U-shaped spring clip elastic force testing system and elastic force testing method

Abstract

The present invention relates to a U-shaped spring clip elastic force testing system and an elastic force testing method, wherein the U-shaped spring clip elastic force testing system comprises: a testing tool, the testing tool comprises a pressure block for applying pressure to the U-shaped clip, a cushion block for locating the deformation size of the U-shaped clip, and a receiving table, the receiving table is provided with a transverse groove for accommodating the U-shaped clip and for inserting the pressure block, and a vertical groove for inserting the cushion block into the opening of the U-shaped clip, the transverse groove and the vertical groove being cross-connected; a hand-operated press for applying pressure to the pressure block; and a detection component connected to the hand-operated press and used to detect the elastic force of the U-shaped clip. The U-shaped spring clip elastic force testing system of the present invention is easy to install, simple to operate, can use existing equipment, has simple tooling, low processing difficulty, and low investment; the elastic force test of the U-shaped spring clip can be performed by using the U-shaped spring clip elastic force testing system of the present invention, and the elastic force value of the U-shaped spring clip compressed under a specified size can be quickly tested.

Description

Technical Field

[0001] The invention belongs to the field of automobile motor component testing, and in particular relates to a U-shaped spring clip elastic force testing system and an elastic force testing method. Background Art

[0002] With the continuous development of the automobile industry, car window glass lifting has bid farewell to the era of manual cranking, and is basically driven by motors. However, the stator part of the motor of some car window lifts on the market still uses a U-shaped spring clip to support the magnetic steel. This method has relatively high requirements on the elastic force of the U-shaped spring clip. Therefore, strict elastic force testing is required before the U-shaped spring clip is put into use.

[0003] Currently, the elastic force of the U-shaped spring clip is verified by indirect means, such as the release force of the magnetic steel after the motor stator is assembled, the strength of the U-shaped spring clip material, etc. However, these verification methods are lagging and greatly affected by the unstable factors of the material, and have the risk of batch defects. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a U-shaped spring clip elastic force testing system and an elastic force testing method, which can conveniently and quickly test the elastic force value of the U-shaped spring clip when it is compressed to a specified size.

[0005] The present invention is implemented by the following technical scheme: A U-shaped spring clip elastic force testing system, comprising:

[0006] A test fixture, the test fixture comprising a pressure block for applying pressure to a U-shaped spring clip, a cushion block for positioning the deformation size of the U-shaped spring clip, and a receiving platform, the receiving platform being provided with a transverse groove for receiving the U-shaped spring clip and for inserting the pressure block, and a vertical groove for inserting the cushion block into an opening of the U-shaped spring clip, the transverse groove and the vertical groove being cross-connected;

[0007] The pressing block is T-shaped and includes a plug plate adapted to the transverse groove and a stopper fixed to the top of the plug plate;

[0008] The middle part of the stopper is provided with a groove for receiving the lower end pressing rod of the arbor press;

[0009] an arbor press for applying pressure to the compact;

[0010] The arbor press comprises a fixed part to which a lower end pressure rod is fixed, a movable part connected to the top of the fixed part and used to push the fixed part, and a handle used to apply a thrust to the movable part, and a limit screw group with adjustable length along the pushing direction is installed on the movable part;

[0011] A detection component connected to the arbor press and used to detect the elastic force of the U-shaped spring clip;

[0012] The detection assembly comprises a push-pull force gauge and a sensor matched with the push-pull force gauge, and the sensor is connected to the lower end pressure rod of the arbor press.

[0013] The U-shaped spring clip elastic force testing system of the present invention is easy to install and simple to operate, can utilize existing equipment, has simple tooling, low processing difficulty and low investment.

[0014] A further improvement of the U-shaped spring clip elastic force testing system of the present invention is that the number of the cushion block is one, and the cushion block is divided into a plurality of sections with different thicknesses; or

[0015] There are multiple cushion blocks, and each cushion block has a different standard thickness.

[0016] The present invention also provides a method for testing the elastic force of a U-shaped spring clip, comprising the following steps:

[0017] S1. Provide a test fixture, the test fixture comprising a pressing block, a cushion block and a receiving platform, the receiving platform being provided with a transverse groove for receiving a U-shaped spring clip and for the pressing block to be vertically inserted downward, and a vertical groove for the cushion block to be inserted into an opening of the U-shaped spring clip;

[0018] Provide a U-shaped spring clip to be tested and a debugging U-shaped spring clip of the same specification as the U-shaped spring clip to be tested;

[0019] S2, insert the debugging U-shaped spring clip into the horizontal groove along the direction of the opening toward the side of the horizontal groove, insert the cushion block from the vertical groove into the opening of the debugging U-shaped spring clip, and insert the pressing block downward into the horizontal groove and contact the debugging U-shaped spring clip;

[0020] S3. Provide arbor press;

[0021] Operating the arbor press to press the pressing block downward and cause the pressing block to squeeze the debugging U-shaped spring clip;

[0022] When the debugging U-shaped spring clip clamps the cushion block, the pressing amount of the arbor press is recorded, the pressing of the arbor press on the pressure block is released, and the cushion block and the debugging U-shaped spring clip are taken out;

[0023] S4, inserting the U-shaped spring clip to be tested into the transverse groove along the direction of the opening toward the side of the transverse groove, and inserting the pressing block downward into the transverse groove and contacting the U-shaped spring clip to be tested;

[0024] S5. providing a detection assembly connected to the arbor press;

[0025] The arbor press is operated according to the pressing amount, and when the arbor press is pressed into place, the detection component is used to detect and read the elastic force value of the U-shaped spring clip to be tested.

[0026] By using the U-shaped spring clip elastic force testing system of the present invention to perform elastic force testing, the elastic force value of the U-shaped spring clip when it is compressed to a specified size can be quickly tested.

[0027] The U-shaped spring clip elastic force testing method of the present invention is further improved in that:

[0028] The detection assembly includes a push-pull force gauge and a sensor matched with the push-pull force gauge, and the sensor is connected to the lower end pressure rod of the arbor press;

[0029] In step S5, the push-pull force gauge is turned on before operating the arbor press, and when the arbor press is pressed down to the desired position, the elastic force value of the push-pull force gauge is read.

[0030] The U-shaped spring clip elastic force testing method of the present invention is further improved in that:

[0031] The arbor press comprises a fixed part to which a lower end pressure rod is fixed, a movable part connected to the top of the fixed part, and a handle connected to the movable part, wherein a limit screw group with adjustable length along the pushing direction is installed on the movable part;

[0032] In step S3, the handle is operated to apply a thrust to the movable part, so that the movable part pushes the fixed part and then pushes the lower end pressure rod to press the pressure block; when the debugging U-shaped spring clip is pressed by the pressure block and clamps the cushion block, the current state of the handle is maintained and the limit screw group is adjusted so that the limit screw group presses the fixed part tightly, and then the handle is loosened, and the limit screw group is reset along with the movable part;

[0033] In step S5, the handle is operated according to the downward pressure until the limit screw assembly presses the fixing portion again, and the elastic force value of the U-shaped spring clip to be tested is detected and read by the detection component.

[0034] The U-shaped spring clip elastic force testing method of the present invention is further improved in that:

[0035] The number of the cushion block is one, and the cushion block is divided into a plurality of sections with different thicknesses; or

[0036] There are multiple cushion blocks, and the thickness of each cushion block is different;

[0037] In step S2, if the number of the cushion block is one, inserting the section of the cushion block with the same thickness as the deformation size of the debugging U-shaped spring clip from the vertical groove into the opening of the debugging U-shaped spring clip;

[0038] If there are multiple cushion blocks, a cushion block with the same thickness as the deformation size of the debugging U-shaped spring clip is selected, and the cushion block is inserted into the opening of the debugging U-shaped spring clip through the vertical slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a three-dimensional structural schematic diagram of the U-shaped spring clip elastic force testing system of the present invention.

[0040] Figure 2 yes Figure 1 An enlarged schematic diagram of the test fixture.

[0041] Figure 3 yes Figure 1 Schematic diagram of the disassembled state of the test tooling.

[0042] Figure 4 It is a flow chart of the elastic force testing method of the U-shaped spring clip of the present invention. DETAILED DESCRIPTION

[0043] At present, the elastic force test of the U-shaped spring clip is basically verified by indirect means, such as verifying the elastic force of the U-shaped spring clip according to the release force of the magnetic steel after the motor stator is assembled, the strength of the U-shaped spring clip material, etc., but these verification methods are all lagging, and are greatly affected by the instability of the material, and have the risk of batch defects. In order to solve the above problems, the present invention provides a U-shaped spring clip elastic force testing system and elastic force testing method, which can conveniently and quickly test the elastic force value of the U-shaped spring clip when it is compressed under a specified size.

[0044] The following is a further description of a U-shaped spring clip elastic force testing system and an elastic force testing method of the present invention in conjunction with the accompanying drawings.

[0045] See also Figure 1 to Figure 3 As shown, a U-shaped spring clip elastic force testing system comprises:

[0046] The test fixture 10 includes a pressure block 12 for applying pressure to the U-shaped spring clip 40, a cushion block 13 for positioning the deformation size of the U-shaped spring clip 40, and a receiving platform 11. The receiving platform 11 is provided with a transverse groove 111 for accommodating the U-shaped spring clip 40 and for the pressure block 12 to be inserted, and a vertical groove 112 for the cushion block 13 to be inserted into the opening of the U-shaped spring clip 40. The transverse groove 111 and the vertical groove 112 are cross-connected.

[0047] An arbor press 20 for applying pressure to the pressing block 12;

[0048] The detection assembly 30 is connected to the arbor press 20 and is used to detect the elastic force of the U-shaped spring clip 40 .

[0049] In this embodiment, the accommodating table 11 is a cubic metal table, a transverse groove 111 is opened inwardly along the width direction at the middle of the top surface of the accommodating table 11, and a vertical groove 112 is opened inwardly along the height direction at the middle of the front surface of the accommodating table 11, and the transverse groove 111 and the vertical groove 112 are cross-connected; the groove width of the transverse groove 111 is slightly larger than the thickness of the U-shaped spring clip 40, and the groove length is slightly larger than the side length of the U-shaped spring clip, so that the position of the U-shaped spring clip 40 placed horizontally in the transverse groove 111 is relatively fixed; the pad 13 is of standard thickness, and the standard thickness is determined according to the deformation size of the U-shaped spring clip to be tested.

[0050] The U-shaped spring clip elastic force testing system of the present invention is easy to install and simple to operate, can utilize existing equipment, has simple tooling, low processing difficulty and low investment.

[0051] In a preferred embodiment, the pressing block 12 is T-shaped, and includes an inserting plate 121 adapted to the size of the transverse groove 111 and a stopper 122 fixed to the top of the inserting plate 121. After the inserting plate 121 is inserted into the transverse groove 111, it contacts the upper side of the U-shaped spring clip 40, and the stopper 122 is used to receive the lower end pressing rod of the arbor press 20. When the arbor press 20 is pressed down, the stopper 122 drives the inserting plate 121 to press the U-shaped spring clip 40 downward, thereby causing the U-shaped spring clip 40 to clamp the cushion block 13.

[0052] In a preferred embodiment, a groove is provided at the top middle position of the stopper 122 for receiving the lower pressure rod of the arbor press 20 , so that the pressure applied by the arbor press 20 to the pressure block 12 can be evenly transmitted to the U-shaped spring clip 40 .

[0053] In a preferred embodiment, the detection assembly 30 includes a push-pull force gauge 32 and a sensor 31 matched with the push-pull force gauge 32 , and the sensor 31 is connected to the lower end pressure rod of the arbor press 20 .

[0054] In this embodiment, the sensor 31 is a force sensing sensor, which is connected to the hand press 20 by bolts. The push-pull force gauge is electrically connected to the sensor 31 to obtain the force sensing information of the sensor 31 and convert it into a numerical value for display.

[0055] In a preferred embodiment, the arbor press 20 includes a fixed portion 21 to which a lower end pressure rod is fixed, a movable portion 22 connected to the top of the fixed portion 21 and used to push the fixed portion 21, and a handle 23 for applying a thrust to the movable portion 22. The movable portion 22 is provided with a limit screw group 24 whose length is adjustable along the pushing direction.

[0056] In this embodiment, when the handle 23 is pressed down, the movable part 22 pushes the fixed part 21 downward and then pushes the lower end pressure rod to press the pressure block 12, wherein the limit screw 24 moves with the movable part 22. When it is pressed down into place, the length of the limit screw group 24 can be adjusted to achieve the purpose of recording the pressing amount of the hand press 20. Specifically, the limit screw group 24 is adjusted to tighten the fixed part 21. When pressing again afterwards, it is only necessary to press until the limit screw group 24 tightens the fixed part 21 again to achieve the same pressing amount as the previous time.

[0057] In a preferred embodiment, the number of the cushion block 13 is one, and the cushion block 13 is divided into a plurality of sections with different thicknesses; or

[0058] There are multiple spacers 13 , and the thickness of each spacer 13 is different.

[0059] The elastic force test of the U-shaped spring clip when it is compressed to different deformation sizes is realized by using the pads 10 of different thickness specifications. No matter which form of the pad 13 is used, it is only necessary to ensure that the thickness of the part inserted into the U-shaped spring clip is the same as the deformation size of the U-shaped spring clip currently to be tested.

[0060] The present invention also provides a method for testing the elastic force of a U-shaped spring clip, see Figures 1 to 4 As shown, the following steps are included:

[0061] S1. Provide a test fixture 10, the test fixture 10 includes a pressing block 12, a cushion block 13 and a receiving platform 11, the receiving platform 11 is provided with a transverse groove 111 for receiving a U-shaped spring clip 40 and for the pressing block 12 to be vertically inserted downward, and a vertical groove 112 for the cushion block 13 to be inserted into the opening of the U-shaped spring clip 40;

[0062] Provide a U-shaped spring clip to be tested and a debugging U-shaped spring clip of the same specification as the U-shaped spring clip to be tested;

[0063] S2, insert the debugging U-shaped spring clip into the horizontal groove along the direction of the opening toward the side of the horizontal groove, insert the cushion block 13 from the vertical groove 112 into the opening of the debugging U-shaped spring clip, and insert the pressing block 12 downward into the horizontal groove 111 and contact the debugging U-shaped spring clip;

[0064] S3, providing an arbor press 20;

[0065] Operate the arbor press 2 to make the arbor press 20 press the pressing block 12 downward and make the pressing block 12 squeeze and debug the U-shaped spring clip;

[0066] When the U-shaped spring clip is adjusted to clamp the cushion block 13, the pressing amount of the arbor press 20 is recorded, the pressing of the arbor press 20 on the pressure block 12 is released, and the cushion block 13 and the adjusted U-shaped spring clip are taken out;

[0067] S4, insert the U-shaped spring clip to be tested into the transverse groove 111 along the direction of the opening toward the side of the transverse groove, and insert the pressing block 12 downward into the transverse groove 111 and contact the U-shaped spring clip to be tested;

[0068] S5, providing a detection assembly 30 connected to the arbor press 20;

[0069] The arbor press 20 is operated according to the pressing amount. When the arbor press 20 is pressed down to the right position, the detection component is used to detect and read the elastic force value of the U-shaped spring clip to be tested.

[0070] By using the U-shaped spring clip elastic force testing system of the present invention to perform elastic force testing, the elastic force value of the U-shaped spring clip when it is compressed to a specified size can be quickly tested.

[0071] In a preferred embodiment:

[0072] The detection assembly 30 includes a push-pull force gauge 32 and a sensor 31 matched with the push-pull force gauge 32, and the sensor 31 is connected to the lower end pressure rod of the arbor press 20;

[0073] In step S5 , the push-pull force gauge 32 is turned on before the arbor press 20 is operated, and when the arbor press 20 is pressed down to the desired position, the current elastic force value of the push-pull force gauge 32 is read.

[0074] In a preferred embodiment:

[0075] The arbor press 20 includes a fixed portion 21 to which a lower end pressure rod is fixed, a movable portion 22 connected to the top of the fixed portion 21, and a handle 23 connected to the movable portion 22. The movable portion 22 is provided with a limit screw group 24 whose length is adjustable along the pushing direction.

[0076] In step S3, the operating handle 23 applies a thrust to the movable part 22, so that the movable part 22 pushes the fixed part 21 and then pushes the lower end pressure rod to press the pressure block 12; when the U-shaped spring clamp is adjusted to press and clamp the cushion block 13, the current downward pressure state of the handle 23 is maintained and the limit screw group 24 is adjusted to make the limit screw group 24 press against the fixed part 21, and then the handle 23 is released, and the limit screw group 24 is reset with the movable part 22;

[0077] In step S5, the handle 23 is operated according to the amount of downward pressure until the limit screw assembly 24 presses the fixing portion again, and then the detection assembly 30 is used to detect and read the elastic force value of the U-shaped spring clip to be tested.

[0078] In this embodiment, recording the pressing amount of the arbor press 20 is achieved by adjusting the length of the limit screw group 24 .

[0079] In a preferred embodiment:

[0080] The number of the cushion block 13 is one, and the cushion block 13 is divided into a plurality of sections with different thicknesses; or

[0081] There are multiple spacers 13 , and each spacer 13 has a different standard thickness.

[0082] In step S2, if the number of the cushion block 13 is one, the section of the cushion block 13 with the same thickness as the deformation size of the debugging U-shaped spring clip is inserted into the opening of the debugging U-shaped spring clip through the vertical groove 112;

[0083] If there are multiple cushion blocks 13 , a cushion block 13 with the same thickness as the deformation size of the debugging U-shaped spring clip is selected, and the cushion block 13 is inserted into the opening of the debugging U-shaped spring clip through the vertical slot 112 .

[0084] The present invention is described in detail above in conjunction with the embodiments of the drawings, and those skilled in the art can make various variations of the present invention according to the above description. Therefore, some details in the embodiments should not constitute limitations on the present invention.

Claims

1. A U-shaped spring clip elastic force testing system, characterized in that: include: A test fixture, the test fixture comprising a pressure block for applying pressure to a U-shaped spring clip, a cushion block for positioning the deformation size of the U-shaped spring clip, and a receiving platform, the receiving platform being provided with a transverse groove for receiving the U-shaped spring clip and for inserting the pressure block, and a vertical groove for inserting the cushion block into an opening of the U-shaped spring clip, the transverse groove and the vertical groove being cross-connected; The pressing block is T-shaped and includes a plug plate adapted to the transverse groove and a stopper fixed to the top of the plug plate; an arbor press for applying pressure to the compact; The middle part of the stopper is provided with a groove for receiving the lower end pressing rod of the arbor press; The arbor press comprises a fixed part to which a lower end pressure rod is fixed, a movable part connected to the top of the fixed part and used to push the fixed part, and a handle used to apply a thrust to the movable part, and a limit screw group with adjustable length along the pushing direction is installed on the movable part; A detection component connected to the arbor press and used to detect the elastic force of the U-shaped spring clip; The detection assembly comprises a push-pull force gauge and a sensor matched with the push-pull force gauge, and the sensor is connected to the lower end pressure rod of the arbor press.

2. The U-shaped spring clip elastic force testing system according to claim 1, characterized in that: The number of the cushion block is one, and the cushion block is divided into a plurality of sections with different thicknesses; or There are multiple cushion blocks, and each cushion block has a different standard thickness.

3. A method for testing the elastic force of a U-shaped spring clip, characterized in that: The steps include: S1. Provide a test fixture, the test fixture comprising a pressing block, a cushion block and a receiving platform, the receiving platform being provided with a transverse groove for receiving a U-shaped spring clip and for the pressing block to be vertically inserted downward, and a vertical groove for the cushion block to be inserted into an opening of the U-shaped spring clip; Provide a U-shaped spring clip to be tested and a debugging U-shaped spring clip of the same specification as the U-shaped spring clip to be tested; S2, insert the debugging U-shaped spring clip into the horizontal groove along the direction of the opening toward the side of the horizontal groove, insert the cushion block from the vertical groove into the opening of the debugging U-shaped spring clip, and insert the pressing block downward into the horizontal groove and contact the debugging U-shaped spring clip; S3. Provide arbor press; Operating the arbor press to press the pressing block downward and cause the pressing block to squeeze the debugging U-shaped spring clip; When the debugging U-shaped spring clip clamps the cushion block, the pressing amount of the arbor press is recorded, the pressing of the arbor press on the pressure block is released, and the cushion block and the debugging U-shaped spring clip are taken out; S4, inserting the U-shaped spring clip to be tested into the transverse groove along the direction of the opening toward the side of the transverse groove, and inserting the pressing block downward into the transverse groove and contacting the U-shaped spring clip to be tested; S5. providing a detection assembly connected to the arbor press; The arbor press is operated according to the pressing amount, and when the arbor press is pressed into place, the detection component is used to detect and read the elastic force value of the U-shaped spring clip to be tested.

4. The method for testing the elastic force of a U-shaped spring clip according to claim 3, characterized in that: The detection assembly includes a push-pull force gauge and a sensor matched with the push-pull force gauge, and the sensor is connected to the lower end pressure rod of the arbor press; In step S5, the push-pull force gauge is turned on before operating the arbor press, and when the arbor press is pressed down to the desired position, the elastic force value of the push-pull force gauge is read.

5. The method for testing the elastic force of a U-shaped spring clip according to claim 3, characterized in that: The arbor press comprises a fixed part to which a lower end pressure rod is fixed, a movable part connected to the top of the fixed part, and a handle connected to the movable part, wherein a limit screw group with adjustable length along the pushing direction is installed on the movable part; In step S3, the handle is operated to apply a thrust to the movable part, so that the movable part pushes the fixed part and then pushes the lower end pressure rod to press the pressure block; when the debugging U-shaped spring clip is pressed by the pressure block and clamps the cushion block, the current state of the handle is maintained and the limit screw group is adjusted so that the limit screw group presses the fixed part tightly, and then the handle is loosened, and the limit screw group is reset along with the movable part; In step S5, the handle is operated according to the downward pressure until the limit screw assembly presses the fixing portion again, and the elastic force value of the U-shaped spring clip to be tested is detected and read by the detection component.

6. The method for testing the elastic force of a U-shaped spring clip according to claim 3, characterized in that: The number of the cushion block is one, and the cushion block is divided into a plurality of sections with different thicknesses; or There are multiple cushion blocks, and the thickness of each cushion block is different; In step S2, if the number of the cushion block is one, inserting the section of the cushion block with the same thickness as the deformation size of the debugging U-shaped spring clip from the vertical groove into the opening of the debugging U-shaped spring clip; If there are multiple cushion blocks, a cushion block with the same thickness as the deformation size of the debugging U-shaped spring clip is selected, and the cushion block is inserted into the opening of the debugging U-shaped spring clip through the vertical slot.

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