Second video I have seen this week where repositioning the chuck by rotating it gives you better runout. A very good lesson to know! Wonderful video, thank you.
I enjoyed the video and thanks for showing the process and problems. It may be that your collet precision was compromised by assuming the nose of the collet holder was machined to the same accuracy as the ground inner collet taper. Clamping to the OD of the nose and machining from that as a reference, likely created a bit of error. It may have been better to use a precision mandrel in a large ER collet, and machined everything using the collet-held mandrel as the reference. Also, I think you really want that tight press fit on the back plate for repeatability without having to repeatedly drag out an indicator when you swap chucks. We learn by doing! Thanks again.
I would assume those collets to be made in China with at least 90% certainty. I don't mean that they would be bad but the markings and the box are 1:1 with some chinese stuff I have. I would get Fahrion or Rego-Fix if I want better quality, then aliexpress for the cheap stuff
You could've used the key slot to keep the chuck in place during tightening, with an ER40 hook wrench (or some mm size that fits). These have to be pretty tight.
Hi. I dont know if anyone already mentioned it, but you can purchase new 100mm chuck with this method of mounting through the center of it. It is called 'k01-100b Sanou'. There is also 80mm version, 'K01-80b Sanou'. I dont know if the size of the mounting holes are equivalent thought.
That was impressive. Well done. Especially for a small lathe. That may be something that I can adapt to one of my Atlas/Craftsman small lathes. Thank you.
Alter??? Mach Kühl/Schmiermittel dran... Da Verreckt alsbald des Werkzeug, und die Teile werden Trocken auch nicht besser. Zumindest Mindermengenschmierung sollte es schon sein, brauchst ja keine Flutkühlung
i have just been able to get the collets for my chuck which i have had for more than 30 years. The machine is a Colchester Master, and the chuck is sized, sitting too long. Your video has been most useful. It is the front locking plate that is sized, but we will free it and see what happens Thank you for your information on this video
Can anyone explain the maths behind the .05mm per division on the wheel, it’s a 2mm pitch lead screw, 80 divisions equals .05mm according to the video??
In these videos we never seem to get a clear look at your milling set up, it seems to be the Proxxon drill press arrangement, this seems to work quite well but I can only guess which parts you use & purchasing that set up would cost over £500 which places in the cost area of buying one of the far eastern 'mini mills' instead. Any information would be gratefully received. Thank you.
A very useful little gizmo, the comments show how this could be improved in detail, thanks for publishing the video which provides inspiration for those of us who would like something similar 😊
Nice looking unit, but your video is lacking important details of the spindle design. For instance: arrangement of the bearing shoulders, provision for preload, use of bearing retainer compound (or not), and so on. Drawings or sketches would help to illuminate your approach. Lacking all this I'm sorry to say: Rather disappointing!
Very interesting system for suck. a chuck. given we started with the subject being the ER collet chuck. I got 100 of a tenth run out on my ER 40 collet chuck. Now what interests me is this given the system to set the collet tension requires a pre-set position & the collet lowed move forward on to that 'pre-set position. i would suggest this ponticular chuck could be adapted to accept the ER collets using a redesigned nut to pre-set the ER collet. given the foreword motion of the lever tightens the central sleeve as it pushes its centre forward in fact by making a new centre to replace the one you have I suggest even an ER 40 collet could be maid work in that collet chuck the only verity would be a range of central sleeves & nuts to set the individual collet's with the nuts I do not suppose you would be doing that in this case. it would make the ER collet an attractive possibility, & remove you former gripe in regard to the operation & function on removal. preps you should consider & Make a film on the adapting of such a Chuck to ues ER collet that will be 32 in your case you have pecked my interest i have been thinking of making a quick change collet chuck i will see if you tack the bat & work with the one you have in your position if it work it may inspire me to by one. & invest in one two, & the collet's look hand to. Les England .
It's not a Saccardo, but it works, it can be improved by using angular contact bearings and a labyrinth seal, but still a usefull tool for a mill or a lathe
Jesus answered and said to him, “Are you the teacher of Israel, and do not know these things? 11 Most assuredly, I say to you, We speak what We know and testify what We have seen, and you do not receive Our witness. 12 If I have told you earthly things and you do not believe, how will you believe if I tell you heavenly things? 13 No one has ascended to heaven but He who came down from heaven, that is, the Son of Man who is in heaven. 14 And as Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up, 15 that whoever believes in Him should not perish but have eternal life. 16 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. 17 For God did not send His Son into the world to condemn the world, but that the world through Him might be saved.18 “He who believes in Him is not condemned; but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God (YHVH, El Shaddai, Adonai, God of Jacob, Isaac, and Abraham). John 3:10-18
Turning your work piece INTO your indicator is not good practice. It should be rotated away. The slightest deficit is going to register against the stylus and be amplified. The other issue may be those jaws may be bucking or rising up when torque is applied. Checking tongue and groove tolerance might help. A lot of this stuff that is mass produced is at the most tolerable and left to the customer to remedy. You could also use a steel ring and expand the jaws against that and then grind the jaws while open instead of using a cutting tool. (to much tool spring or crosslide gib flex defeating the purpose)
This is awesome, i started design work on something very similar a few years ago. I still have the fbx files. Main difference was I planned on casting it in zamak, and using annular contact bearings. proposed power TP power bldc motor, using a timing belt setup.
@@WeCanDoThatBetter I don't recall another video about a DIY small milling spindle, so... Also, I didn't know that Mini Lathes with a lead screw are available, which one do you have?
