Reference plane switching device used on PCF testing fixture

Abstract

The utility model relates to the technical field of PCF testing fixture switching, and discloses a reference surface switching device used on a PCF testing fixture, which comprises a bottom plate, the top side of the bottom plate is in sliding connection with two mounting plates, two clamping assemblies are arranged in the mounting plates, the clamping assemblies are used for clamping and fixing a reference surface, and the clamping assemblies are used for clamping and fixing the reference surface. A worm and a worm gear are rotationally connected into the bottom plate, the worm and the worm gear are connected in a meshed mode, a rotating shaft is fixedly connected to the top side of the worm, a gear is fixedly connected to the top end of the rotating shaft, two racks are slidably connected into the top side of the bottom plate, and the racks are connected with the gear in a meshed mode. Two fixing blocks are fixedly connected to the top side of the rack, and the top sides of the two fixing blocks are fixedly connected to the bottom side of the mounting plate. According to the utility model, the two racks move to drive the two mounting plates to move so as to complete rapid switching of the reference surface, and the clamping plates move towards the reference surface and clamp the reference surface so as to complete rapid mounting of the reference surface.

Description

Technical Field

[0001] The utility model relates to the technical field of PCF checking fixture switching, in particular to a reference plane switching device used on a PCF checking fixture. Background Art

[0002] Automobiles are made up of numerous complex components, and the dimensional accuracy of each component directly impacts the assembly quality and performance of the entire vehicle. PCF fixtures enable high-precision measurement of components during production, ensuring their dimensions meet design requirements.

[0003] The PCF fixture is equipped with a reference surface that can be used to determine the position and size of the inspected parts. The reference surface allows the inspected parts to be accurately placed on the fixture and their position in space to be determined. It provides a unified standard for part inspection, ensuring the accuracy and reliability of the test results. Different reference surfaces are required when inspecting different parts.

[0004] The existing reference surface is installed on the inspection fixture by bolts. When replacing the reference surface, multiple bolts need to be rotated, resulting in low reference surface replacement efficiency. Therefore, a reference surface switching device for PCF inspection fixture is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides a reference plane switching device for a PCF gauge, aiming to improve the problem of low reference plane replacement efficiency in the prior art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A reference plane switching device for a PCF gauge comprises a base plate, the top side of the base plate being slidably connected to two mounting plates, two clamping assemblies being provided inside the mounting plate, the clamping assemblies being used to clamp and fix the reference plane, a worm and a worm wheel being rotatably connected inside the base plate, the worm and the worm wheel being meshed with each other, a rotating shaft being fixedly connected to the top side of the worm, a gear being fixedly connected to the top end of the rotating shaft, two racks being slidably connected inside the top side of the base plate, the racks being meshed with the gears, two fixed blocks being fixedly connected to the top side of the racks, and the top sides of the two fixed blocks being fixedly connected to the bottom side of the mounting plate;

[0008] As a further description of the above technical solution:

[0009] The plurality of clamping assemblies each include an electric push rod, the electric push rod being fixedly connected to the inside of the mounting plate, the telescopic end of the electric push rod being rotatably connected to two connecting rods, one side of the connecting rod being rotatably connected to a support plate, and the top side of the support plate being fixedly connected to a clamping plate;

[0010] As a further description of the above technical solution:

[0011] Two connecting blocks are fixedly connected to the bottom side of the rack, and a guide rod is slidably connected to the middle of two adjacent connecting blocks, and the guide rod is fixedly connected to the inside of the bottom plate;

[0012] As a further description of the above technical solution:

[0013] Two support blocks are fixedly connected to the bottom side of the mounting plate, and rollers are rotatably connected inside the support blocks;

[0014] As a further description of the above technical solution:

[0015] The bottom side of the support plate is fixedly connected to a limiting block, and a plurality of limiting grooves are opened inside the mounting plate, and the limiting block is slidably connected inside the limiting grooves;

[0016] As a further description of the above technical solution:

[0017] Two adjacent clamping plates are fixedly connected to each other on one side thereof;

[0018] As a further description of the above technical solution:

[0019] A plurality of slide grooves are provided on the inner side of the top of the bottom plate, and the fixing block and the supporting block are slidably connected inside the slide grooves;

[0020] As a further description of the above technical solution:

[0021] The front end of the worm is fixedly connected with a turntable.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, the reference surface is mounted on the top side of the mounting plate. When the reference surface needs to be replaced, the turntable can be rotated to drive the worm to rotate. The rotation of the worm can drive the worm wheel to rotate. The worm wheel drives the gear to rotate through the rotating shaft. The rotation of the gear can drive the two racks to move. The racks can drive the mounting plate to move, thereby completing the rapid switching of the reference surface.

[0024] 2. In the present invention, after placing the reference surface on the surface of the mounting plate, the two electric push rods inside the mounting plate are started. The telescopic ends of the electric push rods are extended to drive the connecting rods to rotate. During the rotation of the connecting rods, the clamping plate can be driven by the support plate to move toward the reference surface and clamp the reference surface, thereby completing the rapid installation of the reference surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of the reference plane switching device for a PCF gauge proposed in the present invention;

[0026] Figure 2 This is a structural schematic diagram of the bottom plate of the reference plane switching device for the PCF inspection fixture proposed in the present invention;

[0027] Figure 3 This is a schematic structural diagram of the worm gear used in the reference plane switching device on the PCF gauge proposed in the present invention;

[0028] Figure 4 This is a structural schematic diagram of the support block of the reference plane switching device for the PCF inspection fixture proposed in the present invention;

[0029] Figure 5 This is a structural schematic diagram of the mounting plate of the reference plane switching device for a PCF gauge proposed in the present invention.

[0030] Legend:

[0031] 1. Base plate; 2. Turntable; 3. Mounting plate; 4. Clamp; 5. Fixing block; 6. Support block; 7. Guide rod; 8. Connecting block; 9. Rack; 10. Worm; 11. Gear; 12. Rotating shaft; 13. Worm wheel; 14. Roller; 15. Limit block; 16. Limit slot; 17. Electric push rod; 18. Support plate; 19. Rubber pad; 20. Connecting rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 4The utility model provides an embodiment of a reference plane switching device for a PCF inspection fixture, comprising a base plate 1, the base plate 1 being used to install a fixed internal structure, two mounting plates 3 being slidably connected to the top side of the base plate 1, the mounting plate 3 being used to install a reference plane, a worm 10 and a worm wheel 13 being rotatably connected inside the base plate 1, the worm 10 and the worm wheel 13 being meshed together, a turntable 2 being fixedly connected to the front end of the worm 10, the rotating turntable 2 can drive the worm 10 to rotate, the worm wheel 13 can be driven to rotate during the rotation of the worm 10, a rotating shaft 12 is fixedly connected to the top side of the worm 10, the worm wheel 13 can drive the gear 11 to rotate through the rotating shaft 12, a gear 11 is fixedly connected to the top end of the rotating shaft 12, the rotation of the gear 11 can drive the rack 9 to move, two racks 9 are slidably connected to the top side of the base plate 1, the rack 9 is meshed with the gear 11, and the movement of the rack 9 can drive the mounting plate 3 When moving, the top side of the rack 9 is fixedly connected to two fixed blocks 5, and the top sides of the two fixed blocks 5 are fixedly connected to the bottom side of the mounting plate 3. The fixed block 5 serves to connect the mounting plate 3 and the rack 9 to each other. The bottom side of the rack 9 is fixedly connected to two connecting blocks 8. The connecting block 8 is used to connect the rack 9 and the guide rod 7 to each other. The middle parts of the two adjacent connecting blocks 8 are slidably connected with a guide rod 7. The guide rod 7 is fixedly connected to the inside of the base plate 1. The guide rod 7 can guide the rack 9 to move smoothly. Two supporting blocks 6 are fixedly connected to the bottom side of the mounting plate 3. The support block 6 is used to support the mounting plate 3 to move stably. The support block 6 is rotatably connected to the inside of the support block 6. The installation roller 14 can reduce the friction between the support block 6 and the base plate 1. A plurality of slide grooves are provided on the inner side of the top of the base plate 1. The fixed block 5 and the support block 6 are slidably connected to the inside of the slide groove. A slide groove is provided to limit the movement of the fixed block 5 and the support block 6.

[0034] Reference Figure 1 、 Figure 5 , two clamping assemblies are provided inside the mounting plate 3, and the clamping assemblies are used to clamp and fix the reference surface. Multiple clamping assemblies include an electric push rod 17, which is fixedly connected to the inside of the mounting plate 3. The telescopic end of the electric push rod 17 can be telescoped to drive the connecting rod 20 to rotate. The telescopic end of the electric push rod 17 is rotatably connected to two connecting rods 20. The rotation of the connecting rod 20 can drive the support plate 18 to move. One side of the connecting rod 20 is rotatably connected to the support plate 18. The support plate 18 plays the role of installing the splint 4. The bottom of the support plate 18 The side is fixedly connected with a limit block 15, and a plurality of limit grooves 16 are opened inside the mounting plate 3. The limit block 15 is slidably connected inside the limit groove 16. The limit block 15 slides inside the limit groove 16 to limit the movement of the support plate 18. The top side of the support plate 18 is fixedly connected with a clamping plate 4. The two adjacent clamping plates 4 move toward each other to clamp and fix the reference surface. The two adjacent clamping plates 4 are fixedly connected to the opposite sides with rubber pads 19. Installing the rubber pads 19 can increase the contact area between the clamping plate 4 and the reference surface, thereby increasing the friction between the clamping plate 4 and the reference surface.

[0035] Working principle: When inspecting automobile parts, the reference surface can be placed on the top side of the mounting plate 3, and then multiple electric push rods 17 are started. The telescopic ends of the electric push rods 17 are extended to drive the connecting rod 20 to rotate. During the rotation of the connecting rod 20, the support plate 18 can be used to drive the splint 4 to move toward the reference surface so that the multiple splints 4 clamp the reference surface to complete the installation of the reference surface. After that, the parts can be inspected.

[0036] When the reference surface needs to be switched, the turntable 2 can be rotated to drive the turntable 2 to drive the worm 10 to rotate, and the rotation of the worm 10 drives the worm wheel 13 to rotate. The worm wheel 13 drives the gear 11 to rotate through the rotating shaft 12. During the rotation of the gear 11, the two racks 9 can be driven to move. The two racks 9 drive the two mounting plates 3 to move respectively through multiple fixed blocks 5, thereby completing the rapid replacement of the reference surface.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reference plane switching device for a PCF inspection fixture, comprising a base plate (1), characterized in that: The top side of the base plate (1) is slidably connected to two mounting plates (3), and two clamping assemblies are provided inside the mounting plate (3). The clamping assemblies are used to clamp and fix the reference surface. A worm (10) and a worm wheel (13) are rotatably connected inside the base plate (1), and the worm (10) and the worm wheel (13) are meshed and connected. The top side of the worm (10) is fixedly connected to a rotating shaft (12), and the top end of the rotating shaft (12) is fixedly connected to a gear (11). Two racks (9) are slidably connected inside the top side of the base plate (1), and the racks (9) are meshed and connected to the gear (11). The top side of the rack (9) is fixedly connected to two fixed blocks (5), and the top sides of the two fixed blocks (5) are fixedly connected to the bottom side of the mounting plate (3).

2. The reference plane switching device for a PCF gauge according to claim 1, characterized in that: The plurality of clamping assemblies each include an electric push rod (17), the electric push rod (17) being fixedly connected to the inside of the mounting plate (3), the telescopic end of the electric push rod (17) being rotatably connected to two connecting rods (20), one side of the connecting rod (20) being rotatably connected to a support plate (18), and the top side of the support plate (18) being fixedly connected to a clamping plate (4).

3. The reference plane switching device for a PCF gauge according to claim 1, characterized in that: Two connecting blocks (8) are fixedly connected to the bottom side of the rack (9), and a guide rod (7) is slidably connected to the middle of two adjacent connecting blocks (8), and the guide rod (7) is fixedly connected to the inside of the bottom plate (1).

4. The reference plane switching device for a PCF gauge according to claim 1, characterized in that: Two support blocks (6) are fixedly connected to the bottom side of the mounting plate (3), and rollers (14) are rotatably connected inside the support blocks (6).

5. The reference plane switching device for a PCF gauge according to claim 2, characterized in that: The bottom side of the support plate (18) is fixedly connected to a limiting block (15), a plurality of limiting grooves (16) are provided inside the mounting plate (3), and the limiting block (15) is slidably connected inside the limiting grooves (16).

6. The reference plane switching device for a PCF gauge according to claim 2, characterized in that: The two adjacent clamping plates (4) are both fixedly connected to a rubber pad (19) on the opposite side.

7. The reference plane switching device for a PCF gauge according to claim 4, characterized in that: A plurality of sliding grooves are provided on the inner side of the top of the bottom plate (1), and the fixing block (5) and the supporting block (6) are slidably connected inside the sliding grooves.

8. The reference plane switching device for a PCF gauge according to claim 1, characterized in that: The front end of the worm (10) is fixedly connected to a turntable (2).

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