In this video I discuss the power feed on my Harig Super 612 surface grinder and the outboard spider on my Precision Matthews 1127 lathe.
Пікірлер: 83
@anthonycash46095 жыл бұрын
If the power feed works for you who cares what the negative ones have to say. If we hadn't let the imagination in us to at least try things we would still be travelling by horse and buggies. As a hobby machinist I get very good ideas from the videos of you all who post them. Remember Lee if only 1 person learns something from watching your videos then you have given him or her something no one can take away from them. I personal love the projects and things you post. Thanks for the time and work you put into them to share with us.
@Butterbean005 жыл бұрын
Arguably Lee makes some of the best machining videos for a hobby guy like me. Thanks for all your help and ideas.
@jefflyon1008 ай бұрын
Great job, it looks like it's supposed to be there! I did something similar on my elite ar5-e tool and cutter grinder, based on your design.I mounted the bodine gear motor to the machine frame though, on a pivot where the drill attachment would normally go. On the table i have a block with a 3/4" shaft (for the reciprocating arm to mount to)To handle the y axis table travel (only 5") i have a 5/8" thomson shaft mounted (90 degree)on the adjustable x axis motor sliding block. The arm has two side by side roller bearings that attach to the 3/4" table shaft, on the other end is 5/8" thomson linear bearing. The linear bearing and shaft handle the 5" y travel. The x axis length adjustment part is almost identical to yours. I mounted it to the frame so the arm can be removed, the motor is on a pivot and can be swung out of the way when in regular use. Less than 2 minutes setup time. Next is a 50:1 worm wheel on the z axis. The worm gear gets attached to the backside of the z axis adjustment handle, the worm gets mounted to z axis body/frame, one turn of the worm is two thousands z travel. It flips up out of the way for regular use. It's also apart for maintenance and servo motor drive upgrade for spindle and new spindle bearings. I will post it when finished.
@ssss1111z4 жыл бұрын
Nice job and great explanation. I'm going to make one for my grinder. Lee, consider grinding the magnetic chuck in place to get it dead on 0.0000. Turn the magnetic chuck on and grind it's full length and width in one setting. Always measure the chuck run-out with the chuck on too. Also consider upping the linear velocity of the table about 25%. You will get a ripple free finish. For reference the table speed should be about as fast as windshield wipers on high.
@Mr7yhnmki82 жыл бұрын
I made this modification to my surface grinder recently. I did decide to mount the motor rigidly to the cross slide. I must say it works wonderfully. Its smooth as butter and quiet as a church mouse. Wonderful idea! Thanks for sharing your idea.
@MaturePatriot5 жыл бұрын
Thanks for the info on the grinder power feed. I thought you were using a stepper motor setup. You do excellent work Mr. Pragmatic Lee. That 29 minutes went fast. Time flies when you're watching an interesting video. Thanks! 'Til next time....Keep Machining!
@ftownroe5 жыл бұрын
Absolutely fantastic idea and design on the feed mechanism Lee. And your willingness to tackle the threading issue on the lathe spider shows great determination.
@JamesDedmon5 жыл бұрын
Something simple confounds a lot of folks. That is what the power feed design is. The spider for the rear is one of those projects that I’d like to do
@DK-vx1zc5 жыл бұрын
Thanks much for sharing this Lee !!!!! We really appreciate it.. Nicely done.. You are inspiring
@glennfelpel97855 жыл бұрын
I sure do like your attention to detail. Good demonstration.
@leonadeau28495 жыл бұрын
I REALLY LIKE YOUR POWER FEED. Very good explanation of of how to make the outboard spider.
@ActiveAtom5 жыл бұрын
Hi Lee nice to be here and have some shared time with you in the shop. What a great arm for your surface grinder we are very impressed, you really did no longer wish to grind by hand in the x axis. We did not know we have the same PM1127 as you do (we never need a lang bar feed action for ours, we just love KZfaq always learning. It the PM is our general shop 1 off piece maker when we need a part or tool part larger then our micro machine lathes can produce. Thank you for sharing with us, Lance & Patrick.
@supergarball3 жыл бұрын
Brilliant mod to the surface grinder. Can’t wait to pick one up some day.
@RagsdaleCreek5 жыл бұрын
Awesome video thanks for showing us all the feed and hod it was made and how it works. 👍👍👍👍👍 Watching in Alabama
@davidloftis31635 жыл бұрын
Excellent video Lee keep up the great work
@outsidescrewball5 жыл бұрын
enjoyed...great mod/addition to the surface grinder
@RyanWeishalla5 жыл бұрын
The powerfeed looks nice and very practical.
@JBFromOZ5 жыл бұрын
looking good mate! well played... thanks for sharing!
@dougvanallen22125 жыл бұрын
Lee very nice project what a great idea
@Engineerd3d5 жыл бұрын
That power feed looks interesting. I have been thinking about this for a while.
@sblack482 жыл бұрын
Very clever feed.
@charlieromeo76635 жыл бұрын
Nice work MrPragmaticLee. Pragmatism at its best! If my Jones and Shipman 540 did not have hydraulic feed, I would be making one of these right now.
@sharkrivermachine5 жыл бұрын
I have been waiting for the promised video on the power feed. I am interested in it for my grinder.
@DudleyToolwright4 жыл бұрын
I love the power feed. Very creative solution.
@hilltopmachineworks21314 жыл бұрын
Yeah I need to do that to mine at some point.
@txranger435 жыл бұрын
Excellent information. Thank you
@kudosjeg9 ай бұрын
I'm willing to suggest that the added weight and pressure from the drive motor is causing the deviation on the right side of the table ? Love the fabrication work and highly appreciate you sharing this. Just picked up a Boyer and Schultz myself hoping to get up to speed on these machining processes that my father put away long ago. Brought home my first mill recently and he lit up as he ran a Bridgeport for 10 years before his prototyping/maintenance mechanic carrier . I'm hoping to get some hands on with him before time takes control of the situation. Love the videos Mr Pragmatic,
@markcrotty50945 жыл бұрын
Love both ideas
@metalshopwithtroy57553 жыл бұрын
Love it. I would like to build it for my surface grinder what a great project thank you
@bobpfeiffer82035 жыл бұрын
Nicely done and you have no oil leaks as on a hyd. grinder. Great job
@1jtolvey5 жыл бұрын
GREAT VIDEO + WORK !!!
@user-he6my1eo4c Жыл бұрын
well thats 2 things i gotta have now thanks for the share
@edwardcook99575 жыл бұрын
Thanks for the great ideas.
@user-kr1jh1wi4w5 жыл бұрын
Cool work 👍
@mikenixon91645 жыл бұрын
I always say if it works for you its great.. Good video.
@EDesigns_FL5 жыл бұрын
Thank you for showing your power feed. Great design. I have a suggestion for making it a little simpler to adjust the stroke length. Cut a slot in your arm to accept a through stud in the center with a hand lock nut to retain it to your motor adapter. Modify your motor adapter with a female slot to accept the arm and no outside cover. There are lots of ways to add power feed to a grinder. I was thinking about using a stepper motor to drive the hand wheel via a belt, and use limit switches to set the travel ends. Your solution appears to work very well. The only issue is the oscillating travel speed, but it doesn't look like it's causing you any problems.
@shawnmrfixitlee64785 жыл бұрын
Nothing wrong with anything you have done . It works if you work it , You did and it great ! ..ENJOYED ..
@wallbawden55114 жыл бұрын
Hat off mate works real good I would never be able to get a surface grinder but have now gained an idea to use something similar over the top of a belt sander have worked it out on paper will be a down time project project but will work fine
@frankinpattaya5 жыл бұрын
Thank you for sharing, regards Frank
@CraigLYoung5 жыл бұрын
Thanks for sharing!
@willisworms5 жыл бұрын
Add my thanks for this video, I've been looking forward to it
@ralfkessler Жыл бұрын
I think it is a great idea
@kennyd.57435 жыл бұрын
Thanks Lee!
@moms7624 жыл бұрын
I think the power feed on the Grinder is COOL. Only problem I see is possibly getting something tangled or wrapped around it while it’s spinning.
@AmateurRedneckWorkshop5 жыл бұрын
I like the power feed, very clever. I would love to have a spider on the outboard side of my lathe but so far I have not made one. Too lazy I guess. Do not pay any attention to the nay sayers and the rain cloud onlookers. If they do not understand it then it has to be bad in their opinion. I have been watching you since you got started on youtube and if you say something will work I have every reason to believe it will.
@AmjadAli-fk1lx3 жыл бұрын
Vare Vare nice video
@Conno92205 жыл бұрын
I have a walker 6x12 which which looks identical to yours. (Harig bought them I think) It has a rack and pinion. I’m hoping to add a power feed to it like yours. Thanks for sharing. I still would love to see any build videos on the project.
@marcellemay77215 жыл бұрын
You can grind that magnetic chuck in right as it sits on the machine. It's a simple thing to do. You should be able to get that thing dialed in perfectly. The only thing that would prevent it from being prefect, or close to it, would be wear in the ways.
@kristoferjonsson33625 жыл бұрын
Great modifications! You have some of the best projects on KZfaq imho. I have a lathe just like yours but it's called "Nova 290vf". The lock nut you took of is used to adjust the spindle bearings. Have you made any locking feature on the spider?
@crazyfeller57045 жыл бұрын
Simple and effective. Any thoughts on something similar as a powerfeed for the other axis? You’re a smart and inventive guy, I think you could do it if you put your mind to it with the same motor, linkage and some limiters. Pay no mind to the nay sayers, I am always impressed with your k.i.s.s method of solving problems or upgrading.
@cgrobe214 жыл бұрын
I love that. Very intuitive. Do you think a counter weight on opposite side like a fixed pendulum would take that slight pause and bump out of it. It would keep a steady pressure on it but like you said its working fine and not causing a problem so its fine like it is. Great idea though.
@AmjadAli-fk1lx3 жыл бұрын
Vare nice sair I am so happy
@bbbnz502 жыл бұрын
Hi Lee Thanx for your time an effort you put into your video's I want to do the same on my Targa 612,, Can you please tell me how long your pitman shaft is ? and length of flat ali plate that goes to motor drive thanx
@williamjohnson28965 жыл бұрын
Lee great job and don't see any problems with it. Have you ever seen a twin shaft system with eliptical gears set up to make the table speed approximately the same from end to end? The guys worried about a speed change consider it.
@kpsierens2 жыл бұрын
Wow, what a great idea! I am thinking about getting a Harig Super 612 for my little shop. Can you tell the bases dimensions, the length of the table, and the height to the top of the tube protecting the lead screw?
@shawnhuk4 жыл бұрын
You think there would be any long term concerns with the arm torquing the table around unevenly wearing the ways?
@kokkiantehhermes90174 жыл бұрын
Hi,lee, how's the flat bar screwing up with round rod?
@ralfkessler Жыл бұрын
Is the a more complete video available??
@hitoortega16164 жыл бұрын
I found you video excellent explain I will love it ,Need the information of the motor Please be safe with cov.19 thank Antonio
@jamesbowenjr.3022 Жыл бұрын
question, did you have any kind of preference when you bought your surface grinder . I want to get one but I am having trouble deciding what to get not that I get stuck with something I can't get parts for. Not looking to spend a whole lot of money its only for a hobby.
@jamiebuckley17695 жыл бұрын
exellent video lee thanks for sharing this info as i have the same harig grinder as you have. except for i have a rack and pinion gear for my table movement. i would love to build the same riggin as you have there. i would like to know what diameter is the round piece hooked up to your motor? you didnt mention that in the video.
@MrPragmaticLee5 жыл бұрын
Jamie Buckley I started with a piece of 4" diameter material and turned it down to 3.5".
@jamiebuckley17695 жыл бұрын
@@MrPragmaticLee thanks for the info lee much appericiated now im going too make it. have a good day.
@jagboy692 жыл бұрын
Hey Lee, I have a Boyar Schultz 612 and my table wheel pulls out to a neutral position and doesn't spin. Try your Harig and see if it does the same thing. It just might save you from taking a whack to the sack. :-)
@MrPragmaticLee2 жыл бұрын
Thanks, I’ll give it a try when I head out to the Tin Barn later today.
@jagboy692 жыл бұрын
@@MrPragmaticLee If you need me to demo it on my machine, let me know. Mine is spring loaded.😉 If you have any ideas for a jig to sharpen lathe tooling on the surface grinder, I'm all ears. I suck grinding hss on the bench grinder. Thanks!
@jagboy692 жыл бұрын
I took a closer look at my boyar schultz 612 today for you. 1st understand this machine has a rack under the table. So, my handle is spring loaded to the engaged position. I can pull it out to allow me to clock the handle for a comfortable position. Now, if I machine a spacer to keep it disengaged from the rack, my table freely slides side to side and the handle can't spin and try turn me into a woman!
@camarillojohn5 жыл бұрын
I want to order the same motor that you have used, What is the Specs on it.Very nice conversion.
@MrPragmaticLee5 жыл бұрын
? I give all the specs in the video and even show a close up of the gear motor badge. Thanks for stopping by.
@jorgescordamaglia16545 жыл бұрын
Hi Lee: It is possible for you to send me the link to those DC Motors? By the way, maybe you should clarify to your viewers that the torque is in In.Lbs. not to be confused with Ft.Lbs. Thanks from Toronto, Canada Jorge
@MrPragmaticLee5 жыл бұрын
Jorge Scordamaglia I just search eBay for 24 vdc Bodine gear motor. I had a repeat seller I bought several from but he has disappeared. You’ll need to shop around on eBay since the prices varies greatly between sellers.
@dennisvasquez84593 жыл бұрын
Greetings Friends, I would like to know if you can give me the specifications of the engine you use in advance, thank you
@MrPragmaticLee3 жыл бұрын
Email sent
@gusmcgussy32995 жыл бұрын
Plus you do realise that every grinder jumps slightly whenever direction changes.. maybe a tenth or two so try to stay away from grinding at the extreme left or right...
@dizzolve5 жыл бұрын
was this all your idea? genius
@ralfkessler Жыл бұрын
Tidbit video???
@gusmcgussy32995 жыл бұрын
Assuming of course the very first thing u did was grind that chuck when the grinder was put on your floor.... Your supposed to grind your chuck anytime machine is moved
@gengen4653 жыл бұрын
that looks like my design on my vintage delta surface grinder I did over 6 years ago. video is here kzfaq.info/get/bejne/rLF_iceisdPPdmw.html
@gusmcgussy32995 жыл бұрын
That's not your chuck that's the ways in the machine ... The center is where the ways wear most
@ninetwenty5 жыл бұрын
Hate the music.
@richkellow15355 жыл бұрын
Rather bad audio and the lighting makes it hard on the eyes.