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2008 Mori Seiki NH4000DCG

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I have been a big fan and user of Mori Seiki machines for many years. Recently, however I had issues with two NH4000 DCG horizontals that were both manufactured in 2008. Both machines have a full 4th axis and have built-in direct drive motors on them . The machines will run and position in rapid mode but will not rotate in feed mode without an alarm. After taking one apart we found the windings to be fully shorted and the fix was extremely costly. Because we also have a 2005 machine with no issue I thought it might be no coincidence that I have 2 machines the same age that have major 4th axis issues. If anyone has had a similar issues with this Mori machine manufactured in or around 2008 I would like to hear about it.

Matsuura MC-700H optional airblow

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so im having an issue getting my Optional M codes to work . each time i try to use the M25 i get error message 2401 m-code that should not be used is commanded. The problem is if i use the optional m codes the machine stays on idle because its not receiving a finish signal to proceed. I emailed Matsuura but they are really bad at responding back and really vague on their responses and i believe they are holding back critical information that i need. The machine didnt come with the air blow option. so i had to install that option my self, my electrical is fine i believe.


does anybody know the parameter needed to unlock the m25 , m27 option . Has anybody wired the optional air blow on the matsuuras.

i have emailed , Matsuura , Yamazen they rarely respond and the respond i get are extremely vague. Methods no longer carries Matsuura so they cant help me .


help

Anybody repair Yaskawa AC drives?

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Yaskawa wants a flat fee of about 1600.00 bucks ,I thinking if I was to chance it and pay actual bench time,the price should be much less.

Nothing fried I was warming the machine up and excessive current alarm came up.
I have a borrowed drive and it works fine
But their going to want their borrowed drive back:rolleyes5:

Cutter comp show up after canceled, Need help please

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Fanuc OMD, Yang VMC. Couple days ago some of you helped me learn to hand code nested parts using G52 and subprograms. Work greats and much appreciated. However, in the pocket sub I am using G41 and despite canceling it G40 in sub and main, it will show up on the next op, subprogram by the exact amount=.0781 radius. I noticed this when proving and added g91 g28 z0. x0.y0. That seemed to fix the problem but it just showed up on the last subgroup Undercut, scraping the parts. I posted Main code, the pocket sub, then undercut sub(scraped here). Sorry for all the code but without it no one can help. Thanks you.

Main program
%
O8100
G90 G94 G80 G20 G17 G64 G40 G49
M06 T16
G90 G64
G59
M03 S6000
M08
Z7.
G43 Z4. H16
X0. Y0.
Z1.
M98 P8900(DRILLSUB1)
G52 X.75 Y0.
M98 P8900 (DRILLSUB2)
G52 X1.5 Y0.
M98 P8900 (DRILLSUB3)
G52 X2.25 Y0.
M98 P8900 (DRILLSUB4)
G52 X0. Y0.
G59
Z2.
G00 X0.Y0.
M09
M05
G00 Z5.
G49
G40
G91 G28 Z0.
G91 G28 X0. Y0.
N100 (POCKET sub)
G90 G94 G80 G20 G17 G64 G40 G49
M06 T16
G90 G64
G59
M03 S6000
M08
Z7.
G43 Z4. H16
X0. Y0.
Z1.
M98 P8901(POCKETSUB1)
G52 X.75 Y0.
M98 P8901 (POCKETSUB2)
G52 X1.5 Y0.
M98 P8901 (POCKETSUB3)
G52 X2.25 Y0.
M98 P8901 (POCKETUB4)
G52 X0. Y0.
G59
Z2.
G00 X0. Y0.
M09
G00 Z5.
G49
G40
M05
G91 G28 Z0.
G91 G28 X0. Y0.
N200 (UNDERCUT sub)
G90 G94 G80 G20 G17 G64 G40 G49
M06 T11
G90 G64
G59
M03 S4500
M08
Z7.
G43 Z4. H11
X0. Y.0 <---********(just noticed this and fixed, will this cause problems .0 instead of 0.)
Z1.
M98 P8902(UNDERCUT SUB1)
G52 X.75 Y0.
M98 P8902 (UNDERCUT SUB2)
G52 X1.5 Y0.
M98 P8902 (UNDERCUT SUB3)
G52 X2.25 Y0.
M98 P8902 (UNDERCUT SUB4)
G52 X0. Y0.
G59
Z2.
G00 X0. Y0.
M09
G00 Z5.
G49
G40
M05
G91 G28 Z0.
G91 G28 X0. Y0.
M30
%


Comp used here:
%
O8901 (POCKETSUB)
G90 G94 G80 G20 G17 G64
G01 Z1. F60.
X0. Y0.
Z.7
G01 X.265 Y-.875 F10.
Z.55
Y-.250 Z.5 F12.
Y-1.5 Z.45
Y-.250 Z.4
Y-1.5 Z.35
Y-.250 Z.3
Y-1.5 Z.25
Y-.250 Z.230
Y-.875 F10.
X.3
G01 Y-.775 F8.
G41 X.125 D16
Y-1.621
X.405
Y-.129
X.125
Y-.9
G40
X.265
G00 Z1.
X0. Y0.5
G01 Z.4 F16.
X-.1
G41 Y0. D16
X.530
Y-1.750
X0.
Y0.
Z.305
X.530
Y-1.750
X0.
Y0.
Z.205
X.530
Y-1.750
X0.
Y0.
Z.100
X.530
Y-1.750
X0.
Y0.
G00 Z1.
G40
M99
%

Cutter comp showed up on this sub:
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O8902 (UNDERCUT POCKET SUB)
G90 G94 G80 G20 G17 G64
G01 Z1. F10.
X.265 Y-.3
Z.230
Y-.2
Y-.3
G00 Z.5
Y-1.45
G01 Z.230
Y-1.550
Y-1.45
G00 Z1.
G40
M99
%

Control cant find block number of sub in program Millplus DMU50v

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Im making some gears with my DMU50v and the control has developed a problem locating the sub block numbers in a program. Ive used the same code to generate gears on this machine using the B axis as a rotary a number of times but today I get the error P08 at N31 "block number to repeat not in program". As you can see below, the block no is in the program. This code ran before, I checked a gear program used about a month ago to cut some gears, exact same code. Any idea what I might be missing?

I was testing a new post processor recently and ended up with some output that had errors and wouldnt run. Wondering if the program directory is corrupted.

%PM9002
N9002
N1 G17 T4 M46
N11 G0 X-5. Y0. Z8. B0.
N16 S760 M3
N21 G0 X3.53 Y-.268 B0. Z0.
N26 M8
N31 G14 J1 N1=676 N2=701
N36 G0 X3.53 Y-.268 B5.714
N41 G14 J1 N1=676 N2=701
N46 G0 X3.53 Y-.268 B11.428
N51 G14 J1 N1=676 N2=701
N56 G0 X3.53 Y-.268 B17.143
N61 G14 J1 N1=676 N2=701
N66 G0 X3.53 Y-.268 B22.857
N71 G14 J1 N1=676 N2=701
N76 G0 X3.53 Y-.268 B28.571
N81 G14 J1 N1=676 N2=701
N86 G0 X3.53 Y-.268 B34.285
N91 G14 J1 N1=676 N2=701
N96 G0 X3.53 Y-.268 B39.999
N101 G14 J1 N1=676 N2=701
N106 G0 X3.53 Y-.268 B45.714
N111 G14 J1 N1=676 N2=701
N116 G0 X3.53 Y-.268 B51.428
N121 G14 J1 N1=676 N2=701
N126 G0 X3.53 Y-.268 B57.142
N131 G14 J1 N1=676 N2=701
N136 G0 X3.53 Y-.268 B62.856
N141 G14 J1 N1=676 N2=701
N146 G0 X3.53 Y-.268 B68.57
N151 G14 J1 N1=676 N2=701
N156 G0 X3.53 Y-.268 B74.285
N161 G14 J1 N1=676 N2=701
N166 G0 X3.53 Y-.268 B79.999
N171 G14 J1 N1=676 N2=701
N176 G0 X3.53 Y-.268 B85.713
N181 G14 J1 N1=676 N2=701
N186 G0 X3.53 Y-.268 B91.427
N191 G14 J1 N1=676 N2=701
N196 G0 X3.53 Y-.268 B97.141
N201 G14 J1 N1=676 N2=701
N206 G0 X3.53 Y-.268 B102.856
N211 G14 J1 N1=676 N2=701
N216 G0 X3.53 Y-.268 B108.57
N221 G14 J1 N1=676 N2=701
N226 G0 X3.53 Y-.268 B114.284
N231 G14 J1 N1=676 N2=701
N236 G0 X3.53 Y-.268 B119.998
N241 G14 J1 N1=676 N2=701
N246 G0 X3.53 Y-.268 B125.712
N251 G14 J1 N1=676 N2=701
N256 G0 X3.53 Y-.268 B131.427
N261 G14 J1 N1=676 N2=701
N266 G0 X3.53 Y-.268 B137.141
N271 G14 J1 N1=676 N2=701
N276 G0 X3.53 Y-.268 B142.855
N281 G14 J1 N1=676 N2=701
N286 G0 X3.53 Y-.268 B148.569
N291 G14 J1 N1=676 N2=701
N296 G0 X3.53 Y-.268 B154.283
N301 G14 J1 N1=676 N2=701
N306 G0 X3.53 Y-.268 B159.998
N311 G14 J1 N1=676 N2=701
N316 G0 X3.53 Y-.268 B165.712
N321 G14 J1 N1=676 N2=701
N326 G0 X3.53 Y-.268 B171.426
N331 G14 J1 N1=676 N2=701
N336 G0 X3.53 Y-.268 B177.14
N341 G14 J1 N1=676 N2=701
N346 G0 X3.53 Y-.268 B182.854
N351 G14 J1 N1=676 N2=701
N356 G0 X3.53 Y-.268 B188.569
N361 G14 J1 N1=676 N2=701
N366 G0 X3.53 Y-.268 B194.283
N371 G14 J1 N1=676 N2=701
N376 G0 X3.53 Y-.268 B199.997
N381 G14 J1 N1=676 N2=701
N386 G0 X3.53 Y-.268 B205.711
N391 G14 J1 N1=676 N2=701
N396 G0 X3.53 Y-.268 B211.425
N401 G14 J1 N1=676 N2=701
N406 G0 X3.53 Y-.268 B217.14
N411 G14 J1 N1=676 N2=701
N416 G0 X3.53 Y-.268 B222.854
N421 G14 J1 N1=676 N2=701
N426 G0 X3.53 Y-.268 B228.568
N431 G14 J1 N1=676 N2=701
N436 G0 X3.53 Y-.268 B234.282
N441 G14 J1 N1=676 N2=701
N446 G0 X3.53 Y-.268 B239.996
N451 G14 J1 N1=676 N2=701
N456 G0 X3.53 Y-.268 B245.711
N461 G14 J1 N1=676 N2=701
N466 G0 X3.53 Y-.268 B251.425
N471 G14 J1 N1=676 N2=701
N476 G0 X3.53 Y-.268 B257.139
N481 G14 J1 N1=676 N2=701
N486 G0 X3.53 Y-.268 B262.853
N491 G14 J1 N1=676 N2=701
N496 G0 X3.53 Y-.268 B268.567
N501 G14 J1 N1=676 N2=701
N506 G0 X3.53 Y-.268 B274.282
N511 G14 J1 N1=676 N2=701
N516 G0 X3.53 Y-.268 B279.996
N521 G14 J1 N1=676 N2=701
N526 G0 X3.53 Y-.268 B285.71
N531 G14 J1 N1=676 N2=701
N536 G0 X3.53 Y-.268 B291.424
N541 G14 J1 N1=676 N2=701
N546 G0 X3.53 Y-.268 B297.138
N551 G14 J1 N1=676 N2=701
N556 G0 X3.53 Y-.268 B302.853
N561 G14 J1 N1=676 N2=701
N566 G0 X3.53 Y-.268 B308.567
N571 G14 J1 N1=676 N2=701
N576 G0 X3.53 Y-.268 B314.281
N581 G14 J1 N1=676 N2=701
N586 G0 X3.53 Y-.268 B319.995
N591 G14 J1 N1=676 N2=701
N596 G0 X3.53 Y-.268 B325.709
N601 G14 J1 N1=676 N2=701
N606 G0 X3.53 Y-.268 B331.424
N611 G14 J1 N1=676 N2=701
N616 G0 X3.53 Y-.268 B337.138
N621 G14 J1 N1=676 N2=701
N626 G0 X3.53 Y-.268 B342.852
N631 G14 J1 N1=676 N2=701
N636 G0 X3.53 Y-.268 B348.566
N641 G14 J1 N1=676 N2=701
N646 G0 X3.53 Y-.268 B354.28
N651 G14 J1 N1=676 N2=701
N656 G0 X3.53 Y-.268 B359.995
N661 G14 J1 N1=676 N2=701
N666 M9
N671 G14 J1 N1=711
N676 Z1.
N681 G1 Z0. F4.
N686 X2.53
N691 Y.6796
N696 X3.53
N701 G0 Z1.
N706 (END OF SUB)
N711 G0 X-5. Y0. Z8. B0. M30

Machining a helical cam groove

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Hello All,

I am working with a machine shop in China who seem, from the correspondance I have had thus far, to be convincing. I have sent them a design for a sand casting (about 6"x3"x5") which requires secondary machining of a helical cam groove.

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I had assumed that the casting would be within 0.3mm and be machined to tolerance with a T Slot cutter. However, this seems to be causing consternation. They claim that because the groove is undercut they need to use EDM which is pushing up the cost, both significantly and unnecessarily in my view.

Anyone's two cents would be greatly appreciated.

Regards,

Lud
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ball screw repair

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I had my x axis screw rebuilt a little over a year ago. Last week I replaced the thrust bearings and discovered the axis had gone from .0005 backlash to .00175 ish. Upon inspection my ball nut somehow dropped one of the internal return "plugs" in to my saddle along with the 16 balls, all in one cute little pile amazingly. The screw still moves smoothly (not surprising since there are 8 circuits in the damned thing and only one dropped out).

I would like to try to fix it in the machine if possible since I can unbolt the ball nut mount and jog the nut over to where I can get to it. Removing the screw completely is a giant pain since the machine resides in a single car garage with about 1 inch of clearance on either side of the table travel.

Anyone know what kind of "glue" they use to hold the internal nylon plug type returns in? I have an identical screw from a machine I bought for parts that needs re-balled and all of the return plugs + the end seals are held in by some kind of thin brownish adhesive.

Hardinge gt27 collet pressure question

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Hey guys is there any way(parameter setting) that i can change the minimum allowed collet pressure on this lathe. Right now anything below 140 psi it throws an alarm and wont run. This is problematic because this is a super precise lathe (.00005) offset adjustments, but it crushes parts like the junkyard crushes cars. Any help would be greatly appreciated

Need Help!! Lost MSD on my Emco Turn 140 with emcotronic MT02

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could anyone help me ??
My machine Emco Turn140 with emcotronic MT02 has lost MSD, and the backup tape I got with the machine seems to be demagnetized.

is there anyone that could help me with a working MSD ?
and what PC software should be used to transfer MSD and files to the Machine via RS232 ??




Best Regards
Henric

drill selection and minimizing burrs. Making lots of holes in AR500.

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I'm working on a job with 1/2" thick AR500 plate where it needs 2,100 5/16" holes. It's around Rc 50 hardness. What kind of drill would you use for this? The edges cannot be chamfered so I'm not sure what to do about burrs on the back side. Possibly burning off or media blasting? Or predrill slightly undersize and finish with an endmill? I think I would set up 3-4 of the same tool and have it switch out mid part so it never gets too dull.

Form tapping 304L pipe in a lathe?

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Guys, quoting a job just now and looking for some advice/reassurance.

304L stainless pipe 1/2" SCH80, need to put a 2xD M16 thread in the ends, pretty high quantity, enough that I don't want to single point.

Nominal bore is about 13.8mm, so using a cut tap would be in the skin of the pipe for the most part even if I bored to 14mm first. I don't expect much life from my tap in that situation.

Alternative is to form tap, bore to 15.1mm which should completely remove the surface of the material before tapping.

For some inexplicable reason, my Doosan only has rigid on the live, not on the main, so I'd be using a tension tapping head. I have a couple of different ones to choose from - a pafix dead length release and a selection of plain tension ones. The pafix works superbly whenever I've used it before, but I've only ever used it with cut taps.

So my question is, how many parts would you expect to get from a tap under these circumstances, using soluble oil?

TIA, Gregor

Spiral and conical interpolation.

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Hey guys. We have a mori seiki nh6300 with an f31ia control. I've been playing around off and on trying to get it to do a spiral interpolation. With no luck. Keeps giving me an over tolerance of radius alarm. Is this a sign that this function is not turned on? Or just bad code.
Ex:
G1 X1.5625 Y0 F20.
G3 X1.2 Y0 J-1.5625 L4

Any help would be appreciated. And any ex of conical interpolation to

Thanks Nick

Horizantal CNC Machining Center

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Hello,

We are planning to buy New Horizantal-Cnc-Machining-Center, we receive proposal from several companies like Daewoo, Toyoda etc.

Also we receive proposal from Hyundai wia which is Hyundai-Wia HS5000/50 , When i observe the technical specifications of the machine, it looks quite enough for our needs and ofcourse its price is lower than the other machines.

My question is , I haven't huge experience about Horizantal CNC machining center , Is there anyone who work with this model of Hyundai-Wia horizantal machining center, at least is there anyone who work with hyundai-wia cncies(Lathes, cnc milling centers), Is there anyone who have some experience with Hyundai-Wia or knowledge about Hyundai-wia cnc machines????

Any suggestions???

Regards....

How does my riser plate look on our Brother R450X1

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Just finished reworking the solid model for our Brother R450X1, and designing the riser plate for our Vero S system. Am I missing anything? The travels of the machine are represented by the gray boxes, and the longest tool length is represented by the line coming out of the spindle.

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:cheers:
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Endless loop: Main program terminated by M99

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I'm adding new features to the rs274ngc G-code interpreter to make it more compatible with Fanuc and other controllers. One such feature is numbering the main or sub-program with e.g. O1, and adding the M98 and M99 codes. (By contrast, rs274ngc-flavored code allows no main program number, and sub-programs are defined with O1 sub...O1 endsub and called with O1 call.)

Smid 3rd Ed. offhandedly mentions on p. 384, "Subprogram Functions" section, para. 2:

Quote:

Although M99 is mostly used to end a subprogram, it may also
be rarely used in the main program, replacing the M30 function.
In this case, the program will run 'forever', or until the _Reset_
key is pressed.
On p. 488, Smid mentions the use case of a machine warm-up program where the program runs endlessly until the operator toggles block skipping, which enables a / M30 block. Another use case is in bar cutting.

My question for you experienced machine operators out there is, how is a main program distinguished from a subprogram? Consider the following example:

Code:

O1 (Main program)
(print, Main program 1: calling subprogram 2)
M98 P2
M99

O2 (Subprogram)
(print, Subprogram 2:  returning to main program 1)
M99
%

The G-Wizard guy explores endless loops at length in a tutorial; look about 40% down the page for the section "The G-Wizard CNC Editor Can Help You Debug Macros and Identify Infinite Loops". He says Mach3 prohibits endless loops, and

Quote:

Most g-code dialects, when faced with an M99 and no M98 having
called will simply start executing the very first line of g-code
at the top of the program again.
This seems to make sense in the tutorial's examples, where there is no O-word indicating the main program number. But those examples and others I can find (e.g. a Haas lathe manual) don't treat the case of the numbered main program.

I can see two ways to handle this:

1) Simply pick the first numbered program (O1 in the above example) as the main program. The Fanuc examples all seem to have subprograms following the main program. However, I don't know if this is a requirement, and the rs274ngc case isn't instructive, since O sub-style subroutines may come either before or (now that I unbroke a several-year-old regression) after.

2) Prohibit M99 terminating numbered programs. The controller would raise an error for the above example, and the example could be fixed by removing the O1 block.

Any suggestions?

Running lights-out - Tool checking / Spare tools?

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Just started doing some longer-running parts over night recently. So far it has been positive. It's nice coming in the morning and having finished parts waiting on the table, or the machine still running.

I'm running sub-programs, so each tool runs through all parts before the next. I'm also running tool breakage checks between tools.

Run times for this part is about 1 hour each and I'm setting either 10 or 12 parts to go at night. So far, tools have been pretty reliable. I've gone about 80 parts.

Then one morning I come in and I lost a tool about 1/3 the way through. Machine stopped as expected, but the loss of productivity is disappointing. Time to look at advanced tool management. (This is on a Haas) I figured it would be nice to setup a spare tool for ones that may potentially be a problem.

The ATM groups are working okay. It does have it's quirks it seems. I quickly found out that Haas does not like you staging the next tool, if you have T&H code agreement on.
eg:
T1021 M6
T19
..
G43 H1021
Will throw an alarm. OK, easy enough fix. I'm using H#3026 for now. Curious as to what you guys are doing? Leave the tool-staging out? (does it matter if toolchange takes a few extra seconds? probably not)

So, after lot of post-modifications, I have it checking for tool breakage between tools (like before) and tools that I'm going to use in a group, it checks after each part. If one of those tools in a group breaks, it will mark the part bad (skip on subsequent tools) and grab the next tool from the group.


This is all new territory for me. I'm curious what you guys are doing for lights-out operations? Break checks? Spare tools? Or something else?

Anyone ever replace integral spindle bearings on their own?

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Yeah, I'm considering it.

How bad was it? Im no stranger to taking stuff apart and putting it back together. I've never done a spindle though. . .

Have a question about Reamers

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Good Afternoon,

We are investigating a few new to us reamers, and I was wondering if any one had any input on the following reamers:

MAPAL Single blade, indexable insert reamers w/ carbide lands
Cogsdill - Shefcut Design indexable insert reamers w/carbide lands

Has any one used these? How did they work? Any feed back would be helpful.

Thanks in advance.

Form tool Problems

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I have a part that has a bore measuring 4.745-4.770mm dia and about 11mm deep. It,s produced on a tornos sliding head lathe and drilled on the second op.

The problem I'm having is every time I change the form tool, either because a different set up or worn tool, its a nightmare to get working within tolerance again, the bore comes out .1 over size and even tho the from tools are made .02 under size to allow me change the wear.

The bore is drilled out by a 4.6mm carbide drill before the form tool goes in, the reason I use a drill so close to form tool size is because the form tool vibrated with smaller drill, so I drill out as much as possible.

Machine has been clocked and every axis is perfect so from should be on size first time, but for some reason I have to plus up by nearly .185 in to wear before I hit my sweet spot.

I get the tool cutting within tolerance eventually but I every time is different and no solution to why a perfectly clocked machine with new tools doesn't cut on centre first time.

Hope I'm making sense

Anyone ever experience anything like this.

Please check my tapping Fanuc Doosan Tap Break

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Ive been running a Doosan DNM 500 for about 15 months. I program with HSM Express in Solid works. From day 1 the other employees told me it does not tap well. We break A LOT of taps. I have been going through and not so systematically eliminating problems. I talked the owner into buying through coolant carbide drills in our common tap drill sizes. This was a huge step up. I replaced a mixed bag of brand/type taps with a good brand of taps. Most are spiral flute, "semi bottoming" as most of our holes are blind. That helped... a little.

Today I was rockin and rolling, making good head way on the pile of shhtuff the office threw out monday. I setup a part, first setup, simple, two tapped 10-24 holes. Drilled, chamfered, tap in, tink, nothing out. This was a nearly new tap, it had previously tapped 4 holes in O1 and 5 holes in 6061. I was tapping O1.

I drilled .510 deep with a #25 Guhring Carbide drill (3.8 or .1495) @ 5109 RPM .004 feed per rev. Chamfered .015, then tapped .400 deep with a Guhring Goldring Powertap form C @ 452 RPM (20/ft/min).

I will have a picture posted in a little bit of the actual part. I cross sectioned it because I was curious WHERE the tap broke. I do have pin gauges at home I can measure the hole and see what the actual dimension is. Calipers say .1495.

Coolant is nice and rich right now, ~ 10% +, Betasol 210 EX, though it is hazy, not a crisp line like I like.

I have told the owner that short of me having the Doosan folks, the Guhring folks, the Pioneer folks, and the HSM folks locked in a room to sort the issue out, I really am at a loss. It is beyond my experience.

Any constructive help, please, please, let me know. Feel free to ask a million questions, I am sure I missed at least that many details.
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