Here is the Open face router. It is the first open source closed loop open face router.
This machine is designed to be moved to its surface. Its primary focus is to cut on non-movable surfaces. It can easily be set up on the floor of a house for inlays or against a wall or door for intricate etchings.
Hardware:
The entire machine is moved by Windshield wiper motors with a close-loop encoder feedback. #40 bicycle chain, sprockets and idlers are used instead of leadscrews on the x and y. A leadscrew is used to move the Z axis.
The machine is designed to sit in a horizontal position or be mounted vertically. It can
Additional upgrades to come include a 5th axis head.
Milling:
The bed of the machine is able to cut on a 4'X4' surface. It will be movable to cut larger pieces by moving the machine in a grid power. This eliminates, Flower router and laser cutter.
The system we developed over 4 years and have now applied to the flower router router configuration namespace. Through the communication layer you can change kinematics models, change PID constants and store all the.
I think that if two motors are used to drive a shaft, there is a problem of synchronization between the two motors. If step loss occurs, torsion will appear at both ends of the shaft, which will affect the life of the shaft and the motor and affect the control accuracy. If you switch to a closed-loop stepper motor, the situation will get better, but there are still problems that affect the control accuracy and life.
Recommend a perfect axis stepper motor(nema 17) and driver, 59Ncm, 1.8 degree.
Stepper motor:
Driver: