Intelligent sensor precision machining numerical control machine tool

Abstract

The application discloses a numerical control machine tool for precision machining of intelligent sensors and relates to the technical field of precision. The clamping mechanism comprises a rotating assembly which is connected to the base, a gear ring is connected to the output end of the rotating assembly, the gear ring is rotationally connected to the base, a fixed ring is coaxially fixedly connected to the top of the gear ring, an inclined assembly is connected to the fixed ring, and an electric chuck is connected to the output end of the inclined assembly. The sensor is moved to the eccentric position of the electric chuck through the fine adjustment assembly, so that the polishing assembly forms eccentric polishing effect on the sensor when the electric chuck is rotated by the rotating assembly, different polishing effects are formed on the end surface of the sensor, and the sensor with a welding protrusion, scratches or various surface structures on the end surface and the sensor with different polishing precision can be conveniently polished to form targeted polishing effect.

Description

Technical Field

[0001] This invention relates to the field of precision technology, and in particular to a CNC machine tool for precision machining of intelligent sensors. Background Technology

[0002] A sensor is a device that converts received signals into other desired signal outputs according to certain rules to meet the requirements of information transmission, processing, storage, display, recording, and control. In the sensor manufacturing process, to improve the smoothness and flatness of the sensor surface, precision machining is required. Current technologies often employ grinding techniques to polish the sensor surface.

[0003] Existing precision machining tools for sensors often cause surface damage during processing, such as weld protrusions and corrosion scratches. Therefore, the sensor surface needs to be polished. However, the polishing requirements for weld protrusions and corrosion scratches differ from those for other surfaces. Weld protrusions need to be ground flat, while corrosion scratches need to be polished to be consistent with the surrounding end faces. Furthermore, for sensors used in high-temperature, high-humidity, and corrosive gas environments, it is necessary to completely remove the oxide layer impurities on the sensor surface to enhance corrosion resistance. Over-polishing often reduces the sensor's accuracy. Existing polishing equipment cannot achieve targeted polishing effects when polishing sensors, requiring multiple polishing processes of varying precision, increasing polishing steps and reducing polishing efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing grinding equipment cannot achieve a targeted grinding effect when performing precision grinding on sensors, requiring multiple grinding operations of different precision, which increases the grinding process and reduces grinding efficiency. Therefore, this invention proposes a CNC machine tool for precision machining of intelligent sensors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a CNC machine tool for precision machining of intelligent sensors, comprising a base, and further comprising:

[0006] A clamping mechanism includes a rotating component connected to a base. A geared ring is connected to the output end of the rotating component and is rotatably connected to the base. A fixed ring is coaxially fixed to the top of the geared ring. A tilting component is connected to the fixed ring. An electric chuck is connected to the output end of the tilting component. The electric chuck is concentrically arranged with the fixed ring. The output end of the electric chuck consists of four jaws arranged in a circular array around the center of the electric chuck. A fine-tuning component is connected to each jaw. A connecting block is connected to the output end of the fine-tuning component and is used to drive the connecting block to move along the jaw's movement direction. A locking block is slidably connected to the end of the connecting block away from the jaw. All four locking blocks are in contact with and abut against the outer periphery of the sensor when the electric chuck is working.

[0007] A grinding assembly is provided, wherein a sliding frame is slidably connected to the base, a movable table is slidably connected to the top of the sliding frame, and the grinding assembly is mounted on the movable table and is used to grind the outer surface of the clamped sensor.

[0008] An air-cooled assembly is connected to the movable table, and its output end points towards the working end of the grinding assembly.

[0009] The controller is mounted on the base and is electrically connected to the electric chuck, the first motor, the second motor, the fine-tuning component, and the air-cooling component.

[0010] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the rotating assembly includes a fixed plate, which is fixedly connected to a base. A first motor is mounted on the top of the fixed plate, and the output end of the first motor passes through the fixed plate and is coaxially fixedly connected to a rotating shaft. The bottom end of the rotating shaft is rotatably connected to the base, and a gear is coaxially fixedly connected to the rotating shaft. The gear is located between the fixed plate and the base, and the gear meshes with the outer circumference of a gear ring. The first motor is electrically connected to a controller, which is used to control the working state of the first motor.

[0011] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the tilting assembly includes a second motor, which is installed on the outer side of a fixed ring. The output end of the second motor extends through into the fixed ring and is coaxially fixedly connected to a rotating rod. The end of the rotating rod away from the second motor is rotatably connected to the inner wall of the fixed ring. The electric chuck is fixedly connected to the rotating rod located inside the fixed ring. The second motor is electrically connected to a controller, which is used to control the working state of the second motor.

[0012] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the bottom of the fixed ring is fixedly connected to the gear ring via a support base, and the rotation angle of the electric chuck is greater than the tilt angle of the sensor's tilted end face.

[0013] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the fine-tuning component includes a micro air pump. The output end of the micro air pump is connected to an air pipe, and the input end is connected to the outside. A fixing block is fixedly connected to the side of the chuck near the center of the electric chuck. An air groove is formed in the fixing block. The end of the air pipe away from the micro air pump is connected to the air groove. A connecting block is sealed and slidably connected in the air groove, and the end away from the chuck is sealed and passes through the fixing block. The chuck block is slidably connected in the end of the connecting block that extends out of the air groove. All four micro air pumps are electrically connected to a controller, which is used to control the working state of the four micro air pumps.

[0014] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the controller has an eccentric fine-tuning mode for controlling two opposing micro air pumps to increase the internal air pressure of one of the opposing air tanks and decrease the internal air pressure of the other.

[0015] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the connecting block has a sliding groove at one end of the air groove, the locking block is slidably connected in the sliding groove, and buffer springs are fixedly connected to both ends of the sliding groove, with the end of the buffer spring away from the inner wall of the sliding groove abutting against the locking block.

[0016] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the air-cooling component includes a mounting block, which is fixedly connected to a movable table. The mounting block is concave, with its opening facing away from the movable table, and partially surrounds the outer periphery of the working end of the grinding component at intervals. A fan is mounted on the mounting block, and an air duct is formed inside the mounting block. The input end of the fan is connected to the outside, and its output end is connected to the middle of the air duct. Both ends of the two branches of the air duct are connected to air outlets, and the output direction of both air outlets points towards the working end of the grinding component. The fan is electrically connected to a controller, which is used to control the working state of the fan.

[0017] In the aforementioned CNC machine tool for precision machining of intelligent sensors, an electromagnetic block is installed inside the air duct. Limiting springs are fixedly connected to both ends of the electromagnetic block. A permanent magnet block is fixedly connected to the end of each limiting spring away from the electromagnetic block. Two permanent magnet blocks are slidably connected inside the air duct, corresponding one-to-one with two branches of the air duct, and are spaced apart at the corners of the main and branch sections within the air duct. A distance sensor is installed on the concave inner bottom side of the mounting block. The distance sensor is used to monitor the distance between the sensor being polished and the sensor. Both the electromagnetic block and the distance sensor are electrically connected to a controller. The controller receives signals from the distance sensor and controls the working state of the electromagnetic block.

[0018] In the aforementioned CNC machine tool for precision machining of intelligent sensors, the controller receives a signal from the distance sensor indicating a decrease in the distance between the distance sensor and the surface of the sensor being polished, and controls the electromagnetic block to be energized. After being energized, the electromagnetic block is aligned with the opposite magnetic poles of the permanent magnet block. The controller also receives a signal from the distance sensor indicating an increase in the distance between the distance sensor and the surface of the sensor being polished, and controls the electromagnetic block to be de-energized.

[0019] Compared with existing technologies, the advantages of this invention are:

[0020] 1. This invention, through the setting of a clamping mechanism, allows the sensor to be clamped by an electric chuck during sensor grinding. A rotating component drives the electric chuck to rotate, facilitating comprehensive grinding of the sensor's horizontal end face. A tilting component tilts the electric chuck, allowing the tilted end face of the sensor to be rotated to a horizontal plane, further facilitating grinding of this tilted end face. A fine-tuning component moves the sensor to an off-center position on the electric chuck, creating an off-center grinding effect as the rotating component rotates the chuck. This results in different grinding effects on the sensor end face, making it suitable for sensors with weld protrusions, scratches, or various surface structures, as well as sensors requiring different grinding precisions. This satisfies the grinding needs of different sensor end faces, eliminating the need for multiple grinding operations of varying precision, reducing grinding steps, and increasing grinding efficiency.

[0021] 2. By incorporating a wind-cooling component, this invention allows the distance between the sensor and the distance sensor to continuously move closer and further apart as the clamping mechanism drives the sensor to perform eccentric motion. When the distance between the sensor and the distance sensor decreases, the contact and grinding effect between the grinding component and the sensor is enhanced. The electromagnetic block, under controlled electromagnetic flux, attracts the permanent magnet block, increasing the ventilation opening diameter of the air duct and improving the airflow. Conversely, when the distance between the sensor and the distance sensor increases, the contact and grinding effect between the grinding component and the sensor weakens, and the wind-cooling component reduces the airflow. This creates an adaptive wind-cooling effect on the eccentrically moving sensor, preventing the sensor surface temperature from becoming too high or too low and maintaining the grinding effect on the sensor. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a CNC machine tool for precision machining of intelligent sensors proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the rotating component of a CNC machine tool for precision machining of intelligent sensors, as proposed in this invention.

[0024] Figure 3 This is a schematic diagram of the electric chuck, fixed ring, and rotating assembly of a CNC machine tool for precision machining of intelligent sensors proposed in this invention.

[0025] Figure 4 This is a schematic diagram of the electric chuck, jaws, and tilting assembly of a CNC machine tool for precision machining of intelligent sensors, as proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the structure of a micro-component for precision machining of intelligent sensors in a CNC machine tool, as proposed in this invention.

[0027] Figure 6 This is a half-section isometric view of the fixed block structure of a CNC machine tool for precision machining of intelligent sensors proposed in this invention;

[0028] Figure 7 This is a schematic diagram of the sliding frame and movable table of a CNC machine tool for precision machining of intelligent sensors proposed in this invention;

[0029] Figure 8 This is a schematic diagram of the grinding assembly and movable table of a CNC machine tool for precision machining of intelligent sensors proposed in this invention.

[0030] Figure 9 This is a schematic diagram of the mounting block and fan section of a CNC machine tool for precision machining of intelligent sensors, as proposed in this invention.

[0031] Figure 10 This is a half-section isometric structural diagram of the mounting block of a CNC machine tool for precision machining of intelligent sensors proposed in this invention.

[0032] In the diagram: 1. Base, 11. Controller, 12. Sliding frame, 13. Movable table, 14. Grinding assembly, 2. Gear ring, 21. Fixing plate, 22. First motor, 23. Rotating shaft, 24. Gear, 3. Fixing ring, 31. Second motor, 32. Rotating rod, 33. Electric chuck, 34. Claw, 4. Miniature air pump, 41. Air pipe, 42. Fixing block, 43. Air groove, 44. Connecting block, 45. Locking block, 46. Buffer spring, 5. Mounting block, 51. Fan, 52. Air duct, 53. Electromagnetic block, 54. Distance sensor, 55. Permanent magnet block, 56. Limit spring. Detailed Implementation

[0033] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] Reference Figure 1 A CNC machine tool for precision machining of intelligent sensors includes a base 1, and further includes:

[0035] The clamping mechanism includes a rotating component connected to a base 1. A toothed ring 2 is connected to the output end of the rotating component. The toothed ring 2 is rotatably connected to the base 1. A fixed ring 3 is coaxially fixed to the top of the toothed ring 2. An inclined component is connected to the fixed ring 3. An electric chuck 33 is connected to the output end of the inclined component. The electric chuck 33 is concentrically arranged with the fixed ring 3. The output end of the electric chuck 33 consists of four jaws 34. The four jaws 34 are arranged in a circular array around the center of the electric chuck 33. A fine-tuning component is connected to the jaws 34. A connecting block 44 is connected to the output end of the fine-tuning component and is used to drive the connecting block 44 to move along the direction of movement of the jaws 34. A locking block 45 is slidably connected to the end of the connecting block 44 away from the jaws 34. When the electric chuck 33 is working, all four locking blocks 45 are in contact with and abut against the outer periphery of the sensor.

[0036] Controller 11 is mounted on base 1.

[0037] Reference Figure 2 The rotating assembly includes a fixed plate 21, which is fixedly connected to the base 1. A first motor 22 is mounted on the top of the fixed plate 21. The output end of the first motor 22 passes through the fixed plate 21 and is coaxially fixedly connected to a rotating shaft 23. The bottom end of the rotating shaft 23 is rotatably connected to the base 1. A gear 24 is coaxially fixedly connected to the rotating shaft 23. The gear 24 is located between the fixed plate 21 and the base 1. The gear 24 meshes with the outer periphery of the gear ring 2. The first motor 22 is electrically connected to a controller 11, which is used to control the working state of the first motor 22.

[0038] Reference Figure 3 and Figure 4 The tilting assembly includes a second motor 31, which is mounted on the outer side of the fixed ring 3. The output end of the second motor 31 extends through into the fixed ring 3 and is coaxially fixedly connected to a rotating rod 32. The end of the rotating rod 32 away from the second motor 31 is rotatably connected to the inner wall of the fixed ring 3. An electric chuck 33 is fixedly connected to the rotating rod 32 located inside the ring of the fixed ring 3. The second motor 31 is electrically connected to a controller 11, which is used to control the working state of the second motor 31.

[0039] The bottom of the fixed ring 3 is fixedly connected to the toothed ring 2 via a support base, and the rotation angle of the electric chuck 33 is greater than the tilt angle of the tilted end face of the sensor.

[0040] Reference Figures 4-6The fine-tuning component includes a micro air pump 4, the output end of which is connected to an air pipe 41, and the input end is connected to the outside. A fixed block 42 is fixedly connected to the side of the claw 34 near the center of the electric chuck 33. An air groove 43 is opened in the fixed block 42. The end of the air pipe 41 away from the micro air pump 4 is connected to the air groove 43. A connecting block 44 is sealed and slidably connected in the air groove 43, and the end away from the claw 34 is sealed and passes through the fixed block 42. A locking block 45 is slidably connected in the end of the connecting block 44 that extends out of the air groove 43. All four micro air pumps 4 are electrically connected to the controller 11. The controller 11 is used to control the working status of the four micro air pumps 4.

[0041] The controller has an eccentric fine-tuning mode for controlling two opposing micro air pumps 4 to increase the internal air pressure of one opposing air tank 43 and decrease the internal air pressure of the other.

[0042] The connecting block 44 extends out of the air groove 43 and has a sliding groove at one end. The locking block 45 is slidably connected in the sliding groove. Both ends of the sliding groove are fixedly connected to a buffer spring 46. The end of the buffer spring 46 away from the inner wall of the sliding groove abuts against the locking block 45.

[0043] Reference Figure 7 The grinding component 14 is mounted on the base 1 and a sliding frame 12 is slidably connected to it. A movable table 13 is slidably connected to the top of the sliding frame 12. The grinding component 14 is mounted on the movable table 13 and is used to grind the outer surface of the clamped sensor.

[0044] The grinding component 14 uses existing technology and drives the grinding block to rotate via a drive motor to perform the grinding operation.

[0045] Reference Figures 8-10 The air-cooled component is connected to the movable table 13, and its output end points to the working end of the grinding component 14.

[0046] The air-cooled assembly includes a mounting block 5, which is fixedly connected to the movable table 13. The mounting block 5 is concave and its opening faces away from the movable table 13. It partially surrounds the outer periphery of the working end of the grinding assembly 14 at intervals. A fan 51 is mounted on the mounting block 5. An air duct 52 is opened inside the mounting block 5. The input end of the fan 51 is connected to the outside, and the output end is connected to the middle of the air duct 52. The ends of the two branches of the air duct 52 are connected to air outlets. The output direction of the two air outlets is pointing to the working end of the grinding assembly 14. The fan 51 is electrically connected to the controller 11, which is used to control the working state of the fan 51.

[0047] An electromagnetic block 53 is installed inside the air duct 52. Both ends of the electromagnetic block 53 are fixedly connected to limit springs 56. A permanent magnet block 55 is fixedly connected to the end of the limit spring 56 away from the electromagnetic block 53. The two permanent magnet blocks 55 are slidably connected inside the air duct 52 and correspond one-to-one with the two branches of the air duct 52. They are spaced apart at the corners of the main trunk and branches inside the air duct 52. A distance sensor 54 is installed on the concave inner bottom side of the mounting block 5. The distance sensor 54 is used to monitor the distance between the sensor being polished and itself. Both the electromagnetic block 53 and the distance sensor 54 are electrically connected to the controller 11. The controller receives the signal from the distance sensor 54 and controls the working state of the electromagnetic block 53.

[0048] The controller receives a signal from the distance sensor 54 indicating a decrease in the distance between the distance sensor and the surface of the sensor being polished, and controls the electromagnetic block 53 to be energized. After being energized, the electromagnetic block 53 is aligned with the opposite magnetic poles of the permanent magnet block 55. When the controller receives a signal from the distance sensor 54 indicating an increase in the distance between the distance sensor and the surface of the sensor being polished, it controls the electromagnetic block 53 to be de-energized.

[0049] In this invention, when the sensor needs to be polished, the sensor is placed in the electric chuck 33, and then the controller 11 is turned on to start the electric chuck 33. The four jaws 34 of the electric chuck 33 are controlled to move and clamp the sensor in the center of the electric chuck 33.

[0050] At this time, adjust the position of the sliding frame 12 and the movable table 13 so that the position of the working end of the grinding component 14 is in contact with the sensor. The sensor can be ground by rotating the working end of the grinding component 14.

[0051] Simultaneously, the first motor 22 is started, and its output end drives the rotating shaft 23 to rotate. The rotation of the rotating shaft 23 will drive the gear 24 to rotate coaxially. The rotation of the gear 24 will mesh with the gear ring 2, thereby causing the gear ring 2 to rotate along the end of the base 1. The rotation of the gear ring 2 will drive the fixed ring 3 to rotate coaxially. The rotation of the fixed ring 3 will drive the electric chuck 33 to rotate coaxially, thereby driving the sensor to rotate. The grinding assembly 14 can then grind all positions on the horizontal surface of the sensor.

[0052] During the sensor polishing process, the second motor 31 is started, causing the output end of the second motor 31 to drive the rotating rod 32 to rotate. The rotation of the rotating rod 32 will drive the electric chuck 33 to rotate along the inner wall of the fixed ring 3. At this time, the electric chuck 33 will drive the sensor to move synchronously through the jaws 34. At this time, the angle of the sensor will change from a vertical state to an inclined state, thereby causing the inclined end face on the sensor to tilt and rotate to a horizontal plane, such as the waist-shaped surface of a frustum. At this time, the polishing component 14 can polish the inclined end face on the sensor. The polishing end face of the polishing component 14 is aligned with the inclined surface of the sensor, so that the polishing component 14 can fit and polish the inclined surface of the sensor. This allows the polishing component 14 to polish the sensor accurately, avoids insufficient polishing of the sensor, and improves the subsequent accuracy of the sensor.

[0053] Because the surface of the sensor needs to maintain a high level of precision, it is necessary to precisely polish the surface of the sensor during the polishing process. However, the required precision of polishing varies from sensor to sensor during the production process.

[0054] When precise grinding is required on different positions of the sensor surface, the micro air pump 4 on the chuck 34 is activated. The micro air pump 4 delivers air through the air pipe 41 to the air groove 43 inside the fixed block 42. At this time, the internal air pressure in the air groove 43 increases, which in turn causes the air inside the air groove 43 to exert a thrust on the connecting block 44. The connecting block 44 slides along the inner wall of the air groove 43. The movement of the connecting block 44 causes the chuck 45 to move forward synchronously. At the same time, another set of micro air pumps 4 is activated, which reduces the air pressure inside the other set of air grooves 43, causing the other set of chuck 45 to move backward synchronously. At this time, the position of the sensor is finely adjusted along the movement direction of the chuck 45, so that the sensor deviates from the center of the electric chuck 33.

[0055] This causes the sensor to move eccentrically relative to the axis of the electric chuck 33 when the electric chuck 33 rotates and drives the sensor to move synchronously. As a result, when the grinding component 14 grinds the sensor, it will grind more on the protruding part of the sensor when it rotates eccentrically, and grind less on other parts of the sensor when it rotates eccentrically. This avoids the problem of over-grinding the sensor and causing a decrease in sensor accuracy, thus forming a targeted grinding effect on the sensor surface.

[0056] During the sensor polishing process, the temperature of the sensor surface will rise. If the sensor surface temperature is too high, it will cause a decrease in sensor accuracy. Therefore, it is necessary to control the temperature of the sensor surface.

[0057] At this time, the fan 51 is started, which makes the fan 51 work to introduce the outside air into the air duct 52 opened inside the mounting block 5, and spray it out through the air outlet. The sprayed air can reduce the temperature of the sensor surface.

[0058] When the wind cools the sensor surface, the distance sensor 54 monitors the distance between itself and the sensor surface in real time. When the distance between the distance sensor 54 and the sensor surface decreases, it indicates that the protruding part of the sensor is in contact with the grinding component 14 when it rotates eccentrically. At this time, due to the large friction between the sensor and the grinding component 14, the temperature of the sensor surface will rise faster. At this time, the distance sensor 54 will send an electrical signal to the controller 11, which will energize the electromagnetic block 53. The energized electromagnetic block 53 generates a magnetic field that attracts the permanent magnet block 55. This causes the permanent magnet block 55 to squeeze the limiting spring 56 and slide along the inner wall of the air duct 52, opening the channel between the branch and the main of the air duct 52. At this time, the airflow through the air duct 52 increases, which increases the airflow and improves the efficiency of cooling the sensor surface when the temperature rises.

[0059] At the same time, when the sensor rotates eccentrically away, it can reduce the airflow to maintain the temperature of the sensor surface and avoid the problem of reduced polishing efficiency caused by low temperature.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A CNC machine tool for precision machining of intelligent sensors, comprising a base (1), characterized in that, Also includes: The clamping mechanism includes a rotating component connected to a base (1). A gear ring (2) is connected to the output end of the rotating component. The gear ring (2) is rotatably connected to the base (1). A fixed ring (3) is coaxially fixedly connected to the top of the gear ring (2). A tilting component is connected to the fixed ring (3). An electric chuck (33) is connected to the output end of the tilting component. The electric chuck (33) is concentrically arranged with the fixed ring (3). The output end of the electric chuck (33) is... Four jaws (34) are arranged in a circular array around the center of the electric chuck (33). A fine-tuning component is connected to each jaw (34). The output end of the fine-tuning component is connected to a connecting block (44) and is used to drive the connecting block (44) to move along the direction of movement of the jaw (34). A locking block (45) is slidably connected to the end of the connecting block (44) away from the jaw (34). When the electric chuck (33) is working, all four locking blocks (45) are attached to and abut against the outer periphery of the sensor. Grinding assembly (14), a sliding frame (12) is slidably connected to the base (1), a movable table (13) is slidably connected to the top of the sliding frame (12), the grinding assembly (14) is mounted on the movable table (13) and is used to grind the outer surface of the clamped sensor; Air-cooled assembly, which is connected to the movable table (13) and whose output end points to the working end of the grinding assembly (14); The controller (11) is mounted on the base (1) and is electrically connected to the electric chuck (33), the first motor (22), the second motor (31), the fine-tuning component and the air-cooling component; The air-cooled assembly includes a mounting block (5), which is fixedly connected to the movable table (13). The mounting block (5) is concave and its opening direction is away from the movable table (13). It is semi-enclosed on the outer periphery of the working end of the grinding assembly (14) in a spaced-out state. A fan (51) is installed on the mounting block (5). An air duct (52) is opened in the mounting block (5). The input end of the fan (51) is connected to the outside, and the output end is connected to the middle of the air duct (52). The ends of the two branches of the air duct (52) are connected to air outlets. The output direction of the two air outlets is pointing to the working end of the grinding assembly (14). The fan (51) is electrically connected to the controller (11). The controller (11) is used to control the working state of the fan (51). An electromagnetic block (53) is installed inside the air duct (52). Both ends of the electromagnetic block (53) are fixedly connected to a limit spring (56). A permanent magnet block (55) is fixedly connected to the end of the limit spring (56) away from the electromagnetic block (53). The two permanent magnet blocks (55) are slidably connected inside the air duct (52) and correspond one-to-one with the two branches of the air duct (52). They are spaced at the corners of the main trunk and branches inside the air duct (52). A distance sensor (54) is installed on the concave inner bottom side of the mounting block (5). The distance sensor (54) is used to monitor the distance between the sensor being polished and the sensor. The electromagnetic block (53) and the distance sensor (54) are electrically connected to the controller (11). The controller receives the signal from the distance sensor (54) to control the working state of the electromagnetic block (53).

2. The CNC machine tool for precision machining of intelligent sensors according to claim 1, characterized in that, The rotating assembly includes a fixed plate (21) which is fixedly connected to the base (1). A first motor (22) is mounted on the top of the fixed plate (21). The output end of the first motor (22) passes through the fixed plate (21) and is coaxially fixedly connected to a rotating shaft (23). The bottom end of the rotating shaft (23) is rotatably connected to the base (1). A gear (24) is coaxially fixedly connected to the rotating shaft (23). The gear (24) is located between the fixed plate (21) and the base (1). The gear (24) meshes with the outer periphery of the gear ring (2). The first motor (22) is electrically connected to a controller (11). The controller (11) is used to control the working state of the first motor (22).

3. The CNC machine tool for precision machining of intelligent sensors according to claim 1, characterized in that, The tilting assembly includes a second motor (31), which is installed on the outer side of the fixed ring (3). The output end of the second motor (31) extends through into the fixed ring (3) and is coaxially fixedly connected to a rotating rod (32). The end of the rotating rod (32) away from the second motor (31) is rotatably connected to the inner wall of the fixed ring (3). The electric chuck (33) is fixedly connected to the rotating rod (32) located inside the ring of the fixed ring (3). The second motor (31) is electrically connected to a controller (11), which is used to control the working state of the second motor (31).

4. The CNC machine tool for precision machining of intelligent sensors according to claim 3, characterized in that, The bottom of the fixed ring (3) is fixedly connected to the toothed ring (2) by a support seat, and the rotation angle of the electric chuck (33) is greater than the tilt angle of the tilted end face of the sensor.

5. A CNC machine tool for precision machining of intelligent sensors according to claim 4, characterized in that, The fine-tuning component includes a micro air pump (4), the output end of which is connected to an air pipe (41), and the input end is connected to the outside. The claw (34) is fixedly connected to a fixing block (42) on the side near the center of the electric chuck (33). An air groove (43) is opened in the fixing block (42). The end of the air pipe (41) away from the micro air pump (4) is connected to the air groove (43). The connecting block (44) is sealed and slidably connected in the air groove (43), and the end away from the claw (34) is sealed and penetrates the fixing block (42). The locking block (45) is slidably connected in the end of the connecting block (44) that extends out of the air groove (43). All four micro air pumps (4) are electrically connected to the controller (11). The controller (11) is used to control the working status of the four micro air pumps (4).

6. A CNC machine tool for precision machining of intelligent sensors according to claim 5, characterized in that, The controller has an eccentric fine-tuning mode for controlling two opposing micro air pumps (4) to increase the internal air pressure of one opposing air tank (43) and decrease the internal air pressure of the other.

7. A CNC machine tool for precision machining of intelligent sensors according to claim 5, characterized in that, The connecting block (44) extends out of the air groove (43) and has a sliding groove at one end. The locking block (45) is slidably connected in the sliding groove. Both ends of the sliding groove are fixedly connected to a buffer spring (46). The end of the buffer spring (46) away from the inner wall of the sliding groove abuts against the locking block (45).

8. A CNC machine tool for precision machining of intelligent sensors according to claim 1, characterized in that, The controller receives a signal from the distance sensor (54) indicating that the distance between it and the surface of the polished sensor has decreased, and controls the electromagnetic block (53) to be energized. After being energized, the electromagnetic block (53) is opposite to the magnetic pole of the permanent magnet block (55). The controller also receives a signal from the distance sensor (54) indicating that the distance between it and the surface of the polished sensor has increased, and controls the electromagnetic block (53) to be de-energized.

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