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Thread: Gears, gears and more gears
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12th July 2014, 07:52 PM #16
spindle removal
I have already done some investigating re: removing the spindle . The thing that worries me is: the LH end of the spindle , is where I need to apply pressure onto , in order to push it out towards the tailstock -> but the spindle end looks to be somewhat fragile , the bore is large and the walls are thin .
My plan is to turn up a plug for the spindle end , this will support the spindle as I press it out and maybe prevent distortion
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12th July 2014, 09:17 PM #17
The animation I was thinking of was more along the lines of Wikipedia. Purely instructional.
I like to keep checking on the Woodgears website as there are some absolutely brilliant designs there. When I get going with woodworking I intend to make some of the machines, like the tenon machine.
Dean
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12th July 2014, 09:32 PM #18
The animation I was thinking of was more along the lines of Wikipedia. Purely instructional.
I like to keep checking on the Woodgears website as there are some absolutely brilliant designs there. When I get going with woodworking I intend to make some of the machines, like the tenon machine.
Dean
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13th July 2014, 11:47 AM #19
gear cutter
Maybe one of the more erudite members could advise me
There is a current ebay listing for a 8DP 14.5 PA gear cutter #4 which cuts 26 to 34 teeth . I theoretically need the #5 which cuts 24 teeth .
Question. Will the #4 cutter suffice for my needs ? Mike
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13th July 2014, 12:50 PM #20
making gears
This is interesting and maybe what I need
How a rack cutter can produce gear teeth
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13th July 2014, 01:43 PM #21Pink 10EE owner
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I would not do anything until you remove the gear and measure it up properly...
Also Chinese gear cutters seem to run backwards number wise compared to the ones made in countries like US, UK, Au, etc etcLight red, the colour of choice for the discerning man.
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13th July 2014, 01:46 PM #22Philomath in training
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Not really. It could be used if there were no alternative but best not to (ie end of the world approaching and that was the only cutter available to make the necessary spare part and avert global tragedy). These form cutters are made so that they are most accurate at the bottom end of their range. Using that #4 you would get a beautiful 26t gear but if you used it for a 24T it would not be as good. a number 5 cutter will only cut 5 different size gears, so the change in geometry is pretty severe at that end of the range.
For the one gear I'd lend you one but all my cutters are 10DP or more.
Michael
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13th July 2014, 05:27 PM #23SENIOR MEMBER
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Agree. If you are making the gear from cast iron you could easily use a fly cutter.
Shape a single point cutter to the existing profile and your good to go.
A fly cutter can cut just as good as an involute provided you go slowly. You've only got a few teeth to do anyway.
RobThe worst that can happen is you will fail.
But at least you tried.
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13th July 2014, 05:52 PM #24Pink 10EE owner
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Just let me know if you want the gear profile made up.... I can print it out 1:1 and mail it down if you wanted the gear profile... Or print out a heap of different ones...
Light red, the colour of choice for the discerning man.
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14th July 2014, 01:00 AM #25
Interesting German gear cutting (hobbing?) machine
This looks big....
PFAUTER ABW
and too far away ...Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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14th July 2014, 02:10 PM #26
easy way
This method might do
How to correctly profile a single point gear cutter - easy method - YouTube
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15th July 2014, 06:49 PM #27
spindle out
The spindle is out
With the gear now acccessible and easy to measure . It is 2.6" OD
So 24+2 and 2.6 equals 10DP
SO I need a 10DP cutter
I managed to cut off a section of cast iron for the new gear blank. I destroyed 2 HSS bits attempting removing the hard skin from this chunk of iron , I changed to a Carbide tip and that worked OK , but I had to lower the rpm
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15th July 2014, 07:00 PM #28Philomath in training
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A 10DP cutter I do have. PM me with an address and I can send it on holiday if you like.
Michael
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15th July 2014, 11:18 PM #29GOLD MEMBER
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What method are you going to use to replace the damaged gear?
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16th July 2014, 12:16 PM #30
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