An outer ball cage channel protractor gauge

Abstract

The present application belongs to the technical field of automobile parts detection, and particularly relates to an outer ball cage channel indexing gauge, which comprises a workpiece, a centering turntable for clamping the workpiece, the centering turntable being rotationally connected in a rotary table, the rotary table being rotationally connected on a workbench, the rotary table and the centering turntable being driven by a motor, the workbench being provided with a longitudinal detection frame and a transverse detection frame, the longitudinal detection frame and the transverse detection frame detecting the workpiece through light source detectors, the swing track of the light source detector on the longitudinal detection frame coinciding with the central axis of the workpiece, the movement track of the light source detector on the transverse detection frame being perpendicular to the central axis of the workpiece, the centering turntable being provided with light-emitting plates capable of emitting light sources of different colors, and each light-emitting plate corresponding to each channel on the workpiece in one-to-one correspondence. Each channel can be marked through color, and the computer can quickly classify the detection data of each through hole of the retainer.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts testing technology, specifically relating to an indexing gauge for an outer ball cage groove. Background Technology

[0002] The CV joint of an automobile axle is a key component in the automobile's transmission system. It is responsible for transmitting the engine's power to the wheels, while allowing the wheels to maintain the stability of power transmission during steering and suspension movements.

[0003] The CV joint of an automobile axle consists of an inner CV joint, an outer CV joint, steel balls, and a cage.

[0004] Patent CN222353051U discloses an indexing fixture for the grooves of an outer ball cage. It primarily addresses the current lack of effective equipment for detecting the groove accuracy of outer ball cages. The fixture also includes a housing (2) disposed on a platform, having a plane (21) for placing the outer ball cage (9); a first probe (3) fixedly mounted on the housing, having a first ball head (31) for engaging with one of the outer ball cage's channels (91); a second probe (4) rotatably connected to the housing, having a second ball head (41) for engaging with a second ball head (92) of the outer ball cage; and a test gauge (5) disposed on the platform and positioned opposite the second probe for detecting the rotation of the second probe. This patent provides an indexing fixture for the grooves of an outer ball cage, which facilitates convenient and rapid detection of the grooves.

[0005] Because of its universal joint characteristics, the inner and outer surfaces of the CV joint of an automotive half-shaft are spherical. In order to restrain the steel balls, the surface of the CV joint has multiple grooves. When the above-mentioned device performs quality inspection on the CV joint, it is easy to cause the inspection speed to be too slow because each groove needs to be measured. Summary of the Invention

[0006] The purpose of this invention is to provide an external ball cage groove indexing fixture that can mark each groove with color, ensuring that the computer can quickly classify the test data of each through hole of the cage.

[0007] The technical solution adopted in this invention is as follows: An indexing fixture for an external ball cage groove includes a workpiece and a centering turntable for clamping the workpiece. The centering turntable is rotatably connected inside a rotary table, which is rotatably connected to a worktable. The rotary table and the centering turntable are driven by a motor. A longitudinal inspection frame and a transverse inspection frame are provided on the worktable. The longitudinal and transverse inspection frames inspect the workpiece using light source detectors. The swing trajectory of the light source detector on the longitudinal inspection frame coincides with the central axis of the workpiece, and the movement trajectory of the light source detector on the transverse inspection frame is perpendicular to the central axis of the workpiece. The centering turntable... The turntable is equipped with light-emitting plates that can emit light sources of different colors. Each light-emitting plate corresponds one-to-one with each groove on the workpiece. The detection probe on the light source detector is equipped with an optical fiber for propagating the light source, a photosensitive sensor for detecting the light source signal, and a color sensor for detecting the color of the light source. During the detection, the longitudinal detection frame controls the light source detector to swing at a constant speed, and the centering turntable also rotates at a constant speed. The photosensitive sensor confirms the light signal interval and is used to measure the length and width of the grooves on the workpiece. The color sensor detects light sources of different colors and is used to accurately correspond to each groove on the workpiece.

[0008] A transmission pulley is fixedly connected to the outer side of the rotary table. The transmission pulley is driven to rotate by an external stepper motor and a transmission belt. A limit slot is opened on the top of the rotary table at the position corresponding to the centering rotary table. The limit slot is used to precisely control the stopping position of the rotary table.

[0009] The centering turntable includes a guide shell and a centering sleeve. The centering sleeve is slidably connected to the middle of the guide shell. A guide groove is provided on the bottom side of the centering sleeve. A guide slider is slidably connected to the bottom of the guide shell at the position corresponding to the guide groove. One end of the guide slider is slidably inserted into the guide groove. A clamping slider is fixedly connected to the top of the guide slider. The clamping slider is used to clamp the workpiece and to position the bottom side of the workpiece.

[0010] An electromagnet is fixedly connected to the bottom of the centering sleeve, and a magnet is fixedly connected to the bottom of the guide housing at the position corresponding to the electromagnet; a transmission sleeve is fixedly connected to the bottom of the guide housing, and a second gear is fixedly connected to the transmission sleeve, and the second gear is synchronously controlled by a stepper motor.

[0011] The centering sleeve is provided with a light source fixing frame at the top, and light-emitting plates are provided on each side of the light source fixing frame. A limiting plate is provided at the top of the light source fixing frame, and multiple light-shielding plates are fixedly connected to the bottom side of the limiting plate. The light-shielding plates are used to separate the light-emitting plates on the light source fixing frame. The limiting plate is fixed by nuts, and after the limiting plate is fixed, it squeezes the top of the workpiece.

[0012] The light source detector includes a guide housing, a detection probe slidably connected to the middle of the guide housing, a deflection bushing fixedly connected to the outer side of the detection probe, a gear sector hinged to one side of the guide housing and a transparent disk rotatably connected thereto, a gear one fixedly connected to the transparent disk, the gear one meshing with the gear sector, and the side of the deflection bushing closer to the gear sector and farther from the gear one hinged to the gear sector; a light-blocking plate fixedly connected to the middle of one side of the transparent disk, a light-blocking ring fixedly connected to the outer ring of the transparent disk, a gap between the light-blocking ring and the light-blocking plate, the outer surface of the light-blocking plate being a spiral surface, the light-blocking ring and the light-blocking plate being light-shielding materials, and the transparent disk being a light-transmitting material; a light intensity trigger detector fixedly connected to the outer side of the guide housing, the light intensity trigger detector corresponding to the gap position of the light-blocking ring and the light-blocking plate.

[0013] A limiting ring is provided on the side of the guide housing away from the workpiece, and a spring is sleeved on the outside of the optical fiber. The spring applies a force to the optical fiber toward the workpiece. A beam splitter is fixedly connected to the end of the guide housing away from the workpiece. The photosensitive sensor corresponds to the axis of the optical fiber. The beam splitter is used to reflect the light source transmitted by the optical fiber to the photosensitive sensor and the color sensor respectively.

[0014] The outer diameter detector includes a torsion shaft and a beam strain gauge. The beam strain gauge is fixedly connected to the torsion shaft. A stepper motor is driven to the bottom of the torsion shaft to control the rotation of the torsion shaft. A positioning shaft is fixedly connected to the worktable to control the positioning of the beam strain gauge to zero. A grating ring is provided on the bottom side of the torsion shaft, and a grating sensor is provided on one side of the grating ring. The torsion shaft, the rotary table, and the corresponding centering rotary table are all axially coplanar.

[0015] The longitudinal detection frame includes a lead screw guide rail, a stepper motor, and an adjustable slide rod. The lead screw guide rail is used to control the distance between itself and the workpiece. The stepper motor is used to control the adjustable slide rod to swing in contact with the outer surface of the workpiece. The adjustable slide rod is used to fix the light source detector.

[0016] The transverse inspection frame includes a lead screw guide rail three, a lead screw guide rail two, and an adapter plate. The lead screw guide rail two is used to control the up and down movement of the light source detector and to control the movement of the light source detector toward or away from the workpiece. The adapter plate is used to fix the light source detector.

[0017] The technical effects achieved by this invention are as follows: By placing a light-emitting plate at the corresponding groove position in the middle of the cage, the light source color in each groove on different cages is different. The light color of the light-emitting plate is detected by a color sensor, thereby assisting the detection equipment in classifying the detected data, which facilitates subsequent data collection and averaging. This avoids the problem of errors occurring during detection by conventional mechanical detection equipment due to the large number and similarity of grooves on the cage.

[0018] This invention controls the swing of the light source detector by a longitudinal detection frame. When the light source detector swings and aligns with the groove on the cage, the photosensitive sensor begins to detect the light signal. As the light source detector swings, the photosensitive sensor moves until it can no longer detect the light signal. Since the swing speed of the light source detector is constant, the height of the cage groove can be calculated by the photosensitive sensor time interval, the rotation speed of the light source detector, and the outer diameter measured subsequently.

[0019] This invention uses a light intensity trigger detector to emit a constant light source on one side and receive the light signal on the other side to measure the light intensity. Specifically, a photoresistor and a refractive lens are used to refract the unblocked light to illuminate the photoresistor, so that the resistance value or current of the photoresistor is different for light blocked at different positions, thereby realizing the detection of the tolerance range of the workpiece. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the rotary table in this invention.

[0022] Figure 3 In this invention Figure 2 A schematic diagram of a half-section of the structure.

[0023] Figure 4 This is a schematic diagram of the centering turntable in this invention.

[0024] Figure 5 In this invention Figure 4 A schematic diagram of the longitudinally unfolded structure.

[0025] Figure 6 In this invention Figure 4 A schematic diagram of the half-section structure.

[0026] Figure 7 This is a half-section diagram of the light source detector in this invention.

[0027] Figure 8 This is a schematic diagram of the light-blocking ring and adjacent components in this invention.

[0028] Figure 9In this invention Figure 8 A schematic diagram of the reverse structure.

[0029] Figure 10 In this invention Figure 1 A schematic diagram of the structure of area A.

[0030] Figure 11 This is a schematic diagram of the longitudinal detection frame 3 in this invention.

[0031] Figure 12 In this invention Figure 1 A schematic diagram of the structure of area B.

[0032] Figure 13 This is a schematic diagram of the transverse detection frame structure in this invention.

[0033] The components represented by each number in the attached diagram are listed below: 1. Worktable; 2. Rotary table.

[0034] 3. Longitudinal detection frame; 301. Lead screw guide rail 1; 302. Stepper motor 1; 303. Adjustable slide bar.

[0035] 4. Horizontal inspection frame; 401. Lead screw guide rail two; 402. Lead screw guide rail three; 403. Adapter plate.

[0036] 5. Light source detector; 501. Guide housing; 502. Detection probe; 503. Optical fiber; 504. Deflection bushing; 505. Light intensity trigger detector; 506. Spring; 507. Beam splitter; 508. Photosensitive sensor; 509. Color sensor; 510. Gear sector; 511. Transparent disk; 512. Light blocking ring; 513. Light blocking plate; 514. Gear one.

[0037] 6. Outer diameter detector; 601. Torsion shaft; 602. Beam strain gauge; 603. Positioning shaft; 604. Grating sensor; 605. Grating ring; 606. Stepper motor II.

[0038] 7. Centering turntable; 701. Guide housing; 702. Light source mounting bracket; 703. Light-emitting plate; 704. Holding slider; 705. Light shield; 706. Limiting plate; 707. Transmission sleeve; 708. Gear II; 709. Centering sleeve; 710. Guide groove; 711. Guide slider; 712. Electromagnet; 713. Magnet.

[0039] 8. Workpiece; 9. Transmission pulley; 10. Limiting groove. Detailed Implementation

[0040] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0041] like Figures 1 to 13 As shown, an external ball cage groove indexing fixture includes a workpiece 8 and a centering turntable 7 for clamping the workpiece 8. The centering turntable 7 is rotatably connected inside a rotary table 2, which is rotatably connected to a worktable 1. The rotary table 2 and the centering turntable 7 are driven by a motor.

[0042] The workbench 1 is equipped with a longitudinal inspection frame 3 and a transverse inspection frame 4. The longitudinal inspection frame 3 and the transverse inspection frame 4 inspect the workpiece 8 through the light source detector 5.

[0043] The swing trajectory of the light source detector 5 on the longitudinal inspection frame 3 coincides with the central axis of the workpiece 8, and the motion trajectory of the light source detector 5 on the transverse inspection frame 4 is perpendicular to the central axis of the workpiece 8.

[0044] The centering turntable 7 is equipped with light-emitting plates 703 that can emit light sources of different colors. Each light-emitting plate 703 corresponds to each channel on the workpiece 8. The detection probe 502 on the light source detector 5 is equipped with an optical fiber 503 for propagating the light source, a photosensitive sensor 508 for detecting the light source signal, and a color sensor 509 for detecting the color of the light source.

[0045] During the inspection, the longitudinal inspection frame 3 controls the light source detector 5 to swing at a constant speed, and the centering turntable 7 also rotates at a constant speed. The light signal interval is confirmed by the photosensitive sensor 508, which is used to measure the length and width of the grooves on the workpiece 8. The color sensor 509 detects light sources of different colors, which is used to accurately correspond to each groove on the workpiece 8.

[0046] Furthermore, the number of centering turntables 7 is multiple, preferably four.

[0047] Furthermore, the light-emitting panel 703 has at least 24 types of light colors, and each light-emitting panel 703 can emit light of all colors.

[0048] Based on the above structure, since the outer ball cage has multiple grooves on its cage, and since the cage is a rotating component, conventional mechanical testing equipment cannot easily correlate the tested data with the grooves on each cage. This solution places a light-emitting plate 703 at the corresponding groove position in the middle of the cage, so that the light source color in each groove on different cages is different. The color sensor 509 detects the light color of the light-emitting plate 703, thereby assisting the testing equipment in classifying the tested data to facilitate subsequent data collection and averaging.

[0049] The light source detector 5 is controlled to swing by the longitudinal detection frame 3. When the light source detector 5 swings and corresponds to the groove on the cage, the photosensitive sensor 508 starts to detect the light signal. As the light source detector 5 swings, the photosensitive sensor 508 moves until it can no longer detect the light signal. Since the swing speed of the light source detector 5 is constant, the height of the cage groove can be calculated by the time interval of the photosensitive sensor 508, the rotation speed of the light source detector 5, and the outer diameter measured subsequently.

[0050] Simultaneously, the height of the cage groove can be calculated by using the time interval of the photosensitive sensor 508, the rotation speed of the centering turntable 7, and the outer diameter measured subsequently, thereby realizing the size detection of the cage groove.

[0051] See attached document Figure 1 To be continued Figure 13 A transmission pulley 9 is fixedly connected to the outer side of the rotary table 2. The transmission pulley 9 is driven to rotate by an external stepper motor and a transmission belt. A limit slot 10 is opened at the top of the rotary table 2 corresponding to the position of the centering rotary table 7. The limit slot 10 is used to precisely control the stopping position of the rotary table 2.

[0052] Furthermore, the electronic clips are inserted into the rotary table 2, and a numerical change occurs when they are inserted, thereby ensuring that the workpiece 8 can be accurately positioned with each other.

[0053] Based on the above structure, the centering turntable 7 on the rotary table 2 is inspected in three steps by rotating the transmission pulley 9, thereby reducing the overall inspection time of the cage and improving the inspection efficiency.

[0054] See attached document Figure 1 To be continued Figure 13 The centering turntable 7 includes a guide housing 701 and a centering sleeve 709. The centering sleeve 709 is slidably connected to the middle of the guide housing 701. A guide groove 710 is provided on the bottom side of the centering sleeve 709. A guide slider 711 is slidably connected to the bottom of the guide housing 701 at the position corresponding to the guide groove 710. One end of the guide slider 711 is slidably inserted into the guide groove 710.

[0055] The top of the guide slider 711 is fixedly connected to the clamping slider 704, which is used to clamp the workpiece 8 and to position the bottom side of the workpiece 8.

[0056] An electromagnet 712 is fixedly connected to the bottom of the centering sleeve 709, and a magnet 713 is fixedly connected to the bottom of the guide housing 701 at the position corresponding to the electromagnet 712.

[0057] A transmission sleeve 707 is fixedly connected to the bottom of the guide housing 701, and a gear 708 is fixedly connected to the transmission sleeve 707. The gear 708 is controlled synchronously with the gear by a stepper motor.

[0058] Furthermore, by controlling the direction of the current flowing into the electromagnet 712, the magnetic poles on the bottom side of the electromagnet 712 are controlled, causing the electromagnet 712 to move toward or away from the magnet 713.

[0059] Furthermore, the guide groove 710 is inclined, so that when the centering sleeve 709 moves downward, the guide slider 711 moves toward the side away from the axis of the workpiece 8 under the guidance of the guide groove 710.

[0060] Furthermore, the clamping surface of the clamping slider 704 is inclined. When the clamping slider 704 contacts the inner ring of the workpiece 8, the inclined surface of the clamping slider 704 can squeeze the inner ring of the workpiece 8, so that the workpiece 8 is tightly attached to the top of the clamping slider 704.

[0061] Furthermore, preferably, each guide housing 701 is rotated by an independent motor.

[0062] According to the above structure, the workpiece 8 is first placed on the top of the clamping slider 704, and then the electromagnet 712 is energized. At this time, the electromagnet 712 and the magnet 713 attract each other and pull the guide slider 711 to move downward. At this time, the guide slider 711 moves towards the center away from the workpiece 8 under the guidance of the guide groove 710. At this time, the clamping slider 704 engages with the inner ring of the workpiece 8 to achieve centering and clamping of the inner ring of the workpiece 8.

[0063] The top of the centering sleeve 709 is provided with a light source fixing bracket 702, and each side of the light source fixing bracket 702 is provided with a light-emitting plate 703. The top of the light source fixing bracket 702 is provided with a limiting plate 706, and the bottom side of the limiting plate 706 is fixedly connected with multiple light-shielding plates 705. The light-shielding plates 705 are used to separate the light-emitting plates 703 on the light source fixing bracket 702.

[0064] The limiting plate 706 is fixed by a nut, and after the limiting plate 706 is fixed, it presses the top of the workpiece 8.

[0065] Furthermore, the light-shielding sheet 705 is made of intersecting materials and is black. The edges of the light-shielding sheet 705 are thickened. The light-shielding sheet 705 is used to divide each light-emitting plate 703 into a separate light-emitting area to avoid interference from the light source.

[0066] According to the above structure, the light-shielding plate 705 and the limiting plate 706 are inserted into the workpiece 8 at the gap positions corresponding to the light-emitting plate 703. Then, the workpiece 8 is rotated so that the light-shielding plate 705 is located at the gap positions of each channel of the workpiece 8. Then, the bolts are tightened to fix the light-shielding plate 705 and the limiting plate 706.

[0067] See attached document Figure 1 To be continued Figure 13The light source detector 5 includes a guide housing 501, a detection probe 502 is slidably connected to the middle of the guide housing 501, a deflection bushing 504 is fixedly connected to the outer side of the detection probe 502, a gear sector 510 is hinged to one side of the guide housing 501 and a transparent disk 511 is rotatably connected to it, a gear 514 is fixedly connected to the transparent disk 511, the gear 514 meshes with the gear sector 510, and the side of the deflection bushing 504 that is close to the gear sector 510 and away from the gear 514 is hinged to the gear sector 510.

[0068] A light-blocking plate 513 is fixedly connected to the middle of one side of the transparent disc 511, and a light-blocking ring 512 is fixedly connected to the outer ring of the transparent disc 511. There is a gap between the light-blocking ring 512 and the light-blocking plate 513. The outer surface of the light-blocking plate 513 is a spiral surface. The light-blocking ring 512 and the light-blocking plate 513 are light-blocking materials, and the transparent disc 511 is a light-transmitting material.

[0069] A light intensity trigger detector 505 is fixedly connected to the outside of the guide housing 501. The light intensity trigger detector 505 corresponds to the light blocking ring 512 and the light blocking plate 513 at the interval position.

[0070] Furthermore, the difference in light intensity per unit rotation angle between the light-blocking ring 512 and the light-blocking plate 513 remains constant.

[0071] Furthermore, when the surface machining accuracy of workpiece 8 is detected, pre-pressure is applied to ensure that the light intensity detected by the light intensity trigger detector 505 is in the middle range, and the value of the light intensity is determined to be zero.

[0072] Furthermore, the light beam emitted by the light intensity trigger detector 505 is greater than the interval between the light-blocking ring 512 and the light-blocking plate 513.

[0073] Furthermore, the light intensity trigger detector 505 emits a constant light source on one side and receives light signals on the other side, and measures the magnitude of the light intensity. Specifically, it uses a photoresistor and a refractive lens to refract the unblocked light and illuminate the photoresistor, so that the resistance value or current of the photoresistor is different for light blocked at different positions, thereby realizing the detection of the workpiece within the tolerance range of 8.

[0074] According to the above structure, after the detection probe 502 is in contact with the outer wall of the workpiece 8, the control light source detector 5 moves towards one side of the workpiece 8. At this time, the detection probe 502 is pushed into the guide housing 501 and drives the deflection sleeve 504 to slide. Under the limit of the hinge at one end of the gear sector 510, the gear sector 510 swings and drives the transparent disk 511 to rotate as a whole through the gear 514 until the light intensity trigger detector 505 detects the light signal at the middle value. Then, the centering turntable 7 is controlled to rotate. At this time, the defects on the outer surface of the workpiece 8 will cause the detection probe 502 to slide back and forth in the guide housing 501 and cause the change in the light intensity detected by the deflection sleeve 504. The difference in the change is used to confirm whether the processing accuracy of the workpiece 8 is qualified.

[0075] See attached document Figure 1 To be continued Figure 13 A limit ring is provided on the side of the guide housing 501 away from the workpiece 8, and a spring 506 is sleeved on the outside of the optical fiber 503. The spring 506 applies a force to the optical fiber 503 in the direction of the workpiece 8.

[0076] A beam splitter 507 is fixedly connected to the end of the guide housing 501 away from the workpiece 8. The photosensitive sensor 508 corresponds to the axis of the optical fiber 503. The beam splitter 507 is used to reflect the light source transmitted by the optical fiber 503 to the photosensitive sensor 508 and the color sensor 509 respectively.

[0077] Furthermore, the side of the beam splitter 507 closest to the optical fiber 503 is a reflective mirror, and the splitting position of the beam splitter 507 corresponds to the axis of the optical fiber 503.

[0078] Furthermore, when the detection probe 502 is not in contact with the workpiece 8, the length of the detection probe 502 protruding from the outside of the guide housing 501 under the action of the spring 506 is kept constant by the limiting ring. The horizontal detection frame 4 can accurately control the distance between the light source detector 5 and the outer surface of the workpiece 8.

[0079] According to the above structure, when the light source emitted by the light-emitting plate 703 passes through the channel on the workpiece 8 and enters the optical fiber 503, it is transmitted through the optical fiber 503 and projected onto the beam splitter 507. Under the reflection of the beam splitter 507, the light sensor 508 and the color sensor 509 are activated, thereby facilitating the standardization of the measurement data of the workpiece 8.

[0080] See attached document Figure 1 To be continued Figure 13The outer diameter detector 6 includes a torsion shaft 601 and a beam strain gauge 602. The beam strain gauge 602 is fixedly connected to the torsion shaft 601. A stepper motor 606 is driven to the bottom of the torsion shaft 601. The stepper motor 606 is used to control the rotation of the torsion shaft 601. A positioning shaft 603 is fixedly connected to the worktable 1. The positioning shaft 603 is used to control the positioning of the beam strain gauge 602 to zero. A grating ring 605 is provided on the bottom side of the torsion shaft 601. A grating sensor 604 is provided on one side of the grating ring 605.

[0081] The torsion shaft 601, the rotary table 2, and the corresponding centering rotary table 7 are all on the same plane.

[0082] Furthermore, the plane formed by the axis of the positioning shaft 603 and the axis of the torsion shaft 601 is perpendicular to the plane formed by the centering turntable 7 and the axis of the torsion shaft 601.

[0083] Furthermore, by rotating the strain gauge 602 in the opposite direction to contact the positioning shaft 603, after the workpiece 8 to be tested rotates to a fixed position, the strain gauge 602 is rotated in the opposite direction to rotate toward the workpiece 8, and the complementary angle of the rotation angle of the grating ring 605 measured by the grating sensor 604 is calculated.

[0084] According to the above structure, the torsion shaft 601 is rotated by the stepper motor 606, which in turn drives the Liang strain plate 602 to rotate. When the Liang strain plate 602 contacts the outer side of the workpiece 8, the stress of the Liang strain plate 602 changes. The angle between the Liang strain plate 602 and the plane of the axis of the torsion shaft 601 and the centering turntable 7 is measured by the grating sensor 604 and the grating ring 605. The known interval between the torsion shaft 601 and the axis of the centering turntable 7 is also used to drive the workpiece 8 to rotate. This allows the Liang strain plate 602 to continuously sample and measure the angle, remove the smaller values ​​with larger differences, and calculate the average value. This enables the detection of the maximum outer diameter of the outer side of the workpiece 8.

[0085] See attached document Figure 1 To be continued Figure 13 The longitudinal inspection frame 3 includes a lead screw guide rail 301, a stepper motor 302, and an adjustable slide bar 303. The lead screw guide rail 301 is used to control the distance between itself and the workpiece 8. The stepper motor 302 is used to control the adjustable slide bar 303 to swing against the outer surface of the workpiece 8. The adjustable slide bar 303 is used to fix the light source detector 5.

[0086] Furthermore, the contact point of the light source detector 5 on the adjustable slide bar 303 is located on the same plane as the annular surface of the maximum outer diameter of the workpiece 8, and the axis of rotation of the stepper motor 302 is perpendicular to and on the same plane as the axis of the rotary table 2 and the corresponding centering rotary table 7.

[0087] According to the above structure, after the outer diameter detector 6 determines the maximum radius of the workpiece 8, the light source detector 5 is controlled to approach the workpiece 8 through the lead screw guide rail 301. Then, the centering turntable 7 is controlled to rotate so that the photosensitive detector 508 detects the light source. Then, the stepper motor 302 is controlled to drive the light source detector 5 to swing, thereby realizing the detection of the groove height of the workpiece 8. Then, the centering turntable 7 is controlled to rotate at a small angle to detect each groove on the workpiece 8 in turn.

[0088] When the photosensitive detector 508 does not detect the light source, it controls the detection probe 502 to contact the surface of the workpiece 8, and at the same time drives the stepper motor 302 to drive the lead screw guide rail 301 to swing as a whole, so that the light source detector 5 can detect the tolerance of the arc surface of the outer wall of the workpiece 8.

[0089] See attached document Figure 1 To be continued Figure 13 The transverse inspection frame 4 includes a lead screw guide rail 3 402, a lead screw guide rail 2 401, and an adapter plate 403. The lead screw guide rail 2 401 is used to control the up and down movement of the light source detector 5 and to control the movement of the light source detector 5 toward or away from the workpiece 8. The adapter plate 403 is used to fix the light source detector 5.

[0090] According to the above structure, after the maximum radius of the workpiece 8 is measured by the outer diameter detector 6, the light source detector 5 is controlled to approach the workpiece 8 by the lead screw guide rail 2 401. Then, the centering turntable 7 is controlled to rotate. The light source interval is measured by the photosensitive detector 508. At the same time, the lead screw guide rail 3 402 can be controlled to drive the lead screw guide rail 2 401 to slide up and down as a whole, so as to realize the detection of the groove length of the workpiece 8 at different heights.

[0091] When the photosensitive sensor 508 is used to detect a large light source, the detection probe 502 is controlled to contact the surface of the workpiece 8, and the centering turntable 7 is controlled to swing back and forth, so as to measure the tolerance value of the roundness of the surface of the workpiece 8.

[0092] The working principle of this invention is as follows: First, place the workpiece 8 on top of the holding slider 704. Insert the light-shielding plate 705 and the limiting plate 706 into the workpiece 8 at the gap positions corresponding to the light-emitting plate 703. Then rotate the workpiece 8 so that the light-shielding plate 705 is located at the gap positions of each channel of the workpiece 8. Then tighten the bolts to fix the light-shielding plate 705 and the limiting plate 706. Then energize the electromagnet 712. At this time, the electromagnet 712 and the magnet 713 attract each other and pull the guide slider 711 to move downward. At this time, the guide slider 711 moves towards the center away from the workpiece 8 under the guidance of the guide groove 710. At this time, the holding slider 704 engages with the inner ring of the workpiece 8 to achieve centering and clamping of the inner ring of the workpiece 8.

[0093] Then, by rotating the transmission pulley 9, the centering turntable 7 on the rotary table 2 is inspected in three steps, thereby reducing the overall inspection time of the cage.

[0094] When workpiece 8 moves to the position corresponding to outer diameter detector 6, stepper motor 606 controls the rotation of torsion shaft 601, which in turn drives the Liang strain plate 602 to rotate. When the Liang strain plate 602 contacts the outer side of workpiece 8, the stress in the Liang strain plate 602 changes, thus confirming whether the Liang strain plate 602 is in contact with the outer surface of workpiece 8. Then, the angle between the Liang strain plate 602 and the plane of the axis of torsion shaft 601 and centering turntable 7 is measured by grating sensor 604 and grating ring 605. The known interval between the axis of torsion shaft 601 and centering turntable 7 is used to drive workpiece 8 to rotate, so that the Liang strain plate 602 continuously checks the measured angle, removes the smaller values ​​with large differences, and calculates the average, thus realizing the detection of the maximum outer diameter of workpiece 8.

[0095] When the workpiece 8 moves to correspond with the longitudinal detection frame 3, the maximum radius of the workpiece 8 is measured by the outer diameter detector 6. Then, the light source detector 5 is controlled to approach the workpiece 8 by the lead screw guide rail 2 401. After that, the centering turntable 7 is controlled to rotate. The light source interval is measured by the photosensitive detector 508. At the same time, the lead screw guide rail 3 402 can be controlled to drive the lead screw guide rail 2 401 to slide up and down as a whole, so as to detect the groove length of the workpiece 8 at different heights.

[0096] When workpiece 8 moves to correspond with the transverse detection frame 4, the light source detector 5 is controlled to approach workpiece 8 via lead screw guide rail 2 401. Then, the centering turntable 7 is controlled to rotate. The light source interval is measured using photosensitive detector 508. At the same time, lead screw guide rail 3 402 can be controlled to drive lead screw guide rail 2 401 to slide up and down as a whole, so as to detect the groove length of workpiece 8 at different heights, thereby confirming the average value and ensuring the accuracy of the measurement results.

[0097] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An indexing fixture for an external ball cage groove, comprising a workpiece (8) and a centering turntable (7) for clamping the workpiece (8), characterized in that: The centering turntable (7) is rotatably connected inside the rotary table (2), which is rotatably connected to the worktable (1). The rotary table (2) and the centering turntable (7) are driven by a motor. The worktable (1) is provided with a longitudinal inspection frame (3) and a transverse inspection frame (4). The longitudinal inspection frame (3) and the transverse inspection frame (4) inspect the workpiece (8) through a light source detector (5). The swing trajectory of the light source detector (5) on the longitudinal inspection frame (3) coincides with the central axis of the workpiece (8), and the movement trajectory of the light source detector (5) on the transverse inspection frame (4) is perpendicular to the central axis of the workpiece (8). The centering turntable (7) is provided with a light-emitting plate (703) that can emit light sources of different colors. Each light-emitting plate (703) corresponds one-to-one with each groove on the workpiece (8). The detection probe (502) on the light source detector (5) is equipped with an optical fiber (503) for propagating the light source, a photosensitive sensor (508) for detecting the light source signal, and a color sensor (509) for detecting the color of the light source. During the detection, the longitudinal detection frame (3) controls the light source detector (5) to swing at a constant speed, and the centering turntable (7) also rotates at a constant speed. The photosensitive sensor (508) confirms the light signal interval and is used to measure the length and width of the groove on the workpiece (8). The color sensor (509) detects light sources of different colors and is used to accurately correspond each groove on the workpiece (8).

2. The external ball cage channel indexing gauge according to claim 1, characterized in that: The rotary table (2) is fixedly connected to a transmission pulley (9). The transmission pulley (9) is driven to rotate by an external stepper motor and a transmission belt. A limit slot (10) is opened at the top of the rotary table (2) corresponding to the position of the centering turntable (7). The limit slot (10) is used to precisely control the stopping position of the rotary table (2).

3. The external ball cage channel indexing gauge according to claim 1, characterized in that: The centering turntable (7) includes a guide housing (701) and a centering sleeve (709). The centering sleeve (709) is slidably connected to the middle of the guide housing (701). A guide groove (710) is provided on the bottom side of the centering sleeve (709). A guide slider (711) is slidably connected to the bottom of the guide housing (701) at the position corresponding to the guide groove (710). One end of the guide slider (711) is slidably inserted into the guide groove (710). A support slider (704) is fixedly connected to the top of the guide slider (711). The slider (704) is used to clamp the workpiece (8), and the slider (704) is also used to position the bottom side of the workpiece (8); the bottom of the centering sleeve (709) is fixedly connected to an electromagnet (712), and the bottom of the guide shell (701) is fixedly connected to a magnet (713) at the position corresponding to the electromagnet (712); the bottom of the guide shell (701) is fixedly connected to a transmission sleeve (707), and a gear two (708) is fixedly connected to the transmission sleeve (707), and the gear two (708) is synchronously controlled with the gear by a stepper motor.

4. The external ball cage channel indexing gauge according to claim 3, characterized in that: The centering sleeve (709) is provided with a light source fixing frame (702) at the top, and a light-emitting plate (703) is provided on each side of the light source fixing frame (702). A limiting plate (706) is provided at the top of the light source fixing frame (702). A plurality of light-shielding plates (705) are fixedly connected to the bottom side of the limiting plate (706). The light-shielding plates (705) are used to separate the light-emitting plates (703) on the light source fixing frame (702). The limiting plate (706) is fixed by a nut. After the limiting plate (706) is fixed, it presses the top of the workpiece (8).

5. The external ball cage channel indexing gauge according to claim 1, characterized in that: The light source detector (5) includes a guide housing (501), a detection probe (502) is slidably connected to the middle of the guide housing (501), a deflection sleeve (504) is fixedly connected to the outer side of the detection probe (502), a gear sector (510) is hinged to one side of the guide housing (501), and a transparent disk (511) is rotatably connected thereto. A gear one (514) is fixedly connected to the transparent disk (511), and the gear one (514) meshes with the gear sector (510). The side of the deflection sleeve (504) closest to the gear sector (510) and furthest from the gear one (514) is hinged to the gear sector (510). A light-blocking plate (513) is fixedly connected to the middle of one side of the transparent disc (511). A light-blocking ring (512) is fixedly connected to the outer ring of the transparent disc (511). There is a gap between the light-blocking ring (512) and the light-blocking plate (513). The outer surface of the light-blocking plate (513) is a spiral surface. The light-blocking ring (512) and the light-blocking plate (513) are light-shielding materials, and the transparent disc (511) is a light-transmitting material. A light intensity trigger detector (505) is fixedly connected to the outer side of the guide shell (501). The light intensity trigger detector (505) corresponds to the gap position between the light-blocking ring (512) and the light-blocking plate (513).

6. The external ball cage channel indexing gauge according to claim 5, characterized in that: A limiting ring is provided on the side of the guide housing (501) away from the workpiece (8), and a spring (506) is sleeved on the outside of the optical fiber (503). The spring (506) applies a force to the optical fiber (503) in the direction of the workpiece (8). A beam splitter (507) is fixedly connected to the end of the guide housing (501) away from the workpiece (8). The photosensitive sensor (508) corresponds to the axis of the optical fiber (503). The beam splitter (507) is used to reflect the light source transmitted by the optical fiber (503) to the photosensitive sensor (508) and the color sensor (509) respectively.

7. The external ball cage channel indexing gauge according to claim 1, characterized in that: It also includes an outer diameter detector (6), which includes a torsion shaft (601) and a beam strain gauge (602). The beam strain gauge (602) is fixedly connected to the torsion shaft (601). A stepper motor (606) is driven to the bottom of the torsion shaft (601). The stepper motor (606) is used to control the rotation of the torsion shaft (601). A positioning shaft (603) is fixedly connected to the worktable (1). The positioning shaft (603) is used to control the positioning of the beam strain gauge (602) to zero. A grating ring (605) is provided on the bottom side of the torsion shaft (601). A grating sensor (604) is provided on one side of the grating ring (605). The axial directions of the torsion shaft (601), the rotary table (2), and the corresponding centering rotary table (7) are in the same plane.

8. The external ball cage channel indexing gauge according to claim 1, characterized in that: The longitudinal detection frame (3) includes a lead screw guide rail (301), a stepper motor (302), and an adjustable slide bar (303). The lead screw guide rail (301) is used to control the distance between itself and the workpiece (8). The stepper motor (302) is used to control the adjustable slide bar (303) to swing against the outer surface of the workpiece (8). The adjustable slide bar (303) is used to fix the light source detector (5).

9. The external ball cage channel indexing gauge according to claim 1, characterized in that: The transverse inspection frame (4) includes a lead screw guide rail three (402), a lead screw guide rail two (401), and a transition plate (403). The lead screw guide rail two (401) is used to control the light source detector (5) to move up and down. The lead screw guide rail two (401) is used to control the light source detector (5) to move toward or away from the workpiece (8). The transition plate (403) is used to fix the light source detector (5).

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