Method for machining and detecting helical gear with key way
A detection method, technology of helical gears, applied in the direction of belts/chains/gears, components with teeth, metal processing equipment, etc., can solve the problems that the gear teeth cannot be found by dial gauge measurement, and helical gears are difficult to measure and operate. Achieve the effect of low cost, simple method and high reliability
Inactive Publication Date: 2010-02-03
宝钢苏冶重工有限公司
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Problems solved by technology
One of the difficulties is that the center line of the gear teeth cannot be found by measuring with a dial indicator on the machine tool when processing keyways and testing
The second difficulty is: it is difficult to measure the helical gear at the middle of the tooth width at a certain distance from the end face of the gear
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Embodiment 1
[0028] The processing and detection method of helical gear with keyway in this embodiment is applied to figure 1 with figure 2 For the part shown, the relevant parameters of the known gear are: number of teeth z, modulus m, diameter of the pitch circle d, helix angle β, the direction of rotation is right (left), and the distance between the value plane and the end plane is L. The gear is a double keyway distributed at 180°, and the included angle (calibrated phase angle) between the centerline of the keyway and the centerline of a certain gear tooth on the evaluation plane is required to be γ 0 °(for convenience, the direction of the γ angle is specified as: starting from the centerline of the gear tooth to the centerline of the keyway, clockwise is positive), and the corresponding arc length on the pitch circle is S 0 , the specific implementation steps are:
[0029] The first step, the calibrated phase angle γ on the evaluation plane 0 Converted into the phase angle γ to...
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The invention belongs to the technical field of gear machining and relates to a method for machining and detecting a helical gear with a key way. The method comprises the following basic steps: a calibrated phase angle gamma0 on an evaluation plane is converted into a phase angle gamma to be measured on a transverse plane; an auxiliary reference block is fixed on a gear tooth transverse plane on which a tooth profile is machined; two sides of the auxiliary reference block are symmetrically machined on a machine tool; and angular positions of parts on the machine tool are adjusted based on thephase angle gamma on the required transverse plane so as to machine the key way on a key way machining tool with the machined sides of the auxiliary reference block as references. The method helps skillfully solve the problem of machining accuracy control of a phase angle between a central line of the helical gear tooth and a central line of the key way, a three-coordinate measuring machine is unnecessary, and the phase angle between the central line of the gear tooth and the central line of the key way can be accurately machined and measured on general numerical-control machining equipment. The method has advantages of high accuracy and credibility of machining and detection, offline repeated measurement, simple method and low cost.
Description
technical field [0001] The invention relates to a processing and detection method of a helical gear with key grooves, in particular to a processing and detection method of a helical gear tooth and key groove phase angle, belonging to the technical field of gear processing. Background technique [0002] Some large-scale mechanical transmission equipment that transmits both power and motion have strict requirements on the angle (phase angle) between the tooth centerline and the keyway centerline of the involute helical gear used. Since general-purpose CNC machining equipment (such as boring and milling machines, wire cutting machines, etc.) does not have the function of detecting the involute tooth profile, it is impossible to find the centerline of the gear teeth by means of dial indicator detection during processing and online detection. As a result, how to ensure that the phase angle meets the design requirements during processing and how to detect it after processing becom...
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IPC IPC(8): B23F9/00B23F23/12G01B21/00G01B21/22
Inventor 李钊刚
Owner 宝钢苏冶重工有限公司