Torsion spring measuring jig

Abstract

The utility model discloses a torsion spring measuring tool, comprising a first seat body which can be connected with one end of a torsion spring, and an adapter which is coaxially arranged with the first seat body and can be connected with the other end of the torsion spring to measure torsion through rotation. After the torsion spring is coaxially connected between the first seat body and the adapter, the first seat body is fixed, and the adapter is rotated by the torque wrench to twist the torsion spring to a certain angle, at the moment, the torsion value of the corresponding angle of the torsion spring can be obtained, the spring constant of the torsion spring can be obtained through a formula, and rapid measurement of the torsion spring in the production process can be met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to torsional spring measuring device technical field, concretely relates to a torsional spring measuring fixture. BACKGROUND

[0002] Torsional spring has certain torsion after torsion, and will be recovered to initial state after release, need measuring through torsional spring testing machine in the prior art of torsional spring measurement, through detecting torsional spring in the process of torsion, corresponding determination its torsion value, the angle of rotation, calculate k value, in the production preparation link, the performance of torsional spring is detected to guarantee that it meets the requirement, therefore needs quick measurement torsional spring initial angle, k value, torsion measurement in the production manufacturing process, thus needs to develop a torsional spring measuring fixture. SUMMARY

[0003] The utility model discloses a torsional spring measuring fixture to solve the above technical problem, through the coaxial connection torsional spring between first seat and adapter, fix first seat and make torsional spring twist to certain angle through torsion wrench rotation adapter, can get torsional spring corresponding angle torsion value at this moment, and can get spring constant of torsional spring through formula, can satisfy the measurement of torsional spring in the production process.

[0004] To realize the above-mentioned utility model purposes, the technical solutions adopted by the utility model are as follows:

[0005] A torsional spring measuring fixture, comprising a first seat connectable to one end of a torsional spring, and an adapter coaxially arranged with the first seat and connectable to the other end of the torsional spring for measuring torsion. In the measuring process, the first seat and the adapter are coaxially arranged in sequence; the torsional spring is connected between the first seat and the adapter; after the torsional spring is coaxially connected between the first seat and the adapter, the first seat is fixed, and the adapter is rotated by a torsion wrench to make the torsional spring twist to a certain angle, at which time the torsion value corresponding to the angle of the torsional spring can be obtained, and the spring constant of the torsional spring can be obtained through a formula, thereby satisfying the quick measurement of the torsional spring in the production process.

[0006] Preferably, the first seat is provided with a first connecting hole for connecting one end of the torsional spring, and the adapter is provided with a second connecting hole for connecting the other end of the torsional spring. The two ends of the torsional spring are connected through the first connecting hole and the second connecting hole respectively, and the circumferences of the two ends of the torsional spring are limited, so that one end of the torsional spring can be driven to rotate when the adapter is rotated, forming a corresponding torsion. This connecting structure is simple and convenient to connect. The torsional spring is twisted to a certain angle by rotating the adapter with the torsion wrench, at which time the torsion value corresponding to the angle of the torsional spring can be obtained, and the spring constant of the torsional spring can be obtained through a formula, thereby satisfying the quick measurement of the torsional spring in the production process.

[0007] Preferably, a first connecting column is arranged in the middle of the first seat.

[0008] The adapter is provided with a first connecting slot embedded with the first connecting column. The first connecting column and the second connecting column are both circular in radial cross-section; the first connecting column and the first connecting slot are embedded, so that the adapter has a fulcrum at the shaft center during rotation, and the first connecting column also supports the inner side of the torsion spring, which can effectively prevent the torsion spring from being skewed and affecting the measurement results; the first connecting column and the second connecting column, which are circular in cross-section, facilitate the connection and disconnection of the adapter and the first seat, and facilitate the rotation of the adapter;

[0009] Preferably, the first connecting hole and the first connecting column are both provided on the same side of the first seat facing the adapter; the first connecting slot and the second connecting hole are both provided on the same side of the adapter facing the first seat. The oppositely arranged first connecting hole and second connecting hole, first connecting slot and first connecting column enable the adapter and the first seat to be coaxially arranged and connected with the torsion spring in between, improving the convenience of the measurement assembly process.

[0010] Preferably, the outer periphery of the first connecting hole is in contact with the outer periphery of the first connecting column;

[0011] The second connecting hole is in communication with the first connecting slot. The first connecting hole is provided near the first connecting column, and the second connecting hole is provided near the first connecting slot, which is conducive to improving the connection stability during measurement;

[0012] Preferably, the first connecting hole and the second connecting hole are both waist-shaped holes, which can adapt to different wire diameters of the torsion spring for measurement operation, and have high measurement adaptability.

[0013] Preferably, in the initial state, the vertical projection of the first connecting hole overlaps with the vertical projection of the second connecting hole. After the first connecting hole and the second connecting hole are connected to the two ends of the torsion spring, it is the pre-detection state, at this time, the second connecting hole has a fulcrum at the shaft center of the adapter, and the angle of rotation relative to the initial state is the included angle between the two ends of the torsion spring in the pre-detection state; after the second connecting hole is rotated and connected to one end of the torsion spring, it is the pre-detection state. Since the initial state of the second connecting hole is opposite to the first connecting hole, that is, it is opposite to one end of the torsion spring, the angle of rotation of the adapter relative to the initial state is measured, and the initial angle of the torsion spring is obtained. This detection method is simple and easy to implement, and can meet the demand for quickly measuring the initial angle of the torsion spring.

[0014] Preferably, the torsion spring measurement jig further comprises an angle measuring mechanism connected with the adapter to rotate synchronously for measuring the angle. The angle measuring mechanism is provided to rotate synchronously with the adapter, which facilitates the measurement of the initial angle of the torsion spring, and facilitates the measurement of the rotation angle of the torsion spring during the measurement of the torsion, meeting the demand for quickly measuring the initial angle and calculating the k value.

[0015] Preferably, the angle measuring mechanism comprises an upper shaft connected with the adapter for synchronous rotation, an upper seat arranged on the outer periphery of the upper shaft,

[0016] The upper shaft is provided with a indicating needle at the end away from the adapter for synchronous rotation, and the axial projection of the indicating needle overlaps with the position of the second connecting hole.

[0017] The upper seat is provided with a dial on one side around the rotation axis of the indicating needle opposite to the end of the indicating needle.

[0018] The axial projection of the line connecting the 0 point of the dial and the center of the dial overlaps with the first connecting hole. The dial and the indicating needle are arranged outward, and the axial projection of the line connecting the 0 point of the dial and the center of the dial overlaps with the first connecting hole. Since the dial and the first seat are not rotating, one end of the torsion spring is at the 0 point of the measured angle, and the pointing position of the indicating needle corresponds to the position of the second connecting hole. When the second connecting hole is connected with the torsion spring, the reading of the dial pointed by the indicating needle is the initial angle of the torsion spring. In the initial state, the indicating needle points to the 0 point of the dial, and the vertical projection thereof overlaps with the first connecting hole. The initial state is the 0 point of the dial, which corresponds to the first connecting hole. After rotating the upper shaft, the adapter is synchronously rotated to connect the second connecting hole with one end of the torsion spring, reaching the pre-detection state. The indicating needle is synchronously rotated with the upper shaft, and the reading of the dial pointed by the indicating needle corresponds to one end of the torsion spring connected with the second connecting hole. Thus, the value of the dial pointed by the indicating needle is the initial angle of the torsion spring. This measurement method is simple and convenient to operate, and can meet the requirement of rapid measurement of the initial angle of the torsion spring. Meanwhile, the upper shaft is connected with the torque wrench, the torque wrench is rotated to drive the upper shaft and make the adapter rotate. The angle rotated in one rotation is the difference between the value of the dial pointed by the indicating needle at this time and the value pointed by the initial angle. This method for measuring the rotation angle is simple and convenient, and the k value of the torsion spring can be derived by reading the torque value of the torque wrench at this time, meeting the requirement of rapid measurement of the initial angle, k value and torque of the torsion spring.

[0019] Preferably, the upper seat is internally sleeved with a bearing, and the end of the upper shaft away from the indicating needle is provided with a connecting surface movably connected with the bearing. The upper shaft, the bearing and the upper seat are successively sleeved from inside to outside. Specifically, the upper seat is provided with a cavity matched with the bearing, and the bearing is arranged to improve the rotation stability of the upper shaft. During the rotation of the upper shaft to drive the adapter, the coaxial operation stability is improved.

[0020] Preferably, the end of the upper shaft away from the indicating needle is provided with a second connecting column, and the side of the adapter away from the torsion spring is provided with a second connecting groove embedded with the second connecting column.

[0021] Preferably, a through hole is provided between the first connecting groove and the second connecting groove, and the second connecting post is provided with a threaded hole for threading with the screw passing through the through hole; the end of the screw is fixed in the first connecting groove, and the threaded end of the screw is provided in the threaded hole.

[0022] Preferably, the upper seat is connected to the lower seat below, wherein the lower seat is coaxially fitted with the first seat body inside;

[0023] A support column is fixedly connected between the lower seat and the upper seat, and the support column, the upper seat, and the lower seat enclose a working space. The working space accommodates the adapter, the torsion spring, and the first connecting column.

[0024] This application has achieved beneficial technical effects:

[0025] This invention connects the torsion spring coaxially between the first base and the adapter. After fixing the first base, the adapter is rotated with a torque wrench to twist the torsion spring to a certain angle. At this point, the torque value of the torsion spring at the corresponding angle can be obtained, and the spring constant of the torsion spring can be obtained through the formula, which can meet the requirement of rapid measurement of the torsion spring in the production process. Attached Figure Description

[0026] Figure 1 The diagram shown is a structural schematic of this utility model;

[0027] Figure 2 The diagram shown is an exploded structural schematic of this utility model;

[0028] Figure 3 The diagram shown is another schematic diagram of the explosive structure of this utility model;

[0029] Figure 4 The image shown is a schematic diagram of the exploded structure of this utility model from another angle.

[0030] Figure 5 The diagram shown is a top view of the structure of this utility model in an exploded state.

[0031] Figure 6 As shown Figure 5 Schematic diagram of the DD-direction cross-section structure;

[0032] Figure 7 The diagram shown is a top view of the present invention.

[0033] Figure 8 As shown Figure 7 A schematic diagram of the AA-direction cross-section structure;

[0034] Figure 9 As shown Figure 7 Schematic diagram of the BB-direction cross-section structure;

[0035] Figure 10It is the assembly schematic drawing of partial structure of the utility model;

[0036] Figure 11 For Figure 10 It is the sectional structure schematic drawing of C-C of the utility model;

[0037] Figure 12 It is the structure schematic drawing of adapter piece;

[0038] Figure 13 It is the structure schematic drawing of adapter piece;

[0039] Figure 14 It is the arrangement structure schematic drawing of first connecting hole;

[0040] Figure 15 It is the structure schematic drawing of upper shaft;

[0041] Figure 16 It is the structure schematic drawing of first seat;

[0042] Figure 17 It is the schematic diagram of 0 scale line and first connecting hole alignment;

[0043] Figure 18 It is another view schematic diagram corresponding to Figure 17 ;

[0044] Figure 19 It is the schematic diagram of indicating needle and second connecting hole alignment;

[0045] Figure 20 It is another view schematic diagram corresponding to Figure 19 ;

[0046] Figure 21 It is the angle measurement schematic diagram;

[0047] Figure 22 It is the state schematic diagram of indicating needle after clockwise rotation using torque wrench;

[0048] Figure 23 It is the indicating needle pointing schematic diagram corresponding to Figure 22 ;

[0049] Figure 24 It is the state schematic diagram of indicating needle under torsional spring initial angle when torque wrench is not rotated;

[0050] Figure 25 It is the indicating needle pointing schematic diagram corresponding to Figure 24 ;

[0051] Figure 26 It is the state schematic diagram of indicating needle after counterclockwise rotation using torque wrench;

[0052] Figure 27 The direction of the indicating needle is shown as Figure 26 corresponding to the schematic diagram.

[0053] Figure 28 The direction of the torsion spring inserted into the first seat is shown.

[0054] Figure 29 The structure of the torsion spring with a wire diameter of A installed in the first seat is shown.

[0055] Figure 30 The structure of the torsion spring with a wire diameter of B installed in the first seat is shown.

[0056] Reference signs

[0057] 1-torsion spring; 2-first seat; 3-adapter; 21-first connecting hole; 31-second connecting hole; 22-first connecting column; 23-first connecting groove; 4-upper shaft; 5-upper seat; 40-indicating needle; 50-dial; 51-bearing; 41-connecting surface; 42-second connecting column; 33-second connecting groove; 6-lower seat; 7-supporting column; 63-third connecting groove; 64-fourth connecting groove; 23-third connecting column; 24-fourth connecting column; 8-set screw; 43-connection part. DETAILED DESCRIPTION

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained according to these drawings without creative labor, and other embodiments can also be obtained by those skilled in the art.

[0059] The technical solutions of the present application will be described in detail below with specific embodiments.

[0060] With reference to Figures 1 to 30 A torsion spring measuring jig, comprising a first seat 2 connectable to one end of a torsion spring 1, and an adapter 3 coaxially arranged with the first seat 2 and connectable to the other end of the torsion spring 1 to measure the torsion force. During the measurement, the first seat 2 and the adapter 3 are coaxially arranged in sequence; the torsion spring 1 is connected between the first seat 2 and the adapter 3; after the torsion spring 1 is coaxially connected between the first seat 2 and the adapter 3, the first seat 2 is fixed and the adapter is rotated by a torsion wrench to twist the torsion spring 1 to a certain angle, at which time the torsion value corresponding to the angle of the torsion spring 1 can be obtained, and the spring constant of the torsion spring 1 can be obtained through a formula, which can meet the requirement of quickly measuring the torsion spring 1 in the production process.

[0061] The first seat body 2 is provided with a first connecting hole 21 connected to one end of the torsion spring 1, and the adapter 3 is provided with a second connecting hole 31 connected to the other end of the torsion spring 1. The two ends of the torsion spring 1 are connected through the first connecting hole 21 and the second connecting hole 31 respectively, and the circumferential direction of the two ends of the torsion spring 1 is limited, so that when the adapter 3 is rotated, one end of the torsion spring 1 can be driven to rotate, forming a corresponding torsion force. This kind of connecting structure is simple and the connecting method is convenient. The adapter 3 is rotated by the torque wrench to make the torsion spring 1 twist to a certain angle. At this time, the torsion force value corresponding to the angle of the torsion spring can be obtained, and the spring constant of the torsion spring can be obtained through the formula, which can meet the rapid measurement of the torsion spring 1 in the production process.

[0062] The first seat body 2 is provided with a first connecting column 22 in the middle;

[0063] The adapter 3 is provided with a first connecting groove 32 embedded with the first connecting column 22. The radial section of the first connecting column 22 and the second connecting column 32 is circular; the first connecting column 22 and the first connecting groove 32 are embedded to make the adapter 3 have a fulcrum at the shaft center during rotation, and the first connecting column 22 also supports the inner side of the torsion spring 1, which can effectively prevent the torsion spring 1 from being tilted and affecting the measurement result; the first connecting column 22 and the second connecting column 32 with circular section facilitate the connection and disconnection of the adapter 3 and the first seat body 2, and facilitate the rotation of the adapter 3;

[0064] The first connecting hole 21 and the first connecting column 22 are arranged on the same side of the first seat body 2 facing the adapter 3; the first connecting groove 32 and the second connecting hole 31 are arranged on the same side of the adapter 3 facing the first seat body 2. The first connecting hole 21 and the second connecting hole 31, and the first connecting groove 32 and the first connecting column 22 are arranged oppositely, so that the adapter 3 and the first seat body 2 can be coaxially arranged and the torsion spring 1 can be connected between them, improving the convenience of the measurement assembly process.

[0065] The outer periphery of the first connecting hole 21 is in contact with the outer periphery of the first connecting column 22;

[0066] The second connecting hole 31 is in communication with the first connecting groove 32. The first connecting hole 21 is arranged close to the first connecting column 22, and the second connecting hole 31 is arranged close to the first connecting groove 32, which is beneficial to improve the connection stability of the measurement process;

[0067] Meanwhile, the first connecting hole 21 and the second connecting hole 31 are both waist-shaped holes, which can adapt to connect torsion springs 1 with different wire diameters for measurement operation, and have high measurement adaptability;

[0068] In the initial state, the vertical projection of the first connecting hole 21 overlaps with the vertical projection of the second connecting hole 31. After the first connecting hole 21 and the second connecting hole 31 connect the two ends of the torsion spring 1, it is the pre-detection state, at this time, the second connecting hole 31 rotates around the axis of the adapter 3 as the center relative to the initial state, and the angle of rotation is the included angle between the two ends of the torsion spring 1 in the pre-detection state. After the second connecting hole 31 rotates and connects one end of the torsion spring 1, it is the pre-detection state. Since the initial state of the second connecting hole 31 is opposite to the first connecting hole 21, that is, it is opposite to one end of the torsion spring 1, measuring the angle of rotation of the adapter 3 relative to the initial state can obtain the initial angle of the torsion spring 1. This detection method is simple and easy to implement, and can meet the demand of quickly measuring the initial angle of the torsion spring 1.

[0069] The torsion spring measuring tool also includes an angle measuring mechanism connected with the adapter 3 to rotate synchronously to measure the angle. The angle measuring mechanism that rotates synchronously with the adapter 3 facilitates the measurement of the initial angle of the torsion spring 1 and the measurement of the rotation angle of the torsion spring during the measurement of the torsion, meeting the demand of quickly measuring the initial angle and calculating the k value.

[0070] The angle measuring mechanism includes an upper shaft 4 connected with the adapter 3 to rotate synchronously, an upper seat 5 arranged on the outer periphery of the upper shaft 4,

[0071] The end of the upper shaft 4 away from the adapter 3 is provided with an indicating needle 40 that rotates synchronously with the upper shaft 4, and the axial projection of the indicating needle 40 overlaps with the arrangement position of the second connecting hole 31;

[0072] One side of the upper seat 5 is provided with a scale disc 50 opposite to the end of the indicating needle 40 around the rotation axis of the indicating needle 40 as the center;

[0073] The axial projection of the line connecting the 0 point position of the dial 50 and the axis of the dial 55 overlaps the first connecting hole 21. The dial 50 and the indicating needle 40 are both arranged outwardly, and the axial projection of the line connecting the 0 point position of the dial 50 and the axis of the dial 50 overlaps the first connecting hole 21. Since the dial 50 and the first seat 2 are both in a non-rotating state, one end of the torsion spring 1 is at the 0 point position X of the measured angle, and the pointing position Z of the indicating needle 40 corresponds to the position of the second connecting hole 31. When the second connecting hole 21 is connected with the torsion spring 1, the reading of the indicating needle 40 pointing to the dial 50 is the initial angle Y of the torsion spring 1. In the initial state, the indicating needle points to the 0 point position of the dial, and the vertical projection thereof overlaps the first connecting hole 21. The initial state is the 0 point position of the dial, which corresponds to the first connecting hole 21. After the upper shaft 4 is rotated, the adapter 3 is synchronously rotated to connect the second connecting hole 31 with one end of the torsion spring 1, so as to reach the pre-detection state. The indicating needle 40 is synchronously rotated with the upper shaft 4, and the reading of the indicating needle 40 pointing to the dial 50 corresponds to one end of the second connecting hole 31 connected with the torsion spring 1. Thus, the value of the dial 50 pointed by the indicating needle 40 is the initial angle of the torsion spring 1. This measurement method is simple and convenient to operate, and can meet the requirement of rapid measurement of the initial angle of the torsion spring 1. Meanwhile, the upper shaft 4 is connected with the torque wrench, the torque wrench is rotated to drive the upper shaft 4 and make the adapter rotate. During one rotation, the difference between the value of the dial 50 pointed by the indicating needle 40 at this time and the value of the initial angle is the rotated angle. This measurement method of the rotated angle is simple and convenient, and the k value of the torsion spring can be derived by reading the torque value of the torque wrench at this time, so as to meet the requirement of rapid measurement of the initial angle, the k value and the torque of the torsion spring.

[0074] The upper seat 5 is internally sleeved with a bearing 51, and the connecting surface 41 movably connected with the bearing 51 is arranged at one end of the upper shaft 4 away from the indicating needle 40. The upper shaft 4, the bearing 51 and the upper seat 5 are successively sleeved from inside to outside. Specifically, the upper seat 5 is provided with a cavity matched with the bearing 51, and the bearing 51 is arranged to facilitate the rotation stability of the upper shaft. During the rotation of the upper shaft and the driving of the adapter, the coaxial operation stability is further improved.

[0075] The second connecting column 42 is arranged at one end of the upper shaft 4 away from the indicating needle 40, and the second connecting groove 33 embedded with the second connecting column 42 is arranged at one side of the adapter 3 away from the torsion spring 1. The second connecting column 42, the second connecting groove 33 and the first connecting groove 32 are arranged in sequence along the axis,

[0076] The through hole 34 is arranged through the first connecting groove 32 and the second connecting groove 33, the second connecting column 42 is arranged with the threaded hole 421 which is connected with the screw 35 penetrating the through hole 34; the end of the screw 35 is fixed in the first connecting groove 32, and the threaded end of the screw 35 is arranged in the threaded hole 421; wherein the screw 35 is a countersunk screw; the second connecting column 42 is connected by the screw 35 penetrating the through hole 34, so that the adapter 3 and the upper shaft 4 can be connected, avoiding the two from being separated to affect the measurement stability, and the connection mode is simple, the space is small, and the overall structure is compact; the radial section of the second connecting groove 33 and the second connecting column 42 is a waist circle shape;

[0077] The second connecting column 42 and the second connecting groove 33 are arranged to be embedded with each other, the area of the fitting during rotation is larger, which is beneficial to the stability of the synchronous rotation of the upper shaft 4 during the rotation of the adapter 3, and improves the stability of the measurement process,

[0078] The indicating needle 40, the connecting surface 41 and the second connecting column 42 are arranged in sequence in the axial direction, wherein the radial section of the connecting surface 41 is larger than the radial section of the second connecting column 42; the radial section of the indicating needle 40 is larger than the radial section of the connecting surface 41;

[0079] The lower seat 6 is connected below the upper seat 5, wherein the first seat body 2 is coaxially embedded and connected inside the lower seat 6;

[0080] The support column 7 is fixedly connected between the lower seat 6 and the upper seat 5, wherein the working space is enclosed by the support column 7, the upper seat 5 and the lower seat 6, and the adapter 3, the torsional spring 1 and the first connecting column 22 are accommodated in the working space.

[0081] The third connecting groove 63 and the fourth connecting groove 64 are arranged in sequence in the lower seat 6 and embedded with the first seat body; the third connecting column 23 embedded with the third connecting groove 63 and the fourth connecting column 24 embedded with the fourth connecting groove 64 are arranged in the first seat body 2, the radial section shape of the third connecting groove 63 and the third connecting column 23 is a circle; the radial section shape of the fourth connecting groove 64 and the fourth connecting column 24 is a waist circle, and in the axial direction, the fourth connecting column 24 partially protrudes from the fourth connecting groove 64 to the outside; a plurality of embedded positions are arranged to improve the connection stability of the first seat body 2 and the lower seat 6, and the fourth connecting column 24 extends to the outside to limit the first seat body 2 with the vice, preventing rotation during measurement;

[0082] The upper seat 5, the lower seat 6 and the supporting column 7 are connected by the screw 8; the second connecting column 42 is arranged below the connecting surface 41; the upper shaft 4 is coaxially arranged with the connecting part 43 protruding outside on one side of the indicating needle 40; the connecting part 43 is arranged and connected with the torque wrench to complete the rotating action; the upper shaft 4, the adapter 3, the torsional spring 1 and the first seat body 2 are sequentially arranged in the technical scheme.

[0083] The technical scheme provides a kind of hand-operated quick measurement torsional spring angle and torsion tool, meet the requirement of quick measurement torsional spring initial angle, k value, torsion measurement;Wherein the technical scheme can reach measurement initial angle;Measurement torsion and K value;It is simple to operate, portable, simple structure, easy to make, low cost;Can replace accessory and measure the effect of torsional spring of different structure;

[0084] Wherein upper seat, upper shaft and bearing are assembled into one, adapter is fixed by screw and upper shaft, upper seat and lower seat are fixed by screw connecting supporting column, torsional spring and first seat body are assembled together and inserted into adapter, vice fixes the lower end of first seat body, torque wrench and sleeve are connected and loaded into upper shaft, after assembly is completed, the indication on dial is read, which is the free angle of torsional spring, i.e. initial angle Y.

[0085] Torque wrench and sleeve are assembled and assembled on the connecting part on the upper end of upper shaft, as shown in Figures 22 to 27 , wherein Figure 22 The torsion value displayed on torque wrench is shown after clockwise rotation, Figure 23 From another angle, the state schematic diagram of indicating needle corresponding to the direction of dial can be observed; Figure 24 The state diagram of initial angle of torsional spring when torque wrench is not rotated is shown, wherein Figure 25 From another angle, the state schematic diagram of indicating needle corresponding to the direction of dial can be observed; Figure 26 The torsion value displayed on torque wrench is shown after counterclockwise rotation, Figure 27 From another angle, the state schematic diagram of indicating needle corresponding to the direction of dial can be observed;Rotate torque wrench by a certain angle, read the indication on indicating needle, and the absolute value of the difference between free angle can obtain rotation angle, then read the torsion value of torque wrench, and the value of k is calculated by formula k=T / Θ;Wherein k is spring constant of torsional spring, T is torsion value, and Θ is rotation angle.

[0086] The technical scheme can measure torsional spring of different wire diameter, as shown in Figures 28 to 29 , pull out first seat body and torsional spring, replace torsional spring of different wire diameter to reassemble and measure, measure torsional spring of wire diameter A and wire diameter B.

[0087] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as there is no contradiction, any combination of the technical features should be considered within the scope of the present disclosure.

[0088] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these modifications and improvements also fall within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

[0089] The above-described embodiments of the torsion spring measuring jig provided by the present application are described in detail. The principles and implementation manners of the present application are described by applying specific examples, and the above-described embodiment is only used to help understand the core idea of the present application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the principles of the present application, and these modifications and improvements also fall within the protection scope of the present application.

Claims

1. A torsion spring measurement jig, comprising: The first seat body (2) is connected with one end of the torsion spring (1), and the adapter (3) is coaxially arranged with the first seat body (2) and is connected with the other end of the torsion spring (1) and rotates to measure the torsion force. The torsion spring measuring tool further comprises an angle measuring mechanism connected with the adapter (3) to rotate synchronously to measure the angle. The angle measuring mechanism comprises an upper shaft (4) connected with the adapter (3) to rotate synchronously, an upper seat (5) arranged on the outer periphery of the upper shaft (4), The upper shaft (4) is provided with an indicating needle (40) at the end away from the adapter (3) and rotates synchronously with the upper shaft (4), and the axial projection of the indicating needle (40) overlaps the second connecting hole (31). The upper seat (5) is provided with a scale disc (50) at the end opposite to the indicating needle (40) and arranged around the rotation axis of the indicating needle (40). The 0 point of the scale disc (50) overlaps the first connecting hole (21) in the axial projection of the line connecting the 0 point and the axis of the scale disc (50).

2. The torsion spring measuring jig of claim 1, wherein The first seat body (2) is provided with a first connecting hole (21) connected with one end of the torsion spring (1), and the adapter (3) is provided with a second connecting hole (31) connected with the other end of the torsion spring (1).

3. The torsion spring measuring tool of claim 2, wherein, The first seat body (2) is provided with a first connecting column (22) in the middle. The adapter (3) is provided with a first connecting groove (32) embedded with the first connecting column (22).

4. The torsion spring measuring tool of claim 2, wherein, The first connecting hole (21) and the second connecting hole (31) are both waist-shaped holes.

5. The torsion spring measuring tool of claim 1, wherein, The upper seat (5) is internally sleeved with a bearing (51), the upper shaft (4) is provided with a connecting surface (41) movably connected with the bearing (51) at the end away from the indicating needle (40), and the upper shaft (4), the bearing (51) and the upper seat (5) are successively sleeved from inside to outside.

6. The torsion spring measuring tool of claim 1, wherein, The upper shaft (4) is provided with a second connecting column (42) at the end away from the indicating needle (40), and the adapter (3) is provided with a second connecting groove (33) embedded with the second connecting column (42) at the side away from the torsion spring (1).

7. The torsion spring measuring tool of claim 6, wherein, The adapter (3) is provided with a first connecting groove (32) embedded with the first connecting column (22), a through hole (34) is provided between the first connecting groove (32) and the second connecting groove (33), the second connecting column (42) is provided with a screw joint hole (421) jointed with a screw (35) penetrating through the through hole (34), the end of the screw (35) is fixed in the first connecting groove (32), and the screw joint end of the screw (35) is arranged in the screw joint hole (421).

8. The torsion spring measuring tool of claim 1, wherein, The lower seat (6) is connected below the upper seat (5), and the first seat body (2) is coaxially embedded and connected in the inside of the lower seat (6). The lower seat (6) and the upper seat (5) are fixedly connected with a support column (7), and the support column (7), the upper seat (5) and the lower seat (6) form a working space.

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