Velocity and/or rotation speed changing device for use in speed reducing device for driving joint of industrial robot, has gear wheel formed as gear wheel body with large diameter fixed in radial direction outside tooth region

摘要

The device has gear wheel structures (A1) that comprise a common basic structure (74). Two tooth regions (70, 72) are arranged at outer perimeter of a shaft component (22) in an axial direction. A gear wheel (24A) of one gear wheel structure is formed as tooth region of the common basic structure in a direct manner. A gear wheel (26) of another gear wheel structure is formed as a gear wheel body (80) with large diameter fixed in a radial direction outside a tooth region of the basic structure, using a plastic material.