A three-dimensional gear measuring device

Abstract

The application belongs to the technical field of measuring devices, and discloses a three-dimensional gear measuring device, which comprises a detection box, a controller is arranged on the detection box, the controller comprises a display module, a control module and an operation module, two feeding areas and a detection area are arranged on the detection box, the two feeding areas are symmetrically arranged about the detection area, a moving mechanism is arranged on the detection box, two positioning shells are fixed on the moving end of the moving mechanism, the moving mechanism is used for driving the two positioning shells to synchronously move, one of the positioning shells is located on the detection area, and the other positioning shell is located on the detection area, and a laser detection mechanism for profile detection of a gear is arranged on the detection box. Through improvement of the existing structure, the application eliminates the cumbersome operation of manual disassembly or clamping in the prior art, eliminates the waiting time for clamping the product to be detected after the product is loosened after detection is completed, and is also beneficial to improving the detection efficiency of the device.

Description

Technical Field

[0001] This invention relates to the field of measuring device technology, and in particular to a three-dimensional gear measuring device. Background Technology

[0002] As a core component of mechanical transmission systems, gears are widely used in automobiles, aerospace, precision instruments, industrial robots and other fields. Their manufacturing precision directly affects transmission efficiency, motion stability, noise level and equipment lifespan. After the gears are manufactured and formed, their precision needs to be measured by measuring devices. These measuring devices are generally divided into contact and non-contact types, with non-contact types including laser detection devices.

[0003] Existing laser gear measuring devices mostly adopt a single-station detection structure. The loading, unloading, clamping, and detection operations of gears must be performed sequentially. The next gear to be detected can only be manually clamped and positioned after the previous gear has completed the entire process of detection and has been manually unclamped. This undoubtedly increases the overall detection time and reduces the overall detection efficiency of the device. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a three-dimensional gear measuring device.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a three-dimensional gear measuring device, comprising a detection box, a controller provided on the detection box, the controller including a display module, a control module and a calculation module, the detection box having two feeding areas and a detection area, the two feeding areas being symmetrically arranged about the detection area, the detection box having a moving mechanism, two positioning shells fixed on the moving end of the moving mechanism, the moving mechanism being used to drive the two positioning shells to move synchronously, one positioning shell being located on the detection area and the other positioning shell being located on the detection area, the detection box having a laser detection mechanism for contour detection of the gear, each positioning shell having a clamping mechanism for automatically clamping or releasing the gear, the clamping mechanism clamping the gear when the gear is located in the detection area, and the clamping mechanism releasing the gear when the gear is located in the feeding area.

[0006] By adopting the above technical solution, the clamping mechanisms on both positioning shells are in the released state. Operators or feeding devices can place the gears to be inspected into the two positioning shells respectively. After feeding is completed, the controller's control module instructs the moving mechanism to move, causing the two positioning shells to move synchronously, so that one positioning shell moves to the inspection area and the other moves to another feeding area. Simultaneously, the clamping mechanism on the positioning shell in the inspection area automatically clamps the gear, ensuring the gear's position is fixed during inspection. The laser inspection mechanism then starts contour inspection of the gear. The inspection data is transmitted to the computing module for processing and displayed by the display module. While the gears in the testing zone are being inspected, the operator or the feeding device can perform loading and unloading operations on the positioning shells in another feeding zone (removing the inspected gear or inserting a new gear to be inspected). After the gears in the current testing zone are inspected, the clamping mechanism automatically releases, and the moving mechanism drives the two positioning shells to move synchronously again, allowing the new gear to be inspected to enter the testing zone and the inspected gear to enter the feeding zone. The above clamping, inspection, and parallel loading and unloading process is repeated, eliminating the cumbersome manual disassembly or clamping operations of existing technologies. It also eliminates the waiting time required to wait for the inspected product to be released before clamping the product to be inspected, which also helps to improve the inspection efficiency of the device. Specifically, during laser inspection, the laser emitter emits a focused point / line laser beam, which is projected onto the tooth surface being tested and undergoes diffuse reflection. The reflected light passes through a high-precision imaging lens and forms a focused spot on a CCD / CMOS area array detector. When the height of the tooth surface changes (concave / convex, reshaped, or deviated), the imaging position of the reflected spot on the detector will shift linearly. Based on the pre-calibrated trigonometric relationships (laser emission angle, lens focal length, and spot offset), the height change value of the measured point can be accurately calculated, thus determining whether the tooth surface meets the requirements.

[0007] Furthermore, the moving mechanism includes a mounting shell fixed to the detection box, a moving screw rotatably mounted inside the mounting shell, a slider slidably disposed inside the mounting shell and threadedly connected to the moving screw, a moving motor fixed to the mounting shell and driving the moving screw to rotate, and a sliding rod fixed inside the mounting shell and slidably engaged with the slider. The positioning shell is disposed on the slider, and the number of positioning shells is equal to the number of sliders and their positions correspond one-to-one.

[0008] By adopting the above technical solution, the moving motor drives the moving screw to rotate synchronously inside the mounting housing. Since the slider is threadedly connected to the moving screw, and the slide bar restricts the circumferential rotation of the slider (making it unable to rotate with the moving screw), the slider reciprocates along the linear slide bar by changing the rotation direction of the output end of the moving motor.

[0009] Furthermore, each of the positioning shells is a hollow cylindrical structure, and the top of each positioning shell has multiple sliding through holes evenly distributed about the axis of the positioning shell. The clamping mechanism includes a clamping assembly, which includes a clamping block slidably disposed in the sliding through hole, a limiting rod fixed in the sliding through hole and slidingly engaged with the clamping block, an adjusting shaft disposed at the bottom of the clamping block, and an adjusting disk rotatably mounted in the positioning shell and coaxially disposed with the positioning shell. The adjusting disk has an adjusting through hole eccentrically disposed with respect to the adjusting disk, and the adjusting shaft passes through the adjusting through hole and slidesly engaged with the adjusting through hole. The number of clamping blocks, the number of limiting rods, the number of adjusting shafts, and the number of sliding through holes are all equal and their positions correspond one-to-one. The sidewalls of the multiple clamping blocks located in the detection area that are far apart from each other are all abutted against the inner wall of the gear to be detected. The clamping mechanism also includes a rotating assembly for driving the adjusting disk to rotate.

[0010] By adopting the above technical solution, the gear is sleeved on the clamping block, driving the adjusting plate to rotate at a fixed angle around the coaxial axis of the positioning shell. During the rotation, the eccentrically set adjusting through hole rotates synchronously with the adjusting plate, applying a radially outward thrust to the adjusting shaft passing through it. At the same time, the sliding through hole and the limiting rod form a double limit, restricting the clamping block to only make linear reciprocating movements along the radial direction of the positioning shell, thus realizing the automatic centering clamping or releasing operation of the gear. In addition, by adjusting the distance between the four clamping blocks, it can accommodate gears of various internal diameters, expanding the scope of application.

[0011] Furthermore, the rotating assembly includes a drive column fixed to the bottom of the adjusting plate and coaxially arranged with the adjusting plate, a rotating gear fixedly sleeved on the drive column, a rotating screw that penetrates the side wall of the positioning housing, a limiting rod fixed to the inner wall of the positioning housing, a rotating rack threadedly connected to the rotating screw and meshing with the rotating gear, a rotating gear fixedly sleeved on the rotating screw, and a rotating rack fixed to the top of the detection box and meshing with the rotating gear. The two rotating screws have threads with opposite directions of rotation, and the limiting rod penetrates the rotating rack and slides with the rotating rack.

[0012] By adopting the above technical solution, when the moving mechanism drives the positioning shell to move linearly along the path of loading area → detection area or detection area → loading area, the rotating rack fixed on the detection box remains stationary. The rotating gear, which moves synchronously with the positioning shell, will mesh and roll along the tooth surface of the rotating rack, converting the linear movement of the positioning shell into the fixed-axis rotation of the rotating gear. The rotating gear drives the coaxially fixed rotating screw to rotate synchronously. At this time, the limiting rod passing through the rotating rack restricts the circumferential rotational freedom of the rotating rack, allowing it to slide linearly along the axial direction of the rotating screw. Therefore, the rotational motion of the rotating screw is precisely converted into the linear displacement of the rotating rack along the limiting rod. The linearly moving rotating rack drives the rotating gear to rotate coaxially and fixedly through tooth surface meshing. The rotating gear drives the adjusting plate to rotate synchronously through the coaxially fixed drive column at the bottom. Then, through the linkage between the adjusting through hole and the adjusting shaft, all clamping blocks are driven to move in the direction away from or close to the axis of the positioning shell, thus realizing the automatic clamping or loosening operation of the gear.

[0013] Furthermore, the rotating assembly includes a rotary motor fixed to the bottom wall of the positioning shell and an electric rotary table fixed to the slider. The output end of the rotary motor is fixed to the adjustment plate and coaxially arranged. The positioning shell is fixed to the rotating end of the electric rotary table. The number of electric rotary tables, the number of rotary motors, and the number of positioning shells are all equal and their positions correspond one-to-one.

[0014] By adopting the above technical solution, the rotary motor serves as the direct power source for the clamping mechanism. Its output end is coaxially fixed with the adjusting plate. Through forward and reverse fixed-angle rotation, the rotation angle of the adjusting plate is precisely controlled. Furthermore, through the linkage between the eccentric adjusting through-hole and the adjusting shaft, the rotational motion is converted into the radial linear reciprocating motion of the clamping block, achieving automatic clamping and releasing. In addition, when the laser detection mechanism detects the helical gear, since the helical gear tooth grooves have an inclined structure, the electric rotary table is operated to drive the positioning shell to rotate at a low speed, thus expanding the applicability of the device.

[0015] Furthermore, the laser detection mechanism includes a detection component, which includes an arc block fixed to the top of the detection box and coaxially arranged with the gear located in the detection area, a sliding seat slidably arranged on the side wall of the arc block, a linear module fixed to the top of the sliding seat, a horizontal plate fixed to the moving end of the linear module, and a laser profilometer fixed to the horizontal plate. The laser profilometer includes a laser emitter, a high-precision imaging lens, and a CCD / CMOS area array detector. The laser emitter corresponds to one of the tooth surfaces of the gear under test. A limiting through hole coaxially arranged with the arc block is provided through the side wall of the sliding seat. The arc block passes through the limiting through hole and slides with the limiting through hole. The laser detection mechanism also includes a displacement component for driving the sliding seat to move along the side wall of the arc block.

[0016] By adopting the above technical solution, when the gear moves to the detection area, the laser emitter of the laser profilometer corresponds exactly to one of the tooth surfaces of the gear. At this time, the laser emitter emits a focal point, which illuminates the tooth surface. Simultaneously, the linear module is operated, causing its moving end to drive the horizontal plate and the laser profilometer fixed to the horizontal plate to descend. The focal point will descend along the tooth surface to a position near the bottom of the gear. Then, the laser profilometer is operated to rise until the focal point of the laser emitter moves to a position near the top of the tooth surface. During this process, the reflected light passes through a high-precision imaging lens and forms a focused light spot on the CCD / CMOS area array detector. The continuous focused light spot can display the overall condition of the tooth surface.

[0017] Furthermore, the sliding seat has an internally hollow structure, and the displacement assembly includes an arc rack fixed to the top of the arc block and coaxially arranged with the arc block, a drive rod that passes through the top of the sliding seat and is rotatably connected to the sliding seat, a displacement gear fixed on the sliding seat and driving the drive rod to rotate, and a displacement motor fixedly sleeved on the drive rod and meshing with the arc rack. The arc rack passes through and engages with the limiting through hole, and the lower end of the drive rod is rotatably connected to the inner bottom wall of the sliding seat.

[0018] By adopting the above technical solution, the displacement gear drives the drive rod to rotate, which in turn causes the displacement motor fixed to the drive rod to rotate. Since the displacement motor meshes with the arc rack, the sliding seat moves in an arc along the outer wall of the arc block, thus adjusting the detection angle of the laser profilometer. Because gears of the same size but different modules have different included angles between their tooth surfaces, and because odd-numbered gears have different included angles with even-numbered gears, adjusting the detection angle of the laser profilometer can accommodate various types of gears, thus expanding the applicability of the device.

[0019] Furthermore, the positioning shell is provided with a limiting mechanism. The number of limiting mechanisms is equal to the number of positioning shells and their positions correspond one-to-one. The limiting mechanism includes a limiting component, which includes a mounting plate slidably disposed on the positioning shell and an insert block disposed on the mounting plate. The insert block passes through one of the tooth grooves of a corresponding gear. The limiting mechanism also includes an adjustment component for driving the insert block to move.

[0020] By adopting the above technical solution, the gear to be tested is placed on the top of the positioning shell in the feeding area, and one of the tooth grooves of the gear is inserted into the insert block to position the gear. After the gear to be tested is moved to the testing area, the focal point of the transmitter is aligned with one of the tooth surfaces of the gear. This eliminates the need for the tedious operation of manually adjusting the position of the gear when placing it, which helps to improve the testing speed of the device.

[0021] Furthermore, the insert block has a threaded groove on the side away from the axis of the positioning shell, the mounting plate has an L-shaped structure, and the adjustment assembly includes an adjustment screw that passes through the vertical section of the mounting plate and is rotatably mounted on the mounting plate, an adjustment knob that is fixed to the end of the adjustment screw away from the insert block and is coaxial with the adjustment screw, and a crossbar that is fixed to the mounting plate. The adjustment screw is threadedly connected to the threaded groove, and the crossbar passes through the side wall of the insert block and slides with the insert block.

[0022] By adopting the above technical solution, rotating the adjustment knob drives the adjustment screw to rotate. Under the limit of the crossbar, the insert block that is threadedly connected to the adjustment screw moves towards or away from the axis of the positioning shell. This can accommodate gears of different sizes with the same module for positioning, thus expanding the applicability of the device. In addition, rotating the adjustment screw disengages the insert block from the crossbar, at which point insert blocks of other sizes can be replaced to accommodate gears of other modules, further expanding the applicability of the device.

[0023] Furthermore, the adjusting shaft is rotatably mounted on the bottom of the clamping block, and a wave-shaped groove is provided on the side wall of the clamping block away from the axis of the positioning shell. A ball bearing that is movably mounted on the bottom of the sliding seat and is rolledly connected to the top of the detection box is also provided.

[0024] By adopting the above technical solution, the wavy groove design increases the friction between the clamping block and the inner wall of the gear. The ball bearings, while supporting the sliding seat, reduce the friction between it and the testing box.

[0025] In summary, the present invention has the following beneficial effects: In this application, by improving the existing structure, the cumbersome operation of manual disassembly or clamping in the prior art is eliminated, and the waiting time required to wait for the product to be tested to be released after the test is completed before clamping the product to be tested is also eliminated, which is conducive to improving the testing efficiency of the device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 yes Figure 1 Another perspective is used to highlight the schematic diagram of the connection structure between the slider and the positioning shell; Figure 3 This is a schematic diagram of Embodiment 1 of the present invention used to highlight the internal structure of the mounting shell; Figure 4 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention, which highlights the connection structure between the movable screw and the mounting housing; Figure 5 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention used to highlight the internal structure of the positioning shell; Figure 6This is a cross-sectional schematic diagram of Embodiment 1 of the present invention, which highlights the connection structure between the drive column and the adjustment disc; Figure 7 This is a schematic diagram of Embodiment 1 of the present invention to highlight the connection structure between the arc block and the sliding seat; Figure 8 This is a cross-sectional schematic diagram of Embodiment 1 of the present invention used to highlight the internal structure of the sliding seat; Figure 9 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 10 This is a cross-sectional schematic diagram of Embodiment 2 of the present invention used to highlight the internal structure of the positioning shell.

[0027] In the diagram: 1. Detection box; 2. Moving mechanism; 21. Mounting shell; 22. Moving screw; 23. Slider; 24. Moving motor; 25. Slide rod; 3. Positioning shell; 4. Laser detection mechanism; 41. Detection component; 411. Arc block; 412. Sliding seat; 413. Linear module; 414. Horizontal plate; 415. Laser profilometer; 42. Displacement component; 421. Arc rack; 422. Drive rod; 423. Displacement gear; 424. Displacement motor; 5. Sliding through hole; 6. Clamping mechanism; Clamping component; 611. Clamping block; 61 2. Limiting rod; 613. Adjusting shaft; 614. Adjusting disc; Rotating assembly; 621. Drive column; 622. Rotating gear; 623. Rotating screw; 624. Limiting rod; 625. Rotating rack; 626. Rotating gear; 627. Rotating rack; 7. Adjusting through hole; 8. Limiting mechanism; 81. Limiting assembly; 811. Mounting plate; 812. Insert block; 82. Adjusting assembly; 821. Adjusting screw; 822. Adjusting knob; 823. Crossbar; 9. Limiting through hole; 10. Threaded groove; 11. Rotary motor; 12. Electric rotary table. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Example 1: As Figure 1-8As shown in the illustration, this application discloses a three-dimensional gear measuring device, including a detection box 1, a moving mechanism 2, a clamping mechanism 6, and a limiting mechanism 8. A controller is mounted on the detection box 1, comprising a display module, a control module, and a calculation module. The detection box 1 has two feeding areas and a detection area, symmetrically arranged about the detection area. Two positioning shells 3 are fixed to the moving end of the moving mechanism 2. Each positioning shell 3 is a hollow cylindrical structure, and its top has multiple sliding through holes 5 evenly distributed about its axis. One positioning shell 3 is located in the detection area. When the gear is in the detection area, the clamping mechanism 6 clamps the gear; when the gear is in the feeding area, the clamping mechanism 6 releases the gear. With both clamping mechanisms 6 on the two positioning shells 3 in the released state, operators or feeding devices can place the gears to be inspected into the two positioning shells 3 respectively. After feeding is completed, the controller module instructs the moving mechanism 2 to move, causing the two positioning shells 3 to move synchronously, so that one positioning shell 3 moves to the inspection area and the other positioning shell 3 moves to another feeding area. At the same time, the clamping mechanism 6 on the positioning shell 3 in the inspection area automatically clamps the gear, ensuring that the gear is fixed in position during the inspection process. The laser inspection mechanism 4 starts to perform contour inspection on the gear. The inspection data is transmitted to the computing module for processing and then displayed by the display module. While the gears are being inspected, the operator or the feeding device can perform loading and unloading operations on the positioning shell 3 in another feeding area (removing the inspected gear or inserting a new gear to be inspected). After the gears in the current inspection area are inspected, the clamping mechanism 6 automatically releases, and the moving mechanism 2 drives the two positioning shells 3 to move synchronously again, so that the new gear to be inspected enters the inspection area and the inspected gear enters the feeding area. The above clamping, inspection, and parallel loading and unloading process is repeated, eliminating the cumbersome manual disassembly or clamping operations of the existing technology. At the same time, it also eliminates the waiting time that requires waiting for the inspected product to be released before clamping the product to be inspected, which is also conducive to improving the inspection efficiency of the device. Specifically, during the inspection, the laser inspection unit 4 emits a focused point / line laser beam, which is diffusely reflected after being projected onto the tooth surface being tested. The reflected light passes through a high-precision imaging lens and forms a focused spot on a CCD / CMOS array detector. When the height of the tooth surface changes (concave / convex, reshaped, or deviated), the imaging position of the reflected spot on the detector will shift linearly. Based on the pre-calibrated trigonometric relationship (laser emission angle, lens focal length, and spot offset), the height change value of the measured point can be accurately calculated, thus determining whether the tooth surface meets the requirements.

[0030] The moving mechanism 2 is mounted on the detection box 1 and is used to drive the two positioning shells 3 to move synchronously. The moving mechanism 2 includes a mounting shell 21, a moving screw 22, a slider 23, a moving motor 24, and a sliding rod 25. The mounting shell 21 is fixed to the detection box 1. The moving screw 22 is rotatably mounted inside the mounting shell 21, and the slider 23 is slidably mounted inside the mounting shell 21 and threadedly connected to the moving screw 22. The positioning shells 3 are mounted on the slider 23, and the number of positioning shells 3 is equal to the number of sliders 23, with their positions corresponding one-to-one. The moving motor 24 is fixed to the mounting shell 21 and drives the moving screw 22 to rotate, and the sliding rod 25 is fixed inside the mounting shell 21 and slides in cooperation with the slider 23. The moving motor 24 drives the moving screw 22 to rotate synchronously within the mounting housing 21. Since the slider 23 is threadedly connected to the moving screw 22, and the slide bar 25 restricts the circumferential rotation of the slider 23 (preventing it from rotating with the moving screw 22), the slider 23 reciprocates along the linear motion of the slide bar 25 by changing the rotation direction of the output end of the moving motor 24.

[0031] A clamping mechanism 6 is mounted on the positioning housing 3 and is used to automatically clamp or release the gear. The clamping mechanism 6 includes a clamping assembly and a rotating assembly. The clamping assembly includes clamping blocks 611, limiting rods 612, adjusting shafts 613, and adjusting discs 614. The clamping blocks 611 are slidably disposed within sliding through holes 5. The number of clamping blocks 611, limiting rods 612, adjusting shafts 613, and sliding through holes 5 are all equal and their positions correspond one-to-one. The sidewalls of the multiple clamping blocks 611 located in the detection area, which are far apart from each other, abut against the inner wall of the gear to be detected. The limiting rods 612 are fixed within the sliding through holes 5 and slide in cooperation with the clamping blocks 611. The adjusting shafts 613 are disposed at the bottom of the clamping blocks 611, and the adjusting discs 614 are rotatably mounted within the positioning housing 3 and coaxially disposed with the positioning housing 3. An adjustment through hole 7, eccentrically positioned on the adjustment disc 614, is provided through the adjustment disc 614. The adjustment shaft 613 passes through the adjustment through hole 7 and slides within it. When the gear is fitted onto the clamping block 611, the adjustment disc 614 is driven to rotate at a fixed angle around the coaxial axis of the positioning shell 3. During rotation, the eccentrically positioned adjustment through hole 7 rotates synchronously with the adjustment disc 614, applying a radially outward thrust to the adjustment shaft 613. Simultaneously, the sliding through hole 5 and the limiting rod 612 form a double limit, restricting the clamping block 611 to only perform linear reciprocating motion along the radial direction of the positioning shell 3, thus achieving automatic centering and clamping / unlocking of the gear. Furthermore, by adjusting the distance between the four clamping blocks 611, various internal diameter gears can be accommodated, expanding the applicability range.

[0032] The rotating assembly drives the adjusting disk 614 to rotate. The rotating assembly includes a drive column 621, a rotating gear 622, a rotating screw 623, a limiting rod 624, a rotating rack 625, a rotating gear 626, and a rotating rack 627. The drive column 621 is fixed to the bottom of the adjusting disk 614 and coaxially arranged with it. The rotating gear 622 is fixedly sleeved on the drive column 621. The rotating screw 623 passes through the side wall of the positioning housing 3, and the two rotating screws 623 have threads with opposite directions. The limiting rod 624 passes through the rotating rack 625 and slides with it. The limiting rod 624 is fixed to the inner wall of the positioning housing 3. The rotating rack 625 is threaded onto the rotating screw 623 and meshes with the rotating gear 622. The rotating gear 626 is fixedly sleeved on the rotating screw 623. The rotating rack 627 is fixed to the top of the detection box 1 and meshes with the rotating gear 626. When the moving mechanism 2 drives the positioning shell 3 to move linearly along the path of feeding area → detection area or detection area → feeding area, the rotating rack 627 fixed on the detection box 1 remains stationary, and the rotating gear 626, which moves synchronously with the positioning shell 3, will mesh and roll along the tooth surface of the rotating rack 627, converting the linear movement of the positioning shell 3 into the fixed-axis rotation of the rotating gear 626. The rotating gear 626 drives the coaxially fixed rotating screw 623 to rotate synchronously. At this time, the limiting rod 624 passing through the rotating rack 625 restricts the circumferential rotational freedom of the rotating rack 625, allowing it to slide linearly along the axial direction of the rotating screw 623. Therefore, the rotational motion of the rotating screw 623 is precisely converted into the linear displacement of the rotating rack 625 along the limiting rod 624. The linearly moving rotating rack 625 drives the rotating gear 622 to rotate coaxially and fixedly through tooth meshing. The rotating gear 622 drives the adjusting plate 614 to rotate synchronously through the driving column 621 coaxially fixed at the bottom. Then, through the linkage between the adjusting through hole 7 and the adjusting shaft 613, it drives all the clamping blocks 611 to move in the direction away from or close to the axis of the positioning shell 3, thus realizing the automatic clamping or loosening operation of the gear.

[0033] A laser detection mechanism 4 is mounted on the detection box 1 and is used to perform contour detection on the gear. The laser detection mechanism 4 includes a detection component 41 and a displacement component 42. The detection component 41 includes an arc block 411, a sliding seat 412, a linear module 413, a horizontal plate 414, and a laser contour analyzer 415. The arc block 411 is fixed to the top of the detection box 1 and coaxially arranged with the gear located in the detection area. A limiting through hole 9, coaxially arranged with the arc block 411, is provided through the side wall of the sliding seat 412. The arc block 411 passes through the limiting through hole 9 and slides within it. The sliding seat 412 is slidably mounted on the side wall of the arc block 411 and has a hollow internal structure. The linear module 413 is fixed to the top of the sliding seat 412, and the horizontal plate 414 is fixed to the moving end of the linear module 413. A laser profilometer 415 is fixed on a horizontal plate 414. The laser profilometer 415 includes a laser emitter, a high-precision imaging lens, and a CCD / CMOS area array detector. The laser emitter corresponds to one of the tooth surfaces of the gear under test. When the gear moves to the detection area, the laser emitter of the laser profilometer 415 corresponds exactly to one of the tooth surfaces of the gear. At this time, the laser emitter emits a focal point, which illuminates the tooth surface. Simultaneously, the linear module 413 is operated, causing its moving end to drive the horizontal plate 414 and the laser profilometer 415 fixed to the horizontal plate 414 to descend. The focal point will descend along the tooth surface to a position near the bottom of the gear. Then, the laser profilometer 415 is operated to rise until the focal point of the laser emitter moves to a position near the top of the tooth surface. During this process, the reflected light passes through the high-precision imaging lens and forms a focused light spot on the CCD / CMOS area array detector. The continuous focused light spot can display the overall condition of the tooth surface.

[0034] The displacement assembly 42 is used to drive the sliding seat 412 to move along the side wall of the arc block 411. The displacement assembly 42 includes an arc rack 421, a drive rod 422, a displacement gear 423, and a displacement motor 424. The arc rack 421 is fixed to the top of the arc block 411 and is coaxially arranged with the arc block 411. The arc rack 421 passes through the limiting through hole 9 and engages with it. The lower end of the drive rod 422 is rotatably connected to the inner bottom wall of the sliding seat 412. The drive rod 422 is disposed through the top of the sliding seat 412 and is rotatably connected with the sliding seat 412. The displacement gear 423 is fixed on the sliding seat 412 and drives the drive rod 422 to rotate. The displacement motor 424 is fixedly sleeved on the drive rod 422 and meshes with the arc rack 421. The displacement gear 423 drives the drive rod 422 to rotate, which in turn causes the displacement motor 424, which is fixed to the drive rod 422, to rotate. Since the displacement motor 424 meshes with the arc rack 421, the sliding seat 412 moves in an arc along the outer wall of the arc block 411, thereby adjusting the detection angle of the laser profilometer 415. Because gears of the same size but different modules have different angles between their tooth surfaces, and because odd-numbered gears have different angles with even-numbered gears, adjusting the detection angle of the laser profilometer 415 can accommodate various types of gears, thus expanding the applicability of the device.

[0035] The limiting mechanism 8 is mounted on the positioning shell 3. The number of limiting mechanisms 8 is equal to the number of positioning shells 3, and their positions correspond one-to-one. The limiting mechanism 8 includes a limiting component 81 and an adjusting component 82. The limiting component 81 includes a mounting plate 811 and an insert block 812. The mounting plate 811 is slidably mounted on the positioning shell 3 and has an L-shaped structure. The insert block 812 is mounted on the mounting plate 811. A threaded groove 10 is opened on the side of the insert block 812 away from the axis of the positioning shell 3. The insert block 812 passes through one of the tooth slots of the corresponding gear. The gear to be tested is placed on the top of the positioning shell 3 in the feeding area, and one of the tooth slots of the gear is inserted into the insert block 812 to position the gear. After the gear to be tested is moved to the testing area, the focal point of the transmitter is exactly aligned with one of the tooth surfaces of the gear. This eliminates the tedious operation of manually adjusting the gear position when placing the gear to be tested, which helps to improve the testing speed of the device.

[0036] The adjusting assembly 82 includes an adjusting screw 821, an adjusting knob 822, and a crossbar 823. The adjusting screw 821 passes through the vertical section of the mounting plate 811 and is rotatably mounted to the mounting plate 811. The adjusting screw 821 is threadedly connected to the threaded groove 10. The adjusting knob 822 is fixed to the end of the adjusting screw 821 away from the insert block 812 and is coaxially arranged with the adjusting screw 821. The crossbar 823 is fixed to the mounting plate 811, passes through the side wall of the insert block 812, and slides in engagement with the insert block 812. Rotating the adjustment knob 822 causes the adjustment screw 821 to rotate. Under the limit of the crossbar 823, the insert 812, which is threadedly connected to the adjustment screw 821, moves toward or away from the axis of the positioning shell 3. This allows it to accommodate gears of different sizes with the same module, thus expanding the applicability of the device. In addition, rotating the adjustment screw 821 disengages the insert 812 from the crossbar 823, allowing the insert 812 of other sizes to be replaced to accommodate gears of other modules, further expanding the applicability of the device.

[0037] The adjusting shaft 613 is rotatably mounted on the bottom of the clamping block 611. A wavy groove is formed on the side wall of the clamping block 611 away from the axis of the positioning housing 3. A ball bearing, which is movably mounted on the bottom of the sliding seat 412 and rolls into contact with the top of the detection box 1, is also present. The wavy groove increases the friction between the clamping block 611 and the inner wall of the gear. The ball bearing, while supporting the sliding seat 412, reduces the friction between it and the detection box 1.

[0038] Example 2: In this example, the rotating assembly is replaced with a rotary motor 11 and an electric rotary table 12. Specifically, as follows... Figure 9-10 As shown, the rotating assembly includes a rotary motor 11 and an electric rotary table 12. The rotary motor 11 is fixed to the inner bottom wall of the positioning shell 3. The output end of the rotary motor 11 is fixed and coaxially arranged with the adjusting plate 614, and the electric rotary table 12 is fixed to the slider 23. The positioning shell 3 is fixed to the rotating end of the electric rotary table 12. The number of electric rotary tables 12, the number of rotary motors 11, and the number of positioning shells 3 are all equal and their positions correspond one-to-one. The rotary motor 11 serves as the direct power source of the clamping mechanism 6. Its output end is coaxially fixed with the adjusting plate 614. By rotating at fixed angles in both directions, the rotation angle of the adjusting plate 614 is precisely controlled. Then, through the linkage between the eccentric adjusting through hole 7 and the adjusting shaft 613, the rotational motion is converted into the radial linear reciprocating motion of the clamping block 611, realizing automatic clamping and loosening. In addition, when the laser detection mechanism 4 detects the helical gear, since the tooth groove of the helical gear has an inclined structure, the electric rotary table 12 is operated to drive the positioning shell 3 to rotate at a low speed, which expands the applicability of the device.

[0039] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A three-dimensional gear measuring device, characterized in that: The device includes a detection box (1), on which a moving mechanism (2) is provided. Two positioning shells (3) are fixed on the moving end of the moving mechanism (2). The moving mechanism (2) is used to drive the two positioning shells (3) to move synchronously. The detection box (1) is provided with a laser detection mechanism (4) for detecting the contour of the gear. Each positioning shell (3) is provided with a clamping mechanism (6) for automatically clamping or releasing the gear.

2. The three-dimensional gear measuring device according to claim 1, characterized in that: The moving mechanism (2) includes a mounting shell (21) fixed on the detection box (1), a moving screw (22) rotatably mounted in the mounting shell (21), a slider (23) slidably disposed in the mounting shell (21) and threadedly connected to the moving screw (22), a moving motor (24) fixed on the mounting shell (21) and driving the moving screw (22) to rotate, and a sliding rod (25) fixed in the mounting shell (21) and slidingly engaged with the slider (23). The positioning shell (3) is disposed on the slider (23), and the number of positioning shells (3) is equal to the number of sliders (23) and their positions correspond one-to-one.

3. The three-dimensional gear measuring device according to claim 1, characterized in that: Each of the positioning shells (3) is a hollow cylindrical structure. The top of each positioning shell (3) is provided with multiple sliding through holes (5) evenly distributed about the axis of the positioning shell (3). The clamping mechanism (6) includes a clamping assembly, which includes a clamping block (611) slidably disposed in the sliding through hole (5), a limiting rod (612) fixed in the sliding through hole (5) and slidingly engaged with the clamping block (611), an adjusting shaft (613) disposed at the bottom of the clamping block (611), and a rotatably mounted inside the positioning shell (3). An adjusting disk (614) is coaxially arranged with the positioning shell (3). An adjusting through hole (7) is provided through the adjusting disk (614) and is eccentrically arranged with the adjusting disk (614). The adjusting shaft (613) passes through the adjusting through hole (7) and slides with the adjusting through hole (7). The number of clamping blocks (611), the number of limiting rods (612), the number of adjusting shafts (613) and the number of sliding through holes (5) are all equal and their positions correspond one to one. The clamping mechanism (6) also includes a rotating component for driving the adjusting disk (614) to rotate.

4. The three-dimensional gear measuring device according to claim 3, characterized in that: The rotating assembly includes a drive column (621) fixed to the bottom of the adjusting plate (614) and coaxially arranged with the adjusting plate (614), a rotating gear (622) fixedly sleeved on the drive column (621), a rotating screw (623) passing through the side wall of the positioning shell (3), a limiting rod (624) fixed to the inner wall of the positioning shell (3), a rotating rack (625) threadedly connected to the rotating screw (623) and meshing with the rotating gear (622), a rotating gear (626) fixedly sleeved on the rotating screw (623), and a rotating rack (627) fixedly fixed to the top of the detection box (1) and meshing with the rotating gear (626). The two rotating screws (623) have opposite threads, and the limiting rod (624) passes through the rotating rack (625) and slides with the rotating rack (625).

5. A three-dimensional gear measuring device according to claim 3, characterized in that: The rotating assembly includes a rotary motor (11) fixed on the inner bottom wall of the positioning shell (3) and an electric rotary table (12) fixed on the slider (23). The output end of the rotary motor (11) is fixed and coaxially arranged with the adjustment plate (614). The positioning shell (3) is fixed on the rotating end of the electric rotary table (12). The number of electric rotary tables (12), the number of rotary motors (11), and the number of positioning shells (3) are all equal and their positions correspond one-to-one.

6. A three-dimensional gear measuring device according to claim 3, characterized in that: The laser detection mechanism (4) includes a detection component (41), which includes an arc block (411) fixed to the top of the detection box (1) and coaxially arranged with the gear in the detection area, a sliding seat (412) slidably arranged on the side wall of the arc block (411), a linear module (413) fixed to the top of the sliding seat (412), a horizontal plate (414) fixed to the moving end of the linear module (413), and a laser profilometer (415) fixed to the horizontal plate (414). The laser detection mechanism (4) includes a laser emitter, a high-precision imaging lens, and a CCD / CMOS area array detector. The laser emitter corresponds to one of the tooth surfaces of the gear under test. A limiting through hole (9) coaxially arranged with the arc block (411) is provided through the side wall of the sliding seat (412). The arc block (411) passes through the limiting through hole (9) and slides in cooperation with the limiting through hole (9). The laser detection mechanism (4) also includes a displacement component (42) for driving the sliding seat (412) to move along the side wall of the arc block (411).

7. A three-dimensional gear measuring device according to claim 6, characterized in that: The sliding seat (412) has an internally hollow structure. The displacement assembly (42) includes an arc rack (421) fixed to the top of the arc block (411) and coaxially arranged with the arc block (411), a drive rod (422) that passes through the top of the sliding seat (412) and is rotatably connected to the sliding seat (412), a displacement gear (423) fixed on the sliding seat (412) and driving the drive rod (422) to rotate, and a displacement motor (424) fixedly sleeved on the drive rod (422) and meshing with the arc rack (421). The arc rack (421) passes through the limiting through hole (9) and engages with it. The lower end of the drive rod (422) is rotatably connected to the inner bottom wall of the sliding seat (412).

8. A three-dimensional gear measuring device according to claim 1, characterized in that: The positioning shell (3) is provided with a limiting mechanism (8). The number of limiting mechanisms (8) is equal to the number of positioning shells (3) and their positions correspond one-to-one. The limiting mechanism (8) includes a limiting component (81). The limiting component (81) includes a mounting plate (811) slidably disposed on the positioning shell (3) and an insert (812) disposed on the mounting plate (811). The insert (812) passes into one of the tooth grooves of the corresponding gear. The limiting mechanism (8) also includes an adjusting component (82) for driving the insert (812) to move.

9. A three-dimensional gear measuring device according to claim 8, characterized in that: The insert (812) has a threaded groove (10) on the side away from the axis of the positioning shell (3). The mounting plate (811) has an L-shaped structure. The adjustment assembly (82) includes an adjustment screw (821) that passes through the vertical section of the mounting plate (811) and is rotatably mounted on the mounting plate (811), an adjustment knob (822) that is fixed to the end of the adjustment screw (821) away from the insert (812) and is coaxially arranged with the adjustment screw (821), and a crossbar (823) that is fixed on the mounting plate (811). The adjustment screw (821) is threadedly connected to the threaded groove (10), and the crossbar (823) passes through the side wall of the insert (812) and slides with the insert (812).

10. A three-dimensional gear measuring device according to claim 6, characterized in that: The adjusting shaft (613) is rotatably mounted on the bottom of the clamping block (611). The clamping block (611) has a wave-shaped groove on its side wall away from the axis of the positioning shell (3). The bottom of the sliding seat (412) is movably mounted with a ball bearing that is rotatably connected to the top of the detection box (1).

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