An enhanced high-precision linear motion type end face measuring device

Abstract

The application relates to an enhanced high-precision linear motion type end face measuring device, and relates to the technical field, comprising a measuring mechanism, the measuring mechanism comprising a measuring instrument for measuring the end face of a workpiece, further comprising a frame mechanism for controlling the linear motion of the measuring mechanism, a cleaning mechanism and a blowing mechanism are arranged outside the measuring instrument shell, the influence of the tiny suspended debris generated during the machining of the numerical control machine tool on the measuring precision is solved, a large area cleaning of the whole workshop is not needed, the small area debris between the end face of the workpiece and the measuring instrument lens can be cleaned through the cleaning mechanism, the subsequent machining precision is guaranteed, the detection function of the alignment state of the end face of the workpiece and the measuring instrument lens is possessed, the alignment detection process is simplified, the convenience and accuracy of the alignment operation before measurement are guaranteed, the measuring precision is further guaranteed, and the blowing mechanism forms a circumferential air curtain outside the cleaning area, which can block dust from entering the cleaning area.

Description

Technical Field

[0001] This application relates to the field of detection device technology, and in particular to an enhanced high-precision linear motion end face measuring device. Background Technology

[0002] In the process of machining parts on CNC machine tools, in order to ensure precise tool feed and dimensional accuracy of CNC machined parts, it is usually necessary to measure the position and size of the end face of the part before machining to provide data for the CNC system to perform machining. Therefore, a professional end face measuring device is required.

[0003] For example, Chinese Patent No. CN216283340U discloses a device for measuring end faces, including an end face measuring instrument and a mounting bracket for connecting to a machine tool. It also includes a slider, a first connecting plate, and a slide rail slidably connected to the slider. The end face measuring instrument is fixed on the first connecting plate, the first connecting plate is connected to the slide rail, and the slider is fixedly connected to the mounting bracket. This prior art can leave more space in the processing position and avoid the relatively small space during processing.

[0004] However, the above technologies still have some shortcomings in practical applications: When CNC machine tools process parts, they generate a large amount of waste chips. Some tiny waste chips will be suspended in the air in the workshop. When they are suspended between the end face of the workpiece and the lens of the measuring instrument, they will cause the measuring instrument to deviate and affect subsequent processing. Although cleaning the suspended waste chips in the workshop can solve the problem, the workshop is large and cleaning the entire workshop is very troublesome.

[0005] Therefore, based on the above analysis, there is still room for improvement in existing end-face measurement devices. Summary of the Invention

[0006] To address the issue of airborne debris affecting end-face measurement, this application provides an enhanced high-precision linear motion end-face measuring device, employing the following technical solution. It includes a frame mechanism for controlling the linear motion of the measuring mechanism, and a measuring mechanism mounted on the frame mechanism, the measuring mechanism including a mounting arm and a measuring instrument fixed to the end of the mounting arm.

[0007] The cleaning mechanism, located on the outside of the measuring instrument, includes an annular plate and multiple electrostatic bars. The multiple electrostatic bars are arranged radially on the side of the annular plate facing the end face of the workpiece, and are used to adsorb suspended waste debris in the area between the measuring instrument and the end face of the workpiece.

[0008] The blower mechanism includes an annular tube coaxially arranged with the annular plate, multiple air nozzles evenly distributed around the outside of the measuring instrument and connected to the annular tube, multiple sets of air inlet hoods coaxially arranged with the annular plate and located at the far end of the air nozzles facing the workpiece end face, and pressure-bearing components that are connected to each air inlet hood in a corresponding manner.

[0009] The jet nozzle is used to eject low-speed airflow to form a circumferential air curtain outside the cleaning area. The air inlet hood is used to receive the airflow reflected by the end face of the workpiece. The pressure-bearing component is used to detect the air pressure of the reflected airflow in the corresponding air inlet hood to determine whether the end face of the workpiece is aligned with the lens of the measuring instrument.

[0010] Preferably, the annular plate has multiple threaded grooves on the side facing the workpiece end face, each corresponding to an electrostatic bar. The end of the electrostatic bar on the same side as the threaded groove is equipped with a threaded post that extends into the groove and is threadedly connected to it. The electrostatic bar is fixed on the annular plate by the cooperation of the threaded post and the threaded groove.

[0011] Preferably, the distances from the multiple electrostatic rods to the center of the ring plate are all different.

[0012] Preferably, an air inlet pipe is installed at the input end of the annular pipe, which is connected to the output end of an external low-pressure air pump, and the air jet direction of multiple air nozzles is all facing the end face of the workpiece.

[0013] Preferably, the pressure-bearing component includes multiple cylinders, each cylinder being disposed on the rear side of a corresponding air inlet hood and communicating with the air inlet hood; a piston is slidably disposed inside the cylinder, and a spring is connected between the side of the piston away from the air inlet hood and the inner wall of the cylinder; a pressure sensor with its pressure-bearing surface facing the piston is installed inside the cylinder on the inner side of the spring; an air outlet is provided on the side of the cylinder between the piston and the pressure sensor.

[0014] Preferably, when the piston is pressed against the pressure surface of the pressure sensor, a portion of the air maintains the piston's pressure on the pressure sensor, while the remaining air is discharged from the air outlet.

[0015] Preferably, an outer plate is installed on the side of the annular pipe, an outer cover is fitted on the outside of the air inlet hood, and an inner cover is fitted on the inside. A set of connecting brackets is symmetrically installed on the side of the outer cover, and the outer cover is fixedly connected to the outer plate at the end of the slide rail through the connecting brackets.

[0016] Preferably, the frame mechanism includes a U-shaped base supported on the ground, a clamping plate is rotatably mounted between two vertical plates of the U-shaped base via a pivot, an L-shaped seat aligned with the direction of the measuring instrument is mounted on the upper side of the clamping plate; a set of slides are symmetrically mounted on the L-shaped seat, a slide rail connected to the outer plate is slidably mounted on the slides, an electric cylinder is mounted on the side of the L-shaped seat, the drive end of the electric cylinder is connected to the other end of the slide rail, and the mounting arm is connected to the other end of the slide rail.

[0017] Preferably, the side of the clamping plate is provided with a set of arc-shaped grooves concentric with the rotating shaft, and the two vertical plates of the U-shaped base are provided with through holes corresponding to the positions of the arc-shaped grooves. Bolts are inserted between the arc-shaped grooves and the aligned through holes, and nuts are screwed onto the threaded sections of the bolts. The clamping plate is clamped and fixed between the two vertical plates of the U-shaped base by tightening the nuts.

[0018] In summary, this application includes at least one of the following beneficial technical effects: I. This application uses an electrostatic bar in the cleaning mechanism to adsorb small areas of debris between the workpiece end face and the measuring instrument lens, avoiding detection deviations caused by suspended debris, ensuring subsequent processing accuracy, and solving the impact of tiny suspended debris generated during CNC machine tool processing on measurement accuracy, without the need for large-scale cleaning of the entire workshop.

[0019] 2. The blower mechanism of this application forms a circular air curtain outside the cleaning area, which can block suspended dust in the workshop air from entering the cleaning area between the workpiece end face and the measuring instrument lens, thus protecting the cleaning area. At the same time, it has the function of detecting the alignment status between the workpiece end face and the measuring instrument lens. The airflow ejected by the nozzle is reflected by the workpiece end face and enters the air inlet hood, pushing the piston to press the pressure sensor and triggering the corresponding indicator light to light up. The operator can quickly judge whether the workpiece end face is facing the measuring instrument lens by observing the on and off status of all the indicator lights. If there is any tilt, it can be adjusted in time to further ensure the measurement accuracy. Attached Figure Description

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the state-one structure of this application.

[0022] Figure 2 This is a schematic diagram of the frame structure of this application.

[0023] Figure 3 This is a partial disassembly diagram of the frame structure of this application.

[0024] Figure 4 This is a schematic diagram of the structure surrounding the slide rail in this application.

[0025] Figure 5 This is a schematic diagram of the measuring mechanism structure of this application.

[0026] Figure 6 This is a schematic diagram of the state two structure of this application.

[0027] Figure 7 This is a schematic diagram of the cleanup organization structure in this application.

[0028] Figure 8 This is a front view of the cleanup organization in this application.

[0029] Figure 9 This is a schematic diagram of the disassembled structure of the electrostatic bar in this application.

[0030] Figure 10 This is a schematic diagram of the blower mechanism of this application.

[0031] Figure 11 This is a partial structural diagram of the blower mechanism of this application.

[0032] Figure 12 This is a partial sectional view of the blower mechanism of this application.

[0033] Figure 13 This is a schematic diagram of the working principle of the blower mechanism in this application.

[0034] In the diagram: 1. Frame mechanism; 11. U-shaped base; 12. Clamping plate; 13. L-shaped seat; 14. Slide seat; 15. Slide rail; 16. Electric cylinder one; 17. Arc groove; 18. Through hole; 19. Bolt; 110. Nut; 2. Measuring mechanism; 21. Motor one; 22. Mounting arm; 23. Measuring instrument; 3. Cleaning mechanism; 32. Ring plate; 34. Static bar; 35. Threaded column; 36. Threaded groove; 4. Blowering mechanism; 41. Ring tube; 42. Air nozzle; 43. Air inlet pipe; 44. Connecting frame; 45. Outer cover; 46. Inner cover; 47. Air inlet cover; 48. Cylinder; 49. Air outlet; 410. Piston; 411. Spring; 412. Pressure sensor; 413. Outer plate. Detailed Implementation

[0035] The following is in conjunction with the appendix Figures 1-13 The embodiments of this application will be described in detail.

[0036] This application discloses an enhanced high-precision linear motion end-face measuring device. The blower mechanism forms a circumferential air curtain outside the cleaning area, which can block suspended dust in the workshop air from entering the cleaning area between the workpiece end face and the measuring instrument lens, thus protecting the cleaning area. At the same time, it has the function of detecting the alignment status of the workpiece end face and the measuring instrument lens. The airflow ejected by the nozzle is reflected by the workpiece end face and enters the air inlet hood, pushing the piston to press the pressure sensor and triggering the corresponding indicator light to light up. The operator can quickly judge whether the workpiece end face is facing the measuring instrument lens by the on and off status of all the indicator lights. If there is any tilt, it can be adjusted in time to further ensure the measurement accuracy.

[0037] First embodiment, such as Figure 1 and Figure 5As shown, it includes a measuring mechanism 2, which includes a rectangular mounting arm 22. A measuring instrument 23 is mounted on the side of the mounting arm 22 near the end. It also includes a frame mechanism 1 for controlling the movement of the measuring mechanism 2. In use, the measuring instrument 23 is moved to the end face of the workpiece through the mounting arm 22 via the frame mechanism 1, and then the measuring instrument 23 can perform inspection on the end face of the workpiece.

[0038] The measuring instrument 23 adopts the same model as that proposed in the prior art.

[0039] like Figure 1 and Figure 2 As shown, the frame mechanism 1 includes a U-shaped base 11 supported on the ground. A clamping plate 12 is rotatably mounted between the two vertical plates of the U-shaped base 11 via a rotating shaft. The rotating shaft is the rotation node of the clamping plate 12. An L-shaped seat 13 with the same orientation as the measuring instrument 23 is mounted on the upper side of the clamping plate 12. By deflecting the clamping plate 12 around the rotating node, the L-shaped seat 13 can be driven to deflect synchronously.

[0040] like Figure 2 and Figure 3 As shown, the side of the clamping plate 12 has a set of arc-shaped grooves 17 concentric with the rotating shaft. The two vertical plates of the U-shaped base 11 each have through holes 18 on one side of each arc-shaped groove 17. A bolt 19 is inserted between the arc-shaped groove 17 and the two aligned through holes 18. A suitable nut 110 is screwed onto the threaded section of the bolt 19. The nut of the bolt 19 is pressed against the side of the vertical plate of the U-shaped base 11 on the same side, while the nut 110 presses against the vertical plate of the U-shaped base 11 on the same side. The clamping plate 12 is fixed by the bidirectional pressing of the two vertical plates. Conversely, rotating the nut 110 away from the U-shaped base 11 releases the pressing state and releases the fixation of the clamping plate 12. At this time, the clamping plate 12 can be rotated around the rotation node. After adjustment, the nut 110 is reversed to press against the vertical plate of the U-shaped base 11 again to complete the fixation.

[0041] like Figure 2 and Figure 4 As shown, a set of slide blocks 14 are symmetrically installed on the L-shaped base 13. A slide rail 15 is slidably arranged on the slide block 14. An electric cylinder 16 is installed on the side of the L-shaped base 13, and its driving end is connected to the other end of the slide rail 15. The mounting arm 22 is connected to the other end of the slide rail 15. Before measurement, the measuring instrument 23 is first oriented towards the end face of the workpiece. The electric cylinder 16 is shortened to drive the slide rail 15 to slide on the slide block 14, thereby driving the measuring instrument 23 to move linearly closer to the end face of the workpiece. After the measurement is completed, the electric cylinder 16 is extended, which can drive the measuring instrument 23 away from the end face of the workpiece to reset.

[0042] In summary, rotate the nut 110 away from the U-shaped base 11 to release the clamping plate 12. Rotate the clamping plate 12 around the rotation node, adjust the angle of the L-shaped seat 13 and the measuring instrument 23 to face the workpiece end face, reverse the nut 110 to re-tighten the vertical plate of the U-shaped base 11, and fix the clamping plate 12. During measurement, shorten the electric cylinder 16 to drive the measuring instrument 23 closer to the workpiece end face. After the measurement is completed, extend the electric cylinder 16 to drive the measuring instrument 23 away from the workpiece end face.

[0043] In the first embodiment, the angle deflection of the measuring instrument 23 relies on the operator manually controlling the clamping plate 12 to rotate around a pivot point, which is inconvenient for real-time adjustment during actual measurement. To facilitate the real-time and convenient deflection of the measuring instrument 23, in the second embodiment of this application, a drive motor (not shown) is installed on the side of any vertical plate of the U-shaped base 11. The drive end of the drive motor is connected to the end of the rotating shaft. It should be noted that the rotating shaft is mounted to the vertical plate via a bearing, and the rotating shaft is fixedly mounted to the clamping plate 12. By driving the rotating shaft to rotate through the drive end of the drive motor, the clamping plate 12 can be rotated synchronously, thereby realizing the real-time adjustment of the angle of the measuring instrument 23. In addition, when using the second embodiment, it is necessary to release the rotation restriction of the clamping plate 12 by the bolts 19 and nuts 110 beforehand.

[0044] In the third embodiment of this application, based on the solution of the first embodiment, another solution is provided where the measuring instrument 23 angle can be conveniently deflected in real time, such as... Figure 5 As shown, a lug is fixed to the end of the slide rail 15 near the mounting arm 22, and a motor 21 is mounted on the side of the lug. The mounting arm 22 and the lug are rotatably mounted through a pin, wherein the pin is connected to the drive end of the motor 21 and can drive the mounting arm 22 to deflect around the pin, thereby realizing the real-time adjustment of the angle of the measuring instrument 23.

[0045] It should be noted that both the drive motor and motor 21 are self-locking brake motors with a drive end that are powered off.

[0046] In summary, both the second and third embodiments can achieve real-time adjustment of the angle of the measuring instrument 23. These are two embodiments listed in this application, but the implementable cases of this application are not limited to the above two methods.

[0047] like Figures 6-9 As shown in the fourth embodiment of this application, based on the first or second embodiment, when a CNC machine tool processes a part, it will generate waste chips. Some tiny waste chips will be suspended in the air in the workshop. When they are suspended between the end face of the workpiece and the lens of the measuring instrument, they will cause the measuring instrument to have measurement deviation. The current solution is to clean up the suspended waste chips in the workshop. However, the workshop is large and cleaning the entire workshop is very troublesome.

[0048] Based on this, such as Figures 6-7 As shown, a cleaning mechanism 3 is provided on the outside of the measuring instrument 23. The cleaning mechanism 3 includes a waste adsorption component that is provided on the outside of the measuring instrument 23 to clean up the surrounding waste.

[0049] like Figures 7-8 As shown, the cleaning mechanism 3 also includes an annular plate 32 mounted on the mounting arm 22. The waste adsorption component uses multiple electrostatic rods 34, which are arranged radially on the side of the annular plate 32 and at different distances from the center of the annular plate 32. When the measuring instrument 23 approaches the end face of the workpiece, the electrostatic rods 34 are energized, and the waste around the electrostatic rods 34 can be electrostatically adsorbed onto the surface of the rods. With the differentiated arrangement of each electrostatic rod 34, full coverage adsorption of waste around the measuring instrument 23 can be achieved. After a fixed time, all the electrostatic rods 34 are de-energized, and the operator manually wipes away the waste on the surface of the electrostatic rods 34 with a cloth before turning on the measuring instrument 23 to perform the measurement.

[0050] like Figure 9 As shown, the annular plate 32 has a threaded groove 36 aligned with each electrostatic bar 34 on one side. The end of the electrostatic bar 34 on the same side as the threaded groove 36 is equipped with a threaded post 35 that extends into the groove and is threadedly connected to it. The electrostatic bar 34 is fixed on the annular plate 32 by the cooperation of the threaded post 35 and the threaded groove 36. Rotating the electrostatic bar 34 will rotate the threaded post 35 to unscrew it from the threaded groove 36. Conversely, screwing it in is considered installation. Users can adjust the number of electrostatic bars 34 installed according to the degree of waste in the workshop.

[0051] like Figures 10-13 As shown, in the fifth embodiment of this application, based on the second and fourth embodiments, although the cleaning mechanism 3 adsorbs and cleans the waste around the measuring instrument 23, the air in the workshop is in a flowing state, and waste will still float around the measuring instrument 23. Moreover, in a specific measurement scenario where the measuring instrument 23 needs to be directly facing the end face of the workpiece, the staff cannot visually inspect whether the measuring instrument 23 is directly facing the end face of the workpiece.

[0052] Based on this, such as Figure 6 and Figure 10 As shown, the device also includes a blower mechanism 4, which is used to protect the cleaning area of ​​the cleaning mechanism 3 and to detect whether the lens of the measuring instrument 23 is facing the end face of the workpiece.

[0053] like Figure 10As shown, the blower mechanism 4 includes a set of air nozzles 42 surrounding the outside of the measuring instrument 23. The input ends of all the air nozzles 42 are connected to an annular tube 41 coaxial with the annular plate 32. The end of the slide rail 15 is equipped with an outer plate 413 fixedly connected to the annular tube 41. An air inlet pipe 43 is installed at the input end of the annular tube 41. The air inlet pipe 43 is connected to the output end of an external low-pressure air pump. After cleaning the dust on the surface of the electrostatic bar 34, the low-pressure air pump is started, and the low-speed airflow is sent into the annular tube 41 through the air inlet pipe 43. Then, it is sprayed by the air nozzles 42 onto the end face of the workpiece, forming a circumferential air curtain outside the cleaning area, which can block external dust from entering the cleaning area.

[0054] like Figures 10-13 As shown, a set of air inlet shrouds 47 coaxial with the annular plate 32 is provided at the far end of the jet nozzle 42. The output end of the air inlet shroud 47 is connected to the pressure receiving component. The airflow sprayed by the jet nozzle 42 toward the end face of the workpiece is partly reflected by the end face and enters the pressure receiving component through the air inlet shroud 47 to realize wind force detection.

[0055] like Figures 11-13 As shown, an outer cover 45 is fitted on the outside of the air inlet hood 47, and an inner cover 46 is fitted on the inside. A set of connecting brackets 44 are symmetrically installed on the side of the outer cover 45, which are connected to the outer plate 413. Both the outer cover 45 and the inner cover 46 serve as air guides. When the electric cylinder 36 extends and retracts, moving the outer plate 413, it can simultaneously move the outer cover 45 and the inner cover 46. During inspection, a gap is left between the outer cover 45 and the end face of the workpiece. After the air curtain blows to the end face of the workpiece, part of the airflow is discharged through this gap, and the other part is reflected and evenly enters each air inlet hood 47.

[0056] It should be noted that the end face size of the workpiece must be greater than the outer diameter of the outer cover by 45mm to ensure that the detection function works normally.

[0057] like Figure 11 and Figure 12 As shown, the pressure-bearing assembly includes multiple cylinders 48, each cylinder 48 being disposed on the rear side of a corresponding air inlet shroud 47 and communicating with the air inlet shroud 47. A piston 410 is slidably disposed inside the cylinder 48, and a spring 411 is connected between the side of the piston 410 away from the air inlet shroud 47 and the inner wall of the cylinder 48. A pressure sensor 412 is installed inside the cylinder 48, with its pressure-bearing surface facing the piston 410, located inside the spring 411. An air outlet 49 is opened on the side of the cylinder 48 between the piston 410 and the pressure sensor 412. The airflow entering the air inlet shroud 47 enters the cylinder 48, squeezing the piston 410 to move towards the pressure sensor 412 and compressing the spring 411. When the piston 410 presses against the pressure-bearing surface of the pressure sensor 412, it passes through the air outlet 49, and excess airflow can be discharged from the air outlet 49.

[0058] A controller (not shown) is also installed on the upper side of the L-shaped seat 13, and an indicator light (not shown) is installed on the rear side of the cylinder 48. When the pressure sensor 412 is pressed by the piston 410, it will send a signal to the controller, and the controller will control the indicator light on the rear side of the corresponding cylinder 48 to light up.

[0059] When all indicator lights are on, it means that the gap between the workpiece end face and the outer cover 45 is uniform, i.e., the workpiece end face is facing the lens of the measuring instrument 23. If the workpiece end face is not facing the lens of the measuring instrument 23, it will cause the gap between the end face and the outer cover 45 to be uneven. The gap near the tilt direction will be larger, and most of the airflow will be discharged directly from this gap. The air pressure of the airflow entering the air inlet hood 47 is insufficient, and it cannot push the piston 410 to contact the pressure sensor 412. The indicator light on the rear side of the corresponding cylinder 48 will not light up, indicating that the workpiece end face is tilted in the direction of the indicator light. The operator can adjust the angle of the workpiece end face according to this until all indicator lights are on.

[0060] A distance sensor (not shown) is also provided on the outside of the air inlet shroud 47. Its orientation is the same as that of the lens of the measuring instrument 23. It is used to detect the distance between the outer cover 45 and the end face of the workpiece. When the distance reaches the predetermined value, the distance sensor sends a signal to the controller, and the controller controls the electric cylinder 16 to stop running.

[0061] In summary, the electric cylinder 16 shortens, causing the outer cover 45 to move closer to the workpiece end face. The distance sensor detects the distance between them, and after reaching the predetermined value, it sends a signal to the controller, which then controls the electric cylinder 16 to close. After the cleaning mechanism 3 completes the waste removal, it starts the air pump, sending airflow into the annular pipe 41, and then spraying it onto the workpiece end face through the air nozzle 42, forming a circumferential air curtain outside the cleaning area to prevent external dust from entering. After the air curtain blows to the workpiece end face, part of the airflow is discharged through the gap between the end face and the outer cover 45, and the other part is reflected and enters the air inlet hood 47, and then enters the cylinder 48 to squeeze the piston 410. After the piston 410 presses the pressure sensor 412, the corresponding indicator light illuminates. By observing the on / off state of the indicator light, it is determined whether the workpiece end face is facing the lens of the measuring instrument 23, until all indicator lights are lit, completing the angle calibration.

[0062] This application also discloses a method for using an enhanced high-precision linear motion end-face measuring device, the method comprising the following steps: S1. Pre-operation preparation: Adjust the angles of the L-shaped base 13 and the measuring instrument 23 so that they face the end face of the workpiece. The specific operation is as follows: Rotate the nut 110 away from the U-shaped base 11 to release the pressure and fixation on the clamping plate 12; rotate the clamping plate 12 around the rotation node to adjust the angles of the L-shaped base 13 and the measuring instrument 23 to face the end face of the workpiece; reverse the nut 110 to make it press the vertical plate of the U-shaped base 11 again to fix the clamping plate 12. The preparation work is completed.

[0063] S2. Waste Material Cleaning: After bringing the measuring instrument 23 close to the workpiece end face, the cleaning mechanism 3 cleans the waste material between the end face and the measuring instrument 23. The specific operation is as follows: After the measuring instrument 23 is close to the workpiece end face, the electrostatic rod 34 is energized. The waste material around the electrostatic rod 34 is then electrostatically attracted to its surface. By utilizing the differentiated arrangement of the electrostatic rods 34, full coverage of the waste material around the measuring instrument 23 can be achieved. After a fixed time, all electrostatic rods 34 are de-energized, and the operator manually wipes away the waste material from the surface of the electrostatic rods 34 with a cloth.

[0064] S3. Air Curtain Protection: An air curtain is formed in the cleaning area using the blower mechanism 4 to achieve protection. The specific operation is as follows: After the waste is wiped off the surface of the electrostatic bar 34, the operator quickly starts the external low-pressure air pump, sends the airflow into the annular pipe 41, and then sprays it onto the end face of the workpiece through the air nozzle 42, forming a circumferential air curtain outside the cleaning area to block external dust from entering the cleaning area and avoid affecting the measurement accuracy.

[0065] S4. Angle Judgment: Use the blower mechanism 4 to determine whether the workpiece end face is directly facing the lens of the measuring instrument 23. The specific operation is as follows: After the air curtain blows to the workpiece end face, part of the airflow is discharged through the gap between the end face and the outer cover 45, and the other part is reflected and evenly enters each air inlet hood 47; when all the indicator lights are lit, it means that the gap between the workpiece end face and the outer cover 45 is uniform, that is, the end face is directly facing the lens of the measuring instrument 23; if the end face is not directly facing the lens, the gap in the corresponding tilt direction becomes larger, most of the airflow is discharged directly, the air pressure in the air inlet hood 47 is insufficient, the corresponding indicator light does not light up, indicating that the workpiece end face is tilted in that direction; the operator adjusts the angle of the workpiece end face until all the indicator lights are lit, completing the angle calibration.

[0066] S5. End Face Measurement: The end face of the workpiece is measured using the measuring instrument 23. The specific operation is as follows: After cleaning up the waste and detecting the angle, the measuring instrument 23 is started to measure the end face of the workpiece. After the measurement is completed, the electric cylinder 16 extends, driving the measuring instrument 23 away from the end face of the workpiece to reset.

[0067] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An enhanced high-precision linear motion end-face measuring device, comprising a frame mechanism (1) for controlling the linear motion of a measuring mechanism (2), and a measuring mechanism (2) mounted on the frame mechanism (1), the measuring mechanism (2) comprising a mounting arm (22) and a measuring instrument (23) fixed to the end of the mounting arm (22), characterized in that, Also includes: The cleaning mechanism (3) is located on the outside of the measuring instrument (23) and includes an annular plate (32) and multiple electrostatic bars (34). The multiple electrostatic bars (34) are arranged radially on the side of the annular plate (32) facing the end face of the workpiece, and are used to adsorb suspended waste debris in the area between the measuring instrument (23) and the end face of the workpiece. The blower mechanism (4) includes an annular tube (41) coaxially arranged with the annular plate (32), multiple air nozzles (42) evenly distributed around the outside of the measuring instrument (23) and connected to the annular tube (41), multiple sets of air inlet hoods (47) coaxially arranged with the annular plate (32) and located at the far end of the air nozzles (42) facing the end face of the workpiece, and pressure-bearing components that are connected to each air inlet hood (47) in a corresponding manner. The nozzle (42) is used to spray out a low-speed airflow to form a circular air curtain outside the cleaning area. The air inlet hood (47) is used to receive the airflow reflected by the end face of the workpiece. The pressure-bearing component is used to detect the air pressure of the reflected airflow in the corresponding air inlet hood (47) to determine whether the end face of the workpiece is aligned with the lens of the measuring instrument (23).

2. The enhanced high-precision linear motion end-face measuring device according to claim 1, characterized in that, The annular plate (32) has multiple threaded grooves (36) on one side facing the workpiece end face, which correspond one-to-one with the electrostatic bar (34). The electrostatic bar (34) and the threaded groove (36) are connected by threaded post (35) extending into the groove and threadedly connected to it. The electrostatic bar (34) is fixed on the annular plate (32) by the cooperation of the threaded post (35) and the threaded groove (36).

3. The enhanced high-precision linear motion end-face measuring device according to claim 1, characterized in that, The distances from the multiple electrostatic rods (34) to the center of the ring plate (32) are all different.

4. The enhanced high-precision linear motion end-face measuring device according to claim 1, characterized in that, An air inlet pipe (43) is installed at the input end of the annular pipe (41). The air inlet pipe (43) is connected to the output end of an external low-pressure air pump. The jet direction of multiple jet nozzles (42) is towards the end face of the workpiece.

5. The enhanced high-precision linear motion end-face measuring device according to claim 1, characterized in that, The pressure-bearing component includes multiple cylinders (48), each cylinder (48) is respectively located on the rear side of the corresponding air inlet hood (47) and communicates with the air inlet hood (47); a piston (410) is slidably arranged inside the cylinder (48), and a spring (411) is connected between the side of the piston (410) away from the air inlet hood (47) and the inner wall of the cylinder (48); a pressure sensor (412) with the pressure-bearing surface facing the piston (410) is installed inside the cylinder (48) on the inner side of the spring (411); an air outlet (49) is opened on the side of the cylinder (48) between the piston (410) and the pressure sensor (412).

6. The enhanced high-precision linear motion end-face measuring device according to claim 5, characterized in that, When the piston (410) presses against the pressure surface of the pressure sensor (412), a portion of the air maintains the piston (410) pressing against the pressure sensor (412), and the remaining air is discharged from the air outlet (49).

7. The enhanced high-precision linear motion end-face measuring device according to claim 1, characterized in that, An outer plate (413) is installed on the side of the annular pipe (41). An outer cover (45) is fitted on the outside of the air inlet cover (47), and an inner cover (46) is fitted on the inside. A set of connecting brackets (44) are symmetrically installed on the side of the outer cover (45). The outer cover (45) is fixedly connected to the outer plate (413) at the end of the slide rail (15) through the connecting brackets (44).

8. The enhanced high-precision linear motion end-face measuring device according to claim 1, characterized in that, The frame mechanism (1) includes a U-shaped base (11) supported on the ground. A clamping plate (12) is rotatably installed between the two vertical plates of the U-shaped base (11) via a rotating shaft. An L-shaped seat (13) with the same orientation as the measuring instrument (23) is installed on the upper side of the clamping plate (12). A set of slides (14) are symmetrically installed on the L-shaped seat (13). A slide rail (15) connected to the outer plate (413) is slidably installed on the slide rail (14). An electric cylinder (16) is installed on the side of the L-shaped seat (13). The driving end of the electric cylinder (16) is connected to the other end of the slide rail (15). The mounting arm (22) is connected to the other end of the slide rail (15).

9. The enhanced high-precision linear motion end-face measuring device according to claim 8, characterized in that, The side of the clamping plate (12) is provided with a set of arc grooves (17) concentric with the rotating shaft. The two vertical plates of the U-shaped base (11) are provided with through holes (18) corresponding to the positions of the arc grooves (17). Bolts (19) are inserted between the arc grooves (17) and the aligned through holes (18). Nuts (110) are screwed onto the threaded section of the bolts (19). The clamping plate (12) is clamped and fixed between the two vertical plates of the U-shaped base (11) by tightening the nuts (110).

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