Search found 19 matches

by Chevvron
Wed Oct 21, 2020 5:30 pm
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: RTCP Kinematics
Replies: 1
Views: 867

RTCP Kinematics

Tom, Can you please check 4.35d Kmotion CNC kinematics .txt works with a varying pivot to chuck length entry. I have just run the attached program that should keep the tool tip at a constant zero position. If i change the pivot to chuck length entry in the kinematics.txt file attached it does not ma...
by Chevvron
Mon Oct 05, 2020 1:01 pm
Forum: Configuration Issues
Topic: Open Loop Tuning
Replies: 1
Views: 723

Open Loop Tuning

Tom, I thought i understood your reply to this question but i obvously do not. With the machine motion control issues i want to check the velocity response of the axes and go back to the beginning. I have attached the configuration for the Y axis. I have attached the step response configured how i t...
by Chevvron
Mon Sep 28, 2020 7:21 pm
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: 4.35d, Index ip, RTCP advice
Replies: 7
Views: 1135

Re: 4.35d, Index ip, RTCP advice

Tom, The information below is from memory as I am now at home. The input gain in the init file is scaled so that the resolution is 1 micron. The linear axis feedback is the emulated quadrature output from the Stober direct drive lead screw drives. The rotary angular axis drives are harmonic drive ac...
by Chevvron
Mon Sep 28, 2020 5:08 pm
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: 4.35d, Index ip, RTCP advice
Replies: 7
Views: 1135

Re: 4.35d, Index ip, RTCP advice

Tom,
I have only just got to use the machine late this evening.
I was worried about your comment of not using high enough velocities to test the machine.
I have attached motion plots for your comments please.
Tim
by Chevvron
Sat Sep 26, 2020 1:08 pm
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: 4.35d, Index ip, RTCP advice
Replies: 7
Views: 1135

Re: 4.35d, Index ip, RTCP advice

Tom, Thanks again for the prompt reply. I will download 4.35d and try. My rotary axis encoder input was confused but just clarify : Encoder index+ to ch5A+, encoder index- to ch5A- maps to bit 38 on KFlop ? My logic for rotary axis velocity was the same as your reply below but we do have a shorter p...
by Chevvron
Fri Sep 25, 2020 9:38 pm
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: 4.35d, Index ip, RTCP advice
Replies: 7
Views: 1135

4.35d, Index ip, RTCP advice

Tom, Thanks for last weeks answers but I now have a few more queries. Does 4.35d pass a new pivot to chuck length within Kinematics.txt through to KMotion CNC in this without a rebuild or I have misunderstood the version change log ? Our A and B rotary axis have single ended index pulses. But 38 = A...
by Chevvron
Thu Sep 17, 2020 5:17 pm
Forum: KMotionCNC, G Code Files, Offsets, Post Process
Topic: Fusion post, G93, limits, 4.35d
Replies: 1
Views: 606

Fusion post, G93, limits, 4.35d

Tom, I have a few questions please : Is there a Fusion 360 multi-axis post available for Dynomotion ? I have modified the standard rs274d for 5 axis and it seems to work but this has been arrived at by experimentation and reading the 260 page HSM post processor guide. I still have queries about the ...
by Chevvron
Fri Jun 26, 2020 6:21 pm
Forum: Hardware Interface Issues
Topic: Read Failed Auto Disconnect
Replies: 8
Views: 2086

Re: Read Failed Auto Disconnect

Tom, The KFlop rev 1.1 now seems to remain connected as it has been on test on 2 laptops all week. It was set up as USB power (J3 on) and KFlop only. I don't know what was happening last week or before. However the problem of the latest KFlop and another FTDI device remains on the 5 axis computer. F...
by Chevvron
Sat Jun 20, 2020 6:10 pm
Forum: Hardware Interface Issues
Topic: Read Failed Auto Disconnect
Replies: 8
Views: 2086

Read Failed Auto Disconnect

Tom, I have our original KFlop on the bench connected to a laptop with J3 installed to try and isolate the usb disconnect issue. This is why I purchased a second KFlop and Kanalog. This new combination initially would not connect on our 5 axis development machine until I unplugged another FTDI RS485...
by Chevvron
Sun Mar 15, 2020 2:41 pm
Forum: Configuration Issues
Topic: RTCP Configuration 1
Replies: 4
Views: 2484

RTCP Configuration 3

Tom, With reference to my earlier post this morning RTCP Configuration 2. Partially my own fault as i was not looking at the 435b directory. Having flashed the KFlop i am definitely working with 4.35b version. However if i use the Forum Kinematics.txt as is then KMotionCNC loads and runs. If i edit ...