Transmission shaft jacket fairway position degree detector
By designing a transmission shaft jacket fairway position detector, using positioning columns and dial gauge probes, the problem of difficult to efficiently measure the fairway position of the jacket in the prior art is solved, and fast and accurate detection is achieved, which improves production efficiency and reduces waste rate.
Patent Information
- Application Number
- CN202510219987.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-05-13
AI Technical Summary
The prior art is difficult to efficiently and accurately measure the fairway position of the transmission shaft jacket, resulting in wear, stagnation and abnormal noise, and occupy three-coordinate resources, which is a waste.
A transmission shaft jacket fairway position detector is designed, using the positioning column, slidingly connected rod, cylinder and spring structure, combined with a dial probe, to measure the difference in fairway position difference, and quickly and accurately detect the fairway position of the jacket.
It realizes rapid and accurate measurement of the fairway position of the jacket, improves measurement efficiency, reduces the waste rate, liberates the three-coordinate resources, and avoids potential invisible quality problems.
Smart Images
Figure CN119983986A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a transmission shaft outer shell ball track position detector, belonging to a measuring instrument for the ball track position of automobile accessories. 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 ball track of the outer sleeve is matched with the ball track of the inner sleeve through the steel ball. The ball track of the outer sleeve is completed by hard milling or grinding. The precision requirement is high. If the symmetrical position accuracy of the plane where each pair of relative ball tracks of the outer sleeve is located and the rotation center of the outer surface is unqualified, it will cause the outer sleeve ball track to match the inner sleeve ball track through the steel ball. It does not meet the technical specification requirements, is easy to wear, shortens the service life of the outer sleeve, and is stuck and causes abnormal noise. In the past, the ballway position of the jacket was measured by three-coordinate measurement, but the measurement cycle was long and the efficiency was low. The production had to be stopped to wait for the three-coordinate measurement results, and the three-coordinate resources were occupied, which was a big waste. At the same time, a considerable number of companies believed that the ballway position of the jacket was guaranteed by procedures or fixture processing. In fact, with the changes in equipment accuracy, fixture wear and adjustment errors, and blade wear, the ballway position of the jacket has an out-of-tolerance situation, and it is a potential defect that is difficult to find. The out-of-tolerance of the ballway position will directly cause the assembly of the mobile end section to stagnate and make abnormal noises, and production needs to be stopped to wait for the problem to be solved. Therefore, an instrument that can measure the ballway position of the jacket efficiently and conveniently 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 outer casing ball track position detector. When using this technology to measure the outer casing ball track position, it is not only convenient to adjust and efficient, but also can ensure the detection accuracy of the outer casing ball track position.
[0004] The technical solution of the present invention is: the transmission shaft outer sleeve ball track position detector comprises a workbench, a positioning column and a bracket are fixedly installed on the workbench, the positioning column is provided with a through slot, a hole A and a sink A are provided on the positioning column on one side of the through slot, and a hole B and a sink B are provided on the positioning column on the other side of the through slot; a slidably connected rod A is installed in the hole A, one end of the rod A is placed in the sink A and fixedly connected to the steel ball A, the other end of the rod A is provided with a cylinder A, the cylinder A is placed in the through slot, the rod A is provided with a positioning slot A, the positioning column is fixedly provided with a pin A, and the protruding end of the pin A is placed in the positioning slot A; A slidably connected rod B is installed in the hole B, one end of the rod B is placed in the sink B and fixedly connected to the steel ball B, and a cylinder B is provided at the other end of the rod B, which is placed in the through groove and opposite to the cylinder A. A positioning groove B is provided on the rod B, and a pin B is fixedly connected to the positioning column, and the protruding end of the pin B is placed in the positioning groove B; a spring is installed in the through groove, and the spring is sleeved on the cylinder A and the cylinder B; a through hole is provided on the bracket, and the rod of the micrometer passes through the through hole, and the relative position between the rod and the bracket is fixed by a screw provided on the through hole, and a probe is provided on the rod, and the probe is opposite to the center line of the positioning column.
[0005] A gasket is arranged between the workbench plate and the positioning column, and a gasket with a suitable thickness can be selected to adjust the height of the outer jacket.
[0006] The principle of the present invention is: specifically, the inner hole of the outer sleeve is mounted on the positioning column, with the reference surface facing downward, and a pair of relative ballways are made to be opposite to the steel ball A and the steel ball B. Under the elastic force of the spring, the steel ball A and the steel ball B are in contact with the pair of ballways, and the probe of the micrometer is in contact with the outer surface of the outer sleeve. Then, the pointer reading on the micrometer changes, and the pointer reading of the micrometer is recorded. The outer sleeve is rotated 180 degrees and then mounted on the positioning column. Then, the pointer reading on the micrometer changes, and the pointer reading of the micrometer at this time is recorded, and the difference between the two readings is recorded. Similarly, the remaining two pairs of relative ballways are measured according to the above method, and the difference between the other two pairs of ballway measurements is recorded. If the difference between the three pairs is within the specified range of the design, the measurement result is qualified, otherwise it is unqualified and needs to be adjusted.
[0007] The advantages of the present invention are: it can quickly and accurately measure the ball track position value of the outer jacket, which is not only highly efficient, but also reliable in measuring results, reduces the scrap rate, and liberates the three coordinates; the instrument eliminates potential invisible quality problems and avoids the phenomenon of stopping production waiting for the problem to be solved; at the same time, the positioning column of the instrument is made according to the inner hole gauge of the outer jacket, and while detecting the ball track position value of the outer jacket, it also detects whether the inner hole of the outer jacket is qualified. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of a transmission shaft outer sleeve ball track position detector.
[0009] Figure 2 yes Figure 1 Center AA section view.
[0010] Figure 3 It is a schematic diagram of the structure of the jacket.
[0011] Figure 4 yes Figure 3 CC section view in .
[0012] Figure 5 Schematic diagram of the position of the jacket on the detector.
[0013] Figure 6 It is a schematic diagram of the ball path of the jacket in contact with the steel ball.
[0014] In the figure: 1 pin B, 2 rod B, 3 cylinder B, 4 cylinder A, 5 spring, 6 rod A, 7 pin A, 8 steel ball A, 9 positioning column, 10 worktable, 11 gasket, 12 through slot, 13 micrometer, 14 gauge rod, 15 through hole, 16 screw, 17 bracket, 18 probe, 19 steel ball B, 20 pillar, 21 outer sleeve, 22 sinker A, 23 hole A, 24 positioning slot A, 25 positioning slot B, 26 hole B, 27 sinker B, 28 inner hole, 29 outer surface, 30 ballway, 31 reference surface, 32 contact point, 33 top gap, 34 ellipse. DETAILED DESCRIPTION
[0015] The transmission shaft outer shell ball track position detection instrument of the present invention is a detection tool for the ball track position of the transmission shaft outer shell of a car constant velocity universal joint. Figure 1-6The embodiment of the present invention is described. The transmission shaft outer sleeve ball track position detector comprises a workbench 10, the workbench 10 is supported and fixed by a pillar 20, a positioning column 9 and a bracket 17 are fixedly installed on the workbench 10, the positioning column 9 is used to position the outer sleeve 21 of the inspected part, the bracket 17 is used to fix the micrometer 13, a gasket 11 is installed between the workbench 10 and the positioning column 9, the gasket is used to adjust the height position of the outer sleeve of the transmission shaft, the positioning column 9 is provided with a through groove 12, the positioning column 9 on both sides of the through groove is respectively provided with a hole A23, a sink A22 and a hole B26, a sink B27, a rod A6 is slidably connected with the hole A23, one end of the rod A6 is fixedly connected with a steel ball A8, the steel ball A8 is located in the sink A22, the function of the sink A22 is to make way for the steel ball A8 to move, the other end of the rod A6 is provided with a cylinder A4, the cylinder A4 is located in the through groove 12, and the rod A6 is provided with a positioning groove A24. The positioning column 9 is fixed with a pin A7 at a position corresponding to the notch of the positioning groove A24, and the protruding end of the pin A7 is placed in the positioning groove A24. The rod B2 is slidably connected to the hole B26, and one end of the rod B2 is fixedly connected to the steel ball B19, and the steel ball B19 is located in the sink B27. The other end of the rod B2 is provided with a cylinder B3, and the cylinder B3 is placed in the through groove 12 opposite to the cylinder A4. The rod B2 is provided with a positioning groove B25, and the pin B1 is fixedly connected to the positioning column 9, and one end of the pin B1 is located in the positioning groove B25. The through groove 12 is provided with a spring 5, and the spring 5 is sleeved on the cylinder A and the cylinder B3. The bracket 17 is provided with a through hole 15, and the rod 14 of the micrometer 13 passes through the through hole 15, and the relative position between the rod 14 and the bracket 17 is fixed by a screw 16 provided on the through hole 15. The rod 14 is provided with a probe 18, and the probe is opposite to the center line of the positioning column 9.
[0016] The outer sleeve described in the present invention usually has six ball channels 30, and two adjacent ball channels intersect at a certain angle. The outer sleeve is provided with an inner hole 28 and an outer surface 29. The cross-section of the outer sleeve ball channel is an elliptical shape 34. When the steel ball A8 or the steel ball B19 contacts the ball channel of the outer sleeve, it has two contact points 32 with the elliptical ball channel. There is a gap between the steel ball and the elliptical ball channel, which is usually called a top gap 33. The cross-section of the outer sleeve ball channel adopts the elliptical shape 34 for the following purposes: first, the steel ball has two contact points 32 with the elliptical ball channel, which is more stable and wear-resistant; second, the top gap 33 between the steel ball and the elliptical ball channel can facilitate the entry of grease, making the lubrication more sufficient and wear-resistant.
[0017] The working process of the present invention is: the inner hole 28 of the outer sleeve 21 of the transmission shaft is mounted on the positioning column 9, with the reference surface 31 facing downward, and a pair of relative ballways 30 are made to be opposite to the steel ball A8 and the steel ball B19, and the steel ball A8 and the steel ball B19 are in contact with the pair of ballways 30 under the elastic force of the spring A and the spring B5, and the probe 18 of the micrometer 13 is in contact with the outer surface 29 of the outer sleeve, then the pointer reading on the micrometer changes, and the micrometer pointer reading is recorded, the outer sleeve is rotated 180 degrees, and then mounted on the positioning column 9, then the pointer reading on the micrometer changes, and the micrometer pointer reading at this time is recorded, and the difference between the two readings is recorded, similarly, the remaining two pairs of relative ballways are measured according to the above method, and the difference between the other two pairs of ballway measurements is recorded, if the three pairs of differences are within the specified range of the design, the measurement result is qualified, otherwise it is unqualified and needs to be adjusted. The gasket is used to adjust the height of the outer sleeve so that the two steel balls A8 and the steel ball B19 are relative to the center height of the outer sleeve; since the ball path of the outer sleeve is elliptical, it can contact with the steel ball A8 or the steel ball B19 at two points, making the contact more reliable and stable and the measurement value more accurate.
Claims
1. Transmission shaft outer shell ball track position detector, characterized by: The invention comprises a support column (20) and a workbench (10), wherein the support column is fixedly connected to the workbench, and a positioning column (9) and a bracket (17) are fixedly mounted on the workbench (10), wherein the positioning column (9) is provided with a through groove (12), and a hole A (23) and a sink A (22) are provided on the positioning column (9) on one side of the through groove (12), and a hole B (26) and a sink B (27) are provided on the positioning column (9) on the other side of the through groove (12); a rod A (6) is slidably mounted in the hole A (23), one end of the rod A (6) is placed in the sink A (22) and fixedly connected to the steel ball A (8), and a cylinder A (4) is provided at the other end of the rod A (6), and the cylinder A (4) is placed in the through groove (12), and a positioning groove A (24) is provided on the rod A (6), and a pin A (7) is fixedly mounted on the positioning column (9), and the protruding end of the pin A (7) is placed in the positioning groove A (24); and a rod A (6) is slidably mounted in the hole A (23), and one end of the rod A (6) is placed in the sink A (22) and fixedly connected to the steel ball A (8), and a cylinder A (4) is provided at the other end of the rod A (6), and the cylinder A (4) is placed in the through groove (12), and a positioning groove A (24) is provided on the rod A (6), and a pin A (7) is fixedly mounted on the positioning column (9), and the protruding end of the pin A (7) is placed in the positioning groove A (24); and a rod A (6) is slidably mounted in the hole B (26) and a cylinder A (4) is provided at the other end of the rod A (6), and the cylinder A (4) is placed in the through groove (12). A rod B (2) is provided with a sliding connection, one end of the rod B (2) is placed in a sink B (27) and fixedly connected to a steel ball B (19), the other end of the rod B (2) is provided with a cylinder B (3), the cylinder B (3) is placed in a through groove (12) and opposite to the cylinder A (4), the rod B (2) is provided with a positioning groove B (25), the positioning column (9) is fixedly connected with a pin B (1), and the protruding end of the pin B (1) is placed in the positioning groove B (25); the through groove (12 ) contains a spring (5), which is mounted on the cylinder A (4) and the cylinder B (3); the bracket (17) is provided with a through hole (15), the dial gauge (13) rod (14) passes through the through hole (15), the relative position between the dial gauge rod (14) and the bracket (17) is fixed by a screw (16) provided on the through hole (15), and the dial gauge rod (14) is provided with a probe (18), which is opposite to the center line of the positioning column (9).
2. The transmission shaft outer shell ball track position detector according to claim 1, characterized in that: A gasket (11) is installed between the workbench (10) and the positioning column (9).