Dressing gear and method for dressing a gear-shaped grinding wheel

Abstract

The present invention provides a dressing gear which facilitates fine dressing and grinding with small modulus and a method for dressing with the dressing gear. The dressing gear is characterized in that: diamond fine particles or CBN fine particles are coated on the surface of each tooth for forming a tooth-shortage structure which has an even number of total tooth number and has one missed tooth alternatively for each half of the total teeth; and fine dressing and grinding are performed through a diamond grinding wheel. A synchronization system which causes a main shaft of the tool and a main shaft of a workpiece to match and interlock at a state that the dressing gear is engaged with a gear-shaped grinding wheel, thereby dressing all teeth of the gear-shaped grinding wheel.

Description

technical field [0001] The present invention relates to a method for dressing a gear-shaped grinding wheel used for honing or grinding gears by profiling gears and a profiling gear, in particular to a dressing method and a profiling method suitable for dressing a gear-shaped grinding wheel with a small modulus gear. Here, gears refer to spur gears and helical gears, including external gears and internal gears. Background technique [0002] Conventionally, for honing spur or helical gears, internal or external grinding wheels have been used. The inner cylindrical grinding wheel is in the shape of a ring, and teeth that can mesh with the gear to be honed are formed on the inner peripheral surface. The cylindrical grinding wheel is generally in the same annular shape, and teeth that can be meshed with the gear to be honed are formed on the outer peripheral surface. In addition, grinding wheels are also used for grinding gears, and those in the shape of worm wheels are used. ...

AI Technical Summary

Problems solved by technology

[0005] However, when the modulus of the profiling gear becomes smaller, that is, when the tooth pitch of the profiling gear becomes narrower, the diamond grinding wheel interferes with the adjacent teeth and cannot perform fine grinding.

That is, when the thickness of the diamond grinding wheel is less than 0.5 mm, the precision decreases due to manufacturing reasons and the strength required for finish grinding is insufficient.

Therefore, it is difficult to economically produce profiling gears with a small pitch and a module less than 1.25

As a result, it is difficult to dress a gear-shaped grinding wheel for honing a gear (workpiece) with a modulus of less than 1.25 and a worm-shaped grinding wheel for grinding a gear (workpiece) with a modulus of less than 1.25

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