Gear machining support device and gear machining device

Abstract

The invention provides a gear machining support device capable of approximating a plurality of trimming elements of a tooth surface shape of teeth of a gear to a target trimming amount. The gear machining support device (20) performs machining support when machining teeth of a gear on a workpiece by synchronizing the rotation of the workpiece about the central axis (RW) of the workpiece with the rotation of a machining tool about the central axis (RT) of the machining tool and moving the workpiece and the machining tool relative to each other. The gear machining support device includes: a target modification amount storage unit (23) configured to store target modification amounts of at least two of modification elements of a tooth surface shape of the tooth of the gear, the modification elements including crowning, bias, a helix angle, a pressure angle, and a tooth profile roundness; and a correction amount determination unit (24) configured to determine a correction amount (deltaY, deltaB, deltaCw) of a machining control element during a machining operation such that the at least two of modification elements approximate the respective target modification amounts stored in the target modification amount storage unit.

Description

technical field [0001] The present invention relates to a gear processing auxiliary device and a gear processing device. Background technique [0002] When the gear is loaded, the teeth and the shaft are deformed, the meshing state is deteriorated, and noise is generated. For gears, it is required to achieve ideal meshing under load to improve quietness, so the tooth surface shape of the teeth must be modified. As elements for modifying the tooth surface shape of a tooth of a gear, there are, for example, crowning, bias, torsion angle, pressure angle, and tooth profile roundness (see Patent Documents 1-3). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2012-152837 [0004] Patent Document 2: Japanese Patent Application Laid-Open No. 5-274027 [0005] Patent Document 3: Japanese Patent Application Laid-Open No. 8-197332 [0006] When dressing the tooth surface shape of a gear tooth, changing the center-to-center distance between the center axis of the machining...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to approximate multiple dressing elements to the target dressing amount, and there is a problem that the degree of freedom in the shape of the tooth surface that can be designed is significantly reduced.

Therefore, the present situation is that after the tooth surface shape is trimmed by the trial and error method, the teeth of the gear having the trimmed tooth surface shape are processed, and there is a problem that it takes time for machining.

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