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Blog series by Mainiac Matt updated 12-08-2017 09:21 PM 5 parts 5395 reads 20 comments total

Part 1: CNC router plans and back story

11-29-2017 09:14 PM by Mainiac Matt | 7 comments »

Hi all, After years of planning and several different design variations… all with a tight budget in mind, I am finally building a CNC gantry robot. I have been an active dumpster diver at work for linear motion and electrical components replaced on existing machinery, or salvaged off of scrapped machinery. But I could never get to the point where I could build the machine I wanted within the puny budget I had. However, I finally pitched this project successfully to my boss at wo...

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Part 2: Z-axis motor mount fabricated and installed.

12-01-2017 07:52 PM by Mainiac Matt | 1 comment »

Fabricated the motor mounts and bored out the motor shaft coupler to fit the metric ball screw shaft…. The base has been mostly done for a while now…. but I couldn’t detail how we would mount the bearing blocks for the long axis ball screw until I had them in my hands and could verify the geometry… so we banged those out. Here’s the base upside down on the bench… Mechanically… things are wrapping up… I’m just having a hard t...

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Part 3: Electronic Package going together lickity split...

12-01-2017 08:42 PM by Mainiac Matt | 5 comments »

When I converted my bench top mill to CNC control, I used a really slick little unit called a Gecko-540, that combined the stepper motor drivers, a break out board (with limit switch and spindle signal hook ups) all in a box the size of a box of checks… And all I did was mount it into a partitioned off area of my home build stand (wood construction) with a power supply. And while this set up was very inexpensive, easy and totally adequate for a hobby shop, this router buil...

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Part 4: Using a CNC to make a CNC... the bots are taking over!

12-05-2017 10:25 PM by Mainiac Matt | 1 comment »

The key to this design is an accurate solid model. Here you can see the riser plates for the gantry as part of the master level assembly. All the holes and relief cuts are transferred over from the mating components and should (knock on wood) line up perfectly. Once I’m confident that all the required geometry is complete, I isolate the component to be cut. For the Aluminum parts, I make a dimensioned drawing for use in the machine shop. But for CNC cut parts I make a 2...

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Part 5: It's Alive (almost)

12-08-2017 09:21 PM by Mainiac Matt | 6 comments »

Got a lot of assembly work done today. Tested the X & Y axis using a cordless drill. ’’‘ Here's a YouTube video of the motion https://www.youtube.com/watch?v=SnWdjIwWqxA

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