Outer diameter automatic detection equipment and detection method

Abstract

The invention relates to the technical field of laser diameter measuring instruments, and discloses an outer diameter automatic detection device and a detection method, the outer diameter automatic detection device comprises a detection table and a laser diameter measuring instrument, the laser diameter measuring instrument is arranged on the detection table, and the detection table is provided with a moving mechanism, a three-jaw chuck and a tailstock; an adjusting mechanism is further arranged on the detection table, the adjusting mechanism comprises a driving rack and a one-way gear, a ratchet mechanism is arranged in the one-way gear, a cleaning mechanism is further arranged on the detection table, and the cleaning mechanism comprises a pushing assembly, a gas tank and a plurality of nozzles which are horizontally distributed in an array mode. According to the laser diameter measuring instrument, the effect of fully detecting the outer diameter of the transmission shaft is achieved, the detection effect of the laser diameter measuring instrument on the transmission shaft is greatly improved, meanwhile, the surface of the transmission shaft can be cleaned, the accuracy of detection data is improved, the outer diameter of the transmission shaft can be automatically detected, and use convenience is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser diameter gauges, and specifically to an automatic outer diameter detection device and a detection method. Background Technique

[0002] A laser diameter gauge is a high-precision non-contact measurement device based on laser technology, mainly used to measure size parameters such as the outer diameter, width, or thickness of an object, and is widely used in fields such as industrial manufacturing, material processing, and precision instruments. It scans the laser beam through a high-speed rotating multi-faceted mirror or galvanometer. When the laser beam passes through the object to be measured, it is blocked, and the size of the object is calculated based on the time difference of the blocked beam. As an important transmission component in the automotive power system, the transmission shaft mostly needs to be detected for its outer diameter after production, and at this time, a laser diameter gauge is required.

[0003] Chinese Patent CN220552416U discloses an inner and outer diameter detection device that is easy to operate, specifically related to the technical field of hollow shafts, including a diameter gauge, and a support rod is fixedly connected to the bottom end of the diameter gauge. In the present invention, by setting a rotating rod at one end of the first threaded rod, the first connecting rod can drive the positioning rod to move. In the present invention, when it is necessary to detect the inner and outer diameters of a hollow shaft, laser diameter measurement is mostly used to detect the hollow shaft. However, when the laser diameter measurement device is in use, it is usually installed after the production line. Through the inertia of the production line and then through the rollers on the laser diameter measurement device to move the position of the hollow shaft, so that the hollow shaft can move to be detected between the diameter gauges. However, the heights of different production lines are different, and the laser diameter measurement device needs to be adjusted according to the height of the production line. When the gravity at the top of the laser diameter measurement device is too large, the height of the device cannot be fixed, and thus the operation of the device is convenient.

[0004] However, when the above technical solution is in use, as Figure 2 shown, it can only detect the diameter of the AB side of the transmission shaft, resulting in an incomplete detection of the transmission shaft, and thus having certain limitations. At the same time, most existing laser diameter gauges do not have the effect of cleaning the surface of the transmission shaft. When dust adheres to the surface of the transmission shaft, it will affect the detection data of the laser diameter gauge, and manual cleaning is time-consuming and laborious. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an automatic outer diameter detection device and a detection method, which have the advantages of being able to comprehensively detect the outer diameter of the transmission shaft and at the same time clean the surface of the transmission shaft, thereby improving the accuracy of the detection data of the laser diameter gauge for the transmission shaft, and solving the above problems.

[0006] To solve the above technical problems, the present invention provides the following technical solution: An outer diameter automatic detection device, including a detection table and a laser diameter gauge, the laser diameter gauge is arranged on the detection table, the laser diameter gauge is used to detect the outer diameter of the transmission shaft, a moving mechanism, a three-jaw chuck and a tailstock are arranged on the detection table, the moving mechanism is used to drive the laser diameter gauge to reciprocate horizontally on the detection table, and the tailstock and the three-jaw chuck are used to fix the transmission shaft; An adjusting mechanism is further arranged on the detection table, the adjusting mechanism includes a driving rack and a one-way gear, a ratchet mechanism is arranged inside the one-way gear, when the laser diameter gauge moves, it drives the driving rack to contact with the one-way gear, so as to drive the one-way gear to rotate forward, when the one-way gear rotates forward, the ratchet mechanism can drive the three-jaw chuck to rotate; A cleaning mechanism is further arranged on the detection table, the cleaning mechanism includes a pushing component, an air tank and a plurality of nozzles horizontally and arrayedly distributed, the air tank is used to convey compressed gas to the nozzles, the nozzles are used to blow air on the surface of the transmission shaft, when the one-way gear rotates, it drives the pushing component to operate, and the pushing component operates to drive the nozzles to move downwards.

[0007] Preferably, a fixed seat is rotatably connected to the outside of the three-jaw chuck, a sliding seat is fixedly connected to the bottom of the fixed seat, a rotating shaft is fixedly connected to the outside of the three-jaw chuck, a worm gear is fixedly connected to the rotating shaft, and a worm is meshed with the outside of the worm gear, and the worm is installed on the side of the fixed seat away from the three-jaw chuck.

[0008] Preferably, a mounting plate is fixedly connected to the outside of the driving rack, the mounting plate is installed on the laser diameter gauge, the ratchet mechanism is fixedly connected to one end of the worm, and the one-way gear is rotatably connected to the outer end of the worm.

[0009] Preferably, the pushing component includes a bent pipe and a fixing plate, the fixing plate is fixedly connected to the sliding seat, a limiting frame is fixedly connected to one side of the fixing plate, a limiting rod is fixedly connected to the inside of the limiting frame, a sliding plate is slidably connected to the limiting rod, a reset spring is fixedly connected to the bottom surface of the sliding plate, and the end of the reset spring away from the sliding plate is fixedly connected to the limiting frame, a pushing rack is fixedly connected to the outside of the sliding plate, and the pushing rack is meshed with the one-way gear.

[0010] Preferably, a connecting rod and a push rod are respectively and slidably connected to both ends of the inner side of the elbow pipe. One end of the connecting rod away from the elbow pipe is fixedly connected to a connecting plate. The connecting plate is fixedly connected to the top surface of the pushing rack. A connecting spring is fixedly connected to the top surface of the connecting plate. One end of the connecting spring away from the connecting plate is fixedly connected to the elbow pipe. One end of the push rod away from the elbow pipe is fixedly connected to an air pipe. The nozzle is fixedly connected to the air pipe. A compression spring is fixedly connected to the top surface of the air pipe. One end of the compression spring away from the air pipe is fixedly connected to the elbow pipe.

[0011] Preferably, a carrier plate is provided on the top surface of the air tank. An air pump is provided on the carrier plate. When the air pump operates, it can convey compressed air into the air tank. The bottom of the air tank is fixedly connected to a top plate. The top plate is fixedly connected to the test bench. A spring tube is provided on the bottom surface of the air tank. One end of the spring tube away from the air tank passes through the top plate and is fixedly connected to the air pipe.

[0012] Preferably, the moving mechanism includes slide rails and rectangular holes. The slide rails are distributed on both sides of the test bench and are fixedly connected to the test bench. The tailstock, the slide seat, and the laser diameter gauge are all slidably connected to the slide rails.

[0013] Preferably, the rectangular hole is opened on the test bench and is distributed between the slide rails. A reciprocating lead screw is rotatably connected to the inner side of the rectangular hole. The outer end of the reciprocating lead screw is fixedly connected to a motor. The motor is fixedly connected to the test bench. A slider is slidably connected to the reciprocating lead screw. The slider is fixedly connected to the bottom surface of the laser diameter gauge.

[0014] Preferably, a laser detection mechanism is provided inside the laser diameter gauge. When the laser detection mechanism operates, it can detect the diameter of the transmission shaft. A control panel is also provided on the laser diameter gauge.

[0015] A detection method for an outer diameter automatic detection device uses the above-mentioned outer diameter automatic detection device.

[0016] Compared with the prior art, the present invention provides an outer diameter automatic detection device and a detection method, which have the following beneficial effects: 1. In the present invention, when detecting the outer diameter of a transmission shaft, the two ends of the transmission shaft are fixed by a three-jaw chuck and a tailstock. Then, the moving mechanism operates to drive the laser diameter gauge to move towards the three-jaw chuck. As the laser diameter gauge moves, it detects the outer diameter of the transmission shaft. At the same time, the movement of the laser diameter gauge drives the driving rack to move. The driving rack moves into contact with and meshes with the one-way gear. As the laser diameter gauge moves, the driving rack drives the one-way gear to rotate. The rotation of the one-way gear drives the ratchet mechanism to rotate. The rotation of the ratchet mechanism drives the three-jaw chuck to rotate, and the rotation of the three-jaw chuck drives the transmission shaft to rotate by a fixed angle. Then, the moving mechanism drives the laser diameter gauge to move towards the tailstock. Similarly, when the laser diameter gauge moves, it drives the driving rack to move again. At this time, when the driving rack comes into contact with the one-way gear again and drives the one-way gear to rotate, under the action of the ratchet mechanism, the three-jaw chuck cannot rotate. Then, the laser diameter gauge continues to move. Similarly, when the laser diameter gauge moves, it detects the outer diameter of the rotated transmission shaft again. As the moving mechanism continuously operates, the laser diameter gauge moves horizontally back and forth on the detection table, so that the driving rack can drive the three-jaw chuck and the transmission shaft to rotate by a fixed angle continuously, thereby achieving the effect of circumferentially measuring the outer diameter of the transmission shaft, greatly improving the detection effect of the laser diameter gauge on the transmission shaft, and at the same time enabling the laser diameter gauge to fully detect the outer diameter of the transmission shaft.

[0017] 2. In the present invention, during the process of the laser diameter gauge moving towards the three-jaw chuck, the driving rack comes into contact with the one-way gear and, as the laser diameter gauge moves, the driving rack drives the one-way gear to rotate. The rotation of the one-way gear drives the pushing component to operate. The operation of the pushing component drives the nozzle to move downward. After the nozzle moves downward, it blows air to clean the surface of the transmission shaft, thereby improving the accuracy of the data after the laser diameter gauge detects the transmission shaft. Then, when the moving mechanism drives the laser diameter gauge to move towards the tailstock, the driving rack drives the one-way gear to rotate in the reverse direction. At this time, the nozzle is pushed back to its original position by the pushing component, thus avoiding the problem that the nozzle will block the laser diameter gauge, achieving the effect of being able to clean the surface of the transmission shaft, and thereby improving the accuracy of the detection data.

[0018] 3. In the present invention, the moving mechanism automatically drives the laser diameter gauge to move. While the laser diameter gauge is moving, it drives the cleaning mechanism to operate, thereby achieving the effect of automatically detecting and cleaning the transmission shaft, and greatly improving the convenience and practicality of use. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention from the first perspective; Figure 2 is a side sectional view of the transmission shaft; Figure 3 is a schematic diagram of the overall structure of the present invention from the second perspective; Figure 4Side sectional view of the overall three-dimensional structure of the present invention; Figure 5 It is Figure 4 Schematic enlarged view of the structure at position A in; Figure 6 Schematic structural view of the three-jaw chuck and the pushing component in the present invention; Figure 7 Schematic view of the pushing component in the present invention; Figure 8 It is Figure 7 Schematic enlarged view of the structure at position B in; Figure 9 Side sectional schematic view of the one-way gear in the present invention.

[0020] In the figure: 1, inspection table; 2, laser diameter gauge; 21, laser detection mechanism; 22, control panel; 3, moving mechanism; 31, slide rail; 32, rectangular hole; 34, reciprocating lead screw; 35, motor; 36, slider; 4, three-jaw chuck; 41, fixed seat; 42, rotating shaft; 43, worm gear; 44, worm; 45, sliding seat; 5, tailstock; 6, adjusting mechanism; 61, driving rack; 611, mounting plate; 62, one-way gear; 621, ratchet mechanism; 7, cleaning mechanism; 71, pushing component; 711, elbow pipe; 712, fixing plate; 713, limiting frame; 714, limiting rod; 715, sliding plate; 716, return spring; 717, pushing rack; 718, connecting rod; 719, push rod; 7110, connecting plate; 7111, connecting spring; 7112, air pipe; 7113, compression spring; 72, air tank; 721, carrier plate; 722, air pump; 723, top plate; 724, spring tube; 73, nozzle. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes an outer diameter automatic detection device and a detection method.

[0023] Embodiment 1: Please refer to Figures 1-9, an outer diameter automatic detection device, comprising a detection table 1 and a laser diameter gauge 2. The laser diameter gauge 2 is arranged on the detection table 1 and is used to detect the outer diameter of the transmission shaft. A moving mechanism 3, a three-jaw chuck 4 and a tailstock 5 are arranged on the detection table 1. The moving mechanism 3 is used to drive the laser diameter gauge 2 to reciprocate horizontally on the detection table 1, and the tailstock 5 and the three-jaw chuck 4 are used to fix the transmission shaft; An adjusting mechanism 6 is further arranged on the detection table 1. The adjusting mechanism 6 includes a driving rack 61 and a one-way gear 62. A ratchet mechanism 621 is arranged inside the one-way gear 62. When the laser diameter gauge 2 moves, it drives the driving rack 61 to contact the one-way gear 62, thereby driving the one-way gear 62 to rotate forward. When the one-way gear 62 rotates forward, the ratchet mechanism 621 can drive the three-jaw chuck 4 to rotate; A cleaning mechanism 7 is further arranged on the detection table 1. The cleaning mechanism 7 includes a pushing component 71, an air tank 72 and a plurality of spray heads 73 distributed in a horizontal array. The air tank 72 is used to convey compressed gas to the spray heads 73, and the spray heads 73 are used to blow air on the surface of the transmission shaft. When the one-way gear 62 rotates, it drives the pushing component 71 to operate, and the operation of the pushing component 71 drives the spray heads 73 to move downward.

[0024] During use, both ends of the drive shaft to be detected are fixed by the tailstock 5 and the three-jaw chuck 4. Then, the laser diameter gauge 2 is driven by the moving mechanism 3 to move towards the three-jaw chuck 4. The movement of the laser diameter gauge 2 drives the driving rack 61 to move. Then, the driving rack 61 contacts the one-way gear 62. As the laser diameter gauge 2 moves, the driving rack 61 drives the one-way gear 62 to rotate. The rotation of the one-way gear 62 drives the ratchet mechanism 621 inside it to rotate. After the ratchet mechanism 621 rotates, the three-jaw chuck 4 is driven to rotate at a fixed angle. At the same time, after the one-way gear 62 rotates, it drives the pushing assembly 71 to operate. The operation of the pushing assembly 71 drives the nozzle 73 to move downward. After the nozzle 73 moves downward, it blows air to clean the surface of the rotated drive shaft. Then, the moving mechanism 3 drives the laser diameter gauge 2 to move towards the tailstock 5. At this time, the driving rack 61 drives the one-way gear 62 to rotate again. At this time, under the action of the ratchet mechanism 621 inside the one-way gear 62, the three-jaw chuck 4 and the drive shaft cannot rotate anymore, thus ensuring that the position of the drive shaft will not change. And the one-way gear 62 will be driven by the driving rack 61 to rotate in the reverse direction. At this time, the one-way gear 62 drives the pushing assembly 71 to push the nozzle 73 back to its original position. Then, the moving mechanism 3 drives the laser diameter gauge 2 to continue moving towards the tailstock 5. During the movement of the laser diameter gauge 2, it detects the diameter of the cleaned drive shaft. As the moving mechanism 3 drives the laser diameter gauge 2 to reciprocate horizontally on the inspection table 1, the drive shaft can continuously rotate at a fixed angle. At the same time, the pushing assembly 71 can also drive the nozzle 73 to continuously blow air to clean the surface of the drive shaft. Furthermore, the laser diameter gauge 2 can fully detect the outer diameter of the drive shaft. At the same time, the nozzle 73 can also ensure that when the laser diameter gauge 2 detects the drive shaft, no foreign objects will adhere to the drive shaft, thus affecting the accuracy of the detection data of the laser diameter gauge 2.

[0025] It should be noted that when the laser diameter gauge 2 moves for the first time, it will not detect the drive shaft, avoiding the problem that if foreign objects adhere to the surface of the drive shaft during the first detection of the uncleaned drive shaft, it will affect the detection data of the laser diameter gauge 2.

[0026] Embodiment 2: Refer to Figures 1-9, different from the first embodiment above, the moving mechanism 3 includes a slide rail 31 and a rectangular hole 32. The slide rails 31 are distributed on both sides of the inspection table 1 and are fixedly connected to the inspection table 1. The tailstock 5, the slide block 45 and the laser diameter gauge 2 are all slidably connected to the slide rail 31. The rectangular hole 32 is opened on the inspection table 1 and is distributed between the slide rails 31. A reciprocating lead screw 34 is rotatably connected to the inner side of the rectangular hole 32. The outer end of the reciprocating lead screw 34 is fixedly connected to a motor 35. The motor 35 is fixedly connected to the inspection table 1. A slider 36 is slidably connected to the reciprocating lead screw 34. The slider 36 is fixedly connected to the bottom surface of the laser diameter gauge 2. A laser detection mechanism 21 is provided inside the laser diameter gauge 2. When the laser detection mechanism 21 operates, it can detect the diameter of the transmission shaft. A control panel 22 is also provided on the laser diameter gauge 2; When detecting the transmission shaft, start the motor 35. The operation of the motor 35 drives the reciprocating lead screw 34 to rotate. The rotation of the reciprocating lead screw 34 drives the slider 36 to move. The movement of the slider 36 drives the laser diameter gauge 2 to move along the slide rail 31. When it is necessary to detect the transmission shaft, drive the laser detection mechanism 21 to operate through the control panel 22. Then, as the reciprocating lead screw 34 continues to rotate, the slider 36 can drive the laser diameter gauge 2 to perform horizontal reciprocating movement. When the laser diameter gauge 2 reciprocates, it can detect the outer diameter of the transmission shaft.

[0027] Embodiment Three, refer to Figures 1-9 , different from the second embodiment above, a fixed seat 41 is rotatably connected to the outside of the three-jaw chuck 4. The bottom of the fixed seat 41 is fixedly connected to a slide block 45. A rotating shaft 42 is fixedly connected to the outside of the three-jaw chuck 4. A worm gear 43 is fixedly connected to the rotating shaft 42. A worm 44 is engaged with the outside of the worm gear 43. The worm 44 is installed on the side of the fixed seat 41 away from the three-jaw chuck 4. A mounting plate 611 is fixedly connected to the outside of the driving rack 61. The mounting plate 611 is installed on the laser diameter gauge 2. A ratchet mechanism 621 is fixedly connected to one end of the worm 44, and a one-way gear 62 is rotatably connected to the outer end of the worm 44; When the moving mechanism 3 drives the laser diameter gauge 2 to move towards the three-jaw chuck 4, the laser diameter gauge 2 drives the mounting plate 611 to move. The movement of the mounting plate 611 drives the driving rack 61 to move. After the driving rack 61 moves, it contacts and meshes with the one-way gear 62. Then, as the laser diameter gauge 2 moves, the driving rack 61 drives the one-way gear 62 to rotate. The rotation of the one-way gear 62 drives the ratchet mechanism 621 to rotate. The rotation of the ratchet mechanism 621 drives the worm 44 to rotate. The rotation of the worm 44 drives the worm gear 43 to rotate. The rotation of the worm gear 43 drives the rotating shaft 42 to rotate. The rotation of the rotating shaft 42 drives the three-jaw chuck 4 to rotate. The rotation of the three-jaw chuck 4 drives the transmission shaft to rotate. Limited by the length of the driving rack 61, the driving rack 61 can only drive the one-way gear 62 to rotate by a fixed angle. When the moving mechanism 3 drives the laser diameter gauge 2 to move towards the tailstock 5, the driving rack 61 contacts the one-way gear 62 again. Then, the driving rack 61 drives the one-way gear 62 to rotate in the reverse direction. At this time, the ratchet mechanism 621 in the one-way gear 62 cannot transmit the power of the one-way gear 62, resulting in the worm 44 being unable to rotate again. At this time, the angle of the three-jaw chuck 4 is fixed by the cooperation of the worm 44 and the worm gear 43.

[0028] Embodiment 4, refer to Figures 1-9, different from the third embodiment above, the pushing component 71 includes an elbow pipe 711 and a fixing plate 712. The fixing plate 712 is fixedly connected to the sliding seat 45. One side of the fixing plate 712 is fixedly connected with a limiting frame 713. The inner side of the limiting frame 713 is fixedly connected with a limiting rod 714. A sliding plate 715 is slidably connected to the limiting rod 714. The bottom surface of the sliding plate 715 is fixedly connected with a return spring 716. The end of the return spring 716 away from the sliding plate 715 is fixedly connected to the limiting frame 713. The outer side of the sliding plate 715 is fixedly connected with a pushing rack 717. The pushing rack 717 meshes with the one-way gear 62. The inner sides of both ends of the elbow pipe 711 are respectively slidably connected with a connecting rod 718 and a push rod 719. Hydraulic oil is filled between the connecting rod 718 and the push rod 719. The hydraulic oil is distributed in the elbow pipe 711. The end of the connecting rod 718 away from the elbow pipe 711 is fixedly connected with a connecting plate 7110. The connecting plate 7110 is fixedly connected to the top surface of the pushing rack 717. The top surface of the connecting plate 7110 is fixedly connected with a connecting spring 7111. The end of the connecting spring 7111 away from the connecting plate 7110 is fixedly connected to the elbow pipe 711. The end of the push rod 719 away from the elbow pipe 711 is fixedly connected with an air pipe 7112. The nozzle 73 is fixedly connected to the air pipe 7112. The top surface of the air pipe 7112 is fixedly connected with a compression spring 7113. The end of the compression spring 7113 away from the air pipe 7112 is fixedly connected to the elbow pipe 711. A carrier plate 721 is arranged on the top surface of the air tank 72. An air pump 722 is arranged on the carrier plate 721. When the air pump 722 operates, it can transport compressed air into the air tank 72. The bottom of the air tank 72 is fixedly connected with a top plate 723. The top plate 723 is fixedly connected to the detection table 1. A spring tube 724 is arranged on the bottom surface of the air tank 72. The end of the spring tube 724 away from the air tank 72 passes through the top plate 723 and is fixedly connected to the air pipe 7112; By continuously transporting compressed air into the air tank 72 through the operation of the air pump 722, when the one-way gear 62 rotates, the one-way gear 62 drives the pushing rack 717 to move. The movement of the pushing rack 717 drives the sliding plate 715 to move along the limiting rod 714 and compresses the return spring 716. The movement of the pushing rack 717 drives the connecting plate 7110 to move upward. The movement of the connecting plate 7110 drives the connecting rod 718 to move. The movement of the connecting rod 718 compresses the connecting spring 7111 and transmits the pressure to the hydraulic oil in the elbow pipe 711. Then the hydraulic oil transmits the pressure to the push rod 719. At this time, the push rod 719 is pushed out of the elbow pipe 711 by the hydraulic oil. The movement of the push rod 719 drives the air pipe 7112 to move downward and stretches the compression spring 7113. The downward movement of the air pipe 7112 drives the nozzle 73 to move downward. After the nozzle 73 moves downward, it blows and cleans the surface of the rotated transmission shaft. When the driving rack 61 drives the one-way gear 62 to rotate in the reverse direction, the one-way gear 62 drives the pushing rack 717 to return to its original position. At this time, the connecting rod 718, the connecting plate 7110, the push rod 719 and the air pipe 7112 are all pushed back to their original positions.

[0029] During actual use, a pressure sensor is also provided inside the gas cylinder 72. After the pressure inside the gas cylinder 72 reaches the threshold value, the air pump 722 stops working. At the same time, an electric valve is provided at the connection between the gas cylinder 72 and the bourdon tube 724. A push rod is provided on the air pipe 7112, and a push switch is provided inside the top plate 723. The push switch is used to drive the opening and closing of the electric valve. In the initial state, the push rod on the air pipe 7112 contacts the push switch, and at this time the electric valve is closed, resulting in the gas inside the gas cylinder 72 being unable to enter the bourdon tube 724. When the push rod 719 drives the air pipe 7112 to move downward, the push rod on the air pipe 7112 separates from the push switch, and at this time the electric valve opens. At this time, the gas inside the gas cylinder 72 enters the bourdon tube 724, and then enters the air pipe 7112 and is sprayed out through the nozzle 73 on the air pipe 7112.

[0030] A detection method for an outer diameter automatic detection device uses the above-mentioned outer diameter automatic detection device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outer diameter automatic detection device, comprising a detection table and a laser diameter gauge. The laser diameter gauge is arranged on the detection table, and the laser diameter gauge is used for detecting the outer diameter of a transmission shaft. It is characterized in that: A moving mechanism, a three-jaw chuck and a tailstock are arranged on the detection table. The moving mechanism is used to drive the laser diameter gauge to reciprocate horizontally on the detection table, and the tailstock and the three-jaw chuck are used to fix the transmission shaft. An adjusting mechanism is further arranged on the detection table. The adjusting mechanism includes a driving rack and a one-way gear. A ratchet mechanism is arranged inside the one-way gear. When the laser diameter gauge moves, it drives the driving rack to contact the one-way gear, thereby driving the one-way gear to rotate forward. When the one-way gear rotates forward, the ratchet mechanism can drive the three-jaw chuck to rotate. A cleaning mechanism is further arranged on the detection table. The cleaning mechanism includes a pushing component, an air tank and a plurality of nozzles horizontally and arrayedly distributed. The air tank is used to convey compressed gas to the nozzles, and the nozzles are used to blow air on the surface of the transmission shaft. When the one-way gear rotates, it drives the pushing component to operate, and the pushing component operates to drive the nozzles to move downward.

2. An outer diameter automatic detection device according to claim 1, characterized in that: A fixed seat is rotatably connected to the outside of the three-jaw chuck. The bottom of the fixed seat is fixedly connected with a sliding seat. A rotating shaft is fixedly connected to the outside of the three-jaw chuck, and a worm gear is fixedly connected to the rotating shaft. A worm is meshed with the outside of the worm gear, and the worm is installed on one side of the fixed seat away from the three-jaw chuck.

3. An outer diameter automatic detection device according to claim 2, characterized in that: An installation plate is fixedly connected to the outside of the driving rack. The installation plate is installed on the laser diameter gauge. The ratchet mechanism is fixedly connected to one end of the worm, and the one-way gear is rotatably connected to the outer end of the worm.

4. The automatic outer diameter detection device according to claim 3, characterized in that: The pushing component includes a bent pipe and a fixing plate. The fixing plate is fixedly connected to the sliding seat. A limiting frame is fixedly connected to one side of the fixing plate. A limiting rod is fixedly connected to the inside of the limiting frame. A sliding plate is slidably connected to the limiting rod. A reset spring is fixedly connected to the bottom surface of the sliding plate. One end of the reset spring away from the sliding plate is fixedly connected to the limiting frame. A pushing rack is fixedly connected to the outside of the sliding plate, and the pushing rack is meshed with the one-way gear.

5. An outer diameter automatic detection device according to claim 4, characterized in that: Two ends of the inside of the bent pipe are respectively slidably connected with a connecting rod and a push rod. One end of the connecting rod away from the bent pipe is fixedly connected with a connecting plate. The connecting plate is fixedly connected to the top surface of the pushing rack. A connecting spring is fixedly connected to the top surface of the connecting plate. One end of the connecting spring away from the connecting plate is fixedly connected to the bent pipe. One end of the push rod away from the bent pipe is fixedly connected with an air pipe. The nozzle is fixedly connected to the air pipe. A compression spring is fixedly connected to the top surface of the air pipe. One end of the compression spring away from the air pipe is fixedly connected to the bent pipe.

6. The automatic outer diameter detection device according to claim 5, characterized in that: A carrier plate is arranged on the top surface of the air tank. An air pump is arranged on the carrier plate. When the air pump operates, it can convey compressed air into the air tank. The bottom of the air tank is fixedly connected with a top plate. The top plate is fixedly connected to the detection table. A spring pipe is arranged on the bottom surface of the air tank. One end of the spring pipe away from the air tank passes through the top plate and is fixedly connected to the air pipe.

7. An outer diameter automatic detection device according to claim 6, characterized in that: The moving mechanism includes slide rails and rectangular holes. The slide rails are distributed on both sides of the inspection table, and the slide rails are fixedly connected to the inspection table. The tailstock, the slide block and the laser diameter gauge are all slidably connected to the slide rails.

8. An outer diameter automatic detection device according to claim 7, characterized in that: The rectangular holes are formed in the inspection table and are distributed between the slide rails. A reciprocating lead screw is rotatably connected to the inner side of the rectangular hole. The outer end of the reciprocating lead screw is fixedly connected with a motor, and the motor is fixedly connected to the inspection table. A slider is slidably connected to the reciprocating lead screw, and the slider is fixedly connected to the bottom surface of the laser diameter gauge.

9. An outer diameter automatic detection device according to claim 1, characterized in that: A laser detection mechanism is arranged inside the laser diameter gauge. When the laser detection mechanism operates, it can detect the diameter of the transmission shaft. A control panel is also arranged on the laser diameter gauge.

10. A detection method for an outer diameter automatic detection device, characterized in that: The outer diameter automatic detection equipment as described in any one of claims 1-9 is used.

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