EXPERIMENTING,
WITH A SLOWER LATHE SPEED,
WHEN TRIMMING SIDE OF CUE TIP-
SEEMS LIKE SLOWER IS BETTER,
FOR ME"
WITH A SLOWER LATHE SPEED,
WHEN TRIMMING SIDE OF CUE TIP-
SEEMS LIKE SLOWER IS BETTER,
FOR ME"
LATHE SPEED "FOR TRIMMING CUE TIP
- Thread starter Duane Remick
- Start date
Can you tell me on a mid-size cue smith approximately where those speeds are?
Between two thirds and wide open.
power shift it.................
You can buy an optical tachometer from Amazon for $20. Put a small piece of reflective tape onto everything in your shop that spins.... point the laser at the reflective tape and know exactly how fast your item is rotating. Range is 2.5 to 100K RPMs. Accuracy is ±0.05%. It won't work on a highly reflective item as this will reflect the beam and confuse the internal detector. But you can wrap a round of blue tape on the shiny shaft and put a small square of reflective tape on the blue tape. I wouldn't trust it at super slow 2.5 RPMs but your midsize motor will stall ~16 RPMs.
I've worked in (and my own) machine shops, we never-ever had RPM gauges. We either went by ear or feel. Working the part tells you what it wants. Today's PUSH BUTTON PROGRAMING machines took a HUGE 'crater of knowledge' & tossed it out the window. Waning fast are true machinists.
UBER SAD!
Agree automation degrades skill. My time on metal lathes and mills I almost never look at the speed anymore. But the first few times I had a mentor looking over my shoulder. I was looking for a general idea of what speed works better since nobody is here to tell me I can go faster. (I am also paying for my own $30 tips to “practice“ with.)I've worked in (and my own) machine shops, we never-ever had RPM gauges. We either went by ear or feel. Working the part tells you what it wants. Today's PUSH BUTTON PROGRAMING machines took a HUGE 'crater of knowledge' & tossed it out the window. Waning fast are true machinists.
UBER SAD!
Actually this couldn't be farther from the truth, a cnc machinist has to be acutely aware of his speeds and feeds. When running productions of many parts if your feeds and speeds are off you are either wasting time or burning up inserts. As a manual machinist you have a lot more tolerance in that regard because you are only doing small batches of parts. The skill sets of machinists have just changed over the years, having a good idea of what is happening at the cut is just as relevant now as it was then. Being a Journeyman Machinist of 20 years starting my career as a manual Machinist and using cnc more as I progressed I am speaking with some experience. What has changed is they don't need as many guys with lots of skill to simply push button and feed the machines once they are set up. And those positions are now being replaced with robots.I've worked in (and my own) machine shops, we never-ever had RPM gauges. We either went by ear or feel. Working the part tells you what it wants. Today's PUSH BUTTON PROGRAMING machines took a HUGE 'crater of knowledge' & tossed it out the window. Waning fast are true machinists.
UBER SAD!
The way you explain it an illegal alien who only used a screw driver in his life can take over your job.
It's obvious you're much younger than I. Your so called 'manual machinist' didn't have rpm gauges, those motors were set at specific speeds and were gear driven. That is where you get your set speeds for material working. back then you had to know the academics of gearing.
So in all basics you have your truth and I have mine... 2 different truths. And you're farther from the point I was making than you know.
Don't you have some buttons to push somewhere?
ALL THIS... from the simple question that was asked, what speed to trim a little piece of leather?
Sharp tools are more important than the rpm the shaft or cue is being spun at. I trim at around 300 rpm or so for the house cues. It works just as well as faster speeds. Sharp blades or sharp turning tools or specially made pcd tools all work if they are sharp. As soon as they dull is when there is problems, if not immediately, it will happen.
Actually I started my apprenticeship in a shop that had machines that were originally driven by a line shaft. They had all been converted to electric motors. To figure out rpm you had to measure pulleys and do the math based on motor rpm. We had a shaper as well as a planer. I have spent the majority of my career in an R and D shop with both manual and cnc equipment. I have worked along side some good production machinists and have the utmost respect for their skills. Programing and setting up cnc's takes a lot of skill and knowledge to do it efficiently. Your comments made it sound like guys who run cnc have no understanding of feeds and speeds which is completely false. The guy who programs and sets up the machine is not the same guy who pushes button and feeds the machine all day. Although the operators still need knowledge and skill they are slowly being replaced by robots. And yes this has strayed from the topic at hand. But it gets to me when people are ignorant to other people's profession.
Working in a machine shop and being a skilled machinist are entirely different things. I retired 2 years ago after 46 years in machining, with much conventional machining early on and by the time I retired I was lead programmer specializing in 5 axis manufacturing of military aerospace parts. Lots of people work in machine shops, good programmers with a good machining background keep those people from f*cking things up.I've worked in (and my own) machine shops, we never-ever had RPM gauges. We either went by ear or feel. Working the part tells you what it wants. Today's PUSH BUTTON PROGRAMING machines took a HUGE 'crater of knowledge' & tossed it out the window. Waning fast are true machinists.
UBER SAD!