It was Interesting what you were saying about the VSD, limiting the power to your lathe. I use a similar setup on my manual lathe but it's mechanical not electronic. I use a soft starter, 3 contact starter (Star / Delta ) which is both good and bad. Good for ease of setup and maintenance but Bad if you have a high load motors like a big air compressor. I was thinking that if use a larger capacity VSD that would eliminate the overload problem that you are currently dealing with, maybe worth some thought ??? Good to see some more videos coming from you once again look forward to the next one. Regards Peter.
I struggle with engineers and their tolerances at least once a week! Mainly hole sizes. Try explaining that a .500" pin will not fit into a .500" hole......
Sounds like you have to deal with these so called desktop engineers who haven't done any real work. Unfortunately I've also seen them too many times. I had 10+ years of machining experience before getting my mechanical engineering degree.
Austriaball I should have said it won't fit without a hammer lol. You could press it in with force but if you want to be able to take it back out the hole needs to be about .0002" to .0005" over the pins size
Do you know yet what that small panel (the one with all of the symbols on ) is for on the front face of the large electrical control box on the stanko ?
Ahh, so good to see manual machining for a change! But your remark on tolerances triggered an automatic reflex. When I studied engineering in college, we were taught the concept of "default tolerance" and this means + or - 1 unit on the last decimal place shown on the drawing. E.g. 6.00 mm is somewhere between 5.99 and 6.01. to be in tolerance. But 6.000 mm would be between 6.001 and 5.999 mm. When CAD came along this standard was followed. But not all designers are aware of this default and often specify an overall tolerance . Or worse, let the CAD program decide what the tolerance is.. This is easy to do in CAD, but maybe not optimal, because because all parts may not need the same tolerance. I do not know whether the same convention applies in Europe but I will bet it does.
That makes a lot of sense! However I have not heard of anyone using that system here. Would not be suprised if it was in use though! I mostly work with ISO 2768 general tolerances, which change with the size range of the dimension.
That is fine as long as ISO allows for the cases where no tolerance is expressed in the drawing, i.e. 6.00 mm without an explicit tolerance. In days of old, drawings were made by hand, and it would be a waste of draftsman's time and add to the cost of the project. CAD has made that immaterial but I think it is still a good idea. Since I am retired, I never pay any attention to ISO standards:)
Here in Italy I've never seen this type of default tolerancing, but I know it exists. I think it's an american thing and I hope to never see it again! Too easy to misuse, expecially with CAD as you mentioned. A trailing zero is a waste of ink and makes the drawing less clear. We use the ISO general tolerances that are made just for that in a much cleaner and smarter way.
If you watch closely, I explain why I do it the way I did. Not sure if my explanation is better than yours, but I always make sure there is no burrs or dirt in the center hole when i put the center on, no matter what.
Pretty cool stuff.
Nice to see a little manual work, especially on the little lathe. Thanks.
Great work man , ENJOYED !!
It was Interesting what you were saying about the VSD, limiting the power to your lathe.
I use a similar setup on my manual lathe but it's mechanical not electronic.
I use a soft starter, 3 contact starter (Star / Delta ) which is both good and bad.
Good for ease of setup and maintenance but Bad if you have a high load motors like a big air compressor.
I was thinking that if use a larger capacity VSD that would eliminate the overload problem that you are currently dealing with, maybe worth some thought ???
Good to see some more videos coming from you once again look forward to the next one.
Regards Peter.
I struggle with engineers and their tolerances at least once a week! Mainly hole sizes. Try explaining that a .500" pin will not fit into a .500" hole......
Sounds like you have to deal with these so called desktop engineers who haven't done any real work. Unfortunately I've also seen them too many times. I had 10+ years of machining experience before getting my mechanical engineering degree.
Why won't it fit?
Austriaball I should have said it won't fit without a hammer lol. You could press it in with force but if you want to be able to take it back out the hole needs to be about .0002" to .0005" over the pins size
mikey_d I'm sure every machinist that makes something you planned up thanks you.
Ну, наконец👍
Do you know yet what that small panel (the one with all of the symbols on ) is for on the front face of the large electrical control box on the stanko ?
You mean the manual mill? It's the controls for the primitive automated cycle thing. Never tried it.
My 6t83w has the same controls , but i cant find any instruction manuals for the machine anywhere . cheers .
Ive been waiting for a new video
Ahh, so good to see manual machining for a change! But your remark on tolerances triggered an automatic reflex. When I studied engineering in college, we were taught the concept of "default tolerance" and this means + or - 1 unit on the last decimal place shown on the drawing. E.g. 6.00 mm is somewhere between 5.99 and 6.01. to be in tolerance. But 6.000 mm would be between 6.001 and 5.999 mm. When CAD came along this standard was followed. But not all designers are aware of this default and often specify an overall tolerance . Or worse, let the CAD program decide what the tolerance is.. This is easy to do in CAD, but maybe not optimal, because because all parts may not need the same tolerance. I do not know whether the same convention applies in Europe but I will bet it does.
That makes a lot of sense! However I have not heard of anyone using that system here. Would not be suprised if it was in use though! I mostly work with ISO 2768 general tolerances, which change with the size range of the dimension.
That is fine as long as ISO allows for the cases where no tolerance is expressed in the drawing, i.e. 6.00 mm without an explicit tolerance. In days of old, drawings were made by hand, and it would be a waste of draftsman's time and add to the cost of the project. CAD has made that immaterial but I think it is still a good idea. Since I am retired, I never pay any attention to ISO standards:)
Here in Italy I've never seen this type of default tolerancing, but I know it exists. I think it's an american thing and I hope to never see it again! Too easy to misuse, expecially with CAD as you mentioned. A trailing zero is a waste of ink and makes the drawing less clear. We use the ISO general tolerances that are made just for that in a much cleaner and smarter way.
i would think the order should be face first than center drill
the facing after the drilling will leave a burr in the the center.........
If you watch closely, I explain why I do it the way I did. Not sure if my explanation is better than yours, but I always make sure there is no burrs or dirt in the center hole when i put the center on, no matter what.
watched it again, makes sense
I prefer the cnc videos