Dressing Device for Gear Grinding with Varying Pressure Angle

The patent changes the operational parameters of the existing dressing device by varying the rotating speed of the threaded grinding wheel and the moving speed in the axial direction during the dressing process. This creates a varying pressure angle along the tooth trace direction without requiring any structural modifications, high-stiffness mechanisms, or position detecting sensors, thus achieving bias correction while maintaining device compactness and low manufacturing cost

The patent introduces dynamic control of the dressing process by continuously varying the rotating speed of the threaded grinding wheel or the axial moving speed during operation. This dynamic parameter adjustment enables the pressure angle to vary along the tooth trace direction, achieving bias correction through operational flexibility rather than through complex mechanical structures

The patent achieves bias correction by changing operational parameters (rotating speed or axial moving speed) rather than structural parameters. This approach eliminates the need for expensive high-stiffness mechanisms and position detecting sensors, significantly reducing manufacturing cost while maintaining the ability to precisely adjust bias amount

The existing dressing device structure serves itself by utilizing its inherent capabilities (rotation and axial movement) combined with dynamic parameter control. No additional expensive components are needed as the existing system, when operated with varying speeds, automatically achieves the pressure angle variation required for bias correction