Positioning device for hollow gear dynamic balance test

Abstract

The invention relates to the technical field of gear test, and discloses a hollow gear dynamic balance test positioning device comprising a test shaft used for driving a to-be-tested gear to rotate for dynamic balance test; the positioning disc is fixedly arranged at one end of the testing shaft, sliding grooves are distributed in the inner side of the positioning disc in an annular array mode, clamping blocks are arranged on the outer side of the positioning disc in a sliding mode along the sliding grooves, and the clamping blocks distributed in the annular array mode are driven by external force to position and clamp a gear to be tested; the moving plate is arranged on the side, away from the to-be-tested gear, of the positioning disc in a sliding mode, and the moving plate is driven by external force to get close to the outer side of the to-be-tested gear and is coaxially matched with the testing shaft. The positioning device for the dynamic balance test of the hollow gear can effectively solve the problem that the positioning device is difficult to adapt to the dynamic balance test work of different types of hollow gears in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of gear testing, and in particular to a positioning device for dynamic balancing testing of hollow gears. Background Art

[0002] The hollow gear adopts an internal hollow structure with a through space in the middle, which can reduce weight and allow the matching shaft or cable to pass through, achieving a compact layout and multi-functional integration; the hollow gear has an uneven mass distribution due to the hollow structure, and the centrifugal force causes vibration during rotation (vibration acceleration> 50m / s 2 High-speed scenarios (such as CNC spindles > 10,000 RPM) will amplify vibration damage. In the related art, in order to position and install the hollow gear on the test shaft during the dynamic balancing test, for example, the patent with the prior art publication number CN119223524B provides a positioning device and method for the dynamic balancing test of the hollow gear. The device dynamically positions the hollow gear by setting an outer peripheral positioning component and an inner peripheral positioning component. The outer peripheral positioning component is provided with a mounting rod that moves, rotates, and is connected to the positioning gear, so that the positioning gear and the hollow gear are engaged. This meshing relationship, on the one hand, realizes the positioning of the outer periphery of the hollow gear to ensure that the hollow gear is stable during the test, and on the other hand, it drives the hollow gear to rotate to achieve the position adjustment of the hollow gear during calibration. The outer peripheral positioning component is provided with multiple groups of inner peripheral positioning plates that slide in and out of the opening synchronously, and then fit the inner wall of the hollow gear to position its inner periphery. Therefore, the hollow gear can be synchronously positioned inside and outside, and the positioning is stable while the rotation of the hollow gear can be flexibly adjusted. While the hollow gear rotates, it cooperates with the balance correction component, which drives the laser drill to move to the position opposite to the unbalanced position on the hollow gear. The laser drill is used to drill holes to reduce weight for balance correction. Therefore, the balance can be corrected and verified in time during the balance test, making the test content rich, the function compact, and the operation efficient.

[0003] Although the above-mentioned existing technical solution can achieve the effect of positioning and installing the hollow gear to be tested through the cooperation of the outer peripheral positioning component and the inner peripheral positioning component, the inner peripheral positioning component is installed on the side wall of the inner peripheral positioning cylinder, and the clamping range is small, which is difficult to adapt to the positioning and installation of hollow gears with larger inner diameters. In addition, there are many types of hollow gears (such as external spur gears, internal spur gears, bevel gears, herringbone gears, etc.), and the outer peripheral positioning component is difficult to adapt to the clamping and positioning work of different types of gears through the detachable and replaceable positioning gears, and thus has poor versatility when testing the dynamic balance of hollow gears. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a positioning device for dynamic balancing test of hollow gears, which can effectively solve the problem in the prior art that it is difficult to adapt to dynamic balancing test work of different types of hollow gears.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a positioning device for hollow gear dynamic balance testing, comprising: Test shaft, used to drive the gear to be tested to rotate for dynamic balancing test; A positioning plate, fixedly arranged at one end of the test shaft, and used to position the gear to be tested; A movable plate is slidably arranged on a side of the positioning plate away from the gear to be tested, and the movable plate is driven by an external force to approach the outer side of the gear to be tested and is coaxially matched with the test shaft; Among them, several clamping blocks are slidingly arranged on the outside of the positioning plate, the inner peripheral clamping part is configured on the side where the clamping blocks are close to each other, and the outer peripheral clamping part is configured on the side where the clamping blocks are away from each other; a clamping block is slidingly arranged on the side of the clamping block away from the positioning plate, and a clamping surface is provided on the side of the clamping block close to the clamping block corresponding to the inner peripheral clamping part and the outer peripheral clamping part.

[0006] Furthermore, it also includes: A radial fixing assembly is provided on a side of the positioning plate away from the gear to be measured; Wherein, the radial fixing assembly includes: The driving member is a screw, which is rotatably arranged on one side of the positioning plate; A plurality of first sliding blocks are provided corresponding to the clamping blocks, and the first sliding blocks are threadedly provided on the outer sides of the corresponding driving members.

[0007] Furthermore, the radial fixing assembly further includes: The driven bevel gear is fixedly arranged on the side where the driving members are close to each other; The driving bevel gear is engaged with the plurality of driven bevel gears, so that when the driving bevel gear rotates, the plurality of driving members can be driven to rotate, so that the plurality of first sliding blocks slide synchronously.

[0008] Furthermore, it also includes an axial fixing assembly; Wherein, the axial fixing assembly includes: The connecting cylinder is arranged on a side of the positioning plate away from the gear to be measured; A guide frame connected to the outer side of the connecting tube, and a plurality of guide frames are provided corresponding to the clamping blocks; The second sliding blocks are slidably arranged on the corresponding guide frames, and the second sliding blocks are connected to the corresponding pressing blocks through the sliding plates.

[0009] Furthermore, a ring is fixedly provided on one end of the test shaft, and the other end is connected to the power equipment; The other end of the ring is fixed with a stud; The axial fixing assembly further comprises a movable nut rotatably arranged at one end of the connecting cylinder, and the movable nut thread is arranged on the outside of the stud.

[0010] Furthermore, a conical positioning column is fixedly provided on the outer side of the test shaft; A base is fixedly provided at the bottom of the movable plate, the base is slidably provided on the bottom plate, and the bottom plate is slidably provided on the fixed plate; One side of the bottom plate is connected with a positioning sleeve through a vertical plate, and the positioning sleeve is adapted to the conical positioning column.

[0011] Furthermore, it also includes: The balance correction component includes a laser puncher, a first driving disk and a second driving disk. The first driving disk is rotatably arranged on the movable plate, and the second driving disk is rotatably arranged on one side of the axis of the first driving disk. The laser puncher is eccentrically arranged on one side of the second driving disk. In the working state, the second driving disk rotates a first angle, and then the first driving disk rotates a second angle, so that the laser puncher aligns with the correction position to punch.

[0012] Furthermore, a sealing tube is disposed on one side of the second driving disk, and the laser puncher is disposed in the sealing tube.

[0013] Furthermore, a gas nozzle is provided in the sealing tube; A driving shaft is coaxially fixedly provided on a side of the second driving disk away from the gear to be tested, and a baffle is fixedly provided on one side of the driving shaft; The first driving disk is provided with a through hole for accommodating the second driving disk, and the baffle is rotatably arranged in the through hole.

[0014] Furthermore, the movable plate is provided with a rotation hole for accommodating the first driving disk; A discharge hole is provided at the bottom of the rotating hole, and an inner channel is provided around the through hole on the inner side of the first driving disk.

[0015] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: (1) The present invention positions and clamps the gear to be measured by providing a clamping block that slides along a slide groove. The clamping range is wider to accommodate positioning work of large-sized gears to be measured, and the inner circumference clamping portion or the outer circumference clamping portion on the outer side of the clamping block respectively concentrically clamps the inner circumference and outer circumference of the gear to be measured, so as to accommodate positioning work of gears to be measured with internal teeth or external teeth.

[0016] (2) The present invention provides a sliding plate on the inner side of the clamping block so that the sliding plate moves together with the clamping block at the end thereof under the drive of the clamping block, so that the relative positions of the clamping block, the inner clamping portion and the outer clamping portion remain unchanged. After the clamping block clamps the gear to be tested, the sliding plate is pulled to axially press the gear to be tested, thereby ensuring the stability of the gear to be tested during the rotation test and not being affected by the type of teeth on the inner or outer side of the gear to be tested, thereby improving the versatility of testing different types of gears to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0018] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of the bottom portion of an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a positioning disk and a test shaft according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the positioning disk and the test shaft according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a movable plate according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the balance correction assembly according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a second driving plate according to an embodiment of the present invention; Figure 8 Schematic diagram of the cross-sectional structure of the first driving disk according to an embodiment of the present invention; Figure 9 Schematic diagram of positioning of the laser punch and the unbalance point of the gear to be measured according to an embodiment of the present invention.

[0019] The numbers in the figure represent: 100, the gear to be tested; 1. Test shaft; 11. Ring; 12. Connecting shaft; 13. Screw; 14. Flange; 15. Fixed nut; 16. Conical positioning column; 2. Positioning plate; 21. Slide; 22. Clamping block; 221. Inner clamping portion; 222. Outer clamping portion; 23. Slide plate; 24. Pressing block; 241. Pressing surface; 25. Gear box; 3. Moving plate; 31. Base; 32. Bottom plate; 33. Fixed plate; 34. Vertical plate; 35. Positioning sleeve; 36. Slide rail; 37. Slide sleeve; 38. First linear mechanism; 39. Second linear mechanism; 310. Rotation hole; 311. Discharge hole; 4. Balance correction assembly; 41. First driving plate; 42. Through hole; 43. Second driving plate; 431. Conical surface; 44. Sealing tube; 45. Laser punch; 46. Air nozzle; 47. Drive shaft; 48. Connecting plate; 49. Baffle; 410. First power member; 411. Motor base; 412. Inner channel; 413. Gear ring; 414. Driving gear; 415. Second power member; 5. Radial fixing assembly; 51. Screw; 52. First slider; 53. Driven bevel gear; 54. Worm gear; 55. Worm; 56. Rotating rod; 6. Axial fixing assembly; 61. Connecting tube; 62. Guide frame; 63. Second slider; 64. Moving nut. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] See also Figures 1-9 The present invention provides a technical solution: a positioning device for dynamic balancing test of hollow gears, comprising a test shaft 1, a positioning disk 2 and a movable plate 3, wherein the test shaft 1 is used to drive the gear 100 to be tested to rotate for dynamic balancing test; the positioning disk 2 is fixedly arranged at one end of the test shaft 1, and a slide groove 21 is distributed in an annular array on the inner side of the positioning disk 2, and a clamping block 22 is slidingly arranged on the outer side of the positioning disk 2 along the slide groove 21, and the clamping blocks 22 distributed in the annular array are driven by external force to position and clamp the gear 100 to be tested; the movable plate 3 is slidingly arranged on the side of the positioning disk 2 away from the gear 100 to be tested, and is driven by external force to approach the outer side of the gear 100 to be tested, and is coaxially matched with the test shaft 1.

[0023] Among them, the sides of the clamping blocks 22 that are away from each other are each provided with an inner circumference clamping portion 221, which is used to clamp the inner circumference of the gear 100 to be measured, and the sides of the clamping blocks 22 that are close to each other are each provided with an outer circumference clamping portion 222, which is used to clamp the outer circumference of the gear 100 to be measured. A slide 23 is slidably provided on the inner side of the clamping block 22, and a clamping block 24 is fixedly provided on the end of the slide 23. The clamping block 24 is close to the clamping block 22 and is provided with a clamping surface 241 corresponding to the inner circumference clamping portion 221 and the outer circumference clamping portion 222, which is driven by external force to axially press the gear 100 to be measured.

[0024] When positioning and clamping the gear 100 to be measured, the clamping block 22 is first driven by external force to slide along the slide groove 21 to an approximate position, and then the gear 100 to be measured is placed on the outside or between the clamping blocks 22, and one side of the gear 100 to be measured is close to the outside of the positioning plate 2, and then the clamping blocks 22 distributed in the annular array are driven by external force to move closer or farther away synchronously, so that the clamping blocks 22 use the inner peripheral clamping portion 221 or the outer peripheral clamping portion 222 on the outer side to concentrically clamp the inner peripheral side and the outer peripheral side of the gear 100 to be measured, so as to adapt to the positioning work of the gear 100 to be measured with the teeth on the inner peripheral side or the outer peripheral side; at this time, the pressing block 24 is located on the gear to be measured. 100 is away from one side of the positioning disk 2, and then the slide plate 23 on the inner side of the clamping block 22 is driven by external force to slide, so that the slide plate 23 pulls the clamping block 24 to press on the corners of the gear 100 to be measured, so that the clamping block 24 cooperates with the inner clamping portion 221 or the outer clamping portion 222 through the clamping surface 241 to axially press the gear 100 to be measured, so as to ensure the stability of the gear 100 to be measured during the test, and will not be affected by the type of teeth on the inner or outer side of the gear 100 to be measured. At the same time, the clamping block 22 that slides and adjusts along the slide groove 21 increases the clamping range of the gear 100 to be measured to adapt to the positioning and clamping of the gear 100 to be measured with a larger diameter.

[0025] The positioning device for dynamic balancing test of hollow gears disclosed in the embodiment of the present application also includes a radial fixing component 5, which is arranged on the side of the positioning plate 2 away from the gear 100 to be tested; the radial fixing component 5 includes a screw 51, which is rotatably arranged on the outside of the positioning plate 2 corresponding to the slide groove 21, and the outside of the screw 51 is threadedly connected to a first slider 52, which is slidably arranged on the inside of the slide groove 21, and the first slider 52 is fixedly connected to the clamping block 22, and each screw 51 is driven by external force to rotate synchronously.

[0026] The positioning device for dynamic balancing test of hollow gears also includes an axial fixing assembly 6 arranged on the outside of the radial fixing assembly 5; the axial fixing assembly 6 includes a connecting tube 61, and a guide frame 62 is fixedly provided on the outside of the connecting tube 61 corresponding to the slide groove 21, and a second slider 63 is slidably provided on the inside of the guide frame 62, and the second slider 63 is fixedly connected to the corresponding slide 23. The connecting tube 61 is driven by external force and fixedly connected to the test shaft 1.

[0027] Among them, a circular ring 11 is fixedly provided at one end of the test shaft 1, and the other end is connected to the power equipment, a stud 13 is fixedly provided at the other end of the circular ring 11, and the stud 13 is fixedly connected to the gear box 25 through a flange 14; the radial fixing assembly 5 also includes a worm 55 rotatably arranged inside the circular ring 11, and a worm gear 54 is meshed with the outside of the worm 55, and the worm gear 54 is coaxially rotated inside the stud 13, and an active bevel gear for driving the driven bevel gear 53 to rotate is fixedly provided at the other end of the worm gear 54, and a rotating rod 56 is fixedly provided on the inside of the worm 55; the axial fixing assembly 6 also includes a moving nut 64 rotatably provided at one end of the connecting tube 61, and the moving nut 64 is threadedly provided on the outside of the stud 13, and a fixed nut 15 is fixedly provided at the end of the stud 13 away from the flange 14.

[0028] In the above technical solution, when the driving clamping block 22 is clamped to the gear 100 to be tested, the worm 55 is rotated by the rotating rod 56, so that the worm 55 drives the worm wheel 54 to rotate inside the ring 11, and the worm wheel 54 drives the active bevel gear on the outside of the flange 14 to rotate, so that the active bevel gear synchronously drives multiple driven bevel gears 53 to rotate inside the gear box 25, and the driven bevel gears 53 drive multiple screws 51 to rotate, so that the screws 51 drive the first slider 52 to slide along the slide groove 21, and then drive the clamping block 22 to slide, through the self-locking between the worm wheel 54 and the worm 55 The performance ensures the stability of the screw 51 during the rotation test; by rotating the movable nut 64 to feed and move outside the stud 13, the movable nut 64 drives the connecting tube 61 to move outside the stud 13, and the connecting tube 61 drives the slide 23 to slide inside the clamping block 22 through the guide frame 62, so that the guide frame 62 pulls the clamping block 24 through the slide 23 to axially press the gear 100 to be tested. When rotating the movable nut 64, the fixed nut 15 and the movable nut 64 can be fixed and rotated respectively by using the handle to prevent the test shaft 1 from rotating when the movable nut 64 is rotated.

[0029] The positioning device for dynamic balancing test of hollow gears in the example of the present application also includes a movable plate 3, which is slidingly arranged on the side of the gear to be tested 100 away from the positioning plate 2. The movable plate 3 is driven by an external force to approach the gear to be tested 100 and is coaxially matched with the test shaft 1. A balance correction component 4 is provided on the inner side of the movable plate 3 for correcting the imbalance of the gear to be tested 100.

[0030] A conical positioning column 16 is fixedly provided on the outside of the test shaft 1. Specifically, the test shaft 1 is fixedly connected to the connecting shaft 12 through a circular ring 11, and a conical positioning column 16 is fixedly provided on the outside of the connecting shaft 12. The circular ring 11 is fixedly connected to the stud 13 through the connecting shaft 12; a base 31 is fixedly provided at the bottom of the movable plate 3, a bottom plate 32 is slidably provided at the bottom of the base 31, a fixed plate 33 is slidably provided at the bottom of the bottom plate 32, a vertical plate 34 is fixedly provided on one side of the bottom plate 32, and a positioning sleeve 35 is fixedly provided on the inner side of the vertical plate 34, and the positioning sleeve 35 cooperates with the conical positioning column 16; specifically, a sliding sleeve 37 is fixedly provided on the bottom of the base 31 and the bottom of the bottom plate 32, and a sliding rail 36 is fixedly provided on the top of the bottom plate 32 and the fixed plate 33. The sliding sleeve 37 is slidably installed on the outside of the sliding rail 36, and a first linear mechanism 38 for driving the bottom plate 32 to slide is fixedly provided on the top of the fixed plate 33, and a second linear mechanism 39 for driving the base 31 to slide is fixedly provided on the top of the bottom plate 32.

[0031] The first linear mechanism 38 in the above technical solution is used to drive the base plate 32 to slide, and the second linear mechanism 39 is used to drive the base 31 to slide. Therefore, in actual work, the first linear mechanism 38 and the second linear mechanism 39 are selected from power parts with linear output functions, such as electric push rods, pneumatic push rods, linear guides or hydraulic push rods.

[0032] After the test shaft 1 tests the gear 100 to be tested, the imbalance amount and phase angle, as well as the distance between the imbalance position and the center of the circle can be obtained. At this time, the base plate 32 can be driven to slide by the first linear mechanism 38, so that the base plate 32 pushes the positioning sleeve 35 on the inner side of the vertical plate 34 to fit together with the conical positioning column 16 on the outer side of the test shaft 1, and then the positioning sleeve 35 and the test shaft 1 are coaxially positioned. At this time, the base plate 32 drives the balance correction component 4 on the inner side of the movable plate 3 to be coaxially positioned with the test shaft 1 and the gear 100 to be tested, preparing for the subsequent imbalance correction work. When correcting, it is only necessary to drive the base 31 to slide toward the gear 100 to be tested on the top of the base plate 32 through the second linear mechanism 39. The balance correction component 4 can pre-adjust the position of the working end according to the test results of the test shaft 1, and can automatically correct the gear 100 to be tested when it fits with the gear 100 to be tested.

[0033] A rotating hole 310 is provided on the inner side of the movable plate 3; the balancing correction component 4 includes a first driving disk 41 rotatably arranged on the inner side of the rotating hole 310, a through hole 42 is provided on the inner side of the first driving disk 41, and the through hole 42 is located on the radius of the first driving disk 41. A second driving disk 43 is rotatably provided on the inner side of the through hole 42, and a sealing tube 44 is fixedly provided on the side of the second driving disk 43 close to the gear to be measured 100, and the sealing tube 44 is aligned with the correction position of the gear to be measured 100; wherein, a laser puncher 45 and an air nozzle 46 are provided on the inner side of the sealing tube 44, and the first driving disk 41 is driven to rotate by an external force for The sealing tube 44 is adjusted to be aligned with the unbalanced phase angle, and the second driving disk 43 is driven to rotate by an external force to adjust the sealing tube 44 to be aligned with the unbalanced correction position; specifically, a gear ring 413 is fixedly provided on the outside of the first driving disk 41, and a driving gear 414 is meshedly provided on the outside of the gear ring 413, and the driving gear 414 is fixedly provided at the output end of the second power member 415, and the second power member 415 is fixedly provided on the outside of the movable plate 3; the other end of the drive shaft 47 is fixedly provided at the output end of the first power member 410, and the first power member 410 is fixedly provided on the outside of the first driving disk 41 through the motor base 411.

[0034] When the movable plate 3 drives the balancing correction assembly 4 to approach the gear 100 to be measured, the sealing tube 44 located on the outer side of the second driving plate 43 first fits against the gear 100 to be measured and is pre-adjusted to the correction position. Then, the laser punch 45 and the air nozzle 46 inside the sealing tube 44 respectively punch holes in the gear 100 to be measured and blow away the waste residue, thereby achieving the effect of correcting the imbalance of the gear 100 to be measured and preventing the waste residue from contaminating the gear 100 to be measured. The specific principle of pre-adjusting the sealing tube 44 is as follows: Figure 9 The center of the first driving plate is O1, and the center of the second driving plate is O2. According to the test results of the test shaft 1, the position point M of the unbalance of the gear 100 to be tested can be obtained. According to the position of point M, the radius of the circle on which point M is located can be analyzed to be R, and the phase angle is A. Since the center distance L between the second driving plate 43 and the first driving plate 41 is a constant value, and the radius length r of the sealing tube 44 is also a constant value, if the sealing tube 44 is a circle with the shape of O1 and the radius length R, the degree of C can be determined according to trigonometric functions, and then the first power member 410 drives the second driving plate 43 to rotate at an angle C (first angle) and stop. At this time, the degree of angle B can be further derived. The angle AB (second angle) that the first driving plate 41 needs to rotate is then caused to be driven by the second power member 415 to rotate the first driving plate 41 by a certain angle, thereby automatically aligning the sealing tube 44 with the correction position on the outside of the gear 100 to be tested, thereby achieving the effect of automatically correcting the gear 100 to be tested after the dynamic balancing test.

[0035] A drive shaft 47 is coaxially fixedly provided on the side of the second driving disk 43 away from the gear 100 to be tested, and a connecting plate 48 for supporting the laser puncher 45 and the air nozzle 46 is fixedly provided on the outer side of the drive shaft 47. A baffle plate 49 is also fixedly provided on the outer side of the drive shaft 47, and the baffle plate 49 is rotatably provided on the inner side of the through hole 42.

[0036] By fixing a baffle 49 on the outside of the drive shaft 47, a closed space is formed on the inside of the through hole 42 under the action of the second driving plate 43 and the baffle 49, preventing the air nozzle 46 from diffusing dust impurities generated by the laser punch 45 into the surrounding environment when blowing, and even causing pollution to the gear 100 to be tested, making it more environmentally friendly to use.

[0037] A discharge hole 311 is defined at the bottom of the rotating hole 310 , and an inner channel 412 is defined in a circular array around the through holes 42 on the inner side of the first driving plate 41 .

[0038] In order to facilitate the collection and cleaning of the dust generated by the blowing, when the blown dust enters between the second driving plate 43 and the baffle plate 49, it will eventually settle down to the inner side of the through hole 42. When the first driving plate 41 rotates, it drives the internal inner channel 412 and the top of the discharge hole 311. The dust inside the through hole 42 can be discharged downward through the inner channel 412, achieving the effect of automatic cleaning.

[0039] A tapered surface 431 is formed on the inner side of the second driving plate 43 corresponding to the sealing tube 44 .

[0040] The conical surface 431 facilitates the wind force generated by the air nozzle 46 to guide the dust to the outside of the sealing tube 44, that is, into the inside of the through hole 42, to prevent the dust from accumulating inside the sealing tube 44 and contaminating the gear 100 to be measured when it moves away.

[0041] Principle and advantages of positioning device for hollow gear dynamic balance test: First, when positioning and clamping the gear 100 to be measured, the worm 55 is rotated by the rotating rod 56, so that the worm 55 drives the worm wheel 54 to rotate inside the ring 11, and the worm wheel 54 drives the active bevel gear on the outside of the flange 14 to rotate, so that the active bevel gear synchronously drives multiple driven bevel gears 53 to rotate inside the gear box 25, and the driven bevel gear 53 drives multiple screws 51 to rotate, so that the screw 51 drives the first slider 52 to slide along the slide groove 21, and then drives the clamping block 22 to slide to an approximate position, and then the gear 100 to be measured is placed on the outside or between the clamping blocks 22, and one side of the gear 100 to be measured is close to the outside of the positioning plate 2, and then the clamping blocks 22 distributed in the annular array are driven to approach or move away synchronously, so that the clamping blocks 22 use the outer inner peripheral clamping part 221 or the outer peripheral clamping part 222 to respectively clamp the gear to be measured. The inner and outer circumferences of the gear 100 are concentrically clamped to adapt to the positioning of the gear 100 to be tested with the teeth on the inner or outer circumference; at this time, the gear 100 to be tested is close to the outer side of the positioning plate 2, and the pressing block 24 is located on the side of the gear 100 to be tested away from the positioning plate 2, and then the movable nut 64 is rotated to feed and move on the outside of the stud 13, so that the movable nut 64 drives the connecting tube 61 to move on the outside of the stud 13, so that the connecting tube 61 drives the slide 23 to slide on the inside of the clamping block 22 through the guide frame 62, so that the guide frame 62 pulls the pressing block 24 through the slide 23 to press on the corners of the gear 100 to be tested, so that the pressing block 24 cooperates with the inner clamping portion 221 or the outer clamping portion 222 through the pressing surface 241 to axially press the gear 100 to be tested, so as to ensure the stability of the gear 100 to be tested during the test process.

[0042] The advantages of the present invention are that the clamping block 22 that slides along the slide groove 21 is provided to position and clamp the gear 100 to be measured, and the clamping range is wider to adapt to the positioning work of the gear 100 to be measured with a large size, and the inner peripheral clamping portion 221 or the outer peripheral clamping portion 222 on the outer side of the clamping block 22 is used to concentrically clamp the inner peripheral side and the outer peripheral side of the gear 100 to be measured, so as to adapt to the positioning work of the gear 100 to be measured with internal teeth or external teeth; the slide plate 23 is provided on the inner side of the clamping block 22 so that the slide plate 23 can be positioned on the clamping block 22. Driven by the gear 22, it moves together with the clamping block 24 at the end, so that the relative positions of the clamping block 24, the inner clamping portion 221 and the outer clamping portion 222 remain unchanged. After the clamping block 22 clamps the gear 100 to be tested, the clamping block 24 is axially pressed on the gear 100 to be tested by pulling the slide plate 23, so as to ensure the stability of the gear 100 to be tested during the rotation test, and will not be affected by the type of teeth on the inner or outer side of the gear 100 to be tested, thereby improving the versatility of testing different types of gears 100 to be tested.

[0043] When the sealing tube 44 in the positioning device for dynamic balancing test of hollow gears of the present application performs dynamic balancing correction on the gear 100 to be tested, the first linear mechanism 38 is used to first drive the bottom plate 32 to slide, so that the bottom plate 32 pushes the positioning sleeve 35 on the inner side of the vertical plate 34 to fit with the tapered positioning column 16 on the outer side of the test shaft 1, thereby coaxially positioning the positioning sleeve 35 and the test shaft 1. At this time, the bottom plate 32 drives the balancing correction component 4 on the inner side of the movable plate 3 to coaxially position with the test shaft 1 and the gear 100 to be tested, thus preparing for the subsequent imbalance correction work; At this time, the unbalance amount and phase angle, as well as the distance between the unbalance position and the center of the circle, can be obtained according to the test structure of the test shaft 1 on the gear to be tested 100. This process is a prior art and will not be described in detail here. Figure 9 , the balance correction component 4 can pre-adjust the position of the sealing tube 44 according to the test results of the test shaft 1. During adjustment, the position point M of the imbalance amount of the gear 100 to be tested can be known according to the test results of the test shaft 1. According to the position of point M, it can be analyzed that the radius of the circle where point M is located is R, and the phase angle is A; since the center distance L between the second driving plate 43 and the first driving plate 41 is a constant value, and the radius length r where the sealing tube 44 is located is also a constant value, if the sealing tube 44 is made to be a circle with O1 and the radius length is R, the degree of C can be obtained according to the trigonometric function, and then the first power member 410 drives the second driving plate 43 to rotate the angle C to stop running. At this time, the degree of angle B can be further deduced, and the angle value AB that the first driving plate 41 needs to rotate is, and then the second power member 415 drives the first driving plate 41 to rotate a certain angle, so that the sealing tube 44 can be automatically aligned with the correction position outside the gear 100 to be tested; The second linear mechanism 39 then drives the base 31 to slide on top of the bottom plate 32 toward the gear 100 to be tested, aligning the sealing tube 44 with the calibration position of the gear 100 to be tested and isolating the calibration position. The laser punch 45 and air nozzle 46 inside the sealing tube 44 then respectively punch holes in the gear 100 to be tested and blow away waste residue, thereby reducing the weight of the unbalanced position to achieve adjustment and correction of the imbalance. The purged waste dust will enter the through hole 42 and its inner side into the closed space formed by the second driving disk 43 and the baffle 49 through the conical surface 431. When the purged dust enters between the second driving disk 43 and the baffle 49, it will eventually settle down to the inner side of the through hole 42. When the first driving disk 41 rotates, it drives the internal inner channel 412 and the top of the discharge hole 311. The dust inside the through hole 42 can be discharged downward through the inner channel 412, thereby achieving the effect of automatic cleaning.

[0044] It is worth mentioning that the above positioning correction method has the following advantages: Advantage 1: By rotating the first driving disk 41 and the second driving disk 43 rotating inside the first driving disk 41, the two can cooperate with each other to realize the automatic adjustment function of the position of the sealing tube 44, and at the same time form a sealed isolation structure on the outside of the gear to be tested 100 to prevent impurities such as waste residue and dust generated inside the sealing tube 44 from adhering to the outside of the gear to be tested 100 and causing pollution.

[0045] The second advantage is that a baffle 49 is rotatably provided on the inner side of the through hole 42 so that the baffle 49 isolates the other end of the through hole 42, thereby forming a sealed space inside the through hole 42, preventing the waste generated by the laser punch 45 and the air nozzle 46 during operation from diffusing into the surrounding environment, further protecting the gear 100 to be tested and the surrounding environment, and making it more environmentally friendly to use.

[0046] Advantage three: by opening an inner channel 412 around the second driving disk 43 on the inner side of the first driving disk 41, impurities and dust accumulated inside the through hole 42 can be automatically cleaned during the rotation of the first driving disk 41, thereby improving the convenience of use.

[0047] Advantage four: by setting the movable plate 3 to move horizontally, the positioning sleeve 35 is driven to approach and fit the conical positioning column 16 outside the test shaft 1, so as to facilitate coaxial positioning of the balance correction component 4, the test shaft 1 and the gear to be tested 100 before correction, so as to ensure the accuracy of the correction position of the sealing tube 44, and during the detection process, the positioning sleeve 35 is separated from the conical positioning column 16, which can prevent the vibration generated during the test from being transmitted to the movable plate 3 and the balance correction component 4.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Positioning device for hollow gear dynamic balance test, characterized in that: include: Test shaft, used to drive the gear to be tested to rotate for dynamic balancing test; A positioning plate, fixedly arranged at one end of the test shaft, and used to position the gear to be tested; A movable plate is slidably arranged on a side of the positioning plate away from the gear to be tested, and the movable plate is driven by an external force to approach the outer side of the gear to be tested and is coaxially matched with the test shaft; Among them, several clamping blocks are slidingly arranged on the outside of the positioning plate, the inner peripheral clamping part is configured on the side where the clamping blocks are close to each other, and the outer peripheral clamping part is configured on the side where the clamping blocks are away from each other; a clamping block is slidingly arranged on the side of the clamping block away from the positioning plate, and a clamping surface is provided on the side of the clamping block close to the clamping block corresponding to the inner peripheral clamping part and the outer peripheral clamping part.

2. The positioning device for hollow gear dynamic balance test according to claim 1, characterized in that: Also includes: A radial fixing assembly is provided on a side of the positioning plate away from the gear to be measured; Wherein, the radial fixing assembly includes: The driving member is a screw, which is rotatably arranged on one side of the positioning plate; A plurality of first sliding blocks are provided corresponding to the clamping blocks, and the first sliding blocks are threadedly provided on the outer sides of the corresponding driving members.

3. The positioning device for hollow gear dynamic balance test according to claim 2, characterized in that: The radial fixing assembly further comprises: The driven bevel gear is fixedly arranged on the side where the driving members are close to each other; The driving bevel gear is engaged with the plurality of driven bevel gears, so that when the driving bevel gear rotates, the plurality of driving members can be driven to rotate, so that the plurality of first sliding blocks slide synchronously.

4. The positioning device for hollow gear dynamic balance test according to claim 1, characterized in that: Also included is an axial fixation assembly; Wherein, the axial fixing assembly includes: The connecting cylinder is arranged on a side of the positioning plate away from the gear to be measured; A guide frame connected to the outer side of the connecting tube, and a plurality of guide frames are provided corresponding to the clamping blocks; The second sliding blocks are slidably arranged on the corresponding guide frames, and the second sliding blocks are connected to the corresponding pressing blocks through the sliding plates.

5. The positioning device for hollow gear dynamic balance test according to claim 4, characterized in that: A ring is fixedly provided at one end of the test shaft, and the other end is connected to the power equipment; The other end of the ring is fixed with a stud; The axial fixing assembly further comprises a movable nut rotatably arranged at one end of the connecting cylinder, and the movable nut thread is arranged on the outside of the stud.

6. The positioning device for hollow gear dynamic balance test according to claim 1, characterized in that: A conical positioning column is fixedly provided on the outer side of the test shaft; A base is fixedly provided at the bottom of the movable plate, the base is slidably provided on the bottom plate, and the bottom plate is slidably provided on the fixed plate; One side of the bottom plate is connected with a positioning sleeve through a vertical plate, and the positioning sleeve is adapted to the conical positioning column.

7. The positioning device for hollow gear balancing test according to claim 1, characterized in that: Also includes: The balance correction component includes a laser puncher, a first driving disk and a second driving disk. The first driving disk is rotatably arranged on the movable plate, and the second driving disk is rotatably arranged on one side of the axis of the first driving disk. The laser puncher is eccentrically arranged on one side of the second driving disk. In the working state, the second driving disk rotates a first angle, and then the first driving disk rotates a second angle, so that the laser puncher aligns with the correction position to punch.

8. The positioning device for hollow gear balancing test according to claim 7, characterized in that: A sealing tube is disposed on one side of the second driving disk, and the laser puncher is disposed in the sealing tube.

9. The positioning device for hollow gear balancing test according to claim 8, characterized in that: The sealing tube is further provided with an air nozzle; A driving shaft is coaxially fixedly provided on a side of the second driving disk away from the gear to be tested, and a baffle is fixedly provided on one side of the driving shaft; The first driving disk is provided with a through hole for accommodating the second driving disk, and the baffle is rotatably arranged in the through hole.

10. The positioning device for hollow gear balancing test according to claim 9, characterized in that: The movable plate is provided with a rotation hole for accommodating the first driving disk; A discharge hole is provided at the bottom of the rotating hole, and an inner channel is provided around the through hole on the inner side of the first driving disk.

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