Gripper Jaws for the lathe

Рет қаралды 88,257

4 жыл бұрын

Making gripper jaws for the lathe, very similar to what is used primarily on cnc mills.
A commercial alternative for shopmade grippers are for example MitBite Versagrip:
www.miteebite.com/products/ve...
Adam the Machinist:
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Visit my website for FAQ, a list of my machines, my products and some project documentations:
gtwr.de/
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#practitioner_of_the_mechanical_arts

Пікірлер: 270

@ROBRENZ 4 жыл бұрын

Excellent Stefan! Thanks for the shoutout. Love how awesome your lathe is setup now. ATB, Robin

@StefanGotteswinter 4 жыл бұрын

Thanks Robin! You where a great inspiration in showing your setup with the solid toolpost, preset tools, waycovers, etc.. :-)

@djizomdjinn 4 жыл бұрын

Always a pleasure to see another video from you!

@samueltaylor4989 4 жыл бұрын

That was a great idea Stefan! Love the design!

@melbrooks5816 4 жыл бұрын

As always, bloody brilliant. Thanks for taking the time to explain and show in detail.

@robwigglezz944 4 жыл бұрын

The production of your videos just keeps getting better and better. Thanks for the quality content.

@kellerrobert80 4 жыл бұрын

Glad to see you're still in your kirk doing the werk.

@Peter-V_00 4 жыл бұрын

I really enjoy seeing your techniques, those subtleties are very useful, thank you for the great video.

@shirothehero0609 4 жыл бұрын

New Stefan?! This is like being free from lockdown and quarantine! LIKE LIKE LIKE! Thanks for the pick me up sir! We always get a little pep when you post something new.

@shirothehero0609 4 жыл бұрын

Btw, does anyone else hate the new YT comment system? Been driving me crazy.

@Youtubeforcedmetochangemyname 4 жыл бұрын

@@shirothehero0609 it hasn't changed on mobile what is different

@liamjohnz7896 4 жыл бұрын

@@KZfaqforcedmetochangemyname You are really Wacko:):):)

@shirothehero0609 4 жыл бұрын

@@KZfaqforcedmetochangemyname in order to see the comments, you have to find and hit the comment line that is sometimes a random persons comment or sometimes a blank line for you to start typing. Instead of seeing all of the comments directly under the video, there are now related videos underneath from other content creators. I'm use to almost immediately opening the vid description or scrolling down to see comments and I find myself constantly tapping on someone else's video. Just an annoying change.

@donjohnston9554 4 жыл бұрын

Yap, nothing like a good pep up these days down in my bunker.😁👍

@jasonh3109 4 жыл бұрын

Making parts AND impressing people. Well done Sir! As always.

@davescreations7793 4 жыл бұрын

You always seem to amaze me with what you can do on a small lathe thanks for what you do it inspire’s me to do more

@paulbuckberry7683 4 жыл бұрын

I am in awe of your ability Stefan..........great video, thank you for sharing!!

@samcoote9653 4 жыл бұрын

Ohh the fit of the gripper inserts in that bore is so satisfying. Ill never get tired of your commitment to above excellent fit and finish Stefan

@stumccabe 4 жыл бұрын

An excellent technique - great idea. Thanks Stefan.

@tomhood8897 4 жыл бұрын

Very cool solution, Stefan! Thanks for sharing!

@USCouplings 4 жыл бұрын

Stefan great video as always. Great solution in the mechanical arts.

@warrenjones744 4 жыл бұрын

Well done as always Stefan.

@mr1enrollment 4 жыл бұрын

Very much enjoy the idea that You Tubers share ideas and transfer to all of us the wisdom. thx

@RRINTHESHOP 4 жыл бұрын

Very nice setup, I really like it. Thank you for sharing.

@GenericAnimeBoy 4 жыл бұрын

10:00 So precise that the chips just pile themselves up neatly.

@kevinknowlton5460 4 жыл бұрын

Buddy you are spot on and a good instructor/ teacher !! Nice tutorial . Looks like you have some good quality tools to work with as well. Cheers bud !!

@mpetersen6 4 жыл бұрын

When running delrin in a small lathe I used to like to get the material come off in a long stream that went straight into the waste receptacle. Made clean up easier 😁

@StefanGotteswinter 4 жыл бұрын

Until the chip catches and the whole content of the trashcan goes back towards the lathe :D

@mpetersen6 4 жыл бұрын

@@StefanGotteswinter Most times the cuts were only about 20 or 30mm long. Small number of parts. Or one of's. Special tools mostly. The small lathes we had were Hardinge HLV-Hs. 3 of them (early 60s) had the electrical cabinet mounted high on the back side. The chip pans were a real PITA to clean out. The 2 newer ones (74) had them mounted down low for easy access. I'd love to have one but used good ones go for stupid money in the US. As bad as Monarch 10-EE's. www.ebay.com/itm/1976-METRIC-HARDINGE-HLV-H-SUPER-PRECISION-TOOL-ROOM-LATHE-HLVH-HLV-FEELER-SHARP/303549692404?hash=item46acf8b9f4:g:sE8AAOSwj19eo1fL Even worn out ones (generally abused) ones get 4 or 5k www.ebay.com/itm/1977-HARDINGE-HLV-H-SUPER-PRECISION-LATHE-ANILAM-DRO-HLVH-HLV-FEELER/293556132346?hash=item44594f19fa:g:BbcAAOSwqXRc1I-k Parts on FleeBay aren't cheap either. I have no idea just what an equivilant German or Swiss lathe goes for but these are extremely nice lathes.

@TheUncleRuckus 4 жыл бұрын

I always look forward to your videos. Thanks for making them 👍👍

@tomeyssen9674 4 жыл бұрын

Really nice. Great idea! Thank you for sharing.

@lynnbryant9866 3 жыл бұрын

Even without a face mill, I'm still impressed. I don't comment often here, but know that I jump on each of your new videos immediately. Always enjoyable. Thank you for sharing what you do.

@kentuckytrapper780 3 жыл бұрын

Well I'm impressed, great job man.

@Engineerd3d 4 жыл бұрын

I always learn something from you. Awesome work. Thank you!

@SamEEE12 4 жыл бұрын

I am a simple man, I see a Stefan Gotteswinter video; I smash the like button.

@StefanGotteswinter 4 жыл бұрын

Youre always one of the first, haha

@metalshopwithtroy5755 4 жыл бұрын

Thank you Stefan i enjoyed your video its pretty easy to envy your work Keep up the great work

@unknownapprentice625 4 жыл бұрын

Nice work. Reminds me of cat paw (diamond pattern) grippers on large production broaches, to grab rough castings. Great detail as always. Thanks.

@2lefThumbs 4 жыл бұрын

Great food for thought, thanks Stefan👍

@AmateurRedneckWorkshop 4 жыл бұрын

Impressive chuck jaws. Thanks for the videos.

@billdlv 4 жыл бұрын

Nice job Stefan! I like your vise stop for the mill.

@lorenlieder9789 4 жыл бұрын

Great idea for holding your work piece Stefan.

@TomChame 4 жыл бұрын

Excellent idea, thank you.

@andreaserngren 4 жыл бұрын

I work at the SSAB Oxelösund where ToolOx is made, Have flame/Plasma cut our materials for years now

@mikemichelizzi2023 4 жыл бұрын

I like your SNC (Stefan Numerical Control) programming demonstration on the mill!

@JohnSmith-sf8gj 4 жыл бұрын

I like your table and vice covers. It's a good idea and I'm going to do the same. My mill is a mess when I'm done with it.

@tinker5349 4 жыл бұрын

Hello Stefan, very well done interesting chuck modification.

@ApukEldar 4 жыл бұрын

Bravo Stefan, bravo!

@StefanGotteswinter 4 жыл бұрын

Thank you!

@rpmunlimited397 4 жыл бұрын

great video. amazing as always

@ChrisR2517 4 жыл бұрын

Thank you Sir Stefan The best explained milling video I have watched. A New Subscriber..

@StefanGotteswinter 4 жыл бұрын

Thank you!

@SpencerWebb 4 жыл бұрын

Nice work! 👍

@StefanGotteswinter 4 жыл бұрын

Thank you!

@hansbjaeke3414 4 жыл бұрын

Dang it! I wanted to go to bed and now I have to stay awake for another 38 minutes. But what can I do - Stefans Videos have to be watched right away 😁🤗

@Youtubeforcedmetochangemyname 4 жыл бұрын

Didn't seem like 38 min but upon further inspection it most defiantly is I will chalk that up as a sign of a good KZfaq make interesting videos that don't seem long at all

@anonymousgeorge4321 4 жыл бұрын

Great video. Thanks.

@FredFred-wy9jw 4 жыл бұрын

You just solved this morning’s work holding problem ... finished lunch back to the shop

@HH-Machining 4 жыл бұрын

I need to copy your vise stock stop :) Those gripper jaws are brilliant!

@arnljotseem8794 4 жыл бұрын

Cool. I've seen these commercially made from Mitee-bite, but very cool that you made them from scratch. I think we will see a lot of these on YT and IG now

@DimIsHigh 4 жыл бұрын

"I don't need to impress somebody I just have to make parts" ❤

@curtisvonepp4335 4 жыл бұрын

Stefan. The Dove Tail hold down system works on the milling table to .Amazeig how strong this system is .👍😎

@lwilton 4 жыл бұрын

If you cut some grooves in the inside of those gripper holders you can use them as normal outside jaws to grip a part for an op-0 where you turn the saw-cut end of a blank flat before reversing it and holding it in the grippers.

@Gottenhimfella 4 жыл бұрын

By gripper holders, I presume you mean the top jaws (which bolt to the ex-factory master jaws)? Good idea.

@hadinossanosam4459 4 жыл бұрын

28:15 You can already see the first flat spot on the gripper insert. Good thing you made them simple and replaceable

@Gottenhimfella 4 жыл бұрын

That's no doubt a result of his inability to air quench with sufficient haste. But it vindicates his choice to make them concentric, and accurate. I was thinking why not make them slightly eccentric to enable a sort of "Set-Tru" adjustability, but on reflection that would be a pain to adjust, and also would remove the ability to simply rotate the damaged portion out of the working zone. I love circular carbide inserts for that same virtue. Plus with no corners, they're tough as.

@StefanGotteswinter 4 жыл бұрын

I made already new ones out of O2 toolsteel, which I can harden way more reliable and repeatable ;-)

@StefanGotteswinter 4 жыл бұрын

@@Gottenhimfella Making them excentric is a cool idea, but I think I can go without, as they are only used to hold raw stock

@robertwatsonbath 4 жыл бұрын

Nice job Stefan, enjoyed. I initially wondered why you had sheet metal covers on the vice. When you had to remove the rear one to use the stop I saw why. Those big socket head screws collect the chips really well! On the plus side is you get a nice notepad for your dimensions :)

@Davemte34108 4 жыл бұрын

Thank you, Stefan. My first projects will be in plastic.

@wayneacaron8744 4 жыл бұрын

dam, my head hurts. good work!! poppy

@bobvines00 4 жыл бұрын

Stefan, thank you for this educational video. I'll have to try this some day. Also, LBF-FT means "pound-force foot" (or "Pound-Foot" when used for torque) for an imperial equivalent to N-m.

@thomaswehrmeyer9641 4 жыл бұрын

A very useful video. The chuck on mt lathe is the type with 2 sets of hardened jaws, inside and outside. It is getting time to but a new chuck with reversible jaws. Here in the USA torque was measured at a distance in feet times a weight in pounds tangent to the device to be measured torque was in ft lbs. Some where in the 1980's some one in the USA reversed the equation which then became lb ft which of course is the same. A newton if I remember correctly is a kilogram x 9.8 m/s2 applied at the distance of 1 meter equals 1 nm. If you weigh your kilogram with a scale on earth you already have the 9.8 term ( acceleration due to gravity) . If you where tightening your bolts in outer space you would need a clicker type torque wrench.

@anarcowhatever 4 жыл бұрын

You are getting funnier with age. Like a proper machinist.

@andywander 4 жыл бұрын

Abom-size cuts! Nice!

@shaperandi5158 4 жыл бұрын

Thank you very much

@stephenbrowy9825 Жыл бұрын

This is a o D wood tuner trick.learned it in highschool.

@andyZ3500s 4 жыл бұрын

You gave me alot to think about with this setup. I think that I might make some soft jaws for the mill vise, you could switch the grippers from the lathe to the mill vice. I took a quick look at the Mitee--bite website, they sure have expanded their product line. My catalog is from 2000.

@EmmaRitson 4 жыл бұрын

very cool!

@minigpracing3068 4 жыл бұрын

Very interesting, I need to get a lathe at home for a few projects.

@captcarlos 4 жыл бұрын

Don't do it! It's a trap, a rabbit hole we have gone down and Never find our way back. I kid you not! But, I've got more, better, bigger.. Aaaahhhhhhhhhhhhh

@minigpracing3068 4 жыл бұрын

@@captcarlos I know, I have a cheap micro mill that now has every available upgrade attached to it. Even before the upgrades I spent around $600usd for the mill, and $1000 on tooling.

@maxcnc777 4 жыл бұрын

Good stuff man. I have used the method popularized by Peter Stanton since before I'd heard of him, and it works great for CNC situations. That method is overkill for your tiny lathe.. but the versa grip idea is perfect. I've made my own almost identical to yours, but find that the actual Mitee Bite versa grips still work better... even though I've used the hell out of mine. Regardless... as always, good job.

@reiniertl 4 жыл бұрын

Whether you use a face mill or not you are a pretty impressive machinist. Keep making parts though!

@Madmalssss 4 жыл бұрын

The "I'll be back" at the end XD

@dotygramp9109 4 жыл бұрын

😀 I'm impressed! Another very impressive video! Those grippers surely do make quite an impression in the part, verifying a good grab! You've impressed me since I first found your u-toobe channel, years ago! 😉

@helloarigato 4 жыл бұрын

Really nice design. I suppose you could use the same jaws to hold a part from the ID as well

@StefanGotteswinter 4 жыл бұрын

definetly!

@tuffymartinez 4 жыл бұрын

Thank You Stefan...I always enjoy all of your videos and I each time I think when you are using your mill, lathe what ever you always have certain comments about the flaws, backlash. We all have disputes when using our machinery. What I always think is "how would Stefan Gotteswinter design his perfect mill or lathe if you had control over the entire design".

@bcbloc02 4 жыл бұрын

Mighty bites for the lathe!

@gasparini76 4 жыл бұрын

Hello from the Banker! :)

@Preso58 4 жыл бұрын

Great idea and well executed. I am thinking you could make some indexable hex inserts which could be machined to different radii. Sort of like a set of pre-machined soft jaws.

@Gottenhimfella 4 жыл бұрын

Good idea. John Stevenson did this exact thing, a while back.

@benrivenbark 4 жыл бұрын

Wait, when did he switch to a Multi Fix tool holder? And the milling vice was new to me.....

@matttradie1341 4 жыл бұрын

👏🏼🇩🇪standing up for the metric system since the 80s (lbsft whatever that is 😂)

@FesixGermany 4 жыл бұрын

"8 lbf... ft... whatever that is" Yes right, we don't need measurements in bathtubs per footballfield.

@StefanGotteswinter 4 жыл бұрын

Bratwurst per second! :D

@lukahutinski9075 4 жыл бұрын

Bratwurst per secund second sounds SI complient unit for a german speaker XD

@lotharerkens8154 4 жыл бұрын

@@lukahutinski9075 Hotdog per wink for Imperial Measurements

@juanrivero8 4 жыл бұрын

One of the many, many faults of the Imperial system is that the word "pound" is ambiguous. A pound may be a unit of mass or it may be a unit of force. You cannot tell which without some disambiguation so careful writers distinguish between pound-mass (lbm) and pound-force (lbf). A mass of one lbm subjected to an acceleration of one foot/sec**2 requires one *poundal* of force since even the Imperial system cannot disregard F=ma. Contrariwise if you use lbf as a primary unit, then you must express mass in *slugs*. I wish I were making this up but I am not. I have used both lbf-based and lbm systems and it is annoying to say the least. I learned this in engineering school and also learned that most people do not understand the difference between mass and force, since we inhabit a planet where the gravitational acceleration is mostly constant.

@666Tomato666 4 жыл бұрын

@@lukahutinski9075 it is, but it's a unit of energy use, not force applied

@joeziegler9054 4 жыл бұрын

Hey Stefan great video. Just a little FYI about working with pre-ground steel. Every piece I've ever worked (A2,D2,S7) has NOT been ground square from the supplier! This has caused me some grief when trying to grind a piece I made down to finish dimensions. Just saying guys check that pre-ground steel for squareness before you start working with it!

@melgross 3 жыл бұрын

This is like my Miti-Mite jaws for the Kurt style mill vise. I wonder if Robert was inspired by those. They’re pretty well known.

@OstapHelDesigns 4 жыл бұрын

Nice!

@a320214 4 жыл бұрын

Congrats !! German Super High Precision. !!

@somebodyelse6673 4 жыл бұрын

That dovetail workholding looks like it will work well for threading away from the chuck. The workpiece can't "walk out", which is my only real concern there.

@mpetersen6 4 жыл бұрын

At 10 NM/8 FtLb on the pinion I know you have to actually be putting much more force with the jaw. The scroll in the chuck can be thought of an inclined plane that wedges the jaw

@Skraap 4 жыл бұрын

"Rought to 17.000 mm"

@MrLembnau 4 жыл бұрын

i was thinking the same thing. measuring your rough dimension with a 0.001 resolution micrometer.

@kemc77 4 жыл бұрын

than bring down to 16,000000 :)

@davidcolwill860 4 жыл бұрын

Hi Stefan, Peter at Edge precision uses a kind of circular dovetail on very heavy steel and exotic parts. Perhaps if you were to want to hold heavier parts, machining the profile of the jaw into the part as a starting point, would allow for much heavier work if needed. Thanks for sharing.

@davidcolwill860 4 жыл бұрын

Next time I will watch until the end before commenting :)

@howardosborne8647 4 жыл бұрын

Stefan,those jaws are a great plus for saving on waste material stock. That is a very secure grip indeed👍 lb-ft? My torque wrench is even more confusing,it has kg/mtrs on the sleeve. I can't imagine whatever they are 😂. They sound like they could be 10 times harder to interpret than Newton mtrs.

@richardmeyer418 4 жыл бұрын

Hi Stefan, thanks for the videos. It's always a pleasure to watch them. What is your QCTP, please?

@Gottenhimfella 4 жыл бұрын

It's either a Swiss Multifix or a clone thereof. www.lathes.co.uk/multifix/

@pingyuanzhenghaomachinery2286 4 жыл бұрын

Wow, nice video! I saw the vise in the video, we also have it:)

@alasdairhamilton1574 4 жыл бұрын

Bravo 👏🤗👍🏴󠁧󠁢󠁳󠁣󠁴󠁿

@wktodd 4 жыл бұрын

I like them a lot ;-)

@manusholm3536 3 жыл бұрын

what would you say is the best oil hardening tool steel for the home shop. a do all , stable and some what predictable tool steel that one can oil quinch with simple tools. temprature by couler....... we have a suplier of bohler oberhom in town so happy to hear.

@daveticehurst4191 4 жыл бұрын

Could you use these to expand outwards using a bored recess or say a piece of tube.

@crazyfeller5704 4 жыл бұрын

I’ll be back!

@drubradley8821 4 жыл бұрын

Would it be a bad idea to cut a small slot on the jaws faces, right in front of the dove tail crimping area, where the material deforms towards the direction to the chuck? or would that translate into less gripping force, as the material in now allowed to be squished easily out of the way, towards the chuck?... Clever system, like you stated, this opens up a large amount of clamping processes ,by means of just changing out inserts

@sansdecorum4600 4 жыл бұрын

Stefan, I recall you having used a specialized epoxy to permanently tram and strengthen the mill's column to base connection. Still, I've heard you occasionally mention the inherent lack of rigidity in these type of bench mills, but you always have a process work-around to compensate and your work is always impressive. Would welding up an overbuilt stand with some sort of integrated triagulated strongback for the column be worth the effort or is it better just to live within the limitations and call it a day? I ask as I am considering purchasing a similar heavy duty Chinese bench mill and would be building a stand anyway. Thanks for all your fine machining content and the very welcome relief from lockdown boredom.

@bid6413 4 жыл бұрын

Stefan, why are you using the 30 position tool post for this project? To allow you to use a collet holder for the end mill? Why not use a 40 position style tool post for more of your projects? Cheers, Will

@pgs8597 4 жыл бұрын

G’day Stefan, excellent jaws, little scrap stock but what is the smallest stock you can hold? Why not mount the jaws at the inner tip say 3.mm in for a land. Cheers Peter

@lucwybo 4 жыл бұрын

Stefan, Nice video and interesting method for clamping soft materials. I noticed two things: 1: New QCTP on your lathe, instead of Tripan tool holder 2: New clamping screw on your milling machine with a price range of 400 to 600 euros. What is the discredit and reason for renewal of the old compared to the new? Vriendelijke groeten,

@camperlab6546 4 жыл бұрын

Gripper jaws are the future.

@nowayjerk8064 4 жыл бұрын

those inserts are fairly small why not turn a stainless tube and make caps to seal it for heat treat ? thanks for sharing!

@thomasa5619 4 жыл бұрын

Hmm, if you had ground the grippers with the sharp angles, and a small radius, you’d end up with 3-6 points you could use, without having to produce 3 extra parts + bolts/thread? I guess I’m saying I’m curious of the purpose of the roller style gripper?

@the_hate_inside1085 4 жыл бұрын

Toolox is Swedish steel. Swedish steel, is the best steel. Everyone knows that. I used to work at a SSAB steel mill in northern Sweden, it was very cool industrial facility. A high percent of the production, was high alloy specialty steels.