Rick Fisher
12-31-2009, 10:23 PM
I am hoping there is someone here who has done this before..
There is a member here who is a "wide belt mechanic" .. I seem to remember..
Anyway.. I have a used SCM wide belt.. It doesnt have motorized lift / fall on the table.. The reason I want it is that each full revolution of the wheel is 1/4 of a mm..
So to lower or raise the table 1" is about 100 turns.. (could be 80) ..
For actual sanding.. its great.. For lowering the table 3".. its painful.. it sucks..
I have asked SCM for a price on the parts.. but suspect I am looking at $1500.00
I need a gear motor, momentary rocker switch, 2 pulleys and a V-Belt..
Then I need an upper and lower limit switch..
Those parts, excluding wire are about $150.00 at Burden sales..
My question is .. I would like to have an additional button that when pressed, caused the gear motor to turn for say.. 1/2 a second.. or 1/4 of a second.. It would cause the table to rise by 1/4" mm..
When sanding.. I can just press the button after each pass. Really handy..
So .. would that be a mechanical thing ? a timer? I have no idea.. Basically a switch that when pressed gives a really short burst of power.. but exactly the same each time..
Or.. I could set it up so it caused one revolution of a pulley ? Make the pulleys the right size, so 1 revoltution was the right amount ?
Can anyone shed some wisdom here?
I am including a picture of what the gear box looks like and how it will attach..
http://i335.photobucket.com/albums/m455/jokerbird_photo/P1150349.jpg
At the bottom of that Gear box is a shaft..
http://i335.photobucket.com/albums/m455/jokerbird_photo/P1150354.jpg
I can put a pulley on that shaft, and hook a motor up to it.. no problem, that is how SCM likely does it ..
There is a member here who is a "wide belt mechanic" .. I seem to remember..
Anyway.. I have a used SCM wide belt.. It doesnt have motorized lift / fall on the table.. The reason I want it is that each full revolution of the wheel is 1/4 of a mm..
So to lower or raise the table 1" is about 100 turns.. (could be 80) ..
For actual sanding.. its great.. For lowering the table 3".. its painful.. it sucks..
I have asked SCM for a price on the parts.. but suspect I am looking at $1500.00
I need a gear motor, momentary rocker switch, 2 pulleys and a V-Belt..
Then I need an upper and lower limit switch..
Those parts, excluding wire are about $150.00 at Burden sales..
My question is .. I would like to have an additional button that when pressed, caused the gear motor to turn for say.. 1/2 a second.. or 1/4 of a second.. It would cause the table to rise by 1/4" mm..
When sanding.. I can just press the button after each pass. Really handy..
So .. would that be a mechanical thing ? a timer? I have no idea.. Basically a switch that when pressed gives a really short burst of power.. but exactly the same each time..
Or.. I could set it up so it caused one revolution of a pulley ? Make the pulleys the right size, so 1 revoltution was the right amount ?
Can anyone shed some wisdom here?
I am including a picture of what the gear box looks like and how it will attach..
http://i335.photobucket.com/albums/m455/jokerbird_photo/P1150349.jpg
At the bottom of that Gear box is a shaft..
http://i335.photobucket.com/albums/m455/jokerbird_photo/P1150354.jpg
I can put a pulley on that shaft, and hook a motor up to it.. no problem, that is how SCM likely does it ..