Hello,
I am currently working on building my first CNC machine, and I need a bit of direction here at this point. I am not sure how exactly to mount the leadscrews at each end. I know that thrust bearings are needed as well as regular ball bearings, but how they all fit into the bearing block I am a little unsure. I have seen some pictures months ago, but cannot seem to find them. Does anyone have any pictures of assembling a bearing block?
As well how do i grind/mount the leadscrew at each bearing block? Does anyone have links or pictures to some detailed information on these subjects?
I built a foundry last summer so I can pour custom pieces of aluminum, and some of the components of the mill are going to be poured. This is going to be similar to some other ones on the net where people have poured their own linear bearings, and uprights etc. I plan on using cheaper pipe, probably black gas pipe, or the varients others are using. How much error will this introduce? I know its not a good idea, but the mill is designed so these can be changed to something better in the future if needed.
Last question: For driving the mill I have done a bit of reading on this forum, and the 270 oz-in. steppers I was going to purchase apparantly are too small for the types of work I plan on doing. So I am upgrading to 1000 oz-in steppers, with a 3/4 6tpi leadscrew. I plan on using the mill for foam cutting, and aluminum work. Would this combination be sufficient? The total length of the mill is planned to be 3ft, and width will be 2.5 ft. Would the 3/4 leadscrew bend alot under the pressures from milling aluminum?
Thank you,
Darren