[AT] OT: non-tractor covid-19 activates

Sun Apr 5 03:26:02 PDT 2020

Glad you liked it, Ken!

SO

On Sat, Apr 4, 2020 at 1:30 PM Ken Knierim <ken.knierim at gmail.com> wrote:

> Steve: thanks for all the video and manufacturing information. I'd seen
> shapers sitting around and knew generally how they worked (from a retired
> machinist/engineer/shop wizard neighbor) but this is the first time I've
> seen one in action. My son and I watched the machine work
>
> The new neighbor has 4 Haas and a Brother for CNC equipment now; any of
> them are impressive to watch but the Brother is a step up (to me anyway).
> Fast and efficient. Of course, the neighbor is pretty fastidious and cares
> for his equipment well too.
>
> Jim: the neighbor fought with the coolant mist in his shop; it was
> wrecking the AC filters and getting into everything until he got a HEPA
> filtered system for abating the mess. Didn't take long before he had them
> on all the machines. Afterward the filters in the AC system would actually
> last a decent amount of time (rather than daily replacements). It might not
> apply to what you were doing (since the CNC's are fairly well enclosed) but
> I know it bothered him until he found and installed the filtration systems.
>
> very informative. Thanks!
>
> Ken in AZ
>
>
>
> On Sat, Apr 4, 2020 at 7:54 AM Jim Thomson <macowboy at comcast.net> wrote:
>
>> Steve,
>>
>>   Great video! Do you have any mist collection or is it not enough to
>> warrant a system? In 2008 I worked in a large Swiss Screw house. There was
>> a oil haze everyday about 6 ' above the ground in the winter months. I
>> would come home smelling like cutting oil. Those were the days.
>>
>> Jim Thomson
>> Rehoboth, MA
>>
>> On April 3, 2020 at 11:46 AM Stephen Offiler <soffiler at gmail.com> 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>
>> 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>
>> 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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