On-line measuring tool and method for cross-rod distance of inner gear ring

Abstract

The invention provides an inner gear ring cross-rod distance on-line measuring tool and a measuring method thereof, wherein the measuring tool comprises four gear teeth used for detecting a gear, theincluded angle of the four gear teeth is 90 degrees, and each gear tooth is provided with an installation groove distributed along the radial direction; the four mounting grooves are used for mountinga pair of first measuring units and a pair of second measuring units; the first measuring unit and the second measuring unit are fixedly arranged close to one end surface of the detection gear center; each of the first measuring unit and the second measuring unit comprises a measuring rod, a measuring seat, a permanent magnet, a spring and an electromagnet. According to the invention, the electromagnet loses power to release the permanent magnet, the spring pushes the measuring seat to move along the radial direction, after the equivalent rod abuts against the tooth surface of the inner toothgroove, the fixed displacement values acquired by all the displacement sensors are recorded; finally, the average value of the sum of the fixed displacement values is calculated, which is the cross-rod distance of the inner gear ring. Therefore, rapid on-line measurement of the span rod is realized.

Description

technical field [0001] The invention belongs to the technical field of gear detection, and in particular relates to an on-line measuring tool and a measuring method for the cross rod distance of an inner ring gear. Background technique [0002] In order to ensure the transmission accuracy, it is necessary to detect the span of the inner ring gear during the production process to ensure that the span of each ring gear is within the design tolerance; the span of the ring gear in the prior art is generally The vernier caliper is used for detection, and the detection steps are as follows: First, place two measuring sticks in the two tooth slots of the inner ring gear according to the parity of the gear teeth to be tested, and then operate the vernier clamping teeth to press against the two round rods at the same time ;Finally, read the value indicated by the vernier teeth and compare it with the marked value. [0003] Therefore, the detection method in the prior art not only ne...

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Problems solved by technology

[0003] Therefore, the detection method in the prior art not only needs to operate the vernier teeth and place the round rod, but also has many human factors, and the variance of the measurement results is relatively large, which is not conducive to the use on the assembly line.

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