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fretsman
01-19-2008, 07:39 PM
Thought some of you might like this idea as it makes changing the belt a lot easier. While the variable speed guys may look down upon it, I just bought the CNC and I'm not shelling out more money for that upgrade just yet...lol!

The stationary plate is mounted with a recessed 1/4-20 button head and a slip fit hole for the 10-32 pivot screw at the back corner. After the first pic, the next 2 pics show it assembled with a temporary 10-32 and a nut to hold the upper adjustable plate in place.

Today I made the locking lever and slip nut to finish it off. It makes belt changing so much easier with one lever move and that's it as the 10-32 in the back corner is one of the nylon locking screws that won't back out and lets it pivot beautifully. Much like a bridgeport mill.

Some pics for you:

http://www.fretsonthenet.net/images/MotorPlate/motorplatelower.jpg

http://www.fretsonthenet.net/images/MotorPlate/motorplateassldleft.JPG

http://www.fretsonthenet.net/images/MotorPlate/motorplateassld.JPG

http://www.fretsonthenet.net/images/MotorPlate/motorplatelevertopl.JPG

http://www.fretsonthenet.net/images/MotorPlate/motorplatelevertopr.JPG

http://www.fretsonthenet.net/images/MotorPlate/motorplateleverbot.JPG

mikkojay
01-19-2008, 08:51 PM
Nice job man-I hope to make something similar as soon as I find a better motor.
-Mike

Stepper Monkey
01-20-2008, 01:19 AM
That is a nice setup. I think the idea would actually be just as handy for those of us with variable speed setups as well as they often use the same belts and pulleys just with DC motors, and even if they don't they still have some type of belt to contend with at least at any rate. I'll have to try something similar, thanks for the idea.

CROSSHATCH
01-20-2008, 01:27 PM
Fantastic job :)


-Speed

under-dog
01-21-2008, 01:08 PM
Very cool.
I think I just found my next upgrade.....


With that said would you mind posting the DXF files you used?

It would be much appreciated.

Also where did you get the slotted nut for the bottom of the lockdown handle (the handle as well for that matter).

fretsman
01-21-2008, 01:32 PM
Thanks for the comments fellas, as for a dxf, sorry, there is none as this was made on a bridgeport manual machine but there isn't much to it if you think about it.

The handle and locking nut were also made by me as well.- :)

under-dog
01-21-2008, 06:06 PM
Thanks for the comments fellas, as for a dxf, sorry, there is none as this was made on a bridgeport manual machine but there isn't much to it if you think about it.

The handle and locking nut were also made by me as well.- :)


Oh well thought it would at the least give the layout. Easy enough to figure out as you said though. I wasjust being lazy.


The handle and nut look professionally made good job.

I may do something mure simple for the hande myself. Even putting the allen screw to lock it out there is easier than the setup for the stock mount

under-dog
01-22-2008, 12:29 PM
Is that 1/4' thick aluminum plate you used?

fretsman
01-22-2008, 04:01 PM
yes, sir, that is correct and the blanks were 4" X 4" cut diagonally-

under-dog
01-24-2008, 09:47 PM
You inspired me.

Mine isnt as pretty though.

I made a few things different. I press fit a nut for the lockdown with a custom washer and made a bushing/cap for the pivot so the bottom plate gets locked down snug and the top plate has a smooth bushing to pivot on. The lockdown nut comes off the bottom. The layout was tigh on the pieces of Al I had. But they were free so..........

I may get a handle some day....next time I order from an industrial supplier. I want to get the kind that can slip the bolt an reposition the handle as the area it in is so tight it will be impossible to get a full revolution. For not the BHCS is good as it is discreet.


I CNC'd it


It is far easier to use and far more stable with the at 1/4-20 holding it down, the pivot adjustment on the other side of the motor and the double thich plate. It seems to get less vibration from the motor. Do you agree?



Anyways thanks for the inspiration. I was planning on doing something one day but hadent thought it through yet. Your setup and work gave me a good basis to start with.

thanks

fretsman
01-25-2008, 05:13 PM
I do agree, mine feels more stable as I think it's due to the stacked plate design and I'm sure the 1/4-20 button head does help as well.

Glad I inspired you, as it's least I could do since the people on this forum have helped in so many ways!