Verticality measuring instrument for ribbed end face of locknut
By combining the base, elastic expansion sleeve, and rotary table, the problem of unstable measurement and cumbersome operation of the ribbed end face of the anti-loosening nut is solved, achieving efficient and accurate perpendicularity measurement and reducing costs.
Patent Information
- Application Number
- CN202520187249.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-06
AI Technical Summary
In the existing technology, the perpendicularity detection of the ribbed end face of the anti-loosening nut has problems such as unstable measurement, cumbersome operation and high cost, making it difficult to achieve efficient and accurate quality control.
The design employs a combination of a base, an elastic expansion sleeve, a rotating stage, and a dial indicator. The nut is fixed by the elastic expansion sleeve, the rotating stage is rotatably connected to the base, and the dial indicator pointer contacts the end face of the nut. The optical axis and guide groove ensure coaxiality, enabling accurate measurement.
It improves the accuracy and efficiency of measuring the ribbed end face of the anti-loosening nut, reduces measurement errors, simplifies the operation process, and lowers costs.
Smart Images
Figure CN223710523U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of nut detection, in particular to a perpendicularity measuring instrument for a ribbed end face of a lock nut. BACKGROUND
[0002] In the field of nut manufacturing, the perpendicularity detection of the ribbed end face of a lock nut is an important quality control link. In modern manufacturing industry, the quality requirements for parts and components of precision machinery and high-end equipment are increasingly high, especially for key fasteners such as lock nuts, the perpendicularity of the ribbed end face of which will directly affect the performance and service life of the entire assembly. Therefore, efficient and accurate detection technology has become an important means to improve product quality and production efficiency.
[0003] In related technologies, in order to detect the perpendicularity of the ribbed end face of a lock nut, the following methods are usually used: first, an ordinary dial gauge is used to directly contact the nut end face for measurement, but since the nut end face has 92 ribs and is not flat, the measurement result is unstable; second, a special fixture is used to fix the nut before measurement, but these fixtures are often complex in structure and tedious to operate, and cannot guarantee the consistency of the positioning reference for each measurement; third, optical measuring instruments are used, which have high accuracy but are high in cost and not suitable for large-scale popularization and application. CONTENT OF THE UTILITY MODEL
[0004] In order to shorten the detection time and reduce the detection error, the application provides a perpendicularity measuring instrument for a ribbed end face of a lock nut.
[0005] The perpendicularity measuring instrument for a ribbed end face of a lock nut provided by the application adopts the following technical solution:
[0006] The perpendicularity measuring instrument for a ribbed end face of a lock nut comprises a base, an elastic sleeve, a rotating table and a dial gauge, the elastic sleeve is used to position a nut to be measured, the rotating table is rotationally connected with the base, the elastic sleeve is coaxially arranged with the rotating table, and the rotating table is used to support the elastic sleeve and allow the elastic sleeve to rotate synchronously with itself, the dial gauge is arranged on one side of the rotating table and connected with the base, and the pointer of the dial gauge is in contact with the ribbed end face of the nut to be measured through an abutment plate.
[0007] By adopting the above technical solution, accurate measurement of the ribbed end face of the lock nut can be realized. Specifically, the combined design of the base, the elastic sleeve, the rotating table and the dial gauge enables the nut to be measured to be fixed at the elastic sleeve, ensuring that the nut will not deviate during measurement. At the same time, the rotational connection design of the rotating table and the base enables the nut to rotate smoothly on the horizontal plane, the pointer of the dial gauge contacts the ribbed end face of the nut through the abutment plate, and the run-out value can be read in real time, which is then converted into perpendicularity data, thereby improving the accuracy and efficiency of the measurement.
[0008] Optionally, the rotating table comprises a rotating base and an optical axis arranged coaxially, and the elastic sleeve is sleeved on the optical axis.
[0009] By adopting the above technical scheme, the optical axis is not only used for guiding the elastic sleeve, but also ensures the coaxiality between the rotating table and the elastic sleeve, so that the axis of the nut to be measured and the rotation center overlap in the measurement process, thereby improving the accuracy of the measurement result and effectively reducing the measurement error caused by the coaxiality deviation.
[0010] Optionally, the elastic sleeve comprises a sleeve, a retaining ring and a plurality of elastic pieces, the elastic pieces are arranged at equal intervals around the sleeve axis, one end of the elastic piece is fixed to the inner diameter of the retaining ring, and an external thread is arranged on the outer wall of the elastic piece for cooperating with the nut to be measured.
[0011] By adopting the above technical scheme, the sleeve provides a stable support structure as the main part of the elastic sleeve. The plurality of elastic pieces are arranged at equal intervals around the sleeve axis, which not only increases the contact area with the nut to be measured, but also matches the internal thread of the nut to be measured through the external thread design on the outer wall of the elastic piece, thereby further enhancing the connection between the two, effectively preventing the nut from loosening or falling off during the measurement process, thereby improving the reliability and stability of the measurement.
[0012] Optionally, a guide block parallel to the axis of the sleeve is arranged on the inner wall of the sleeve, and a guide groove matched with the guide block is arranged on the optical axis.
[0013] By adopting the above technical scheme, the stable connection and accurate transmission between the sleeve and the optical axis are ensured. The cooperation between the guide block and the guide groove enables the sleeve and the optical axis to rotate synchronously.
[0014] Optionally, a fine threaded shaft is coaxially connected to the side of the optical axis away from the rotating base, and a reverse tapered expansion plug is threadedly connected to the fine threaded shaft, and the expansion plug is used to cooperate with the elastic piece.
[0015] By adopting the above technical scheme, the elastic sleeve can be accurately expanded. When the rotating base is fixed, the reverse tapered expansion plug on the fine threaded shaft can be gradually rotated and advanced by thread connection, thereby pressing the elastic piece to expand outward, ensuring that the nut to be measured is firmly fixed in the elastic sleeve. This design not only improves the stability of the nut during the measurement process, but also enhances the accuracy of the measurement result.
[0016] Optionally, a coarse threaded shaft is arranged between the optical axis and the rotating base, and a locking ring is sleeved on the coarse threaded shaft.
[0017] By adopting the above technical scheme, the inner wall of the locking ring is matched with the outer thread of the coarse thread shaft, so that when the locking ring is rotated, it moves along the axial direction on the coarse thread shaft, and by rotating the locking ring, the elastic sleeve is pushed to approach the expansion plug when the locking ring moves along the coarse thread shaft, so that effective expansion effect is achieved.
[0018] Optionally, one side of the base is provided with a guide rail, a sliding block is slidably connected to the guide rail, a guide rod is arranged on the sliding block in the vertical direction, a cross bar is slidably connected to the guide rod, and a locking buckle is arranged between the guide rod and the cross bar.
[0019] By adopting the above technical scheme, the position of the dial gauge is flexibly adjusted, so that the measurement is more accurate. Meanwhile, the design of the locking buckle effectively prevents accidental movement of the cross bar during measurement, thereby improving the measurement stability.
[0020] In summary, the present application has at least one of the following beneficial technical effects:
[0021] 1. The gage uses the elastic sleeve to connect with the nut to be measured, and realizes the fixation of the product through the expansion thread, so as to ensure the accuracy of the positioning reference, thereby improving the reliability and consistency of the measurement.
[0022] 2. The design of the elastic sleeve and the rotating table enables the dial gauge to measure the whole circle position on the ribbed end face, read the runout data and directly convert it into perpendicularity data, thereby improving the measurement accuracy and efficiency.
[0023] 3. During the measurement process, the whole system structure is simple and convenient to operate, can clamp and fix at one time and accurately read the runout value, and significantly reduces the operation difficulty and time cost. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is a structural schematic diagram of the perpendicularity measuring instrument for the ribbed end face of the lock nut provided by the embodiment of the present application.
[0025] Figure 2 is a schematic diagram of the internal structure of the perpendicularity measurement of the lock nut ribbed end face provided by the embodiment of the present application.
[0026] Figure 3 is a schematic diagram of the internal structure of the elastic sleeve provided by the embodiment of the present application.
[0027] Explanation of reference signs: 1 - base; 2 - elastic sleeve; 201 - sleeve; 202 - check ring; 203 - elastic sheet; 204 - guide block; 3 - rotating table; 301 - rotating base; 302 - coarse threaded shaft; 303 - optical shaft; 304 - fine threaded shaft; 305 - guide groove; 4 - dial gauge; 401 - abutting plate; 5 - expansion plug; 6 - locking ring; 7 - cushion block; 8 - guide rail; 9 - sliding block; 10 - guide rod; 11 - crossbar; 12 - locking buckle. DETAILED DESCRIPTION
[0028] The following description will be made in conjunction with the accompanying drawings. Figures 1-3 The application is further described in detail.
[0029] The embodiments of the application disclose a perpendicularity measuring instrument for a ribbed end face of a lock nut.
[0030] As shown in Figure 1 and Figure 2 , the perpendicularity measuring instrument for the ribbed end face of the lock nut comprises a base 1, an elastic sleeve 2, a rotating table 3 and a dial gauge 4. The elastic sleeve 2 is used for positioning a lock nut to be measured, the rotating table 3 is rotationally connected with the base 1, the elastic sleeve 2 is coaxially arranged with the rotating table 3, and the rotating table 3 supports the elastic sleeve 2 and allows synchronous rotation thereof. The dial gauge 4 is arranged on one side of the rotating table 3 and connected with the base 1, and a pointer thereof is in contact with the ribbed end face of the lock nut to be measured through an abutting plate 401. The abutting plate 401 is designed in a flat head form to adapt to the ribbed end face.
[0031] Specifically, the base 1, as the basis of the whole measuring instrument, can be made of metal material and has high strength and rigidity. The rotating table 3 can be rotationally connected with the base 1 through a bearing to ensure smooth operation of the rotating table 3.
[0032] Through this combined design, the lock nut to be measured can be fixed at the elastic sleeve 2, so that the lock nut cannot deviate during the measurement. The rotating connection design of the rotating table 3 and the base 1 allows the lock nut to rotate smoothly on the horizontal plane. The pointer of the dial gauge 4 is in contact with the ribbed end face of the lock nut through the abutting plate 401, so that the run-out value can be read in real time, and then converted into perpendicularity data, thereby improving the accuracy and efficiency of the measurement.
[0033] As shown in Figure 1 and Figure 2 , the rotating table 3 comprises a rotating base 301 and an optical shaft 303 arranged coaxially, and the elastic sleeve 2 is sleeved on the optical shaft 303. The optical shaft 303 not only guides the elastic sleeve 2, but also ensures the coaxiality between the rotating table 3 and the elastic sleeve 2, so that the axis of the lock nut to be measured and the rotating center overlap during the measurement, thereby improving the accuracy of the measurement result and effectively reducing the measurement error caused by the coaxiality deviation.
[0034] As shown in Figure 3As shown, the elastic expansion sleeve 2 includes a sleeve 201, a retainer 202 and a plurality of elastic sheets 203, the retainer 202 is arranged on one side of the sleeve 201, the elastic sheets 203 are arranged at equal intervals around the axis of the sleeve 201, one end is fixed to the inner diameter of the sleeve 201, and the outer wall of the elastic sheet 203 is provided with external threads matched with the nut to be measured. The sleeve 201 serves as the main part, providing stable support, the elastic sheet 203 increases the contact area with the nut to be measured, the external thread design matches the internal thread of the nut to be measured, enhances the connection degree, effectively prevents the nut from loosening or falling off during measurement, and improves the reliability and stability of the measurement.
[0035] The inner wall of the sleeve 201 is provided with a guide block 204 arranged parallel to the axis direction, and the optical axis 303 is provided with a guide groove 305 matched with the guide block 204. The cooperation structure of the guide block 204 and the guide groove 305 ensures that the sleeve 201 and the optical axis 303 keep synchronous rotation.
[0036] As shown in Figure 1 and Figure 2 , the optical axis 303 is coaxially connected with a fine threaded shaft 304 away from the rotating base 301, and the fine threaded shaft 304 is threadedly connected with an inverted tapered expansion plug 5, which is used to cooperate with the elastic sheet 203. The inverted tapered expansion plug 5 is gradually rotated and pushed forward by thread connection, pressing the elastic sheet 203 to expand outward, ensuring that the nut to be measured is firmly fixed in the elastic expansion sleeve 2, improving the stability of the nut during measurement, and enhancing the accuracy of the measurement results.
[0037] The optical axis 303 and the rotating base 301 are provided with a coarse threaded shaft 302, and the coarse threaded shaft 302 is provided with a locking ring 6. The inner wall of the locking ring 6 matches the outer thread of the coarse threaded shaft 302, and when the locking ring 6 is rotated, it moves axially and pushes the elastic expansion sleeve 2 close to the expansion plug 5, achieving effective expansion effect. In order to facilitate the locking ring 6 to push the elastic expansion sleeve 2, a spacer 7 can be arranged between the locking ring 6 and the elastic expansion sleeve 2, and the outer diameter of the coarse threaded shaft 302 is the same as that of the optical axis 303, so that the spacer 7 can be simultaneously sleeved on the coarse threaded shaft 302 and the optical axis 303, facilitating the locking ring 6 to push the elastic expansion sleeve 2.
[0038] As shown in Figure 1 and Figure 2 , in order to adjust the dial gauge 4, one side of the base 1 can be provided with a guide rail 8, the guide rail 8 is slidably connected with a sliding block 9, the sliding block 9 is provided with a guide rod 10 arranged in the vertical direction, the guide rod 10 is slidably connected with a cross bar 11, the guide rod 10 and the cross bar 11 are provided with a locking buckle 12, and the dial gauge 4 is arranged at one end of the cross bar 11 away from the guide rod 10. The position of the dial gauge 4 is adjusted flexibly, the measurement is more accurate, the locking buckle 12 is designed to effectively prevent accidental movement of the cross bar 11 during measurement, and the measurement stability is improved.
[0039] Specifically, the cooperation of the guide rail 8 and the sliding block 9 can adopt the form of an I-shaped groove and an I-shaped sliding block or the form of a T-shaped groove and a T-shaped sliding block, etc., to ensure smooth sliding without obstruction. The guide rod 10 can be made of high-strength stainless steel material and has good bending resistance. The locking buckle 12 between the cross rod 11 and the guide rod 10 can adopt a quick-release threaded abutting buckle design, which is convenient and fast for locking and unlocking.
[0040] The implementation principle of the verticality measuring instrument for the ribbed end face of the locknut provided by the embodiment is as follows:
[0041] The measured nut is placed at the elastic expansion sleeve 2, the internal thread of the measured nut is matched with the external thread of the elastic sheet 203, the rotating base 301 is fixed, the inverted conical expansion plug 5 is installed and rotated, the locking ring 6 is rotated, the expansion plug 5 gradually presses the elastic sheet 203 to expand outward, until the external thread of the elastic sheet 203 is tightly matched with the internal thread of the measured nut, the firm fixation of the measured nut is realized. Then, the measured nut is stably rotated on the horizontal plane by rotating the rotating table 3. In this process, the pointer of the dial gauge 4 is in contact with the ribbed end face of the measured nut through the abutting plate 401, and the run-out value is read in real time. Due to the rotating connection design of the rotating table 3 and the base 1, and the coaxial arrangement of the elastic expansion sleeve 2 and the rotating table 3, the stability and accuracy of the measured nut in the measurement process are ensured. The verticality data of the ribbed end face of the measured nut can be obtained by calculating the run-out value, and the accurate measurement of the verticality of the ribbed end face of the locknut is realized.
[0042] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A perpendicularity measuring instrument for the ribbed end face of a lock-loosening nut, used to detect the end face circular runout of the ribbed end face of the lock-loosening nut, characterized in that, include: The base (1), elastic expansion sleeve (2), rotating table (3), and dial indicator (4) are provided. The elastic expansion sleeve (2) is used to position the nut to be tested. The rotating table (3) is rotatably connected to the base (1). The elastic expansion sleeve (2) and the rotating table (3) are coaxially arranged. The rotating table (3) is used to support the elastic expansion sleeve (2) and allow it to rotate synchronously with itself. The dial indicator (4) is located on one side of the rotating table (3) and connected to the base (1). The pointer of the dial indicator (4) is connected to the ribbed end face of the nut to be tested through the abutment plate (401).
2. The perpendicularity measuring instrument for the ribbed end face of an anti-loosening nut according to claim 1, characterized in that, The rotary table (3) includes a rotating base (301) and an optical axis (303) arranged coaxially, and the elastic expansion sleeve (2) is sleeved on the optical axis (303).
3. The perpendicularity measuring instrument for the ribbed end face of an anti-loosening nut according to claim 2, characterized in that, The elastic expansion sleeve (2) includes a sleeve (201), a retaining ring (202) and a plurality of elastic plates (203). The elastic plates (203) are arranged at equal intervals around the axis of the sleeve (201), and one end of each elastic plate (203) is fixed to the inner diameter of the retaining ring (202). The outer wall of the elastic plate (203) is provided with an external thread for cooperating with the nut to be tested.
4. The perpendicularity measuring instrument for the ribbed end face of an anti-loosening nut according to claim 3, characterized in that, The inner wall of the sleeve (201) is provided with a guide block (204) arranged parallel to its own axis, and the optical axis (303) is provided with a guide groove (305) that cooperates with the guide block (204).
5. A perpendicularity measuring instrument for the ribbed end face of an anti-loosening nut according to claim 3, characterized in that, A fine threaded shaft (304) is coaxially fixed to the side of the optical axis (303) away from the rotating base (301). An inverted conical expansion plug (5) is threaded onto the fine threaded shaft (304), and the expansion plug (5) is used to cooperate with the elastic sheet (203).
6. The perpendicularity measuring instrument for the ribbed end face of an anti-loosening nut according to claim 5, characterized in that, A coarse threaded shaft (302) is provided between the optical axis (303) and the rotating base (301), and a locking ring (6) is provided on the outer sleeve of the coarse threaded shaft (302).
7. The perpendicularity measuring instrument for the ribbed end face of an anti-loosening nut according to claim 1, characterized in that, The base (1) has a guide rail (8) on one side, a sliding block (9) is slidably connected to the guide rail (8), a guide rod (10) is provided on the sliding block (9) in the vertical direction, a crossbar (11) is slidably connected to the guide rod (10), a locking buckle (12) is provided between the guide rod (10) and the crossbar (11), and the dial indicator (4) is located at the end of the crossbar (11) away from the guide rod (10).