- 28
- 169 274
Mechanntraining
France
Приєднався 2 гру 2020
Doing an engineering apprenticeship? Starting out on a hobby in metal or have an interest in mechanical electrical work, there may be something here for you.
Videos specifically designed around level 2 apprenticeships in engineering from a time served and qualified lecturer.
More videos for more advance apprentices, basic control systems, motor testing and general bits and bobs.
If you have ideas you'd like to see and I can make them in my little French cave let me know.
Videos specifically designed around level 2 apprenticeships in engineering from a time served and qualified lecturer.
More videos for more advance apprentices, basic control systems, motor testing and general bits and bobs.
If you have ideas you'd like to see and I can make them in my little French cave let me know.
Turning between centers, the why.
Seems strange to make apprentice engineers take their fancy 3 jaw chucks off and use old style drive dog, the old methods are sometimes the best. Here is a quick demo showing how using centers and a drive dog can allow you to maintain concentricity in a part even if you have to take it out of the lathe.
Переглядів: 15 956
Відео
WTF are collets good for???
Переглядів 2392 роки тому
Just dipping your toe into the world of lathes and now we want you to use collets, only just got used to a 3 jaw. Collets offer repeatability, take it out and put it back without the worry that you will lose accuracy, here is a quick demo that show the advantage to collets. Rinse and repeat.
Making Joints in larger cables
Переглядів 3092 роки тому
T and Married joints in multi strand conductors. Easy task to tick off the list but worth knowing, solder makes for reliable conductive repairs and modifications in low vibration conditions. We also look at the use of insulated connectors and how they should look, when I manage to stay in focus.
Installing thread repair inserts
Переглядів 6893 роки тому
How to use thread repair inserts to repair damaged threads. A really useful skill when you are maintaining machinery or reconditioning. Easy task but has its pitfalls.
Copper pipe soldering
Переглядів 2483 роки тому
Introduction to soldering pipe, standard joints, no fancy pre soldered Yorkshire fittings. This is a good skill to master and easy to practice with a few bits from the local DIY store.
Milling am I conventional or climbing?
Переглядів 4923 роки тому
Visualising how you cutter is moving is key to knowing what type of milling you are doing are doing, getting it wrong can be catastrophic! Here's a quick rundown of what to look for.
What is backlash?
Переглядів 9173 роки тому
Quick video demonstrating the effect of backlash on a lathe. You can see the same effect on a mill or any other machine tool using threads. Made to help apprentices visualize backlash when they're away from the workshop. Bit rushed and yeah, I know the lathe is a mess. Brass gets everywhere.
Clocking or dialling in a vice to the milling machine.
Переглядів 1,3 тис.3 роки тому
For 1st year apprentices about to start their milling assignment a run down of the clocking in method. There are other ways but I find halving the error always keeps you on the right track. Get this as close as you can, errors here are repeated throughout the job and could mean you have to start again!
Dividing head basics
Переглядів 26 тис.3 роки тому
Basic introduction to the use of a dividing head and indexing plates. Making round stuff square and more! The dividing head seems complicated at first sight but with practice and a little Google help, it a massively useful accessory to add to the mill.
Inside the 4 stroke
Переглядів 233 роки тому
What happens inside your engine? A chance to see the amazing interplay of piston and valves in a modern 3 cylinder, 4 stroke engine. Filmed using an amazing apprentice machined and built cut away engine.
Parallelism and turning on the lathe
Переглядів 2,3 тис.3 роки тому
Knowing how to check your turned components are parallel whilst performing turning operations is an important skill for apprentices. Here we see some ideas for measuring and gauging parallelism that you can put into practice on your work.
Concentricity
Переглядів 1,3 тис.3 роки тому
Apprentices new to the lathe, some background and help on the subject of keeping things concentric.
Apprentice questions: Measurement
Переглядів 2373 роки тому
Some of your questions have been on some measurement methods, so here are some ideas. This isn't an in-depth method, more to give you pointers and help to answer those tricky knowledge questions.
Using an edge finder (wiggler)
Переглядів 5393 роки тому
Edge finders are a useful tool for apprentices learning the milling machine. There are many ways to use these tools, these are my opinions and some of the reasons. Safety first, Here I am touching a spinning tool in the mill, only do so with advice from your lecturer. Safety guards removed for filming!
Making Ethernet connections with RJ-45
Переглядів 5713 роки тому
Modern industrial control relies on fast accurate communication between controllers and machinery. Both standard and industrial ethernet connections are used throughout manufacturing plants. Understanding the basics of cable connections is a vital apprentice skill that takes some practice to do easily.
Sheet metal hinge forming AKA rolled edge
Переглядів 4,2 тис.3 роки тому
Sheet metal hinge forming AKA rolled edge
Files and saws for apprentice bench fitting tasks
Переглядів 2783 роки тому
Files and saws for apprentice bench fitting tasks
단식분할법 영상으로 올려 주세요
Nice explanation
Thanks for sharing this with us
I had never thought of the advantage of being able to remove part and then replace.... and have no runout.....thanks so much.....Paul in Florida, USA
Thank you for the clear explanation.
Just found your channel and subscribed. Very nice work.
Exactly what I needed. Thanks.
Thanks a lot ❤❤❤
Nice and simple illustration❤
God bless you!
Nice, I used to work with a metal lathe that got custom built into a wood lathe and used to do my bed legs like this. Now I'm a metal machinist and didn't even think of doing this with metal. Cheers, thanks for the video and reminding me of this technique
Timeless. I suppose this isn't too different from how the first lathes functioned - just a belt spinning the work directly between two dead centers to guarantee concentricity - and from that, an entire host of machine tool parts and the birth of the industrial revolution.
Hence, this timeless quote: 'The Lathe is the only machine capable of reproducing itself". I don't know who that was but it's been kicking around machine shops my entire life and I'm 78. Wakodahatchee Chris
i love the four jaw chuck because it allows me to do facing cuts and take stuff out and put it back in again perfectly concentric. i do punch and die grinding as a hobby and i have to machine the Ends of punches a lot
Well explained.thanks
You can make your own index plates.
8/3 give us 2.66😢 not 1.66! Thus 40/24 give us 5/3 that means 1.66....
You dont have translate i take you negative
I had no idea what this technique was, but had been told I needed to use it for a particular job. Thanks to you I now know what it is, how to do it and why I should do it. Very concise and very helpful - Cheers!
I bet this technique is older than your lathe. Great demonstration. Thank you.
worth using a more accurate dial gauge
Can you remove the dog when you would put it on the mill for example and the put the dog back on it, put it back in the lathe and it would still be concentric?
Thats the advantage! the concentricity is provided by the centres at both ends, to dog just transmits the drive, so you can take it on and off as much as you need to.
I think in the older days when guys just had center lathes only one guy did roughing out in a 3 jaw or 4 jaw and then it was past on to a guy on another lathe guy who finished between centers and that was how production was done years ago.
Is there a mistake with the illustration at 4:23? Shouldn't the last test be at the bottom far right terminal?
If the motor is 415V, I understand each phase is only 230V rms to neutral/earth. So a 500VDC IR test to chassis makes sense. But why wouldn't you test between phases at 1kV? 415Vrms is 587V peak, which is admittedly only the peak value, but you're not checking that for the duration of the peak the insulation is not breaking down. So a 500VDC IR to chassis and then 1kVDC IR between phases would be correct?
In addition, one end may be machined to spec the part turned end for end, using copper sheet to prevent lathe dog damage to the part, then machine the other end exactly concentric to the beginning work. This process works great in a cylinder grinder as well. Best regards I would encourage the making of additional videos.
exactly the video i was looking for. much appreciated. became one of your sybscribers
the 24 teeth calculation is wrong it’s supposed to be 1 turn and 5 holes
thank you very much great video
I always thought they were called SECTOR ARMS.
I think it’s one of those “ where your from” things; boot, trunk, sidewalk, pavement etc. As long as you get the idea and know what they do, call them whatever you want!
Phenomenal video. Thank you.
Great video, kinda Forgot all that stuff
Useful
What about using a bush any tips for that
Hey can you teach me more about motors
Excellent video, complete and concise, Thank You.
Always wanted to try it out never had the chance at work but there's been a few instances where it would have saved a heap of time. The face that you can take the part out and turn it around is a big plus. Especially on pins that are one dimension all the way along. Had to take thou off the whole length of some 3" pins. Fiddling with ally in the jaws of the 4 jaw and only being able to grab the big heavy pin in the tips of the jaw caused a lot of teeth gritting 😂
I think the only issue with that tool is when the thread pitch and size doesn't match, you need to get another set lol!
One of the over looked problems i see when a engineer is fitting a motor back on a machine is not checking they have 3 phase through the circuit breaker switch, and contactor. Also checking the cable to the motor for damage.
You see. A engineer has zero experience actually fixing the things they create.
When fault finding in the field I never remove the links and always start with a insulation test. Most motors fail to earth. No need to carry out more tests. Start with the black lead on a earth point and the red lead on another earth point, this test your leads and earth point. then use use the red lead for the winding tests. When tests complete retest the red lead back to a earth point.
Quick question. Can a commercial installation electrician with 22 years experience move into industrial maintenance?
In waste management, no problems lol. I guess depends where you are and who is hiring, im teaching to apprentices in the UK so difficult to tell in the real world but your experience is a definite plus if you happy to retrain. I wish you luck in finding somewhere.
If you can install industrial or commercial electrics you can therefore maintain them.
Yes.
Very well explained, many thanks. Jim from AUSTRALIA.
Very interesting. Thanks, I have doors on a utility body to repair and this helps alot.
Nice 👍
Thank you
Clearly mathematics is not his key area of expertise. 40/24 does not equal 8/3. 40/24=5/3 = 1 and 2/3 tut tut
thanks sir
Very good
Great video! I watched it just out of curiosity
Great video!
Thanks for the video, that was clear, concise and helpful.
That's great