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 invention relates to an instrument for measuring outer ball diameter, in particular to an instrument for detecting outer ball diameter of a retaining frame of a fixed end section and a movable end section of a transmission shaft of a car constant velocity universal joint. 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 outer spherical surface of the retainer is matched with the inner spherical surface of the outer ring or the inner cylindrical surface of the outer sleeve. The outer spherical surface of the retainer is mainly completed by grinding finishing. In particular, the outer spherical surface of the retainer of the fixed end joint has a high dimensional accuracy requirement. If the dimensional accuracy of the outer spherical surface of the retainer is unqualified, the outer spherical surface of the retainer and the inner spherical surface of the outer ring will not meet the technical specifications, which is easy to wear, shortening the service life of the retainer and the inner ring, and causing abnormal noise. In the past, the outer ball diameter of the cage was measured with a micrometer, but it is not easy to accurately measure the ball diameter passing through the center of the ball, the measurement has errors, the measurement time is long, the efficiency is low, and the measured values ​​are different due to human factors. More importantly, sometimes the wrong value is read, which will lead to batch scrapping and great waste. Therefore, an instrument that can measure the outer ball diameter of the cage efficiently and conveniently and can ensure the 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 outer ball diameter detector. When the outer ball diameter of the retainer is measured by using the present technology, it is not only convenient to measure, but also can ensure the detection accuracy of the outer ball diameter of the retainer.

[0004] The technical scheme of the present invention is: a transmission shaft retainer outer ball diameter detector, comprising a pillar, a workbench, the workbench is fixedly connected to the pillar, a bracket A, a bracket B, and a positioner are fixedly installed on the workbench, a reamer is provided on the workbench, a rotating shaft A is fixedly installed on the bracket A, a rotating shaft A is equipped with a rotatably connected measuring rod A, one end of the measuring rod A is provided with a measuring head A, and the other end of the measuring rod A is provided with a threaded hole, a rotating shaft B is fixedly installed on the bracket B, a rotatably connected measuring rod B is equipped on the rotating shaft B, one end of the measuring rod B is provided with a measuring head B, and a screw portion at one end of the top rod is connected to the measuring rod A. The threaded hole is spirally connected, the nut is spirally connected to the screw part of the push rod, the dial rod of the micrometer passes through the hole on the measuring rod B, the dial rod and the measuring rod B are fastened by screws arranged on the hole wall, the contact on the micrometer contacts the end face of the push rod, the spring is sleeved on the push rod and the dial rod, and is located between the measuring rods A and B. The positioner is provided with a spherical socket, a through hole, a groove opening A, and a groove opening B. The through hole is opposite to the expanded hole on the workbench, the probe A is located in the groove opening A, the probe B is located in the groove opening B, and the probes A and B are opposite to each other through the center of the spherical socket of the locator.

[0005] The principle of the present invention is: using the comparison method, a retainer that meets the requirements of the limit sample after three-coordinate measurement of the outer spherical diameter is burned with a mark as a retainer limit sample, and two retainer limit samples are respectively placed in the spherical recesses of the positioner, so that the probe A and the probe B are respectively in contact with the outer spherical surface of the retainer limit sample, then the pointer reading of the micrometer changes, and the pointer ranges corresponding to the two retainer limit samples are marked respectively, the retainer limit sample is removed, the retainer to be measured is placed in the spherical recess of the positioner, and the probe A and the probe B are in contact with the outer spherical surface of the retainer, then the pointer reading of the micrometer changes, if the pointer reading of the micrometer is within the marked range, the outer spherical surface of the retainer is qualified, otherwise it is unqualified and needs to be adjusted.

[0006] The advantages of the present invention are that the outer spherical diameter of the cage can be measured quickly and accurately, which is not only efficient but also reliable in measuring results, thus avoiding the occurrence of batch waste. Since the spherical concave socket of the positioner of the instrument matches the outer spherical surface of the cage, the probe A and the probe B are relative through the centers of the spherical concave socket, and the diameter of the ball passing through the center of the outer spherical surface of the cage can be accurately measured, thus avoiding the influence of human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the transmission shaft retainer outer ball diameter detector of the present invention.

[0008] Figure 2 yes Figure 1 AA section view.

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

[0010] Figure 4 yes Figure 3 Top view of the .

[0011] Figure 5 It is a schematic diagram of the working status of the transmission shaft cage outer ball diameter detector.

[0012] In the figure: 1 locator, 2 spherical socket, 3 groove opening A, 4 probe A, 5 measuring rod A, 6 bracket A, 7 rotating shaft A, 8 nut, 9 threaded hole, 10 push rod, 11 spring, 12 contact, 13 screw, 14 gauge rod, 15 micrometer, 16 rotating shaft B, 17 bracket B, 18 measuring rod B, 19 probe B, 20 groove opening B, 21 through hole, 22 pillar, 23 workbench, 24 expansion hole, 25 inner spherical surface, 26 outer spherical surface, 27 window. DETAILED DESCRIPTION

[0013] The transmission shaft retainer outer ball diameter detector is specifically a retainer outer ball diameter detector for the fixed end section and the movable end section of the transmission shaft of a car constant velocity universal joint. The retainer is a thin-walled part having an inner spherical surface 25 and an outer spherical surface 26, and usually having six or eight windows 27 for keeping the steel balls on the same cross section. The inner wall shape of the spherical recess 2 on the positioner of the present invention is designed to match the shape of the outer spherical surface 26 of the retainer. The probe A and the probe B are opposite to each other through the center of the spherical recess, and the ball diameter passing through the center of the outer spherical surface of the retainer can be accurately measured. The technical scheme of the detector of the present invention is shown in the attached drawings. Figure 1-5, including a pillar 22 and a workbench 23, the workbench 23 is fixedly connected to the pillar 22, a bracket A6, a bracket B17, and a positioner 1 are fixedly mounted on the workbench 23, a reamer 24 is provided on the workbench 23, a rotating shaft A7 is fixedly mounted on the bracket A6, a measuring rod A5 rotatably connected is mounted on the rotating shaft A7, a measuring head A4 is provided at one end of the measuring rod A5, and a threaded hole 9 is provided at the other end of the measuring rod A5, a rotating shaft B16 is fixedly mounted on the bracket B17, a measuring rod B18 rotatably connected is mounted on the rotating shaft B16, a measuring head B19 is provided at one end of the measuring rod B18, a screw portion at one end of the push rod 10 is spirally connected to the threaded hole 9 on the measuring rod A5, and a nut 8 is connected to the screw portion of the push rod 10 Screw connection, the dial rod 14 of the micrometer 15 passes through the hole on the measuring rod B18, and the screw 13 passes through the hole wall on the measuring rod B18 to fix the dial rod 14 with the measuring rod B18, the contact 12 on the micrometer 15 contacts the end face of the push rod 10, the spring 11 is sleeved on the push 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 a spherical socket 2, a through hole 21, a groove opening A3, and a groove opening B20, the through hole 21 is opposite to the expansion hole 24 on the workbench 23, the probe A4 is located in the groove opening A3, the probe B19 is located in the groove opening B20, and the probe A4 and the probe B19 are opposite through the center of the spherical socket 2 of the positioner. The function of the through hole 21 and the expanded hole 24 is to facilitate cleaning of the inner surface of the spherical socket 2, and dirt can easily fall from the through hole 21 through the expanded hole 24; the function of the spring is that after the measuring rod A5 and the measuring rod B18 rotate around the rotating shaft A7 and the rotating shaft B16 respectively, the elastic force of the spring can make the measuring rod A5 and the measuring rod B18 return to their original positions and contact the two end surfaces of the groove opening A3 and the groove opening B20, thereby making the measuring head A4 and the measuring head B19 in a working measuring state.

[0014] The working process of the present invention is as follows: first, a holder whose outer spherical diameter value after three-coordinate measurement meets the requirements of the limit sample is burned with a mark as the holder limit sample, and two holder limit samples are respectively placed in the spherical concave socket 2 of the positioner 1, and the outer spherical surface 26 of the holder limit sample is in contact with the spherical concave socket 2, so that the probe A4 and the probe B19 are respectively in contact with the outer spherical surface 26 of the holder limit sample, when the position of the measuring rod A5 and the measuring rod B18 changes, the contact 12 and the two measuring rods move relative to each other. The pointer reading of the micrometer 15 changes. After marking the pointer reading range corresponding to the two limit samples of the cage, remove the limit sample of the cage, put the cage to be measured into the spherical concave of the positioner, and make the outer spherical surface 26 of the cage contact with the spherical concave 2, and make the probe A4 and the probe B19 contact with the outer spherical surface 26 of the cage, then the pointer reading of the micrometer 15 changes. If the pointer reading of the micrometer 15 is within the marked range, the outer spherical diameter of the measured point of the cage is qualified, otherwise it is unqualified and needs to be adjusted. The cage can be rotated in the spherical concave 2, so the outer spherical diameter of any position can be measured. It only needs to make the two points to be measured contact with the probe A4 and the probe B19.

Claims

1. Transmission shaft cage outer ball diameter detector, characterized by: The invention comprises a support (22) and a workbench (23), wherein the workbench (23) is fixedly connected to the support (22), a bracket A (6), a bracket B (17) and a positioner (1) are fixedly mounted on the workbench (23), a reamer (24) is provided on the workbench (23), a rotating shaft A (7) is fixedly mounted on the bracket A (6), a measuring rod A (5) rotatably connected is mounted on the rotating shaft A (7), a measuring head A (4) is provided at one end of the measuring rod A (5), a threaded hole (9) is provided at the other end of the measuring rod A (5), a rotating shaft B (16) is fixedly mounted on the bracket B (17), a measuring rod B (18) rotatably connected is mounted on the rotating shaft B (16), a measuring head B (19) is provided at one end of the measuring rod B (18), a screw portion at one end of the push rod (10) is spirally connected to the threaded hole (9) on the measuring rod A (5), a nut (8) is screwed to the push rod (10), and a screw thread is screwed to the screw thread of the push rod (10). The screw rod part is spirally connected, the dial rod (14) of the micrometer (15) passes through the hole on the measuring rod B (18), the dial rod (14) and the measuring rod B (18) are fastened by a screw (13) arranged on the hole wall, the contact (12) on the micrometer (15) contacts the end surface of the push rod (10), the spring (11) is sleeved on the push rod (10) and the dial rod (14), and is located between the measuring rod A (5) and the measuring rod B (18), the positioner (1) is provided with a spherical concave socket (2), a through hole (21), a groove opening A (3), and a groove opening B (20), the through hole (21) is opposite to the expansion hole (24) on the workbench (23), the probe A (4) is located in the groove opening A (3), the probe B (19) is located in the groove opening B (20), and the probe A (4) and the probe B (19) are opposite to each other through the spherical center of the spherical concave socket (2) of the positioner.

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