- LinuxCNC
- General LinuxCNC Questions
- The reduction ratio, transmission ratio and scale will not be configured
The reduction ratio, transmission ratio and scale will not be configured
- EdisonBin
- Offline
- Senior Member
-
Less
More
- Posts: 54
- Thank you received: 4
13 Apr 2022 06:42 #240112
by EdisonBin
The reduction ratio, transmission ratio and scale will not be configured was created by EdisonBin
Hey, guys. I have a simple 6-axis mechanical arm purchased from outside. I have equipped a series of things such as connecting rod parameters. Now I can make his six joints move through my own UI interface, which is so cool!
But I soon encountered another problem. The actual rotation angle was inconsistent with the angle displayed on my software.
My mechanical arm is driven by belt pulley. I'll put the picture below.
I tried to modify the "scale" parameter of each axis in the ". Ini" file, but I changed it indiscriminately and could not obtain the accurate "scale" parameter through calculation.
Please ask my brothers,
Is my question about the reduction ratio? Is it correct for me to modify the "scale" parameter in the ". Ini" file? How can I calculate the correct "scale"?
Thank you for your answer, thank you, from the anxious Edison
But I soon encountered another problem. The actual rotation angle was inconsistent with the angle displayed on my software.
My mechanical arm is driven by belt pulley. I'll put the picture below.
I tried to modify the "scale" parameter of each axis in the ". Ini" file, but I changed it indiscriminately and could not obtain the accurate "scale" parameter through calculation.
Please ask my brothers,
Is my question about the reduction ratio? Is it correct for me to modify the "scale" parameter in the ". Ini" file? How can I calculate the correct "scale"?
Thank you for your answer, thank you, from the anxious Edison
Please Log in or Create an account to join the conversation.
- tommylight
-
- Away
- Moderator
-
Less
More
- Posts: 19479
- Thank you received: 6532
13 Apr 2022 10:25 #240127
by tommylight
Replied by tommylight on topic The reduction ratio, transmission ratio and scale will not be configured
You need
-drive microstepping
-motor steps per rotation, usually 200 for 1.8 degree/step motors
-motor pulley teeth
-big pulley teeth
Or
Gear ratio
Example:
Drive microstepping 1/4
200 steps motor
This makes it 800 steps per rotation as the drive is set to do one motor step for 4 steps from the controler
Drive ratio 1:8
Meaning 1 rottation of the axis requires 8 fotations from the motor, and since we have 800 steps per motor rottation we get 6400 steps per axis rottation.
Now we need to divide that by the angle on rotational axis, so 360 degrees
6400:360 = this will be the scale to put in the ini file.
-drive microstepping
-motor steps per rotation, usually 200 for 1.8 degree/step motors
-motor pulley teeth
-big pulley teeth
Or
Gear ratio
Example:
Drive microstepping 1/4
200 steps motor
This makes it 800 steps per rotation as the drive is set to do one motor step for 4 steps from the controler
Drive ratio 1:8
Meaning 1 rottation of the axis requires 8 fotations from the motor, and since we have 800 steps per motor rottation we get 6400 steps per axis rottation.
Now we need to divide that by the angle on rotational axis, so 360 degrees
6400:360 = this will be the scale to put in the ini file.
The following user(s) said Thank You: EdisonBin
Please Log in or Create an account to join the conversation.
- EdisonBin
- Offline
- Senior Member
-
Less
More
- Posts: 54
- Thank you received: 4
14 Apr 2022 01:47 #240202
by EdisonBin
Replied by EdisonBin on topic The reduction ratio, transmission ratio and scale will not be configured
Thank you so much, Tommy. Thanks to you, I got the correct "scale" parameter. It turned out that I didn't divide by 360 in the end. nice day!
The following user(s) said Thank You: tommylight
Please Log in or Create an account to join the conversation.
- tommylight
-
- Away
- Moderator
-
Less
More
- Posts: 19479
- Thank you received: 6532
14 Apr 2022 09:02 #240219
by tommylight
Replied by tommylight on topic The reduction ratio, transmission ratio and scale will not be configured
You are welcomed, always.
Please Log in or Create an account to join the conversation.
- LinuxCNC
- General LinuxCNC Questions
- The reduction ratio, transmission ratio and scale will not be configured
Time to create page: 0.225 seconds