We've got to rework approximately 3500 J1926 hydraulic ports in the next few months for a customer - they modelled the port incorrectly, and the tapered section which contacts the o-ring was not cut deep enough.
The parts are too complex to load into our VMC in any sort of practical time frame given the quantity, and where the ports are located, so I came up with a piloted indexable single flute cutter that can be run in a hand drill. It slides into a pilot bushing which threads into the hydraulic port.
After doing about 300 holes, I started getting frustrated because I was spending more time picking chips out of the threads (so that the pilot bushing could unthread from the hole) than I was actually chasing the port with the cutter. So I came up with this contraption, which @blu_schwarz_mullet named "the suck 'n' screw", to try to get the chips out of the hole before they jam in the threads. It consists of some hammered aluminum tube, zip ties, gaffer's tape, a manilla folder, and some staples. Works like a dream.
#shopfloorengineering #trashfixture #sucknscrew #jobshop #rework #onemanstrash
Quick sump plate for @christopherflechtner Harley project this week. Love watching the @haas_automation Super Mini Mill rip around in some 6061.
#instamachinist #jobshop #6061 #harleydavidson
@blu_schwarz_mullet took it upon himself to organize the loose bits in the screwdriver drawer. 100% accurate labeling. Excellent work.
#jobshop #5s #organization
It's too damn hot in here.
#tygon #oshaapproved #ppe
A mold positive in MIC-6 for some investment cast table legs we machined a few weeks ago. The legs will ultimately be cast in silicon bronze. Not bad on the surface finish front for a 26 year old machine. Fancy crating courtesy of the ever accommodating @joelerroon
#runcnc #haascnc #jobshop #investmentcasting
Been putting lots of service time into the Daewoo the past couple weeks, largely because it's finally been cranking a lot of parts out after sitting looking like an 8000lb paperweight for most of its time in the shop.
Friday afternoon we broke a Z-axis ballscrew coupler shear pin while doing a positioning move in air (strange), which led me to discover that the previous owner of the machine had been making his own shear pins... Why he needed a backstock of these I have no idea (or don't want to know). Surprisingly, Doosan still stocks many spare parts for this machine, so I've got new way wipers on the way as well as a new set of X-axis ballscrew support bearings, since it's got the robot-dinosaur noise going on.
Rebuilt the C-axis spindle brake caliper and sped up the clamp/ unclamp time by screwing with some ladder logic timers at the control. In the process, fixed some shoddy repair work someone else had done which included stripping out a 1/8 NPT hole in the damn headstock casting and globbing silicone all over to seal it up. Ended up drilling a hole in the sheet metal to get access with a drill to be able to enlarge it to 1/4 NPT and install a reducer bushing back to 1/8 NPT - the last photo shows my tapping access. The cherry on top is that this hole is the oil pump inlet for the spindle bearings and gearbox, so we had @azfizrof on the shop vac with a tiny tube nose on it sucking the chips out as I was drilling.
Also replaced the spindle oil pump head, in hopes it would be a little quieter, but instead I'm pretty sure it's sightly louder haha. It pumps a ton more oil, so that's good. And the manual spindle speed control pot was blown out so when you would even touch the knob the load meter would peg and the spindle speed would jump around like mad. That was an easy fix compared to all the other ones.
#repairsandmaintenance #shoplife #instamachinist
The art and black magic of knurling... Running a 33" long knurl on one piece of DOM and then a 30" run on another for a project that @pivot.metal is working on.
Where's my y-axis sub spindle turning center?! Working on some parts for @slayerespresso in two machines, and set up for broaching 8mm square holes with the arbor press. Daewoo is casually holding .0002 on diameter thanks to a couple stages of roughing tools and a dedicated @sumitomotool finishing insert. There's another milling op after all this and then the parts get welded to some laser cut paddles, sent out for polishing, and sent to @gaugedesigngroup to have paperstone glued on and finishing touches. Then out into the world so baristas can slap the shit out of them!
#daewoo #milling #haascnc #turning #stainlesssteel