A batch head concentricity measuring instrument
By designing a detachable bit concentricity measuring instrument, the problem of difficult disassembly of measuring tools in existing technologies has been solved, enabling convenient cleaning and maintenance and extending the service life of the instrument.
Patent Information
- Application Number
- CN202522161659.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-13
AI Technical Summary
Existing concentricity measuring instruments lack a detachable design for the measuring tools, making cleaning and maintenance inconvenient.
A bit concentricity measuring instrument was designed. The motor drives the gear to move the rack and slide rail, enabling quick disassembly and installation of the measuring tool. Combined with the dust cover design, it facilitates cleaning and maintenance.
It enables quick disassembly and installation of measuring tools, facilitating cleaning and maintenance and extending the service life of the instrument.
Smart Images

Figure CN224681542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bit measurement technology, and in particular to a bit concentricity measuring instrument. Background Technology
[0002] A screwdriver bit is a tool or device mounted on a spindle in machining or industrial applications, primarily used for cutting, machining, drilling, or milling operations. Screwdriver bits typically come in various shapes and sizes to suit different machining needs.
[0003] To ensure machining accuracy, a concentricity measuring instrument is used for the bit. This instrument can detect the concentricity between the bit and the spindle, promptly identify and correct deviations, thereby reducing vibration and errors during machining, optimizing machining efficiency, and at the same time, good concentricity can reduce equipment wear and extend the service life of the bit and machine tool.
[0004] In existing concentricity measuring instruments, the measuring tool is usually fixed on the slide bar during use, and it is not detachable, which makes it inconvenient to clean and maintain the measuring tool. Summary of the Invention
[0005] To overcome the above shortcomings, this utility model provides a bit concentricity measuring instrument, which aims to improve the problem of the lack of detachable measuring tools during use.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A bit concentricity measuring instrument includes a base plate, a U-shaped plate fixedly connected to the upper surface of the base plate, a motor fixedly connected to the upper surface of the U-shaped plate, a gear fixedly connected to the output end of the motor, a rack meshing with the outer wall of the gear, a slide rail fixedly connected to the lower surface of the rack, the outer wall of the slide rail slidably connected to the inner wall of the U-shaped plate, a transmission plate fixedly connected to the right outer wall of the rack, a rotating plate rotatably connected to the upper outer wall of the transmission plate, a limit seat rotatably connected inside the rotating plate, a slider fixedly connected to the right outer wall of the limit seat, a slider slidably connected to the inner wall of the U-shaped plate, an arc-shaped plate fixedly connected to the right outer wall of the slider, a measuring frame provided on the outer wall of the arc-shaped plate, and a fixing component provided on the upper surface of the base plate for fixing the bit.
[0008] Preferably, the fixing component includes a fixing frame, the lower surface of which is fixedly connected to the upper surface of the base plate, a sliding seat fixedly connected to the right outer wall of the fixing frame, the lower surface of which is fixedly connected to the upper surface of the base plate, a limit rod rotatably connected inside the fixing frame, a handle provided on the right outer wall of the fixing frame, and a wheel rotatably connected to the right outer wall of the handle.
[0009] Preferably, the lower surface of the rack is slidably connected to the inside of the spiral plate, and the lower outer wall of the measuring frame is slidably connected to the inner wall of the base plate.
[0010] Preferably, a display is fixedly connected to the upper surface of the measuring frame, a short column is fixedly connected to the upper surface of the base plate, and a semi-circular block is fixedly connected to the upper surface of the short column.
[0011] Preferably, a hollow column is slidably connected to the outer wall of the semicircular block, and a dust cover is fixedly connected to the outer wall of the hollow column. The lower surface of the dust cover is disposed on the upper surface of the base plate.
[0012] Preferably, a fixing block is fixedly connected to the front outer wall of the hollow column, and a sliding rod is slidably connected inside the fixing block.
[0013] Preferably, a trapezoidal block is fixedly connected to the rear outer wall of the slide rod, and a spring is fixedly connected to the front outer wall of the trapezoidal block.
[0014] Preferably, the front outer wall of the spring is fixedly connected to the inner wall of the fixing block, the rear outer wall of the trapezoidal block is disposed on the outer wall of the semicircular block, the front outer wall of the trapezoidal block is slidably connected to the inside of the fixing block, and the middle outer wall of the trapezoidal block is slidably connected to the inside of the hollow column.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, the starting motor drives the gear to rotate, which in turn drives the rack and slide rail to move to the right, which in turn drives the transmission plate to move to the right. This causes the rotating plate to rotate to the right under the limiting action of the limiting seat, which in turn drives the slider and arc plate to move forward to release the measuring frame, thus facilitating the cleaning and maintenance of the measuring tool.
[0017] 2. In this utility model, by pulling the sliding rod, the trapezoidal block is moved forward, causing its rear outer wall to slide out of the lower surface of the semicircular block, thus no longer restricting the semicircular block. At the same time, by holding the hollow column, the dust cover is moved upward, allowing for quick disassembly of the dust cover. This reduces the impact of the external environment on the instrument, thereby extending the instrument's service life. Attached Figure Description
[0018] Figure 1 This is a perspective view of a bit concentricity measuring instrument proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the measuring frame of a bit concentricity measuring instrument proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the rack of a bit concentricity measuring instrument proposed in this utility model;
[0021] Figure 4 This is a schematic diagram of the hollow column of a bit concentricity measuring instrument proposed in this utility model.
[0022] Legend:
[0023] 1. Base plate; 2. Fixing frame; 3. Limiting rod; 4. Handle; 5. Rotary wheel; 6. Sliding seat; 7. Recurve plate; 8. Motor; 9. Gear; 10. Rack; 11. Slide rail; 12. Transmission plate; 13. Rotating plate; 14. Limiting seat; 15. Slider; 16. Arc plate; 17. Measuring frame; 18. Display; 19. Short column; 20. Semicircular block; 21. Hollow column; 22. Dust cover; 23. Fixing block; 24. Sliding rod; 25. Trapezoidal block; 26. Spring. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Reference Figures 1-3 This utility model provides an embodiment of a bit concentricity measuring instrument, comprising a base plate 1, a U-shaped plate 7 fixedly connected to the upper surface of the base plate 1, a motor 8 fixedly connected to the upper surface of the U-shaped plate 7, a gear 9 fixedly connected to the output end of the motor 8, a rack 10 meshing with the outer wall of the gear 9, a slide rail 11 fixedly connected to the lower surface of the rack 10, the outer wall of the slide rail 11 slidably connected to the inner wall of the U-shaped plate 7, a transmission plate 12 fixedly connected to the right outer wall of the rack 10, a rotating plate 13 rotatably connected to the upper outer wall of the transmission plate 12, a limiting seat 14 rotatably connected inside the rotating plate 13, and a limiting seat 14 fixedly connected to the right outer wall of the limiting seat 14. There is a slider 15, the outer wall of which is slidably connected to the inner wall of the spiral plate 7. The right outer wall of the slider 15 is fixedly connected to an arc plate 16. The outer wall of the arc plate 16 is provided with a measuring frame 17. The upper surface of the base plate 1 is provided with a fixing component for fixing the bit. The fixing component includes a fixing frame 2. The lower surface of the fixing frame 2 is fixedly connected to the upper surface of the base plate 1. The right outer wall of the fixing frame 2 is fixedly connected to a sliding seat 6. The lower surface of the sliding seat 6 is fixedly connected to the upper surface of the base plate 1. The inside of the fixing frame 2 is rotatably connected to a limit rod 3. The right outer wall of the fixing frame 2 is provided with a handle 4. The right outer wall of the handle 4 is rotatably connected to a rotating wheel 5.
[0026] Specifically, the bit is placed on the upper surface of the fixed frame 2, and the bit is fixed by the fixed frame 2, the limiting rod 3, and the rotating wheel 5. The bit is measured by the probe of the measuring frame 17. The measuring frame 17 is placed on the base plate 1. The starting motor 8 drives the gear 9 to rotate, which drives the rack 10 and the slide rail 11 to move to the left. The slide rail 11 is deflected by the inside of the herringbone plate 7. The rack 10 drives the transmission plate 12 to move to the left, which drives the rotating plate 13 to rotate to the left. This causes the slider 15 and the arc plate 16 to move backward, further fixing the measuring frame 17. The slider 15 is deflected by the inner wall of the herringbone plate 7.
[0027] Reference Figure 3 The lower surface of the rack 10 is slidably connected to the inside of the spiral plate 7, and the lower outer wall of the measuring frame 17 is slidably connected to the inner wall of the base plate 1.
[0028] Specifically, the rack 10 is supported by sliding its lower surface inside the spiral plate 7, and the measuring frame 17 is positioned by the inner wall of the base plate 1.
[0029] Reference Figure 1 , Figure 2 and Figure 4 A display meter 18 is fixedly connected to the upper surface of the measuring frame 17. A short column 19 is fixedly connected to the upper surface of the base plate 1. A semi-circular block 20 is fixedly connected to the upper surface of the short column 19. A hollow column 21 is slidably connected to the outer wall of the semi-circular block 20. A dust cover 22 is fixedly connected to the outer wall of the hollow column 21. The lower surface of the dust cover 22 is set on the upper surface of the base plate 1. A fixing block 23 is fixedly connected to the front outer wall of the hollow column 21. A sliding rod 24 is slidably connected to the inside of the fixing block 23. A trapezoidal block 25 is fixedly connected to the rear outer wall of the sliding rod 24. A spring 26 is fixedly connected to the front outer wall of the trapezoidal block 25. The front outer wall of the spring 26 is fixedly connected to the inner wall of the fixing block 23. The rear outer wall of the trapezoidal block 25 is set on the outer wall of the semi-circular block 20. The front outer wall of the trapezoidal block 25 is slidably connected to the inside of the fixing block 23. The middle outer wall of the trapezoidal block 25 is slidably connected to the inside of the hollow column 21.
[0030] Specifically, when the measuring instrument is not in use, by holding the hollow column 21, the dust cover 22 is moved downwards, causing the inner wall of the hollow column 21 to move downwards along the outer wall of the semicircular block 20. During the downward movement, the trapezoidal block 25 and the slide rod 24 move forward through the inclined side of the semicircular block 20, compressing the spring 26. When the trapezoidal block 25 slides along the inclined side of the semicircular block 20 to its lower surface, under the action of the spring 26, the trapezoidal block 25 moves backwards to limit the semicircular block 20, achieving the effect of quickly installing the dust cover 22. The sliding of the slide rod 24 through the inner wall of the fixing block 23 achieves the effect of offset limitation.
[0031] Working principle: When using this measuring instrument, pulling the slide bar 24 moves the trapezoidal block 25 forward, compressing the spring 26. The trapezoidal block 25 slides forward out of the lower surface of the semicircular block 20, no longer jamming it. Then, by holding the hollow column 21, the dust cover 22 is lifted, achieving quick removal. The bit to be measured is placed in the groove on the upper surface of the fixing frame 2. The back of the handle 4 is lifted upward, fixing the bit with the rotating wheel 5, the limiting rod 3, and the right outer wall of the fixing frame 2. Rotating the limiting rod 3 causes the bit to rotate, and the fixed measuring frame 17 measures the bit. The final result is displayed on the display 18. The motor 8 is started to drive the gears. The rotation of wheel 9 drives rack 10 and slide rail 11 to move to the right, which in turn drives transmission plate 12 to move to the right, which in turn drives rotating plate 13 to rotate to the right, pushing limit seat 14, causing slider 15 to move forward on the inner wall of U-shaped plate 7, and driving arc plate 16 to move forward to release measuring frame 17, achieving the effect of quick disassembly of measuring frame 17. During use, this measuring instrument not only allows for quick fixing and disassembly of measuring frame 17, facilitating cleaning and maintenance of measuring tools, but also facilitates the replacement of suitable tools, thereby improving measurement flexibility. It also allows for the addition of dust cover 22 to the measuring instrument, and quick installation and removal of dust cover 22, reducing the impact of the external environment on the measuring instrument, thereby extending the service life of the instrument.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bit concentricity measuring instrument, comprising a base plate (1), characterized in that: A U-shaped plate (7) is fixedly connected to the upper surface of the base plate (1), a motor (8) is fixedly connected to the upper surface of the U-shaped plate (7), a gear (9) is fixedly connected to the output end of the motor (8), a rack (10) is meshed with the outer wall of the gear (9), a slide rail (11) is fixedly connected to the lower surface of the rack (10), the outer wall of the slide rail (11) is slidably connected to the inner wall of the U-shaped plate (7), and a transmission plate (12) is fixedly connected to the right outer wall of the rack (10). A rotating plate (13) is rotatably connected to the upper outer wall of the plate. A limiting seat (14) is rotatably connected inside the rotating plate (13). A slider (15) is fixedly connected to the right outer wall of the limiting seat (14). The outer wall of the slider (15) is slidably connected to the inner wall of the spiral plate (7). An arc plate (16) is fixedly connected to the right outer wall of the slider (15). A measuring frame (17) is provided on the outer wall of the arc plate (16). A fixing component is provided on the upper surface of the base plate (1). The fixing component is used to fix the bit.
2. The bit concentricity measuring instrument according to claim 1, characterized in that: The fixing assembly includes a fixing frame (2), the lower surface of which is fixedly connected to the upper surface of the base plate (1), a sliding seat (6) is fixedly connected to the right outer wall of the fixing frame (2), the lower surface of which is fixedly connected to the upper surface of the base plate (1), a limit rod (3) is rotatably connected inside the fixing frame (2), a handle (4) is provided on the right outer wall of the fixing frame (2), and a wheel (5) is rotatably connected to the right outer wall of the handle (4).
3. The bit concentricity measuring instrument according to claim 1, characterized in that: The lower surface of the rack (10) is slidably connected to the inside of the spiral plate (7), and the lower outer wall of the measuring frame (17) is slidably connected to the inner wall of the base plate (1).
4. The bit concentricity measuring instrument according to claim 1, characterized in that: The upper surface of the measuring frame (17) is fixedly connected to a display (18), the upper surface of the base plate (1) is fixedly connected to a short column (19), and the upper surface of the short column (19) is fixedly connected to a semi-circular block (20).
5. A bit concentricity measuring instrument according to claim 4, characterized in that: The outer wall of the semicircular block (20) is slidably connected to a hollow column (21), and the outer wall of the hollow column (21) is fixedly connected to a dust cover (22). The lower surface of the dust cover (22) is set on the upper surface of the base plate (1).
6. A bit concentricity measuring instrument according to claim 5, characterized in that: A fixing block (23) is fixedly connected to the front outer wall of the hollow column (21), and a sliding rod (24) is slidably connected inside the fixing block (23).
7. A bit concentricity measuring instrument according to claim 6, characterized in that: A trapezoidal block (25) is fixedly connected to the rear outer wall of the slide rod (24), and a spring (26) is fixedly connected to the front outer wall of the trapezoidal block (25).
8. A bit concentricity measuring instrument according to claim 7, characterized in that: The front outer wall of the spring (26) is fixedly connected to the inner wall of the fixing block (23), the rear outer wall of the trapezoidal block (25) is set on the outer wall of the semicircular block (20), the front outer wall of the trapezoidal block (25) is slidably connected to the inside of the fixing block (23), and the middle outer wall of the trapezoidal block (25) is slidably connected to the inside of the hollow column (21).