The EMI filter was placed on the power supply side to the VFD.įerrite rings were used to reduce noise going from the VFD to the motor.Īn on/off switch was used to provide power to the spindle and lead screw drive systems. I decided purchase a 1/3hp 3ph motor and VFD kit from eBay, the motor frame size was similar to the existing 1/2hp 1ph motor so it was a direct fit.įor the drive system I also purchased an inline EMI filter (this TECO VFD puts off alot of noise and was interfering with the Arduino).
#Atlas lathe motor update#
Once the motor is running the LCD does not update and you cannot change the thread pitch until the motor is stopped. Once the desired thread or pitch is selected a 3-way switch is used to turn the motor in either CW or CCW direction. This allows the user to select either metric or English units and thread sizes. An LCD display was used along with two momentary push buttons for the user interface. The Arduino reads the spindle speed and adjust the servo RPM to match the correct ratio based on user input to create either metric or English threads. The lead screw drive system uses an Arduino to create a sort of electronic gearbox. Replace the single-phase drive motor with a three-phase and drive it with a VFD. The spindle drive system is pretty straight forward. Since the VFD driven spindle is a separate system to the electronic lead screw I broke it down into two parts: the spindle drive system and the lead screw drive system. In addition, I decided to add a VFD to control the motor spindle speed. After searching the web I could not find good information on making or buying an electronic lead screw so I decided to start make one. Shipping to UK mainland (excluding Highland addresses) will by via pallet delivery.įurther photos of this item are below, and a showcase of this lathe can be seen in the video.This project began as a simple request, I wanted the ability to cut metric threads on my Atlas Craftsman lathe and eliminate the hassle of manually changing gears for the lead screw drive. It’s very easy to remove this control if not required – unlike a Myford, it is easy to access the inside of the carriage just by removing a couple of screws.
Again, there is a bit of a “knack” to using this control as the clearance between it and the cross slide handle is a bit limited.
The motor is a single phase 240V 1420 RPM Cub Motor rated at 1/3HP.
#Atlas lathe motor serial number#
The makers plate on the right hand end of the lathe shows that it has the serial number 029920.įurther information about this type of lathe can be found on the .uk website, so please do take a read of that for further information.Īlso included are the following accessories
This is an Atlas 10″ lathe with the model number TV36 indicating it has taper bearings in the headstock with a vertical countershaft and a 36″ bed length.