Gallery, Projects and General > How do I?? |
Thread cutting on a Stanko 1A616 |
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philf:
--- Quote from: ksor on November 21, 2013, 02:13:49 PM --- --- Quote from: philf on November 21, 2013, 12:20:08 PM ---Ksor, If the 55 tooth gear is 114mm outside diameter the M2 might mean 2 Module - which is the size of the teeth. Phil. --- End quote --- :scratch: :scratch: :scratch: I don't get you ! Do you mean that IF I should make a new or extra set of change gears I would have to use the M2 gear cutters or ... ? --- End quote --- You asked what M2 might mean. I was guessing it may be 2 Module and was giving you a method of checking. The OD of a gear is (n + 2) * Module (where n = number of teeth). So for a 55 tooth gear the OD = (55 + 2) * Module and if the Module is 2mm then the OD would be 114mm. You would need a 2 Module gear cutter (or set of cutters) if you were to make more. I guess the term you may be looking for for "multi-keywayed" might be "splined". Phil. |
ksor:
--- Quote from: philf on November 21, 2013, 03:01:01 PM ---You asked what M2 might mean. I was guessing it may be 2 Module and was giving you a method of checking. The OD of a gear is (n + 2) * Module (where n = number of teeth). So for a 55 tooth gear the OD = (55 + 2) * Module and if the Module is 2mm then the OD would be 114mm. You would need a 2 Module gear cutter (or set of cutters) if you were to make more. I guess the term you may be looking for for "multi-keywayed" might be "splined". Phil. --- End quote --- OK, thx I thought it has to do with the threads - making new sets of change gears will have to wait a while :( |
RussellT:
Yes, I do understand, I would expect it the first one written down to be the driver and the second to be driven as you suggest. If you used one that was 30:55 then if they were the wrong way round the error would be huge and easy to see. Russell |
ksor:
--- Quote from: RussellT on November 21, 2013, 04:23:20 PM ---Yes, I do understand, I would expect it the first one written down to be the driver and the second to be driven as you suggest. If you used one that was 30:55 then if they were the wrong way round the error would be huge and easy to see. Russell --- End quote --- Yeah, that's right, but it's not that easy to "see" the difference between a pitch 1,75mm and 2mm without doing a light cut and measure - let's say 10 of them. I'll try to take a Picture of that table - maybe you can see the pattern in the notation. |
RussellT:
Well you could save stock and make it easier to test a lot by putting a fine marker pen or a pencil in the tool post and cleaning off between trials, or if you stuck a piece of paper on a piece of stock you would have a record for each setting you tried. Yes, please try and post a picture of the table. Russell |
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