Gear hobber (mechanical)

[Chris Robinson 2Participant @chrisrobinson2]

Message for the moderator :Please remove my e-mail address from my previous post as advised

Thanks, Chris.

[Gustav ThiesenParticipant @gustavthiesen53240]

To Chris Robinson:

Thank you very much für your post. I'm very interested in the basics of your differential add-on. So I would be pleased to receive your informations. Perhaps you can give me some tips of the design of the add-on too.

[BazyleParticipant @bazyle]

For the record, from Neil’s spreadsheet index

“Using the Jacobs Gear Hobbing Machine to Cut Helical Gears Part 1”

MEW 2010 November vol 169 page 36 by Chris Robinson.

Not sure what it covered as I can’t find this issue.

[Chris Robinson 2Participant @chrisrobinson2]

Bazyl, This article, which I wrote was published in MEW in 4 parts. No.169 Nov 2010 pp36-41, No170 Winter 2010 pp 32-35, No172 Jan 2011 pp 44-48. It covered modifications to the Jacobs hobber to cut helical gears. I wrote a further article covering the fitting a differential to the index train, cutting worm gears using plunge feed, cutting worm gears using ACME taps as hobs with tangential feed and more but MEW declined to publish.

If you message me your e-mail address I can send this to you.

[TendorParticipant @tendor]

This diagram of the kinematics of a commercial universal hobbing machine (DEMAK) might be of interest.

It might not be obvious, but to cater for hob lead and helical gears, the hob axis can be tilted about the axis of gear pair H-I.

[Marischal EllisParticipant @marischalellis28661]

Hi All

Do you use Google translate to understand a thread? . Seems to work for me the few times I have tried it. Just a thought for Gustav.

Best wishes to all.

M

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Rodney Entwistle on 26/10/2016 06:15:02:

This diagram of the kinematics of a commercial universal hobbing machine (DEMAK) might be of interest.

.

Thanks, Rodney

That's very helpful

MichaelG.

[Duncan MunroParticipant @duncanmunro42894]

Posted by Rodney Entwistle on 26/10/2016 06:15:02:

This diagram of the kinematics of a commercial universal hobbing machine (DEMAK) might be of interest. […]

Wow! That's some machine Thanks for posting.

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