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Author Topic: Index pulse on bridgeport boss 4 seris 1 2hp verry head  (Read 6011 times)

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Index pulse on bridgeport boss 4 seris 1 2hp verry head
« on: January 29, 2008, 05:00:19 AM »
Anny one have suggestions on where to put a index pulse pick up?

Thanks
Roy

Offline Hood

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #1 on: January 29, 2008, 05:23:59 AM »
This is how I did mine, its not perfect as when in the low gear range its still reading the full spindle speed, however its near enough to 1:10 so I can still tell approx what the spindle speed is.
Hood

Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #2 on: January 29, 2008, 06:17:04 AM »
Hood:

Thanks for the photo.  How are you fastening on to spindle or what ever?  That must be the top of the belt housing?

Thanks fore your help
Roy

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #3 on: January 29, 2008, 06:55:15 AM »
All I did was make up a piece of of delrin to fit into the top of the spindle (actually its not the spindle but a shaft for supporting the pulleys I think) This piece had a hex milled in it to locate a nut then a slightly smaller hex below that, I then split it as you can see in the pic below. When the bolt is tightened it draws up into the Delrin and expands inside theĀ  hollow shaft.
Hood

« Last Edit: January 31, 2008, 07:09:20 AM by Hood »
Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #4 on: January 31, 2008, 07:02:33 AM »
Thank You Hood  Most helpfull  ;D

Roy

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #5 on: January 31, 2008, 04:44:57 PM »
No problem, as I said the only drawback is the low gear range still gets read as full speed range but its near enough 10:1 to just mentally knock the last digit off the end to get the speed.
Hood

vmax549

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #6 on: February 03, 2008, 03:51:36 PM »
HOOD did you sneak into my shop and look at my setup?(;-)

THe Bridgy reduction is 9:1 you CAN set up mach to display the correct rpm when in low range based on the spindle setup you and I have. ART added in the fix a while back, It works very well

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #7 on: February 03, 2008, 04:00:00 PM »
You know what they say, great minds think.... oops thats not right, in my case its more like Fools seldom differ :D
Thanks, I will look into that although its near enough for me I suppose I might as well have it right :)
 Hood

vmax549

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #8 on: February 03, 2008, 04:04:40 PM »
If you need any assistance just drop me a line(;-)

Have you tried semi rigid tapping yet???  THat too works very very well with your/my/our setup(;-)

TP

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Re: Index pulse on bridgeport boss 4 seris 1 2hp verry head
« Reply #9 on: February 03, 2008, 04:10:56 PM »
I dont have my spindle controlled by Mach so dont think that will be an option for me. The Bridgeport will be going shortly anyway so I dont think I will ever have the spindle controlled by Mach.
  I am in the middle of a retrofit of a Beaver mill, quite a bit more rigid than the Bridgeport and the X travel is 32inch and Y 16 inch compared to the Bridgeports 18 and 12. It will be much more suited to the typed of work I do. Would like to keep  the Bridgeport but just dont have the room :(
Hood