Bridgeport Resto

If you have a lathe, making proper spacers would be a good project! :)
 
Well its been a while but I finally got the mill running!!
Ill share some pictures of the progress
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Got the drive mounted and wired up with my controls panel.
Even have a RPM meter where the sensor is mounted to the spindle so I am able to get very accurate RPM readings at the spindle :)
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Got the table and vice trammed in and made some test cuts on some T-nuts I had lying around to fit my table
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I must say I am liking it so far, runs great! very smooth and noise or vibrations whatsoever and everything works like the power feed :)
Drive still needs to be dialed in still like ramp up and down times and etc... but they will come in time.
Also I very happy with the 2-pole motor choice with the pulley configuration and the High/Low gearing on the mill I have a huge RPM range to work with even at motors full torque.
I have a RPM chart I could share if anyone is curious or would like to do something similar.
 
Nice job! I would be interested in learning more about how you did the spindle speed sensor. Would you post the details? I'm most interested in where and how you located the pickup and what it is actually ''seeing''.
 
The Bridgeport is looking great. Were you able to get the table issues worked out? Would definitely like to see your rpm chart. Hoping to get a little time to work on mine soon. Mike
 
Here is my RPM chart, because I dont have what you may call a fancy motor($$$) I will only have full torque to around 15hz which is perfectly fine for me with my pulley's and gearing gets me down to around 70RPM at full torque I could always go slower to get the RPMs even lower as shown on the table.
RPM Speed Range.jpg
RPM Speed Range.jpg
 
JimDawson said:
Nice job! I would be interested in learning more about how you did the spindle speed sensor. Would you post the details? I'm most interested in where and how you located the pickup and what it is actually ''seeing''.
Click to expand...

As for the sensor, its a hall sensor and I located the magnet on the pulley mounted to the spindle that way it is picking up the RPM of the spindle not the motor
I wish I would have gotten better pictures but you can just barely see the sensor here.
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Because there is a 8:1 reduction in the High to Low gear selector on the mill I am working on a logic board that will do the division and then display to correct RPM at the tool when the machine is in low gear. so for now the RPM meter is only really relevant when in high gear but I am working on that. but that's another project :)
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