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311  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 11:54:24 AM
Terry, I think I confused you again. I was not using the flat length (chord length), but rather the distance across the flats - what you actually measure with a caliper across flats. You can call it the inscribed circle diameter otherwise.

Dan
312  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 10:48:14 AM
Thanks Terry. Reason I did it with the distance across flats is that usually that would be the known parameter as dictated by standard wrench sizes. I can see though where the shaft diameter would be rather convenient. Anyway not a problem to derive one from another. What I do like in your approach is, as I mentioned, the option to do this in multiple passes.

Yes, the math with arcs is going to be painful. Interesting how it will work out.

Dan
313  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 08:52:43 AM
Grin

Dan
314  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 07:31:19 AM
What noise do you mean? Two sounds are there - one of the X stepper and the other of the A axis which has very high acceleration and hence you here it as knocks. Material is delrin.

Dan
315  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 07:01:51 AM
Thanks Ya-Nvr-No.

Terry, thanks to your idea of utilizing the toolpath display I was able to debug the code and now have a perfect working version. It works very well. With my approach the minimal number of flats is 3. See attached final code. I have also cleaned it up a bit and added some more comments for readability. Works very well here and I am pleased.

Here is a short video showing it in action:

http://www.youtube.com/watch?v=DajrTlI8IWA&feature=youtu.be

Took less than a minute to cut this.

Dan
316  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 01:47:19 AM
By the way. Changed my code to work in degrees mode so that toolpath would display more meaningfully. See attached. It didn't occur to me previously, but this way the debugging is easier. Interestingly the toolpath produced by my code consists of almost straight lines, while yours of curved lines. So based on the fact that mine did produce flats somehow, I would assume that there is a problem with yours  Huh.

Dan
317  Mach Discussion / VB and the development of wizards / Re: Any new WIZARD ideas to work on ??? on: October 19, 2012, 01:28:29 AM
Ah.. I see now what you mean. Cutting the shape in multiple passes. This is more powerful than my approach. And you code looks much simpler too Wink Not that I figured the math though.

Dan
318  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 18, 2012, 03:13:34 AM
True. Do you have a link to the Honeywell switches? What type are they and what accuracy?

Dan
319  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 17, 2012, 03:24:15 PM
I agree on the roller type advantages you mentioned, but every additional moving link reduces repeatability in my opinion, that's why I tried to stay away of this.

Dan
320  Mach Discussion / General Mach Discussion / Re: Accuracy of Homing Devices? Pro's and Con's of Different Sensors on: October 17, 2012, 03:16:56 PM
Thanks Hood. These are not plastic however - it's an anodized aluminium there Wink

Mounting them to trigger against an inclined surface could be used to solve the overtavel problem. But I mount them just before the hard stop.

Dan
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