Skiving is a cutting process which was first patented in 1910[1] as an efficient process to manufacture internal ring gears.Like honing, Power Skiving uses the relative sliding motion betweentwo “cylindrical gears” whose axes are inclined. The skiving cutterlooks like a shaping cutter with a helix angle for example, 20°different than the helix angle of the cylindrical gear to bemachined.
The skiving process is multiple times faster than shaping andmore flexible than broaching, due to the continuous chip removal inskiving, but it presents a challenge to machines and tools. Whilethe roll motion between the cutting edge and the gear slots occurswith the spindle RPM, the relative axial cutting motion is onlyabout one third of the circumferential speed of the cutter. Thecutting components of rolling and cutting which result in a “spiralpeeling” are represented with the process designation skiving.
Because of the relatively low dynamic stiffness in the geartrains of mechanical machines as well as the fast wear of uncoatedcutters, skiving of cylindrical gears never achieved a breakthroughagainst shaping or hobbing until recently. The latest machine toolswith direct drive train and stiff electronic gear boxes present anoptimal basis for the skiving process. Complex tool geometry andthe latest coating technology were required to give the softskiving of cylindrical gears a breakthrough. Gleason has developeda line of dedicated power skiving machines, which apply solid HSScutters for small to medium modules.
- Edition:
- 13
- Published:
- 09/01/2013
- Number of Pages:
- 18
- File Size:
- 1 file , 1.2 MB
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