Detection instrument for outer sphere diameter of transmission shaft retainer

Abstract

A support A, a support B and a positioner are mounted on a working table, a rotating shaft A is fixedly mounted on the support A, a measuring rod A is rotatably connected to the rotating shaft A, a measuring head A is arranged at one end of the measuring rod A, a rotating shaft B is mounted on the support B, a measuring rod B is rotatably connected to the rotating shaft B, and a measuring head B is arranged at one end of the measuring rod B. One end of an ejector rod is spirally connected with the measuring rod A (5). A gauge rod of the dial gauge is fastened with a measuring rod B (18), a contact on the dial gauge is in contact with the end face of the ejector rod, the ejector rod and the gauge rod are sleeved with the spring, the positioner (1) is provided with a spherical pit, a through hole, a groove opening A and a groove opening B, the through hole is opposite to a reamed hole in the working table, the measuring head A is located in the groove opening A, the measuring head B is located in the groove opening B, and the ejector rod is sleeved with the spring. And the measuring head A and the measuring head B are opposite to each other through the sphere center of the spherical pit of the positioner. By using the technology, when the outer ball diameter of the retainer is measured, the measurement is convenient, and the detection precision of the outer ball diameter of the retainer can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the measuring instrument of outer ball diameter, concretely is the cage outer ball diameter detector of car constant velocity universal joint transmission shaft fixed end section and moving end section. BACKGROUND

[0002] Car constant velocity universal joint transmission shaft is composed of fixed end section, intermediate shaft and moving end section, wherein, fixed end section is directly connected with the hub of car wheel, moving end section is directly connected with the differential of engine, the power of engine is transmitted to the wheel through differential, moving end section, intermediate shaft, fixed end section and hub, thereby driving the wheel to rotate. Fixed end section is mainly composed of outer ring, cage, steel ball and inner ring; moving end section is mainly composed of outer sleeve, cage, steel ball and inner sleeve, the outer spherical surface of cage cooperates with the inner spherical surface of outer ring or the inner cylindrical surface of outer sleeve, the outer spherical surface of cage is mainly finished by grinding, especially the size precision of the outer spherical surface of the cage of fixed end section is required to be higher, if the size precision of the outer spherical surface of cage is unqualified, the cooperation of the outer spherical surface of cage and the inner spherical surface of outer ring will not meet the technical specification requirement, is easy to wear, shortens the service life of cage and inner ring, and causes abnormal sound. The outer ball diameter of cage is measured by micrometer in the past, but it is not easy to accurately measure the ball diameter through the ball center, there is error in measurement, the measurement time is long, the efficiency is low, and the measurement value is different due to human factors, more importantly, sometimes the value is read wrong, which will lead to batch rejection and waste. Therefore, an instrument for efficiently and conveniently measuring the outer ball diameter of cage and ensuring the measurement accuracy is urgently needed in the processing site. SUMMARY

[0003] The utility model discloses a kind of transmission shaft cage outer ball diameter detectors, using the present technology, when measuring the outer ball diameter of cage, not only convenient measurement, and can guarantee the detection accuracy of the outer ball diameter of cage.

[0004] The utility model discloses a technical scheme is: transmission shaft cage outer ball diameter detector, including support, workbench board, workbench board is solid with support, and the solid mounting of support A, support B, positioner is equipped on workbench board, and the reaming of workbench board is equipped with, the solid mounting of support A is equipped on the rotating shaft A, and the rotating connection of the rotating shaft A is equipped with measuring rod A, and the one end of measuring rod A is equipped with measuring head A, and the other end of measuring rod A is equipped with screw hole, the solid mounting of support B is equipped on the rotating shaft B, and the rotating connection of the rotating shaft B is equipped with measuring rod B, and the one end of measuring rod B is equipped with measuring head B, and the screw rod portion of the one end of the jib is helical and is connected with the screw hole on measuring rod A, and the screw rod portion of the jib is helical and is connected with nut, and the table rod of micrometer passes through the hole on measuring rod B, and the table rod and measuring rod B are fastened by the screw on the hole wall, and the contact of micrometer is contacted with the end surface of the jib, and the spring is sleeved on the jib and the table rod, and is located between measuring rod A and measuring rod B, the solid mounting of positioner is equipped with spherical recess, through -hole, recess mouth A, recess mouth B, and the through -hole is opposite with the reaming on workbench board, and measuring head A is located in recess mouth A, and measuring head B is located in recess mouth B, and measuring head A and measuring head B are opposite through the ball center of the spherical recess of positioner.

[0005] The utility model discloses a principle is: using comparison method, the cage that three coordinate measurement outer ball diameter after meeting the limit sample requirement is marked as cage limit sample, and two cage limit samples are put into the spherical recess of positioner respectively, make measuring head A and measuring head B contact with cage limit sample outer spherical surface respectively, then micrometer pointer reading has the change, and the pointer range corresponding to two cage limit samples is marked respectively, take down cage limit sample, and put the cage to be measured into the spherical recess of positioner, and make measuring head A and measuring head B contact with the outer spherical surface of cage, then micrometer pointer reading has the change, if micrometer pointer reading is in the range marked, and the outer ball of cage is qualified, otherwise unqualified needs adjustment.

[0006] The utility model discloses an advantage is: can fast and accurately measure the cage outer ball diameter value, not only high efficiency, and the measurement result is reliable, avoids the occurrence of batch rejects, the spherical recess of positioner and the outer spherical surface of cage coincide, and measuring head A and measuring head B are opposite through the ball center of the spherical recess, can accurately measure the ball diameter through the ball center of cage outer spherical surface, avoids the influence of human factors. ACCURACY

[0007] Figure 1 It is the structure schematic diagram of transmission shaft cage outer ball diameter detector of the utility model.

[0008] Figure 2 It is Figure 1 A-A cross -section view of.

[0009] Figure 3 It is the structure schematic diagram of cage.

[0010] Figure 4 is Figure 3 a top view.

[0011] Figure 5 is a schematic diagram of the working state of the transmission shaft retainer outer ball diameter detector.

[0012] In the figure: 1 positioner, 2 spherical recess, 3 groove A, 4 measuring head A, 5 measuring rod A, 6 support A, 7 rotating shaft A, 8 nut, 9 threaded hole, 10 top rod, 11 spring, 12 contact, 13 screw, 14 table rod, 15 micrometer, 16 rotating shaft B, 17 support B, 18 measuring rod B, 19 measuring head B, 20 groove B, 21 through hole, 22 support column, 23 workbench plate, 24 counterbore, 25 inner spherical surface, 26 outer spherical surface, 27 window. DETAILED DESCRIPTION

[0013] The transmission shaft retainer outer ball diameter detector is particularly a retainer outer ball diameter detector for the fixed end and the moving end of the constant velocity universal joint transmission shaft of a car. The retainer is a thin-walled part, has an inner spherical surface 25 and an outer spherical surface 26, and usually has six or eight windows 27 for keeping the steel ball on the same section. The inner wall shape of the spherical recess 2 on the positioner is designed to be consistent with the shape of the outer spherical surface 26 of the retainer, and the measuring head A and the measuring head B are opposite through the spherical center of the spherical recess, so that the ball diameter through the spherical center of the outer spherical surface of the retainer can be accurately measured. The technical scheme of the detector of the utility model is shown in the attached drawings. Figures 1-5, including the pillar 22, the workbench plate 23, the support A6, the support B17, the positioner 1, the workbench plate 23 is fixedly connected with the pillar 22, the workbench plate 23 is fixedly connected with the support A6, the support B17, the positioner 1, the workbench plate 23 is provided with the counterbore 24, the support A6 is fixedly connected with the rotating shaft A7, the rotating shaft A7 is provided with the rotatably connected measuring rod A5, one end of the measuring rod A5 is provided with the measuring head A4, the other end of the measuring rod A5 is provided with the threaded hole 9, the support B17 is fixedly connected with the rotating shaft B16, the rotating shaft B16 is provided with the rotatably connected measuring rod B18, one end of the measuring rod B18 is provided with the measuring head B19, the screw rod part of the one end of the ejector rod 10 is screw-connected with the threaded hole 9 on the measuring rod A5, the nut 8 is screw-connected with the screw rod part of the ejector rod 10, the dial rod 14 of the micrometer 15 passes through the hole on the measuring rod B18, and the dial rod 14 is fixedly connected with the measuring rod B18 by the screw 13 passing through the hole wall on the measuring rod B18, the contact 12 on the micrometer 15 is in contact with the end surface of the ejector rod 10, the spring 11 is sleeved on the ejector rod 10 and the dial rod 14 and is located between the measuring rod A5 and the measuring rod B18, the positioner 1 is provided with the spherical recess 2, the through hole 21, the recess A3 and the recess B20, the through hole 21 is opposite to the counterbore 24 on the workbench plate 23, the measuring head A4 is located in the recess A3, the measuring head B19 is located in the recess B20, and the measuring head A4 and the measuring head B19 are opposite to the spherical center of the spherical recess 2 of the positioner. The through hole 21 and the counterbore 24 facilitate the dirt to fall down through the counterbore 24 from the through hole 21 when the inner surface of the spherical recess 2 is cleaned, and the spring functions that the measuring rod A5 and the measuring rod B18 are respectively rotated around the rotating shaft A7 and the rotating shaft B16, and the spring force can make the measuring rod A5 and the measuring rod B18 return to the position and be in contact with the end surfaces of the recess A3 and the recess B20, so that the measuring head A4 and the measuring head B19 are in the working measurement state.

[0014] The working process of the utility model is: first, mark the holder that the outer ball diameter value of three coordinate measurement meets the requirement of limit sample as holder limit sample, and put two holder limit samples into the spherical recess 2 of the positioner 1 respectively, and make the outer spherical surface 26 of the holder limit sample contact with the spherical recess 2, make the measuring head A4 and the measuring head B19 contact with the outer spherical surface 26 of the holder limit sample respectively, when the position of the measuring rod A5 and the measuring rod B18 changes, the contact 12 and the two measuring rods produce relative movement to make the pointer reading of the micrometer 15 change, after marking the pointer reading range corresponding to the two holder limit samples, take down the holder limit sample, put the holder to be measured into the spherical recess of the positioner, and make the outer spherical surface 26 of the holder contact with the spherical recess 2, make the measuring head A4 and the measuring head B19 contact with the outer spherical surface 26 of the holder, then the pointer reading of the micrometer 15 changes, if the pointer reading of the micrometer 15 is in the marked range, the outer ball diameter of the measured point of the holder is qualified, otherwise, it needs to be adjusted. In the spherical recess 2, the holder can be rotated, and the outer ball diameter to be measured at any position can be measured, only the two points to be measured and the measuring head A4 and the measuring head B19 need to be contacted.

Claims

1. A drive shaft cage outer ball diameter tester characterized by: The utility model relates to a kind of measuring devices, including support (22), workbench plate (23), workbench plate (23) is fixedly connected with support (22), workbench plate (23) is fixed with support A (6), support B (17), positioner (1) on it, workbench plate (23) is equipped with reaming (24), the support A (6) is fixed with rotating shaft A (7) on it, rotating shaft A (7) is equipped with the rotatable connecting measuring rod A (5), one end of measuring rod A (5) is equipped with measuring head A (4), the other end of measuring rod A (5) is equipped with threaded hole (9), the support B (17) is fixed with rotating shaft B (16) on it, rotating shaft B (16) is equipped with the rotatable connecting measuring rod B (18), one end of measuring rod B (18) is equipped with measuring head B (19), screw portion of one end of ejector rod (10) is screw-connected with the threaded hole (9) on measuring rod A (5), nut (8) is screw-connected with the screw portion of ejector rod (10), dial stem (14) of micrometer (15) passes through the hole on measuring rod B (18), dial stem (14) and measuring rod B (18) are fastened by screw (13) being located on the hole wall, contact (12) on micrometer (15) is in contact with the end surface of ejector rod (10), spring (11) is sleeved on ejector rod (10) and dial stem (14), and located between measuring rod A (5) and measuring rod B (18), the positioner (1) is equipped with spherical recess (2), through-hole (21), recess mouth A (3), recess mouth B (20), through-hole (21) is opposite to reaming (24) on workbench plate (23), measuring head A (4) is located in recess mouth A (3), measuring head B (19) is located in recess mouth B (20), and measuring head A (4) and measuring head B (19) are opposite by the ball center of the spherical recess (2) of positioner.

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