Positioning device for a three-point micrometer with digital display

Abstract

This utility model belongs to the field of three-point micrometer positioning technology, specifically a three-point micrometer positioning device with digital display function. It includes a measuring cylinder, an ejector plate slidably connected to the inner wall of the measuring cylinder, a measuring head fixedly connected to the lower surface of the ejector plate, an outer wall slidably connected to the inner wall of the measuring cylinder, a support plate fixedly connected to the inner wall of the measuring cylinder, a motor fixedly connected to the inner wall of the measuring cylinder, and a lead screw fixedly connected to the output end of the motor. This utility model achieves rapid ejection of the measuring head by utilizing the cooperation of the motor and the lead screw, enabling the measuring head to complete measurements without manual operation. Compared to traditional manual measurement, this device offers greater flexibility and convenience, improves adaptability to different measurement environments, and is more convenient for measuring the inner diameter of deep and curved surfaces, thus enhancing the device's ease of use and practicality.

Description

Technical Field

[0001] This utility model belongs to the field of three-point micrometer positioning technology, specifically a three-point micrometer positioning device with digital display function. Background Technology

[0002] Currently, three-point micrometers are widely used in industries such as machinery manufacturing and automotive parts processing. In the future, with the rise of emerging industries such as micro-nano manufacturing and deep-sea equipment manufacturing, there will be new demands for measuring ultra-large or micro-sized inner diameters. Three-point micrometers will expand their measurement range and adapt to the measurement challenges in these specialized fields by developing new probes and adopting modular structures.

[0003] In the existing technology, the traditional three-point micrometer is only suitable for measuring the inner diameter of through holes. It is difficult to measure the diameter of the bottom of blind holes. Furthermore, the readings are prone to errors during measurement, which affects data collection. It cannot be used when encountering deeper holes, which increases the measurement difficulty and leads to reduced measurement efficiency and increased difficulty in use.

[0004] Therefore, this utility model provides a positioning device for a three-point micrometer with digital display function. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The positioning device of the three-point inner diameter micrometer with digital display function of this utility model includes a measuring cylinder, an ejector plate slidably connected to the inner wall of the measuring cylinder, a measuring head fixedly connected to the lower surface of the ejector plate, an outer wall of the measuring head slidably connected to the inner wall of the measuring cylinder, a support plate fixedly connected to the inner wall of the measuring cylinder, a motor fixedly connected to the inner wall of the measuring cylinder, a lead screw fixedly connected to the output end of the motor, the outer wall of the lead screw rotatably connected to the inside of the support plate, an ejector block threadedly connected to the outer wall of the lead screw, and the outer wall of the ejector block slidably connected to the inner wall of the measuring cylinder; through the above structure, the function of quickly ejecting the measuring head is realized by the cooperation of the motor and the lead screw, so that the measuring head can complete the measurement without manual operation when measuring data. Compared with traditional manual measurement, this device has higher flexibility and convenience in use, improves adaptability to different measurement environments, and is more convenient when measuring the inner diameter of deeper and curved surfaces, thus improving the convenience and practicality of the device in use.

[0007] Preferably, a mounting plate is provided at the end of the measuring cylinder near the motor. Both the mounting plate and the measuring cylinder have mounting holes inside. A mounting shaft is provided on the inner wall of the mounting hole. A telescopic shaft is fixed to the outer wall of the mounting plate. A positioning plate is slidably connected to the outer wall of the telescopic shaft. A positioning ring is fixed to the bottom end of the positioning plate. A limit ring is fixed to the outer wall of the positioning ring. A rotating plate is rotatably connected to the outer wall of the positioning ring. The bottom end of the rotating plate is rotatably connected to the upper surface of the limit ring. A rotating groove is provided inside the rotating plate. Through the above structure, the function of adjusting the positioning force is achieved by utilizing the cooperation of the limit ring and the rotating plate. The rotating groove guides the positioning and forms a moving area with the overlapping part of the limit ring, allowing the positioning device to be moved and adjusted as needed. It can adapt to holes with different inner diameters, improving the operability and flexibility of the device during use.

[0008] Preferably, a fixing plate is fixedly connected to the lower surface of the limiting ring, a fixing groove is formed inside the fixing plate, a sliding shaft is slidably connected to the inner wall of the fixing groove, the outer wall of the sliding shaft is slidably connected to the inner wall of the rotating groove, the outer wall of the sliding shaft is slidably connected to the inner wall of the limiting ring, and a positioning shaft is fixedly connected to the end of the sliding shaft away from the positioning plate. Through the above structure, the movement path of the positioning shaft is kept fixed and moves synchronously by the cooperation of the sliding shaft and the fixing groove, which provides convenience for the positioning and fixing of the positioning plate. Compared with the traditional handheld fixing, this device has higher stability and practicality in use.

[0009] Preferably, the inner wall of the positioning piece is fixedly connected to a limiting block, and the outer wall of the telescopic shaft is provided with a limiting groove. The outer wall of the limiting block is slidably connected to the inner wall of the limiting groove. Through the above structure, the limiting block and the limiting groove play a role in limiting the movement of the telescopic shaft, so that the telescopic shaft maintains a fixed movement path and angle when changing position, thereby improving the stability of the device during measurement.

[0010] Preferably, the outer wall of the rotating plate is coated with a damping coating. Through the above structure, the outer wall of the rotating plate is coated with a damping coating, which increases the friction of the outer wall of the rotating plate. During rotation, a greater force is required for adjustment, ensuring that the rotating plate does not change position during positioning and improving the stability of the device during positioning.

[0011] Preferably, the inner wall of the measuring cylinder is coated with a friction-reducing coating. Through the above structure, the friction-reducing coating on the inner wall of the measuring cylinder reduces the friction of the inner wall of the measuring cylinder, reduces the friction of the internal structure during movement, reduces the accuracy loss caused by long-term friction, reduces maintenance costs, and improves measurement accuracy.

[0012] Preferably, both the measuring cylinder and the telescopic shaft are made of lightweight aluminum. By using lightweight aluminum for the measuring cylinder and the telescopic shaft, the corrosion resistance of the measuring cylinder and the telescopic shaft is improved, the impact of different usage environments on the device is reduced, the adaptability is improved, and the overall weight is reduced while maintaining structural strength, making the device lighter, easier to carry and use.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The three-point micrometer positioning device with digital display function described in this utility model, through the above structure, utilizes the cooperation of a motor and a lead screw to achieve the function of quickly ejecting the measuring head, so that the measuring head can complete the measurement without manual operation when measuring data. Compared with traditional manual measurement, this device has higher flexibility and convenience in use, improves adaptability to different measurement environments, and is more convenient when measuring the inner diameter of deeper and curved surfaces, thus improving the convenience and practicality of the device in use.

[0015] 2. The three-point micrometer positioning device with digital display function described in this utility model, through the above structure, realizes the function of adjusting the positioning force by using the cooperation of the limiting ring and the rotating plate. The rotating groove plays a guiding role in positioning, and the overlapping part with the limiting ring forms a moving area, so that the positioning device can be moved and adjusted as needed, and can adapt to holes with different inner diameters, thereby improving the operability and flexibility of the device in use. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the ejector plate in this utility model;

[0019] Figure 3 This is a schematic diagram of the lead screw structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning plate in this utility model;

[0021] Figure 5 This is a schematic diagram of the rotating plate in this utility model;

[0022] Figure 6 This is a schematic diagram of the positioning shaft in this utility model.

[0023] In the diagram: 1. Measuring cylinder; 11. Ejector plate; 12. Measuring head; 13. Support plate; 14. Motor; 15. Lead screw; 16. Ejector block; 2. Telescopic shaft; 21. Mounting plate; 22. Mounting shaft; 23. Positioning plate; 24. Positioning ring; 25. Limiting ring; 26. Rotating plate; 261. Rotating groove; 201. Mounting hole; 3. Fixing plate; 31. Sliding shaft; 32. Positioning shaft; 301. Fixing groove; 4. Limiting block; 41. Limiting groove. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] like Figures 1 to 3 As shown in the embodiment of this utility model, the three-point micrometer positioning device with digital display function includes a measuring cylinder 1. An ejector plate 11 is slidably connected to the inner wall of the measuring cylinder 1. A measuring head 12 is fixedly connected to the lower surface of the ejector plate 11. The outer wall of the measuring head 12 is slidably connected to the inner wall of the measuring cylinder 1. A support plate 13 is fixedly connected to the inner wall of the measuring cylinder 1. A motor 14 is fixedly connected to the inner wall of the measuring cylinder 1. A lead screw 15 is fixedly connected to the output end of the motor 14. The outer wall of the lead screw 15 is rotatably connected to the inside of the support plate 13. An ejector block 16 is threadedly connected to the outer wall of the lead screw 15. The outer wall of the ejector block 16 is slidably connected to the inner wall of the measuring cylinder 1. During operation, when the inner diameter of the instrument needs to be measured, the operator can start the motor 14. The motor 14 drives the lead screw 15 to rotate. When the lead screw 15 rotates, it drives the ejector block 16, which is threadedly connected to its outer wall, to move up and down, causing the position of the ejector block 16 to change. After the ejector block 16 moves a certain distance, it pushes the ejector plate 11, causing the ejector plate 11 to move the measuring head 12. The measuring head 12 is ejected from the inside of the measuring cylinder 1 and contacts the inner wall of the instrument on the outside, thereby measuring its inner diameter. The measurement result is transmitted to the electronic device via a signal. The measuring cylinder 1 plays a guiding and overall support and fixation role, and the support plate 13 plays a supporting role for the lead screw 15. Through the above structure, the function of quickly ejecting the measuring head 12 is realized by the cooperation of the motor 14 and the lead screw 15. This allows the measuring head 12 to complete the measurement without manual operation. Compared with traditional manual measurement, this device has higher flexibility and convenience in use, improves adaptability to different measurement environments, and is more convenient when measuring the inner diameter of deeper and curved surfaces, thus improving the convenience and practicality of the device in use.

[0027] like Figure 1 , Figure 4 and Figure 5 As shown, a mounting plate 21 is provided at one end of the measuring cylinder 1 near the motor 14. Both the mounting plate 21 and the measuring cylinder 1 have mounting holes 201 inside. A mounting shaft 22 is provided on the inner wall of the mounting hole 201. A telescopic shaft 2 is fixedly connected to the outer wall of the mounting plate 21. A positioning plate 23 is slidably connected to the outer wall of the telescopic shaft 2. A positioning ring 24 is fixedly connected to the bottom end of the positioning plate 23. A limit ring 25 is fixedly connected to the outer wall of the positioning ring 24. A rotating plate 26 is rotatably connected to the outer wall of the positioning ring 24. The bottom end of the rotating plate 26 is rotatably connected to the upper surface of the limit ring 25. A rotating groove 261 is provided inside the rotating plate 26. During operation, when measuring a deeper inner diameter, the operator can install the mounting plate 21 at one end of the measuring cylinder 1 and use the mounting shaft 22 to pass through the mounting hole 201 to mount the mounting plate 21. Once fixed in place, the positioning plate 23 can be placed in front of the hole to be measured, and the positioning ring 24 is used for positioning. After placement, the rotation angle of the rotating plate 26 is adjusted, and the positioning force is adjusted using the gap between the rotating groove 261 and the limiting ring 25, which facilitates subsequent positioning. After positioning, the telescopic shaft 2 is passed through the interior of the positioning plate 23, and the measurement position of the inner diameter is adjusted by changing the position of the telescopic shaft 2. Through the above structure, the function of adjusting the positioning force is realized by the cooperation of the limiting ring 25 and the rotating plate 26. The rotating groove 261 plays a guiding role in positioning, and the overlapping part with the limiting ring 25 forms a moving area, which allows the positioning device to be moved and adjusted as needed, adapting to holes with different inner diameters, and improving the operability and flexibility of the device during use.

[0028] like Figures 4 to 6As shown, a fixing plate 3 is fixedly connected to the lower surface of the limiting ring 25. A fixing groove 301 is formed inside the fixing plate 3. A sliding shaft 31 is slidably connected to the inner wall of the fixing groove 301. The outer wall of the sliding shaft 31 is slidably connected to the inner wall of the rotating groove 261 and the inner wall of the limiting ring 25. A positioning shaft 32 is fixedly connected to the end of the sliding shaft 31 away from the positioning plate 23. During operation, when the rotating plate 26 rotates, it drives the sliding shaft 31 to move through the rotating groove 261, causing the sliding shaft 31 to slide simultaneously against the inner walls of the limiting ring 25, the rotating groove 261, and the fixing groove 301. The fixing groove 301 allows the sliding shaft 31 to slide... The movement path of shaft 31 remains fixed, and multiple sliding shafts 31 move simultaneously with the same distance. When the sliding shaft 31 moves, it drives the positioning shaft 32 to move. After the positioning shaft 32 moves a certain distance, it contacts the inner wall of the instrument to be positioned, so that the positioning piece 23 is fixed at the center of the instrument hole, which facilitates the subsequent inner diameter measurement. Through the above structure, the cooperation between the sliding shaft 31 and the fixing groove 301 keeps the movement path of the positioning shaft 32 fixed and moves synchronously, which facilitates the positioning and fixing of the positioning piece 23. Compared with the traditional handheld fixing, this device has higher stability and practicality in use.

[0029] like Figures 4 to 6 As shown, the inner wall of the positioning plate 23 is fixedly connected to the limiting block 4, and the outer wall of the telescopic shaft 2 is provided with a limiting groove 41. The outer wall of the limiting block 4 is slidably connected to the inner wall of the limiting groove 41. During operation, when the telescopic shaft 2 is installed into the interior of the positioning plate 23, the limiting block 4 and the limiting groove 41 can be used for positioning and installation, so that the telescopic shaft 2 remains stable when changing its movement, thus improving the stability of the device during use. Through the above structure, the limiting block 4 and the limiting groove 41 play a role in limiting the movement of the telescopic shaft 2, so that the telescopic shaft 2 maintains a fixed movement path and angle when changing its position, thus improving the stability of the device during measurement.

[0030] like Figures 4 to 6 As shown, the outer wall of the rotating plate 26 is coated with a damping coating. During operation, the damping coating increases the resistance of the rotating plate 26 during rotation, allowing it to remain stable after rotating to a suitable angle, thus improving the stability during positioning. Through the above structure, the damping coating on the outer wall of the rotating plate 26 increases the friction of the outer wall, requiring greater force for adjustment during rotation. This ensures that the rotating plate 26 does not change position during positioning, improving the stability of the device during positioning.

[0031] like Figures 2 to 3As shown, the inner wall of the measuring cylinder 1 is coated with a friction-reducing coating. During operation, the friction-reducing coating reduces the friction on the inner wall of the measuring cylinder 1, improves the smoothness of the internal structure during movement, reduces the wear and tear on the structure due to long-term friction, and extends the service life. Through the above structure, the friction-reducing coating on the inner wall of the measuring cylinder 1 reduces the friction on the inner wall of the measuring cylinder 1, reduces the friction during the movement of the internal structure, reduces the accuracy loss caused by long-term friction, reduces maintenance costs, and improves measurement accuracy.

[0032] like Figures 1 to 3 As shown, both the measuring cylinder 1 and the telescopic shaft 2 are made of lightweight aluminum. During operation, using lightweight aluminum for both the measuring cylinder 1 and the telescopic shaft 2 improves their corrosion resistance and reduces their overall weight, making the device more portable and improving handling. This structure, by using lightweight aluminum for the measuring cylinder 1 and the telescopic shaft 2, enhances their corrosion resistance, reduces the impact of different operating environments on the device, improves its adaptability, and reduces overall weight while maintaining structural strength, making the device more portable and easier to carry and use.

[0033] During operation, when it is necessary to measure the inner diameter of the instrument, the operator can start the motor 14. The motor 14 drives the lead screw 15 to rotate. As the lead screw 15 rotates, it causes the ejector block 16, which is threaded to its outer wall, to move up and down, changing its position. After moving a certain distance, the ejector block 16 pushes the ejector plate 11, causing the ejector plate 11 to move the measuring head 12. The measuring head 12 is ejected from inside the measuring cylinder 1 and contacts the inner wall of the instrument on the outer side, thus measuring its inner diameter. The measurement result is transmitted to the electronic equipment via a signal. The measuring cylinder 1 serves as a guide and provides overall support and fixation, while the support plate 13 supports the lead screw 15. During operation, when it is necessary to measure… When measuring deeper inner diameters, the operator can install the mounting plate 21 at one end of the measuring cylinder 1 and fix the mounting plate 21 by passing the mounting shaft 22 through the mounting hole 201. At this time, the positioning plate 23 can be placed in front of the hole to be measured and positioned by the positioning ring 24. After placement, the positioning force can be adjusted by adjusting the rotation angle of the rotating plate 26 and the gap between the rotating groove 261 and the limiting ring 25, which facilitates subsequent positioning. After positioning, the telescopic shaft 2 is passed through the inside of the positioning plate 23, and the measurement position of the inner diameter is adjusted by changing the position of the telescopic shaft 2. During operation, when the rotating plate 26 rotates, it drives the sliding shaft 31 to move through the rotating groove 261, so that the sliding shaft 31... The sliding shaft 31 slides simultaneously against the inner walls of the limiting ring 25, the rotating groove 261, and the fixing groove 301. The fixing groove 301 keeps the movement path of the sliding shaft 31 fixed, and multiple sliding shafts 31 move simultaneously with the same distance. When the sliding shaft 31 moves, it drives the positioning shaft 32 to move. After moving a certain distance, the positioning shaft 32 contacts the inner wall of the instrument to be positioned, so that the positioning piece 23 is fixed at the center of the instrument hole, which facilitates subsequent inner diameter measurement. During operation, when installing the telescopic shaft 2 into the inside of the positioning piece 23, the limiting block 4 and the limiting groove 41 can be used for positioning and installation, so that the telescopic shaft 2 remains stable when changing movement, improving the stability of the device during use. During operation, a damping coating is sprayed onto the outer wall of the rotating plate 26, increasing the resistance of the rotating plate 26 during rotation and allowing it to remain stable after rotating to a suitable angle, thus improving the stability during positioning. During operation, a friction-reducing coating is sprayed onto the inner wall of the measuring cylinder 1, reducing the friction on the inner wall of the measuring cylinder 1, improving the smoothness of the internal structure during movement, reducing the wear and tear on the structure due to long-term friction, and extending its service life. During operation, both the measuring cylinder 1 and the telescopic shaft 2 are made of lightweight aluminum, improving the corrosion resistance of the measuring cylinder 1 and the telescopic shaft 2, while reducing the overall weight of the measuring cylinder 1 and the telescopic shaft 2, making the device lighter and easier to use and improving the operating feel.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A three-point micrometer positioning device with digital display function, comprising a measuring cylinder (1), characterized in that: The inner wall of the measuring cylinder (1) is slidably connected to an ejector plate (11), and a measuring head (12) is fixedly connected to the lower surface of the ejector plate (11). The outer wall of the measuring head (12) is slidably connected to the inner wall of the measuring cylinder (1). A support plate (13) is fixedly connected to the inner wall of the measuring cylinder (1). A motor (14) is fixedly connected to the inner wall of the measuring cylinder (1). A lead screw (15) is fixedly connected to the output end of the motor (14). The outer wall of the lead screw (15) is rotatably connected to the inside of the support plate (13). An ejector block (16) is threadedly connected to the outer wall of the lead screw (15). The outer wall of the ejector block (16) is slidably connected to the inner wall of the measuring cylinder (1).

2. The positioning device for a three-point micrometer with digital display function according to claim 1, characterized in that: The measuring cylinder (1) is provided with a mounting plate (21) at one end near the motor (14). The mounting plate (21) and the measuring cylinder (1) are both provided with mounting holes (201). The inner wall of the mounting hole (201) is provided with a mounting shaft (22). The outer wall of the mounting plate (21) is fixedly connected with a telescopic shaft (2). The outer wall of the telescopic shaft (2) is slidably connected with a positioning plate (23). The bottom end of the positioning plate (23) is fixedly connected with a positioning ring (24). The outer wall of the positioning ring (24) is fixedly connected with a limit ring (25). The outer wall of the positioning ring (24) is rotatably connected with a rotating plate (26). The bottom end of the rotating plate (26) is rotatably connected to the upper surface of the limit ring (25). The rotating plate (26) is provided with a rotating groove (261) inside.

3. The positioning device for a three-point inner diameter micrometer with digital display function according to claim 2, characterized in that: A fixing plate (3) is fixedly connected to the lower surface of the limiting ring (25). A fixing groove (301) is provided inside the fixing plate (3). A sliding shaft (31) is slidably connected to the inner wall of the fixing groove (301). The outer wall of the sliding shaft (31) is slidably connected to the inner wall of the rotating groove (261). The outer wall of the sliding shaft (31) is slidably connected to the inner wall of the limiting ring (25). A positioning shaft (32) is fixedly connected to the end of the sliding shaft (31) away from the positioning plate (23).

4. The positioning device for a three-point inner diameter micrometer with digital display function according to claim 2, characterized in that: The inner wall of the positioning piece (23) is fixedly connected to the limiting block (4), and the outer wall of the telescopic shaft (2) is provided with a limiting groove (41). The outer wall of the limiting block (4) is slidably connected to the inner wall of the limiting groove (41).

5. The positioning device for a three-point inner diameter micrometer with digital display function according to claim 2, characterized in that: The outer wall of the rotating plate (26) is coated with a damping coating.

6. The positioning device for a three-point inner diameter micrometer with digital display function according to claim 1, characterized in that: The inner wall of the measuring cylinder (1) is coated with a friction-reducing coating.

7. The positioning device for a three-point inner diameter micrometer with digital display function according to claim 2, characterized in that: Both the measuring cylinder (1) and the telescopic shaft (2) are made of lightweight aluminum.

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