Hoss ATC Project

[hoss2006]

Made a little video here to answer a few questions.
The spindle and bearings are deflected by this type of power drawbar.
Total movement was .0025 inch.
It does return to zero on release each time.
Should be no big deal especially with the rigid tool rack
I'll be using.
The spindle will rest against it when the drawbar is activated so it shouldn't deflect then.
The collet drops about .060 inch at release.
The tool holder is held pretty tight by the springs.
I tried to rotate it with an allen wrench while holding the spindle lock.
All it did was bend the allen till it popped out.
Hoss
http://www.hossmachine.com

[Bob Adams]

It's Alive thanks to Hoss!!!
I had to make a few changes.
1. I have a Harrison belt kit, the pin comes out the side.
2. The drawbar had to be changed a little, because I didn't have enough threads in the collet. Cut the drawbar back about 5/16 for the spring washers, then tapped a 1/4-20 for a lock washer and allen bolt.
3. I cut a hole and slotted the side plate. Now all I do is take out the two back bolts, to pivot for a belt change.
4. I checked the bearing and collet movement and got the same as Hoss,

[snowshovelbmx]

Hoss I do belive you have started a very good thing here and also maybe made the guy at z-bot a little sad. As I belive spending 50 bucks or so to make your own is way better than the 500 they want for a power drawbar from LMS. I think I speak for everyone when I say thanks!

chris.

[quicksilver02]

Thanks a ton for all of the info on thie Hoss! You've caused me to start gathering parts to build something similar for my SX3.

Bob - Your mods look good. One question... Is the 1/4-20 socket head bolt just to restore the height of the drawbar that you lost when you cut back the shoulder on it? I suppose you could have moved the cam down closer to the modified drawbar, but you probably already had that part built?

-Nate

[JHCHOPPERS]

Hoss,

Nice work. I am working on something simulare with an R8 collect on a BP

Can you post your tool changer macro ?

Thanks,
Joel

[hoss2006]

Nice work there Bob. good solution for the side spindle lock.

Chris,
I don't mean to cost anyone any customers, they have a fine product,
especially the complete tool changer.
But I could never afford it (or bring myself to spend that much)
I know from an email I got that they have sold at least one complete system from my mentioning them here.
I will be making an articulating tool rack later on but nothing as complex as theirs.
My new driver board came today so I can get back to it this weekend.
Have my home switches wired up just need to fine tune the mountings.
If I get the tool rack milled up, I should have it operational maybe Sunday.
Here's a light duty keyless chuck for the tool holders, good Jacobs chucks are on order.
Hoss
http://www.hossmachine.com

[hoss2006]

Joel,
The genius of Mach 3 created the tool change macro, that stuff is beyond me.
You can watch the tutorial video (tool_change) here.
They have the macro for download on the Yahoo forum here.
Don't know if I could legally upload it here.
Go to Files > Macros > Toochanger Macros > M6Start.zip
Extract and replace M6Start.m1s to your Mach 3 folder, for example
C:\Mach3\macros\Mach3Mill
M6Start.m1s already exists in the original install but there isn't any code in it.
replace with the new one.
Watch the tutorial.
Hoss

[JHCHOPPERS]

Originally Posted by hoss2006 Joel, The genius of Mach 3 created the tool change macro, that stuff is beyond me. You can watch the tutorial video (tool_change) here. They have the macro for download on the Yahoo forum here. Don't know if I could legally upload it here. Go to Files > Macros > Toochanger Macros > M6Start.zip Extract and replace M6Start.m1s to your Mach 3 folder, for example C:\Mach3\macros\Mach3Mill M6Start.m1s already exists in the original install but there isn't any code in it. replace with the new one. Watch the tutorial. Hoss

Thanks !

[Bob Adams]

Nate, the 1/4-20 was to put back the material lost

[Bob Adams]

Here's a pictorial for the cylinder hookup.

[Micro Rotors]

Hoss,

Do you have a parts list for this. GREAT JOB ... I want one!!!!!

Bill

[hoss2006]

Power Drawbar parts List

7.5 x 6.0 x .250 aluminum plate(2)
6.0 x 3.450 x .375 aluminum plate(for X2)
4.5 x 1.0 x .1875 steel plate(2)
.750 dia. x 5.0 steel rod (cam,spacers,washers)
.5 x 4.5 bolt(main pin)
.375 x 1.75 bolt (2) pins
.5 x.5 x 1.75 steel (clevis or McMaster Carr #6498K44)
7/16-20 jamb nut
3/4-16 jamb nut
1/8 cotter pins(3)
1/4-20 x .750 screws(6)
5/16-18 x .750 screws(4)
1.50"X0.75"X0.44" BIMBA
120 VAC 4 WAY 2 POSITION SINGLE SOLENOID VALVE\
Spring Washers (4)
1/8-NPT air fittings (3)
1/8-NPT plug fitting
Air line (6ft)
Compressed Air Source (100 PSI)
110 VAC switched source
Sieg X2 or other Minimill