Jump to content
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
Strawberry Orange Banana Lime Leaf Slate Sky Blueberry Grape Watermelon Chocolate Marble
4DThinker

2nd CNC purchased for dedicated use?

Rate this topic

Recommended Posts

Most commercially made routers use rectangular tubular steel for framework. My machine has a moving table design. Less mass to move than the steel gantries but takes more space. Linear rails/bearings need to have frequent lubrication. Mount them is such a way that chips don't fall on them. Ball screws are universally used for the Z-axis, sometimes for the others also. My machine has them on all axis. Some machines will use the cheaper helical rack & pinion. Ball screws can be adjusted to provide almost no free play. Much harder to do with rack & pinion. Machine the top of the table in place with the router spindle. 

Are you using a PC for a controller or a real controller? Will the control incorporate a look ahead function so the momentum doesn't cause overshoot? Steppers or servos? Will you install reference pins? How will you dissipate the energy to slow the feed? How many lines of code will it look ahead with? Will the control have helical interpolation? Will it be able to move all axis at the same time? All these and more affect what the machine can do, how fast and accurately. 

Share this post


Link to post
Share on other sites

I'm using ball screws and linear rails on all three axes.  I started with a tinyG controller and steppers from an unused X-carve kit.  I have the whole CNC assembled, and it turns out the steppers don't have enough torque to turn the Y axis without losing steps.  I bought larger steppers which I thought would work but the tinyG doesn't have enough oomph to turn all three axes (4 steppers) at the same time without complaining.  I like the tinyG as it has great acceleration/deceleration routines built in, but apparently isn't powerful enough on its own.  So I'm stalled at the moment.  I need a controller+driver combination, preferably something with included controller software.  

 

4D

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Who We Are

Operation Ward 57 Challenge Coin Display Project

We are a woodworking community with an emphasis on sharing and learning the skilled craft of woodworking and all of its related disciplines. Our community is open to everyone who wishes to join us. We support our American veterans and active duty, being a veteran is not a prerequisite to join. Join us now!

Objective

Air Force Command Center Plaque

Of course just like most online woodworking communities we are centralized in the arts, crafts, and trades that are woodworking. But, we have another focus in our Patriot Woodworker community, we are the only woodworking community that was founded on our care and concern for our disabled veterans.

Volunteer

Patriot Woodworker Volunteers

The Patriot Woodworkers are an all volunteer community, from the staff and hosts who run our online woodworking community to the members who frequent our forums, you'll find volunteers in all of us. We are not on a payroll, unless you consider the spiritual rewards gained from volunteering, as compensation.

Education

Logging

One of the many projects we are working on is a wiki for our online community. A wiki is a great way for woodworkers and enthusiasts to share their knowledge to others, and to impart their knowledge for others to learn from, and utilize as well for their own benefit. We hope you'll consider being a wiki contributor.

×