Workpiece inner diameter detection tool

Abstract

The utility model discloses a work piece inner diameter detection frock, including base, the top one end fixedly connected with backplate of base, the front end fixedly connected with the axle stem of backplate, the outer wall rotationally connected with the multi -sided disc of axle stem, the outer wall center of each side of multi -sided disc all is seted up with slide cavity, and the inner wall one end of slide cavity all is fixedly connected with the collar, the region of the most top of multi -sided disc is seted into inner diameter detection area, and the face of the outer wall of multi -sided disc in inner diameter detection area and the top surface of base are mutually parallel, and set into inner diameter detection platform, and the size of the detection disc in each group of slide cavity is all not same, and the staff can rotate the face of the outer wall of the detection disc of matching work piece inner diameter size multi -sided disc to inner diameter detection area, and directly can detect work piece inner diameter, not only has improved the accuracy of detection structure, and also avoided the damage of work piece itself or detection disc surface.

Description

Technical Field

[0001] This utility model relates to the field of workpiece inspection equipment technology, and in particular to a workpiece inner diameter inspection fixture. Background Technology

[0002] A workpiece, also known as a component, part, machine part, or hardware part, refers to a product object that is formed from raw materials through processing and treatment during the manufacturing process and is at a certain stage of processing. It can be a single part or an assembly composed of multiple parts. For example, in automobile manufacturing, an engine cylinder block is a workpiece; while in electronic equipment production, a circuit board with some components already soldered on can also be called a workpiece.

[0003] When manufacturing such ring-shaped workpieces, because they are made of rubber material and their inner and outer diameters are generally not much different, and because rubber material is elastic, even a small force will cause the ring-shaped workpiece to deform. Therefore, it is difficult to measure its inner diameter using conventional methods such as inside micrometers and vernier calipers. Based on these problems, Chinese patent CN203908463U discloses a testing fixture for detecting the inner diameter of ring-shaped workpieces. The ring to be tested is inserted into the fixture from the end with the smaller diameter, and it is freely clamped on the fixture. The final position of the ring on the fixture is observed. If its position is between the red lines, it is qualified; otherwise, it is unqualified.

[0004] The following problems exist: When using this device to accurately detect the inner diameter of a workpiece, the operator first needs to securely place the workpiece on the outer wall of the device. If the specific frustum corresponding to the inner diameter of the workpiece is located at the bottom of the device, then to ensure the accuracy and comprehensiveness of the detection, the operator must pass the workpiece through multiple frustums above the device in sequence. However, during this operation, whether the workpiece moves downward or slides upward, it may collide with the surface of other frustums inside the device during the sliding process. This collision may not only affect the accuracy of the detection results, but may also cause unnecessary damage to the workpiece itself or the frustum surface of the device. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A workpiece inner diameter detection fixture includes a base, a back plate fixedly connected to one top end of the base, a shaft fixedly connected to the front end of the back plate, a multi-faceted disk rotatably connected to the outer wall of the shaft, a sliding cavity opened at the center of the outer wall of each side of the multi-faceted disk, a collar fixedly connected to one end of the inner wall of each sliding cavity, and a detection disk slidably connected to the other end of the inner wall of each sliding cavity.

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

[0009] The inner wall of each collar is rotatably connected to a shaft core, the top of each shaft core is fixedly connected to a threaded post, the outer wall of each threaded post is threadedly connected to a threaded sleeve, and a circular hole is opened at the bottom center of each detection disc, and the inner wall of the circular hole is fixedly connected to the outer wall of the threaded sleeve.

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

[0011] Limiting rods are fixedly connected to both ends of the top of the collar, and limiting holes are opened at both ends of the bottom of the detection disk. The inner walls of the limiting holes are slidably connected to the outer walls of the limiting rods, and a first helical gear is fixedly connected to the bottom of the shaft core.

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

[0013] A shaft tube extends through the outer edge of the front end of the multi-faceted disk. A rotating rod is rotatably connected to the inner wall of the shaft tube. A second helical gear is fixedly connected to the rear end of each rotating rod. The teeth on the outer wall of the first helical gear mesh with the tooth grooves on the outer wall of the second helical gear.

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

[0015] The base has a cavity at its front end. Spring rods are fixedly connected to the top and bottom ends of the inner wall of the cavity. Return springs are sleeved on the bottom ends of the outer walls of the spring rods. A foot pedal is slidably connected to the top end of the outer walls of the spring rods.

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

[0017] The base has a cavity at its front end. Spring rods are fixedly connected to the top and bottom ends of the inner wall of the cavity. Return springs are sleeved on the bottom ends of the outer walls of the spring rods. A foot pedal is slidably connected to the top end of the outer walls of the spring rods.

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

[0019] Each side of the multi-faceted disk has a socket at both ends of its outer wall, and the top of the outer wall of the plug can be inserted into the inner wall of the socket.

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

[0021] The size of the detection disk in each set of sliding cavities is different, and the internal space of the shaft tube is interconnected with the internal space of the sliding cavity.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] (1) The area at the top of the multi-faceted disk is set as the inner diameter detection area. The outer wall of the multi-faceted disk in the inner diameter detection area is parallel to the top surface of the base and is set as the inner diameter detection platform. When the multi-faceted disk rotates, the inner diameter detection platform can be switched. The size of the detection disk in each set of sliding cavities is different. The operator can rotate the outer wall of the multi-faceted disk where the detection disk matching the inner diameter of the workpiece is located to the inner diameter detection area, so that the inner diameter of the workpiece can be directly detected. This not only improves the accuracy of the detection structure, but also avoids damage to the workpiece itself or the surface of the detection disk.

[0024] (2) When the operator rotates the second inclined gear at the rear end of the rotating rod, the threaded column on the top shaft of the first inclined gear will also rotate. At this time, the threaded sleeve can move back and forth on the outer wall of the rotating threaded column, and the outer wall of the detection plate will slide back and forth against the inner wall of the slide cavity. This allows the length of the detection plate extending out of the outer wall of the multi-faceted plate to be adjusted, thus facilitating the detection of workpieces with different inner diameters and depths. Attached Figure Description

[0025] Figure 1 This is a three-dimensional view of the present invention;

[0026] Figure 2 This is a front view of the present invention;

[0027] Figure 3 This is a front sectional view of the present invention.

[0028] The correspondence between the labels and component names in the attached figures is as follows:

[0029] 1. Base; 2. Back plate; 3. Shaft; 4. Multi-faceted plate; 5. Sliding cavity; 6. Shaft collar; 7. Shaft core; 8. Threaded column; 9. Threaded sleeve; 10. Detection plate; 11. First helical gear; 12. Shaft tube; 13. Rotating rod; 14. Second helical gear; 15. Cavity; 16. Spring rod; 17. Return spring; 18. Foot pedal; 19. Platform; 20. Insertion rod; 21. Insertion hole; 22. Limiting rod. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0033] Reference Figure 1-3 This utility model provides an embodiment of a workpiece inner diameter detection fixture, including a base 1, a back plate 2 fixedly connected to one top end of the base 1, a shaft 3 fixedly connected to the front end of the back plate 2, and a multi-faceted disk 4 rotatably connected to the outer wall of the shaft 3. The uppermost area of ​​the multi-faceted disk 4 is set as an inner diameter detection area. The outer wall of the multi-faceted disk 4 located in the inner diameter detection area, which is parallel to the top surface of the base 1, is set as an inner diameter detection platform. When the multi-faceted disk 4 rotates, the inner diameter detection platform can be switched. Each side of the multi-faceted disk 4... Each wall has a sliding cavity 5 at its center. A collar 6 is fixedly connected to one end of the inner wall of each sliding cavity 5. A shaft core 7 is rotatably connected to the inner wall of each collar 6. A threaded column 8 is fixedly connected to the top of each shaft core 7. A threaded sleeve 9 is threadedly connected to the outer wall of each threaded column 8. A detection disc 10 is fixedly connected to the outer wall of each threaded sleeve 9. It is worth noting that the size of the detection disc 10 in each set of sliding cavities 5 is different. The operator can rotate the outer wall of the multi-faceted disc 4 containing the detection disc 10 that matches the inner diameter of the workpiece to the inner diameter detection area.

[0034] Limiting rods 22 are fixedly connected to both ends of the top of the collar 6. Limiting holes are opened at both ends of the bottom of the detection disk 10, and the inner walls of the limiting holes are slidably connected to the outer walls of the limiting rods 22. By setting the limiting rods 22, the stability of the detection disk 10 during the sliding process can be improved. A first helical gear 11 is fixedly connected to the bottom of the shaft core 7. A shaft tube 12 passes through the outer edge of the front end of the multifaceted disk 4. The internal space of the shaft tube 12 is interconnected with the internal space of the slide cavity 5. A rotating rod 13 is rotatably connected to the inner wall of the shaft tube 12. A second helical gear 14 is fixedly connected to the rear end of the rotating rod 13. The second helical gear 14 is set inside the slide cavity 5. The teeth on the outer wall of the first helical gear 11 mesh with the tooth grooves on the outer wall of the second helical gear 14. By setting a connection structure between the first helical gear 11 and the second helical gear 14, when the operator rotates the second helical gear 14 at the rear end of the rotating rod 13, the threaded post 8 on the top shaft core 7 of the first helical gear 11 will also rotate. At this time, the threaded sleeve 9 can move back and forth on the outer wall of the rotating threaded post 8, and at the same time, the outer wall of the detection disk 10 will slide back and forth against the inner wall of the slide cavity 5. This allows the length of the detection disk 10 extending out of the outer wall of the multi-faceted disk 4 to be adjusted, thereby facilitating the detection of workpieces with different inner diameters and depths.

[0035] The base 1 has a cavity 15 at its front end. Spring rods 16 are fixedly connected to the top and bottom ends of the inner wall of the cavity 15. Return springs 17 are sleeved on the bottom ends of the outer walls of the spring rods 16. A foot pedal 18 is slidably connected to the top end of the outer wall of the spring rods 16. By setting the return springs 17, the foot pedal 18 can be pushed upward. A square hole is opened at the other end of the top of the base 1. A platform 19 is fixedly connected to the inner wall of the square hole. Insert rods 20 are fixedly connected to the top ends of the foot pedal 18. A sliding hole is opened at both ends of the platform 19. The inner wall of the sliding hole is slidably connected to the outer wall of the insert rod 20. Insert holes 21 are opened at both ends of the outer wall of each side of the multi-sided disk 4. The top end of the outer wall of the insert rod 20 can be inserted into the inner wall of the insert hole 21. By setting the connection structure between the insert rod 20 and the insert hole 21, the multi-sided disk 4 can be fixed, thereby preventing the multi-sided disk 4 from rotating.

[0036] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A workpiece inner diameter detection fixture, comprising a base (1), characterized in that: The base (1) has a back plate (2) fixedly connected to one end of its top. The back plate (2) has a shaft (3) fixedly connected to its front end. The outer wall of the shaft (3) is rotatably connected to a multi-faceted disk (4). A sliding cavity (5) is provided at the center of the outer wall of each side of the multi-faceted disk (4). A collar (6) is fixedly connected to one end of the inner wall of the sliding cavity (5). A detection disk (10) is slidably connected to the other end of the inner wall of the sliding cavity (5).

2. The workpiece inner diameter detection fixture according to claim 1, characterized in that: The inner wall of each collar (6) is rotatably connected to a shaft core (7), the top of each shaft core (7) is fixedly connected to a threaded column (8), the outer wall of each threaded column (8) is threadedly connected to a threaded sleeve (9), and a round hole is opened at the bottom center of each detection disc (10), and the inner wall of the round hole is fixedly connected to the outer wall of the threaded sleeve (9).

3. The workpiece inner diameter detection fixture according to claim 2, characterized in that: The top two ends of the collar (6) are fixedly connected to limit rods (22), the bottom two ends of the detection disk (10) are opened with limit holes, and the inner wall of the limit hole is slidably connected to the outer wall of the limit rod (22). The bottom end of the shaft core (7) is fixedly connected to a first helical gear (11).

4. The workpiece inner diameter detection fixture according to claim 3, characterized in that: The multifaceted disk (4) has a shaft tube (12) extending through its front outer edge. The inner wall of the shaft tube (12) is rotatably connected to a rotating rod (13). The rear end of the rotating rod (13) is fixedly connected to a second helical gear (14). The teeth on the outer wall of the first helical gear (11) mesh with the tooth grooves on the outer wall of the second helical gear (14).

5. The workpiece inner diameter detection fixture according to claim 1, characterized in that: The base (1) has a cavity (15) at its front end. Spring rods (16) are fixedly connected to the top and bottom ends of the inner wall of the cavity (15). A reset spring (17) is sleeved on the bottom end of the outer wall of the spring rod (16). A foot pedal (18) is slidably connected to the top end of the outer wall of the spring rod (16).

6. The workpiece inner diameter detection fixture according to claim 5, characterized in that: The base (1) has a square hole at the other end of its top, and a platform (19) is fixedly connected to the inner wall of the square hole. The pedal (18) has a rod (20) fixedly connected to both ends of its top. The platform (19) has a sliding hole that runs vertically through both ends, and the inner wall of the sliding hole is slidably connected to the outer wall of the rod (20).

7. The workpiece inner diameter detection fixture according to claim 6, characterized in that: Each side of the multi-faceted disk (4) has a socket (21) at both ends of its outer wall, and the top of the outer wall of the plug (20) can be inserted into the inner wall of the socket (21).

8. The workpiece inner diameter detection fixture according to claim 4, characterized in that: The size of the detection disk (10) in each set of sliding cavities (5) is different, and the internal space of the shaft tube (12) is interconnected with the internal space of the sliding cavity (5).

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