Recent content by DMF_TomB

. optical tool setter advantages . 1) in theory you can be doing tooling while the cnc is running, its one thing only a few tools but if doing 10 to 40 tools it can be time consuming obviously . 2) optical tool setter usually has a way to calibrate whether a test bar tool or it looks at base of...

many factors like length of tool stick out tool holder length (flexing vibration damages carbide faster than hss) depth of cut width of cut part material part stability, fixture stability desired finish coolant or dry tool life sfpm ipt feed ..... router speeds often run very fast, same with...

if not a tool comp issue sometimes control . 1) doesn't like full circle, some controls need to do circle in 4 parts 2) sometimes the math is off, I have seen where control wouldn't accept numbers but changed numbers .001 mm and then it would. how math is off ? don't know but I have seen cnc...

Simple Green cleaner comes in $10. gallons and often works fairly good removing dirty coolant with oil in it coated parts, need to change rag / wiper often, other wise just rubbing part with dirty rag its just moving it around not wiping it off

..... could be crappy metal or some cutters you get a shiny mirror like surface above certain sfpm (a lot higher sfpm) ........just saying sometimes 10 or 20% adjustment often dont see everything and might need much larger changes to gather info and or find limits. thats and tool life some...

. usually cast iron distorts, bends after machining after temperature stabilizes and hours or days pass. it tends to stop warpage or distortion after that. . steel and stainless also I have seen bent to straighten and next day, it bent back some. why ? old timers would shrug and say metal had...

what to worry about ? .... most workers just get laid off and find another job. I would think boss or business owner would worry more about new technology but many businesses deliberately split company up so parts of company can declare bankruptcy (legally not pay 100% of debts) . taxes and...

from my experience 600 grit you might need to lap 10 times to remove about .0001" . 1000 grit and finer is more for polishing, 4000 grit good luck removing even .00001" even if you wanted too. most gage block that dont wring were used for check slot sizes, forcing blocks into steel slot probably...

obviously high feed rates cnc does not follow programmed path as accurately. over 100 ipm feed many cnc are easily over .0010" following the programmed path and .003" error not unheard off . many try increasing feed til it gets noisy, but i have seen where over .007" was needed to finish the...

i rub gage blocks on post it notes paper to clean, if edge needed stoning i could see doing that. . actual lapping you could try lapping film on a surface plate so film was flat. usually 1000 grit or finer lapping film feels like paper (if paper based) or if plastic film doesnt feel abrasive...

. try a .250 drill over 18" deep it can be a problem breaking drill and not being able to get out. . many drills have a back taper where flutes by shank are .002 to .020" smaller diameter. . or go in with .500 deep as comfortable as you can and finish with a smaller drill like .485 the...

. facemill with 1 or 2 or 3 inserts V shaped, then a G81 drill mode straight down then up and over for next like G81 X0. Y0. Z-.010 R0.2 F3.0 X.1 X.2 X.3 etc G80 stop cycle .... often done 2 ea surfaces 5" wide by 40" that later get moglice or a type of epoxy coating like turcite, the pattern...

. I gave often seen G4 P10000 M99 . the delay (P is milliseconds) before the M99 helps sometimes a slow control

. how much depth you lapping .0002" ? . how big the blocks 2x2", 10x10", 40x40" ? . small parts I sometimes use a sheet of sand paper on a surface plate or use stikit adhesive backed sand paper on a ground steel block . 180grit will take .0001 or .0003" enough to sand off mill marks eventually...

its a parameter on fanuc 15 machines. big drills even 0.100" not enough if chips still in hole if you got 2" or 3" dia drill rapiding back in, chips compress at bottom of hole, drill acts like rapid collision at hole bottom. when its borderline you get the crunching bad sound which aint good for...