Flash test loading jig

Abstract

The utility model discloses a flash test loading jig, which comprises a workbench, a shell vertically arranged on the workbench, a mounting frame arranged on one side of the shell, two limiting strips arranged on one side, opposite to the shell, of the mounting frame in a vertically spaced manner, and a rack fixedly arranged between the two limiting strips, a sliding sleeve shell is arranged on the circumferential outer wall of the rack in a sleeving mode, a light source bearing plate used for placing a workpiece is located on one side of the rack and installed on the upper surface of the sliding sleeve shell, a gear meshed with the rack is rotationally installed in the sliding sleeve shell, and a driving mechanism used for driving the gear to rotate is arranged below the light source bearing plate. The driving mechanism comprises a second motor and a worm in meshed connection with the gear, and the second motor located below the light source bearing plate is connected with the worm. According to the flash measurement loading jig, the height of the light source bearing plate can be adjusted, so that the size of a workpiece adapts to the shooting distance, and the measurement accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of load-carrying fixtures, and particularly relates to a flash measurement load-carrying fixture. Background Technique

[0002] At present, a flash measurement imaging instrument is used to measure the size of a workpiece. The flash measurement imaging instrument in the prior art includes a measurement device and a fixture for placing the workpiece. The fixture generally includes a light source carrier plate, that is, a load platform glass and a light source are arranged on the carrier platform. When in use, the light source emits light, which passes through the load platform glass and irradiates the workpiece to be measured placed on the load platform glass. The contour information of the workpiece to be measured is acquired and received by the measurement device. Thus, the flash measurement load-carrying fixture can measure geometric quantities such as the length, width, height, hole distance, and spacing of the appearance shape of the workpiece to be measured, greatly simplifying the batch detection process.

[0003] However, the light source carrier plate is generally fixedly arranged, and the distance between the main lens and the carrier plate is a fixed value. When a small-sized workpiece is placed on the light source carrier plate for shooting, the area occupied by the workpiece is small, resulting in unclear contours and affecting the measurement results. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a flash measurement load-carrying fixture, which can adjust the height of the light source carrier plate so that the size of the workpiece is adapted to the shooting distance, which is beneficial to improving the measurement accuracy.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is: a flash measurement load-carrying fixture, including: a workbench, a housing vertically arranged on the workbench, an installation frame is arranged on one side of the housing, two limiting strips are arranged on the side of the installation frame opposite to the housing at upper and lower intervals, and a rack is fixedly installed between the two limiting strips;

[0006] A sliding sleeve is sleeved on the outer wall of the rack, a light source carrier plate for placing the workpiece is installed on the upper surface of the sliding sleeve on one side of the rack, a gear meshing with the rack is rotatably installed inside the sliding sleeve, and a driving mechanism for driving the gear to rotate is arranged below the light source carrier plate.

[0007] The further improved scheme in the above technical scheme is as follows:

[0008] 1. In the above scheme, the driving mechanism includes: a second motor, a worm meshingly connected with the gear, and the second motor below the light source carrier plate is connected with the worm.

[0009] 2. In the above solution, the output shaft of the second motor is connected with a coupling having a short shaft. A shaft sleeve is arranged between the short shaft and the worm, and this shaft sleeve is fixedly connected with the sliding sleeve housing.

[0010] 3. In the above solution, a fixed bent rod is arranged between the second motor and the shaft sleeve.

[0011] 4. In the above solution, a fixed bar is arranged between the limiting strip and the mounting bracket.

[0012] 5. In the above solution, a rotating shaft is arranged between the gear and the sliding sleeve housing.

[0013] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0014] In the flash measurement load-carrying jig of the present utility model, a rack is fixedly installed between the limiting strips. A sliding sleeve housing connected with a light source carrier plate is sleeved on the outer wall of the circumference of the rack. A gear meshing with the rack is rotatably installed below the light source carrier plate and inside the sliding sleeve housing. A driving mechanism for driving the gear to rotate is arranged on one side of the sliding sleeve housing. By driving the gear to rotate through the driving mechanism, the sliding sleeve housing can be driven to move along the rack, so as to adjust the height of the light source carrier plate, make the size of the workpiece adapt to the shooting distance, and is beneficial to improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 is the overall structural schematic diagram of the flash measurement load-carrying jig of the present utility model;

[0016] Attached Figure 2 is the partial structural schematic diagram of the flash measurement load-carrying jig of the present utility model;

[0017] Attached Figure 3 is the enlarged schematic diagram at A of the present utility model attached Figure 1 ;

[0018] Attached Figure 4 is the enlarged schematic diagram at B of the present utility model attached Figure 2 .

[0019] In the above drawings: 1. Workbench; 2. Housing; 3. Mounting bracket; 4. Light source carrier plate; 5. Fixed bar; 6. Limiting strip; 7. Worm; 8. Shaft sleeve; 9. Coupling; 10. Second motor; 11. Fixed clamping plate; 12. Fixed bent rod; 13. Short shaft; 14. Gear; 15. Rotating shaft; 16. Sliding sleeve housing; 17. Rack; 18. Chute; 19. Protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following specific embodiments can further clearly understand the present patent, but they do not limit the present patent.

[0021] Embodiment 1: A flash measurement carrier fixture, comprising: a workbench 1, a housing 2 vertically arranged on the workbench 1, an installation frame 3 is arranged on one side of the housing 2, two limiting bars 6 are arranged on the side of the installation frame 3 opposite to the housing 2 at upper and lower intervals, and a rack 17 is fixedly installed between the two limiting bars 6;

[0022] During use, start the second motor to drive the short shaft to rotate, drive the worm to rotate, and the worm meshes with the gear, so that the gear rolls along the surface of the rack and drives the sliding sleeve to slide along the surface of the rack, thereby driving the up and down movement of the light source carrier plate;

[0023] A sliding sleeve 16 is sleeved on the outer wall of the circumference of the rack 17, a light source carrier plate 4 for placing workpieces is installed on the upper surface of the sliding sleeve 16 on one side of the rack 17, a gear 14 meshing with the rack 17 is rotatably installed inside the sliding sleeve 16, and a driving mechanism for driving the gear 14 to rotate is arranged below the light source carrier plate 4.

[0024] The coupling and shaft sleeve between the second motor and the worm greatly improve the stability of the rotation of the worm, ensure the stable meshing of the worm and the gear, and avoid the situation of the worm disengaging;

[0025] The above-mentioned driving mechanism includes: a second motor 10, a worm 7 meshingly connected with the gear 14, and the second motor 10 below the light source carrier plate 4 is connected to the worm 7.

[0026] The output shaft of the second motor 10 is connected with a coupling 9 having a short shaft 13, a shaft sleeve 8 is arranged between the short shaft 13 and the worm 7, and this shaft sleeve 8 is fixedly connected with the sliding sleeve 16.

[0027] A fixing bar 5 is arranged between the limiting bar 6 and the installation frame 3.

[0028] A rotating shaft 15 is arranged between the gear 14 and the sliding sleeve 16.

[0029] A chute 18 is opened along the length direction on the side wall of the rack 17, and the sliding sleeve 16 has a protrusion 19 matching with the chute 18.

[0030] Embodiment 2: A flash measurement carrier fixture, comprising: a workbench 1, a housing 2 vertically arranged on the workbench 1, an installation frame 3 is arranged on one side of the housing 2, two limiting bars 6 are arranged on the side of the installation frame 3 opposite to the housing 2 at upper and lower intervals, and a rack 17 is fixedly installed between the two limiting bars 6;

[0031] By driving the gear to rotate through the driving mechanism, the sliding sleeve can be driven to move along the rack, so that the height of the light source carrier plate can be adjusted, making the size of the workpiece suitable for the shooting distance, which is beneficial to improving the measurement accuracy;

[0032] A sliding sleeve 16 is sleeved on the outer wall of the rack 17 in the circumferential direction. A light source carrier plate 4 for placing a workpiece is installed on the upper surface of the sliding sleeve 16 on one side of the rack 17. A gear 14 meshing with the rack 17 is rotatably installed inside the sliding sleeve 16. A driving mechanism for driving the gear 14 to rotate is arranged below the light source carrier plate 4.

[0033] The above driving mechanism includes: a second motor 10 and a worm 7 meshingly connected with the gear 14. The second motor 10 located below the light source carrier plate 4 is connected with the worm 7.

[0034] The output shaft of the second motor 10 is connected with a coupling 9 having a short shaft 13. A shaft sleeve 8 is arranged between the short shaft 13 and the worm 7. This shaft sleeve 8 is fixedly connected with the sliding sleeve 16.

[0035] A fixed bent rod 12 is arranged between the second motor 10 and the shaft sleeve 8; one end of the fixed bent rod 12 close to the second motor 10 is connected with a fixed clamping plate 11, and the second motor 10 is located between the two fixed clamping plates 11.

[0036] A fixed bar 5 is arranged between the limiting bar 6 and the mounting bracket 3; a curved surface is arranged on the side of the fixed bar 5 opposite to the mounting bracket 3.

[0037] A chute 18 is opened in the side wall of the rack 17 along the length direction, and the sliding sleeve 16 has a protrusion 19 matched with the chute 18.

[0038] The working principle is as follows:

[0039] During use, the second motor is started to drive the short shaft to rotate, and drive the worm to rotate. The worm meshes with the gear, so that the gear rolls along the surface of the rack, and drives the sliding sleeve to slide along the surface of the rack, thereby driving the up and down movement of the light source carrier plate;

[0040] The coupling and shaft sleeve between the second motor and the worm greatly improve the stability of the rotation of the worm, ensure the stable meshing of the worm and the gear, and avoid the situation of the worm disengaging.

[0041] When the above flash measurement carrier fixture is adopted, it can drive the gear to rotate through the driving mechanism, drive the sliding sleeve to move along the rack, so that the height of the light source carrier plate can be adjusted, making the size of the workpiece suitable for the shooting distance, which is beneficial to improving the measurement accuracy.

[0042] The above embodiments are only used to illustrate the technical concept and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A flash test fixture, comprising: A workbench (1), and a shell (2) vertically arranged on the workbench (1), characterized in that: a mounting frame (3) is arranged on one side of the shell (2), two limit bars (6) are arranged on the side of the mounting frame (3) opposite to the shell (2) in an upper and lower spaced manner, and a rack (17) is fixedly installed between the two limit bars (6); A sliding casing (16) is sleeved on the circumferential outer wall of the rack (17); a light source bearing plate (4) for placing a workpiece is mounted on one side of the rack (17) and on the upper surface of the sliding casing (16); a gear (14) meshing with the rack (17) is rotatably mounted inside the sliding casing (16); and a driving mechanism for driving the gear (14) to rotate is disposed below the light source bearing plate (4).

2. The flash test fixture according to claim 1, characterized in that: The driving mechanism comprises: a second motor (10) and a worm (7) meshingly connected to a gear (14); the second motor (10) located below the light source bearing plate (4) is connected to the worm (7).

3. The flash test fixture according to claim 2, characterized in that: The output shaft of the second motor (10) is connected to a coupling (9) having a short shaft (13), and a shaft sleeve (8) is provided between the short shaft (13) and the worm (7), and the shaft sleeve (8) is fixedly connected to the sliding sleeve (16).

4. The flash test fixture according to claim 3, characterized in that: A fixed bent rod (12) is provided between the second motor (10) and the shaft sleeve (8).

5. The flash test fixture according to claim 1, characterized in that: A fixing strip (5) is arranged between the limiting strip (6) and the mounting frame (3).

6. The flash test fixture according to claim 1, characterized in that: A rotating shaft (15) is arranged between the gear (14) and the sliding housing (16).

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