Detection instrument for different sections of transmission shaft outer sleeve fairway spacing
By designing a detector for different cross-sections of the ball track spacing on the drive shaft outer sleeve, and utilizing a stepped sliding column and transmission components with sliding connection, the problems of low efficiency and insufficient accuracy in detecting the ball track spacing on the outer sleeve were solved, achieving efficient and accurate measurement results and reducing scrap rate and production stoppage risk.
Patent Information
- Application Number
- CN202520468597.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-18
AI Technical Summary
In existing technologies, the detection efficiency and accuracy of different cross-sections of the ball track spacing on the outer sleeve of a car driveshaft are low, leading to potential quality problems and production stoppage risks.
A tester for measuring the difference in the spacing between the outer and inner lanes of a drive shaft was designed. By using a stepped sliding column and a transmission assembly that are slidably connected, combined with a dial indicator, the dimensional difference in the spacing between the outer and inner lanes can be measured quickly and accurately.
It enables efficient and accurate measurement of different cross sections of the outer lane spacing, reduces the scrap rate, avoids potential quality problems and production stoppage risks, and frees up coordinate measuring machine resources.
Smart Images
Figure CN223925655U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the measuring instrument of sedan transmission shaft ball channel spacing, concretely is transmission shaft outer sleeve ball channel spacing different section detector. BACKGROUND
[0002] Sedan constant velocity universal joint transmission shaft is constituted by fixed end section, intermediate shaft and mobile end section, wherein, fixed end section is directly connected with the hub of sedan wheel, mobile end section is directly connected with the differential of engine, the power of engine is transmitted to the wheel through differential, mobile end section, intermediate shaft, fixed end section and hub, thereby driving the wheel rotation. Fixed end section is mainly composed of outer ring, retainer, steel ball and inner ring; mobile end section is mainly composed of outer sleeve, retainer, steel ball and inner sleeve, the ball channel of outer sleeve is matched with the ball channel of inner sleeve through steel ball, the ball channel of outer sleeve is completed through hard milling, broaching or grinding finishing, the precision requirement is higher, if the size difference of outer sleeve ball channel spacing different section detection is unqualified, it shows that the relative ball channel taper of outer sleeve is out of tolerance, which will cause the cooperation of outer sleeve ball channel and inner sleeve ball channel not to meet the technical specification requirement, resulting in excessive gap at one end, abnormal noise and wear, and shortening the service life of outer sleeve. The ball channel spacing different section detection of outer sleeve in the past adopts three coordinate measurement, but the measurement beat is long, the efficiency is low, the production needs to stop production and wait for the measurement result of three coordinate, and three coordinate resources are occupied, which is a waste; at the same time, a considerable part of enterprises think that the ball channel position degree of outer sleeve is ensured through program processing or clamp, in fact, with the change of equipment precision, the wear and adjustment error of clamp, the wear of cutting tool and other conditions, the size difference of outer sleeve ball channel spacing different section detection exists out of tolerance, and it is a potential defect difficult to find, which will directly cause the excessive gap at one end of mobile end section assembly, abnormal noise, and need to stop production and wait for the solution of the problem. Therefore, an instrument for efficiently measuring the size difference of outer sleeve ball channel spacing different section and ensuring the measurement accuracy is urgently needed in the processing site. SUMMARY
[0003] The utility model discloses a kind of transmission shaft outer sleeve ball channel spacing different section detectors, using the present technology, when the size difference of outer sleeve ball channel spacing different section is measured, not only convenient adjustment, efficiency is high, and can guarantee the detection accuracy of outer sleeve ball channel spacing different section size difference.
[0004] The utility model discloses a technical scheme: transmission shaft outer sleeve ball channel spacing different section detector, the workbench board is equipped with big cylinder hole and coaxial small cylinder hole, and the big and small cylinder hole is equipped with the sliding connection's ladder sliding column, and the big cylinder hole is equipped with spring A, and spring A is sleeved on the ladder sliding column, and the upper end of spring A is pressed to the ladder end surface of ladder sliding column, and the lower end of spring A is pressed to the ladder end surface of big cylinder hole, and the lower end surface of ladder sliding column is fixedly connected with the stopper, and the stopper is placed under the workbench board, and the upper end surface of ladder sliding column is fixedly connected with the upper cover, and the upper end surface of ladder sliding column is equipped with semicircular groove B, and the lower end surface of upper cover is equipped with semicircular groove A, and the space surrounded by semicircular groove B and semicircular groove A is equipped with the sliding connection's horizontal column sleeve, and one end of horizontal column sleeve is fixedly installed with connecting rod B, and the other end of connecting rod B is fixedly connected with steel ball B outside horizontal column sleeve, and the other end of horizontal column sleeve is equipped with the sliding connection's connecting rod A, and the other end of connecting rod A is fixedly connected with steel ball A outside horizontal column sleeve, and the ladder sliding column is equipped with inner hole, and the inner hole is equipped with longitudinal column sleeve, and the gap between inner hole and longitudinal column sleeve is equipped, and longitudinal column sleeve is communicated with horizontal column sleeve and is fixedly connected perpendicularly, and longitudinal column sleeve and horizontal column sleeve are equipped with transmission assembly, and the dial gauge is arranged below longitudinal column sleeve, and the dial gauge's dial stem is fixedly installed in longitudinal column sleeve, and the contact of dial gauge is in contact with the lower end surface of transmission assembly, and the vertical surface of transmission assembly upper end is in contact with connecting rod A.
[0005] The side of the workbench board is equipped with sliding groove, and the sliding groove includes communicating vertical groove, horizontal groove A and horizontal groove B.
[0006] The ladder sliding column is sleeved with gasket, and the gasket is fixedly connected with the workbench board.
[0007] The both sides of the top of the ladder sliding column are equipped with sunken nest A and sunken nest B, and steel ball A is located in sunken nest A, and steel ball B is located in sunken nest B.
[0008] The utility model discloses a principle is: the outer sleeve is sleeved on the ladder sliding column, makes the datum surface contact with the gasket downward, the handle is located the upper end of vertical groove, makes the U-U measurement section of outer sleeve ball channel coincide with the ball center line of steel ball A and steel ball B, under the action of spring built-in in the transverse column sleeve, steel ball A and steel ball B move and are in close contact with this pair of ball channel, and there is relative motion between steel ball A and steel ball B, then the pointer reading of dial gauge changes, and the pointer reading of dial gauge is recorded, press down the handle and put the handle into horizontal groove A, and steel ball A and steel ball B move down a distance along with the ladder sliding column, at this time, the ball center line of steel ball A and steel ball B is located on the O-O measurement section of outer sleeve ball channel, and the pointer reading of dial gauge is recorded, press down the handle and put the handle into horizontal groove B, and steel ball A and steel ball B move down a distance along with the ladder sliding column, at this time, the ball center line of steel ball A and steel ball B is located on the D-D measurement section of outer sleeve ball channel, and the pointer reading of dial gauge is recorded, if the difference of three times measurement is in the specified range of design, then the measurement result is qualified, otherwise unqualified and needs adjustment. Other two pairs of relative ball channels of outer sleeve are measured according to the same method above.
[0009] The utility model discloses the advantages are: can fast and accurately measure the size difference of different sections of outer sleeve ball channel spacing, not only high efficiency, and the measurement result is reliable, reduces the scrap rate, and liberates three coordinates. ACCURACY
[0010] Figure 1 It is the structure schematic diagram of transmission shaft outer sleeve ball channel spacing detection instrument of the utility model.
[0011] Figure 2 It is Figure 1 The top view of.
[0012] Figure 3 It is Figure 2 The D-D direction section view of.
[0013] Figure 4 It is the structure schematic diagram of outer sleeve.
[0014] Figure 5 It is Figure 4 The C-C direction section view of.
[0015] Figure 6 It is Figure 4 The B-B direction section view of.
[0016] Figure 7 It is Figure 3 The A-A direction section view of.
[0017] Figure 8 It is the structure schematic diagram when outer sleeve ball channel and steel ball contact.
[0018] Figure 9 Figure 3 is a position diagram of the transmission shaft sleeve on the detector of the utility model.
[0019] Figure 10 Figure 4 is a top view of the detector of the utility model.
[0020] Figure 11 Figure 5 is a structure diagram of the transmission assembly installed in the longitudinal column sleeve and the transverse column sleeve.
[0021] In the figure: 1 support column, 2 workbench plate, 3 horizontal groove A, 4 vertical groove, 5 gasket, 6 stepped sliding column, 7 steel ball A, 8 connecting rod A, 9 transverse column sleeve, 10 upper cover, 11 screw, 12 connecting rod B, 13 steel ball B, 14 handle, 15 horizontal groove B, 16 longitudinal column sleeve, 17 dial gauge, 18 stop block, 19 small cylindrical hole, 20 large cylindrical hole, 21 sunken A, 22 sunken B, 23 inner hole, 24 ball channel, 25 reference surface, 26 U-U measurement cross section, 27 O-O measurement cross section, 28 D-D measurement cross section, 29 semicircular groove A, 30 semicircular groove B, 31 contact point, 32 top gap, 33 oval, 34 sleeve inner hole, 35 spring A, 36 dial rod, 37 contact head, 38 spring B, 39 transmission rod, 40 rotating shaft, 41 equal-arm right-angle lever, 42 spring C. DETAILED DESCRIPTION
[0022] The transmission shaft sleeve ball channel spacing different section detector of the utility model, the following is explained in combination with the drawings, including workbench plate 2, the lower surface of workbench plate 2 is fixedly connected with support column 1, workbench plate 2 is equipped with small cylindrical hole 19 and large cylindrical hole 20 that are communicated, the center lines of the two cylindrical holes coincide, stepped sliding column 6 is composed of a large cylinder and a small cylinder, the small cylinder is slidingly connected in small cylindrical hole 19, the large cylinder is slidingly connected in large cylindrical hole 20, spring A 35 is sleeved on the small cylinder of stepped sliding column 6 and is located in large cylindrical hole 20, the upper end of spring A is pressure-bonded with the stepped end surface of stepped sliding column, the lower end of spring A is pressure-bonded with the stepped end surface of large cylindrical hole, and the spring A 35 is limited by the two end surfaces; the lower end surface of the small cylinder of stepped sliding column 6 is fixedly connected with stop block 18, stop block 18 is placed below the workbench plate, and the lower end of spring A is limited by stop block 18. ElasticityThe block 18 is in pressure contact with the workbench plate under the action of the step sliding column; the upper end surface of the step sliding column is fixedly connected with the upper cover 10 through the screw 11, the lower end surface of the upper cover 10 is provided with a semicircular groove A 29, the upper end surface of the step sliding column 6 is provided with a semicircular groove B 30, and the semicircular groove B 30 and the semicircular groove A 29 are surrounded by a space, and the slidingly connected transverse column sleeve 9 is arranged in the space; the step sliding column 6 is provided with an inner hole 23, the longitudinal column sleeve 16 is arranged in the inner hole 23, and a gap is arranged between the longitudinal column sleeve and the inner hole; the longitudinal column sleeve 16 is in communication with the transverse column sleeve 9 and is fixedly connected with the transverse column sleeve 9 perpendicularly, and the longitudinal column sleeve 16 and the transverse column sleeve 9 are internally provided with a transmission assembly; the transmission assembly comprises a spring B 38, a transmission rod 39, a rotating shaft 40, an equal-arm right-angle lever 41 and a spring C 42, the rotating shaft is fixedly connected with the transverse column sleeve 9, the equal-arm right-angle lever is rotatably connected with the rotating shaft, the bottom surface of the equal-arm right-angle lever is in contact with the upper end surface of the transmission rod, the spring B is sleeved on the transmission rod, one end of the spring B is in pressure contact with the boss of the transmission rod, and the other end of the spring B is in pressure contact with the boss of the inner wall of the longitudinal column sleeve, the spring C is sleeved on the connecting rod A 8, one end of the spring C is in pressure contact with the boss of the connecting rod A, and the other end of the spring C is in pressure contact with the boss of the inner wall of the transverse column sleeve; the dial gauge 17 is arranged below the longitudinal column sleeve 16, the dial rod of the dial gauge is fixedly arranged in the longitudinal column sleeve 16, the contact 37 of the dial gauge is in contact with the lower end surface of the transmission rod of the transmission assembly, and the vertical surface of the equal-arm right-angle lever of the transmission assembly is in contact with the connecting rod A 8. The spring B can make the transmission rod always in contact with the equal-arm right-angle lever, under the action of the spring C, the steel ball A 7 and the steel ball B 13 are in close contact with the ball channel, and the gap designed between the longitudinal column sleeve and the inner hole provides a moving space for the transverse column sleeve.
[0023] The step sliding column 6 is sleeved with a gasket 5, the gasket is fixedly connected with the workbench plate, and the gasket 5 can be designed to be of different thicknesses; according to the need, the gasket 5 of different thicknesses is selected to be placed on the workbench plate, so as to adjust the height of the sleeve on the detector.
[0024] The side surface of the workbench plate is provided with a sliding groove, the sliding groove comprises communicating vertical grooves 4, horizontal grooves A 3 and horizontal grooves B 15, the sliding groove is internally provided with a handle 14 which is movably connected, one end of the handle is fixedly connected with the step sliding column, and the other end of the handle is arranged outside the workbench plate; the initial position of the handle in the sliding groove is located at the upper portion of the vertical groove 4, and this position is the position where the center line of the steel ball A 7 and the steel ball B 13 coincides with the U-U measuring section 26 of the sleeve ball channel 24; the handle 14 can be pressed downward to measure other sections of the sleeve ball channel, such as the O-O measuring section 27 of the sleeve ball channel and the D-D measuring section 28 of the sleeve ball channel; the handle can be pressed downward to make the sleeve reference surface 25 always in contact with the gasket 5, so as to ensure the accuracy of the measured value.
[0025] The top of the step sliding column 6 is provided with a sunken nest A 21 and a sunken nest B 22 on both sides, and the two sunken nests are used to make the steel ball A located in the sunken nest A and the steel ball B located in the sunken nest B, so as to provide a space for the movement of the steel ball A and the steel ball B.
[0026] The outer sleeve generally has six ball tracks 24, two adjacent ball tracks intersect at an angle, the outer sleeve is provided with an inner hole 34 of the outer sleeve, a reference surface 25, the cross section of the ball track of the outer sleeve is an ellipse 33, when the steel ball A7 or the steel ball B13 contacts with the ball track 24 of the outer sleeve, there are two contact points 31 between the steel ball and the ball track of the ellipse 33, there is a gap between the steel ball and the ball track of the ellipse 33, generally called a top gap 32, the cross section of the ball track 24 of the outer sleeve adopts the ellipse 33, which has the following effects: firstly, the two contact points 31 between the steel ball and the ball track of the ellipse 33 are more stable and wear-resistant, and secondly, the top gap 32 between the steel ball and the ball track of the ellipse 33 can facilitate the entry of lubricating grease, so that the lubrication is more sufficient and wear-resistant.
[0027] The working process of the utility model is as follows: the outer sleeve to be measured is sleeved on the stepped sliding column 6, so that the reference surface 25 is downwardly contacted with the gasket 5, at this time, a pair of opposite ball tracks U-U measurement sections 26 of the outer sleeve are coincided with the center line of the steel ball A7 and the steel ball B13, the U-U measurement of the ball track of the outer sleeve is the initial measurement position, under the action of the spring C, the steel ball A7 and the steel ball B13 are tightly contacted with the measured section of the ball track, the steel ball A7 and the steel ball B13 have relative movement, then the pointer reading of the dial gauge 17 is changed, the pointer reading of the dial gauge 17 is recorded, the handle 14 is pressed downwardly and placed in the horizontal groove A3, the steel ball A7 and the steel ball B13 move downwardly along with the stepped sliding column 6 by a distance, at this time, the center line of the steel ball A7 and the steel ball B13 is located on the O-O measurement section 27 of the ball track of the outer sleeve, the pointer reading of the dial gauge 17 is recorded, the handle 14 is pressed downwardly and placed in the horizontal groove B15, the steel ball A7 and the steel ball B13 move downwardly along with the stepped sliding column 6 by a distance, at this time, the center line of the steel ball A7 and the steel ball B13 is located on the D-D measurement section 28 of the ball track of the outer sleeve, the pointer reading of the dial gauge 17 is recorded, if the difference of three times of measurement is within the specified range, the measurement result is qualified, otherwise, it is unqualified and needs to be adjusted. The other two pairs of opposite ball tracks of the outer sleeve are measured by the same method as above… When the distance measurement between different sections of a pair of opposite ball tracks of the outer sleeve is completed, the handle 14 is moved out of the horizontal groove B15, under the elastic force of the spring A35, the handle 14 returns to the top of the vertical groove 4, and then the measurement of the next pair of ball tracks is carried out… During the whole measurement process, the handle 14 is pressed downwardly, so that the reference surface 25 of the outer sleeve is always contacted with the gasket 5, and the measurement value is ensured to be accurate.
Claims
1. A drive shaft sleeve ball lane spacing different section detector, characterized in that: The workbench plate (2) is provided with a large cylindrical hole (20) and a coaxial small cylindrical hole (19), and a sliding connection stepped sliding column (6) is arranged in the large and small cylindrical holes. A spring A (35) is arranged in the large cylindrical hole, the spring A is sleeved on the stepped sliding column, the upper end of the spring A is pressed against the stepped end surface of the stepped sliding column, the lower end of the spring A is pressed against the stepped end surface of the large cylindrical hole, the lower end surface of the stepped sliding column is fixedly connected with a stop block (18), the stop block is arranged below the workbench plate, the upper end surface of the stepped sliding column is fixedly connected with an upper cover (10), a semicircular groove B (30) is arranged on the upper end surface of the stepped sliding column, a semicircular groove A (29) is arranged on the lower end surface of the upper cover (10), a sliding connection horizontal column sleeve (9) is arranged in the space surrounded by the semicircular groove B and the semicircular groove A, a connecting rod B (12) is fixedly arranged in one end of the horizontal column sleeve, the other end of the connecting rod B is fixedly connected with a steel ball B (13) outside the horizontal column sleeve, a connecting rod A (8) is slidingly arranged in the other end of the horizontal column sleeve, the other end of the connecting rod A is fixedly connected with a steel ball A (7) outside the horizontal column sleeve, an inner hole (23) is arranged in the stepped sliding column (6), a vertical column sleeve (16) is arranged in the inner hole, a gap is arranged between the inner hole and the vertical column sleeve, the vertical column sleeve (16) is fixedly connected with the horizontal column sleeve (9) in a perpendicular manner, a transmission assembly is arranged in the vertical column sleeve (16) and the horizontal column sleeve (9), a dial gauge is arranged below the vertical column sleeve (16), a dial gauge rod is fixedly arranged in the vertical column sleeve (16), a contact (37) of the dial gauge is in contact with the lower end surface of the transmission assembly, and a vertical surface of the upper end of the transmission assembly is in contact with the connecting rod A (8).
2. The instrument of claim 1, wherein: A sliding groove is arranged on the side surface of the workbench plate (2), the sliding groove comprises a vertical groove (4), a horizontal groove A (3) and a horizontal groove B (15) which are communicated, and a handle (14) is slidingly arranged in the sliding groove, one end of the handle is fixedly connected with the stepped sliding column, and the other end of the handle is arranged outside the workbench plate, and the handle is located at the upper portion of the vertical groove (4) in the initial position of the sliding groove.
3. The instrument of claim 1, wherein: A gasket (5) is sleeved on the stepped sliding column (6), and the gasket (5) is fixedly connected with the workbench plate (2).
4. The drive shaft outer bushing ball lane spacing variable cross section detector of claim 1, wherein: Sinks A (21) and sinks B (22) are arranged on the top of the stepped sliding column (6), the steel ball A is arranged in the sink A, and the steel ball B is arranged in the sink B.