CN221735941U - A positioning tool for test fixture - Google Patents

Abstract

The utility model belongs to the technical field of test fixtures, and is particularly a positioning tool for test fixtures, including a bottom plate, a mounting ring is provided on the top of the bottom plate, a test bench is provided on the top of the mounting ring, a mounting groove is provided on the top of the test bench, a driving mechanism is provided inside the mounting groove, a positioning plate is provided on the top of the test bench, a top plate is provided on the top of the positioning plate, a fixing mechanism is provided on the top plate, and support rods are provided at the four corners of the bottom of the bottom plate. The utility model sets a driving mechanism, starts a driving motor to drive the gear shaft to rotate, so that the first rack and the second rack move toward the center position of the test bench, so that the positioning plate moves, so that the two corners of the workpiece are clamped and positioned by the positioning plate, and at the same time, the positioning plate can be moved to make it suitable for workpieces of different specifications.

Description

A positioning tool for test fixture

Technical Field

The utility model relates to the technical field of test fixtures, in particular to a positioning tool for a test fixture.

Background Art

A fixture is a large category of tools for carpentry, ironwork, fitter, machinery, electronic control and some other handicrafts. It is mainly used as a tool to assist in controlling position or movement. The fixture can be divided into three categories: process assembly fixtures, project test fixtures and circuit board test fixtures. Test fixtures are specially used to test and experiment the product's functions, power calibration, life, performance, etc.

The prior art has the following problems:

When positioning a workpiece to be tested, the positioning device on the existing test fixture can usually only position workpieces of the same size, and cannot position workpieces of various sizes, resulting in a single specification and a small scope of application when testing.

Utility Model Content

In view of the deficiencies in the prior art, the utility model provides a positioning tool for a test fixture, which solves the problem that when the existing test fixture is used to position the workpiece to be tested, the positioning device on the test fixture can usually only position workpieces of the same size, but cannot position workpieces of multiple sizes, resulting in a single specification and a small scope of application when testing.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning tool for a test fixture, comprising a base plate, a mounting ring is provided on the top of the base plate, a test table is provided on the top of the mounting ring, a mounting groove is provided on the top of the test table, a driving mechanism is provided inside the mounting groove, a positioning plate is provided on the top of the test table, a top plate is provided on the top of the positioning plate, a fixing mechanism is provided on the top plate, and support rods are respectively provided at the four corners of the bottom of the base plate.

As a preferred technical solution of the utility model, the installation groove is inclined and opened between two sets of diagonal corners of the test bench, and a slide bar is fixedly installed on the top of the installation groove, and the slide bar is located above the driving mechanism.

As a preferred technical solution of the utility model, the driving mechanism includes a first rack, a second rack, a gear shaft and a driving motor. The first rack and the second rack are respectively slidably installed on both sides of the mounting groove, and the gear shaft is rotatably installed at the center position of the mounting groove. The first rack and the second rack are meshed and connected with the gear shaft. The driving motor is located inside the mounting ring and fixedly installed at the bottom of the test bench. The bottom of the gear shaft extends to the bottom of the test bench and is fixedly connected to the output end of the driving motor.

As a preferred technical solution of the utility model, the positioning plate is L-shaped, and the positioning plate is provided with two groups. The bottom of the two groups of positioning plates are respectively fixedly installed with a first mounting block and a second mounting block, one end of the first mounting block and the second mounting block are fixedly connected to the first rack and the second rack, and the bottom of the first mounting block and the second mounting block are slidably installed on the slide bar.

As a preferred technical solution of the utility model, the fixing mechanism includes a screw and a pressure block, the screw is threadedly mounted on the top plate, the pressure block is fixedly mounted on the bottom of the screw, and the top of the screw is fixedly mounted with a locking ring.

Compared with the prior art, the utility model provides a positioning tool for a test fixture, which has the following beneficial effects:

1. A positioning tool for a test fixture is provided with a driving mechanism, and a driving motor is started to drive the gear shaft to rotate, so that the first rack and the second rack are moved toward the center position of the test bench, so that the positioning plate is moved, so that the two corners of the workpiece are clamped and positioned by the positioning plate, and at the same time, the movement of the positioning plate makes it suitable for workpieces of different specifications.

2. This kind of positioning tool for a test fixture is provided with a fixing mechanism. After the workpiece to be tested is positioned, the locking ring is rotated so that the screw drives the pressing block to move downward, thereby fixing the pressing block to the circuit board to prevent the circuit board from moving up and down.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional cross-sectional structure of the utility model;

FIG2 is a schematic diagram of the structure of the test bench of the utility model from top view;

FIG3 is a schematic diagram of the three-dimensional structure of the utility model.

In the figure: 1. bottom plate; 2. mounting ring; 3. test bench; 4. mounting groove; 5. first rack; 6. second rack; 7. gear shaft; 8. drive motor; 9. first mounting block; 10. second mounting block; 11. slide bar; 12. positioning plate; 13. top plate; 14. screw; 15. pressure block; 16. locking ring; 17. support rod.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-3. In this embodiment: a positioning tool for a test fixture includes a base plate 1, a mounting ring 2 is provided on the top of the base plate 1, a test table 3 is provided on the top of the mounting ring 2, a mounting groove 4 is provided on the top of the test table 3, and a driving mechanism is provided inside the mounting groove 4 to drive the positioning plate 12 to move; a positioning plate 12 is provided on the top of the test table 3 to position the workpiece to be tested; a top plate 13 is provided on the top of the positioning plate 12, and a fixing mechanism is provided on the top plate 13 to make the workpiece to be tested more stable; support rods 17 are respectively provided at the four corners of the bottom of the base plate 1.

In this embodiment, the mounting groove 4 is obliquely arranged between two sets of diagonal corners of the test bench 3. A slide bar 11 is fixedly installed on the top of the mounting groove 4. The slide bar 11 is located above the driving mechanism. The stability of the first mounting block 9 and the second mounting block 10 when moving is increased by setting a positioning plate 12; the driving mechanism includes a first rack 5, a second rack 6, a gear shaft 7 and a driving motor 8. The first rack 5 and the second rack 6 are respectively slidably installed on both sides of the mounting groove 4, and the gear shaft 7 is rotatably installed at the center position of the mounting groove 4. The first rack 5 and the second rack 6 are meshed and connected with the gear shaft 7. The driving motor 8 is located inside the mounting ring 2 and fixedly installed at the bottom of the test bench 3. The bottom of the gear shaft 7 extends to the bottom of the test bench 3 and is fixedly connected to the output end of the driving motor 8. By starting the driving motor 8, the gear shaft 7 is driven to rotate, so that the first rack 5 and the second rack 6 move toward the center position of the test bench 3, thereby moving the positioning plate 12. , so that the two corners of the workpiece are clamped and positioned by the positioning plate 12, and at the same time, the positioning plate 12 can be moved to make it suitable for workpieces of different specifications; the positioning plate 12 is L-shaped, and the positioning plate 12 is provided with two groups, and the bottoms of the two groups of positioning plates 12 are respectively fixedly installed with the first mounting block 9 and the second mounting block 10, one end of the first mounting block 9 and the second mounting block 10 is fixedly connected to the first rack 5 and the second rack 6, and the bottoms of the first mounting block 9 and the second mounting block 10 are slidably installed on the slide bar 11; the fixing mechanism includes a screw rod 14 and a pressing block 15, the screw rod 14 is threadedly installed on the top plate 13, the pressing block 15 is fixedly installed at the bottom of the screw rod 14, and the top of the screw rod 14 is fixedly installed with a locking ring 16. By setting the fixing mechanism, after the workpiece to be tested is positioned, the locking ring 16 is rotated so that the screw rod 14 drives the pressing block 15 to move downward, thereby fixing the circuit board with the pressing block 15 to prevent the circuit board from moving up and down.

The working principle and use process of the utility model are as follows: the operator places the workpiece to be tested on the top of the test bench 3, starts the driving motor 8 to drive the gear shaft 7 to rotate, thereby moving the first rack 5 and the second rack 6 to the center position of the test bench 3, thereby moving the positioning plate 12, and thus clamping and positioning the two corners of the workpiece through the positioning plate 12, and then rotating the locking ring 16 so that the screw 14 drives the pressure block 15 to move downward, thereby fixing the circuit board with the pressure block 15 to prevent the circuit board from moving up and down.

Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (5)

1. A positioning tool for a test fixture, characterized in that it comprises a base plate (1), a mounting ring (2) is provided on the top of the base plate (1), a test bench (3) is provided on the top of the mounting ring (2), a mounting groove (4) is provided on the top of the test bench (3), a driving mechanism is provided inside the mounting groove (4), a positioning plate (12) is provided on the top of the test bench (3), a top plate (13) is provided on the top of the positioning plate (12), a fixing mechanism is provided on the top plate (13), and support rods (17) are provided at the four corners of the bottom of the base plate (1). 2. A positioning tool for a test fixture according to claim 1, characterized in that: the mounting groove (4) is inclined and opened between two sets of diagonal corners of the test table (3), and a slide bar (11) is fixedly installed on the top of the mounting groove (4), and the slide bar (11) is located above the driving mechanism. 3. A positioning tool for a test fixture according to claim 1, characterized in that: the driving mechanism includes a first rack (5), a second rack (6), a gear shaft (7) and a driving motor (8), the first rack (5) and the second rack (6) are respectively slidably installed on both sides of the mounting groove (4), the gear shaft (7) is rotatably installed at the center position of the mounting groove (4), the first rack (5) and the second rack (6) are meshed and connected with the gear shaft (7), the driving motor (8) is located inside the mounting ring (2) and fixedly installed at the bottom of the test bench (3), and the bottom of the gear shaft (7) extends to the bottom of the test bench (3) and is fixedly connected to the output end of the driving motor (8). 4. A positioning tool for a test fixture according to claim 1, characterized in that: the positioning plate (12) is L-shaped, and the positioning plate (12) is provided with two groups, and the bottoms of the two groups of positioning plates (12) are respectively fixedly installed with a first mounting block (9) and a second mounting block (10), one end of the first mounting block (9) and the second mounting block (10) are fixedly connected to the first rack (5) and the second rack (6), and the bottoms of the first mounting block (9) and the second mounting block (10) are slidably installed on the slide bar (11). 5. A positioning tool for a test fixture according to claim 1, characterized in that: the fixing mechanism includes a screw (14) and a pressure block (15), the screw (14) is threadedly installed on the top plate (13), the pressure block (15) is fixedly installed at the bottom of the screw (14), and a locking ring (16) is fixedly installed on the top of the screw (14).