Measurement fixture for profilometer

Abstract

The invention discloses a measurement fixture for a profilometer. A left T-shaped groove and a right T-shaped groove are formed side by side in the top surface of a square bottom board;the head part of a left compression bolt is mounted in the left T-shaped groove, and the rod part of the left compression bolt is sleeved with a positioning bottom board, a positioning mandrel and a left compression nut; a positioning pin boss is fixedly arranged at the rear of the positioning bottom board, and one positioning pin is mounted in an inner hole of the positioning pin boss; the head part of a right compression bolt is mounted in the right T-shaped groove in the square bottom board, and the rod part of the right compression bolt is sleeved with a scale alignment board and a right compression nut, wherein the front side surface of the scale alignment board is attached to the rear side surface of the positioning bottom board; and a dividing rule is parallel to the left end surface of the square bottom board and is fixed with the left end surface of the square bottom board, and the dividing rule is perpendicular to the scale alignment board. The measurement fixture can accurately reflect a reference circle of a gear ring on the scales of the dividing rule, and the pointed part of a measuring head of the profilometer is conveniently and accurately aligned to a corresponding scale on the dividing rule, so that the pointed part of the measuring head of the profilometer can be accurately aligned to the reference circle of the gear ring, and the chamfering angle of the gear ring can be accurately measured.

Description

technical field [0001] The invention belongs to the field of fixtures, and in particular relates to a measuring fixture for a profiler used to assist in measuring the chamfering angle of a single-tooth ring gear. Background technique [0002] As we all know, chamfer angle is one of the important parameters of single tooth ring gear. At present, we generally use a profiler to measure the chamfer angle of a single-tooth ring gear. When measuring, first clamp the outer circle of the ring gear with a flat pliers, and then align the tip of the profiler probe with the ring gear by visual inspection. The index circle, and then read the chamfering angle of the ring gear through the reading of the profiler. However, the pitch circle of the ring gear cannot be seen or touched. It is difficult to ensure that the tip of the profiler probe is aligned with the pitch circle of the ring gear in the existing measurement methods, so that the chamfer angle of the ring gear cannot be accuratel...

AI Technical Summary

Problems solved by technology

However, the pitch circle of the ring gear is invisible and intangible. It is difficult to ensure that the tip of the profiler probe is aligned with the pitch circle of the ring gear in the existing measurement methods, so that the chamfer angle of the ring gear cannot be accurately measured. For this reason urgently need to solve above-mentioned technical problem

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