Outer ball cage channel indexing gauge

Abstract

The invention belongs to the technical field of automobile part detection, and particularly relates to an outer ball cage channel indexing gauge which comprises a workpiece and a centering rotary table used for clamping the workpiece, the centering rotary table is rotationally connected into a rotary table, the rotary table is rotationally connected to a workbench, and the rotary table and the centering rotary table are driven by a motor. A longitudinal detection frame and a transverse detection frame are arranged on the workbench, the longitudinal detection frame and the transverse detection frame detect a workpiece through a light source detector, the swing track of the light source detector on the longitudinal detection frame coincides with the central axis of the workpiece, and the motion track of the light source detector on the transverse detection frame is perpendicular to the central axis of the workpiece; light-emitting plates capable of emitting light sources of different colors are arranged in the centering rotary table, and the light-emitting plates are in one-to-one correspondence with the channels in the workpiece. All channels can be marked through colors, and it is guaranteed that a computer rapidly classifies detection data of all through holes of the holder.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive parts inspection, and particularly relates to an outer constant velocity joint groove indexing fixture. Background Art

[0002] The automotive half shaft constant velocity joint is a key component in the automotive transmission system, responsible for transmitting the power of the engine to the wheels, and at the same time allowing the wheels to maintain the stability of power transmission during steering and suspension movement.

[0003] The automotive half shaft constant velocity joint is composed of an inner constant velocity joint, an outer constant velocity joint, steel balls, and a cage.

[0004] The patent with the publication number CN222353051U discloses an outer constant velocity joint groove indexing fixture. It mainly solves the problem that there is currently no good equipment for detecting the groove accuracy of the outer constant velocity joint. It also includes a housing (2) provided on the platform, which has a plane (21) for placing the outer constant velocity joint (9); a first probe head (3) fixedly installed on the housing, which has a first ball head (31) for fitting with a ball track (91) of the outer constant velocity joint; a second probe head (4) rotatably connected to the housing, which has a second ball head (41) for fitting with the second ball track (92) of the outer constant velocity joint; a test gauge (5) provided on the platform and arranged opposite to the second probe head for detecting the rotation of the second probe head. This patent provides an outer constant velocity joint groove indexing fixture that can conveniently detect the grooves of the outer constant velocity joint, and is easy and fast to use.

[0005] Due to the universal transmission characteristics of the automotive half shaft constant velocity joint, both the inner and outer surfaces of the cage are spherical surfaces, and the cage is provided with a plurality of grooves on its surface to restrain the steel balls. When the above device conducts quality inspection on the cage, since each groove needs to be measured, it is easy to cause the detection speed to be too slow. Summary of the Invention

[0006] The purpose of the present invention is to provide an outer constant velocity joint groove indexing fixture that can mark each groove by color to ensure the computer quickly classifies the detection data of each through hole of the cage.

[0007] The technical solution adopted by the present invention is as follows: An outer constant velocity joint groove indexing inspection tool, including a workpiece and a centering turntable for clamping the workpiece. The centering turntable is rotatably connected within a rotary table, and the rotary table is rotatably connected to a workbench. The rotary table and the centering turntable are driven by a motor. A longitudinal detection frame and a transverse detection frame are arranged on the workbench. The longitudinal detection frame and the transverse detection frame detect the workpiece through a light source detector. The swing trajectory of the light source detector on the longitudinal detection frame coincides with the central axis of the workpiece, and the movement trajectory of the light source detector on the transverse detection frame is perpendicular to the central axis of the workpiece. A light emitting plate capable of emitting light of different colors is arranged within the centering turntable, and each light emitting plate corresponds to each groove on the workpiece one by one. An optical fiber for transmitting the light source, a photosensitive inductor for detecting the light source signal, and a color inductor for detecting the color of the light source are arranged within the detection probe of the light source detector. During the detection, the longitudinal detection frame controls the swing of the light source detector at a constant speed, and the centering turntable also rotates at a constant speed. The light signal interval is confirmed through the photosensitive inductor to measure the length and width of the workpiece groove, and different color light sources are detected through the color inductor to accurately correspond to each groove on the workpiece.

[0008] A transmission belt pulley is fixedly connected to the outer side of the rotary table, and the transmission belt pulley is driven to rotate by an external stepping motor and a transmission belt. A limit card slot is opened at the position corresponding to the centering turntable on the top of the rotary table, and the limit card slot is used to accurately control the pause position of the rotary table.

[0009] The centering turntable includes a guiding outer shell and a centering sleeve. The centering sleeve is slidably connected to the middle of the guiding outer shell. A guiding groove is arranged on the bottom side of the centering sleeve, and a guiding slider is slidably connected to the position corresponding to the guiding groove at the bottom of the guiding outer shell. One end of the guiding slider is slidably inserted into the guiding groove. A clamping slider is fixedly connected to the top of the guiding slider. The clamping slider is used to clamp the workpiece and also used 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 position corresponding to the electromagnet at the bottom of the guiding outer shell. A transmission sleeve is fixedly connected to the bottom of the guiding outer shell, and a second gear is fixedly connected to the transmission sleeve. The second gear is synchronously controlled with the gear through a stepping motor.

[0011] A light source fixing frame is arranged on the top of the centering sleeve. Light emitting plates are arranged on each side of the light source fixing frame. A limiting plate is arranged on the top of the light source fixing frame. A plurality of light shielding sheets are fixedly connected to the bottom side of the limiting plate. The light shielding sheets are used to separate the light emitting plates on the light source fixing frame. The limiting plate is fixed by a nut, and after the limiting plate is fixed, it presses the top of the workpiece.

[0012] The light source detector includes a guide shell, a detection probe is slidably connected to the middle part of the guide shell, a deflection sleeve is fixedly connected to the outer side of the detection probe, a gear fan is hinged on one side of the guide shell, and a transparent disc is rotatably connected, a gear one is fixedly connected to the transparent disc, the gear one is transmission meshed with the gear fan, and the deflection sleeve is hinged to the gear fan on the side close to the gear fan and away from the gear one; a light blocking plate is fixedly connected to the middle part of one side of the transparent disc, a light blocking ring is fixedly connected to the outer ring of the transparent disc, there is a gap between the light blocking ring and the light blocking plate, the outer surface of the light blocking plate is a spiral surface, the light blocking ring and the light blocking plate are light-shielding materials, and the transparent disc is a light-transmitting material; a light intensity trigger detector is fixedly connected to the outer side of the guide shell, and the light intensity trigger detector corresponds to the gap between the light blocking ring and the light blocking plate.

[0013] A limit ring is provided on the side of the guide housing away from the workpiece, and a spring is sleeved on the outer side of the optical fiber, and the spring applies a force to the optical fiber in the direction of the workpiece; a beam splitter is fixedly connected to the end of the guide housing away from the workpiece, the photosensor corresponds to the axis of the optical fiber, and the beam splitter is used to reflect the light source transmitted by the optical fiber to the photosensor and the color sensor respectively.

[0014] The outer diameter detector includes a torsion shaft and a Liang strain plate, wherein the Liang strain plate is fixedly connected to the torsion shaft, a second stepper motor is transmission-connected to the bottom of the torsion shaft, and the second stepper motor is used to control the rotation of the torsion shaft, a positioning shaft is fixedly connected to the workbench, and the positioning shaft is used to control the positioning and zeroing of the Liang strain plate, a grating ring is arranged on the bottom side of the torsion shaft, and a grating sensor is arranged on one side of the grating ring; the axial directions of the torsion shaft, the turntable, and the corresponding centering turntable are coplanar.

[0015] The longitudinal detection frame includes a screw guide rail, a stepper motor, and an adjustable slide rod. The screw guide rail is used to control the distance between the screw guide rail 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, and the adjustable slide rod is used to fix the light source detector.

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

[0017] The technical effects achieved by the present invention are as follows: In the present invention, by placing a light-emitting plate at the position corresponding to the raceway in the middle of the cage, the light source colors in each raceway of different cages are all different. The color sensor detects the light color of the light-emitting plate, so as to assist the detection device to classify the detected data, facilitating subsequent data collection and averaging, and avoiding errors in detection by conventional mechanical detection devices due to the large number and similarity of the raceways on the cage.

[0018] In the present invention, the longitudinal detection frame controls the swing of the light source detector. When the light source detector swings and corresponds to the raceway on the cage, the photosensor starts to detect the optical signal at this time. As the light source detector swings, the photosensor moves to a position where it cannot detect the optical signal. Since the swing speed of the light source detector is constant, the height of the cage raceway can be calculated through the time interval of the photosensor, the rotation speed of the light source detector, and the outer diameter measured subsequently.

[0019] In the present invention, a constant light source is emitted from one side of the detector triggered by the light intensity, and the optical signal is received on the other side, and the magnitude of the illumination intensity is measured. Specifically, a photosensitive resistor and a refractive lens are used to refract the unobstructed light and irradiate it on the photosensitive resistor, so that the resistance value or current of the photosensitive resistor of the light blocked at different positions is different, thereby realizing the detection of the tolerance range of the workpiece. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the present invention.

[0021] Figure 2 is the structural schematic diagram of the turntable in the present invention.

[0022] Figure 3 is in the present invention Figure 2 semi-sectional structural schematic diagram.

[0023] Figure 4 is the structural schematic diagram of the centering turntable in the present invention.

[0024] Figure 5 is in the present invention Figure 4 longitudinal unfolded structural schematic diagram.

[0025] Figure 6 is in the present invention Figure 4 semi-sectional structural schematic diagram.

[0026] Figure 7 is the semi-sectional structural schematic diagram of the light source detector in the present invention.

[0027] Figure 8 is the structural schematic diagram of the light blocking ring and adjacent components in the present invention.

[0028] Figure 9It is in the present invention Figure 8 Schematic diagram of the reverse structure

[0029] Figure 10 It is in the present invention Figure 1 Schematic diagram of the structure of Area A

[0030] Figure 11 Schematic diagram of the structure of the longitudinal detection frame 3 in the present invention

[0031] Figure 12 It is in the present invention Figure 1 Schematic diagram of the structure of Area B

[0032] Figure 13 Schematic diagram of the structure of the transverse detection frame in the present invention

[0033] In the drawings, the list of components represented by each reference numeral is as follows: 1. Workbench; 2. Rotary table

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

[0035] 4. Transverse detection frame; 401. Lead screw guide rail 2; 402. Lead screw guide rail 3; 403. Adapter plate

[0036] 5. Light source detector; 501. Guide housing; 502. Detection probe; 503. Optical fiber; 504. Deflection shaft sleeve; 505. Light intensity trigger detector; 506. Spring; 507. Beam splitter; 508. Light sensor; 509. Color sensor; 510. Tooth fan; 511. Transparent disc; 512. Light blocking ring; 513. Light blocking plate; 514. Gear 1

[0037] 6. Outer diameter detector; 601. Torsion shaft; 602. Beam strain plate; 603. Positioning shaft; 604. Grating sensor; 605. Grating ring; 606. Stepper motor 2

[0038] 7. Centering turntable; 701. Guide housing; 702. Light source fixing frame; 703. Light emitting plate; 704. Clamping slider; 705. Light shielding sheet; 706. Limit plate; 707. Transmission sleeve; 708. Gear 2; 709. Centering sleeve; 710. Guide groove; 711. Guide slider; 712. Electromagnet; 713. Magnet

[0039] 8. Workpiece; 9. Belt pulley; 10. Limit card slot Detailed implementation manners

[0040] In order to make the objectives and advantages of the present invention more clear and understandable, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0041] As Figures 1 to 13 shown, a checking fixture for indexing the outer constant velocity joint groove includes a workpiece 8 and a centering turntable 7 for clamping the workpiece 8. The centering turntable 7 is rotatably connected within a rotary table 2, and the rotary table 2 is rotatably connected to a workbench 1. The rotary table 2 and the centering turntable 7 are driven by motors.

[0042] A longitudinal inspection frame 3 and a transverse inspection frame 4 are provided on the workbench 1. The longitudinal inspection frame 3 and the transverse inspection frame 4 detect the workpiece 8 through a light source detector 5.

[0043] The swinging 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.

[0044] A light emitting plate 703 capable of emitting different color light sources is provided inside the centering turntable 7. Each light emitting plate 703 corresponds to each groove on the workpiece 8 one by one. Inside the detection probe 502 of the light source detector 5, there is an optical fiber 503 for transmitting the light source, a light sensitive inductor 508 for detecting the light source signal, and a color inductor 509 for detecting the color of the light source.

[0045] During the detection, the longitudinal inspection frame 3 controls the swinging of the light source detector 5 at a constant speed, and the centering turntable 7 also rotates at a constant speed. The light signal interval is confirmed through the light sensitive inductor 508 for measuring the length and width of the groove of the workpiece 8. Different color light sources are detected through the color inductor 509 for accurate correspondence of each groove on the workpiece 8.

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

[0047] Even further, the number of types of light colors of the light emitting plate 703 is at least 24, and each light emitting plate 703 can emit all colors of light.

[0048] According to the above structure, since multiple grooves are provided on the cage of the outer constant velocity joint, and since the cage is a rotating member, it is difficult for conventional mechanical inspection equipment to correspond the detected data to each groove on each cage. In this solution, by placing the light emitting plate 703 at the position corresponding to the groove in the middle of the cage, the light colors in each groove on different cages are all different. The light color of the light emitting plate 703 is detected through the color inductor 509, so as to assist the inspection equipment in classifying the detected data for convenient subsequent data collection and averaging.

[0049] The light source detector 5 is controlled by the longitudinal detection frame 3 to swing. When the light source detector 5 swings to correspond to the channel on the cage, the photosensor 508 starts to detect the optical signal at this time. As the light source detector 5 swings, the photosensor 508 moves to a position where it cannot detect the optical signal. Since the swing speed of the light source detector 5 is constant, the height of the cage channel can be calculated by the time interval of the photosensor 508, the rotation speed of the light source detector 5, and the outer diameter measured subsequently.

[0050] At the same time, by the time interval of the photosensor 508, the rotation speed of the centering turntable 7, and the outer diameter measured subsequently, the height of the cage channel can be calculated, so as to realize the dimensional detection of the cage channel.

[0051] Refer to Appendix Figure 1 to Appendix Figure 13 As shown in the figure, a transmission pulley 9 is fixedly connected to the outside of the rotary table 2. The transmission pulley 9 is driven to rotate by an external stepping motor and a transmission belt. A limit card slot 10 is opened at the top of the rotary table 2 corresponding to the position of the centering turntable 7. The limit card slot 10 is used to accurately control the pause position of the rotary table 2.

[0052] Furthermore, an electronic buckle is inserted into the rotary table 2, and when it is inserted, a numerical change occurs, so as to ensure that the workpiece 8 can be accurately positioned with each workpiece 8.

[0053] According to the above structure, by the rotation of the transmission pulley 9, the centering turntable 7 on the rotary table 2 is detected in three steps, so as to reduce the overall detection time of the cage and improve the detection efficiency.

[0054] Refer to Appendix Figure 1 to Appendix Figure 13 As shown in the figure, the centering turntable 7 includes a guiding outer shell 701 and a centering sleeve 709. The centering sleeve 709 is slidably connected to the middle of the guiding outer shell 701. A guiding groove 710 is arranged at the bottom side of the centering sleeve 709. A guiding slider 711 is slidably connected to the bottom of the guiding outer shell 701 corresponding to the position of the guiding groove 710. One end of the guiding slider 711 is slidably inserted into the guiding groove 710.

[0055] The top of the guiding slider 711 is fixedly connected with a clamping slider 704. The clamping slider 704 is used to clamp the workpiece 8, and at the same time, the clamping slider 704 is used to position the bottom side of the workpiece 8.

[0056] The bottom of the centering sleeve 709 is fixedly connected with an electromagnet 712. A magnet 713 is fixedly connected to the bottom of the guiding outer shell 701 corresponding to the position of the electromagnet 712.

[0057] The bottom of the guiding outer shell 701 is fixedly connected with a transmission sleeve 707. A gear two 708 is fixedly connected to the transmission sleeve 707. The gear two 708 is synchronously controlled by a stepping motor and a gear.

[0058] Furthermore, by controlling the direction of the current flowing into the electromagnet 712 , the magnetic pole at the bottom side of the electromagnet 712 is controlled, so that the electromagnet 712 moves toward the magnet 713 or away from the magnet 713 .

[0059] Furthermore, the guide groove 710 is arranged to be inclined, and 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 supporting slider 704 is inclined. When the supporting slider 704 contacts the inner ring of the workpiece 8, the inclined surface of the supporting slider 704 can squeeze the inner ring of the workpiece 8 so that the workpiece 8 fits tightly on the top of the supporting slider 704.

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

[0062] According to the above structure, the workpiece 8 is first placed on the top of the supporting 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 downward. At this time, the guide slider 711 moves toward the middle away from the workpiece 8 under the guidance of the guide groove 710. At this time, the supporting slider 704 is clamped with the inner ring of the workpiece 8 to achieve centering clamping of the inner ring of the workpiece 8.

[0063] A light source fixing frame 702 is arranged on the top of the centering sleeve 709, and light-emitting panels 703 are arranged on each side of the light source fixing frame 702. A limiting plate 706 is arranged on the top of the light source fixing frame 702, and a plurality of shading sheets 705 are fixedly connected to the bottom side of the limiting plate 706. The shading sheets 705 are used to separate the light-emitting panels 703 on the light source fixing frame 702.

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

[0065] Furthermore, the shading sheet 705 is made of an intersecting material and is black, and the edge of the shading sheet 705 is thickened. The shading sheet 705 is used to divide each light-emitting panel 703 into separate light-emitting areas to avoid interference from light sources.

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

[0067] See attached Figure 1 To Attachment Figure 13, the light source detector 5 includes a guiding housing 501. A detection probe 502 is slidably connected to the middle of the guiding housing 501. A deflection shaft sleeve 504 is fixedly connected to the outside of the detection probe 502. A toothed sector 510 is hinged to one side of the guiding housing 501, and a transparent disc 511 is rotatably connected. A first gear 514 is fixedly connected to the transparent disc 511. The first gear 514 is in driving engagement with the toothed sector 510. The deflection shaft sleeve 504 is hinged to the toothed sector 510 on the side away from the first gear 514 near the toothed sector 510.

[0068] 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 helical surface. The light-blocking ring 512 and the light-blocking plate 513 are made of light-blocking materials, and the transparent disc 511 is made of a light-transmitting material.

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

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

[0071] Furthermore, when detecting the surface machining accuracy of the workpiece 8, through preloading, the light intensity detected by the light intensity trigger detector 505 is in the middle section, and the value of this light intensity is determined as the zero value.

[0072] Furthermore, the light column emitted by the light intensity trigger detector 505 is larger than the gap 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 a light signal on the other side, and measures the magnitude of the light intensity. Specifically, a photosensitive resistor and a refractive lens are used to refract the unobstructed light and irradiate it on the photosensitive resistor, so that the resistance values or currents of the photosensitive resistors of the light blocked at different positions are different, thereby realizing the detection of the tolerance range of the workpiece 8.

[0074] According to the above structure, when the detection probe 502 contacts the outer wall of the workpiece 8, the light source detector 5 is controlled to move as a whole towards the workpiece 8. At this time, the detection probe 502 is pushed into the guiding housing 501, driving the deflection shaft sleeve 504 to slide. Under the limit of the hinge at one end of the gear segment 510, the gear segment 510 swings, and drives the transparent disc 511 to rotate as a whole through the first gear 514 until the light signal detected by the light intensity trigger detector 505 is at the intermediate 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 guiding housing 501, and cause changes in the light intensity detected by the deflection shaft sleeve 504. Whether the machining accuracy of the workpiece 8 is qualified is confirmed according to the difference of the changes.

[0075] Refer to the appendix Figure 1 to the appendix Figure 13 As shown in the figure, a limit ring is provided on the side of the guiding housing 501 away from the workpiece 8, and a spring 506 is sleeved outside the optical fiber 503. The spring 506 applies a force towards the workpiece 8 to the optical fiber 503.

[0076] A beam splitter 507 is fixedly connected to the end of the guiding housing 501 away from the workpiece 8. The light 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 light sensor 508 and the color sensor 509 respectively.

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

[0078] Moreover, when the detection probe 502 does not contact the workpiece 8, under the action of the spring 506, the length of the detection probe 502 protruding outside the guiding housing 501 is limited by the limit ring and remains constant. The overall distance between the light source detector 5 and the outer surface of the workpiece 8 can be accurately controlled through the lateral detection frame 4.

[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, after being conducted by the optical fiber 503, it is projected onto the beam splitter 507, and under the reflection of the beam splitter 507, the light sensor 508 and the color sensor 509 work, so as to facilitate the regularization of the measurement data of the workpiece 8.

[0080] Refer to the appendix Figure 1 to the appendix Figure 13, the outer diameter detector 6 includes a torsion shaft 601 and a beam strain plate 602. The beam strain plate 602 is fixedly connected to the torsion shaft 601. A stepping motor two 606 is drivingly connected to the bottom of the torsion shaft 601. The stepping motor two 606 is used to control the rotation of the torsion shaft 601. A positioning shaft 603 is fixedly connected to the workbench 1. The positioning shaft 603 is used to control the positioning and zeroing of the beam strain plate 602. 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 axial directions of the torsion shaft 601, the rotary table 2, and the corresponding centering turntable 7 are coplanar.

[0082] Furthermore, the plane formed by the axis of the set 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] Even further, by reversely rotating the beam strain plate 602 to contact the positioning shaft 603, when the workpiece 8 to be detected rotates to a fixed position, by reversing the beam strain plate 602, the beam strain plate 602 is rotated towards the workpiece 8, and the complementary angle of the rotation angle of the grating ring 605 measured by the grating sensor 604 is obtained.

[0084] According to the above structure, the torsion shaft 601 is controlled to rotate by the stepping motor two 606, and the beam strain plate 602 is driven to rotate. When the beam strain plate 602 contacts the outer side of the workpiece 8, the stress of the beam strain plate 602 changes. The included angle between the beam strain plate 602 and the plane of the axes of the torsion shaft 601 and the centering turntable 7 is measured by the grating sensor 604 and the grating ring 605. With the known interval between the axes of the torsion shaft 601 and the centering turntable 7, the workpiece 8 is driven to rotate at the same time, so that the beam strain plate 602 continuously samples and inspects the measured included angle, removes the larger and smaller values with large differences, and calculates the average value, so as to realize the detection of the maximum outer diameter of the outer side of the workpiece 8.

[0085] Refer to Appendix Figure 1 to Appendix Figure 13 , the longitudinal detection frame 3 includes a lead screw guide rail one 301, a stepping motor one 302, and an adjustable slide bar 303. The lead screw guide rail one 301 is used to control the distance from the workpiece 8. The stepping motor one 302 is used to control the adjustable slide bar 303 to swing along 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 coplanar with the circular ring surface of the maximum outer diameter of the workpiece 8. The axis of the rotating shaft of the stepping motor one 302 is perpendicular and coplanar with the axes of the rotary table 2 and the corresponding centering turntable 7.

[0087] According to the above structure, after the outer diameter detector 6 measures the maximum radius of the workpiece 8, the distance between the light source detector 5 and the workpiece 8 is controlled by the lead screw guide 301. Then, the centering turntable 7 is controlled to rotate so that the photosensor 508 detects the light source. Then, the stepping motor 302 is controlled to drive the light source detector 5 to swing to detect the groove height of the workpiece 8. Then, the centering turntable 7 is controlled to rotate at a small angle to detect multiple channels on the workpiece 8 in sequence.

[0088] When the photosensor 508 does not detect the light source, the detection probe 502 is controlled to contact the outer surface of the workpiece 8, and at the same time, the stepping motor 302 is driven to drive the entire lead screw guide 301 to swing, so that the light source detector 5 detects the circular arc surface tolerance of the outer wall of the workpiece 8.

[0089] Refer to Appendix Figure 1 to Appendix Figure 13 As shown in the figure, the lateral detection frame 4 includes a lead screw guide 402, a lead screw guide 401, and an adapter plate 403. The lead screw guide 401 is used to control the up and down movement of the light source detector 5. The lead screw guide 401 is used to control the movement of the light source detector 5 towards 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 401. Then, the centering turntable 7 is controlled to rotate. When using the photosensor 508 to measure the light source interval, the lead screw guide 402 can also be controlled to drive the lead screw guide 401 and the whole to slide up and down to detect the channel lengths at different heights of the workpiece 8.

[0091] When the photosensor 508 does not detect the large light source, the detection probe 502 is controlled to contact the outer surface of the workpiece 8, and the centering turntable 7 is controlled to swing reciprocally to measure the tolerance value of the roundness of the outer surface of the workpiece 8.

[0092] The working principle of the present invention is as follows: First, the workpiece 8 is placed on the top of the clamping slider 704. The light shielding sheet 705 and the limiting plate 706 are inserted into the inside of 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 sheet 705 is located at the gap positions of each groove of the workpiece 8. Then, the bolt is tightened to fix the light shielding sheet 705 and the limiting plate 706. Then, the electromagnet 712 is energized. At this time, the electromagnet 712 attracts the magnet 713 and pulls the guiding slider 711 to move downward. At this time, the guiding slider 711 is guided by the guiding groove 710 and moves towards the middle of the workpiece 8. At this time, the clamping slider 704 is clamped with the inner ring of the workpiece 8 to realize the centering clamping of the inner ring of the workpiece 8.

[0093] Then, the centering turntable 7 on the turntable 2 is inspected in three steps by the rotation of the driving pulley 9, thereby reducing the inspection time of the entire retainer.

[0094] When the workpiece 8 moves to correspond to the outer diameter detector 6, the torsion shaft 601 is controlled to rotate by the stepper motor 2 606, and the Liang strain plate 602 is driven 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, so as to confirm whether the Liang strain plate 602 contacts the outer surface of the workpiece 8. Then, the angle between the Liang strain plate 602 and the torsion shaft 601 and the axis plane of the centering turntable 7 is measured by the grating sensor 604 and the grating ring 605, and the known interval between the torsion shaft 601 and the axis of the centering turntable 7 is taken. At the same time, the workpiece 8 is driven to rotate, so that the Liang strain plate 602 continuously samples the measured angle, removes the smaller values with larger differences, and calculates the average, so as to realize the detection of the maximum outer diameter of the outer side of the workpiece 8.

[0095] When the workpiece 8 moves to correspond to the longitudinal detection frame 3, 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 through the screw guide rail 2 401, and then the centering turntable 7 is controlled to rotate. The light source interval is measured using the photosensitive sensor 508. At the same time, the screw guide rail 3 402 can also be controlled to drive the screw guide rail 2 401 to slide up and down as a whole, so as to realize the detection of the channel lengths of the workpiece 8 at different heights.

[0096] When the workpiece 8 moves to correspond to the horizontal detection frame 4, the light source detector 5 is controlled to approach the workpiece 8 through the screw guide rail 2 401, and then the centering turntable 7 is controlled to rotate. The light source interval is measured using the photosensor 508. At the same time, the screw guide rail 3 402 can also be controlled to drive the screw guide rail 2 401 to slide up and down as a whole, so as to detect the channel lengths of different heights of the workpiece 8, so as to confirm the average value and ensure the accuracy of the measurement result.

[0097] The above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the art unless otherwise specified and limited.

Claims

1. A checking fixture for indexing the groove of an outer constant velocity joint, comprising a workpiece (8) and a centering turntable (7) for clamping the workpiece (8), characterized in that: The centering turntable (7) is rotatably connected within the rotary table (2), and the rotary table (2) is rotatably connected to the workbench (1). The rotary table (2) and the centering turntable (7) are driven by motors. A longitudinal detection frame (3) and a transverse detection frame (4) are provided on the workbench (1). The longitudinal detection frame (3) and the transverse detection frame (4) detect the workpiece (8) through a light source detector (5). The swinging trajectory of the light source detector (5) on the longitudinal detection frame (3) coincides with the central axis of the workpiece (8), and the movement trajectory of the light source detector (5) on the transverse detection frame (4) is perpendicular to the central axis of the workpiece (8). A light-emitting plate (703) capable of emitting light of different colors is provided within the centering turntable (7), and each light-emitting plate (703) corresponds to each channel on the workpiece (8). A fiber optic cable (503) for transmitting the light source, a light-sensitive sensor (508) for detecting the light source signal, and a color sensor (509) for detecting the color of the light source are provided within the detection probe (502) of the light source detector (5). During the detection, the longitudinal detection frame (3) controls the swinging of the light source detector (5) at a constant speed, and the centering turntable (7) also rotates at a constant speed. The light signal interval is confirmed through the light-sensitive sensor (508) to measure the length and width of the channels of the workpiece (8), and light sources of different colors are detected through the color sensor (509) to accurately correspond to each channel on the workpiece (8).

2. The indexing gauge for the outer constant velocity joint groove according to claim 1, characterized in that: A transmission belt pulley (9) is fixedly connected to the outer side of the rotary table (2), and the transmission belt pulley (9) is driven to rotate by an external stepping motor and a transmission belt. A limit card slot (10) is opened at the position of the rotary table (2) corresponding to the centering turntable (7) at the top, and the limit card slot (10) is used to accurately control the pause position of the rotary table (2).

3. The indexing fixture for the outer constant velocity joint groove according to claim 1, wherein: The centering turntable (7) includes a guiding outer shell (701) and a centering sleeve (709). The centering sleeve (709) is slidably connected to the middle of the guiding outer shell (701). A guiding groove (710) is provided on the bottom side of the centering sleeve (709), and a guiding slider (711) is slidably connected to the position of the bottom of the guiding outer shell (701) corresponding to the guiding groove (710). One end of the guiding slider (711) is slidably inserted into the guiding groove (710). A clamping slider (704) is fixedly connected to the top of the guiding slider (711). The clamping slider (704) is used to clamp the workpiece (8), and at the same time, the clamping slider (704) is used to position the bottom side of the workpiece (8). An electromagnet (712) is fixedly connected to the bottom of the centering sleeve (709), and a magnet (713) is fixedly connected to the position of the bottom of the guiding outer shell (701) corresponding to the electromagnet (712). A transmission sleeve (707) is fixedly connected to the bottom of the guiding outer shell (701), and a second gear (708) is fixedly connected to the transmission sleeve (707). The second gear (708) is synchronously controlled with the gear through a stepping motor.

4. An outer constant velocity joint groove indexing gauge according to claim 3, characterized in that: The top of the centering sleeve (709) is provided with a light source fixing bracket (702). Light emitting plates (703) are arranged on each side of the light source fixing bracket (702). The top of the light source fixing bracket (702) is provided with a limiting plate (706). A plurality of light shielding sheets (705) are fixedly connected to the bottom side of the limiting plate (706). The light shielding sheets (705) are used to separate the light emitting plates (703) on the light source fixing bracket (702). The limiting plate (706) is fixed by a nut. After the limiting plate (706) is fixed, it presses against the top of the workpiece (8).

5. A kind of outer constant velocity joint groove indexing inspection tool according to claim 1, characterized in that: The light source detector (5) includes a guiding outer shell (501). A detection probe (502) is slidably connected to the middle of the guiding outer shell (501). A deflection shaft sleeve (504) is fixedly connected to the outside of the detection probe (502). A toothed fan (510) is hinged to one side of the guiding outer shell (501), and a transparent disc (511) is rotatably connected. A first gear (514) is fixedly connected to the transparent disc (511). The first gear (514) is in transmission engagement with the toothed fan (510). The deflection shaft sleeve (504) is hinged to the toothed fan (510) on the side close to the toothed fan (510) and far from the first gear (514). 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 helical surface. The light blocking ring (512) and the light blocking plate (513) are made of light shielding materials, and the transparent disc (511) is made of light transmissive material. A light intensity trigger detector (505) is fixedly connected to the outside of the guiding outer 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 indexing gauge for outer constant velocity joint grooves according to claim 5, characterized in that: A limiting ring is arranged on the side of the guiding outer shell (501) far from the workpiece (8). 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 towards the workpiece (8). A beam splitting plate (507) is fixedly connected to the end of the guiding outer shell (501) far from the workpiece (8). The photosensor (508) corresponds to the axis of the optical fiber (503). The beam splitting plate (507) is used to reflect the light source transmitted by the optical fiber (503) to the photosensor (508) and the color sensor (509) respectively.

7. An outer constant velocity joint groove indexing inspection tool according to claim 1, characterized in that: It further includes an outer diameter detector (6). The outer diameter detector (6) includes a torsion shaft (601) and a beam strain plate (602). The beam strain plate (602) is fixedly connected to the torsion shaft (601). A second stepping motor (606) is drivingly connected to the bottom of the torsion shaft (601). The second stepping motor (606) is used to control the rotation of the torsion shaft (601). A positioning shaft (603) is fixedly connected to the workbench (1). The positioning shaft (603) is used to control the positioning and zeroing of the beam strain plate (602). A grating ring (605) is provided on the bottom side of the torsion shaft (601). A grating inductor (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 turntable (7) are coplanar.

8. The indexing fixture for the outer constant velocity joint groove according to claim 1, wherein: The longitudinal detection frame (3) includes a first lead screw guide rail (301), a first stepping motor (302), and an adjustable slide bar (303). The first lead screw guide rail (301) is used to control the distance from the workpiece (8). The first stepping motor (302) is used to control the adjustable slide bar (303) to swing along the outer surface of the workpiece (8). The adjustable slide bar (303) is used to fix the light source detector (5).

9. The indexing fixture for the outer constant velocity joint groove according to claim 1, characterized in that: The transverse detection frame (4) includes a third lead screw guide rail (402), a second lead screw guide rail (401), and an adapter plate (403). The second lead screw guide rail (401) is used to control the vertical movement of the light source detector (5). The second lead screw guide rail (401) is used to control the movement of the light source detector (5) towards or away from the workpiece (8). The adapter plate (403) is used to fix the light source detector (5).

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