How to Use an Edge Finder | Machine Shop Talk Ep. 6

Рет қаралды 29,224

Күн бұрын

In this episode of #machineshop talk, Ian Sandusky explains how to use an edge finder to pick up the zeros on your part.
If most of your #machining work in your shop is done on a #milling machine, you are likely to be very familiar with edge finders. Sometimes called wigglers or wobblers, these little tools are one of the most used devices when it comes to finding the edge of your workpiece or locating the zeros on your part.
The body of a typical mechanical edge finder is composed of two sections: the orbiting tip and the main body.
Finding part zero with a mechanical edge finder is a visual process that involves a few simple steps.
The first thing you'll need to do is put in the edge finder in toolholder (CAT 40) and spin it at 1,000 RPM.
Next, approach the edge of the part with the orbiting tip. Once the orbiting tip aligns with the body you'll know that the edge of the part is very close. Keep moving the edge finder until you see the tip "kicking" off-center.
Last, to calculate the zero you'll need to factor in the radius of the edge finder tip.
To learn more about edge finders and how to use them, check out our blog post "Finding the edge" in the tips and tricks section of our website
www.practicalmachinist.com/ti...
If you have more questions or would like to see more videos about this topic, make sure to leave a comment and subscribe.
Stay tuned for more #machining videos!
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Пікірлер: 45

@stephgiroux7745 9 ай бұрын

I have been a machinist for 26 years and use edge finder and wigglers or electronics probes in my machining center I don't understand why everyone shows to use an edge finder until it kicks out. This means you pass the center. Do this with a wiggler and you break it. Go with the edge finder until it runs true and bang on the edge. I do it this way to find my center of a bore then I use my dial indicator around the bore to make sure I am in the center and I am always with in 0.001"

@ZantZ Ай бұрын

For me at least. If you're finding the midpoint of a part, it allows for a visual indicator. If you're going past for all 4 sides then it shouldn't matter, as long as you do it for all the sides. Same If you're finding a corner.

@stephgiroux7745 Ай бұрын

@@ZantZ but how far do you pass the center when your edge finder kicks out? 0.001" 0.003" 0.005?. So if you make the edge finder run true you are normally within 0.002" or better

@ZantZ Ай бұрын

@@stephgiroux7745 @stephgiroux7745 well I usually move at .001. That's good enough for me and it's one click of the wheel at a time until it breaks. I've done it for a few years now and no problems. That's with flipping parts and it's right on the money. Then again, I'm not doing crazy high resolution or anything. I obviously haven't machined for as long as you so I'm no where near the expertise you have. I'm not trying to say you're wrong or anything I'm just saying that it's worked for me. I do see what you're saying though.

@stephgiroux7745 Ай бұрын

@@ZantZ and I was taking of manual machining and not cnc. In my machining center I use an electronic probe So yes I agree with you when you can select your movement incremental

@Reach41 8 ай бұрын

I sometimes use mine as a travel stop, sometimes as a staking tool, sometimes as a battering ram. It has also been a great machine jog teaching aide!

@technomech303 3 жыл бұрын

Thanks for sharing your knowledge, Ian, it's thoroughly appreciated. * thumbs up *

@1965accobra 3 жыл бұрын

Looking forward to more shop tours and tips. Keep up the good work.

@davidknight2591 4 жыл бұрын

Good Job as usual. Keep up the Good Work!

@pfsmith007 7 ай бұрын

Great demonstration.

@antoinecasey3369 9 ай бұрын

Great video

@tylercousins7779 Жыл бұрын

Can someone please explain something to me. Once the wiggler stops wiggling is that not perfectly in alignment and the center is then 100/1000 off center? Once you go past that tiny bit to start it wiggling again, technically you’re off by that much. Is it such a small number that it’s irrelevant?

@iansandusky417 Жыл бұрын

Y'know, I've always just been trained that when it 'kicks' it's technically on zero, minus half the diameter of the tip - but technically, I think you're correct that it's theoretically off by the slightest amount. What that amount is, I'm not entirely sure - but you can hold very very good accuracy without it being a factor as long as you're not trying to hit a tenth on your first pass!

@anthonyskata 4 ай бұрын

If it doesn't kick it means it's perfectly next to it. And being next to zero isn't zero

@Inatool 2 ай бұрын

The INATOOL Flex Edge Finder is a different approach to edge finding and it is fast, easy, and precise. Unskilled machinist can edge find within a couple tenths, first try. If you guys have tried to train new machinist you may know it is difficult to get them to use a wobbler or indicator arm correctly, resulting in scrapped parts. The flex edge finder is an indicator accessory, which makes an indicator a very precise edge finding tool.

@pratapsinhzala4875 4 ай бұрын

Thanks

@TheMoomba19 Жыл бұрын

Thanks for sharing. Never understood how to do that.

@user-eo4kn6nj8r 2 ай бұрын

How do you know if it's a positive 100,000, or A negative 100,000

@user-eo4kn6nj8r 2 ай бұрын

Having trouble with the negative or the positive 100,000 which way to Move It On Any Given side of the part

@unholyorders82 2 жыл бұрын

Mi Vida loca!

@gunnyoorah1846 Жыл бұрын

fantastic my boys have been very interested in measurement of metal machine parts ... and finding the flat side centers. Thank you for taking the time to do this video .... We are winning ... OORAH!!🦘

@caros4279 2 жыл бұрын

Shouldn't zero be when it is concentric?

@mrcalderon3 Жыл бұрын

at what rpm is it recommended to use a cnc machine

@666monster8 5 ай бұрын

It will work with spindle at 750 rpm as well , on a haas u can run at 1000 but once you open door it auto changes to 750

@davidcavanaugh322 6 ай бұрын

I want to get into doing some hobby machining and milling, can anyone recommend which Lathe/mill combo I should buy, or go with seperate machines, I know there a lot of Chinese machines out there with differing levels of quality and precision. Would appreciate any recommendations. Thanks Dave C

@madmikey11 Жыл бұрын

Part zero set?

@TODSEATTLE 4 жыл бұрын

Good video, but get a tripod Please!

@user-eo4kn6nj8r 2 ай бұрын

How do you know when to minus the 100,000 or

@DaCrimsonwind 4 жыл бұрын

How do you deal with a edge finder that's become magnetized?

@davidscott430 4 жыл бұрын

Like anything else, demagnetize it.

@robertdubard7959 15 күн бұрын

Or throw it out. Or just use it on non magnetic materials

@ZachBatts 2 жыл бұрын

What's the MDI command to set 1000rpm on the spindle?

@tombo3425 Жыл бұрын

M3 s1000

@threegreencharms Жыл бұрын

Mdi m3 s1000

@jimringle3845 10 ай бұрын

S1000 m3

@drstrangelove09 Жыл бұрын

why does it kick when it's on the edge?

@robertdubard7959 15 күн бұрын

Friction

@joeshmoe5935 4 жыл бұрын

Can you honestly say that all kicks are the same? I mean I set the dro so that the first .0005 that I see the slightest kick I call that the edge. I'm talking like .010 kick. Anything more than that and it seems like I am going past the edge.

@raydash2898 3 жыл бұрын

Brand new to milling and watching all the videos I can, one I find the edge does it matter what size end mill I use to make the cuts?

@joeshmoe5935 3 жыл бұрын

@@raydash2898 Bigger the end mill, and more importantly, the more teeth on that end mill, then the deeper the radial depth of cut you can take when finishing one edge of the workpiece.

@verbails 2 жыл бұрын

Yes I agree it’s too easy to go 1 thou or 5 thou I was taught to bring it back of the face until it snaps straight far more consistent. If you are pushing it of it is no longer in line with the shank so less than 100 thou from the edge!

@anthonyrochon3907 3 ай бұрын

It's gonna be beginners that mostly watch this. More helpful if you show on the key paid what your doing to take off 100 thou

@robertdubard7959 15 күн бұрын

I think you could go for some better camera work.....

@AA-69 Жыл бұрын

Too much of what the cat licked its arse with !

@billshiff2060 10 ай бұрын

2:36 "you don't want it to square like that because then you won't be able to see it kick" That is absurd. It is ALWAYS "square like that" before it kicks. You and all these guys who keep flipping the edge finder for NO REASON WHATSOEVER annoy me. It tells me you do things without thinking. When you say " I was taught to...." or "I was trained to..." I know I am dealing with a second rate mind.