Cuts are not as designed

More
25 Sep 2020 14:50 #183727 by tommylight
Replied by tommylight on topic Cuts are not as designed
If it is loose, tighten it.
Also check the play between pinion and gear rack.

Please Log in or Create an account to join the conversation.

More
25 Sep 2020 14:52 #183729 by Aldenflorio
Ok. Once I figure it out is that something that the linuxcnc can fix or is that a hardware fix?

Please Log in or Create an account to join the conversation.

More
25 Sep 2020 14:53 #183730 by tommylight
Replied by tommylight on topic Cuts are not as designed
Hardware.
The following user(s) said Thank You: Aldenflorio

Please Log in or Create an account to join the conversation.

More
25 Sep 2020 14:58 #183733 by Aldenflorio
Ok. Thank you

Please Log in or Create an account to join the conversation.

More
26 Sep 2020 14:11 #183847 by Aldenflorio
Fixed. It was as you said
The following user(s) said Thank You: tommylight

Please Log in or Create an account to join the conversation.

More
26 Sep 2020 22:06 #183892 by thefabricator03

Fixed. It was as you said


Tom, Just curious, when does direct drive with steppers become unworkable? As in when do you need a reduction stage?

Please Log in or Create an account to join the conversation.

More
26 Sep 2020 22:41 - 26 Sep 2020 22:41 #183895 by Aldenflorio
I second this question. I have also follow up questions: what is a reduction stage and what does this person mean when they say “unworkable”?
Last edit: 26 Sep 2020 22:41 by Aldenflorio.

Please Log in or Create an account to join the conversation.

More
26 Sep 2020 22:50 - 26 Sep 2020 22:55 #183897 by thefabricator03
When I said unworkable I mean, as Tom posted in another thread that direct drive with a pinion gear will end up with around 100mm of travel per one revolution of the stepper motor which is too course.

I guess that comes down to pinion size and rack size but there must be a grey area where it works.

Also a reduction stage is where the stepper motor output is multipled by a gear ratio to give a increase in torque and decrease in travel per revolution. I have a 10:1 gearbox on my stepper motors so for one rotation of the stepper the pinion will move 1/10th of that.
Last edit: 26 Sep 2020 22:55 by thefabricator03.

Please Log in or Create an account to join the conversation.

More
26 Sep 2020 23:41 #183901 by Aldenflorio
Interesting. I don’t have a gear reduction box on my motors at all and I don’t seem to have a problem. I’m not using pinion gears though. Would the point of a gear reduction be for accuracy or so the motors don’t go too fast?

Please Log in or Create an account to join the conversation.

More
26 Sep 2020 23:47 #183902 by thefabricator03
What are the specs of your motors?

With the gearbox, usually they are used for servos since servo motors have a specific RPM the work at best. The reduction box reduces the speed of the servo to something usable and they can also be used to increase the torque of the motor.

Please Log in or Create an account to join the conversation.

Time to create page: 0.075 seconds
Powered by Kunena Forum