Harmonic drive 4th axis build

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09 Nov 2018 06:51 #120313 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
The following user(s) said Thank You: tommylight

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13 Nov 2018 09:28 #120529 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
The plates were not very flat, so facing them with the fly cutter and start the final assembly.

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16 Nov 2018 10:25 #120824 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
Continue with the final assembly and start by dealing with a stuck tapered pin.


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18 Nov 2018 16:03 #120951 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
Making surfaces parallel to the harmonic drive.

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20 Nov 2018 07:53 #121044 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
Working on the top cover.

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22 Nov 2018 23:37 #121246 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
Finally starting to use it. If you haven't followed this series, the last five minutes may be worthwhile watching anyway.

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23 Nov 2018 06:58 #121249 by JC10
Replied by JC10 on topic Harmonic drive 4th axis build

andypugh wrote: Do you want one of these castings?

bodgesoc.blogspot.com/2017/05/harmonic.html

I think I have one left.


Andy, I might be interested in your remaining casting for a FHA-25. I have a few questions. I sent you a PM on CNCZone.

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25 Nov 2018 19:29 - 29 Nov 2018 07:11 #121335 by Hakan
Replied by Hakan on topic Harmonic drive 4th axis build
Yes, worthwhile checking alternatives to build from steel plates, it is a lot of work...

I thought I was ready with the rotary axis, but there was some work needed in Fusion 360 to get the rotary axis well supported. As usual, I made a video about that.



The fixed Fusion 360 post processor for my A axis and inverse time feed mode is attached. For linuxcnc of course. You can see it in action in the video. The G-code runs directly, without any hand-editing or such things.

File Attachment:

File Name: linuxcnc-f....cps.txt
File Size:55 KB


History:
25 November 2018: The version in the video
28 November 2018: Changed tcp on line 585 to false. Affected paths at tool position angle <> 0
29 November 2018: Added G94 to canned cycles

Here is a shared link to the Fusion 360 model of the harmonic drive housing being built in this video series: a360.co/2r4Xv3s
Due to the rework needed, it is not in the best conditions. If you use it, you better check that all dimensions are what you need.
Attachments:
Last edit: 29 Nov 2018 07:11 by Hakan.
The following user(s) said Thank You: JC10

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02 Sep 2019 19:28 #143926 by opw
Replied by opw on topic Harmonic drive 4th axis build

andypugh wrote: Do you want one of these castings?

bodgesoc.blogspot.com/2017/05/harmonic.html

I think I have one left.


If you still have one, I'd be interested...

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02 Sep 2019 20:13 #143930 by andypugh

opw wrote: If you still have one, I'd be interested...


Where are you? The casting is in the UK.

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