Transmission shaft retainer window height detector
The transmission shaft retainer window height detector addresses inefficiencies and inaccuracies in existing measurement methods by providing a quick and accurate means to measure retainer window height, thereby reducing scrap and optimizing resource use.
Patent Information
- Application Number
- CN202411669375.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2024-12-31
AI Technical Summary
Existing methods for measuring the window height of transmission shaft retainers in car constant velocity universal joints are inefficient and inaccurate, leading to scrap and resource waste due to long measurement cycles and low precision.
A transmission shaft retainer window height detector comprising a pillar, workbench, vertical plate, measuring device, and positioning devices that allow for quick and accurate measurement by comparing the window height to a marked tolerance range using a micrometer.
Enables efficient and precise measurement of retainer window height, reducing scrap rates and freeing up three-coordinate resources while ensuring measurement accuracy.
Smart Images
Figure CN119223133A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a window height measuring instrument, in particular to a transmission shaft retainer window height detector. Background Art
[0002] The transmission shaft of the car constant velocity universal joint is composed of a fixed end joint, an intermediate shaft and a movable end joint, wherein the fixed end joint is directly connected to the wheel hub of the car wheel, and the movable end joint is directly connected to the differential of the engine. The power of the engine is transmitted to the wheel through the differential, the movable end joint, the intermediate shaft, the fixed end joint and the wheel hub, thereby driving the wheel to rotate. The fixed end joint is mainly composed of an outer ring, a retainer, a steel ball and an inner ring; the movable end joint is mainly composed of an outer sleeve, a retainer, a steel ball and an inner sleeve. The window height of the retainer matches the steel ball. The window of the retainer is completed by grinding and finishing, and the precision requirement is high. If the dimensional accuracy of the window is not up to standard, the matching between the retainer window and the steel ball will not meet the technical specifications, which will be easy to wear, shorten the service life of the retainer, and cause abnormal noise. In the past, the window height of the cage was measured using a lever inner diameter gauge, which required measuring the minimum distance between the upper and lower planes of the window. However, the measurement was inaccurate and inefficient, often resulting in the scrapping of the cage. Alternatively, three-coordinate measurement was used, but the measurement cycle was long and the efficiency was low. Production had to be stopped to wait for the three-coordinate measurement results, and the three-coordinate resources were occupied, resulting in great waste. Therefore, an instrument that can efficiently and conveniently measure the cage window height during grinding and can ensure measurement accuracy is urgently needed at the processing site. Summary of the invention
[0003] The purpose of the present invention is to provide a transmission shaft retainer window height detector. When using this technology to measure the window height of the retainer, it is not only efficient and convenient to adjust, but also can ensure the detection accuracy of the window height of the retainer.
[0004] The technical solution of the present invention is: a transmission shaft retainer window height detector, including a pillar, a workbench, a vertical plate, a measuring device, a measuring upper limit positioning device, and a measuring lower limit positioning device. The workbench is fixedly connected to the vertical plate on the top and supported by the pillar on the bottom. The measuring device has a micrometer and a clamping block, wherein the clamping block is fixedly connected to the vertical plate, the clamping block is provided with a notch and a screw A connected by a thread, the rod of the micrometer is installed in the notch, the rod of the micrometer is fixed to the clamping block by the screw A, and the lower end of the rod of the micrometer is provided with a contact. The measuring upper limit positioning device has a ball guide rail, a sliding body, a connecting block, a screw B, a spring B, and an upper probe. The ball guide rail is fixedly connected to the vertical plate, and the sliding body and the ball guide rail slide Dynamic connection, the upper part of the sliding body is opposite to the contact of the micrometer, the connecting block is fixedly installed on both sides of the sliding body, the screw B passes through the connecting block and is fixedly connected to the vertical plate, the spring B is sleeved on the screw B between the connecting block and the vertical plate, the upper probe is fixedly connected to the sliding body, an upper contact is provided on the upper probe, and an inclined surface is provided on the upper contact. The measuring lower limit positioning device comprises a lower probe, a floating plate, a bolt, and a spring A. The lower probe is fixedly connected to the vertical plate, a lower contact is provided under the lower probe, the upper contact is opposite to the lower contact, the floating plate is arranged above the workbench, a sliding hole is provided on the workbench, the bolt passes through the sliding hole on the workbench and is fixedly connected to the floating plate, and the spring A is sleeved on the bolt between the workbench and the floating plate.
[0005] A limiting block is fixedly installed on the workbench plate, and a side surface of the limiting block is opposite to a side surface of the floating plate.
[0006] The workbench plate is threadedly connected with a screw D, and the top surface of the screw D is opposite to the bottom surface of the floating plate.
[0007] Two screws C for limiting the outer circle position of the retaining frame are arranged below the lower measuring head, and the two screws C are threadedly connected to the vertical plate.
[0008] The advantages of the present invention are as follows: the present invention adopts a comparison method to measure the height from the upper plane of the window of the retaining frame to the lower plane of the window, firstly burns a mark on the retaining frame window after three-coordinate measurement as a retaining frame sample, puts it on the detector and adjusts it to the window height position and reads the reading of the micrometer, and marks a given tolerance range on the dial of the micrometer, removes the retaining frame sample, and places the retaining frame to be measured, if the pointer of the micrometer is within the marked range, the retaining frame window height is qualified, otherwise it is unqualified and needs to be adjusted, therefore, the present invention can quickly and accurately measure the retaining frame window height value, not only has high efficiency, and the measurement result is reliable, the scrap rate is reduced, and the three coordinates are liberated. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of a transmission shaft retainer window height detector of the present invention.
[0010] Figure 2 yes Figure 1 Left view of .
[0011] Figure 3 It is a structural diagram of the cage.
[0012] Figure 4 yes Figure 3 Top view of the .
[0013] Figure 5 yes Figure 1 Enlarged view of part I.
[0014] Figure 6 yes Figure 2 Enlarged view of part II.
[0015] In the figure: 1 pillar, 2 workbench, 3 vertical plate, 4 floating plate, 5 bolt, 6 spring A, 7 spring B, 8 slide, 9 ball guide, 10 rod, 11 micrometer, 12 notch, 13 clamping block, 14 screw A, 15 contact, 16 upper contact, 17 upper probe, 18 screw B, 19 connecting block, 20 lower probe, 21 lower contact, 22 screw C, 23 limit block, 24 sliding hole, 25 screw D, 26 inclined surface, 27 inner cylindrical surface, 28 window, 29 large chamfer, 30 window upper plane, 31 window lower plane, 32 small chamfer, 33 reference surface. DETAILED DESCRIPTION
[0016] The transmission shaft retainer window height detector includes a pillar 1, a workbench 2, a vertical plate 3, a measuring device, a measuring upper limit positioning device, and a measuring lower limit positioning device. The workbench 2 is fixedly connected to the vertical plate 3 on the top and supported by the pillar 1 on the bottom. The measuring device has a micrometer 11 and a clamping block 13, wherein the clamping block 13 is fixedly connected to the vertical plate 3, and the clamping block 13 is provided with a notch 12 and a screw A14 connected by a thread. The rod 10 of the micrometer is installed in the notch 12, and the rod 10 of the micrometer is fixed to the clamping block 13 by the screw A14. The lower end of the rod 10 of the micrometer is provided with a contact 15. The measuring upper limit positioning device has a ball guide rail 9, a slide 8, a connecting block 19, a screw B18, a spring B7, and an upper probe 17. The ball guide rail 9 is fixedly connected to the vertical plate 3, and the slide 8 is slidably connected to the ball guide rail 9. Opposite to the contact 15 of the micrometer, the connecting block 19 is fixedly mounted on both sides of the slide body, the screw B18 passes through the connecting block 19 and is fixedly connected to the vertical plate 3, the spring B7 is sleeved on the screw B18 between the connecting block 19 and the vertical plate 3, the upper probe 17 is fixedly connected to the slide body 8, an upper contact 16 is provided on the upper probe 17, and an inclined surface 26 is provided on the upper contact, the measuring lower limit positioning device comprises a lower probe 20, a floating plate 4, a bolt 5, and a spring A6, the lower probe 20 is fixedly connected to the vertical plate 3, a lower contact 21 is provided below the lower probe 20, the upper contact 16 is opposite to the lower contact 21, the floating plate 4 is arranged above the workbench 2, the workbench 2 is provided with a sliding hole (24), the bolt 5 passes through the sliding hole 24 on the table and is fixedly connected to the floating plate 4, and the spring A6 is sleeved on the bolt 5 between the workbench 2 and the floating plate 4.
[0017] A limiting block 23 is fixedly mounted on the workbench 2 , and a side surface of the limiting block 23 is opposite to a side surface of the floating plate 4 .
[0018] The workbench plate 2 is threadedly connected with a screw D25, and the top surface of the screw D25 is opposite to the bottom surface of the floating plate 4.
[0019] Two screws C22 for limiting the outer circle position of the retaining frame are installed below the lower measuring head 20, and the two screws C22 are threadedly connected to the vertical plate 3.
[0020] In this embodiment, the inclined surface 26 on the upper contact 16 serves to facilitate the upper contact 16 to smoothly enter the window 28; the screw D25 serves to limit the falling range of the floating plate 4, that is, when the floating plate 4 contacts the screw D25, the distance between the lower plane 31 of the window of the retaining frame and the lower contact 21 is within a reasonable range that is easy to measure (0.2-0.3mm); the screw B18 serves to limit the position of the rising point of the sliding body 8, that is, the distance between the upper contact 16 on the sliding body 8 and the upper plane 30 of the window of the retaining frame is within a reasonable range that is easy to measure (0.2-0.3mm), so that the upper contact 16 can enter the middle of the upper plane 30 of the retaining frame window through the inclined surface 26; the limit block 23 serves to limit the rotation of the floating plate 4. The function of the two screws C22 is to adjust the extended length of the screws C22 when the middle position of the upper plane 30 of the window of the retaining frame contacts the upper contact 16 and the middle position of the lower plane 31 of the window contacts the lower contact 21 so that the heads of the two screws C22 contact the outer circle of the retaining frame, thereby facilitating rapid positioning of the retaining frame when measuring the height of the window 28.
[0021] The retainer described in the present invention is a thin-walled part, usually having six or eight windows 28, which are used to keep the steel balls on the same cross-section. In order to easily identify the reference plane 33 of the retainer, a small chamfer 32 and a large chamfer 29 are usually processed on the inner cylindrical surface 27, and the side of the small chamfer 32 is selected as the reference plane 33 of the retainer. The window of the retainer has a window upper plane 30 and a window lower plane 31. The retainer window height is the distance between the window upper plane 30 and the window lower plane 31.
[0022] The working process of the present invention is as follows: the comparison method is adopted, firstly, a mark is burned on the window of the holder after three-coordinate measurement as a holder sample, and the specific value of the window height is recorded, the holder sample is placed on the floating plate 4, with the reference surface 33 side facing downward, and the window direction of the holder sample is aligned with the upper probe 17 and the lower probe 20, and the floating plate 4 is pressed downward (the spring A6 under the floating plate is retracted and the floating plate contacts the screw D25, and then the holder is pushed forward until the middle part of the lower plane 31 of the window of the holder is located below the lower contact 21, and synchronously, the upper plane 30 of the window of the holder contacts the inclined surface 26 of the upper contact 16, and the upper contact 16 drives the slide body 8 to move downward under the action of the force until the middle part of the upper plane 30 of the window of the holder is located below the lower contact 21. The floating plate 4 is located above the upper contact 16, and the force pressing down on the floating plate 4 is released. Under the elastic force of the spring A6, the floating plate 4 rises, and the lower plane 31 of the window of the retainer is close to the lower contact 21. Synchronously, under the action of the spring B7, the sliding body 8 rises, so that the upper contact 16 fixed thereto is close to the upper plane 30 of the window of the retainer. At this time, the reading of the micrometer 11 is read, and the given tolerance range is marked on the dial of the micrometer 11. The retainer sample is removed, and the middle position of the upper plane 30 and the lower plane 31 of the window of the retainer to be tested is made close to the upper contact 16 and the lower contact 21 according to the same steps as above. If the pointer of the micrometer 11 is within the marked range, the height of the retainer window is qualified, otherwise it is unqualified and needs to be adjusted.
Claims
1. Transmission shaft cage window height detector, characterized by: The invention comprises a support (1), a workbench (2), a vertical plate (3), a measuring device, a measuring upper limit positioning device, and a measuring lower limit positioning device, wherein the workbench (2) is fixedly connected to the vertical plate (3) on the top and supported by the support (1) on the bottom, and the measuring device comprises a micrometer (11) and a clamping block (13), wherein the clamping block (13) is fixedly connected to the vertical plate (3), the clamping block (13) is provided with a notch (12) and a screw A (14) connected by a thread, and the rod portion (10) of the micrometer is installed in the notch (12) The micrometer rod (10) and the clamping block (13) are fixed by screws A (14), and a contact (15) is provided at the lower end of the micrometer rod (10). The upper limit positioning device for measuring the upper limit comprises a ball guide rail (9), a sliding body (8), a connecting block (19), a screw B (18), a spring B (7), and an upper probe (17). The ball guide rail (9) is fixedly connected to the vertical plate (3), the sliding body (8) is slidably connected to the ball guide rail (9), and the upper part of the sliding body (8) is connected to the contact (15) of the micrometer. 5), the connecting block (19) is fixedly mounted on both sides of the slide body, the screw B (18) passes through the connecting block (19) and is fixedly connected to the vertical plate (3), the spring B (7) is sleeved on the screw B (18) between the connecting block (19) and the vertical plate (3), the upper probe (17) is fixedly connected to the slide body (8), the upper probe (17) is provided with an upper contact (16), and the upper contact is provided with an inclined surface (26), the measuring lower limit positioning device comprises a lower probe (20), a floating plate (4), a bolt (5 ), spring A (6), the lower probe (20) is fixedly connected to the vertical plate (3), a lower contact (21) is provided below the lower probe (20), the upper contact (16) is opposite to the lower contact (21), the floating plate (4) is arranged above the workbench (2), a sliding hole (24) is provided on the workbench (2), the bolt (5) passes through the sliding hole (24) on the workbench and is fixedly connected to the floating plate (4), and the spring A (6) is sleeved on the bolt (5) between the workbench (2) and the floating plate (4).
2. The transmission shaft cage window height detector according to claim 1, characterized in that: A limit block (23) is fixedly mounted on the workbench plate (2), and a side surface of the limit block (23) is opposite to a side surface of the floating plate (4).
3. The transmission shaft retainer window height detector according to claim 1, characterized in that: The workbench plate (2) is threadedly connected with a screw D (25), and the top surface of the screw D (25) is opposite to the bottom surface of the floating plate (4).
4. The transmission shaft retainer window height detector according to claim 1, characterized in that: Two screws C (22) for limiting the outer circle position of the retaining frame are arranged below the lower measuring head (20), and the two screws C (22) are threadedly connected to the vertical plate (3).