2011年4月8日 · If you find a cheap source for gear cutters, especially 14 1/2 degree pressure angle, please let us know. These cutters have gotten expensive the last few years. Oh, and be careful with buying on ebay. Some of the sellers there think anything round with teeth on it is a 'valuable gearcutter'.

2017年1月28日 · Involute gear cutters have a range for the number of teeth they cut for a proper tooth profile, something like 7 or 8 cutters in the series to go from 12 or so teeth up to a rack (infinite teeth). You can gears by grinding a single-tooth HSS tool to match the gear tooth profile and mount it in a fly cutter.

2017年12月26日 · The arbor and cutters are mounted to the milling machine spindle, and the milling machine is adjusted so that the cutters are centered over the shaft. The splines are cut by straddle milling each spline to the required depth ( Table 8-8 ) and using the index head of the indexing fixture to rotate the workpiece the correct distance between each ...

2020年6月12日 · I'll end up cutting a longer length than just 0.315" along the blank. Below is a sketch of the part I'm making. Figure once I have the set up, I'll try to machine around 1.4" of gear which will give me two of these parts (after the lathe work). That'll make my routine something like "G1 X -1.559 Z -1.559 A 490" (7X of one gear).

2019年3月11日 · I needed to make a gear on my Atlas milling machine recently and I documented the process in a video that I wanted to share. Here's a link to the video if you'd like to see it: It's kind of long, but the part with the Atlas milling machine shows up at …

2012年3月9日 · Basically, you just make a single point tool like you would for cutting a thread, except instead of using a 60º point, you make it double the pressure angle of the gear you want to cut (40º for a 20º PA gear). Then you cut a thread with it in a piece of O1 drill rod, turn it into a cutter by milling some flutes into it and harden the cutter.

2021年8月7日 · One point to consider is the cost of the hobs necessary to the operation of the machine, regular involute gear cutters are relatively cheap on e bay and make accurate enough gears for most purposes. Also think on all the change gears necessary to operate a hobber, not to mention all the calculations necessary to set one up.

2016年2月8日 · Basically make a button cutter and use the distance between centers and infeed to make the profile of the gear cutter. Law gives the values for making a set of 6 cutters from 17-20 teeth to 135-rack for pressure angle of 20 degrees and a set of 9 cutters from 10-11 teeth to 135-rack for pressure angle of 30 degrees.

2016年12月31日 · A Gear-Cutting Machine, by T.D. Jacobs, Model Engineer, 16 January 1976 A Gear-Cutting Machine, part II by T.D. Jacobs, Model Engineer, 6 February 1976 A Gear-Cutting Machine, part III by T.D. Jacobs, Model Engineer, 20 February 1976 A Gear-Cutting Machine, part IV by T.D. Jacobs, Model Engineer, 5 March 1976

2021年4月16日 · Did an internship in a gear/spline shop. Gives me the right to say I know absolutely jack s*** about gear and spline cutting lol. Splines are typically parallel sided (as shown in the MH except above) or involute (what I am guessing yours are). Both types are production cut with hobs on a gear hobber or with milling cutters in lesser production ...