1. Home
  2. ⏣ General Metalworking
  3. Weak but reliable metal glue?
  4. Page 2

Weak but reliable metal glue?

Your reasons Don, are exactly why owning metalworking machines is so great.. fabricating simple parts builds a foundation of experience that will always be useful again in the future. Experience in making simple parts just naturally leads to the ability to make more complex parts. Having to use halfassed parts/materials to try to accomplish a task is utterly frustrating compared to having the ability to make a quality part that improves the performance and/or reliability of device/machine/tool etc.

An expanding adapter was one of my early lathe projects (an expanding shaft to adapt a hand crank to a benchtop lathe spindle bore, on a model without low/variable speed capability), and I haven't/wouldn't hesitate to make others for different applications.

Reply to
Wild_Bill
Loading thread data ...

========= see our class version for an Emco-Meier Compact 10

formatting link
A spindle crank offers a great deal of utility to home/hobby shop machinists, particurarly when threading to a shoulder and/or using metric change gears. Large diameter fine threads as for camera/lens adapters are also much easier using the hand crank.

-- Unka George (George McDuffee) .............................. The past is a foreign country; they do things differently there. L. P. Hartley (1895-1972), British author. The Go-Between, Prologue (1953).

Reply to
F. George McDuffee

On our Bridgeports, the direction of rotation is not linked to the mechanical, IN or OUT of back gear. so you can always run the spindle in any direction regardless of "speed range". I guess the power downfeed would be a problem though. :-) ...lew...

Reply to
Lewis Hartswick

On Series II Interact 2, back gear reverses the rotation.

This would not be a problem, ordinarily, as I could command the mill to run "in reverse" when drilling, milling etc and it would be great. However, when rigid tapping, the control wants to run the spindle "forward", which in back gear actually means reverse. This is the problem with rigid tapping.

i
Reply to
Ignoramus30138

You need to configure EMC2 to reverse it's spindle direction control depending on the selection of the high/low gear range.

Reply to
Pete C.

Yep. I think that I can do it with some and2 elements.

i
Reply to
Ignoramus30138
[ ... ]

I believe I suggested back when you were early in this project that you set up a switch to sense the lever in the back-gear position, and use that to either tell EMC2 to command the opposite direction, or simply have it work a relay to interchange the forward and reverse pins on the command to the VFD.

Admitedly, I was not thinking of rigid tapping -- but things like burning out end mills or drill bits because you are running them backwards.

Good Luck, DoN.

Reply to
DoN. Nichols

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.