Homemade CNC v2.0 Machine

DIY (do it yourself) homemade cnc machines advice and builds
vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 6:21 am

Hi guys,
Did you know that you can make your own CNC v2.0 Machine at home?
I came across A video detailing how to make this machine using materials from a DIY store.
Link: https://youtu.be/mJ-TZvFpY58
Author: Norbert Heinz
Machine Name: CNC v2.0
This is a homemade CNC machine composed of sample bearings as well as materials from a DIY store and is built with simple low tech tools. It is driven by cheap low powered kit DC motors.
Attached on the z-axis carriage is a ball pen.
Attachments
complete machine.PNG

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 6:53 am

The main tools used in making this machine include:
A Drill press,
Metal saw,
Some file tools,
Ranges, and
A set of 6 mm taps
Attachments
tools.PNG

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 6:57 am

Let us now go through the steps take in making this machine.
Step 1: Cutting the iron bars
Using an angle joint, cut the iron bars into the desired length. About 4 cuts are enough to bring the bars to the right length.
Attachments
cutting of iron bars.PNG

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:01 am

Step 2: Mounting the ball bearings

Triangular tubes are used as linear guides for the x and y axes.
Four ball bearings are attached to a piece of square tube with the lengths of approximately 20 cm.

The inner diameter of the ball bearings is 10 mm. the outer diameter should be large enough such as about 30 mm or so. The edge length of the iron square tube is 25 mm. at least a 10 mm nut must fit inside.
Attachments
ball bearings.PNG
mounting of ball bearings.PNG

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:07 am

Step 3: Drill holes on the edge of a square tube
The drill hole for the ball bearing must close to the lower edge of the iron tube but not too close. There must be an offset between the drill holes at two side of the tube because the balls and nut used to mount the ball bearing should not touch each other.

Some holes are made at the edges. To make these holes, 2 aluminum angles are used as guide for the iron tube. Drilling is done in 3 steps. You first start with 3 mm diameter, followed by 6 mm, and lastly 10 mm diameter.
Attachments
holes at the edge.PNG
drilling of holes.PNG

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:13 am

Step 4: Cutting 6 mm Threads

Three taps are needed to cut the threads. The, bottoming tap which is marked by one ring at the shaft, the Intermediate tap marked with two rings on the shaft, and the Taper tap marked with no ring at the shaft.
A 6 mm bolt should fit to the hole.
Attachments
six mm threads.PNG
cutting of 6 mm threads using different taps
six mm threads.PNG (208.74 KiB) Viewed 1402 times
six mm bolt to fit to the hole.PNG
A 6 mm bolt fitted to the hole
six mm bolt to fit to the hole.PNG (116.04 KiB) Viewed 1402 times
Last edited by vinkiP on Fri Jan 29, 2016 7:36 am, edited 1 time in total.

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:20 am

Step 5: Assembly of x-carriage

Mount the bolt with the 6 mm thread and the ball bearings on the square tube. That is the first half of the X- carriage.
The other part will be running on a flat aluminium bar. Both halves are connected through a compound made angle profile and a square tube.

Step 6: Assembly of y-carriage


The y-axis carriage runs on the square tube. It is mainly composed of 10 mm threaded bars connected through flat iron bars. The ball bearings allows smooth movement along the x and y axis.
Attachments
x-carriage.PNG
Assembling of X-carriage
y-carriage.PNG
Assembling of Y-carriage

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:23 am

Step 7: Assembly of z-carriage

The z-axis is guided by ball bearings running on round tubes. Its carriage is based on two aluminium angle profiles.
Attachments
z-carriage.PNG
z-carriage.PNG (140.72 KiB) Viewed 1402 times
z-carriage 2.PNG

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:26 am

Step 8: Mounting the thread bars for the drive.

The threaded bar is mounted using four nuts and two ball bearings with an inner diameter of 6 mm. One ball bearing is to the left and the other to the right of the joint. Tighten the nuts such that the ball bearings are pressed against the angle joint.
Attachments
mounting of threaded bars.PNG
Mounting of threaded bars to the drive

vinkiP
Posts: 73
Joined: Sun Aug 09, 2015 10:13 pm
Location: bermuda

Re: Homemade CNC v2.0 Machine

Postby vinkiP » Fri Jan 29, 2016 7:31 am

Step 9: Connecting the Carriages to the Four Drives

The carriages are connected to the drive through the 6 mm threads and the 10 mm bolts. Put some lubricants on the threaded bars to reduce the friction. You need four drives in total: Two for the x axis, one for the y axis and one for the z axis.
Attachments
two drives for x-axis.PNG
Two drives for X-axis
y and z axis drives.PNG


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