Thread: Your latest project

Well done Bob,
simple and successful, could it get any better.

Phil

I made a crank handle to hand crank my lathe It's made from 100 % recycled materials.

Originally Posted by welder

I made a crank handle to hand crank my lathe It's made from 100 % recycled materials.

Come on Andre, you're only telling us a quarter of the story. I can see a socket extension and a handle. How does it work?

Bob.

Originally Posted by krisfarm

I originally made this impact driver tool changer back in 2009 and posted it here post #193. It has worked reasonably well but on occasions with one particular tool it sticks and I have to give the drive dogs a little tap with a brass hammer. I think the main problems are the impact driver cannot be held down firm enough and it is a bit small to dislodge the 40 series taper on this mill, it is also hard to control the amount of tightening.I felt it needed a redesign. I remember reading posts from DaveJ about his intention of fitting quick release tool changers to his mill, in his case two of them so I made contact with him, working on the theory that two heads are better than one. After going through all the issues Dave suggested fitting a Ball Thrust bearing my original set up had thick greased washers. I tried this it did improve it slightly but I still had the occasional hang up. Dave also mentioned that he had seen draw bars that were captured in place.
It was time for another modification so I sketched up a new draw bar design and a thrust bearing housing that could be added to my existing design. This would enable me to change back if it did not improve the situation. After installing the new set up and giving it a test for the last week or so with all of my tooling I have had no hang ups. As the draw bar is now captured when undoing it, I have found that I can reduce the compressors line pressure down to 60 PSI instead of the 80 PSI of the original set up.
A few photos and my sketch to help understand it. Thanks to DaveJ for his assistance. I have changed the impact drivers handle back to the original style as shown in the picture of the total assembly mounted on the top of the mill.
Bob

And while I'm at it....

Your work is too good to be displayed in piddly little photos Bob. I don't know what you use as a resizer but large ( to fit a 1024 x 768 screen ) would go some way to doing it justice.

Bob

Bob,
Thanks, I used 600*400 as I thought I read somewhere that there is of eight photo limit, by making them smaller I squeezed nine in. Next time I will throw caution to the wind and go for bigger ones.
Bob

My latest
start with $200 bucks worth of 6061 aluminium
add 10hrs worth of machining and you get a set of custom made triple clamps
there for a custom bike a friend is making i will get some pic's of the bike once he has it together
2013-03-13 17.25.24-900.jpg
2013-03-13 17.38.43-900.jpg
made a wood template to make sure the fitup was correct
DSC_1980-900.jpgDSC_1982-900.jpgDSC_1988-900.jpg


there are more photos of the process here

cheers
Harty

They came out nice, the blend on the curves came out great.

Dave

Certainly some work there Peter. Well done. The process photos reveal some of the painstaking effort involved.

I have to get myself a Wohlhaupter, it's starting to look like I'm the only one without one.

BT

Outstanding as usual Pete. Your mate must be rapt.

Phil

Nice. Does the 10 hours include programming?

Originally Posted by Bryan

programming?

programming? You mean it wasn't done with a hammer, cold chisel and file?

Originally Posted by harty69

My latest
start with $200 bucks worth of 6061 aluminium
add 10hrs worth of machining and you get a set of custom made triple clamps
there for a custom bike a friend is making i will get some picks of the bike once he has it together
cheers
Harty

Nice work Pete. How did you index for the V cuts? they look tricky to me.

Hi Brian

yep includes programming its the easy bit but doesn't include head scratching swearing and shoveling off 3/4 of a rubbish bin full of swarf
the hard part was working out how to do it and maintain the correct steering angle as the frame is an old kawasaki 900 and the front end is off a gsxr 1100

BT
you defiantly need a Wohlhaupter it made this job a whole lot easier as 4 of the bored holes needed to be matched very closely and one is a h7 interference fit

RC
the hammer cold chisel and file are only used when we have to put it together

cheers
Peter

Originally Posted by Brobdingnagian

Nice work Pete. How did you index for the V cuts? they look tricky to me.

Hi josh

tricky would be one word for it
there is a hint in this pic look for blue
2013-05-13-21.44.49-900_595.jpg
its a digital protractor there surprisingly accurate as a reference
but the process was machine the flat in a specific distance then using a facing cutter with the head tilted to 31.7 deg step down and across to pickup the edge of the flat section
this worked well and both sides are within .5mm
then flip the part placing the head vertical again and laying the part in the vice and face parallel picking up the edge again as below
2013-05-14-22.41.21-900_595.jpg
because all the other machining is done to a specific dimension this worked well for this aplication

cheers
Harty

Originally Posted by harty69

Hi josh

tricky would be one word for it
there is a hint in this pic look for blue

its a digital protractor there surprisingly accurate as a reference
but the process was machine the flat in a specific distance then using a facing cutter with the head tilted to 31.7 deg step down and across to pickup the edge of the flat section
this worked well and both sides are within .5mm
then flip the part placing the head vertical again and laying the part in the vice and face parallel picking up the edge again as below

because all the other machining is done to a specific dimension this worked well for this aplication

cheers
Harty

I did not pick up on the digital protractor... Very clever, I'm gonna put that one in the memory bank..
-Josh