Making a 127 tooth Change Gear for the Victor Lathe Part 2
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- เผยแพร่เมื่อ 5 ม.ค. 2025
- In this video I cut the teeth for the 127 tooth gear and slot the Keyway to finish out this project. Listen out for one of those horrible sounds we hate to hear that almost put an end to this project.
I just came across your channel. Am 70 yrs old and am supposedly retired but neighbours regularly challenge me to make/repair things I have never done. I also have a Victor lathe, but it is copy made in Taiwan. On the side of it, it has tables for cutting metric and imperial threads but many of the necessary gears were missing. Am a self taught machinist and using the manual dividing head the first time demanded a lot of attention. But the 70, 90 and 100 tooth gears for metric and imperial threads turned out fine - already had a 50 & 127 tooth gears. Now can cut whatever threads I need to. My lathe looks a bit bigger than yours. Has a hardened and ground bed with 15HP 3 phase motor and 660mm x 2500mm capacity. Lathe went underwater in SW Sydney with a local creek backing up at Picton (NSW) a few years ago. Later was lucky enough to have lathe given to me. About $2500 later and much work and all back in fully operational condition - bed still in excellent condition. Also have a Bridgeport copy mill with R8 taper and a universal hydraulically controlled Pacific brand mill with NT40 taper - both manual. If you are reasonably close would like to drop in and see how you made the slotting attachment. Regards. Bob. PS. Also a light vehicle mechanic, mower mechanic as well as do welding and construction - all self taught. Hate painting - rattle can primer if you are lucky. Have 16m x 8m shed with 2 post hoist.
G'Day Bob, thanks for looking in and commenting. The Victor is a good lathe and they are all made in Taiwan unlike the China Mainland stuff. Sounds like your well setup for retirement and enjoying the shop time. I'm hoping for retirement at the end of next year but I'll see how things pan out. I'm a bit out of the way from you, I'm down the south coast of Victoria. You can check out -
th-cam.com/video/LYIdi7ruRps/w-d-xo.html
I also did a series on a Lathe mounted powered slotter.
Cam
That gear looks great. The missing small portion will not affect it enough to matter, it's just one of those things that will annoy you. We all have those things we remember in our projects because we're our own worst critics, lol!
Hey Cam! Let me add to the support group. My name is Dan and I muffed up during gear indexing ….more than once and will again. Very nice setup on the indexer. My belt indexer setup works but I need to lock it in-between cuts. That looks like a nice smooth mesh which has to be satisfying.
Good news is I can print gears now for light duty. Also sacrificing a plastic gear to qualify the indexer is much more satisfying than a freshly turned pristine gear blank…LOL.
That slotter is still one of the coolest gadgets to have about your shop. Takes up way less space than my little shaper and just as hypnotic to watch. LOL.
All the best
Dan
Thanks Dan, a 3D priter will be my next big purchase when I can save up the money. You are right with disposable plastic parts, just make up a new one when it wears out.
Cam
@@camatbattler2233 I started with a big Ender 5 plus 3d printer. Mmmm, likely operator error, but it demanded a massive amount of fiddling with mixed results (much filament died during the making of well not much - LOL). I bought a Prusa Mini and it is more of turn it on and go - much more refined with great support.
Hi Cam, the gear cutter held up well, still sharp to the end.
Plenty of tooth contact for the working load of the damaged teeth and yes I have done it too by not retracting far enough.
After cutting a number of teeth the mind wanders and mistakes are made, especially when using a standard indexing head.
I use motor cycle chain lube on my change gears, very sticky and no fling off.
Great video Cam, it's easily done with so many teeth to cut. No worries, it's way strong enough.
Great idea Willem, my change gears ring a bit when perfectly meshed. I will try the old chain lube as they are fully enclosed. Not sure it's a good idea if swarf can get on them. I had thought of sticking a disc of bitumen sound deadening to the big ones but I reckon chain lube will stop them ringing. Nice one👍
Thanks Willem, it will be fine for the load and application. I use a WD40 non fling grease (in a spray can) on the gears which sounds similar to the chain grease.
Cam
Gday Cam, you have done a great job making these gears and I believe you did the right thing showing the “lapse of concentration”, there’s so many channels out there that never make a mistake and we all know that bullshit, we’re only human, of only one person takes note of this then it’s worth every bit of effort, I like to show my screw ups so others don’t do the same, the slotting attachment works a treat, you could have also done the keyway on the lathe with the other slotting attachment you made as well, the overhead bridge crane is an amazing setup, I’ve watched your video for way back hoping one day I can have something similar in the workshop, I’d love to have a talk to you about that one day, fantastic job mate, Cheers
G'Day Matty, I do have some very rough drawings of the Crane and the Swing assembly that allows the crane to move without binding up on the carriages.
Cam
I knew what you had done straight away ! Nothing like filming & indexing at the same time , very difficult to stay focused . Turned out great . Cheers .
Thanks Max, yep filming does add another dimension to working in the shop but it can be a real pain at times when you are trying to show something and then "Bang".
Cam
That slotting head is brilliant! I've got the horizontal attachment so I'm thinking that's going straight to the project list!
G'Day Mark, the slotting head project came about because of two things. First off I didn't have the space to mount a slotting attachment to the rear tongue of the ram and secondly those Slotting Attachments are just as expensive as the Milling Machine if you can get one in reasonable condition. I did a breakdown of the Slotting Attachment, check it out at -
th-cam.com/video/LYIdi7ruRps/w-d-xo.html
Cam
@@camatbattler2233 Thanks Cam. I have looked at the Taiwanese copies of the Bridgeport slotter at Hare and Forbes and you are correct. They cost as much as my whole mill. I have a giant Pacific slotting head but it is powered by the horizontal shaft and would need extensive modification to fit my mill. I am wondering if I can just cannibalise the dovetail slide and make something like yours.
Regards,
Mark
@@Preso58 Nothing wrong in giving it a go Mark. If its something you can't practically use in its current arrangement turn it into something that can be used. Although a Slotter is something you wouldn't use every day they are a handy piece of kit that can make a job that much easier.
Cam
Nice to see you back in action with various projects. Hope all is well down the track from your ‘man op’, and that we are now seeing us get on top of the virus. Tasmania has some good attributes, being a small island made it easy to close the borders, although we have had a few antisocial types ignore the rules and put us at risk. S.A looks to be in good shape, now it is the elements coming we have to adapt to, hopefully, others will follow your ‘big battery’ concept as we head further into renewable means of producing energy. Kind Regards from Tasmania, stay safe.👍🔭🛠
G'Day Shevill, yep just got my latest numbers today and all still good. Always a stressful for me everytime I get results so now its time to calm things a bit. I'm glad we are finally opening up here in Victoria and we can get back into some normality.
Cam
@@camatbattler2233 Hi Cam, good to hear the numbers are still good. For some reason I thought you were in SA where the big battery is. Hopefully other states will get with the plan and take the next step into new technologies. Since I wrote my comments my medical issues have taken a rapid turn-I have been struggling with a degenerative spine for many years, with nerve impingement at lower back levels. Over the years my opiate pain meds have been on the increase with diminishing returns. Saw the neurosurgeon last week and we knew the time had arrived to take a step into the unknown. I go into hospital on the 18th for him to attempt to make some space for the big exiting sciatic nerves on the left at L4/5 and L5/S1 to try and nibble away some of the bone that is trapping the nerve roots. Outcome is unpredictable, which is a worry but no other options. Tricky stuff on a guy my age with reduced bone strength and density-got to be careful to not cause the structure to weaken more than necessary. 84 on Jan 1st and still many constructive interests besides astrophotography and climate change research at the Tas Uni as an Honorary Academic-keeps the mind active. Always interested in your projects but not always make comments, watch all your videos with a keen interest and learn something each time. Take care and stay safe. Best from Tasmania.
G’day Cam. I feel your pain, I did the same when cutting my 50 tooth, toothed belt pulley, didn’t run the cutter far enough past the pulley only to crash into the next tooth path, ouch, she’ll be right. The slotter works great.
Cheers
Peter
Thanks Pete we have all done it in the past.
Cam
I cut a 95 tooth 16DP gear for someone else this weekend. I have CNC so loss of concentration is not an issue regarding motions being in the right sequence but I did have to keep watching it because my setup involved two issues. The first is that in order to support the gear behind the cut I had to run the spindle in reverse and there was was a chance that the arbor nuts would come loose and so the cutter could drop slightly before I realised. The other was that in order to keep the cutter rpm acceptably slow I was running my 3 phase plus VFD setup at a low Hz setting so there was a risk of the spindle stalling. Not good with CNC as everything else would keep going. I have made a 127 DP16 gear for myself in the past but since it is only going to be lightly used I made it from aluminium plate.
G'Day Martin, I reckon I'm cheating using the Electronic Divider but CNC is really cheating. I do have a small mill ready to convert to CNC and the Lathe I have is about 95% there, just need to find time to finish them off.
Cam
@@camatbattler2233 Cheating who or what? CNC is an alternative way of working but do you think you are cheating because you use electricity instead of muscle power? A blacksmith from 500 years ago would think you are using magic. You still need skills to use CNC, only people who have not spent time with CNC would think otherwise.
@@martinconnelly1473 No offence meant Martin, it was only tongue in check. Before I started in Oil and Gas 7 years ago I ran my own business primarily doing special machine design using Inventor but I also did alot of programming in HyperMill for Mazak 4 axis machining centers for a local CNC machining company so am very comfortable in using and working with CNC. As I mentioned I do have a CNC Lathe and the beginnings of a CNC Mill. If you have a look back at some of my older video's you will see modeling, coding and 3 Axis CNC machining on the router I designed built for Pattern Making back in 2001. (Back then I used "DanCad", very rudimentary but all that was available at the time for the home workshop at a reasonable cost). A lot of the patterns and Core Boxes I did where quite intricate and I could not imagine doing them the traditional way however you need to have the hands on skill to produce a pattern that will work. I like the idea of starting the run before I go to bed and waking up in the morning with a completed pattern ready to mold and cast, only CNC can give you that turnaround.
Cam
@@camatbattler2233 Ha, the second video that came up on my TH-cam home page this morning was Victor Lathe Change Gear Manufacture from 2 weeks ago by none other than your self. Very similar setup to how I did mine but I had to have the cutter on the far side of the gear and run the spindle in reverse due to the size of the gear blank. I also set up a couple of step blocks clamped down against the blank to give support against the cutter forces and to stop ringing
Even wit a little bozo, it is indeed a success.
Impressive stuff as always Cam.
Good set up and work Cam. Pity about the two marked teeth, but not the end of the world. These things easily happen and YT just increases the odds. What make of involute cutter did you use ? Cheers Rob
G'Day Rob, 1.75 was an odd module but I found them on AliExpress -
www.aliexpress.com/item/32700577270.html?spm=a2g0s.9042311.0.0.6a434c4dtQM9SS
I couldn't believe the price at $89.00 delivered. They show no signs of wear and are still very sharp so I can't complain about the quality..
Cam
@@camatbattler2233 Hi Cam, I've only ever used Chinese ones and they worked fine on cast iron, brass and aluminium. I haven't tried them on steel, but don't see any reason why they wouldn't work well and stay sharp. The reason I asked was because I saw a video recently of some guy bad mouthing similar ones for no reason, just big noting himself I guess and wondered if you went Chinese with yours. Obviously they worked damn well. Cheers Rob
Hi Cam, greetings from Canada! I have that exact same lathe, that I overhauled completely. Rescraped the ways, fresh bearings and seals. I'm missing some of the change gears for metric threads. What module and pressure angle did you cut them to? Seems like Module 1.75 and PA of 20 degrees, am I correct?
Spot on, module 1.75 @ 20 Degree Pressure Angle.
Cam
Hi Cam, could you please tell me what cutter you are using for this gear? Trying to make a replacement for a Maximat Super 11. Cheers, Ellie
The cutters where an odd module at 1.75. I bought the set of 8 through Aliexpress.
Cam
@@camatbattler2233 yes I have had trouble sourcing them and correctly identifying the module also took longer than expected. Thanks so much for your help there is not many people left with the knowledge to ask about these things. Cheers Cam
good job
Great result! I know there is a distortion of the depth of field with a video camera, but I cringed when you reached behind the cutter doing your spring passes. I sure looked like your shirt sleeve cuff was getting dangerously close to the spinning cutter. Apologies if the comment is out of line but 40 years as safety officer/director (without a fatality or serious accident) does that to a person.
G'Day WRG, yep could see how it looked but I was well away from the cutter when locking the table up. I've seen to many accidents to not check that I'm not in the line of fire. I supervise in a High Risk facility and am pedantic about my crews safety in all aspects of our works.
Cam