CNC Projects

4th Axis Ideas

Home
USB to CNC
CAD
How To's
MPG and Home Switch Idea's
Mill2Lathe
Tool Setter
4th Axis
Videos
Cyl Force
Lathe
Clamps Pic's
Favorite Links
Contact Me

I decided to stay with my 495 holding torque stepper motor  and timing pulley ratio and add the Taig lathe chuck to fit the 3/4" ER32 collet. This way I can remove the Chuck and use the ER32 collets.
The pictures will show the Newer 4th axis setup.

2011-03-25_1314.jpg

The ER32  fit the 3/4" ID bearings,  just a nice slip fit.

Need to make a Swarf/ Dust Cover
mvc015f.jpg

4thside.jpg

Added a spring loaded block to clamp the ER32  for the wrench.
Also added a chip/swarf  plastic cover.

block1.jpg

wrench1.jpg

Motor fits in a milled pocket

Small Ball Bearing added for Backlash takeout.
May add another bearing below.

4thback.jpg

4thfront.jpg

mvc-018f.jpg

mvc-019f.jpg

I seen this gearbox used a while back. Thought i give it try, only cost around $17.00. So far it looks like its got a lot of power. Drawback is, it only has 18 to 1 ratio. I'm waiting on a ER32 arbor to replace the spindle. This was a good idea except I didn't like the motor.

gearsteppermotor.jpg

4th Axis with 495 oz-in holding power stepper motor,
30T Timing Pulley and 15T Motor pulley.

With Bearing Preload adjustment.

Rear View Click to Enlarge pictures
4th_axis2.jpg

All the Parts
parts1.jpg

Mounting Plate
mount.jpg

Note:
Shaft inprovement, would be to machine the Shaft with 3/4-16 NF threads on both ends. Then the hole thru the Shaft could be used for long small stock. The other end would fit a 3/4-16 threaded Chuck.
These bearings are 3/4" Timken wheel axle bearings.

Shaft and Bearings
shaft1.jpg

Bearing Housing
rside.jpg

Bearing Cups
bearing_cups.jpg
Housing was made from scrap aluminum

Rear Bearing
bearing_cone.jpg

Shaft with preload adjustment
back.jpg

Click here for link to 4th Axis CNC Indexer Timing Pulley Maker software.

4th Axis CNC Indexer Setups

setups_001.jpg

cnc_indexer.jpg

Home

Copyright 2008  Bob Adams All rights reserved