Gear surface size laser detection device

Abstract

The present application relates to gear surface size laser detection device, including workbench, workbench is provided with rotating shaft and rotating disc, rotating disc upper surface is provided with standard gear;Rotating shaft penetrates standard gear, the upper end of rotating shaft is provided with centering inner hole clamping mechanism;The one end of workbench is provided with feeding conveying mechanism, the other end is provided with discharging conveying mechanism, and the workbench is provided with gear feeding and discharging mechanism;The upper portion of workbench is provided with standard correction block, and the standard correction block is connected with first translation driving mechanism;The upper portion of standard gear is provided with upper laser scanner, and the lower portion of standard gear is provided with lower laser scanner, and the side of standard gear is provided with side laser scanner, and the side laser scanner, upper laser scanner and lower laser scanner are all connected with controller.The present application can compare the size difference of standard gear and measured gear, and the size error of measured gear can be obtained more intuitively, the accuracy of detection is higher, and the gear with unqualified size can be conveniently trimmed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gear detection, and particularly relates to a gear surface size laser detection device. BACKGROUND

[0002] After gear machining, size detection needs to be performed to facilitate control of machining quality. At present, manual detection is usually performed by using conventional detection tools such as callipers, gear spacing gauges, and outer diameter micrometers, which has low efficiency, large manual operation error, and poor accuracy. An application No. CN202411423400.3 discloses a gear detection device, which uses a first infrared scanner and a second infrared scanner to respectively scan gear end faces and circumferential surfaces to obtain gear profile sizes. However, the first infrared scanner can only scan one end face of the gear, and cannot simultaneously scan two end faces, which affects the accuracy of the detection structure. In addition, the device needs manual fixing of the gear to be detected on the workbench, and cannot realize automatic fixing, which is inconvenient for continuous detection of multiple gears. SUMMARY

[0003] The application aims to provide a gear surface size laser detection device, which has higher detection accuracy and can realize automatic and continuous detection.

[0004] To solve the above problems, the application adopts the technical scheme of a gear surface size laser detection device, which comprises a workbench,

[0005] A vertical rotating shaft and a plurality of vertical support columns are arranged on the workbench, the top of the support column is provided with a horizontal rotating disc, and a standard gear is arranged on the upper surface of the rotating disc; the rotating shaft is coaxial with the standard gear, and the rotating shaft penetrates the rotating disc and the standard gear, the upper end of the rotating shaft is provided with a centering inner hole clamping mechanism for simultaneously positioning the standard gear and the gear to be detected, and the lower end of the rotating shaft is connected with a first rotating driving mechanism;

[0006] One end of the workbench is provided with an inlet conveying mechanism, and the other end is provided with an outlet conveying mechanism, and a gear feeding and discharging mechanism is arranged on the workbench;

[0007] A standard correction block is arranged above the workbench, and the standard correction block is connected with a first translation driving mechanism for driving the standard correction block to move radially along the standard gear;

[0008] An upper laser scanner is arranged above the standard gear, a lower laser scanner is arranged below the standard gear, and a side laser scanner is arranged on one side of the standard gear, and the side laser scanner, the upper laser scanner, and the lower laser scanner are all connected with a controller.

[0009] Further, the gear feeding and discharging mechanism comprises a vertical rotating arm connected with a second rotating driving mechanism; a lifting arm is arranged in the rotating arm and connected with a lifting driving mechanism; the upper end of the lifting arm extends out of the rotating arm and is fixedly provided with a horizontal cantilever pipe, and a gear grabbing mechanism is arranged on the cantilever pipe.

[0010] Further, the gear grabbing mechanism comprises an adjusting motor 43 arranged at the bottom of the cantilever pipe 18, and the main shaft of the adjusting motor 43 is connected with a horizontal positioning disc, the lower surface of the positioning disc is provided with a plurality of suction cups, and the suction cups are connected with a first air supply and exhaust mechanism.

[0011] Further, the lower surface of the standard gear is provided with a clamping block, and the upper surface of the rotating disc is provided with a clamping groove, and the clamping block is clamped into the clamping groove.

[0012] Further, the rotating shaft is a hollow shaft, the centering inner hole clamping mechanism comprises a piston and a push rod, the piston is located in the rotating shaft and is in sliding fit with the rotating shaft, the lower end of the rotating shaft is connected with a second air supply and exhaust mechanism through a rotary joint, one end of the push rod is fixedly connected with the piston, and the other end is provided with a circular truncated cone-shaped ejector rod; the upper end of the rotating shaft is provided with three positioning grooves which are uniformly distributed around the center of the rotating shaft, one elastic block is arranged in each positioning groove and is in sliding fit with the positioning groove, arc-shaped limiting blocks are arranged on one side of the elastic blocks in the rotating shaft, first elastic members are arranged between the outer wall of the limiting blocks and the inner wall of the rotating shaft, the three limiting blocks enclose a circular truncated cone-shaped cavity, and the outer wall of the ejector rod can be attached to the inner wall of the limiting blocks.

[0013] Further, the elastic block comprises two elastic portions and a transmission portion, the outer wall of the elastic portion is an arc-shaped wall which can be attached to the inner hole of the standard gear, the inner wall of each elastic portion is provided with a guide column, the transmission portion is provided with a guide hole on the side surface facing the elastic portion, the guide column extends into the guide hole and is in sliding fit with the guide hole, a pressure sensor is arranged on the side wall of the transmission portion facing the elastic portion, and the pressure sensor is fixedly connected with the elastic portion through a second elastic member.

[0014] Further, the upper laser scanner is mounted on a sliding seat, the sliding seat is mounted on a horizontal guide rail, and the sliding seat is connected with a second translation driving mechanism for driving the sliding seat to move; and the lower laser scanner is fixedly mounted below the edge of the standard gear.

[0015] Further, the sliding seat is provided with a marking mechanism.

[0016] Further, the marking mechanism comprises a lifting mechanism, a lifting frame is connected to the lower end of the lifting mechanism, a plurality of vertical marking barrels are arranged on the lifting frame, a marking template is arranged at the lower end of the marking barrel, the marking template is provided with a hollow, a spray head is arranged in each marking barrel, each spray head is connected with a flexible conveying pipe through a valve, and the conveying pipe is connected with a pigment storage box through a pump.

[0017] The beneficial effects of the present application are: in the present application, the machined gear is conveyed to the vicinity of the workbench through the feeding conveying mechanism, then the gear feeding and discharging mechanism is used to automatically feed and discharge the gear to move the gear to the rotating shaft, the centering inner hole clamping mechanism is used to position and fix the standard gear and the measured gear, then the side laser scanner, the upper laser scanner and the lower laser scanner are used to scan the upper end surface of the measured gear, the side surface of the measured gear and the standard gear and the lower end surface of the standard gear respectively, and the size error of the measured gear is calculated according to the scanning structure. After the detection is completed, the gear feeding and discharging mechanism is used to automatically move the measured gear to the discharging conveying mechanism.

[0018] It can be seen that the present application can realize batch continuous detection of gears, and manual feeding and discharging is not required, so that the detection efficiency is improved.

[0019] The present application can obtain the size error of the measured gear more intuitively by comparing the size difference between the standard gear and the measured gear, the detection accuracy is higher, and the gears with unqualified size can be easily trimmed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a front view of the present application;

[0021] Figure 2 is Figure 1 a sectional view of A-A in the present application;

[0022] Figure 3 is Figure 1 an enlarged schematic view of part B in the present application;

[0023] Figure 4 is Figure 3 a sectional view of C-C in the present application;

[0024] Figure 5 is Figure 4 an enlarged schematic view of part D in the present application;

[0025] Figure 6 is a top view of a standard correction block;

[0026] Reference numerals: 1—Workbench; 2—Feeding conveyor mechanism; 3—Discharge conveyor mechanism; 4—Support column; 5—Turntable; 6—Rotating shaft; 7—First rotation drive mechanism; 8—Standard gear; 9—Standard calibration block; 10—First translation drive mechanism; 11—Second air supply and exhaust mechanism; 12—Upper laser scanner; 13—Lower laser scanner; 14—Rotating arm; 15—Second rotation drive mechanism; 16—Lifting arm; 17—Lifting drive mechanism; 18—Cantilever tube; 19—Positioning plate; 20—Controller; 21—Suction cup; 22—First air supply and exhaust mechanism; 23—Piston ; 24—Push rod; 25—Rotary joint; 26—Tensioning block; 261—Tensioning part; 262—Transmission part; 263—Guide column; 264—Second elastic element; 265—Pressure sensor; 27—Limiting block; 28—First elastic element; 29—Top rod; 30—Slide seat; 31—Guide rail; 32—Second translation drive mechanism; 33—Side laser scanner; 34—Lifting mechanism; 35—Lifting frame; 36—Marking cylinder; 37—Marking template; 38—Sprayer head; 39—Valve; 40—Delivery pipe; 41—Pump; 42—Pigment storage box; 43—Adjusting motor. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] The gear surface dimension laser detection device of the present invention, such as Figures 1 to 6 As shown, it includes a worktable 1, which is horizontally positioned and has multiple support legs at the bottom to ensure that the worktable 1 is at a suitable height.

[0029] The worktable 1 is equipped with a vertical rotating shaft 6 and multiple vertical support columns 4. A horizontal turntable 5 is mounted on top of each support column 4. A mounting bracket can be installed on the worktable 1. The rotating shaft 6 can be mounted to the mounting bracket via bearings. The support columns 4 and the mounting bracket are integrated. The turntable 5 is mounted to the mounting bracket via a surface bearing. The outer diameter of the rotating shaft 6 is matched to the inner diameter of the gear being measured.

[0030] The upper surface of the rotating disc 5 is provided with a standard gear 8, that is, a gear with small size error and high precision, the size error of which can be ignored, and the size of which is consistent with the design size of the measured gear. The standard gear 8 is used as a reference to compare the profile offset of the measured gear with the standard gear, so that the size error of the measured gear can be quickly and directly obtained. The outer diameter of the rotating disc 5 is smaller than the dedendum diameter of the measured gear, so as to avoid shielding the teeth and tooth grooves of the standard gear 8. The rotating shaft 6 is coaxial with the standard gear 8, so as to ensure the accuracy of detection. The rotating shaft 6 penetrates the rotating disc 5 and the standard gear 8, and the upper end of the rotating shaft 6 is provided with a centering inner hole clamping mechanism for simultaneously positioning the standard gear 8 and the measured gear. The centering inner hole clamping mechanism simultaneously clamps and centers the standard gear 8 and the measured gear, so as to ensure that the standard gear 8 and the measured gear are in a coaxial state, thereby ensuring the accuracy of detection. The lower end of the rotating shaft 6 is connected with a first rotating driving mechanism 7, which is used to drive the rotating shaft 6 to rotate. After the centering inner hole clamping mechanism clamps the standard gear 8 and the measured gear, the rotating shaft 6 can drive the standard gear 8 and the measured gear to rotate, so as to facilitate the scanning of the outer side walls of the standard gear 8 and the measured gear. The first rotating driving mechanism 7 can be a speed reducer motor.

[0031] One end of the workbench 1 is provided with an inlet conveying mechanism 2, and the other end is provided with an outlet conveying mechanism 3. The workbench 1 is provided with a gear feeding and discharging mechanism. The inlet conveying mechanism 2 is used to convey the machined gear to the vicinity of the workbench 1. The gear feeding and discharging mechanism is used to move the gear on the inlet conveying mechanism 2 to the rotating shaft 6, or move the gear on the rotating shaft 6 to the outlet conveying mechanism 3. The outlet conveying mechanism 3 is used to convey the detected gear to the next station. The inlet conveying mechanism 2 and the outlet conveying mechanism 3 can adopt a conveying belt.

[0032] The gear feeding and discharging mechanism can be various existing mechanical hands. As a preferred embodiment, the gear feeding and discharging mechanism specifically includes a vertical rotating arm 14, the lower end of which is rotatably installed on the workbench 1. The rotating arm 14 is connected with a second rotating driving mechanism 15, which can be a speed reducer motor installed on the workbench 1. The rotating arm 14 is provided with a lifting arm 16 which is in sliding fit with the inner wall of the rotating arm 14. An axially extending transmission protrusion can be arranged on the outer wall of the lifting arm 16. The inner wall of the rotating arm 14 is provided with an axially extending transmission groove. The transmission protrusion is located in the transmission groove and is in sliding fit with the transmission groove, so that the rotating arm 14 can drive the lifting arm 16 to rotate synchronously when the rotating arm 14 rotates, and the lifting arm 16 can also move up and down. The lifting arm 16 is connected with a lifting driving mechanism 17, which can be a linear motor and is installed in the rotating arm 14. The upper end of the lifting arm 16 extends out of the rotating arm 14 and is fixedly provided with a horizontal cantilever pipe 18. The cantilever pipe 18 is provided with a gear grabbing mechanism.

[0033] When the lifting arm 16 is lifted, the cantilever pipe 18 is lifted synchronously, when the rotating arm 14 rotates, the lifting arm 16 rotates, and at this time, the lifting arm 16 can drive the cantilever pipe 18 to rotate, and the cantilever pipe 18 has a proper length, so that when the cantilever pipe 18 rotates, the gear grabbing mechanism can move to the above of the feeding conveying mechanism 2, the rotating shaft 6 and the discharging conveying mechanism 3 in turn, so that the gear grabbing mechanism can grab the measured gear and drive the measured gear to move.

[0034] Specifically, the gear grabbing mechanism comprises an adjusting motor 43 arranged at the bottom of the cantilever pipe 18, the main shaft of the adjusting motor 43 is connected with a horizontal positioning disc 19, the lower surface of the positioning disc 19 is provided with a plurality of suction cups 21, the suction cups 21 are connected with a first air supply and exhaust mechanism 22, and the first air supply and exhaust mechanism 22 can be a gas pump or the like.

[0035] The operation process of the gear feeding and discharging mechanism is as follows: the second rotating driving mechanism 15 drives the rotating arm 14 to rotate, so that the positioning disc 19 moves to the above of the feeding conveying mechanism 2, at this time, the measured gear on the feeding conveying mechanism 2 is located below the positioning disc 19, the lifting driving mechanism 17 drives the lifting arm 16 and the cantilever pipe 18 to move downward, so that the suction cups 21 contact the upper end surface of the measured gear, the first air supply and exhaust mechanism 22 is used to exhaust the gas in the suction cups 21, negative pressure is generated in the suction cups 21, so that the measured gear is sucked. Then the lifting driving mechanism 17 drives the lifting arm 16 and the cantilever pipe 18 to move upward, and drives the measured gear to move away from the feeding conveying mechanism 2, the second rotating driving mechanism 15 is used to drive the rotating arm 14 to rotate again, and then the measured gear is moved to the above of the rotating shaft 6, and then the lifting driving mechanism 17 drives the lifting arm 16 and the cantilever pipe 18 to move downward, so that the measured gear is placed on the upper surface of the standard gear 8, and the rotating shaft 6 is located in the inner hole of the measured gear. The first air supply and exhaust mechanism 22 supplies air to the suction cups 21, so that the measured gear can be released. The rotating arm 14 is rotated to drive the cantilever pipe 18 to move to the waiting position. In order to ensure that the measured gear can be smoothly sleeved on the rotating shaft 6, the upper end of the rotating shaft 6 can be provided with a circular truncated cone.

[0036] After the measured gear is moved to the rotating shaft 6, the gear grooves of the measured gear are likely not aligned with the gear grooves of the standard gear 8, therefore, the present application is provided with an adjusting motor 43 at the bottom of the cantilever pipe 18, the adjusting motor 43 is a stepping motor, the adjusting motor 43 is vertically arranged and the main shaft is downward, the adjusting motor 43 can drive the positioning disc 19 to rotate by a certain angle, thus the measured gear fixed to the suction disc 21 can be rotated by a certain angle, so that the gear grooves of the measured gear are preliminarily aligned with the gear grooves of the standard gear 8. At the same time, the upper portion of the workbench 1 is provided with a standard correction block 9, the shape and size of the standard correction block 9 are consistent with the shape and size of the gear grooves of the standard gear 8, and the standard correction block 9 can extend into the gear grooves of the standard gear 8 and fully fit the groove wall. The standard correction block 9 is connected with a first translation driving mechanism 10 for driving the standard correction block 9 to move along the radial direction of the standard gear 8. After the gear grooves of the measured gear are preliminarily aligned with the gear grooves of the standard gear 8, the suction disc 21 releases the measured gear, the first translation driving mechanism 10 drives the standard correction block 9 to move towards the standard gear 8 until the standard correction block 9 is simultaneously clamped into the gear grooves of the standard gear 8 and the measured gear, the angle of the measured gear is corrected, and it is ensured that the teeth and gear grooves of the edge of the measured gear are respectively aligned with the teeth and gear grooves of the standard gear 8. After correction, the standard correction block 9 is reset. The first translation driving mechanism 10 can be a cylinder, a linear motor or the like.

[0037] The upper portion of the standard gear 8 is provided with an upper laser scanner 12, the lower portion of the standard gear 8 is provided with a lower laser scanner 13, and one side of the standard gear 8 is provided with a side laser scanner 33. The side laser scanner 33, the upper laser scanner 12 and the lower laser scanner 13 are all connected with a controller 20. The upper laser scanner 12 is used for scanning the upper end face of the measured gear to obtain the profile of the upper end face of the measured gear, the lower laser scanner 13 is used for scanning the lower end face of the standard gear 8 to obtain the profile of the lower end face of the standard gear 8, and the side laser scanner 33 is used for scanning the side faces of the standard gear 8 and the measured gear to obtain the profiles of the gear grooves and the teeth. When the upper laser scanner 12 scans, the standard gear 8 and the measured gear remain stationary, and when the side laser scanner 33 and the lower laser scanner 13 scan, the rotating shaft 6 drives the standard gear 8 and the measured gear to rotate at a constant speed. The controller 20 can adopt a PLC, a computer or the like control device to calculate the deviation distance of the profiles of the standard gear 8 and the measured gear, and the deviation distance is the size error of the measured gear. The controller 20 is configured with a display screen, which can display the scanned profile image and the error value.

[0038] When the size error of the measured gear is very small, the teeth of the measured gear just cover the teeth of the standard gear 8, the tooth grooves of the measured gear just cover the tooth grooves of the standard gear 8, the scanning direction of the upper laser scanner 12 is vertically downward, and when the upper laser scanner 12 scans the upper surface of the measured gear, only the profile of the measured gear can be scanned, and the profile of the standard gear 8 cannot be scanned. Similarly, when the lower laser scanner 13 scans, only the profile of the standard gear 8 can be scanned. When the size error of the measured gear is obvious, the teeth and tooth grooves of the measured gear cannot be completely aligned with the teeth and tooth grooves of the standard gear 8. When the upper laser scanner 12 scans, the profile of the upper surface of the standard gear 8 can be scanned, and when the lower laser scanner 13 scans, the profile of the lower surface of the measured gear can be scanned. The position of the measured gear with a large size error can be directly observed from the scanning structure, and the size error value can be calculated. The center hole diameter of the measured gear can also be obtained from the scanning result of the upper laser scanner 12. The side laser scanner 33 scans each tooth and tooth groove of the standard gear 8 and the measured gear in turn, and the side profile of each tooth and tooth groove can be obtained. The profile of the standard gear 8 in the side profile is moved upward by the thickness of the standard gear 8. If the profile of the standard gear 8 coincides with the profile of the measured gear after the movement, it indicates that the size error of the tooth and tooth groove is small. If the profile of the standard gear 8 deviates from the profile of the measured gear after the movement, the deviation distance is calculated, which is the size error.

[0039] The present application can automatically and continuously detect a plurality of gears in batches, and the position with a large error and the specific error value can be directly obtained, so that the gears with unqualified size can be trimmed.

[0040] After the gear grabbing mechanism lowers the measured gear onto the standard gear 8, the upper laser scanner 12 can be used to preliminarily scan the measured gear, the controller 20 is used to judge the deviation degree of the tooth groove of the measured gear and the tooth groove of the standard gear 8, and then the controller 20 is used to control the adjusting motor 43 to rotate by a proper angle, so that the tooth groove of the measured gear is preliminarily aligned with the tooth groove of the standard gear 8.

[0041] In order to facilitate the installation of the standard gear 8, the lower surface of the standard gear 8 is provided with a clamping block, and the upper surface of the turntable 5 is provided with a clamping groove. When the standard gear 8 is installed, the clamping block is clamped into the clamping groove, and the standard gear 8 is naturally placed on the upper surface of the turntable 5, which is convenient to operate.

[0042] In the application, the centering inner hole clamping mechanism can adopt a conventional clamping mechanism similar to a three-jaw chuck, but these existing clamping mechanisms need power equipment and transmission structures, which rotate with the rotating shaft 6, increasing the assembly difficulty. In the application, the rotating shaft 6 adopts a hollow shaft, the centering inner hole clamping mechanism includes a piston 23 and a push rod 24, the piston 23 is located in the rotating shaft 6 and is in sliding fit with the rotating shaft 6, the lower end of the rotating shaft 6 is connected with the second air supply and exhaust mechanism 11 through a rotary joint 25, one end of the push rod 24 is fixedly connected with the piston 23, and the other end is provided with a circular truncated cone-shaped ejector rod 29; the outer wall of the upper end of the rotating shaft 6 is provided with three positioning grooves which are uniformly distributed around the center of the rotating shaft 6, one elastic block 26 in sliding fit with the positioning groove is arranged in each positioning groove, and the three elastic blocks 26 move synchronously along the radial direction, so that the centering clamping is realized. An arc-shaped limiting block 27 is arranged on one side of the elastic block 26 in the rotating shaft 6, a first elastic element 28 is arranged between the outer wall of the limiting block 27 and the inner wall of the rotating shaft 6, the three limiting blocks 27 enclose a circular truncated cone-shaped cavity, and the outer wall of the ejector rod 29 can be attached to the inner wall of the limiting block 27.

[0043] The first elastic element 28 can adopt a spring, which is always in a compressed state and has a certain elastic force. When not clamping, under the action of the elastic force of the first elastic element 28, the three limiting blocks 27 enclose a circular truncated cone-shaped cavity, the inner diameter of the upper end of the cavity is smaller than that of the lower end, and at this time the ejector rod 29 is located below the limiting block 27. When it is necessary to clamp the gear inner hole, the second air supply and exhaust mechanism 11 introduces gas into the inside of the rotating shaft 6 through the rotary joint 25, the gas pushes the piston 23 and the push rod 24 to move upwards, so that the ejector rod 29 enters the cavity enclosed by the limiting block 27, when the outer wall of the ejector rod 29 contacts the inner wall of the limiting block 27, the ejector rod 29 pushes the three limiting blocks 27 to move synchronously outward along the radial direction, the limiting blocks 27 push the elastic blocks 26 to move outward, the first elastic element 28 is further compressed, and the outer side walls of the three elastic blocks 26 press the inner wall of the gear, so that the gear is clamped and centered. After detection, the second air supply and exhaust mechanism 11 exhausts the gas, so that the piston 23 drives the push rod 24 to move downwards, the ejector rod 29 gradually leaves the cavity enclosed by the limiting block 27, under the action of the elastic force of the first elastic element 28, the limiting block 27 moves towards the inside of the rotating shaft 6, drives the elastic block 26 to reset, and thus the gear is released.

[0044] In the application, the second air supply and exhaust mechanism 11 is adopted as the clamping power mechanism, the piston 23 is moved by using gas, and the clamping power mechanism and the transmission mechanism such as the piston 23 and the limiting block 27 are not directly connected, so the structural complexity is simplified. The rotary joint 25 can remain fixed, and the rotating shaft 6 is in rotating fit with the rotary joint 25. The second air supply and exhaust mechanism 11 can adopt an air pump.

[0045] In order to facilitate detection of the size accuracy of the inner hole of the measured gear, the tensioning block 26 comprises two tensioning portions 261 and a transmission portion 262, one of the tensioning portions 261 is located above the other tensioning portion 261, the outer side wall of the tensioning portion 261 is an arc-shaped wall capable of fitting the inner hole of the standard gear 8, the transmission portion 262 is fixedly connected with the limiting block 27, the inner side wall of each tensioning portion 261 is provided with a guide column 263, the side of the transmission portion 262 facing the tensioning portion 261 is provided with a guide hole, the guide column 263 extends into the guide hole and is in sliding fit with the guide hole, the side wall of the transmission portion 262 facing the tensioning portion 261 is provided with a pressure sensor 265, the pressure sensor 265 is fixedly connected with the tensioning portion 261 through a second elastic member 264, and the second elastic member 264 can be a spring.

[0046] The two tensioning portions 261 are respectively used for clamping the inner holes of the standard gear 8 and the measured gear, and specifically, when the gear is clamped and positioned, the limiting block 27 pushes the two tensioning portions 261 to move outward synchronously, and the two tensioning portions 261 respectively tighten the inner hole walls of the standard gear 8 and the measured gear, in the process of tightening, the tensioning force is transmitted to the second elastic member 264, so that the second elastic member 264 is gradually compressed to generate an elastic force, and the elastic force is transmitted to the pressure sensor 265 and can be detected by the pressure sensor 265. When the inner hole size error of the measured gear is small, the inner hole size of the measured gear is the same as that of the standard gear 8, the compression amount of the second elastic member 264 is the same, and the tensioning force should also be the same. If the radial size error of the inner hole of the measured gear is large, the compression amounts of the second elastic members 264 corresponding to the standard gear 8 and the measured gear are different, so the pressure values detected by the pressure sensor 265 are different, and the radius error of the measured gear can be calculated according to the difference of the pressure values.

[0047] In the application, the upper laser scanner 12 is installed on the sliding seat 30, the sliding seat 30 is installed on the horizontal guide rail 31, and the sliding seat 30 is connected with the second translation driving mechanism 32 for driving the sliding seat 30 to move, the second translation driving mechanism 32 can be a gas cylinder or the like, the second translation driving mechanism 32 drives the sliding seat 30 to move reciprocally, and then drives the upper laser scanner 12 to move reciprocally, so as to ensure that the upper laser scanner 12 can accurately scan the upper surface of the entire measured gear. The lower laser scanner 13 is fixedly installed below the edge of the standard gear 8, when the standard gear 8 and the measured gear rotate synchronously with the rotating shaft 6, each tooth and tooth groove of the standard gear 8 and the measured gear moves to the front of the lower laser scanner 13 in sequence, so that the lower laser scanner 13 can scan each tooth and tooth groove in sequence.

[0048] The sliding seat 30 is provided with a marking mechanism, when the gear size error does not meet the requirements, the marking mechanism can be used to mark the unqualified gear, so as to be distinguished from the qualified gear.

[0049] The marking mechanism specifically comprises a lifting mechanism 34, which can be a linear motor. A lifting frame 35 is connected to the lower end of the lifting mechanism 34. A plurality of vertical marking barrels 36 are arranged on the lifting frame 35. The marking barrels 36 are cylinders. A marking template 37 is arranged at the lower end of each marking barrel 36. The marking template 37 is provided with an opening. The shapes of the openings on different marking templates 37 are different. Specifically, the shapes of the openings can be numbers 1, 2, 3, etc., or letters A, B, C, etc. Different opening shapes represent different size errors. For example, when the size of the end faces of a tooth and a gear slot is unqualified, the marking can be “1”. When the size of the side faces of a tooth and a gear slot is unqualified, the marking can be “2”. A spray head 38 is arranged in each marking barrel 36. Each spray head 38 is connected with a flexible delivery pipe 40 through a valve 39. The delivery pipe 40 is connected with a pigment storage box 42 through a pump 41. The pigment storage box 42 is used for storing pigment. Specifically, white pigment can be used. During marking, the lifting mechanism 34 drives the lifting frame 35 to move downward, so that the lower end of the marking barrel 36 approaches the measured gear. Then, the pump 41 and the corresponding valve 39 are opened. The pump 41 delivers the pigment in the pigment storage box 42 to the spray head 38. The spray head 38 sprays the pigment downward. Part of the pigment is blocked by the marking template 37, and the other part of the pigment is sprayed onto the gear through the opening of the marking template 37, thereby forming a mark. After marking is completed, the pump 41 and the corresponding valve 39 are closed, and the lifting mechanism 34 drives the lifting frame 35 to reset upward.

[0050] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A gear surface size laser detection device, comprising a workbench (1), characterized in that: a vertical rotating shaft (6) and a plurality of vertical support columns (4) are arranged on the workbench (1), the top of the support column (4) is provided with a horizontal rotating disc (5), the upper surface of the rotating disc (5) is provided with a standard gear (8); the rotating shaft (6) is coaxial with the standard gear (8), and the rotating shaft (6) penetrates the rotating disc (5) and the standard gear (8), the upper end of the rotating shaft (6) is provided with a centering inner hole clamping mechanism for simultaneously positioning the standard gear (8) and the gear to be measured, and the lower end of the rotating shaft (6) is connected with a first rotating drive mechanism (7); One end of the workbench (1) is provided with an inlet conveying mechanism (2), and the other end is provided with an outlet conveying mechanism (3), and a gear feeding and discharging mechanism is arranged on the workbench (1); A standard correction block (9) is arranged above the workbench (1), and the standard correction block (9) is connected with a first translation drive mechanism (10) for driving the standard correction block (9) to move radially along the standard gear (8); An upper laser scanner (12) is arranged above the standard gear (8), a lower laser scanner (13) is arranged below the standard gear (8), and a side laser scanner (33) is arranged on one side of the standard gear (8), the side laser scanner (33), the upper laser scanner (12) and the lower laser scanner (13) are all connected with a controller (20); The rotating shaft (6) is a hollow shaft, the centering inner hole clamping mechanism comprises a piston (23) and a push rod (24), the piston (23) is located in the rotating shaft (6) and is in sliding fit with the rotating shaft (6), the lower end of the rotating shaft (6) is connected with a second air supply and exhaust mechanism (11) through a rotary joint (25), one end of the push rod (24) is fixedly connected with the piston (23), and the other end is provided with a circular truncated cone-shaped jack (29); the upper end of the rotating shaft (6) is provided with three positioning grooves which are uniformly distributed around the center of the rotating shaft (6), one elastic block (26) is arranged in each positioning groove and in sliding fit with the positioning groove, the side of the elastic block (26) located in the rotating shaft (6) is provided with an arc-shaped limiting block (27), a first elastic element (28) is arranged between the outer wall of the limiting block (27) and the inner wall of the rotating shaft (6), three limiting blocks (27) form a circular truncated cone-shaped cavity, and the outer wall of the jack (29) can fit the inner wall of the limiting block (27). ​ The tensioning block (26) comprises two tensioning parts (261) and a transmission part (262), the two tensioning parts (261) are respectively used for clamping the inner hole of the standard gear (8) and the measured gear, the outer side wall of the tensioning part (261) is an arc-shaped wall capable of fitting the inner hole of the standard gear (8), the inner side wall of each tensioning part (261) is provided with a guide column (263), the transmission part (262) is provided with a guide hole towards the side of the tensioning part (261), the guide column (263) extends into the guide hole and is in sliding fit with the guide hole, the transmission part (262) is provided with a pressure sensor (265) towards the side wall of the tensioning part (261), and the pressure sensor (265) is fixedly connected with the tensioning part (261) through a second elastic member (264).

2. The gear surface size laser detection apparatus of claim 1, wherein: The gear feeding and discharging mechanism comprises a vertical rotating arm (14), and the rotating arm (14) is connected with a second rotating driving mechanism (15); a lifting arm (16) is arranged in the rotating arm (14), and the lifting arm (16) is connected with a lifting driving mechanism (17); the upper end of the lifting arm (16) extends out of the rotating arm (14) and is fixedly provided with a horizontal cantilever pipe (18), and the cantilever pipe (18) is provided with a gear grabbing mechanism.

3. The gear surface size laser detection apparatus of claim 2, wherein: The gear grabbing mechanism comprises an adjusting motor (43) arranged at the bottom of the cantilever pipe (18), and the main shaft of the adjusting motor (43) is connected with a horizontal positioning disc (19), the lower surface of the positioning disc (19) is provided with a plurality of suction cups (21), and the suction cups (21) are connected with a first air supply and exhaust mechanism (22).

4. The gear surface size laser detection apparatus of claim 1, wherein: The lower surface of the standard gear (8) is provided with a clamping block, and the upper surface of the rotating disc (5) is provided with a clamping groove, and the clamping block is clamped into the clamping groove.

5. The gear surface size laser detection apparatus of claim 1, wherein: The upper laser scanner (12) is mounted on a sliding seat (30), the sliding seat (30) is mounted on a horizontal guide rail (31), and the sliding seat (30) is connected with a second translation driving mechanism (32) for driving the sliding seat (30) to move; and the lower laser scanner (13) is fixedly mounted below the edge of the standard gear (8).

6. The gear surface size laser detection apparatus of claim 5, wherein: The sliding seat (30) is provided with a marking mechanism.

7. The gear surface size laser detection apparatus of claim 6, wherein: The marking mechanism comprises a lifting mechanism (34), the lower end of the lifting mechanism (34) is connected with a lifting frame (35), the lifting frame (35) is provided with a plurality of vertical marking barrels (36), the lower end of the marking barrel (36) is provided with a marking template (37), the marking template (37) is provided with a hollow, each marking barrel (36) is provided with a spray head (38), each spray head (38) is connected with a flexible conveying pipe (40) through a valve (39), and the conveying pipe (40) is connected with a pigment storage box (42) through a pump (41).

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