Rotary measuring mechanism and scanning type connecting rod measuring instrument
A technology of rotating measuring and measuring instrument, applied in measuring devices, instruments, etc., can solve the problems of few sampling points, high cost, inability to respond to processing defects in a timely and accurate manner, and achieve the effect of avoiding batch accidents and comprehensive testing.
Active Publication Date: 2020-08-14
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
The traditional comprehensive detection method is a four-point measurement method, which is positioned by two guide sleeves, and three cross-sectional measuring points are arranged on the circumference of the guide sleeve. Each cross-section has four fixed measuring points, and each measuring point corresponds to a Sensor, put the connecting rod into two guide sleeves for measurement, but this detection method has the disadvantages of few sampling points, high cost, and difficult to guarantee accuracy, and some processing defects cannot be reflected in time and accurately, which increases the occurrence of quality problems. risk
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] Such as figure 1 The rotating measuring mechanism shown includes a mounting frame 101, a rotating motor 103 installed on the bottom plate 102 of the mounting frame 101, an air bearing 107 connected to the rotating motor 103 through a coupling 105, and a measuring device slidably installed on the air bearing 107. The rod mechanism and the slip ring 106 coaxially installed between the shaft coupling 105 and the air bearing 107; figure 2 As shown, the air bearing 107 includes an air bearing outer ring stator 123, an air bearing inner ring rotor 113 and an air intake hole 125, and the signal line of the measuring rod mechanism passes through the central through hole of the air bearing inner ring rotor 113 and connects with the air bearing inner ring rotor 113. The slip ring inner ring rotor 119 of the slip ring 106 is connected w...
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The invention discloses a rotary measuring mechanism comprising a mounting frame, a rotating motor mounted on a bottom plate of the mounting frame, an air bearing connected with the rotating motor through a coupler, a measuring rod mechanism slidably mounted on the air bearing, and a sliding ring coaxially mounted between the coupler and the air bearing. A signal line of the measuring rod mechanism penetrates through a central through hole of an air bearing inner ring rotor of the air bearing and then is connected with a slip ring inner ring rotor lead of the slip ring, and the rotating motordrives a sensor on the measuring mounting rod to perform 360-degree detection, so that circumferential detection of inner holes with different diameters of the connecting rod is realized. The invention further provides a scanning type connecting rod measuring instrument adopting the rotary measuring mechanism, so that one sensor is arranged in each inner hole of the connecting rod, the rotary motor drives the sensor on the measuring mounting rod to perform 360-degree detection and thus circumferential detection of the inner holes of the connecting rod is realized.
Description
technical field [0001] The invention relates to the technical field of engine connecting rod measurement, in particular to a rotating measuring mechanism and a scanning connecting rod measuring instrument. Background technique [0002] In the vehicle engine, the connecting rod is used to connect the crankshaft and the piston. Therefore, the connecting rod plays a very critical role in the operation of the engine. In the mass production process, the quality control of the connecting rod is particularly important. The traditional comprehensive detection method is a four-point measurement method, which is positioned by two guide sleeves, and three cross-sectional measuring points are arranged on the circumference of the guide sleeve. Each cross-section has four fixed measuring points, and each measuring point corresponds to a Sensor, put the connecting rod into two guide sleeves for measurement, but this detection method has the disadvantages of few sampling points, high cost, ...
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IPC IPC(8): G01B21/14G01B21/24
CPCG01B21/14G01B21/24
Inventor 吕鹏刘继斌徐杰吴勉
Owner DONGFENG MOTOR CORP HUBEI