Transmission shaft retainer window height detector
By designing a drive shaft cage window height detector, using a comparison method and a limiting device, the problems of low efficiency and low accuracy in the existing technology are solved, and fast and accurate window height measurement is achieved, which reduces the scrap rate and improves production efficiency.
Patent Information
- Application Number
- CN202422840405.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The prior art is inefficient and low in accuracy when measuring the height of the drive shaft cage window, resulting in high waste rate and waste of resources.
A transmission shaft cage window height detector was designed, and the cage window height was quickly and accurately measured by a dial gauge and limiting device, and the ball guide rail and spring structure were used to achieve rapid positioning and reading of window height.
It realizes fast and accurate measurement of cage window height, reduces waste rate, frees up three-coordinate resources, and improves production efficiency.
Smart Images
Figure CN223295353U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a window height measuring instrument, in particular to a transmission shaft retainer window height detector. Background Art
[0002] The drive shaft of a car's constant velocity universal joint consists of a fixed end joint, an intermediate shaft, and a movable end joint. The fixed end joint is directly connected to the car's wheel hub, while the movable end joint is directly connected to the engine's differential. The engine's power is transmitted to the wheel through the differential, movable end joint, intermediate shaft, fixed end joint, and wheel hub, thereby driving the wheel's rotation. The fixed end joint primarily consists of an outer ring, a retainer, steel balls, and an inner ring; the movable end joint primarily consists of an outer sleeve, a retainer, steel balls, and an inner sleeve. The retainer's window height matches the steel balls, and the retainer window is finished through a grinding process that requires high precision. If the window's dimensional accuracy is unsatisfactory, the retainer window and steel balls will not meet technical specifications, resulting in wear, shortening the retainer's service life, and causing 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 inefficient, requiring production to be stopped waiting for the three-coordinate measurement results. This also occupied three-coordinate resources and wasted a lot of money. 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 utility model is to provide a transmission shaft retainer window height detector. When using this technology, when measuring the retainer window height, it is not only efficient and convenient to adjust, but also can ensure the detection accuracy of the retainer window height.
[0004] The technical solution of the present utility model is: a transmission shaft retainer window height detector, comprising a pillar, a workbench, a vertical plate, a measuring device, a measuring upper limit positioning device, and a measuring lower limit positioning device, wherein 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 dial indicator 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 for threaded connection, the rod of the dial indicator is installed in the notch, the rod of the dial indicator is fixed to the clamping block by the screw A, and the lower end of the rod of the dial indicator 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, the sliding body and the ball guide rail are fixedly connected to the vertical plate, and the sliding body and the ball guide rail are fixedly connected to the vertical plate. Sliding connection, the upper part of the sliding body is opposite to the contact of the micrometer, the connecting blocks are fixedly mounted 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 measuring head is fixedly connected to the sliding body, an upper contact is provided on the upper measuring head, and an inclined surface is provided on the upper contact. The measuring lower limit positioning device has a lower measuring head, a floating plate, a bolt, and a spring A. The lower measuring head is fixedly connected to the vertical plate, and a lower contact is provided under the lower measuring head. The upper contact is opposite to the lower contact, and the floating plate is arranged above the workbench, and 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, and a side surface of the limiting block is opposite to a side surface of the floating plate.
[0006] The workbench 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 installed 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 retainer to the lower plane of the window, firstly, a mark is burned on the window of the retainer after three-coordinate measurement as a retainer sample, which is placed on the detector and adjusted to the window height position and the reading of the dial indicator is read, and a given tolerance range is marked on the dial of the dial indicator, the retainer sample is removed, and the retainer to be measured is placed on it, if the pointer of the dial indicator is within the marked range, the retainer window height is qualified, otherwise it is unqualified and needs to be adjusted, therefore, the present invention can quickly and accurately measure the window height value of the retainer, which is not only efficient, but also reliable in measurement results, reduces the scrap rate, and liberates the three-coordinate. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 The utility model is a structural diagram of a transmission shaft retainer window height detector.
[0010] Figure 2 yes Figure 1 Left-facing view.
[0011] Figure 3 It is a structural diagram of the cage.
[0012] Figure 4 yes Figure 3 Top view of .
[0013] Figure 5 yes Figure 1 Enlarged view of part I in the middle.
[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 dial indicator, 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 plane. 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 dial indicator 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 dial indicator is installed in the notch 12, and the rod 10 of the dial indicator is fixed to the clamping block 13 by a screw A14. The lower end of the rod 10 of the dial indicator 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. Above the slide 8 Opposite to the contact 15 of the micrometer, the connecting block 19 is fixed on both sides of the slide, 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 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 smooth entry of the upper contact 16 into 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 retaining frame window 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 slider 8, that is, the distance between the upper contact 16 on the slider 8 and the upper plane 30 of the retaining frame window is within a reasonable range that is easy to measure (0.2-0.3mm), so that the upper contact 16 can pass through the inclined surface 26 and enter the middle of the upper plane 30 of the retaining frame window; 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 the 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 surface 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 surface 33 of the retainer. The window of the retainer has a window upper plane 30 and a window lower plane 31. The height of the retainer window 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: using the comparison method, first burn a mark on the holder window after three-coordinate measurement as a holder sample, and record the specific value of the window height, place the holder sample on the floating plate 4, with the reference surface 33 side facing downward, and align the window direction of the holder sample with the upper probe 17 and the lower probe 20, press the floating plate 4 downward (the spring A6 under the floating plate retracts and the floating plate contacts the screw D25), and then push the holder forward until the middle part of the lower plane 31 of the holder window is located below the lower contact 21. Synchronously, the upper plane 30 of the holder window contacts the inclined surface 26 of the upper contact 16. Under the action of the force, the upper contact 16 drives the slider 8 downward until the middle of the upper plane 30 of the holder window is located below the lower contact 21. The position is located above the upper contact 16, and the force pressing down the floating plate 4 is released. Under the elastic force of spring A6, the floating plate 4 rises, and the lower plane 31 of the retainer window is close to the lower contact 21. Synchronously, under the action of spring B7, the slider 8 rises, so that the upper contact 16 fixed thereto is close to the upper plane 30 of the retainer window. At this time, read the reading of the dial indicator 11, and mark the given tolerance range on the dial of the dial indicator 11. Remove the retainer sample and follow the same steps as above to make the middle position of the upper plane 30 and the lower plane 31 of the window of the retainer to be tested close to the upper contact 16 and the lower contact 21. If the pointer of the dial indicator 11 is within the marked range, the retainer window height 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), and the clamping block (13) is provided with a notch (12) and a screw A (14) connected by a thread, and the rod (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). The lower end of the micrometer rod (10) is provided with a contact (15). The upper limit positioning device for measuring the upper limit comprises a ball guide rail (9), a slide (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 slide (8) is slidably connected to the ball guide rail (9). The upper part of the slide (8) is connected to the contact (15) of the micrometer. ) relative to each other, the connecting block (19) is fixed on both sides of the slide, 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 (8), the upper probe (17) is provided with an upper contact (16), the upper contact is provided with an inclined surface (26), the lower limit positioning device of the measurement 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 retainer window height detector according to claim 1, characterized in that: 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).
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 retainer are installed below the lower probe (20), and the two screws C (22) are threadedly connected to the vertical plate (3).