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Author Topic: thread cutting VS hobbing  (Read 1803 times)

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thread cutting VS hobbing
« on: January 31, 2011, 04:02:44 PM »
Hi Gent and Ladies

i have been thinking to my self about gear hobbing and how similar it is to tread cutting. I am just thinking that the two processes are very similar, effectively you have a spindle that is rotating in sympathy to a feeding axis though the second axis is rotating. then you have a third axis feeding the cut which is not relative to anything out.

My question is that if you run the spindle at a constant speed and have a signal pulse on the axis and is good enough for thread cutting why is it not good enough for hobbing. My guess and probably the answer to my own question is that due to the time in cut the timing drifts and therefore destroys the gear.

this is just a thought provoking question.