File attached if you want to take a look. The 'OP3 5 AXIS' group is my old one that I want to improve on. For sure I will use OptiRough this time. My main concern however is a 1/4" ball endmill hanging out over 3". 0002021 0002037.ZIP

I was wondering how you would come at machining the inside of this part. The floor radii are .125" and the pocket is almost 3" deep on the left side, and just over 2" deep on the right side. Last time I did a part similar to this after roughing I did a ton of Flow 5 Axis toolpaths using Tool axis control - From point, and just guesstimating where a good 'from point' would be. I am hoping someone else has a better solution. Thanks for looking!

Thanks for the replies everyone! I found an OSG EX-SUS drill and was able to do it no problems at 33SFM, 1IPM and no peck. Seems like the jobber drill was just too long and trying to untwist under the load.

Anyone have thoughts on what I'm doing wrong? Drills are 27/64" Cobalt, 1" hole depth. One flute completely pops off. Next try was going to be back up to 33SFM and try no peck. I'm thinking maybe it's trying to recut chips on the peck? Machine is like 20HP and pushing ~10% spindle load so I didn't think I was over-torquing the drill. LH Drill - 33 SFM, .0033" FPR, .250" Peck RH Drill - 22 SFM, .0035" FPR, .150" Peck

Thank you!

And how do I get rid of it? Thanks for any help you can provide! 13909c1_JN6959 -310 AND -320.ZIP

I got another recommendation for Don's Spindle Grinding so I had them come out Tuesday night. Seems like they did an awesome job. I had a 25mm insert mill slotting in aluminum that could only do .080" doc @ 128ipm and after the regrind I was able to go .200" doc @ 160ipm.

Onsite would be ideal. Thanks for the info both.

Good morning everyone. I was hoping someone would know of a reputable spindle regrinding service in So.Cal. for 40 taper mills. Any thoughts?

I think this did the trick. Thanks again everyone for the help!! pfclc_deg_inv #Feedrate deg/min if prvcabs < 0, prvcabs = prvcabs + 360 #ADDED TO FIX 180 LIMIT circum = zabs * two * pi if cuttype = two & rot_on_x = three, circum = sqrt(xabs^2 + yabs^2) * two * pi if circum = zero, circum = c9k #Don't allow Zero ldelta = sqrt((xabs-prv_xabs)^2+(yabs-prv_yabs)^2+(zabs-prv_zabs)^2) cdelta = ((abs(cabs - prvcabs))/360)*circum if ldelta = zero, cldelta = cdelta else, cldelta = sqrt(cdelta^two + ldelta^two) if cldelta = zero, cldelta = c9k if use_frinv, [ #Feedrate inverse calculation ipr_type = two prv_feed = c9k #Always force feed if cuttype = three, cldelta = sqrt((x-prv_x)^2+(y-prv_y)^2+(z-prv_z)^2) frinv = fr_pos/cldelta # 1/min #frinv = fr_pos/(60*cldelta) # 1/sec if rot_feed & opcode <> 3 & opcode <> 16, [ if frinv > maxfrinv, frinv = maxfrinv feed = frinv ] ] else, [ #Feedrate deg/min control and calculation ipr_type = zero #Change to ipr_type = one to force new DPM #frdeg = abs(cdelta/cldelta) * abs(fr_pos * (360/circum)) frdeg = fr_pos * abs((cabs - prvcabs)/cldelta) if abs(frdeg - prvfrdeg) > frdegstp | ipr_type <> prv_ipr_type, [ #Control output of frdeg if rot_feed & opcode <> 3 & opcode <> 16, [ prvfrdeg = frdeg feed = frdeg ] ] if frdeg < fr_pos & rot_feed, feed = fr_pos if frdeg > maxfrdeg & rot_feed, feed = maxfrdeg ]

Awesome, thanks Millman! I may not be able to fix it, but at least now I understand why. . . . . Found this before I posted: rot_feed : 1 #Use calculated rotary feed values, (0 = no, 1 = yes) Changed it to 0 and all is good. So now I can trace rot_feed through and see if I can get the math fixed leaving it as a 1.

No worries, I just thought it was a easy matter of subtracting 360. Thanks to all for at least looking!

Good morning everyone. I have a rotary fixture that prohibits the A axis from rotating the full 360º so I want to use negative directions. The problem is I am getting weird feedrates scattered throughout the program using my changes. Post is based off of mpmaster Relevant code changes are here, marked "#NEW LINE": pfcout #Force C axis output if index = zero & rot_on_x, [ if cabs > 180, cabs = cabs - 360 #NEW LINE if absinc = zero, *cabs, !cinc else, *cinc, !cabs ] pcout #C axis output if index = zero & rot_on_x, [ if cabs > 180, cabs = cabs - 360 #NEW LINE if absinc = zero, cabs, !cinc else, cinc, !cabs ] ppos_cax_lin #Position the rotary axis before move - rapid if index, pindex else, [ if cabs > 180, cabs = cabs - 360 #NEW LINE if fmtrnd(prv_cabs) <> fmtrnd(cabs) & rot_on_x, [ sav_gcode = gcode gcode = zero if lock_codes = 1 & not(index), pbld, n, *sunlock, "(UNLOCK)", e pbld, n, sgcode, pcout, e if lock_codes = 1 & not(index) & cuttype = 0, pbld, n, *slock, "(LOCK)", e !cia ps_cinc_calc gcode = sav_gcode ] ] And output looks like so with a programmed feedrate of 135: G00Z6. (FINISH LEG TOP) X-18.1449Y4.8425A-79.282 Z6. Z1.1998 G01Z1.0498F2000. X-18.8949Y4.8429 X-27.5866Y4.8485Z1.0507 X-36.5856Y4.853Z1.0514 X-45.5845Y4.8557Z1.0517 X-63.5805Y4.8564Z1.0515 X-76.5333Y4.8552Z1.051 X-109.2404Y4.8518Z1.0522F1456.46 X-122.8282Y4.8461Z1.0519F2000. X-128.8644Y4.8416Z1.0522 X-134.9007Y4.8355Z1.0521 X-135.4007Y4.835 G00Z6. Using V9, so flamesuit on!

Threadmill?

If you can physically jog the table to the limits, which I think you can since it sounds like the machine alarmed out before even running the code for that tool, as opposed to hitting a limit switch mid cut, I am going to guess that there is a cutter comp being applied that puts it over the limits. Or perhaps a cutter comp that was never canceled.

I still say check the back fixed jaw for lift.

That would show taper even when you clamp the part all the way down into the vise, which you said it doesn't. I think you can rule out chips under the vise, or the bottom of the vise bowing up.

Have you put an indicator on the highest point of the fixed jaw to see if it is moving under torque? If your fixed jaw flexes your part will go with it. Also make sure the floating jaw set screw is snug enough to prevent lift.

I know about those clocks. But like you already found out they can be zeroed. I meant I don't know of a way to check actual hours. There is a CMOS battery, but that isn't necessarily the reason the time is off. Perhaps someone just never set it. "Enter Next Command" > UT > 2 (Set Time) And I should clarify, when you are checking your limits watch the screen for the following error/axis load to see if you are pushing against the physical limits.

You're right Jamman. That's why you can just eyeball it and then slowly jog till it reaches the soft limits. If you get an overtravel alarm then you know you need to move home further away. As far as I know there is no way to check actual hours on the machine. At "Enter Next Command" you can type DI to get into Diagnostic mode, but I don't remember clocks being in there.

Should be on the righthand side down in front. If not just find about halfway between the travel limits. Not really all that important.

The size of the tool is irrelevant. What matters is the diameter that you are going out to. A 1" diameter c'drill that is being used to put a 1/4"*90º spot on a hole should be calculated at 1/4" diameter. FWIW I go 100sfm in steel, at 1.5% of the diameter in fpr. Although to be honest I rarely even spot first. Just send a cobalt split point or carbide down and chamfer cycle afterwards. I should also add: Spotting at anything less than the angle of the drill point is bad. You are causing the corners of the drill to hit first.

I was under the impression he was talking about Acme brand bar. And I don't understand what you mean Matthew, can you elaborate? I know of acme insert threadmills, but not sure what you mean exactly.

That'll do it! Then once you have the number you can check the spindle face to see the difference in position. If you do report back, I'm curious to know where it's at.

Coolant thru 1.5X D: HC31242L04-I18UNCTM VTH EDP# 80363 Link to all of the options: http://www.vardexusa.com/files/Solid%20Carbide%20Catalog%20_Inch%5B171109%5D.pdf