to the guide rods (12) are provided on the locking sleeve (2).
7. The height adjustment device according to claim 6, wherein, There are four guide rods (12), and correspondingly four guide holes (22). The four guide holes (22) are evenly distributed along the circumferential direction of the locking sleeve (2).
8. The height adjustment device according to claim 3, characterized in that, The bolt head includes an anti-rotation part (32) for installing the anti-rotation external tooth (34) and a support part (33) arranged on the top of the anti-rotation part (32). The outer diameter of the support part (33) is larger than the outer diameter of the anti-rotation part (32).
9. The height adjustment device according to any one of claims 1 to 3, characterized in that, A threaded hole (11) for threadedly connecting with the screw rod (31) of the adjusting bolt (3) is provided on the base (1).
10. The height adjustment device according to claim 9, characterized in that, A positioning sleeve (13) is provided on the base (1), and the positioning sleeve (13) is sleeved outside the screw rod (31).