A gear measuring device based on laser sensors

Abstract

This invention relates to the field of laser measuring instrument technology, specifically disclosing a gear measuring device based on a laser sensor. The device includes a conveyor frame, a laser measuring instrument, and a gear disk. The laser measuring instrument and the gear disk are both mounted on top of the conveyor frame. Several multi-angle measuring components and fixing components are arranged on the top of the conveyor frame. Each multi-angle measuring component includes a placement box slidably connected to the top of the conveyor frame, with a limiting worm gear rotatably connected inside the placement box. This invention achieves purely mechanical linkage between workpiece rotation, lifting, and conveying translation. During the translation of the placement box along the conveyor frame, the limiting worm gear rotates through the meshing transmission of the gear rod and rack, synchronously driving the gear disk to rotate circumferentially at a uniform speed. Simultaneously, relying on the linkage mechanism between the worm gear and the eccentric disk, the gear disk performs axial reciprocating lifting motion. The entire rotation and lifting power is fully reused from the conveying translational force of the placement box.

Description

Technical Field

[0001] This invention relates to the field of laser measuring instruments, and more specifically to a gear measuring device based on a laser sensor. Background Technology

[0002] Gears are core components in mechanical transmission systems. Their tooth profile, pitch, radial runout, and other dimensional parameters directly affect transmission accuracy and service life. Therefore, gears must undergo high-precision dimensional inspection before leaving the factory. Laser non-contact measurement, with its advantages of fast inspection speed, no scratches, and high accuracy, has become the mainstream technical solution for gear dimensional inspection.

[0003] Existing gear laser measurement equipment mostly operates in a fixed single-station inspection mode, requiring manual clamping of each gear onto the positioning fixture. After single-station inspection, manual unloading and replacement are necessary, resulting in low overall inspection efficiency and difficulty in meeting the continuous inspection needs of large batches of gears. Furthermore, most clamping structures use external clamping, where the fixture sidewalls obscure parts of the tooth surface and root area, creating measurement blind spots. This necessitates multiple adjustments to the workpiece posture for supplementary measurements, making the inspection process cumbersome and resulting in insufficient data integrity.

[0004] To achieve multi-angle detection, some detection equipment is equipped with an additional independent rotary motor and lifting drive mechanism to drive the workpiece to move in multiple dimensions to cover the detection area. However, the drive system of such equipment is complex, the manufacturing cost is high, the multi-axis collaborative control is difficult, the failure rate is high during long-term continuous operation, and the equipment maintenance cost is high, making it difficult to popularize in small and medium batch production scenarios.

[0005] Furthermore, existing conveyor-type gear inspection equipment mostly uses rigid stop structures, which are prone to collisions and impacts when the workpiece is conveyed to the workstation, causing the gear clamping position to shift and directly affecting measurement accuracy. Moreover, the clamping fixtures are mostly of fixed specifications, requiring replacement to fit gears with different inner diameters, resulting in time-consuming changeovers and poor equipment adaptability. Conventional clamping structures also require manual locking and unlocking operations, leading to a high proportion of time spent on loading and unloading auxiliary operations, which cannot match the operational rhythm of automated continuous inspection production lines.

[0006] Therefore, there is a need to provide a gear measuring device based on a laser sensor, which aims to solve the above problems. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a gear measuring device based on a laser sensor.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a gear measuring device based on a laser sensor, comprising a conveyor frame, a laser measuring device and a gear disk, wherein the laser measuring device is disposed on the top of the conveyor frame, the gear disk is disposed on the top of the conveyor frame, and the top of the conveyor frame is provided with a plurality of multi-angle measuring components and fixing components; The multi-angle measuring component includes a placement box, which is slidably connected to the top of the conveyor frame. A limiting worm gear is rotatably connected inside the placement box. A gear rod is fixedly connected to the bottom of the limiting worm gear, and a limiting hollow sleeve is slidably connected to the top of the limiting worm gear. The fixing component includes a placement frame, which is fixedly connected to the top of the limiting hollow sleeve. A metal slide rod is slidably connected to the top of the placement frame, and an electromagnet ring is sleeved on the outer wall of the metal slide rod. The electromagnet ring is fixedly connected to the top of the inner cavity of the placement frame.

[0009] Preferably, the multi-angle measuring component includes a worm gear, which is rotatably connected inside the placement box. The worm gear meshes with a limiting worm, and an eccentric disk is snapped onto the outer wall of the worm gear. A connecting rod is slidably connected to the outer wall of the eccentric disk.

[0010] Preferably, the multi-angle measuring component includes a lifting push rod, which is rotatably connected to the top of the inner cavity of the placement box. The end of the lifting push rod away from the placement box is rotatably connected to a bearing plate, and the end of the connecting rod away from the eccentric plate is rotatably connected to the middle of the lifting push rod.

[0011] Preferably, the fixing component includes a connecting plate, which is fixedly connected to the top of the metal slide rod, and a second return spring is fixedly connected to the bottom of the inner cavity of the placement frame, with the end of the second return spring away from the placement frame fixedly connected to the bottom of the metal slide rod.

[0012] Preferably, the fixing component includes several sets of connecting rods, which are arranged in a ring and rotatably connected to the placement frame and the connecting plate. The ends of the several sets of connecting rods away from the placement frame and the connecting plate are all rotatably connected to a fixing block.

[0013] Preferably, the top of the placement rack is provided with a number of metal sensors arranged in a ring.

[0014] Preferably, a parking assembly is provided on the top of the conveyor frame. The parking assembly includes a toothed rack, which is fixedly connected to the top of the conveyor frame. A positioning block assembly is fixedly connected to the outer wall of the toothed rack, and a sliding rod assembly is slidably connected inside the positioning block assembly.

[0015] Preferably, the parking assembly includes a toothed block, which is fixedly connected to the end of the slide rod assembly away from the positioning block assembly. A first return spring is symmetrically sleeved on the outer wall of the slide rod assembly. One end of the first return spring is fixedly connected to the toothed block, and the other end of the first return spring away from the toothed block is fixedly connected to the positioning block assembly.

[0016] Preferably, the gear rod and the rack are at the same horizontal height, and the gear rod and the rack mesh with each other.

[0017] Preferably, the inner side of the bearing disc is fixedly connected to the bottom of the limiting hollow sleeve.

[0018] The gear measuring device based on a laser sensor provided by this invention has the following advantages compared with the prior art: This invention integrates the workpiece rotation, lifting, and conveying translation movements into a purely mechanical linkage. During the translation of the placement box along the conveyor frame, the meshing transmission between the gear rod and the rack drives the limiting worm gear to rotate, simultaneously causing the gear disc to rotate at a uniform circumferential speed. Simultaneously, relying on the linkage mechanism between the worm wheel and the eccentric disc, the gear disc performs axial reciprocating lifting motion. The entire rotation and lifting power fully reuses the conveying translation force of the placement box, eliminating the need for an additional independent drive motor, simplifying the overall equipment structure, and reducing manufacturing costs and operational failure rates.

[0019] Through the combined motion of circumferential rotation and axial reciprocating lifting of the gear disk, the detection beam of the laser measuring device can completely cover different height areas of the tooth surface, the tooth root and tooth tip positions, and the upper and lower end faces of the gear, realizing multi-angle and full-dimensional dimension detection, effectively reducing the blind zone of single-angle measurement, and improving the comprehensiveness and accuracy of the detection data.

[0020] By setting up an elastic parking buffer structure, when the placement box slides to the end of the toothed rack, the gear rod pushes the toothed block to compress the first return spring. The spring deformation absorbs the translational inertia of the placement box, achieving flexible deceleration and stopping, avoiding rigid impact stopping that could cause the gear disk to shift, ensuring clamping and positioning accuracy, and improving the stability of measurement data. When multiple placement boxes are lined up in sequence, this elastic structure can also buffer the collision impact of adjacent workstations, ensuring stable workstation arrangement and preventing clamping from loosening.

[0021] By relying on the elastic driving force of the second return spring to drive multiple sets of fixing blocks to expand synchronously and evenly press against the inner ring wall of the gear disk to complete self-centering clamping. This structure can adaptively adjust the expansion range according to the inner diameter of the gear, adapting to the clamping of gear disks with various inner diameter specifications, without the need to change the clamps, and the equipment has high adaptability and flexibility; at the same time, the clamping components are located in the inner hole area of ​​the gear, and the outer teeth and end face of the gear are completely exposed without clamp obstruction, avoiding the formation of measurement blind spots, and adapting to the requirements of laser full contour detection.

[0022] By relying on the combination of metal sensors and electromagnet rings, the entire process of automatic clamping is achieved, from automatic clamping at the workpiece position to automatic unclamping at the unloading station. There is no need for manual operation of the locking and unlocking structure, which effectively shortens the auxiliary time for loading and unloading, improves the efficiency of inspection operations, and is suitable for the production needs of continuous automated inspection of batch gears in the workshop.

[0023] The transmission structure composed of the limiting worm and worm wheel has a reverse self-locking characteristic, which can keep the rotation angle and lifting position of the gear disk stable and prevent movement due to measurement vibration or external force. This ensures that the workpiece posture remains constant during laser measurement and improves the repeatability and reliability of the detection data. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the overall positional relationship of the device in this invention; Figure 2 This is a cross-sectional view of the overall device in this invention; Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B in the middle; Figure 5 This is a schematic diagram showing the positional relationship between the limiting worm gear, the gear rod, and the limiting hollow sleeve in this invention; Figure 6 This is a schematic diagram showing the positional relationship between the limiting worm, worm wheel, and eccentric disc in this invention; Figure 7 This is a schematic diagram showing the positional relationship between the limiting worm gear and the limiting hollow sleeve in this invention; Figure 8 This is a schematic diagram showing the positional relationship between the limiting hollow sleeve, the placement frame, and the metal slide bar in this invention; Figure 9 This is a schematic diagram showing the positional relationship between the metal slide bar, the second return spring, and the electromagnet ring in this invention.

[0025] Figure label: 11. Conveyor frame; 12. Laser measuring instrument; 13. Gear disk; The multi-angle measuring assembly includes: 21. Placement box; 22. Limiting worm gear; 23. Gear rod; 24. Limiting hollow sleeve; 25. Worm wheel; 26. Eccentric disc; 27. Lifting push rod; 28. Bearing disc; 29. ​​Connecting rod; The parking assembly includes: 31, a toothed rack; 32, a positioning block assembly; 33, a slide bar assembly; 34, a toothed block; and 35, a first return spring. The fixing components include: 41, a placement frame; 42, a metal slide bar; 43, a connecting plate; 44, a second return spring; 45, an electromagnet ring; 46, a connecting rod assembly; 47, a fixing block; and 48, a metal sensor. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0027] In the description of this invention, the terms “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] Implementation, for example Figures 1 to 3 As shown, an embodiment of the present invention provides a gear measuring device based on a laser sensor, including a conveyor frame 11, a laser measuring device 12 and a gear disk 13. The laser measuring device 12 is disposed on the top of the conveyor frame 11, the gear disk 13 is disposed on the top of the conveyor frame 11, a plurality of multi-angle measuring components and fixing components are disposed on the top of the conveyor frame 11, and a parking component is disposed on the top of the conveyor frame 11.

[0030] The multi-angle measuring assembly includes a placement box 21, which is slidably connected to the top of the conveyor frame 11 and can slide horizontally back and forth along the top surface of the conveyor frame 11. A limiting worm gear 22 is rotatably connected inside the placement box 21. A gear rod 23 is fixedly connected to the bottom of the limiting worm gear 22, and a limiting hollow sleeve 24 is slidably connected to the top of the limiting worm gear 22. An axial keyway is provided on the outer wall of the limiting worm gear 22, and a corresponding protruding key is provided on the inner wall of the limiting hollow sleeve 24. The two work together through the keyway to achieve synchronous circumferential rotation, and can also slide relative to each other axially, realizing rotation and lifting.

[0031] The multi-angle measuring component includes a worm gear 25, which is rotatably connected inside the placement box 21 and meshes with a limiting worm 22. The transmission pair formed by the worm gear 25 and the limiting worm 22 has a reverse self-locking characteristic, which can limit the reverse movement of the transmission chain and ensure the stability of the workpiece inspection posture. An eccentric disk 26 is snapped onto the outer wall of the worm gear 25, and a connecting rod 29 is slidably connected to the outer wall of the eccentric disk 26. The multi-angle measuring component also includes a lifting push rod 27, which is rotatably connected to the top of the inner cavity of the placement box 21. A bearing disk 28 is rotatably connected to the end of the lifting push rod 27 away from the placement box 21, and a connecting rod 29 is rotatably connected to the middle of the lifting push rod 27 at the end away from the eccentric disk 26. The inner side of the bearing disk 28 is fixedly connected to the bottom of the limiting hollow sleeve 24, and the inner ring of the bearing disk 28 and the limiting hollow sleeve 24 are in a rotatable fit, which can transmit vertical lifting loads without interfering with the circumferential rotation of the limiting hollow sleeve 24.

[0032] like Figures 5 to 9 As shown, the fixing assembly includes a placement frame 41, which is fixedly connected to the top of the limiting hollow sleeve 24. A metal slide rod 42 is slidably connected to the top of the placement frame 41, and an electromagnet ring 45 is sleeved on the outer wall of the metal slide rod 42. The electromagnet ring 45 is fixedly connected to the top of the inner cavity of the placement frame 41. The fixing assembly also includes a connecting plate 43, which is fixedly connected to the top of the metal slide rod 42. A second return spring 44 is fixedly connected to the bottom of the inner cavity of the placement frame 41, and the end of the second return spring 44 away from the placement frame 41 is fixedly connected to the bottom of the metal slide rod 42.

[0033] The fixing assembly includes several sets of connecting rods 46, which are arranged in a ring and rotatably connected to the placement frame 41 and the connecting plate 43. Each set of connecting rods 46, at its end furthest from the placement frame 41 and the connecting plate 43, is rotatably connected to a fixing block 47. The connecting rods 46 have a double-hinged linkage structure; when the connecting plate 43 rises or falls, it can cause the connecting rods 46 to expand or contract at their included angle, synchronously driving multiple fixing blocks 47 to extend and contract radially, achieving self-centering tension of the gear's inner bore. Several metal sensors 48 are arranged in a ring on the top of the placement frame 41. The metal sensors 48, the electromagnet ring 45, and the drive unit of the conveyor frame 11 are all connected to the unified main control and power supply circuit of the equipment. The metal sensors 48 serve as the workpiece arrival detection input, responsible for triggering the clamping action.

[0034] like Figure 4As shown, the parking assembly includes a toothed rack 31, which is fixedly connected to the top of the conveyor frame 11. A gear rod 23 is at the same horizontal height as the toothed rack 31 and meshes with it. When the placement box 21 moves horizontally, the gear rod 23 can be driven to rotate through the toothed rack. A positioning block assembly 32 is fixedly connected to the outer wall of the toothed rack 31, and a sliding rod assembly 33 is slidably connected inside the positioning block assembly 32. The parking assembly includes a toothed block 34, which is fixedly connected to the end of the sliding rod assembly 33 away from the positioning block assembly 32. A first return spring 35 is symmetrically sleeved on the outer wall of the sliding rod assembly 33. One end of the first return spring 35 is fixedly connected to the toothed block 34, and the other end of the first return spring 35 away from the toothed block 34 is fixedly connected to the positioning block assembly 32.

[0035] In actual use, during the feeding stage, the electromagnet ring 45 remains energized, attracting the metal slide rod 42 to maintain its raised posture. The second return spring 44 is in a stretched, energy-storing state. The connecting plate 43 rises with the metal slide rod 42, pulling the connecting rod assembly 46 to open the included angle, causing the fixing block 47 to retract inward. The tension diameter is smaller than the inner hole of the gear, facilitating gear insertion. After the gear disk 13 is aligned with the placement frame 41, the metal sensor 48 detects the metal workpiece. The main control circuit cuts off the power supply to the electromagnet ring 45, the second return spring 44 retracts, pulling the metal slide rod 42 downward. The connecting plate 43 presses down, causing the connecting rod assembly 46 to close the included angle, pushing the fixing block 47 to expand and tighten the inner ring wall of the gear, completing the adaptive self-centering clamping.

[0036] The placement box 21 slides along the conveyor frame 11 toward the detection area. The gear rod 23 meshes with the toothed rack 31 and rotates, driving the limiting worm 22, the limiting hollow sleeve 24, the placement frame 41 and the gear disk 13 to rotate synchronously. At the same time, the limiting worm 22 meshes with the worm wheel 25 and rotates, driving the lifting push rod 27 to swing back and forth through the eccentric disk 26 and the connecting rod 29. This drives the bearing disk 28, the limiting hollow sleeve 24 and the gear disk 13 to move axially back and forth. The gear disk 13 passes through the detection area of ​​the laser measuring device 12 with a combined rotation and lifting motion, realizing full tooth profile, multi-dimensional blind-spot-free measurement.

[0037] When the placement box 21 slides to the end of the toothed rack 31, the gear rod 23 pushes the toothed block 34 to compress the first return spring 35. The spring deformation absorbs the translational inertia, achieving flexible deceleration and stopping, and avoiding gear displacement caused by rigid impact. When multiple sets of placement boxes 21 are lined up in sequence, this elastic structure can buffer collisions between workstations and ensure stable arrangement.

[0038] After the inspection is completed, the placement box 21 is transported to the unloading station. The main control circuit restores the power supply to the electromagnet ring 45, and the magnetic attraction pulls up the metal slide bar 42 to reset. The fixing block 47 retracts inward to release the tension constraint, and the gear disk 13 can be removed. After the empty placement box 21 is returned, it enters the next round of waiting for materials cycle. The whole process runs automatically without the need for manual operation of the fixture, which is suitable for continuous batch gear inspection.

[0039] Based on the above embodiments, the following is the complete working process and working principle of the above embodiments: Gear disk 13 self-adaptive fixing steps: During the feeding operation, the electromagnet ring 45 is kept energized and relies on magnetic attraction to hold the metal slide bar 42 in a raised position. The second return spring 44 is in a stretched and stored energy state. The connecting plate 43 is raised synchronously with the metal slide bar 42, pulling the connecting rod group 46 to open the included angle, driving multiple sets of fixing blocks 47 to shrink inward synchronously. The overall tension diameter is smaller than the inner hole of the gear, which makes it easy for the gear to be quickly inserted and placed. Align the center of the gear disk 13 to be tested with the placement frame 41 and place it stably on the top surface of the placement frame 41. After the metal sensor 48, which is arranged in a ring on the top surface of the placement frame 41, detects the metal material of the gear disk 13, it outputs a trigger signal to the main control circuit of the equipment, cuts off the power supply to the electromagnet ring 45, and the magnetic attraction disappears. The stretched second return spring 44 elastically contracts and pulls the metal slide rod 42 downward to slide vertically along the center of the placement frame 41. The metal slide rod 42 drives the top connecting plate 43 to descend synchronously. The connecting plate 43 presses down the connecting rod group 46, causing the multiple connecting rod groups 46 to close their included angle, and simultaneously push the multiple fixing blocks 47 to expand radially outward, evenly pressing against the inner ring wall of the gear disk 13, completing the radial self-centering clamping of the gear disk 13.

[0040] Relying on the elastic extension and contraction characteristics of the second return spring 44, the fixing block 47 can adaptively adjust the expansion range according to the inner diameter of the gear, which can be adapted to the clamping of gear disks 13 with different inner diameter specifications without the need to change the clamp; at the same time, the clamping method of inner hole tensioning exposes the outer teeth and end face of the gear without clamp obstruction, which is suitable for the laser full contour measurement requirements.

[0041] Conveyor linkage rotation measurement steps: After the gear is clamped, the placement box 21 slides horizontally along the top of the conveyor frame 11 and moves towards the detection area of ​​the laser measuring device 12; the gear rod 23 at the bottom of the placement box 21 moves synchronously with the placement box 21, and the gear rod 23 meshes with the toothed rack 31 at the top of the conveyor frame 11. During the translation, the tooth reaction force of the toothed rack 31 drives the gear rod 23 to rotate around its own axis.

[0042] The gear rod 23 synchronously drives the top limiting worm gear 22 to rotate coaxially. The limiting worm gear 22 drives the limiting hollow sleeve 24 to rotate synchronously through a keyway. The top of the limiting hollow sleeve 24 drives the placement frame 41 and the gear disk 13 to rotate uniformly around the central axis. When the placement box 21 moves through the detection area of ​​the laser measuring device 12, the gear disk 13 is in a continuous rotating state. The laser measuring device 12 can continuously scan the external teeth of the gear, and completely collect parameters such as tooth profile, tooth pitch, and radial runout of the entire tooth profile. The entire rotation power is completely reused from the conveying translational force of the placement box 21, without the need for an additional rotary drive motor, simplifying the equipment structure.

[0043] Lifting measurement work steps: While the limiting worm gear 22 rotates, it meshes with the worm wheel 25 on the side, driving the worm wheel 25 to rotate synchronously. The worm wheel 25 drives the coaxially fixed eccentric disk 26 to rotate synchronously. The eccentric disk 26 pulls the lifting push rod 27 to swing back and forth through the connecting rod 29. The middle part of the lifting push rod 27 is driven by the eccentric disk 26 to swing in a plane through the connecting rod 29. The end of the lifting push rod 27 away from the placement box 21 transmits vertical power through the bearing disk 28.

[0044] During the swinging process of the lifting push rod 27, it drives the bearing disk 28 to perform vertical reciprocating lifting motion. Simultaneously, the bearing disk 28 drives the limiting hollow sleeve 24 to slide vertically along the limiting worm 22, thereby driving the placement frame 41 and the gear disk 13 to perform axial reciprocating lifting motion simultaneously. The inner ring of the bearing disk 28 and the limiting hollow sleeve 24 rotate and cooperate, which can transmit the vertical lifting load without interfering with the circumferential rotation of the limiting hollow sleeve 24, thus realizing the composite motion of the gear disk 13 rotation + lifting.

[0045] During the laser measuring instrument 12 inspection process, the gear rotates and moves up and down along the axis, allowing the laser beam to cover different height areas of the tooth surface, the upper and lower end faces of the gear, as well as the tooth root and tooth tip positions, to achieve multi-angle and full-dimensional size inspection, eliminate the blind spot of single-angle measurement, and improve the comprehensiveness and accuracy of the inspection data.

[0046] During the translation of the placement box 21 along the conveyor frame 11, the meshing transmission between the gear rod 23 and the toothed rack 31 drives the limiting worm gear 22 to rotate, synchronously driving the gear disk 13 to rotate at a uniform speed in the circumference; at the same time, relying on the linkage mechanism between the worm wheel 25 and the eccentric disk 26, the gear disk 13 is driven to perform axial reciprocating lifting motion. The entire rotation and lifting power fully reuses the conveying and translational power of the placement box 21, eliminating the need for an additional independent drive motor, simplifying the overall structure of the equipment, and reducing manufacturing costs and operational failure rate.

[0047] Through the combined motion of the circumferential rotation of the gear disk 13 and the axial reciprocating lifting motion, the detection beam of the laser measuring device 12 can completely cover different height areas of the tooth surface, the tooth root and tooth tip positions, and the upper and lower end faces of the gear, realizing multi-angle and full-dimensional dimension detection, effectively reducing the blind zone of single-angle measurement, and improving the comprehensiveness and accuracy of the detection data.

[0048] Parking buffer steps: Under normal conditions, the first return spring 35 pushes the toothed block 34 away from the positioning block group 32. When the placement box 21 slides to the end area of ​​the toothed rack 31, the gear rod 23 first contacts the tooth surface of the toothed block 34, pushing the toothed block 34 back towards the positioning block group 32. The slide rod group 33 slides along the inside of the positioning block group 32, simultaneously compressing the first return spring 35. During the compression process, the first return spring 35 absorbs the translational inertia of the placement box 21, achieving flexible deceleration and buffering, avoiding the rigid impact of the placement box 21 on the stop, which would cause the gear disk 13 to shift, ensuring the clamping and positioning accuracy, and avoiding deviations in measurement data.

[0049] When multiple sets of placement boxes 21 are conveyed and queued in sequence, the tail of the preceding placement box 21 abuts against the front of the following placement box 21. The elastic structure composed of the toothed block 34 and the first reset spring 35 can buffer the collision impact of adjacent workstations, ensuring that the multiple workstations are arranged stably in sequence, and preventing gear displacement or loosening of clamping due to rigid collisions.

[0050] By setting up an elastic parking buffer structure, when the placement box 21 slides to the end of the toothed rack 31, the gear rod 23 pushes the toothed block 34 to compress the first return spring 35. The spring deformation absorbs the translational inertia of the placement box 21, achieving flexible deceleration and stopping, avoiding rigid impact stopping that causes the gear disk 13 to shift, ensuring clamping and positioning accuracy, and improving the stability of measurement data. When multiple sets of placement boxes 21 are lined up in sequence, this elastic structure can also buffer the collision impact of adjacent workstations, ensuring stable workstation arrangement and preventing clamping from loosening.

[0051] Measurement completed, material unloading and resetting steps: The metal sensor 48, the electromagnet ring 45, and the drive unit of the conveyor frame 11 are all connected to the unified power supply and main control circuit of the equipment. The metal sensor 48 is only used as the trigger signal input terminal for workpiece arrival detection and is responsible for triggering the clamping action during the feeding stage.

[0052] When the placement box 21 carries the tested gear disc 13 to the unloading station, the main control system of the equipment receives the station arrival signal and restores power to the electromagnet ring 45. The electromagnet ring 45 generates magnetic attraction again, attracting the metal slide rod 42 to rise upwards, and stretching the second reset spring 44 again to complete energy storage. The metal slide rod 42 drives the connecting plate 43 to rise synchronously, pulling the connecting rod group 46 to reopen the included angle, causing the fixing block 47 to retract inwards, releasing the tension constraint on the inner ring wall of the gear disc 13. The operator can then remove the tested gear disc 13 from the placement frame 41.

[0053] After the material is unloaded, the empty placement box 21 returns to its original position along with the conveyor frame 11. The electromagnet ring 45 remains energized and engaged, and the fixing block 47 remains in a retracted position. The next round of material loading and waiting cycle begins. The entire clamping, inspection, and loosening process operates in a closed loop, without the need for manual operation of the clamps to lock and unlock.

[0054] Structural effect: The transmission consisting of the limiting worm 22 and the worm wheel 25 has a reverse self-locking characteristic, and the rotation angle and lifting position of the gear disk 13 can remain stable. It will not move due to measurement vibration or external force contact, ensuring the stability of the workpiece position during laser measurement and improving the repeatability and reliability of the detection data.

[0055] The entire rotation, lifting, and clamping action is achieved through a purely mechanical linkage structure, without complex electrical control actuators. The equipment has a low failure rate and low maintenance costs, making it suitable for continuous batch gear testing in workshops.

[0056] The metal sensor 48 works in conjunction with the electromagnet ring 45 to automatically clamp the workpiece when it is in place and automatically release it when it is in position. The entire process does not require manual operation of the locking structure, which improves the efficiency of loading and unloading operations and is suitable for the use of batch gear automated inspection production lines.

[0057] By relying on the elastic driving force of the second return spring 44 to drive multiple sets of fixing blocks 47 to expand outward synchronously and evenly press against the inner ring wall of the gear disk 13 to complete self-centering clamping. This structure can adaptively adjust the expansion range according to the inner diameter of the gear hole, adapting to the clamping of gear disks 13 with various inner diameter specifications, without the need to change the clamps, and the equipment has strong adaptability and flexibility; at the same time, the clamping components are located in the inner hole area of ​​the gear, and the outer teeth and end face of the gear are completely exposed without clamp obstruction, avoiding the formation of measurement blind spots, and adapting to the requirements of laser full contour detection.

[0058] By relying on the cooperation of metal sensor 48 and electromagnet ring 45, the entire process of automatic clamping of workpieces is realized, which is automatically clamped when the workpiece is in place and automatically released when the workpiece is unloaded. There is no need for manual operation of locking and unlocking structure, which effectively shortens the auxiliary time for loading and unloading, improves the efficiency of inspection operation, and is suitable for the production needs of continuous automated inspection of batch gears in the workshop.

[0059] The transmission structure composed of the limiting worm 22 and the worm wheel 25 has a reverse self-locking characteristic, which can keep the rotation angle and lifting position of the gear disk 13 stable and prevent it from moving due to measurement vibration or external force. This ensures that the workpiece posture is constant during laser measurement and improves the repeatability and reliability of the detection data.

[0060] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gear measuring device based on a laser sensor, comprising a conveyor frame (11), a laser measuring device (12), and a gear disk (13), wherein the laser measuring device (12) is disposed on the top of the conveyor frame (11), and the gear disk (13) is disposed on the top of the conveyor frame (11), characterized in that, The top of the conveyor frame (11) is provided with several multi-angle measuring components and fixing components; The multi-angle measuring component includes a placement box (21), which is slidably connected to the top of the conveyor frame (11). A limiting worm gear (22) is rotatably connected inside the placement box (21). A gear rod (23) is fixedly connected to the bottom of the limiting worm gear (22), and a limiting hollow sleeve (24) is slidably connected to the top of the limiting worm gear (22). The fixing assembly includes a placement frame (41), which is fixedly connected to the top of the limiting hollow sleeve (24). A metal slide rod (42) is slidably connected to the top of the placement frame (41), and an electromagnet ring (45) is sleeved on the outer wall of the metal slide rod (42). The electromagnet ring (45) is fixedly connected to the top of the inner cavity of the placement frame (41).

2. The gear measuring device based on a laser sensor according to claim 1, characterized in that, The multi-angle measuring component includes a worm gear (25), which is rotatably connected inside the placement box (21). The worm gear (25) meshes with a limiting worm (22). An eccentric disk (26) is snapped onto the outer wall of the worm gear (25), and a connecting rod (29) is slidably connected to the outer wall of the eccentric disk (26).

3. The gear measuring device based on a laser sensor according to claim 2, characterized in that, The multi-angle measuring component includes a lifting push rod (27), which is rotatably connected to the top of the inner cavity of the placement box (21). The end of the lifting push rod (27) away from the placement box (21) is rotatably connected to a bearing plate (28), and the end of the connecting rod (29) away from the eccentric plate (26) is rotatably connected to the middle of the lifting push rod (27).

4. The gear measuring device based on a laser sensor according to claim 1, characterized in that, The fixing assembly includes a connecting plate (43), which is fixedly connected to the top of the metal slide bar (42). A second return spring (44) is fixedly connected to the bottom of the inner cavity of the placement frame (41), and the end of the second return spring (44) away from the placement frame (41) is fixedly connected to the bottom of the metal slide bar (42).

5. A gear measuring device based on a laser sensor according to claim 4, characterized in that, The fixing component includes several sets of connecting rods (46), which are arranged in a ring and rotatably connected to the placement frame (41) and the connecting plate (43). Each of the several sets of connecting rods (46) is rotatably connected to a fixing block (47) at the end away from the placement frame (41) and the connecting plate (43).

6. The gear measuring device based on a laser sensor according to claim 1, characterized in that, The top of the placement rack (41) is provided with several metal sensors (48) arranged in a ring.

7. The gear measuring device based on a laser sensor according to claim 1, characterized in that, The top of the conveyor frame (11) is provided with a parking component, which includes a toothed rack (31). The toothed rack (31) is fixedly connected to the top of the conveyor frame (11). A positioning block group (32) is fixedly connected to the outer wall of the toothed rack (31). A slide rod group (33) is slidably connected inside the positioning block group (32).

8. A gear measuring device based on a laser sensor according to claim 7, characterized in that, The parking assembly includes a toothed block (34), which is fixedly connected to one end of the slide bar assembly (33) away from the positioning block assembly (32). A first return spring (35) is symmetrically sleeved on the outer wall of the slide bar assembly (33). One end of the first return spring (35) is fixedly connected to the toothed block (34), and the other end of the first return spring (35) away from the toothed block (34) is fixedly connected to the positioning block assembly (32).

9. A gear measuring device based on a laser sensor according to claim 7, characterized in that, The gear rod (23) and the toothed rack (31) are at the same horizontal height, and the gear rod (23) and the toothed rack (31) mesh with each other.

10. A gear measuring device based on a laser sensor according to claim 3, characterized in that, The inner side of the bearing disc (28) is fixedly connected to the bottom of the limiting hollow sleeve (24).

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