Intelligent size measuring device and method based on gear machining

Abstract

The invention relates to the technical field of size measurement, and particularly discloses an intelligent size measurement device and method based on gear machining, and the device comprises a machining center, the right side of the interior of the machining center is provided with a measurement seat, the top of the middle of the measurement seat is provided with a to-be-measured gear, and the interior of the measurement seat is provided with a clamping assembly for clamping the to-be-measured gear. The measuring device further comprises a detection assembly which is arranged on the inner side of the to-be-measured gear, the detection assembly comprises a first motor which rotates in the middle of the interior of the measuring base, through the effect of the structure, the measuring position can be adjusted according to the size of a tooth groove, and the measuring accuracy is improved for internal gears of different sizes. The cross-rod distance measuring device can avoid the problem that the measuring position is in contact with the root area of the tooth groove of the internal gear due to the fact that the size of the portion used for measuring is small, thereby guaranteeing the precision of cross-rod distance measurement, also can avoid the problem that the measuring position cannot enter the tooth groove due to the fact that the size of the portion used for measuring is large, and avoids the influence on the detection precision.

Description

Technical Field

[0001] This invention relates to the field of dimensional measurement technology, and in particular to an intelligent dimensional measurement device and method based on gear machining. Background Technology

[0002] A gear is a mechanical component that transmits motion and power through continuous meshing of gears on its rim. Industrial machine tools, including metal cutting machine tools, are commonly used to process gears. After gear production, to ensure the quality of the produced gears, it is necessary to measure their dimensions. When measuring the dimensions of gears, it is necessary not only to measure the diameters of the addendum circle and dedendum circle, but also to measure the tooth thickness. The accuracy of tooth thickness measurement is an important factor in ensuring smooth gear meshing.

[0003] Large-sized internal gears are among the most common types of gears. Due to their unique structure, measuring the tooth thickness of internal gears presents unique challenges. Measuring the span distance has become the most practical and reliable solution. For example, the "Internal Tooth Span Measuring Device" published in CN119289830A uses a probe aligned with the tooth groove of the inner ring of an internal gear ring. A slider on the linear slide rail on that side drives the support column and the probe closer to the internal gear ring, so that the end of the probe contacts the middle of the tooth groove of the internal gear ring, thereby measuring the internal tooth span of the internal gear ring.

[0004] However, in the actual process of measuring the span of the gauge bar, it is necessary to ensure that the gauge bar can smoothly enter the tooth groove of the gear, and it is also necessary to ensure that the gauge bar does not touch the root area of ​​the tooth groove of the internal gear. Therefore, when measuring the span of the gauge bar for gears with different tooth thicknesses, gauge bars of different diameters need to be used to ensure the accuracy of the measurement. Existing gauge bars are difficult to adaptively adjust according to tooth thickness. If the method of disassembly and replacement is adopted, the efficiency of the measurement will be greatly affected. The inability of the gauge bar to adaptively adjust according to tooth thickness will result in the inability to cope with gears of different sizes, thus affecting the measurement accuracy of the gear. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent dimension measuring device based on gear machining, which can adjust the measurement position according to the size of the tooth groove. For internal gears of different sizes, it can avoid the measurement position from contacting the root area of ​​the tooth groove due to the small size of the part used for measurement, thereby avoiding affecting the accuracy of the span distance measurement. It can also avoid the measurement position from being unable to enter the interior of the tooth groove due to the large size of the part used for measurement, thus avoiding affecting the accuracy of the detection. This solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dimension intelligent measuring device based on gear machining, comprising a machining center, a measuring seat disposed on the right side inside the machining center, a gear to be measured disposed on the top center of the measuring seat, and a clamping assembly for clamping the gear to be measured disposed inside the measuring seat; the measuring device further comprises: The detection assembly is configured inside the gear to be tested. The detection assembly includes a first motor rotating in the middle of the measuring seat. The output shaft of the first motor is fixed to a rotating seat. Measuring tubes are configured on both sides of the rotating seat. A secondary tube slides inside the measuring tube. A slide is slidably mounted on the front and rear ends of the secondary tube. A contact ball is fixedly connected to the outer wall of the slide. A distance sensor is configured at the end of the secondary tube. The detection component is configured inside the gear to be tested. The extrusion component is used to control the movement of the slide in the front-back direction. The extrusion component includes a slide rod that slides inside the sub-tube. The end of the slide rod extends out of the sub-tube. An extrusion frame slides inside the slide rod. The front and rear ends of the extrusion frame and the slide near the extrusion frame are both inclined.

[0007] Preferably, a first rack is fixedly connected to the outer wall of the slide rod, and the extrusion assembly also includes a vertical rod fixed inside the secondary tube. A first gear is rotatably connected to the outer wall of the vertical rod, and the first rack meshes with the first gear. A second gear is rotatably connected to the top of the vertical rod. A second rack is fixedly connected to the front side of the extrusion frame, and the second rack meshes with the second gear. A bracket is fixed inside the secondary tube, and the outer wall of the slide rod is slidably connected to the bracket. The outer side of the bracket is fixedly connected to the inner wall of the secondary tube. A spring is fixedly connected between the bracket and the slide rod. A third motor is fixed inside the measuring tube, and a lead screw is fixed to the output shaft of the third motor. The output shaft of the lead screw is threadedly connected to the secondary tube.

[0008] Preferably, the size of the second gear is larger than the size of the first rack.

[0009] Preferably, the top of the vertical rod is located inside the second gear, a limiting block is fixed to the top of the vertical rod, a ratchet is fixedly connected to the inner side of the second gear, a locking rod is rotatably connected to the ring side of the limiting block, a spring is fixedly connected between the locking rod and the limiting block, and a connecting rod is fixedly connected between the second gear and the first gear.

[0010] Preferably, a first electromagnetic block is fixedly connected inside the limiting block, and the lever is made of iron.

[0011] Preferably, the clamping assembly includes a second motor fixedly connected to the middle position of the bottom of the measuring seat. The output shaft of the second motor is fixed with a main bevel gear, and a secondary bevel gear meshes around the main bevel gear. A screw is fixed to the outer wall of the secondary bevel gear. The screw is rotatably connected to the measuring seat. A clamping frame is threadedly connected to the outer wall of the screw. The outer wall of the clamping frame is slidably connected to the measuring seat.

[0012] Preferably, a cleaning assembly is provided on the inner side of the gear to be tested. The cleaning assembly includes a square tube fixed inside the rotating seat, with round tubes sliding at both the front and rear ends of the square tube. A frame is fixedly inserted at the end of the round tube away from the square tube. Soft bristles are fixed on the side of the frame close to the gear to be tested. The cleaning assembly also includes an electric telescopic rod fixedly connected between the rotating seat and the frame.

[0013] Preferably, a rotary joint is installed on the top of the rotating seat, an air inlet pipe is fixed on the side of the rotary joint, and a small tube is fixedly connected between the square tube and the rotary joint.

[0014] Preferably, the frame has an internal movable iron plate, a bent frame is fixed to the top of the iron plate, a limiting plate is fixed to the end of the bent frame away from the iron plate, and a second electromagnet is fixed to the top of the internal frame.

[0015] A method for intelligent measurement of dimensions in gear machining includes the following steps: S1. Clamping: Place the gear to be tested at the top center of the measuring seat and clamp it using the clamping assembly. S2. Measurement: The gear under test is measured using the detection component.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By cooperating with the detection component and the extrusion component, the measurement position can be adjusted according to the size of the tooth groove. For internal gears of different sizes, it can avoid the problem of the measurement position contacting the root area of ​​the internal gear tooth groove due to the small size of the part used for measurement, thus ensuring the accuracy of the span distance measurement. It can also avoid the problem of the measurement position not being able to enter the tooth groove due to the large size of the part used for measurement, thus avoiding the impact on the accuracy of the detection. 2. By using the ratchet action of the chuck, the distance between the two mating balls is kept constant when a single gear is being tested. This prevents the slide bar from moving when testing each tooth groove, thus preventing spring fatigue caused by frequent extension and contraction, which would affect the elastic force and the service life of the device. It also affects the radius of the tooth root circle when the spring is not compressed in the initial state, and the length of the combined length of the secondary tube and the slide bar, which in turn affects the accuracy of the detection of the tooth tip circle and tooth root circle diameter. 3. The soft bristles clean the gear to be tested. During the cleaning process, air is introduced from the outside into the air intake pipe, which allows the air to enter the rotary joint and the small tube, then the square tube, and then the round tube into the frame. Finally, the air is ejected from the air jet hole opened in the frame. This combination of blowing air and cleaning with soft bristles improves the cleaning effect of debris and dust and avoids iron filings affecting the detection accuracy. 4. The iron plate can divide the interior of the frame. The bottom of the iron plate corresponds to the height of the gear to be tested, blocking the air and allowing the air to be sprayed out from the air jet hole located below the iron plate. This makes it easier for the air to be concentrated and sprayed onto the gear to be tested, improving the cleaning effect on the gear to be tested, and further avoiding the impact of impurities on the accuracy of the test. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall structural view of the present invention; Figure 2 This is a partial structural diagram of the measuring seat of the present invention; Figure 3 This is a top view of the measuring seat structure of the present invention; Figure 4 This is a schematic diagram of a half-section of the measuring seat structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A; Figure 6 This is a schematic diagram of a half-section of the measuring tube of the present invention; Figure 7 This is a partial structural schematic diagram of the secondary tube of the present invention; Figure 8 This is a partial top-section structural diagram of the secondary tube of the present invention; Figure 9 This is a partial structural schematic diagram of the carriage of the present invention; Figure 10 This is a partial structural schematic diagram of the vertical rod of the present invention; Figure 11 This is a partial structural diagram of the limiting block of the present invention; Figure 12 This is a side sectional view of the rotating seat of the present invention; Figure 13 This is a cross-sectional structural diagram of the framework of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Machining center; 2. Measuring base; 3. Gear to be tested; 4. Detection assembly; 41. First motor; 42. Rotating base; 43. Measuring tube; 44. Secondary tube; 45. Slide carriage; 46. Contact ball; 47. Third motor; 48. Lead screw; 49. Distance sensor; 5. Extrusion assembly; 51. Slide rod; 52. Extrusion frame; 53. First rack; 54. First gear; 55. Second gear; 56. Second rack; 57. Bracket; 58. Spring; 59. Limiting block; 510. Ratchet; 511. 512. Clamping lever; 513. Spring; 514. First electromagnetic block; 515. Connecting rod; 516. Vertical rod; 6. Clamping assembly; 61. Second motor; 62. Main bevel gear; 63. Secondary bevel gear; 64. Clamping frame; 65. Screw; 7. Cleaning assembly; 71. Square tube; 72. Round tube; 73. Frame; 74. Soft brush bristles; 75. Electric telescopic rod; 76. Rotary joint; 77. Air inlet pipe; 78. Iron plate; 79. Bending frame; 710. Limiting plate; 711. Second electromagnet; 712. Small tube. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 11 This invention provides a technical solution: an intelligent dimension measuring device based on gear machining, comprising a machining center 1, a measuring seat 2 disposed on the right side inside the machining center 1, a gear 3 to be measured disposed on the top center of the measuring seat 2, a clamping assembly 6 for clamping the gear 3 to be measured disposed inside the measuring seat 2, and a cutting assembly for gear machining production disposed on the left side of the machining center 1. Gear cutting is a mature existing technology and will not be described in detail. After machining, the gear 3 to be measured is clamped and placed on the top center of the measuring seat 2 by the clamping arm disposed inside the machining center 1. The technology of clamping and transporting by the clamping arm is a mature existing technology and will not be described in detail.

[0022] The clamping assembly 6 includes a second motor 61 fixedly connected to the middle position of the bottom of the measuring base 2. The output shaft of the second motor 61 is fixed with a main bevel gear 62. A secondary bevel gear 63 meshes around the main bevel gear 62. A screw 65 is fixed to the outer wall of the secondary bevel gear 63. The screw 65 is rotatably connected to the measuring base 2. A clamping frame 64 is threadedly connected to the outer wall of the screw 65. The outer wall of the clamping frame 64 is slidably connected to the measuring base 2.

[0023] When the gear 3 to be tested needs to be clamped, the output shaft of the second motor 61 is rotated, which causes the main bevel gear 62 to rotate, thereby causing multiple secondary bevel gears 63 to rotate synchronously, and thus causing multiple screws 65 to rotate synchronously. In this way, multiple clamping frames 64 move synchronously to clamp the gear 3 to be tested. Because multiple clamping frames 64 move synchronously, the gear 3 to be tested can be held in the center position of the measuring seat 2 after being clamped, so that the axis of the gear 3 to be tested is aligned with the axis of the second motor 61.

[0024] The measuring device also includes a detection component 4 disposed inside the gear 3 to be measured. The detection component 4 includes a first motor 41 rotating in the middle inside the measuring seat 2. The first motor 41 is a servo motor. The output shaft of the first motor 41 is fixed to a rotating seat 42. Measuring tubes 43 are disposed on both sides of the rotating seat 42. A secondary tube 44 slides inside the measuring tube 43. A slide 45 slides at both the front and rear ends of the secondary tube 44. A contact ball 46 is fixedly connected to the outer wall of the slide 45. A distance sensor 49 is disposed at the end of the secondary tube 44. The measuring device also includes a pressing component 5 disposed inside the secondary tube 44. The pressing component 5 is used to control the slide 45 to move in the front-back direction. The pressing component 5 includes a sliding rod 51 sliding inside the secondary tube 44. The end of the sliding rod 51 extends out of the secondary tube 44. A pressing frame 52 slides inside the sliding rod 51. The front and rear ends of the pressing frame 52 are inclined to the slide 45 near the pressing frame 52. The slide rod 51 is fixedly connected to the outer wall of a first rack 53. The extrusion assembly 5 also includes a vertical rod 515 fixed inside the secondary tube 44. The outer wall of the vertical rod 515 is rotatably connected to a first gear 54. The first rack 53 meshes with the first gear 54. The top of the vertical rod 515 is rotatably connected to a second gear 55. The front side of the extrusion frame 52 is fixedly connected to a second rack 56, which meshes with the second gear 55. The secondary tube 44 is fixedly connected to a bracket 57. The outer wall of the slide rod 51 is slidably connected to the bracket 57. The outer side of the bracket 57 is fixedly connected to the inner wall of the secondary tube 44. A spring 58 is fixedly connected between the bracket 57 and the slide rod 51. The measuring tube 43 is fixedly connected to a third motor 47. The output shaft of the third motor 47 is fixedly connected to a lead screw 48. The output shaft of the lead screw 48 is threadedly connected to the secondary tube 44. A connecting rod 514 is fixedly connected between the second gear 55 and the first gear 54.

[0025] By adopting the above technical solution, when testing is required, the output shaft of the first motor 41 rotates, which facilitates the rotation of the measuring tube 43 by the rotating seat 42, so that the auxiliary tube 44 is aligned with the inside of one of the tooth grooves.

[0026] Subsequently, the output shaft of the third motor 47 drives the lead screw 48 to rotate, which causes the auxiliary tube 44 to move the slide rod 51 towards the tooth groove of the gear 3 to be tested. At this time, the slide rod 51 moves inward into the tooth groove. The end of the slide rod 51 is limited to the root of the tooth groove, which causes relative movement between the slide rod 51 and the auxiliary tube 44. This causes relative movement between the first rack 53 and the first gear 54. Under the action of the meshing of the first rack 53 and the first gear 54, the first gear 54 can rotate. Under the action of the connecting rod 514, the second gear 55 can rotate, and at this time, the angular velocity of the second gear 55 and the first gear 54 is the same.

[0027] It should be noted that, under the elastic force of the spring 58 itself, the slide rod 51 can extend out of the secondary tube 44 in the initial state, and the length of the extension is less than the depth of the tooth groove. This ensures that when the end of the slide rod 51 contacts the root of the inner side of the tooth groove, the contact ball 46 can smoothly enter the interior of the tooth groove.

[0028] When the second gear 55 rotates, the second rack 56 meshes with the second gear 55, causing the second rack 56 to move towards the extrusion frame 52, and causing the extrusion frame 52 to move towards the slide 45. With the front and rear ends of the extrusion frame 52 and the slide 45 near the extrusion frame 52 both inclined, the slide 45 can move with the contact balls 46 towards the front and rear ends, thereby achieving the two contact balls 46 to fit tightly against the inside of the tooth groove. The two contact balls 46 work together to simulate a single measuring rod to detect the span distance.

[0029] It should be noted that when the tooth groove is wide, a larger relative distance is generated between the slide rod 51 and the secondary tube 44, allowing the mating ball 46 to move a greater distance, which facilitates a larger distance between the two mating balls 46 during measurement. When the tooth groove is narrow, the relative distance generated between the slide rod 51 and the secondary tube 44 is smaller, resulting in a smaller distance between the two.

[0030] This allows for adjustment of the measurement position based on the size of the tooth groove. For internal gears of different sizes, it avoids the problem of the measurement position contacting the root area of ​​the internal gear tooth groove due to the small size of the part used for measurement, thus ensuring the accuracy of the span measurement. It also avoids the problem of the measurement position being unable to enter the tooth groove due to the large size of the part used for measurement, thus preventing the accuracy of the test from being affected.

[0031] The axis of the gear 3 under test is aligned with the axis of the first motor 41, and the axis of the first motor 41 is aligned with the axis of the rotating seat 42. The distance sensor 49 can use infrared ranging, which is a mature existing technology and will not be described in detail. During the test, when the two mating balls 46 fit tightly against the inside of the tooth groove, the distance sensor 49 measures the distance between the end of the secondary tube 44 and the inner side of the end of the measuring tube 43. Half of the span distance value is the sum of the distance between the end of the secondary tube 44 and the inner side of the end of the measuring tube 43, the distance between the end of the secondary tube 44 and the mating ball 46, and the distance between the inner side of the end of the measuring tube 43 and the axis of the rotating seat 42.

[0032] By rotating the output shaft of the first motor 41, different tooth grooves can be measured.

[0033] This device can also measure the diameter of the addendum circle and the dedendum circle. When measuring the dedendum circle, the output shaft of the third motor 47 rotates so that the end of the slide rod 51 just contacts the root of the tooth groove. The radius of the dedendum circle can then be calculated. The radius of the dedendum circle is the sum of the length of the auxiliary tube 44 and the slide rod 51 in the initial state when the spring 58 is not compressed, the distance between the end of the auxiliary tube 44 and the inner side of the end of the measuring tube 43, and the distance between the inner side of the end of the measuring tube 43 and the axis of the rotating seat 42. The diameter of the dedendum circle is twice the radius of the dedendum circle.

[0034] Similarly, when measuring the tip circle diameter, the output shaft of the first motor 41 is rotated to align the slide rod 51 with the tip of the tooth and make the end of the slide rod 51 fit against the tip of the tooth, so that the size of the tip circle can be calculated. This allows for a comprehensive measurement of the dimensions of the gear 3 to be tested and a determination of whether the gear 3 is qualified.

[0035] It should be noted that the end of the slide bar 51 is equipped with a contact sensor. When measuring the diameter of the tooth tip circle and tooth root circle, when the slide bar 51 contacts the tooth tip or tooth root, the contact sensor transmits a signal to the peripheral controller to perform the measurement.

[0036] One measuring tube 43 is fixed to the rotating seat 42, and the other measuring tube 43 rotates with the rotating seat 42. A motor is fixed inside the rotating seat 42. When the output shaft of the motor rotates, it can control the measuring tube 43 to rotate. When it is necessary to measure the side bar pitch of an odd-numbered gear, the output shaft of the motor can be rotated to control the measuring tube 43, the auxiliary tube 44, the slide 45, and the contact ball 46 to rotate slightly, so that the contact ball 46 can enter the tooth groove next to the symmetrical position on the other side. This allows not only even-numbered gears to be tested, but also odd-numbered gears to be tested.

[0037] The size of the second gear 55 is larger than the size of the first rack 53.

[0038] By adopting the above technical solution, this design ensures that when the slide bar 51 is limited and moves, the second rack 56 can carry the extrusion frame 52 a greater distance, which allows the contact ball 46 to move a greater distance when the slide bar 51 moves a smaller distance.

[0039] The top of the vertical rod 515 is located inside the second gear 55. A limiting block 59 is fixed to the top of the vertical rod 515. A ratchet 510 is fixedly connected to the inner side of the second gear 55. A locking rod 511 is rotatably connected to the ring side of the limiting block 59. A spring piece 512 is fixedly connected between the locking rod 511 and the limiting block 59. The spring piece 512 has elasticity to ensure that the locking rod 511 is close to the ratchet 510. A first electromagnetic block 513 is fixedly connected inside the limiting block 59. The locking rod 511 is made of iron.

[0040] By adopting the above technical solution, when the slide bar 51 is limited by the first tooth groove and moves with the first rack 53, the first gear 54 and the second gear 55 move in a counterclockwise direction. At this time, the locking rod 511 can rotate along the inclined surface of the ratchet 510, thereby ensuring that the first gear 54 and the second gear 55 can rotate smoothly. When the slide bar 51 moves away from the tooth groove, the first gear 54 and the second gear 55 want to rotate clockwise to reset. At this time, the locking rod 511 is limited by the ratchet 510 at a non-tilted position, thereby ensuring that the first gear 54 and the second gear 55 cannot rotate to reset. At this time, the second rack 56 and the pressing frame 52 keep pressing the slide 45, thereby ensuring that the distance between the two contact balls 46 remains a fixed value.

[0041] This design ensures that the distance between the two mating balls 46 remains constant when testing a single gear 3. This prevents the slide bar 51 from moving when testing each tooth groove, thus preventing the spring 58 from fatigued due to frequent extension and contraction, which would affect its elasticity and the lifespan of the device. It also affects the length of the tooth root circle when the spring 58 is not compressed in its initial state, which is the length of the combined length of the auxiliary tube 44 and the slide bar 51. This, in turn, affects the accuracy of the detection of the tooth tip circle and tooth root circle diameters.

[0042] When it is necessary to measure another gear 3 to be tested, the first electromagnetic block 513 is energized, and the first electromagnetic block 513 attracts the locking rod 511, so that the locking rod 511 is away from the ratchet 510, which makes it easier for the second rack 56 and the pressing frame 52 to reset. It should be noted that there are magnetic blocks fixedly connected at the close points of the two slides 45. At this time, under the magnetic force of the magnetic blocks, the two slides 45 move closer together, so that the contact ball 46 is reset.

[0043] Example 2: The technical solution of this example differs from that of Example 1 in that: Figures 1 to 5 and Figures 12 to 13The inner side of the gear 3 under test is equipped with a cleaning component 7. The cleaning component 7 includes a square tube 71 fixed inside the rotating seat 42. Round tubes 72 slide on both the front and rear ends of the square tube 71. A frame 73 is fixedly inserted into the end of the round tube 72 away from the square tube 71. The round tube 72 is inserted into the frame 73 near the bottom. Soft bristles 74 are fixed on the side of the frame 73 near the gear 3 under test. The cleaning component 7 also includes an electric telescopic rod 75 fixedly connected between the rotating seat 42 and the frame 73. A rotary joint 76 is installed on the top of the rotating seat 42. The principle and installation method of the rotary joint 76 are mature existing technologies and will not be described in detail. An air inlet pipe 77 is fixed on the side of the rotary joint 76. A small tube 712 is fixedly connected between the square tube 71 and the rotary joint 76.

[0044] By adopting the above technical solution, iron filings may be present on the surface of the gear 3 to be tested during the cutting process. In order to avoid the iron filings affecting the detection accuracy, this solution designs a cleaning component 7.

[0045] The square tube 71 is perpendicular to the measuring tube 43. Before testing, the output shaft of the electric telescopic rod 75 extends, allowing the frame 73 to move with the soft brush bristles 74. At this time, the round tube 72 slides inside the square tube 71, allowing the end of the soft brush bristles 74 to reach the root of the tooth groove. Then, the first motor 41 drives the rotating seat 42 to rotate, allowing the soft brush bristles 74 to clean the gear 3 to be tested. During the cleaning process, air is introduced from the outside into the air inlet pipe 77, allowing the air to enter the rotary joint 76 and the small tube 712, then into the square tube 71, and then into the frame 73 through the round tube 72. Finally, the air is ejected from the air jet hole opened in the frame 73. In this way, the soft brush bristles 74 clean while blowing air, improving the cleaning effect of debris and dust and preventing iron filings from affecting the testing accuracy.

[0046] When the first motor 41 rotates the rotating seat 42 more than 90 degrees, cleaning can be carried out at the same time, which improves the efficiency of measurement.

[0047] It should be noted that the top of the measuring seat 2 is fixed with ribs in a ring array, which makes it easier to raise the gear 3 to be tested, so that the blown debris can enter the gap between the ribs and the gear.

[0048] The frame 73 has an internal movable iron plate 78, a bent frame 79 fixed to the top of the iron plate 78, a limiting plate 710 fixed to the end of the bent frame 79 away from the iron plate 78, a second electromagnet 711 fixed to the top of the inside of the frame 73, and the bottom of the iron plate 78 is flush with the bottom of the limiting plate 710.

[0049] By adopting the above technical solution, when the output shaft of the electric telescopic rod 75 extends, allowing the end of the soft brush bristles 74 to reach the root of the tooth groove, the second electromagnet 711 is de-energized, causing the iron plate 78, the bending frame 79, and the limiting plate 710 to move downwards under the gravity of the iron plate 78 until the bottom of the limiting plate 710 is limited by the top of the gear 3 to be tested. At this time, the iron plate 78 divides the interior of the frame 73, and the bottom of the iron plate 78 corresponds to the height of the gear 3 to be tested, blocking the air so that the air is ejected from the air jet hole located below the iron plate 78, which facilitates the concentrated air spray towards the gear 3 to be tested, improving the cleaning effect of the gear 3 to be tested, and further avoiding the impact of impurities on the accuracy of the test.

[0050] It should be noted that the air spray can also clean impurities on the soft brush bristles 74, preventing excessive accumulation of impurities on the soft brush bristles 74 and affecting the cleaning effect.

[0051] A method for intelligent measurement of dimensions in gear machining includes the following steps: S1. Clamping: When it is necessary to clamp the gear 3 to be tested, the output shaft of the second motor 61 is rotated, which causes the main bevel gear 62 to rotate, thereby causing multiple secondary bevel gears 63 to rotate synchronously, and thus causing multiple screws 65 to rotate synchronously. In this way, multiple clamping frames 64 move synchronously to clamp the gear 3 to be tested. Since multiple clamping frames 64 move synchronously, the gear 3 to be tested can be held in the center position of the measuring seat 2 after being clamped, so that the axis of the gear 3 to be tested is aligned with the axis of the second motor 61. S2. Measurement: The output shaft of the first motor 41 rotates, causing the rotating seat 42 to rotate along with the measuring tube 43, thus aligning the secondary tube 44 with the inside of one of the tooth slots. Then, the output shaft of the third motor 47 rotates the lead screw 48, causing the secondary tube 44 to move along with the slide rod 51 towards the tooth slot of the gear 3 being measured. At this time, the slide rod 51 moves towards the inside of the tooth slot, and the limiting position at the root of the inner side of the tooth slot causes relative movement between the slide rod 51 and the secondary tube 44. This, in turn, causes relative movement between the first rack 53 and the first gear 54. Under the meshing action of the first rack 53 and the first gear 54... The first gear 54 can rotate, and under the action of the connecting rod 514, the second gear 55 can rotate. When the second gear 55 rotates, under the action of the second rack 56 meshing with the second gear 55, the second rack 56 can move towards the extrusion frame 52, and the extrusion frame 52 can move towards the slide 45. With the front and rear ends of the extrusion frame 52 and the slide 45 near the extrusion frame 52 both inclined, the slide 45 can move with the fitting balls 46 towards the front and rear ends, so that the two fitting balls 46 fit tightly against the inside of the tooth groove. The two fitting balls 46 work together to simulate a single measuring rod to detect the span distance.

[0052] When the tooth groove width is large, a larger relative distance is generated between the slide rod 51 and the secondary tube 44, allowing the contact ball 46 to move a greater distance. This facilitates a larger distance between the two contact balls 46 during measurement. When the tooth groove width is small, the relative distance generated between the slide rod 51 and the secondary tube 44 is smaller, resulting in a smaller distance between the two balls. This allows the measurement position to be adjusted according to the tooth groove size. For internal gears of different sizes, this avoids the measurement position from contacting the root area of ​​the tooth groove due to the small size of the part used for measurement, thus avoiding affecting the accuracy of the span measurement. It also avoids the measurement position from being unable to enter the interior of the tooth groove due to the large size of the part used for measurement, thus preventing the detection accuracy from being affected.

[0053] When the slide bar 51 is limited by the first tooth groove and moves with the first rack 53, the first gear 54 and the second gear 55 move counterclockwise. At this time, the locking lever 511 can rotate along the inclined surface of the ratchet 510, thus ensuring that the first gear 54 and the second gear 55 can rotate smoothly. When the slide bar 51 moves away from the tooth groove, the first gear 54 and the second gear 55 want to rotate clockwise to reset. At this time, the locking lever 511 is limited by the non-tilted position of the ratchet 510, thus ensuring that the first gear 54 and the second gear 55 cannot rotate to reset. At this time, the second rack 56 and the pressing frame 52 maintain their position relative to the slide bar 4. The compression of 5 ensures that the distance between the two mating balls 46 remains constant. This design allows the distance between the two mating balls 46 to remain constant when testing a single gear 3, thus preventing the slide bar 51 from moving when testing each tooth groove. This prevents the high-frequency extension and contraction of the spring 58 from causing fatigue of the spring 58 and affecting its elasticity, which would affect the service life of the device. It would also affect the length of the tooth root circle when the spring 58 is not compressed in its initial state, which is the length of the combined length of the auxiliary tube 44 and the slide bar 51. This would affect the accuracy of the detection of the tooth tip circle and tooth root circle diameters.

[0054] The output shaft of the electric telescopic rod 75 extends, allowing the frame 73 to move with the soft brush bristles 74. At this time, the round tube 72 slides inside the square tube 71, allowing the end of the soft brush bristles 74 to reach the root of the tooth groove. Then, the first motor 41 drives the rotating seat 42 to rotate, allowing the soft brush bristles 74 to clean the gear 3 to be tested. During the cleaning process, air is introduced from the outside into the air intake pipe 77, allowing the air to enter the rotary joint 76 and the small tube 712, then into the square tube 71, and then into the frame 73 through the round tube 72. Finally, the air is ejected from the air jet hole opened in the frame 73. In this way, the soft brush bristles 74 clean while blowing air, improving the cleaning effect of debris and dust.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dimension intelligent measuring device based on gear machining, comprising a machining center (1), a measuring seat (2) disposed on the right side inside the machining center (1), a gear to be measured (3) disposed on the top center of the measuring seat (2), and a clamping assembly (6) for clamping the gear to be measured (3) disposed inside the measuring seat (2), characterized in that, The measuring device also includes: The detection assembly (4) is located inside the gear (3) to be tested. The detection assembly (4) includes a first motor (41) that rotates in the middle of the measuring seat (2). The output shaft of the first motor (41) is fixed with a rotating seat (42). Measuring tubes (43) are arranged on both sides of the rotating seat (42). A secondary tube (44) slides inside the measuring tube (43). A slide frame (45) slides at both the front and rear ends of the secondary tube (44). A fitting ball (46) is fixedly connected to the outer wall of the slide frame (45). A distance sensor (49) is arranged at the end of the secondary tube (44). The extrusion assembly (5) is configured inside the sub-tube (44) for controlling the forward and backward movement of the carriage (45). The extrusion assembly (5) includes a slide rod (51) that slides inside the sub-tube (44). The end of the slide rod (51) extends out of the sub-tube (44). An extrusion frame (52) slides inside the slide rod (51). The front and rear ends of the extrusion frame (52) and the carriage (45) near the extrusion frame (52) are both inclined. The extrusion assembly (5) also includes a vertical rod (515) fixed inside the sub-tube (44).

2. The intelligent dimension measuring device based on gear machining according to claim 1, characterized in that: A first rack (53) is fixedly connected to the outer wall of the slide rod (51), a first gear (54) is rotatably connected to the outer wall of the vertical rod (515), the first rack (53) meshes with the first gear (54), a second gear (55) is rotatably connected to the top of the vertical rod (515), a second rack (56) is fixedly connected to the front side of the extrusion frame (52), the second rack (56) meshes with the second gear (55), a bracket (57) is fixedly fixed inside the secondary tube (44), the outer wall of the slide rod (51) is slidably connected to the bracket (57), the outer side of the bracket (57) is fixedly connected to the inner wall of the secondary tube (44), a spring (58) is fixedly connected between the bracket (57) and the slide rod (51), a third motor (47) is fixedly fixed inside the measuring tube (43), a lead screw (48) is fixed to the output shaft of the third motor (47), and the output shaft of the lead screw (48) is threadedly connected to the secondary tube (44).

3. The intelligent dimension measuring device based on gear machining according to claim 2, characterized in that: The size of the second gear (55) is larger than the size of the first rack (53).

4. The intelligent dimension measuring device based on gear machining according to claim 3, characterized in that: The top of the vertical rod (515) is located inside the second gear (55). A limiting block (59) is fixed to the top of the vertical rod (515). A ratchet (510) is fixedly connected to the inner side of the second gear (55). A locking rod (511) rotates around the ring side of the limiting block (59). A spring piece (512) is fixedly connected between the locking rod (511) and the limiting block (59). A connecting rod (514) is fixedly connected between the second gear (55) and the first gear (54).

5. The intelligent dimension measuring device based on gear machining according to claim 4, characterized in that: The first electromagnetic block (513) is fixedly connected inside the limiting block (59), and the lever (511) is made of iron.

6. The intelligent dimension measuring device based on gear machining according to claim 1, characterized in that: The clamping assembly (6) includes a second motor (61) fixedly connected to the middle position of the bottom of the measuring seat (2). The output shaft of the second motor (61) is fixed with a main bevel gear (62). A secondary bevel gear (63) meshes around the main bevel gear (62). A screw (65) is fixed to the outer wall of the secondary bevel gear (63). The screw (65) is rotatably connected to the measuring seat (2). A clamping frame (64) is threadedly connected to the outer wall of the screw (65). The outer wall of the clamping frame (64) is slidably connected to the measuring seat (2).

7. The intelligent dimension measuring device based on gear machining according to claim 1, characterized in that: The inner side of the gear (3) to be tested is provided with a cleaning component (7). The cleaning component (7) includes a square tube (71) fixed inside the rotating seat (42). The front and rear ends of the square tube (71) are slidably connected with round tubes (72). The end of the round tube (72) away from the square tube (71) is fixedly inserted with a frame (73). The side of the frame (73) close to the gear (3) to be tested is fixed with soft bristles (74). The cleaning component (7) also includes an electric telescopic rod (75) fixedly connected between the rotating seat (42) and the frame (73).

8. The intelligent dimension measuring device based on gear machining according to claim 7, characterized in that: A rotary joint (76) is installed on the top of the rotating seat (42), and an air inlet pipe (77) is fixed on the side of the rotary joint (76). A small pipe (712) is fixedly connected between the square tube (71) and the rotary joint (76).

9. The intelligent dimension measuring device based on gear machining according to claim 8, characterized in that: The frame (73) has an internal movable iron plate (78), a bent frame (79) is fixed to the top of the iron plate (78), a limiting plate (710) is fixed to the end of the bent frame (79) away from the iron plate (78), and a second electromagnet (711) is fixed to the top of the inside of the frame (73).

10. A method for intelligent measurement of dimensions in gear machining, characterized in that: This method is applicable to the intelligent dimensional measuring device for gear machining as described in any one of claims 1-9, and includes the following steps: S1. Clamping: Place the gear to be tested (3) at the top center of the measuring seat (2) and clamp it using the clamping assembly (6); S2. Measurement: The gear (3) to be measured is measured by the detection component (4).

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