Gear Cutting Machine 1949 or Jacobs Hob

[malcolm rixon 1Participant @malcolmrixon1]

Jacobs or Eley Which gear cutting machine?

[malcolm rixon 1Participant @malcolmrixon1]

With the recent articles in MEW about gear cutting using the Jacobs hobbing machine it has started me thinking that this might be a nice project but I can only find the castings from CES and I am in Australia.  This  got me looking around and I found at Hoby Mechanics the a set of castings for a ” gear cutting machine”

http://www.hobbymechanics.com.au/products/Gear-Cutting-Machine.html not that there is much information about it on the site but I believe I have cross referenced the  cad image to this one http://modelenginenews.org/techniques/skews.html and it seems this relates to a design or at least a number of articles by J.S Eley in 1949 in ME Volume 100 issues 2499 thru 2506.  Anyone any experience with this one especially made using the Hobymechanics castings.

Cheers All

 

[John BurridgeParticipant @johnburridge26484]

As well as the College engineering/Jacob's hobbing machine have you had a look on the net at the Martin version which has improvements for the spindles being mounted on roller bearings and a inbuilt tray for the swarf, Both of the suppliers you can buy just the drawings and you could combine the best feachers of both machines also being in Australia and would need to either fabricate or make patterns you could scale up so you can cut larger gears.

The Jacob's gear hobber was covered in the British MEW mag some year ago including the making and relieving of hobs which is usefull to save the expence.

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