Just what we were trying to avoid!

[@risengdesign]

Testing with the most expensive object in the tool changer for absolutely no reason 😂

[@flikflak24]

personally i send the probe in for complete checking by the manifacture just to be sure since its so expensive and important ( "calibrating" / remove the runout i do myself on my machine ( maybe even with my CEJ mikrokator 510-7 ( if you dont know that one then look it up) )

[@Crooked...]

Maybe place the probe in one of the lowest slots to reduce the fall height if it drops in the future? And perhaps you could add some cushioning at the bottom of the tool changer.

[@ifconceptvideos]

When you're in prison never drop the soap. When you're in the machine shop never drop the probe. In both situations you are screwed.

[@mariusj8542]

That gave me a chuckle.

[@billdoodson4232]

😂😅😅😮😂

[@JanBinnendijk]

What i always did when calibrating the length of the probe was using a "Setup Tool" first, this was a toolholder with a ground pin in it, fastened tightly and that was the base of my toollenght as well, as i used that tool to calibrate the toolsetter as well. I would jog down, and take a gaugeblock, then move so that the gaugeblock would just slide under, then set Z to Zero.. and calibrate the Probelenght on that same gaugeblock.. worked everytime.. You could also set Z to the height of that gaugeblock, and then Calibrate on the surface it was sitting on.

[@human2761]

Mount the probe on the speedio , calibrate and run a few measure cycles in the ring for repeatability check.

[@djdelorie]

On my homebrew wood cnc machine, I have a few layers of foam insulation under the tool rack "just in case"

[@Fullion-CA]

A few years ago I was hired to run an older large horizontal Mazak mill. Found out the tool carousel was losing track of its position. First thing I did was take out the probe and then every other tool that was mounted. That was an old machine that was hard to get any parts for. Best practice for JohnGrismo would be to get or make a 3d printed dummy tool to do testing with.

[@bcbloc02]

Surprised the belt was made out of materials the coolant would destroy in such a short time span.

[@mattgregory1239]

why dont you put the probe on the bottom row of tools so it has less distance to fall

[@Raptorman0909]

Sounds like they are not fully aware of how it works so making changes without really knowing is not advised. This is not as important at the spindle alignment, but it isn't unimportant either, particularly if you'd prefer not to waste production time and labor costs. There should be a test routine to check the entire XZ of the tool rack. There should also be a teach routine to teach the rack.

[@barboki]

Thanks for sharing. I really enjoy watching you problem solve.

[@joshuahuman1]

looking at it in the future its would probably be easier to do the gantry alignment to by loosening the coupling on the shaft that couples the top and bottom rails and rotating the side that needs to be adjusted by hand then tighten the coupler once its in the correct position.

[@flikflak24]

what the gauge ring is saying is that at 20 degree centius its 19.999 millimeter ( though with the material its made from its less then a micro in expantion if its between 19C and 21C ( even 0.1C above or below you have to start to think about thermal compensation ) i always check the temp of it before i start measuring ( if its like 18C i just say its 19.998mm and if its like 21.5C i just say that its 20mm and thats always worked perfect for me )

[@TheTsunamijuan]

My understanding of probe designs, is that they use ground balls, in a triangle configuration inside the probe, as it touches, these will either disconnect from one ball/side at a time or in the case of vertical z axis probing, should be all three at the same time. The advantage is that it will take alot of force to damage one of these hardened and ground balls inside the probe. Since you always have too recalibrate when replacing probe ends its likely to be in a range of what the calibration takes care of. But I guess if it was me I would probably setup a probe and repeat macro so i could see if its still operating within its accepted repeatability range for the probe.

[@EightSixx]

can't wait to get my Saga ORDER! i didn't know i could get a maple!? there was no option for maple in the order form!!!

[@Kyran31]

23:48 when calibrating using the ring gauge, do you not need to indicate the centre of ring first and tell the machine where the centre is? Isn’t that how it calibrates for the probe tip being off centre?

[@zacharywampler563]

Not sure how the Kern works, but normal calibration routines will probe the bore and then spin the probe 180 degrees and probe again. The software will compare the data and compensate accordingly, so indicating in the ring gauge is not necessary.

[@Kyran31]

ahh I’m not lucky enough to have a kern, I have a Hurco where I work and my probe doesn’t rotate between touches, it just orients the spindle prior to beginning cycle, hence needing to indicate a gauge when calibrating, I didn’t think the probe in the video was rotating during calibration either which is why I thought he’d missed that bit out

[@LostApathyDotCom]

Have you guys thought about 3d printing a couple dummy tool holders you could put in the machine for testing things like this? Then you aren't dropping expensive tool holders, and anything you do drop is a lot lighter and less likely to break something else.

[@AandHAutomationllc]

the are both Drives there is no slave. Please make sure the pulley is not slipping and also you should align both linear carriage to a known position before setting the coupling

[@92cortez92]

I hate the magazine. It broke once on an Okuma horizontal milling machine (1 belt) and the rotating mechanism ran all the way to the end of the belt. Into the cover. BT50 150+ Magazin

[@NiclasGudmundsson]

Why didn't you just changed the lower belt a few teeth on the lower axle?

[@bradenrobinson6564]

My heart dropped as soon as I saw the notification 😭

[@raguramspace]

Same here !😯

[@broman113]

ngl my IQ for this job would be post-it note screwer on-er......

[@alex_yates]

I just don't understand why people try and fix their machines themselves. The time and labour required + the cost of things going wrong is such a false economy compared to getting an engineer out. I know that engineers aren't cheap (about £800/day here in the UK), but they get the job done quickly, so you're back up and running, and they take the blame if stuff like this happens....

[@JZL003]

I don't necessarily disagree but I think it could be that the mindset of the engineer who wants to make this career, also likes fixing things themselves. In software engineering, lots of people spent days and days customizing their personal editor, keyboard etc, knowing that it's often nowhere near 'worth' the efficiency (ignoring ergonomics -> less injury), but because it taps into why they made the career choice, and in the hope it might help their knowledge later

[@evguenikalachnikov2771]

Here in Italy we have, for example, very few technicians at Mazak (I run Mazaks), the guy told me they went from 5000 to over 11000 machines operating in the country, while techicians stayed mostly the same, and, more of that, a bunch of them advanced in career and now work only from the Office and not on site, while not hiring enough guys Who would do on site jobs. Therefore, sometimes it takes a week or so, before you can have the right guy in the shop, so you totally need to be able to fix some more common problems yourself. It also allows you to better know your machine, and sometimes you might be better at knowing some stuff, like sensors location, wiring than the average Mazak guy who has to service dozens of different models and simply cannot remember everything.

[@tukid666]

He talked about it on the podcast, Kern did not have the assembly in stock in Amerika i think

[@rezzmanful]

Sometimes taking a look fixes a thing in 1h, when asking someone to come by would be days. Sometimes it ends up taking a bit, yes. Personally i cant resist

[@exol511]

I support trying to fix a mechanical problem yourself (that is something one could expect a good machinist to figure out). What I do not support messing with the electrical cabinet, I have seen that very commonly with customer swapping drives, jumping sensors and so on, which generally results in more problems.

[@3ckell3]

Are the mini sagas still happening?

[@lvxleather]

That blows. Figures it would drop the one tool you don't want to, machine shop Murphy's law 😆

[@SharpenedSteel1]

Augustus Gloop is back on camera..

[@filmatura]

It has come to it. The probe dropped. Ouch.

[@garrett9186]

Who's chip is this? Kinda like a girlfriend asking Who's hair is this. Lol

[@Mnmknives]

On this week's episode of "the kern is being an asshole"😅😅😅😅 maybe a great idea maybe a really bad idea, but what about changing the belt and pulley to a chain amd sprocket? Just a thought

[@exol511]

Problem with the chain is that its less precise than a timing belt (it has a lot of play as well). Machines where I have seen chains used generally have end switches for each position.

[@Landrew0]

"Boss, we could easily make this machine stop dropping probes." "Nope, we make a lot of money selling new probes."

[@stevendoesburg6555]

They make plenty from operators crunching probes, no need to make the machine join in too.

[@txm100]

TIL people are paying over a $1000 for a knive with machining marks on the blade. What the f.

[@proten40]

should have replaced both belts

[@kisspeteristvan]

Measure an X point , rotate axis , enter X value as Z value , calibrate probe . No cutting needed . If you say this takes up the kinematic errors , well your machining cannot be any better than the machine anyway . That renishaw bullshit is unnecessary with 3+1 or more axis machines .

[@flikflak24]

personnaly i had taken the one from the speedio no matter what and send the one that the kern dropped in for testing and calibration no matter what since it was dropped and from that great hight since it is such a expensive and important tool and machine just to be absolutly sure ( cause i bet its still cheaper to get it send in tested and calibrated then if it not right in the middle of a long run with important parts) well seems about time for john to upgrade to the kern micro HD+ anyway. might as well do it now since there micro HD is doing weird anyway xD ( the HD+ have linear motors and hydro dynamic ways on all axis ( both the A. B and Z axis as well as the spindle ) well the HD only have that on the X and Y axis ( X and Y is hydro dynamic and linear motors well the A. B is homonir drives with servo's and and ball bearings and the Z is ball screw with linear rails on the HD )

[@MantismanTM]

This doesn't look good for Kern =X

[@josefodunga]

It's incredible such an expensive machine has issues like this... T-slots frames for such a critical part; cheap 3d printer parts in a half a million or more machine.