High-precision motion reading device for main shaft of altimeter

Abstract

The utility model relates to the field of measuring devices, and discloses an altimeter main shaft high-precision motion reading device which comprises a base, a sliding rail is installed at the top end of the base, a sliding frame is connected to the outer wall of a main shaft in a sliding mode, a grating ruler is attached to the surface of the main shaft, and a floating frame is connected to the front end of the sliding frame in a sliding mode. A power assembly is arranged on the upper surface of the base, a measuring mechanism is arranged at the front end of the floating frame and comprises an induction assembly and a reset assembly, the induction device comprises an induction plate, the rear end of the induction plate is fixedly connected to the front end of the sliding frame, and a Hall sensor is installed at the front end of the floating frame. According to the utility model, the synchronous belt can be driven to rotate by rotating the hand wheel, so that the sliding frame can be driven to move, the floating frame can be driven to move by moving the sliding frame, so that the measuring head can be driven to move, and when the measuring head is in contact with a measured object, the sliding frame cannot continue to move.

Description

Technical Field

[0001] This utility model relates to the field of measuring devices, and in particular to a high-precision motion reading device for the spindle of a height measuring instrument. Background Technology

[0002] A height gauge is a precision instrument specifically designed for measuring height. It has a wide and important application in many fields such as industrial production, precision machining, and metrology. The most commonly used height gauges are contact height gauges, which directly contact the surface of the object being measured through a probe. They use mechanical transmission structures or sensors to convert the displacement changes generated during contact into measurable data, thereby obtaining the height value.

[0003] Currently, height dimensions are generally measured using height rulers or height gauges, which have large measurement errors, limited measurement functions, and are only suitable for simple height and depth measurements. Furthermore, the measurement speed must not be too fast during measurement, as excessively fast operation by the operator can lead to deviations between the measured position and the actual position, ultimately resulting in incorrect readings. The overall measurement accuracy of the device is low. To address these issues, a high-precision motion reading device for the spindle of a height measuring instrument is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-precision motion reading device for the spindle of a height measuring instrument, which aims to improve the problem that "contact height measuring instruments in the prior art have large measurement errors and low measurement accuracy during use".

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-precision motion reading device for a height measuring instrument spindle, comprising a base, a slide rail mounted on the top of the base, a sliding frame slidably connected to the outer wall of the spindle, a grating ruler affixed to the surface of the spindle, a floating frame slidably connected to the front end of the sliding frame, a power component disposed on the upper surface of the base, a measuring mechanism disposed at the front end of the floating frame, the measuring mechanism comprising a sensing component and a reset component, the sensing component comprising a sensing plate, the rear end of the sensing plate being fixedly connected to the front end of the sliding frame, a Hall sensor mounted at the front end of the floating frame, a clamping frame fixedly connected to the left end of the sliding frame, a probe inserted into the left end of the clamping frame, a pull rope fixedly connected to the top of the floating frame, a support wheel rotatably connected to the top of the spindle, a counterweight fixedly connected to the rear end of the pull rope, a synchronous belt fixedly connected to the bottom end of the floating frame, the rear end of the synchronous belt being fixedly connected to the bottom end of the counterweight, and a measuring grating reading head mounted at the front end of the sliding frame.

[0006] As a further description of the above technical solution:

[0007] The power assembly includes a handwheel, the bottom of which is mounted on the top of the base. A guide wheel is mounted on the inner wall of the base, and a synchronous belt drives the outer wall of the guide wheel. The synchronous belt and the handwheel are connected in a transmission manner.

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

[0009] A sliding rod is fixedly connected to the top of the handwheel, and the counterweight slides on the outer wall of the sliding rod.

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

[0011] The reset assembly includes an upper spring, the top end of which is fixedly connected to the front surface of the floating frame, and the bottom end of which is fixedly connected to a lower rotating rod, which is hinged to the front surface of the floating frame.

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

[0013] An upper rotating rod is hinged to the front surface of the floating frame, and a lower spring is fixedly connected to the outer wall of the upper rotating rod. The bottom end of the lower spring is fixedly connected to the front surface of the floating frame.

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

[0015] A support spring is installed at the front end of the sliding frame, and the bottom end of the support spring is installed at the front end of the sliding frame.

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

[0017] A positioning block is installed at the front end of the sliding frame.

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

[0019] The bottom end of the clamping frame is threaded with a fixing screw.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, rotating the handwheel drives the synchronous belt to rotate, which in turn moves the sliding frame. The movement of the sliding frame moves the floating frame, which in turn moves the probe. When the probe contacts the object being measured, the sliding frame can no longer move. As a result, the sensing plate and the Hall sensor will move relative to each other. When the sensing plate senses the Hall sensor, it records the current grating ruler data. The height of the sliding frame can then be read. Since the sliding frame does not continue to move after the probe touches the object, the overall device has high accuracy during measurement. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0023] Figure 2 In this utility model Figure 1 Enlarged schematic diagram of the three-dimensional structure of part A in the middle;

[0024] Figure 3 This is a rear view of the three-dimensional structure of the overall device in this utility model;

[0025] Figure 4 This is a three-dimensional cross-sectional diagram of the clamping frame in this utility model.

[0026] Legend:

[0027] 1. Base; 2. Spindle; 3. Sliding frame; 4. Floating frame; 5. Clamping frame; 6. Probe; 7. Fixing screw; 8. Pull rope; 9. Counterweight; 10. Handwheel; 11. Slide rod; 12. Upper spring; 13. Lower rotating rod; 14. Upper rotating rod; 15. Lower spring; 16. Hall sensor; 17. Sensing plate; 18. Guide wheel; 19. Synchronous belt; 20. Support wheel; 21. Support spring; 22. Positioning block; 23. Reset frame; 24. Measuring grating reading head; 25. Grating ruler. Detailed Implementation

[0028] 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.

[0029] Reference Figure 1 - Figure 3This utility model provides an embodiment of a high-precision motion reading device for a height measuring instrument spindle, comprising a base 1 for supporting the overall device, a spindle 2 for supporting the movement of a sliding frame 3 mounted on the top of the base 1, a grating ruler 25 attached to the surface of the spindle 2, a sliding frame 3 for supporting the movement of a floating frame 4 slidably connected to the outer wall of the spindle 2, a floating frame 4 slidably connected to the front end of the sliding frame 3, a power component for driving the active movement of the floating frame 4 provided on the upper surface of the base 1, a measuring mechanism for measuring the movement of the floating frame 4 provided at the front end of the floating frame 4, the measuring mechanism including a sensing component and a reset component, the sensing component including a sensing plate 17 for indicating the displacement difference between the sliding frame 3 and the floating frame 4, the rear end of the sensing plate 17 fixedly connected to the front end of the sliding frame 3, when the sliding frame 3 and the floating frame 4 undergo relative displacement, the sensing plate 17 also undergoes relative displacement synchronously with the floating frame 4, and a sensing plate is mounted at the front end of the floating frame 4 for sensing the sensing plate. The device includes a movable Hall sensor 16, a sliding frame 3 with a fixed clamp 5 for supporting the probe 6 at its left end, a probe 6 for contacting the object to be measured inserted into the left end of the clamp 5, a pull rope 8 for connecting the sliding frame 3 and the counterweight 9 fixedly connected to the top end of the floating frame 4, a support wheel 20 for supporting the movement of the pull rope 8 rotatably connected to the top end of the main shaft 2, a counterweight 9 for balancing the weight of the sliding frame 3 and other devices on its front surface fixedly connected to the rear end of the pull rope 8, and an operator can easily operate the entire device by using the counterweight 9 to balance the weight of the sliding frame 3 and other devices on its front surface. A synchronous belt 19 for driving the floating frame 4 is fixedly connected to the bottom end of the floating frame 4, and the rear end of the synchronous belt 19 is fixedly connected to the bottom end of the counterweight 9. When the synchronous belt 19 moves, it can drive the floating frame 4 and the counterweight 9 to move in opposite directions. A measuring grating reading head 24 for measuring the position of the sliding frame 3 at this time is installed at the front end of the sliding frame 3.

[0030] Reference Figure 1 - Figure 3 The power assembly includes a handwheel 10 for driving the synchronous belt 19 to move. The bottom end of the handwheel 10 is mounted on the top end of the base 1. The inner wall of the base 1 is equipped with a guide wheel 18 for guiding the synchronous belt 19 to move. The synchronous belt 19 is driven by the outer wall of the guide wheel 18. The synchronous belt 19 and the handwheel 10 are connected by transmission. The handwheel 10 is existing technology and has a gear shaft installed inside. The synchronous belt 19 can be driven to move by adjusting the handwheel 10. The top end of the handwheel 10 is fixedly connected to a slide rod 11 for supporting the movement of the counterweight 9. The counterweight 9 slides on the outer wall of the slide rod 11. By setting the slide rod 11, the counterweight 9 can be guided to move vertically up and down.

[0031] Reference Figure 1 - Figure 3The reset assembly includes an upper spring 12 for pulling the lower rotating rod 13. The top end of the upper spring 12 is fixedly connected to the front surface of the floating frame 4. The bottom end of the upper spring 12 is fixedly connected to a lower rotating rod 13 for pushing the reset frame 23 upward. The rear end of the lower rotating rod 13 is hinged to the front surface of the floating frame 4. The upper spring 12 will pull the lower rotating rod 13 upward at all times. The front surface of the floating frame 4 is hinged to an upper rotating rod 14 for pushing the reset frame 23 downward. The outer wall of the upper rotating rod 14 is fixedly connected to a lower spring 15 for pulling the upper rotating rod 14. The bottom end of the lower spring 15 is fixedly connected to the front surface of the floating frame 4. The front end of the sliding frame 3 is equipped with a support spring 21 for balancing the displacement between the floating frame 4 and the sliding frame 3. After the measuring head contacts the product surface and the measurement is completed, the measuring head will automatically reset under the action of counterweight and elastic force to prevent personnel from accidentally colliding with the measuring head. The top of the support spring 21 is installed at the front end of the floating frame 4. The bottom end of the clamping frame 5 is threaded with a fixing screw 7 for fixing the probe 6. By rotating the fixing screw 7, the fixing screw 7 can be driven to squeeze the probe 6 and fix it. The front end of the sliding frame 3 is equipped with a positioning block 22 for limiting the maximum movement of the upper rotating rod 14 and the lower rotating rod 13. The front end of the sliding frame 3 is equipped with a reset frame 23.

[0032] Working principle: When measuring the upper surface of an object, the handwheel 10 is rotated to pull the synchronous belt 19, causing the floating frame 4 to move downwards. The floating frame 4 then pulls the counterweight 9 upwards via the pull rope 8. The sliding frame 4 moves downwards, thus causing the floating frame 3 to move synchronously with it. When the lower surface of the probe 6 contacts the object, the probe 6 can no longer move downwards, and the sliding frame 3 will also be fixed and unable to move downwards. At this time, the floating frame 4 will continue to move downwards. Simultaneously, the Hall sensor 16 detects the relative position between the sensor plate 17 and the probe 6. The sensor plate 17 sends a signal to the measuring grating reading head 24, which records the height of the sliding frame 3 at this time. Thus, the position of the probe 6 can be determined, and the height of the upper surface of the object can be known.

[0033] When it is necessary to measure the upper surface of a hole or other shape, the handwheel 10 can be rotated to move the counterweight 9 downward. The downward movement of the counterweight 9 will pull the floating frame 4 upward through the pull rope 8. The floating frame 4 will then pull the sliding frame 3 upward through the support spring 21. When the probe 6 touches the object, the sliding frame 3 will be unable to continue moving upward. At this time, the floating frame 4 will continue to move upward. Meanwhile, the Hall sensor 16 will measure the relative displacement of the sensing plate 17. The sensing plate 17 will send a signal to the measuring grating 24. The measuring grating reading head 24 will record the height of the sliding frame 3 at this time. In this way, the position of the probe 6 can be determined, and the height of the upper surface of the inner wall of the hole can be known.

[0034] 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 high-precision motion reading device for the spindle of a height measuring instrument, comprising a base (1), characterized in that: A main shaft (2) is mounted on the top of the base (1). A grating ruler (25) is attached to the surface of the main shaft (2). A sliding frame (3) is slidably connected to the outer wall of the main shaft (2). A floating frame (4) is slidably connected to the front end of the sliding frame (3). A power assembly is provided on the upper surface of the base (1). A measuring mechanism is provided at the front end of the floating frame (4). The measuring mechanism includes a sensing assembly and a reset assembly. The sensing assembly includes a sensing plate (17). The rear end of the sensing plate (17) is fixedly connected to the front end of the sliding frame (3). The front end of the floating frame (4) is mounted on... The sliding frame (3) is equipped with a Hall sensor (16). A clamping frame (5) is fixedly connected to the left end of the sliding frame (3). A probe (6) is inserted into the left end of the clamping frame (5). A pull rope (8) is fixedly connected to the top end of the floating frame (4). A support wheel (20) is rotatably connected to the top end of the main shaft (2). A counterweight (9) is fixedly connected to the rear end of the pull rope (8). A synchronous belt (19) is fixedly connected to the bottom end of the floating frame (4). The rear end of the synchronous belt (19) is fixedly connected to the bottom end of the counterweight (9). A measuring grating reading head (24) is installed at the front end of the sliding frame (3).

2. The high-precision motion reading device for the spindle of a height measuring instrument according to claim 1, characterized in that: The power assembly includes a handwheel (10), the bottom end of which is mounted on the top of the base (1). A guide wheel (18) is mounted on the inner wall of the base (1). The synchronous belt (19) drives the outer wall of the guide wheel (18). The synchronous belt (19) and the handwheel (10) are connected by transmission.

3. The high-precision motion reading device for the spindle of a height measuring instrument according to claim 2, characterized in that: The top of the handwheel (10) is fixedly connected to a slide rod (11), and the counterweight (9) slides on the outer wall of the slide rod (11).

4. The high-precision motion reading device for the spindle of a height measuring instrument according to claim 1, characterized in that: The reset assembly includes an upper spring (12), the top end of which is fixedly connected to the front surface of the floating frame (4), and the bottom end of which is fixedly connected to a lower rotating rod (13), which is hinged to the front surface of the floating frame (4).

5. The high-precision motion reading device for the spindle of a height measuring instrument according to claim 4, characterized in that: The front surface of the floating frame (4) is hinged with an upper rotating rod (14), and the outer wall of the upper rotating rod (14) is fixedly connected with a lower spring (15). The bottom end of the lower spring (15) is fixedly connected to the front surface of the floating frame (4).

6. The high-precision motion reading device for the spindle of a height measuring instrument according to claim 5, characterized in that: A support spring (21) is installed at the front end of the sliding frame (3), and the upper end of the support spring (21) is installed at the front end of the floating frame (4).

7. A high-precision motion reading device for the spindle of a height measuring instrument according to claim 6, characterized in that: The sliding frame (3) has a positioning block (22) installed at its front end and a reset frame (23) installed at its front end.

8. The high-precision motion reading device for the spindle of a height measuring instrument according to claim 1, characterized in that: The bottom end of the clamping frame (5) is threaded with a fixing screw (7).

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