[AT] OT: non-tractor covid-19 activates
John Hall
jtchall at nc.rr.com
Fri Apr 3 17:38:22 PDT 2020
Believe it or not, there are some guys that like to collect older
machine shop equipment. Shapers seem to gather a lot of attention on
Facebook. Those and belt drive equipment were signs of a shop to run
away from when I started this trade.
Those big lathes are either a curse or a blessing. Our TOS will go
around 30" with the gap out. There have been times we could have used
bigger. Normally it collects dust, firing up 2-3 times a year. It pulled
about a 3 week stint last summer.
John Hall
On 4/3/2020 12:01 PM, Cecil Bearden wrote:
>
> After Ithought a little, I forgot about the 48x120 gap bed lathe, the
> 24in shaper, the 12x36 surface grinder and the other one sitting
> outside that was dropped off a forklift at the shippers. I have a
> 36in Yates American Bandsaw that a forklift operator dropped while
> loading. It was one the Navy owned during WWII that sawed the decking
> for ships. I have another 36in that I need to try to get working. I
> also have a 40 ton horn press. in addition to the 40 ton ironworker.
> and a Warner swasey #2 turret lathe, and somewhere around here is an
> old screw machine. There is a couple of multiple spindle drills and
> all manner of old machines.... There are not very many young folks
> that know how to operate these old machines. Just not a lot of demand
> for one-off repair work either.. Both old guys that were my teachers
> in my machine work are now gone..
>
> On 4/3/2020 10:46 AM, Stephen Offiler wrote:
>> I was just out on the factory floor and noticed one of the CNC's was
>> about to hit a bar change, and figured I'd try to capture a video of
>> the whole thing. It starts with a quick overview of the CNC and the
>> bar feeder sitting at idle. Then it shows the part being made, which
>> is the handle of our double-ended machinist scribe. Then I fire it
>> up to make the last possible part before the bar is effectively
>> consumed, then we see a part being made, although it is kind of hard
>> to see due to the coolant splash. Then it does the bar change,
>> consisting of pulling back the "remnant" (the end of the bar that's
>> now too short to make another part) while dropping a new 12' bar,
>> engaging it, and feeding it into the machine to continue automatic
>> operation.
>>
>> https://youtu.be/uy57CqHdicg
>>
>>
>> SO
>>
>>
>> On Fri, Apr 3, 2020 at 10:27 AM Stephen Offiler <soffiler at gmail.com
>> <mailto:soffiler at gmail.com>> wrote:
>>
>> Wow, Cecil, that's quite an equipment list! Some big heavy stuff
>> on that list! The only manual machining I do is making little
>> tools, jigs & fixtures, and "my" shop here at work has just one
>> (very nice) Hardinge HLV-H "Super Precision" lathe, a 2J-head
>> Bridgeport, a Kent 6x18 grinder, and a DoAll bandsaw. The magic
>> is always in the accessories; the 5C collets and the 4-jaw chuck
>> for the Hardinge, the R8 collets for the mill, the various
>> precision vises and other workholding for mill & grinder,
>> indexing heads, and a whole compliment of cutters, drills, taps,
>> wheels, etc etc.
>>
>> Oh and I do owe you a response on the ESAB plasma cutter.
>> Unfortunately, it's a pass. Sorry. We have this one job we're
>> developing now that involves making rather precise cuts, but
>> we're already down that road with a chop-saw that's working quite
>> well. We just do basically zero with sheet material most suited
>> for plasma.
>>
>> SO
>>
>> On Fri, Apr 3, 2020 at 9:54 AM Cecil Bearden
>> <crbearden at copper.net <mailto:crbearden at copper.net>> wrote:
>>
>> I planned to open a machine shop when I retired.. However,
>> here in OK
>> there is not much demand and the only jobs I had were making
>> some
>> decorating crap for some traveling vendors. The biggest job
>> was wire
>> forming for some Potpourri Pie holders. I had to build a jig
>> to bend
>> the handles with an air cylinder and rack and pinion. Then I
>> had to roll
>> a ring and weld it together with m spot welder then spot weld
>> the rings
>> to the handles The handles were also the feet to hold it
>> above the
>> stove burner. I lost the pics of it. I had a 20KW spot
>> welder and had
>> traded for a 10hp Variable frequency driver and motor from a
>> technical
>> school. I dropped the amperage with the variable frequency
>> drive to
>> keep from burning the wires up. The wires were about 3/16 dia.
>> It was fun for a while, then I felt like I was wasting my
>> talents on
>> crap... Machine shops were closing down here to send jobs
>> offshore.
>> So, I have a building with a 36x120 lathe, a 16x84 lathe, a
>> 9x40 lathe,
>> a Cincinnati Mill with a 16x72 table and universal head, 2ea
>> Kearney
>> Trecker mills with universal heads, another later model
>> Cincinnati
>> overarm mill with a 16 x 72 table, A Bridgeport, a couple of
>> knee mills
>> one Japanese, the other old old US made. I did one job with
>> the newer
>> Cincinnati overarm making T-nuts for a big holding table.
>> Now they just
>> sit in case I need to make a part for my old junk. Then I
>> was going to
>> build industrial engines, and bought the boring bars, head work
>> equipment and a big big crank grinder. Never got the crank
>> grinder set
>> up. It is still on a trailer and a stray tornado took out
>> the building
>> it was stored under.
>> Cecil
>>
>> On 4/3/2020 7:01 AM, Mark Johnson wrote:
>> > Hey - no problem with the CNC talk, at least not from me.
>> I've been a
>> > software guy all my life but I find machining absolutely
>> fascinating -
>> > wish I had learned more about it! I'm learning now...
>> >
>> > Mark J
>> >
>> > Columbia, MO
>> >
>> > On 4/3/2020 5:38 AM, Stephen Offiler wrote:
>> >> Hi John -
>> >>
>> >> Hope the list will tolerate some CNC banter. We have 1 job
>> that we
>> >> hold close, using .0001" offsets; all the rest it would be
>> more like
>> >> .0005" or more. Swiss excels in small precise stuff and
>> also long
>> >> slender stuff, and we are heavy on the latter. Don't need
>> all that
>> >> precision, but it's handy to have: I can give the guys
>> setup sheets
>> >> with .XXX" dimensions and no tolerance, and they can hit
>> the numbers
>> >> dead-on quite easily. Keeps me from having to even think
>> about
>> >> tolerances which is quite a luxury for an engineer.
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