A fixture for testing the surface hardness of nuts after impurity removal during machining.

Abstract

This invention discloses a fixture for testing the surface hardness of nuts after cleaning, specifically relating to the preferred technical field. The fixture includes a base, with one end of an electric push rod fixedly connected to the inner wall of the base. A support mechanism is provided on the upper surface of the base. To prevent the nut from excessively compressing the clamping seat horizontally when subjected to pressure, thus causing the clamping seat to shift and reducing the detection effect of the device, the fixture incorporates a support mechanism that, in conjunction with a movable slider and a connecting rod, supports the clamping seat. Simultaneously, the use of a threaded slider allows for more precise adjustment of the support tightness of the connecting rod, preventing the support mechanism from being too loose or too tight, thereby ensuring the support effect of the support mechanism and ultimately guaranteeing the data accuracy of the device when testing the nut strength.

Description

Technical Field

[0001] This invention relates to the field of nut surface hardness testing technology, specifically to a tooling for testing the surface hardness of nuts after impurity removal during nut processing. Background Technology

[0002] As an important component in mechanical equipment, nuts have always been used in conjunction with bolts to form one of the important fastening components. Their strength determines their stability in mechanical equipment. Therefore, in the processing and production of nuts, it is necessary to first remove impurities from the surface of the nut, and then test its surface hardness to check whether it meets the production requirements. Therefore, surface hardness testing fixtures for nut processing are required.

[0003] Existing fixtures for testing the surface hardness of nuts after impurity removal require a clamp to hold the nut in place. However, since the surface hardness of nuts is generally tested by compression, the clamp may shift horizontally after the nut is subjected to downward compression. This can damage the clamp, reduce the accuracy of the device, and consequently decrease its performance. Therefore, we propose a new fixture for testing the surface hardness of nuts after impurity removal. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a tooling for detecting the surface hardness of nuts after impurity removal, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fixture for testing the surface hardness of a nut after impurity removal, comprising a base, one end of an electric push rod fixedly connected to the inner wall of the base, the other end of the electric push rod fixedly connected to the side wall of a clamping seat, and a support mechanism provided on the upper surface of the base, the support mechanism comprising:

[0008] A movable slider is slidably connected to the upper surface of the base. A rod is slidably connected to the inner wall of the movable slider. A pull ring is fixedly installed at the top of the rod, and the top of a return spring is fixedly connected to the lower surface of the pull ring.

[0009] A rotary knob is rotatably mounted on the left outer wall of the movable slider. The left end of a second helical rod is fixedly connected to the right outer wall of the rotary knob, and a threaded slider is threadedly connected to the outer wall of the second helical rod.

[0010] A connecting plate is slidably mounted on the upper surface of the movable slider, and the bottom end of the connecting rod is hinged to the upper surface of the connecting plate.

[0011] Preferably, the bottom end of a support column is fixedly installed on the upper surface of the base, the top end of the support column is fixedly connected to the lower surface of the workbench, a hydraulic cylinder is fixedly installed on the upper surface of the workbench, the output end of the hydraulic cylinder is fixedly connected to the top end of a hydraulic rod, the bottom end of the hydraulic rod is fixedly connected to the upper surface of a transmission plate, and a detection head is fixedly installed on the lower surface of the transmission plate.

[0012] Preferably, the number of clamping seats is set to two sets, and the two sets of clamping seats are symmetrically arranged on the left and right sides of the base with the central axis of the base as the axis of symmetry.

[0013] Preferably, the upper surface of the base has a limiting insertion hole of the same size as the bottom end of the insertion rod.

[0014] Preferably, the clamping seat is provided with a fastening assembly, which includes a drive motor. The drive motor is fixedly installed on the bottom inner wall of the clamping seat. The output end of the drive motor is fixedly connected to the bottom end of a first helical rod. The outer wall of the first helical rod is threadedly connected to a threaded transmission plate. The upper surface of the threaded transmission plate is fixedly connected to the bottom end of a telescopic rod. The top end of the telescopic rod is fixedly connected to the lower surface of a transmission slider. The upper surface of the threaded transmission plate is fixedly connected to the bottom end of a compression spring. The top end of the compression spring is fixedly connected to the lower surface of the transmission slider. The right outer wall of the transmission slider is fixedly connected to a positioning plate.

[0015] Preferably, the telescopic rod is hollow inside, and the diameter of the cavity inside the telescopic rod is larger than the outer diameter of the first helical rod.

[0016] (III) Beneficial Effects

[0017] This invention provides a fixture for testing the surface hardness of nuts after impurity removal during machining. It has the following beneficial effects:

[0018] (1) When the surface hardness testing fixture for nut processing is used, in order to avoid the nut being squeezed excessively in the horizontal direction to the clamping seat, which would cause the clamping seat to shift and reduce the detection effect of the device, a support mechanism is set up, which works with the movable slider and the connecting rod to support the clamping seat. At the same time, by setting up a threaded slider, the operator can make more precise adjustments to the support tightness of the connecting rod, avoiding the support mechanism being too loose or too tight, thereby ensuring the support effect of the support mechanism and ensuring the data accuracy of the device when performing nut strength testing.

[0019] (2) When the surface hardness testing fixture for the nut after cleaning is used, in order to avoid the nut jumping in the vertical direction during the strength test, which would lead to inaccurate test results, a fastening component is set up in conjunction with a threaded transmission plate. This allows the operator to adjust the position of the positioning plate according to different nuts, so that the positioning plate can always exert a good pressing effect on the nut in the vertical direction, thus avoiding jumping or shaking during the strength test and affecting the accuracy of the test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall device structure of the present invention;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the clamping base of the present invention;

[0023] Figure 4 For the present invention Figure 2 A magnified structural diagram of region A in the middle.

[0024] In the diagram: 1. Base; 2. Support column; 3. Workbench; 4. Hydraulic cylinder; 5. Hydraulic rod; 6. Transmission plate; 7. Detection head; 8. Electric push rod; 9. Clamping seat; 10. Fastening assembly; 101. Drive motor; 102. First helical rod; 103. Threaded transmission plate; 104. Telescopic rod; 105. Transmission slider; 106. Compression spring; 107. Positioning plate; 11. Support mechanism; 111. Moving slider; 112. Insert rod; 113. Pull ring; 114. Return spring; 115. Rotary knob; 116. Second helical rod; 117. Threaded slider; 118. Connecting plate; 119. Connecting rod. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-4This invention provides a fixture for testing the surface hardness of nuts after impurity removal, comprising a base 1, a support column 2 with its bottom end fixedly mounted on the upper surface of the base 1, a worktable 3 with its top end fixedly connected to the lower surface of the worktable 3, a hydraulic cylinder 4 with its output end fixedly connected to the top end of a hydraulic rod 5, a transmission plate 6 with its bottom end fixedly connected to the upper surface of the transmission plate 6, a testing head 7 with one end of an electric push rod 8 fixedly connected to the inner wall of the base 1, and the other end of the electric push rod 8 fixedly connected to the side wall of a clamping seat 9. A support mechanism 11 is provided on the upper surface of the base 1, the support mechanism 11 including a movable slider 111 slidably connected to the upper surface of the base 1. On the surface, the inner wall of the movable slider 111 is slidably connected to the insert rod 112, the top end of the insert rod 112 is fixedly installed with the pull ring 113, the bottom end of the return spring 114 is fixedly connected to the lower surface of the pull ring 113, the bottom end of the return spring 114 is fixedly connected to the upper surface of the movable slider 111, the left outer wall of the movable slider 111 is rotatably installed with the rotary knob 115, the right outer wall of the rotary knob 115 is fixedly connected with the left end of the second spiral rod 116, the outer wall of the second spiral rod 116 is threadedly connected with the threaded slider 117, the upper surface of the threaded slider 117 is fixedly connected with the lower surface of the connecting plate 118, the upper surface of the connecting plate 118 is hinged with the bottom end of the connecting rod 119, and the top end of the connecting rod 119 is hinged to the right outer wall of the clamping seat 9.

[0027] In one embodiment of the present invention, the sidewall of the transmission plate 6 is slidably connected to the sidewall of the support column 2. The support column 2 is provided to limit and guide the movement of the transmission plate 6, so that when the hydraulic cylinder 4 drives the hydraulic rod 5, the transmission plate 6 can only move downward in the vertical direction along the outer wall of the support column 2. In addition, two sets of clamping seats 9 are provided, and the two sets of clamping seats 9 are symmetrically arranged on the left and right sides of the base 1 with the central axis of the base 1 as the axis of symmetry, thereby realizing the function of clamping and fixing the nut on the base 1. At the same time, the side of the clamping seats 9 that is close to each other is set as an arc surface, so that the clamping seats 9 can better fit with the nut to improve the clamping and fixing effect of the nut. Furthermore, the upper surface of the base 1 is provided with a limiting insertion hole of the same size as the bottom end of the insertion rod 112, so that when the insertion rod 112 is inserted into the limiting insertion hole, the moving slider 111 and the base 1 remain relatively fixed. In addition, the return spring 114 is sleeved on the insertion rod 11. On the outside of 2, the right end of the second helical rod 116 is rotatably connected to the inner wall of the movable slider 111. Specifically, the upper and lower surfaces of the threaded slider 117 are slidably connected to the inner wall of the movable slider 111 in the horizontal direction. Specifically, when the second helical rod 116 rotates, the threaded slider 117 moves horizontally along the inner wall of the movable slider 111. Furthermore, a rectangular groove with a width equal to the width of the connection between the threaded slider 117 and the connecting plate 118 is provided on the upper surface of the movable slider 111. At the same time, the connecting plate 118 is slidably connected to the upper surface of the movable slider 111, so that the threaded slider 117 can drive the connecting plate 118 to move horizontally along the upper surface of the movable slider 111. Meanwhile, two sets of support mechanisms 11 are provided, and the two sets of support mechanisms 11 are symmetrically arranged on both sides of the clamping seat 9 with the central axis of the clamping seat 9 as the axis of symmetry, so that the clamping seat 9 can obtain a better auxiliary support effect.

[0028] In addition, to ensure the nut is stable in the vertical direction during testing, a fastening assembly 10 is provided inside the clamping seat 9. The fastening assembly 10 includes a drive motor 101, which is fixedly installed on the bottom inner wall of the clamping seat 9. The output end of the drive motor 101 is fixedly connected to the bottom end of the first helical rod 102. The outer wall of the first helical rod 102 is threadedly connected to a threaded transmission plate 103. The upper surface of the threaded transmission plate 103 is fixedly connected to the bottom end of a telescopic rod 104. The top end of the telescopic rod 104 is fixedly connected to the lower surface of a transmission slider 105. The upper surface of the threaded transmission plate 103 is fixedly connected to the bottom end of a compression spring 106. The top end of the compression spring 106 is fixedly connected to the lower surface of the transmission slider 105. The right outer wall of the transmission slider 105 is fixedly connected to a positioning plate 107.

[0029] In an embodiment of the present invention, the left and right outer walls of the threaded transmission plate 103 are slidably connected to the inner wall of the clamping seat 9. Specifically, when the drive motor 101 drives the first spiral rod 102 to rotate, the threaded transmission plate 103 moves vertically along the inner wall of the clamping seat 9. Furthermore, the telescopic rod 104 is hollow inside, and the diameter of the cavity inside the telescopic rod 104 is larger than the outer diameter of the first spiral rod 102, so that the telescopic rod 104 and the first spiral rod 102 will not interfere with each other during operation, thereby ensuring the stability of the device during use. Similarly, the inner wall of the transmission slider 105 is provided with a circular through hole with a diameter larger than the outer diameter of the first spiral rod 102. Furthermore, the first spiral rod 102 passes through the circular through hole. In addition, the compression spring 106 is sleeved on the outside of the telescopic rod 104. By limiting the deformation direction of the telescopic rod 104 through the compression spring 106, the compression spring 106 always maintains the deformation direction in the vertical direction when it is squeezed or stretched, avoiding the phenomenon of horizontal deflection when squeezed. This ensures that the compression spring 106 can always provide a stable transmission effect for the transmission slider 105. Furthermore, the positioning plate 107 is set to the same arc surface as the side of the clamping seat 9, so that the positioning plate 107 can better transmit with the nut and will not affect the compression detection effect of the detection head 7.

[0030] In this invention, during use, after the operator secures the nut, the hydraulic cylinder 4 is activated, in conjunction with the hydraulic rod 5, causing the transmission plate 6 to drive the detection head 7 downwards, thereby performing a strength test on the surface of the nut on the base 1. Furthermore, to prevent the nut from excessively compressing the clamping seat 9 in the horizontal direction when under pressure, which could cause the clamping seat 9 to shift and reduce the detection effect of the device, a support mechanism 11 is provided, working in conjunction with the movable slider 111 and the connecting rod 119 to support the clamping seat 9. Simultaneously, a threaded slider 117 is provided to allow the operator to further adjust the support tightness of the connecting rod 119. Precise adjustments are made to prevent the support mechanism 11 from being too loose or too tight, thereby ensuring the support effect of the support mechanism 11 and the data accuracy of the device when performing nut strength testing. In addition, to prevent the nut from jumping in the vertical direction during strength testing, which would lead to inaccurate test results, a fastening component 10 is provided, which works in conjunction with the threaded transmission plate 103. This allows the operator to adjust the position of the positioning plate 107 according to different nuts, so that the positioning plate 107 can always provide a good pressing effect on the nut in the vertical direction, preventing it from jumping or shaking during the strength testing process, which would affect the accuracy of the test data.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixture for testing the surface hardness of nuts after impurity removal, comprising a base (1), wherein one end of an electric push rod (8) is fixedly connected to the inner wall of the base (1), and the other end of the electric push rod (8) is fixedly connected to the side wall of a clamping seat (9), characterized in that: The upper surface of the base (1) is provided with a support mechanism (11), the support mechanism (11) including: A movable slider (111) is slidably connected to the upper surface of the base (1). A rod (112) is slidably connected to the inner wall of the movable slider (111). A pull ring (113) is fixedly installed at the top of the rod (112). The top of a return spring (114) is fixedly connected to the lower surface of the pull ring (113). A rotary knob (115) is rotatably mounted on the left outer wall of the movable slider (111). The right outer wall of the rotary knob (115) is fixedly connected to the left end of the second helical rod (116). The outer wall of the second helical rod (116) is threadedly connected to a threaded slider (117). A connecting plate (118) is slidably mounted on the upper surface of the movable slider (111), and the bottom end of the connecting rod (119) is hinged to the upper surface of the connecting plate (118). The clamping seats (9) are provided in two sets, and the two sets of clamping seats (9) are symmetrically arranged on the left and right sides of the base (1) with the central axis of the base (1) as the axis of symmetry. The clamping seats (9) are provided with a fastening assembly (10) inside. The fastening assembly (10) includes a drive motor (101). The drive motor (101) is fixedly installed on the bottom inner wall of the clamping seat (9). The output end of the drive motor (101) is fixedly connected to the bottom end of the first spiral rod (102). The outer side of the first spiral rod (102) is... A threaded transmission plate (103) is connected to the wall thread. The bottom end of a telescopic rod (104) is fixedly connected to the upper surface of the threaded transmission plate (103). The bottom surface of a transmission slider (105) is fixedly connected to the top end of the telescopic rod (104). The bottom end of a compression spring (106) is fixedly connected to the upper surface of the threaded transmission plate (103). The top end of the compression spring (106) is fixedly connected to the bottom surface of the transmission slider (105). A positioning plate (107) is fixedly connected to the right outer wall of the transmission slider (105).

2. The tooling for detecting the surface hardness of a nut after impurity removal during machining, as described in claim 1, is characterized in that: The bottom end of the support column (2) is fixedly installed on the upper surface of the base (1). The top end of the support column (2) is fixedly connected to the lower surface of the workbench (3). The upper surface of the workbench (3) is fixedly installed with a hydraulic cylinder (4). The output end of the hydraulic cylinder (4) is fixedly connected to the top end of the hydraulic rod (5). The bottom end of the hydraulic rod (5) is fixedly connected to the upper surface of the transmission plate (6). The lower surface of the transmission plate (6) is fixedly installed with a detection head (7).

3. The tooling for testing the surface hardness of a nut after impurity removal during machining, as described in claim 1, is characterized in that: The upper surface of the base (1) is provided with a limiting insertion hole of the same size as the bottom end of the insertion rod (112).

4. The tooling for testing the surface hardness of a nut after impurity removal during machining, as described in claim 1, is characterized in that: The telescopic rod (104) is hollow inside, and the diameter of the cavity inside the telescopic rod (104) is larger than the outer diameter of the first spiral rod (102).

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