1941 Grenby S1 Surface Grinder with Powered Table & Auto Feed. Showing both in operation.

Рет қаралды 793

Күн бұрын

My thoughts and conclusions for adding Powered Table Feed and Automatic Saddle Feed. Walk through showing the modifications I did and how they operate.
EMAIL davesozzworkshop@gmail.com

Пікірлер: 39

@michaelmurray9154 2 жыл бұрын

This project is probably the most difficult one I've seen on KZfaq. Accomplished with very elegant engineering and machine work. Love the photo work. Kudos to you Dave!

@daveticehurst4191 2 жыл бұрын

Thanks Mike glad you liked the content. I was trained firstly as an Instrument Maker, hence the nicely finished modifications and eye for details. I then transferred to being a Machine Tool Fitter or as some call them, Mill Wright. That is why I have no hesitation about repairing or making machinery parts. Going to do a video on the DoALL soon, no actual video content of the rebuild but a long slideshow of the strip, repaint and rebuilding of it. Stay Well Regards from Australia.

@learningturningmetal 2 жыл бұрын

Hi Dave - what can I say! You are a very talented engineer. The motion of the arm is majestic. The quality of your workmanship is amazing. Keep the videos coming! All the best. Andrew

@daveticehurst4191 2 жыл бұрын

Thanks Andrew, much appreciated for watching and the encouraging reply. Not wishing to blow my own trumpet, but I was apprenticed at Philips Research Labs, to be an Instrument Maker, a toolroom environment without the making of tools. We had to make precision parts for the scientists, complete assemblies sometimes that not only had to function but look great as often Scientific Papers were written about the item as sometimes it was a new invention, and were eventually photographed for publication. Hence my sometimes ingenious assemblies looking to a high standard of finish. Regards, Stay Safe.

@johnmagpali16 Жыл бұрын

Watching again, on your old videos sir, ao very nice and another great video, thanks for your sharing

@daveticehurst4191 Жыл бұрын

Thanks again John. So glad you are finding pleasure in my workshop machinery. Thanks for watching. Regards.

@TheKnacklersWorkshop 2 жыл бұрын

Hello Dave, Another good video... please keep the videos coming, they are very interesting... thank you... Take care. Paul,,

@daveticehurst4191 2 жыл бұрын

Hi Paul, thanks for that. Uploading another one as I write this. Hope you will enjoy that one too. Stay Safe and Well. Regards from Australia.

@andrewdolinskiatcarpathian 2 жыл бұрын

Ingenious solutions, expertly crafted. Inspirational sir. 👏👏👍😀

@daveticehurst4191 2 жыл бұрын

Thank You for taking the time to watch my video, very much appreciated.

@daveys 2 жыл бұрын

I like the mods you’ve done on this surface grinder. Nice combination of old and new(er) tech!

@daveticehurst4191 2 жыл бұрын

Glad you like it! Hopefully there is not another one like it anywhere in the World, could be a museum piece one day. Thanks for viewing. Merry Christmas and a Happy New Year to you and the Family.

@MrCrispinEnterprises 2 жыл бұрын

Well done Dave another nice video showing some in depth modifications. Highly competent work as ever. I particularly liked the jog button feature and the lights on your electrical cabinet. How about a workshop tour video?

@daveticehurst4191 2 жыл бұрын

Hi Crispin, thanks again for your positive input. A shop tour is already being planned, I have already run through in my mind how to show it and what will be said. Whilst I am in the swing of it, I am going to do number 3 of the grinder today, telling the story of how I got it, re machining etc. So watch this space.

@TrPrecisionMachining 2 жыл бұрын

very good job dave

@daveticehurst4191 2 жыл бұрын

Thanks for watching and commenting, very much appreciated.

@catherinefernandez09 Жыл бұрын

John Magpali Sent me here to subscribed and support on your channel

@daveticehurst4191 Жыл бұрын

Thanks for joining. Enjoy my content. Regards.

@jonsworkshop 2 жыл бұрын

Well done Dave, excellent work, really top notch. Lots of hours have gone into that. Think I will have to stick with Popeye for now, the electronics are way out of my comfort zone. Think I will be looking to power traverse the mill x axis as a starter for 10, if that goes well, I may consider this mod to my Eagle SG eventually. Cheers, Jon

@daveticehurst4191 2 жыл бұрын

Jon, PLEASE feel free to ask me for advice or information when you are ready for mill drive feed or anything else come to that. Thanks for taking the time to watch my videos.

@craigsbully 2 жыл бұрын

very nicely done!

@daveticehurst4191 2 жыл бұрын

Thank you kindly. Glad that you enjoyed it. Regards.

@Jesuspaug21 Жыл бұрын

Newly subbed here, John Magpali Brought me here

@daveticehurst4191 Жыл бұрын

Thank you. Regards.

@irinesuaverdez Жыл бұрын

Newbie here sir John Magpali Sent me here

@daveticehurst4191 Жыл бұрын

Thank you Irine. Regards.

@laurieosborne7695 Жыл бұрын

Hi Dave - I have watched a couple of you tube vids on fitting the table drive - I do not like that the motor is attached to the moving table , I have seen 1 where the motor mounted stationary and the Arm was connected to the table I had not thought of a cross feed - but I like the idea of a manual feed along the lines of a shaper rachet pawel , that gives you forward , reverse no feed and with the adjustable arm you can control the amount of feed per stroke I like the Idea of KISS = keep it simple stupid , but with a stepper motor , Hall sensor and setting magnets different voltages it seems abit over complicated But if it works for you fine - I enjoy your you tube vids - showing these old toolmakers tricks on how things were done before CAD / CNC before computers run the machines With a manual lathe or mill you can do anything , But I have been seeing old cnc machines coming up for sale but they are only good for scrap iron , programs outdated and not supported diffcult to convert to manual Anyway Keep showing people the old ways Thanks for taking the time to make the Vids Laurie

@daveticehurst4191 Жыл бұрын

Hi Laurie, thanks for watching. With regards to the motor being fixed to the table it was my only option, to get the 12 inch table movement I needed a 6 inch radius arm on the motor and there was nowhere for it to fit easily. With the way I have it, I can disconnect the arm, rotate the motor enough so that I can park the table fully right when not in use to give me room to walk by. Was no way I could do a manual ratchet feed on the saddle as it would have been needed to be fitter on the hand wheel. When made new it was meant to be a benchtop hand operated grinder, just tried to bring it into the 21 Century technology wise and make it automatic to save my are with winding the table to and fro. Thanks for the comments. Regards.

@laurieosborne7695 Жыл бұрын

@@daveticehurst4191 Thanks for the reply - What ever works for you at least you made it yourself and worked through the problems - these days it is so easy to buy new from China or India my last lathe came from a polytech , secondhand with only 780 hours use [ it had a hour meter fitted ] they ditched 8 manuel lathes to install 3 machining centre's ,the way industry is going Keep showing the old tricks the vids will be around long after you are gone Thanks Laurie

@pir869 2 жыл бұрын

The protection diodes will work up to their PIV rating ,that's "PEAK INVERSE VOLTAGE",So if you crank by hand fast enough you "may" damage the protection diodes,i'm not an expert on stepper drivers,and i have not measured the voltage generated by a manually spun stepper. I too have a lathe and a mill,which i would like to add some steppers to get constant feed rates for nicer cuts,i was thinking about this issue and the simplest fix for me as the machinery is there,is to make sliding dog clutches with ball detents to hold while in or out of use,hand cranks and shafts can have new mounts on one end of a dog clutch shaft,so pulling the hand wheel can disengage the dog from a slipping dog for the stepper but still be able to crank the lead screw,or push to engage the lead screw on the stepper drive,the position of the drives may need to be reversed so you don't have to spline drive the hand wheel,but it's simple to fix on paper first,a couple of slip collars with dog engagements to slide back and forth,easy enough and no more worries of brown out diodes-freewheeling diodes. Also a stepper could be used with a limit switch either end of the stroke using the hand feed wheel with an arduino programmed to reverse the direction of a stepper when travel reaches the limit switches that send a grounded pulse,transformer bobbin winders on youtube do this for each layer stop and reverse,just no need to count turns of a bobbin ,dead easy and compact. You've got the basis on the x axis. Cheers.

@daveticehurst4191 2 жыл бұрын

Hello John, thanks for the view and your comments. Good luck with the dog clutches. So far I have only used the grinder a couple of times since the stepper motor was fitted. Belt off once for rapid movements to set up. The other time I just upped the feed rate to wind it across under power. Regards.

@joseph95850 Жыл бұрын

New subscriber here watching now , My friend John Magpali invited me here

@daveticehurst4191 Жыл бұрын

Thanks for coming Joseph. Enjoy. Regards.

@JohnsOrganWorks 2 жыл бұрын

Thanks for another fascinating video, Dave. I love the mix of old and new technology. I was just wondering if there might be a case for mounting the hall effect sensor magnet on the rotating arm, rather than on the saddle, then it wouldn't need adjusting when the stroke changes?

@daveticehurst4191 2 жыл бұрын

Hello Jon, Thanks for the view and your question. I suppose you could but it would mean the sensor being mounted on the table. You would then have the problem of how long the cable would last being bent backwards and forwards as it went to and fro. And it would only be able to single feed instead of feeding at the end of every stroke as in a hydraulic feed table like the J & S machines. This way the sensor is fixed and the cable clipped in place. Regards.

@gordonfrank 5 ай бұрын

Thanks for making this video. For the back and forth where you used the wiper motor connected to an arm. Did you consider using another stepper motor with a belt to your hand crank? It would be similar to what you did with the feed wheel to advance inwards/outwards?

@daveticehurst4191 5 ай бұрын

Thanks for the view and your question. No I did not even consider a stepper motor for the stroke, several reasons, the main one being that I wanted a mechanical stroke adjustment with variable speed. My chuck is 12 inch, so on the wiper crank I have tapped several holes that I can put the arm bolt into.e.g. if I want to grind a 6 inch part I could either use the 3 or 4 inch hole, which would double the stroke. On top of that the 12 volt motor has a Pulse Width Modulated controller board. This gives infinite control without any loss of power ( buy cheap on ebay ). This gives me total control of the grind with a fixed stroke at an adjustable speed. I do not think that it would have been easy to do that with a stepper motor. By the way this was my first time of using a stepper motor, quite a learning curve, althought my work was also electronic repairs. Drop me an email if you want a more detailed description with pictures. Thanks again. Regards.