A Method for Measuring the Tooth Profile of Contact Involute Worm
A measurement method, the involute technology, applied in the field of precision measurement, can solve the problem that the contact measurement of involute worm tooth profile cannot be completed, and achieve the effect of reliable results and high measurement efficiency
Inactive Publication Date: 2017-11-21
XIAN TECH UNIV
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Problems solved by technology
[0004] On the basis of not adding any hardware facilities, the present invention aims to solve the problem that the contact measurement of involute worm tooth profile cannot be completed under the condition of interference
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[0030] The present invention will be described in detail below with reference to the drawings and embodiments.
[0031] see figure 1 with figure 2 . figure 1 The mid-section 1 is located on the section of the worm shaft, and the section 2 is located on the tangent plane of the base cylinder. figure 2 It is a schematic diagram of the measurement interference of the upper tooth surface of an involute worm. In the measurement coordinate system, the Z-direction coordinate of the measurement starting point of the upper tooth surface is 65.07mm, and the lowest Z of the lower tooth surface of the same tooth alveolar in the base cylinder tangent plane is The axial coordinate is 67.52mm, and the axial distance between two points is 2.45mm. Due to the range limitation of the micro-displacement sensor, it is necessary to reserve a certain margin when entering the starting point of tooth shape measurement. If the diameter of the measuring ball is greater than 2mm, when the micro-dis...
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The invention brings forward a measuring method of a contact type involute worm tooth profile. The axial section of an involute worm is non-linear, and, when the axial section of the involute worm is measured, the measurement section of the involute worm, i.e., a straight generatrix is located on a base cylinder tangent plane. An interference is generated because the axial distance between a tooth profile measurement start point and the highest (lowest) point of a tooth face on the other side of the same tooth slot is small, and then a measuring ball or a measuring rod interferes with the tooth face on the other side in the process that a measuring head enters the measurement start point; and a measuring needle is damaged, and tooth profile measurement cannot be completed. According to the measuring method, provided in the invention, of the contact type involute worm tooth profile, the tooth profile measurement is performed at a position of the axial section of the involute worm, a traditional base circle tangent plane position tooth profile measuring method is replaced, and an interference phenomenon can be effectively eliminated; the measuring method of the contact type involute worm tooth profile has the advantages of high measuring efficiency, the reliable result, simplified measuring actions and the simple implementation process; and the measuring method of the contact type involute worm tooth profile provides a new train of thought for the complex cutter measuring technology.
Description
technical field [0001] The invention belongs to the technical field of precision measurement, in particular to a method for measuring the tooth profile of a contact-type involute worm. Background technique [0002] Worms are divided into linear worms and nonlinear worms. The involute worm belongs to the linear worm, and its end surface section is an involute, and the axial section is a space curve. In actual testing, the axial section cannot be used for error calculation and error evaluation. The detection position of the traditional contact involute worm tooth profile is on the tangent plane of the base cylinder, the intersection line formed by the tangent plane of the base cylinder and the tooth surface of the gear tooth is the straight generatrix of the involute worm, and the included angle with the end section is the base Cylinder helix angle. The specific measurement includes the following steps: ① Position the workpiece and establish a measurement coordinate system. ...
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IPC IPC(8): G01B21/20
Inventor 祝强卢春霞徐臻李少康张新华陈晓东王晓丽王建华
Owner XIAN TECH UNIV