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CNC Master Checklist
Do you have all the bases covered for your CNC conversion or refit? Here is a master checklist I drew up to try to organize things from a top down list oriented perspective. Where I have some deeper information to contribute, I've tried to provide links to some of the other pages on this site.
Links & Articles
|Axis Drive Motors|
|Motor Type||Stepper||Usually cheaper, simpler, can lose steps. Power peaks at 1000 rpm.||Stepper, Servo & Backlash Simulator|
|Servos||Higher performance, more expensive, more complex. Power well above 1000 rpm, fater rapids, greater accuracy due to closed loop operation.|
|Encoders||Separate shielded cable from motor power cable? Connector type? CAT-5? Microphone? DIN?|
|Transmission||Direct Drive||Coupler: Helical Beam, Oldham, etc.||Simple. No torque or resolution multiplication.||CNC Lathe Conversion Direct Drive Details|
|Timing Belt||Most common. Allows torque and resolution multiplication.|
|Gear Head||Harmonic Drive||Need to make sure its a low/no backlash drive type such as a harmonic drive.|
|Chain||Usually found only on lower resolution systems such as plasma tables and routers.|
|Motor Connectors & Cables||Got shielded cables? Connector type?||CNC Lathe Conversion Driver Electronics & Motor Cables|
|ACME Leadscrew||What's already there. Likely to have significant backlash. Some backlash can be adjusted out with a split nut and Delrin nuts have pretty low backlash.|
|Ballscrew||Low or no backlash. What the "pros" use.|
|Proper Leadscrew Mounting||You have to use angular contact bearings to properly mount the leadscrew.|
|Rack & Pinion||Usually found only on lower resolution systems such as plasma tables and routers.|
|Belt Drive||Usually found only on lower resolution systems such as plasma tables and routers.|
|Chain Drive||Usually found only on lower resolution systems such as plasma tables and routers.|
|Ways||CNC Dictionary discusses different types of slideways|
|Rails||Usually found only on lower resolution systems such as plasma tables and routers.|
|Linear Slides||Very high precision, lower rigidity tha nconventional ways. Most common design for the average machining center.||CNC Lathe Gang Slide|
|Conventional Machine Ways||e.g. Dovetail and Box Slideways||Less precision, more rigidity. Common on older manual machines and very heavy duty CNC machines.|
|Home & Limit Switches||Are you going to combine home and limits to save inputs?|
|DC Power Supply||CNC Lathe Conversion Driver Electronics Page|
|Breakout Board||CNC Cookbook Breakout Board Article|
|Coolant and Accessory Control|
Industrial, or Just a Basic PC?
Notebook? Notebooks have problems with a lot of breakout boards.
|CNC Lathe Rackmount PC|
|Machine Controller||Mach 3?||CNC Software Overview|
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