Spring test fixture

Abstract

A spring testing jig comprises a base, a fixing cover plate, a spring positioning pin, a spring positioning frame, a transmission swing piece, a reset piece and an angle ruler, the transmission swing piece comprises a pushing swing block which is directly opposite to a spring to be tested and presses the spring to be tested, a hinge hole position is arranged in the middle of the pushing swing block, and the spring positioning frame is arranged in the hinge hole position. A spring positioning pin penetrates through the hinge hole position to be fixed on the base, one end of the pushing swing block is driven by the transmission swing block, the other end of the pushing swing block is connected with a reset piece, and a bevel protractor for adjusting the initial angle of the pushing swing block is arranged on the side face of the pushing swing block. The spring test fixture is used for accurately positioning and clamping a spring to be tested, assembling the spring to a device of a power source, carrying out quantitative and fixed-frequency elastic fatigue limit life tests, and is accurate in positioning, convenient to adjust, convenient in auxiliary test, easy to assemble and high in reliability. Real and accurate data can be obtained, the operation process is simplified, and the working difficulty is reduced.

Description

[Technical field]

[0002] The utility model relates to the technical field of jewelry accessories processing, in particular to the technical field of jigs for testing spring accessories in jewelry accessories. [Background technology]

[0004] Various locks are often used in the jewelry industry. In addition to conventional compression springs, locks also contain fork-shaped springs used in pull buckles. To test the springs, it is necessary to test the fatigue limit of the springs and how many times they can withstand the pull and compression process within a limited service life.

[0005] Because the fork-type spring is small in size, it is not easy to fix and place it, not to mention that it needs to be fixed and tested repeatedly. At present, it is difficult to electrify and mechanize it in the relevant technical industry, or it is tested by clamping it with a clamping fixture and pushing it repeatedly with a mechanical component. This test method itself has a certain degree of compression on the spring, which can easily cause pre-damage to the spring and affect its actual test effect. Therefore, there is no fully automated, fully mechanized, more professional and standard test method in the industry. [Summary of the invention]

[0007] In view of the above problems, the utility model proposes a spring test fixture, which can be assembled on a device with a power source and configured with a rhythmic pushing device with automatic technology to test the elastic fatigue life. Because there is no need for clamping and squeezing, it is more in line with the actual use environment of the spring and simulates the actual use state for testing, so that the most real and objective test results can be obtained.

[0008] The spring testing fixture involved in the utility model comprises a base, a fixed cover plate, a spring locating pin and a spring locating frame, wherein the spring locating pin is fixedly arranged on the base, and the spring locating frame is movably installed on the base opposite to the spring locating pin, and the fixed cover plate is arranged above the base from above, and is characterized in that the spring testing fixture also comprises a transmission pendulum, a reset member and an angle ruler, wherein the transmission pendulum comprises a pushing pendulum block which directly faces the spring to be tested and presses the spring to be tested, and a hinge hole is provided in the middle of the pushing pendulum block, and the spring locating pin passes through the hinge hole and is fixed to the base, one end of the pushing pendulum block is driven by the transmission pendulum block, and the other end is connected to the reset member, and an angle ruler for adjusting the initial angle of the pushing pendulum block is provided on the side of the pushing pendulum block.

[0009] The spring positioning frame includes a spring limit block, a limit adjustment screw, a limit block adjustment baffle and a baffle screw. The front end of the spring limit block is provided with a U-shaped bracket head. The spring limit block is locked and fixed on the base by the limit adjustment screw in a manner that the U-shaped bracket head supports the spring to be tested. A limit adjustment baffle is provided at the rear end of the spring limit block to support the spring limit block. The baffle screw installs the limit adjustment baffle on the side of the base plate.

[0010] The spring limit block includes an integrally formed U-shaped bracket head, an adjustment slot hole portion in the middle and a tail end clamped on the side of the base, the U-shaped bracket head is attached to the top surface of the base toward the direction of the spring positioning pin, the adjustment slot hole portion connects the U-shaped bracket head attached to the top surface of the base and the tail end attached to the side of the base, and the limit adjustment screw passes through the adjustment slot hole thereon to lock and fix the spring limit block.

[0011] A dial is arranged in the center of the base.

[0012] The transmission pendulum block includes three movable pendulum blocks, including a pulling pendulum block, an intermediate pendulum block and a pushing pendulum block, wherein a portion of the pulling pendulum block extends out of the area covered by the base and the fixed cover plate, the pulling pendulum block drives the intermediate pendulum block, and the intermediate pendulum block drives the pushing pendulum block, and the side surface of the pushing pendulum block at the hinge hole position has an arc-shaped curved portion for accommodating a spring.

[0013] The reset member includes a tension spring and a spring fixing frame, one end of the tension spring is connected to the push pendulum block and the other end is fixed on the spring fixing frame, and the spring fixing frame is fixedly installed on the base.

[0014] An angle ruler is provided on one side of the push-swing block connected to the reset member, and the angle ruler includes an angle swing fan, a scale adjustment screw and a scale indicator needle, wherein the scale adjustment screw adjusts the angle of the angle swing fan, and the scale indicator needle is fixed on the base, and the pointer indicates the angle scale on the angle swing fan.

[0015] The angle swing fan includes a rotating shaft portion, an intermediate rotating pin and a fan-shaped scale portion, wherein the rotating shaft portion is against the side of the pushing swing block, the intermediate rotating pin sets the angle swing fan pin on the base, and an adjustment hole groove is provided on the fan-shaped scale portion, and the scale adjustment screw passes through the adjustment hole groove to determine that the angle swing fan rotates to a suitable position with the rotating pin as the axis and is locked.

[0016] The fixed cover plate is fixed on the base through a fixing pin.

[0017] The spring test fixture involved in the utility model is used to accurately position and clamp the spring to be tested, and is assembled on the equipment of the power source to carry out a quantitative and fixed number of elastic fatigue limit life tests. The positioning is accurate and adjustment is convenient, the auxiliary test is convenient and easy to assemble, and real and accurate data can be obtained, and the operation process is simplified to reduce the difficulty of work.

Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a spring testing fixture involved in the utility model;

[0020] Figure 2 It is a schematic diagram of the disassembled structure of a spring testing fixture involved in the utility model;

[0021] Figure 3 This is a perspective structural diagram of a spring testing fixture involved in the utility model;

[0022] Among them: 10, base; 11, dial; 20, fixed cover; 21, fixed pin; 30, spring positioning pin; 40, spring positioning frame; 41, spring limit block; 411, U-shaped bracket head; 412, adjustment slot hole; 413, tail end; 42, limit adjustment screw; 43, limit block adjustment baffle; 44, baffle screw; 50, transmission pendulum; 51, pull pendulum block; 52, middle pendulum block; 53, push pendulum block; 531, hinge hole; 532, arc-shaped curved part; 60, reset part; 61, tension spring; 62, spring fixing frame 70, angle ruler; 71, angle swing fan; 711, shaft; 712, middle rotating pin; 713, fan-shaped scale; 72, scale adjustment screw; 73, scale indicator needle;

[0023] 100. Spring to be tested. [Specific implementation method]

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Please refer to the attached Figure 1 and attached Figure 2 :in Figure 1 The complete structure diagram of the spring test fixture is shown. Figure 2 , a disassembled diagram of a spring test fixture is shown, wherein the spring test fixture includes a base 10, a fixed cover plate 20, a spring positioning pin 30, and a spring positioning frame 40 mounted on the base 10, and the fixed cover plate 20 is arranged above the base 10 from above, wherein the main components are fixedly arranged on the base 10, and the fixed cover plate 20 is partially protectively covered on the relevant movable components from above.

[0028] The spring testing fixture also includes a transmission pendulum 50, a reset piece 60 and an angle ruler 70, wherein the transmission pendulum 50 includes a pushing pendulum block 53 which is directly opposite to the spring 100 to be tested and presses the spring to be tested, a hinge hole 531 is provided in the middle of the pushing pendulum block 53, a spring locating pin 30 passes through the hinge hole 531 and is fixed on the base 10, one end of the pushing pendulum block 53 is driven by the transmission pendulum block, and the other end is connected to the reset piece 60, and an angle ruler 70 for adjusting the initial angle of the pushing pendulum block 53 is provided on the side of the pushing pendulum block 53.

[0029] The spring positioning frame 40 includes a spring limit block 41, a limit adjustment screw 42, a limit block adjustment baffle 43 and a baffle screw 44. The front end of the spring limit block 41 has a U-shaped bracket head. The spring limit block 41 is locked and fixed on the base 10 by the limit adjustment screw 42 in a manner that the U-shaped bracket head supports the spring 100 to be tested, and a limit adjustment baffle 43 is provided at the rear end of the spring limit block 41 to support the spring limit block 41. The baffle screw 44 installs the limit adjustment baffle 43 on the side of the base plate 10.

[0030] The spring limit block 41 includes an integrally formed U-shaped bracket head 411, an adjustment slot hole portion 412 in the middle, and a tail end 413 clamped on the side of the base. The U-shaped bracket head 411 is attached to the top surface of the base toward the spring positioning pin 30, and the adjustment slot hole portion 412 connects the U-shaped bracket head 411 attached to the top surface of the base and the tail end 413 attached to the side of the base. The limit adjustment screw 42 passes through the adjustment slot hole thereon to lock and fix the spring limit block 41.

[0031] The spring stopper 41 is mainly used to clamp and fix the spring 100 to be tested, so when the spring 100 to be tested is placed in the spring positioning pin 30, the U-shaped bracket head of the spring stopper 41 is pressed against the spring positioning pin 30 where the spring 100 to be tested is placed, and the spring 100 to be tested is limited. Because the tightening position needs to be adjusted according to the placed spring, the position needs to be limited by adjusting the slot portion. The spring stopper 41 can move, and when it moves to a suitable position, tighten the limit adjustment screw 42 to lock the spring stopper 41.

[0032] A dial 11 is provided in the center of the base 10 .

[0033] The transmission pendulum block 50 includes three movable pendulum blocks, including a pulling pendulum block 51, an intermediate pendulum block 52 and a pushing pendulum block 53, wherein a portion of the pulling pendulum block 51 extends out of the area covered by the base and the fixed cover plate, and has a wrench position suitable for pulling / pushing, which can be subsequently used to adapt a power-driven device for pushing.

[0034] The pulling pendulum block 51 drives the middle pendulum block 52, and the middle pendulum block 52 drives the pushing pendulum block 53, and the side surface of the hinge hole 531 of the pushing pendulum block 53 has an arc-shaped curved portion 532 for accommodating a spring therein.

[0035] The reset member 60 includes a tension spring 61 and a spring fixing frame 62. One end of the tension spring 61 is connected to the push pendulum block 53 and the other end is fixed to the spring fixing frame 62. The spring fixing frame 62 is fixedly mounted on the base. The reset member 60 is used to pull the push pendulum block 53 to reset.

[0036] An angle ruler 70 is provided on one side of the push pendulum block 53 connected to the reset member 60, and the angle ruler 70 includes an angle swing fan 71, a scale adjustment screw 72 and a scale indicator needle 73, wherein the scale adjustment screw 72 adjusts the angle of the angle swing fan 71, and the scale indicator needle 73 is fixed on the base 10, and the pointer indicates the angle scale on the angle swing fan 71.

[0037] The angle swing fan 71 includes a rotating shaft portion 711, an intermediate rotating pin 712 and a fan-shaped scale portion 713, wherein the rotating shaft portion 711 is against the side of the push swing block 53, the intermediate rotating pin 712 pins the angle swing fan 71 on the base 10, and an adjustment hole groove is provided in the fan-shaped scale portion 713, and the scale adjustment screw 72 passes through the adjustment hole groove to determine that the angle swing fan 71 rotates to a suitable position with the rotating pin as the axis and is locked.

[0038] In fact, the angle swing fan 71 is rotatably pinned to the base by a turn pin. If it is rotated an angle in the direction of the fan-shaped scale portion 713, the shaft portion 711 will rotate in the opposite direction by the same angle with the middle turn pin 712 as the axis. After rotating to a suitable angle, the angle swing fan 71 is locked at this angle by the scale adjustment screw 72.

[0039] The fixed cover plate 20 is fixed on the base 10 via a fixing pin 21 .

[0040] The spring test fixture involved in the utility model is used to accurately position and clamp the spring to be tested, and is assembled on the equipment of the power source to carry out a quantitative and fixed number of elastic fatigue limit life tests. The positioning is accurate and adjustment is convenient, the auxiliary test is convenient and easy to assemble, and real and accurate data can be obtained, and the operation process is simplified to reduce the difficulty of work.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A spring test fixture, comprising a base, a fixed cover, a spring positioning pin, and a spring positioning frame, wherein the spring positioning pin is fixedly arranged on the base, the spring positioning frame is movably mounted on the base opposite to the spring positioning pin, and the fixed cover is arranged above the base from above, characterized in that: The spring testing fixture also includes a transmission pendulum, a reset piece and an angle ruler, wherein the transmission pendulum includes a pushing pendulum block which is directly opposite to the spring to be tested and presses the spring to be tested, a hinge hole is provided in the middle of the pushing pendulum block, a spring locating pin passes through the hinge hole and is fixed on the base, one end of the pushing pendulum block is driven by the transmission pendulum block, and the other end is connected to the reset piece, and an angle ruler for adjusting the initial angle of the pushing pendulum block is provided on the side of the pushing pendulum block.

2. The spring test fixture according to claim 1, characterized in that: The spring positioning frame includes a spring limit block, a limit adjustment screw, a limit block adjustment baffle and a baffle screw. The front end of the spring limit block is provided with a U-shaped bracket head. The spring limit block is locked and fixed on the base by the limit adjustment screw in a manner that the U-shaped bracket head supports the spring to be tested. A limit adjustment baffle is provided at the rear end of the spring limit block to support the spring limit block. The baffle screw installs the limit adjustment baffle on the side of the base plate.

3. The spring test fixture according to claim 2, characterized in that: The spring limit block includes an integrally formed U-shaped bracket head, an adjustment slot hole portion in the middle and a tail end clamped on the side of the base, the U-shaped bracket head is attached to the top surface of the base toward the direction of the spring positioning pin, the adjustment slot hole portion connects the U-shaped bracket head attached to the top surface of the base and the tail end attached to the side of the base, and the limit adjustment screw passes through the adjustment slot hole thereon to lock and fix the spring limit block.

4. The spring test fixture according to claim 1, characterized in that: A dial is arranged in the center of the base.

5. The spring test fixture according to claim 3, characterized in that: The transmission pendulum block includes three movable pendulum blocks, including a pulling pendulum block, an intermediate pendulum block and a pushing pendulum block, wherein a portion of the pulling pendulum block extends out of the area covered by the base and the fixed cover plate, the pulling pendulum block drives the intermediate pendulum block, and the intermediate pendulum block drives the pushing pendulum block, and the side surface of the pushing pendulum block at the hinge hole has an arc-shaped curved portion for accommodating a spring.

6. The spring test fixture according to claim 5, characterized in that: The reset member includes a tension spring and a spring fixing frame, one end of the tension spring is connected to the push pendulum block and the other end is fixed on the spring fixing frame, and the spring fixing frame is fixedly installed on the base.

7. The spring test fixture according to claim 6, characterized in that: An angle ruler is provided on one side of the push-swing block connected to the reset member, and the angle ruler includes an angle swing fan, a scale adjustment screw and a scale indicator needle, wherein the scale adjustment screw adjusts the angle of the angle swing fan, and the scale indicator needle is fixed on the base, and the pointer indicates the angle scale on the angle swing fan.

8. The spring test fixture according to claim 7, characterized in that: The angle swing fan includes a rotating shaft portion, an intermediate rotating pin and a fan-shaped scale portion, wherein the rotating shaft portion is against the side of the pushing swing block, the intermediate rotating pin sets the angle swing fan pin on the base, and an adjustment hole groove is provided on the fan-shaped scale portion, and the scale adjustment screw passes through the adjustment hole groove to determine that the angle swing fan rotates to a suitable position with the rotating pin as the axis and is locked.

9. The spring test fixture according to any one of claims 1 to 8, characterized in that: The fixed cover plate is fixed on the base through a fixing pin.

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