Precise measurement jig

Abstract

The utility model relates to a precision measuring jig, which aims to solve the technical problem that the replacement efficiency is low due to the fact that a probe plate and a piston rod of a hydraulic cylinder are fixed and need a certain time to be detached, and comprises a measuring jig case and a detection structure, the detection structure is arranged on the top side of the measuring jig case; the detection structure comprises a bottom plate, a positioning column, a top plate and a detection probe plate; the bottom plate is arranged on the top side of the measuring jig case; the four positioning columns are arranged on the bottom side of the bottom plate in a rectangular array; the positioning column is matched with the hole in the top side of the measuring jig case in an inserting manner; the top plate is movably arranged above the bottom plate through four rebound assemblies which are distributed in a rectangular array; the detection probe plate is fixedly arranged on the bottom side of the top plate; the circuit board detection device has the advantages that a corresponding detection structure can be quickly replaced according to the type of a circuit board to be measured, and the replacement process is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring jigs, in particular to a precision measuring jig. Background Art

[0002] FCT test fixtures are mainly used to perform functional tests on products, such as voltage, current, power, and frequency. FCT test fixtures can test semi-finished products or finished products. Nowadays, the control mode of FCT test fixtures is mainly fully automatic. The test speed of this type of control fixture is very fast and the test data is accurate.

[0003] When the FCT test fixture measures the circuit board, the probe plate connected to the hydraulic cylinder piston rod is moved down to connect the placed circuit board interface and energize it for measurement. There are many types of circuit boards used for measurement, and different types of circuit boards correspond to different probe plates. After changing the type of circuit board to be measured, the probe plate needs to be replaced accordingly. The probe plate is fixed to the hydraulic cylinder piston rod, and it takes a certain amount of time to remove it, resulting in low replacement efficiency.

[0004] In view of this, we propose a precision measuring fixture. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a precision measuring fixture to solve the technical problem that the current probe plate and the hydraulic cylinder piston rod are fixed, which requires a certain amount of time to disassemble and makes the replacement efficiency relatively low.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a precision measuring fixture, including a measuring fixture chassis, a frame is arranged at the top rear end of the measuring fixture chassis, a hydraulic cylinder body is arranged on the frame, and also includes a detection structure;

[0007] The detection structure is arranged on the top side of the measuring fixture chassis; wherein the detection part of the detection structure is extruded and matched with the piston rod of the hydraulic cylinder body.

[0008] Preferably, the detection structure comprises a bottom plate, a positioning column, a top plate and a detection probe plate;

[0009] The bottom plate is arranged on the top side of the measuring jig chassis; four positioning posts are arranged in a rectangular array on the bottom side of the bottom plate; wherein the positioning posts are plugged into the openings on the top side of the measuring jig chassis; the top plate is movably arranged above the bottom plate through four rebound components distributed in a rectangular array; wherein the top side of the top plate corresponds to the piston rod of the hydraulic cylinder body; the detection probe plate is fixedly arranged on the bottom side of the top plate; wherein the detection probe plate corresponds to the electric plate slot opened on the top side of the bottom plate.

[0010] Preferably, the insertion end of the positioning column is configured to be truncated into a cone shape, and the positioning column is adapted to the opening on the top side of the measuring fixture chassis.

[0011] Preferably, the rebound assembly comprises a guide rod and a spring;

[0012] The guide rod is passed through the top plate; wherein the inner end of the guide rod is fixed to the bottom plate; and the spring is sleeved on the guide rod between the top plate and the bottom plate.

[0013] Preferably, the rebound assembly further includes a limit block;

[0014] The limit block is fixedly arranged at the outer end of the guide rod; wherein the diameter of the limit block is larger than the diameter of the opening on the top plate through which the guide rod passes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model has the advantages of quickly replacing the corresponding detection structure according to the type of circuit board to be measured by setting the detection structure, and the replacement process is simpler and more convenient, which solves the problem that the probe plate and the hydraulic cylinder piston rod are fixed, which makes it take a certain amount of time to disassemble and the replacement efficiency is relatively low.

[0017] 2. The utility model has the advantage that the top plate and the detection probe plate can rebound and reset after being squeezed and moved downward to measure the circuit board by arranging the guide rod and the spring, so that the measured circuit board can be easily taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the detection structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the rebound component of the utility model;

[0022] In the figure: 1. Measuring fixture chassis; 2. Detection structure; 3. Frame; 4. Hydraulic cylinder body;

[0023] 201, bottom plate; 202, positioning column; 203, top plate; 204, detection probe plate; 205, rebound component;

[0024] 2011, electric plate slot;

[0025] 2051, guide rod; 2052, spring; 2053, limit block. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] Example 1: Precision measuring fixture, see Figures 1 to 4 , including a measuring jig chassis 1, a frame 3 is arranged at the top rear end of the measuring jig chassis 1, a hydraulic cylinder body 4 is arranged on the frame 3, and also includes a detection structure 2; the detection structure 2 is arranged on the top side of the measuring jig chassis 1; wherein the detection part of the detection structure 2 is squeezed and matched with the piston rod of the hydraulic cylinder body 4. By setting the detection structure 2, the utility model has the advantages of quickly replacing the corresponding detection structure 2 according to the type of the circuit board to be measured, and the replacement process is simpler and more convenient, which solves the problem that the probe plate and the hydraulic cylinder piston rod are fixed, which requires a certain amount of time to disassemble and makes the replacement efficiency relatively low.

[0028] Specifically, the detection structure 2 includes a bottom plate 201, a positioning column 202, a top plate 203 and a detection probe plate 204; the bottom plate 201 is arranged on the top side of the measuring jig chassis 1; four positioning columns 202 are arranged in a rectangular array on the bottom side of the bottom plate 201; wherein the positioning columns 202 are plugged into and matched with the openings on the top side of the measuring jig chassis 1; the top plate 203 is movably arranged above the bottom plate 201 through four rebound components 205 distributed in a rectangular array; wherein the top side of the top plate 203 corresponds to the piston rod of the hydraulic cylinder body 4; the detection probe plate 204 is fixedly arranged on the bottom side of the top plate 203; wherein the detection probe plate 204 corresponds to the electric plate slot 2011 opened on the top side of the bottom plate 201. The utility model has the advantages that the detection structure 2 can be independently arranged, is not fixed to the piston rod of the hydraulic cylinder body 4, and is easy to replace by arranging the bottom plate 201, the positioning column 202, the top plate 203 and the detection probe plate 204.

[0029] Furthermore, the insertion end of the positioning column 202 is configured to be truncated, and the positioning column 202 is adapted to the top opening of the measuring fixture chassis 1. The positioning column 202 is installed by plugging, which is convenient for replacement, and the insertion end of the truncated positioning column 202 is easier to insert into the top opening of the measuring fixture chassis 1.

[0030] Furthermore, the rebound component 205 includes a guide rod 2051 and a spring 2052; the guide rod 2051 is inserted into the top plate 203; wherein the inner end of the guide rod 2051 is fixedly mounted on the bottom plate 201; the spring 2052 is sleeved on the guide rod 2051 between the top plate 203 and the bottom plate 201, and the two ends of the spring 2052 are respectively fixedly connected to the top plate 203 and the bottom plate 201, and the elastic coefficient of the spring 2052 is selected by the technicians of this profession according to the actual situation. The utility model has the advantages of rebounding and resetting the top plate 203 and the detection probe plate 204 after being squeezed down to measure the circuit board, which is convenient for taking out the measured circuit board by setting the guide rod 2051 and the spring 2052.

[0031] It is worth noting that the rebound assembly 205 also includes a limit block 2053; the limit block 2053 is fixedly arranged at the outer end of the guide rod 2051; wherein the diameter of the limit block 2053 is larger than the diameter of the opening on the top plate 203 through which the guide rod 2051 passes. The utility model has the advantage of limiting the highest moving position of the top plate 203 and preventing the top plate 203 from detaching by setting the limit block 2053.

[0032] Working principle: When using the device of the utility model, according to the type of circuit board to be measured, the corresponding detection structure 2 is selected, the bottom plate 201 is placed on the top side of the measuring fixture chassis 1, and the positioning column 202 is correspondingly inserted into the top opening of the measuring fixture chassis 1, and then the bottom plate 201 is limited. At this time, the top plate 203 corresponds to the piston rod of the hydraulic cylinder body 4, and the detection probe plate 204 connector is connected to the wire; the circuit board to be measured is placed in the circuit board slot 2011, and the hydraulic cylinder body 4 pushes the piston rod to drive the top plate 203 to move down, and the top plate 203 moves down along the guide rod 2051, and the spring 2052 is compressed until the probe on the detection probe plate 204 is inserted into the terminal row of the circuit board in the circuit board slot 2011, and then the circuit board is measured. After the measurement is completed, the hydraulic cylinder body 4 pushes the piston rod to move up, and under the action of the spring 2052, the top plate 203 and the detection probe plate 204 move up and away from the circuit board, and the measured circuit board is taken out. When changing the type of circuit board, the previous detection structure 2 is removed and replaced with the corresponding detection structure 2 for continued use.

[0033] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A precision measuring jig, comprising a measuring jig chassis (1), wherein a frame (3) is arranged at the top rear end of the measuring jig chassis (1), and a hydraulic cylinder body (4) is arranged on the frame (3), characterized in that: Also includes: A detection structure (2) is arranged on the top side of the measuring fixture chassis (1); Wherein, the detection part of the detection structure (2) is extruded and matched with the piston rod of the hydraulic cylinder body (4); The detection structure (2) comprises: A bottom plate (201) arranged on the top side of the measuring fixture chassis (1); A plurality of positioning posts (202) are arranged in a rectangular array on the bottom side of the bottom plate (201); The positioning column (202) is plug-fitted into the top opening of the measuring fixture chassis (1); A top plate (203) is movably disposed above the bottom plate (201) via four rebound components (205) distributed in a rectangular array; Wherein, the top side of the top plate (203) corresponds to the piston rod of the hydraulic cylinder body (4); A detection probe plate (204) is fixedly arranged on the bottom side of the top plate (203); Wherein, the detection probe plate (204) corresponds to the electric plate slot (2011) opened on the top side of the bottom plate (201); The rebound assembly (205) comprises: A guide rod (2051) is provided on the top plate (203); Wherein, the inner end of the guide rod (2051) is fixedly mounted on the bottom plate (201); The spring (2052) is sleeved on the guide rod (2051) between the top plate (203) and the bottom plate (201).

2. The precision measuring jig according to claim 1, characterized in that: The insertion end of the positioning column (202) is configured to be truncated into a cone shape, and the positioning column (202) is adapted to the top opening of the measuring fixture chassis (1).

3. The precision measuring jig according to claim 1, characterized in that: The rebound assembly (205) further comprises: A limit block (2053) is fixedly mounted on the outer end of the guide rod (2051); Wherein, the diameter of the limit block (2053) is larger than the diameter of the opening on the top plate (203) through which the guide rod (2051) passes.

Images