Wire displacement sensor measurement fixture structure

Abstract

The utility model belongs to LVDT practical new technology relates to a kind of linear displacement sensor measuring tool fixture structure. Including: connecting shaft (1), inner hexagonal cylindrical head screw (2), clamping block (3) and support (4);The utility model passes through design a kind of measuring tool fixture structure, locking, fixed rotor assembly and stator assembly, guaranteeing rotor assembly and stator assembly concentricity, enhancing the stability in product function performance test working process, greatly improve the test accuracy, more will not occur because of the different heart caused by jamming phenomenon, reduce the wear of rotor bar, enhance product service life, improve the reliability of product test.

Description

Technical Field

[0001] This utility model belongs to LVDT utility model technology and relates to a linear displacement sensor measurement tooling fixture structure. Background Technology

[0002] Currently, when conducting overall debugging tests on linear displacement sensors with electrical connectors, it is necessary to ensure the concentricity of the moving and stationary components while fixing the moving and stationary components. This allows the moving component to smoothly enter and exit the stationary component, assisting the entire machine in successfully completing functional performance debugging tests. Summary of the Invention

[0003] The purpose of this invention is to design a fixture structure for measuring linear displacement sensors. Through the cooperation of a connecting shaft, hexagonal head screws, clamping blocks, and a support, the moving and stationary components of the sensor are locked and fixed, preventing misalignment between the moving and stationary components from causing wear on the moving rod and subsequent jamming. This improves the accuracy of functional performance testing.

[0004] The technical solution of this utility model is: a linear displacement sensor measuring fixture structure, including a connecting shaft 1, an internal hexagonal head screw 2, a clamping block 3, and a support 4; the clamping block 3 is installed on the upper end of the support 4 by the internal hexagonal head screw 2, the sensor stator assembly is installed in the clamping block 3, and the bottom end of the support 4 is provided with four through holes for fixed installation with the LVDT automated testing platform; the inner hole in the middle of the connecting shaft 1 is rigidly connected to the moving rod of the sensor moving part assembly by a thread; four grooves are provided on the outer circumference surface to cooperate with the universal joint of the LVDT automated testing platform.

[0005] The connecting shaft 1 has a cylindrical structure with a stepped inner hole in the middle. The two ends of the through hole are designed with threaded holes, and the grooves on the outer circumference are evenly distributed with threads inside the grooves.

[0006] The support 4 is a semi-I-shaped structure with a hole at the top. The clamping block 3 is installed in the hole. The bottom of the support is designed with a concentric circle based on the inner circle size of the clamping part at the top of the support, and is fixedly connected to the LVDT automated testing platform.

[0007] The clamping block 3 is composed of a Z-shaped structure, with a semi-circle in the middle. The two Z-shaped structures and the semi-circle at the top of the support 4 form a circle. The diameter of the circle is 1 ± 0.1 mm larger than the outer diameter of the sensor stator assembly.

[0008] The clamping block 3 has through holes at both ends of its two symmetrical Z-shaped structures, which are fixed by internal hexagonal head screws 2.

[0009] The head of the hexagon socket head cap screw 2 is designed with an internal hexagonal cylindrical head.

[0010] The beneficial effects of this utility model are as follows: By designing a measuring tooling fixture structure, this utility model locks and fixes the moving part assembly and the stationary part assembly, ensuring the concentricity of the moving and stationary parts assembly, enhancing the stability of the product functional performance test process, greatly improving the test accuracy, and preventing jamming caused by misalignment, reducing wear on the moving part rod, extending the product's service life, and improving the reliability of the product test. Attached Figure Description

[0011] Figure 1 Structural diagram of measuring tooling fixture;

[0012] Figure 2 Connecting shaft structure diagram; where: a is the top view and b is the cross-sectional view along the CC direction;

[0013] Figure 3 Structural diagram of an internal hexagonal head screw; where: a is a sectional view along the AA direction, and b is a top view;

[0014] Figure 4 Clamping block structure diagram; where: a is the top view and b is the sectional view along the BB direction;

[0015] Figure 5 Support structure diagram; where: a is the front view, b is the left view, c is the front view from direction P, and d is the top view;

[0016] Among them: 1-connecting shaft, 2-internal hexagonal head screw, 3-clamping block, 4-support. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] See Figure 1 A linear displacement sensor measuring fixture structure includes: a connecting shaft 1, a hexagonal head screw 2, a clamping block 3, and a support 4; the clamping block 3 is installed on the upper end of the support 4 by the hexagonal head screw 2, the sensor stator assembly is installed in the clamping block 3, and the bottom end of the support 4 is provided with four through holes for fixed installation with an LVDT automated testing platform; the inner hole in the middle of the connecting shaft 1 is rigidly connected to the moving rod of the sensor mover assembly by a thread; four grooves are provided on the outer circumference surface to cooperate with the universal joint of the LVDT automated testing platform.

[0019] The connecting shaft 1 has a cylindrical structure with a stepped inner hole in the middle. The two ends of the through hole are designed with threaded holes. The grooves on the outer circumference are evenly distributed and have threads inside, which effectively fixes the platform universal joint. The threaded through hole on the other side effectively fixes the sensor moving part assembly, effectively transmits power and torque, adjusts the angle and gap distance of the moving part assembly on the stationary part assembly, and enhances the stability and reliability of the overall structure.

[0020] Support 4 has a semi-I-shaped structure with a hole at the top. Clamping block 3 is installed in the hole. The bottom of the support is designed with a concentric circle based on the inner circle size of the clamping part at the top, and is fixedly connected to the LVDT automated testing platform. The clamping and positioning design of support 4 is based on the outer circle size of the sensor stator assembly. A reasonable clamping dimension (leaving a 1mm gap) is designed on the top of the support. The hexagonal head screw 2 works in conjunction with the clamping block 3 to achieve the function of fastening the stator assembly. At the same time, the concentric circle at the bottom of the support is designed based on the inner circle size of the clamping part at the top. While being fixedly connected to the LVDT automated testing platform, it ensures the concentricity of the moving and stationary components, ensuring that the moving component can freely enter and exit the moving component under the traction of the universal joint.

[0021] The clamping block 3 consists of two symmetrical Z-shaped structures, with a semi-circular center. The two Z-shaped structures, together with the semi-circle at the top of the support 4, form a circle. The diameter of this circle is 1 ± 0.1 mm larger than the outer diameter of the sensor stator assembly. This effectively tightens the stator assembly. Threaded through holes are designed on both sides for fixing to the support using hexagonal head screws 2.

[0022] The head of the socket head cap screw 2 is designed with a socket head cap, which increases the friction on the workpiece surface, effectively prevents slippage when tightening, and enhances the appearance quality of the workpiece.

[0023] Linear displacement sensor measuring fixture structure and usage method

[0024] 1) First, fix the bracket 4 of the linear displacement sensor measuring fixture onto the LVDT automated testing platform through the positioning hole at the bottom and the internal hexagonal head screw 2.

[0025] 2) Then the product to be measured is installed on the bracket 4 and the product to be measured is fastened by the clamping block 3 and the internal hexagon socket head cap screw 2.

[0026] 3) One side (with only one inner hole) of the connecting shaft 1 is rigidly connected to the moving rod of the moving part of the measured product through a thread; the other side (with four inner holes) has four inner holes that mate with the universal shaft of the LVDT automated test platform, so that the measured product, tooling fixture and test platform are assembled into one unit.

[0027] 4) Start the LVDT automated testing platform. Connecting shaft 1 drives the moving component of the measured product to move up and down, while the stationary component is fixed on support 4, completing the initial adjustment of the product.

Claims

1. A fixture structure for measuring linear displacement sensors, characterized in that, include: The system includes a connecting shaft (1), a hexagonal head screw (2), a clamping block (3), and a support (4). The clamping block (3) is installed on the upper end of the support (4) by the hexagonal head screw (2). The sensor stator assembly is installed inside the clamping block (3). The bottom end of the support (4) has four through holes for fixed installation with the LVDT automated test platform. The inner hole in the middle of the connecting shaft (1) is rigidly connected to the moving rod of the sensor mover assembly by a thread. The outer circumference surface has four grooves that cooperate with the universal shaft of the LVDT automated test platform.

2. The linear displacement sensor measuring fixture structure according to claim 1, characterized in that, The connecting shaft (1) has a cylindrical structure, a stepped inner hole in the middle, threaded holes at both ends of the through hole, and evenly distributed grooves on the outer circumference, with threads inside the grooves.

3. The linear displacement sensor measuring fixture structure according to claim 1, characterized in that, The support (4) is a semi-I-shaped structure with a hole at the top. The clamping block (3) is installed in the hole. The bottom of the support is designed with a concentric circle based on the inner circle size of the clamping part at the top of the support, and is fixedly connected to the LVDT automated testing platform.

4. The linear displacement sensor measuring fixture structure according to claim 1, characterized in that, The clamping block (3) is composed of a zigzag structure. The middle part of the zigzag structure is semicircular. The two zigzag structures and the semicircle at the top of the support (4) form a circle. The diameter of the circle is 1 ± 0.1 mm larger than the outer diameter of the sensor stator assembly.

5. The linear displacement sensor measuring fixture structure according to claim 4, characterized in that, The clamping block (3) has through holes at both ends of its two symmetrical Z-shaped structures, which are fixed by internal hexagonal head screws (2).

6. The linear displacement sensor measuring fixture structure according to claim 4, characterized in that, The head of the internal hexagonal head screw (2) is designed with an internal hexagonal cylindrical head.

Images