tag:blogger.com,1999:blog-251728155238604316.post5528097131570824585..comments2023-03-19T07:53:08.021-07:00Comments on Julias Modelopolis: CNCing About Part 2Julias Modelopolishttp://www.blogger.com/profile/14384770032675084388noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-251728155238604316.post-34547526342284677432015-04-07T23:37:51.448-07:002015-04-07T23:37:51.448-07:00Thank you Simon.
I agree, there is plenty of good...Thank you Simon.<br /><br />I agree, there is plenty of good ideas there. As a result I spent some time last night looking for some modelling board as it seems to be ideal for CNC machining.<br /><br />J.Julias Modelopolishttps://www.blogger.com/profile/14384770032675084388noreply@blogger.comtag:blogger.com,1999:blog-251728155238604316.post-13626572270208938102015-04-07T16:43:04.475-07:002015-04-07T16:43:04.475-07:00Hi Julia
You're welcome. I couldn't stop ...Hi Julia<br /><br />You're welcome. I couldn't stop thinking of the possibilities when I first saw that page. <br />Good luck with the gears.<br /><br />P.S. Nice blog and beautiful modelling.<br /><br />SimonAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-251728155238604316.post-58084124795222997242015-04-07T12:41:08.256-07:002015-04-07T12:41:08.256-07:00Hi Anonymous.
Thank you very much for the link, t...Hi Anonymous.<br /><br />Thank you very much for the link, there is some really useful stuff there.<br /><br />J.Julias Modelopolishttps://www.blogger.com/profile/14384770032675084388noreply@blogger.comtag:blogger.com,1999:blog-251728155238604316.post-17116234217001182762015-04-04T19:49:10.689-07:002015-04-04T19:49:10.689-07:00I can't help you with the problems you're ...I can't help you with the problems you're having but I recently found this webpage that might be of interest. It explains how to create tiny gears with a CNC mill and casting resin.<br />http://lcamtuf.coredump.cx/gcnc/ch4/<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-251728155238604316.post-28974084977556877472014-09-26T10:12:51.803-07:002014-09-26T10:12:51.803-07:00Why not try indeed. It might be usefull to further...Why not try indeed. It might be usefull to further your method by cutting larger gears, so you can see exactly whats going on not only whilst the machine is running but also when examining the finished product, especially regarding surface finish.<br /><br />Another possible avenue might be to make up a little mandrel to mount a disc on so that the gear can be cut in two passes, roughing and finishing, to hopefully achieve the required finish.<br /><br />And it probably is a different language to most, cutting gears at home is usually the preserve of model engineers, a body of people who like to make everything as complicated and time-consuming as possible...Paul B.https://www.blogger.com/profile/05278773151546187084noreply@blogger.comtag:blogger.com,1999:blog-251728155238604316.post-56412563518428893762014-09-25T17:26:51.548-07:002014-09-25T17:26:51.548-07:00Thanks for the comment Paul. I was starting to thi...Thanks for the comment Paul. I was starting to think I had posted something in a different language or something!<br />I know gears are normally cut with a gear hob and dividing head but as I had a machine which should be capable of doing them, then why not try? If I can figure out how to cut them then it will help me and my engine building out loads. It wont be the end of the world if it doesn't work though.<br />You are right about how far the cutter is sticking out of the chuck so thanks but I feel this isn't the problem. I have spent a large chunk of today looking into a way of adding some anti-backlash nuts to the bed. Julias Modelopolishttps://www.blogger.com/profile/14384770032675084388noreply@blogger.comtag:blogger.com,1999:blog-251728155238604316.post-23362914732586974612014-09-25T12:02:41.371-07:002014-09-25T12:02:41.371-07:00Its a shame that it didn't work, but full mark...Its a shame that it didn't work, but full marks for trying. I've never heard of gears bing CNC milled like that, usually they're generated using specialised cutters with the blank held in a dividing head, or better still a dedicated machine (I used to set and run Fellowes spur gear and Gleason bevel gear cutters). I doubt that a slot drill would give the required surface finish. But please prove me wrong!<br />Just out of curiousity, is the slot drill as far in the collet chuck as it will go? There seems to be a lot of the shank sticking out, which could lead to excess vibration.Paul B.https://www.blogger.com/profile/05278773151546187084noreply@blogger.com