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Recent content by pepo
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Cutting off carbide endmills
Have to agree with everyone so far. Get a 1/16 or 1/32 wide resin bond diamond wheel. For these wheels to live they need to be mounted on an adapter for the grinder that assures they will run true. It is pretty easy to pound one out (tear it up)if it runs out each time you use it. I usually put...- pepo
- Post #12
- Forum: CNC Machining
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Mysore Kirloskar Ltd.
There is one at work (15") I have run off and on for years. Not a high end machine,but a decent lathe. Much better than most of the asian stuff. FWIW. -
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Need info on chasing dial.
The usual way to singlepoint on a lathe without a chasing dial is to leave the half-nut engaged and just reverse the spindle rotation to get the tool back over in position for another cut. After backing out the tool of course. Wouldnt advise this for threading to a shoulder unless you like loud...- pepo
- Post #11
- Forum: Antique Machinery and History
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Box Turning Tool
With a box tool if you run the rollers on the stock ahead of where the chip is made this will control concentricity between the stock and the turned diameter. But,the size of the turned diameter will vary as much or more as the size of the stock does. Running the rollers on the turned diameter... -
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Moore G18 jig grinder.... where is "spindle" speed info ?
Cant tell from the picture,but,if the motor has a 3/8 hole in it for the wheel shank it is probably a 1 HP head that runs at 40,000 @ 100 psi. If its a 1/4 hole its for smaller holes and runs @ 60,000 @ 100 psi. -
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Standard vs. Fine Pole mag chucks
A magnetic parallel with with perfectly designed laminations wont increase the magnetism. It may diffuse it to a small degree but the magnetic losses through the parrllel would offset this. Thats why there are fine lamination chucks made. Im sure youve noticed there are sweet spots on the chuck...- pepo
- Post #6
- Forum: Abrasive Machining
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dressing a profile on a diamond wheel
You grind the diamond wheel with the green wheel. Just treat the diamond wheel like its a workpeice as far as its speed and run the green wheel at its recomended rpm. To work right the green wheel needs to be dressed with a diamond in a radius dresser. To put a 5/32 radius in a diamond wheel... -
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Tramming a mill
Jeez...........A couple of you wing nuts need to breathe in a paper bag for a while. Push on the quill,6" circle,8" circle,.0001 indicator,.0005 indicator,quill up,down,in the middle,its all the same. No wonder so many shop owners are assholes,they have to pay for all this princess bullsh!t. -
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How should I level my Bridgeport mill?
Lots of opinions here,here is another one. Saw some wedges out of some scrap and drive them under the corners that are off the floor. As has already been stated the reason for leveling a machine is to eliminate twist,important with a lathe. Anyone that tells you need to level your mill or your...- pepo
- Post #16
- Forum: Bridgeport / Hardinge and USA Light Iron
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How do YOU measure your Female pitch diameters?
I feel your pain,but,there isnt an easy and cheap way out of it. Checking the pitch diameter to death on an internal thread only tells you what the P.D. is. It doesnt tell you anything about flank angle,major diameter,lead error,out of round ,burrs or any of the other stuff that will keep the...- pepo
- Post #13
- Forum: CNC Machining
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Lining up pattern across threaded parts
If I understand your post correctly you are asking how to draw this,not how to make it,right? Having a little trouble visualing your assembly but possibly a callout specifying an angularity of the grids or marks with the two details assembled at a certain torque value. -
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synchronizing threads
Without knowing anymore of the details,such as,is the rod used to only hold these nuts in place for some additional operations or if the rod is a part of the entire assembly the simplest solution would be "thread differential". You would take the rod you made and face the threaded portion off... -
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synchronizing threads
Need more info. Are the nuts already threaded and if so are their threads timed to the feature? -
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OT - T Shirts
Victoria Secrets,if you dont mind rhinestones. They may not have a XXX. -
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Holding small parts in CNC lathe
The 5C collet block sets (a hex and a square) that are all over the place are handy for holding small or thin peices in a lathe. I resort to this at work all the time. Its usually due to laziness because I dont want to take that 10" 3 jaw off, put the collet nose on,do a 10 minute job and then...- pepo
- Post #10
- Forum: CNC Machining