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Mini Metal Lathe

Fixtures / Machine tools
Added 16 comments

To process small metal workpieces, the Master made a mini-lathe. Let's see how it works.

The machine works and, although there is a slight beating, it justifies itself. A plus is the adjustment of the shaft rotation speed. The master uses Bosch Rexroth parts in his machine. Unfortunately, the wizard does not provide links to details.

Tools and materials:
- Aluminum base;
T-nuts;
-Brackets;
- End caps;
-Front and rear headstock;
-Bearings;
-Coupling;
-12 V engine from trimmer;
Screwdriver speed controller;
-Vise;
-Drilling machine;
-Shaft for tailstock;
-Copper tube;
- hairpin;
-Nuts;
-Bolts;
-Washers;
-Hard strip;
-Welding machine;
-Paint;
- brush;
-Insulation tape;
-Wire;
-Tester;
-Battery;
-Lerka;
-Power Supply;





Step one: tailstock
Drills holes in bearings along the diameter of the bearings. Sets bearings, tightens screw cuts. He puts a copper pipe on the quill. Installs the pinol in the inner ring of the bearing.











Step Two: Headstock
The coupling has a threaded hole. Screws the coupling part onto the stud. Tightens the locknut. Installs the stud in the bearing bore.





Step Three: Machine Assembly
Installs the engine on the bed. A metal plate is wound on the motor shaft. Installs the second part of the coupling on the shaft. Sets the coupling cross. Installs the front and rear headstock.


















Step Four: Spindle
The master made the spindle out of nuts, washers and hexagon bolts. A nut is welded in the center of the washer. With this nut, the spindle will be attached to the headstock shaft. Three more nuts are welded around the edges. Paints the spindle. Screws hex bolts into the holder nuts.









Step Five: Speed ​​Controller
The trimmer motor rotates at high speeds, so it is necessary to adjust the speed. The master makes a device for controlling the rotation of the engine speed from the details of a screwdriver.Parses the screwdriver and removes the speed control and the power button. The button with the regulator is mounted on an aluminum profile. For the regulator to work, it is necessary to connect a 3.6 V battery to it in reverse polarity. Two studs are installed on the profile. A plate supported by a button is mounted on the top of the studs. When tightening the nut, the plate presses the button and the speed increases.


























Step Six: Power Supply
For engine operation, a 12V 10A power supply is required. By connecting two power supplies, the master received the specified parameters.


Connects the power supply to the engine and checks the operation.




Seventh step: tool holder
Now you need to make a tool holder.


Tightens the nuts in a vise and drills a hole. Then puts the nuts on the bolts.





Welds, as in the photo.









Adds a metal plate.




Makes sleds.

































It makes a clamp from an aluminum plate.


Four washers are welded to attach the tool holder to the bed.



Paints the tool holder.


Step Eight: Improvements
Putting a plate under the engine, adjusted its height. Replaced the metal plate on the shaft with a copper sleeve.






In the future, to eliminate the runout of the shaft, the master added one more bearing to the front headstock.
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16 comments
0
Reply To quote A complaint
I do not take the name from the ceiling. It is clear that the machine is not industrial and differs from industrial. But if I start to call things differently, a bunch of smart people will come running and will again criticize what I did not correctly call. Therefore, you open the drawing of the machine in the internet, and as indicated there, you write, because if you write as a translator, no one will understand anything at all.


And I managed to choose just such a picture!)))) ... In fact, about the "spindle-cartridge" and "pin-center" can be understood from it in two ways ...
If it is drawn for those who KNOW the names and arrangement of the main units, then it may have the right to life, showing only HOW these devices are arranged in a machine.)))
Because, speaking "colloquial words" (hereinafter))) the spindle is the end working shaft with devices for fixing the part or work element ... (In the machine and drill, this is a shaft with a chuck, in a grinder - with a thread , a washer and a nut, in a meat grinder - the end of the screw with a landing screw for knives.))))) ... "Knowing peteushnik", looking at the figure, will understand that they are not pointing to the cartridge itself, but to the entire drive shaft with it.) )))
You misunderstood, and in the article they called the spindle only the cartridge. It would be right if we didn’t “install the spindle on the shaft”, but “do the spindle by installing the cartridge on the shaft”.))))
About the same with the pinole ... The pinol, in general, is part of the mechanism, which, without rotating, can be fed forward along its axis. And already on it a rotating / non-rotating center (at the machine tool), or, again, a chuck (at this, or at the drilling machine) can be attached .. "As standard" a simple center is installed on it. And in the diagram you can show the pinol only in the advanced state, that's why they painted it like that for the "excellent pupils" who know for sure that the center is not hanging in the air !! Under it is a pinol !!! )))).
Although ... Most likely, just another picture "just to draw", because the support there is generally indicated somewhere "in the belly")))). (About the "tool holder" (I was thinking now) ... Maybe this is really the name of the part of the caliper into which the cutter is clamped directly. And at the same time, thanks to which it can be moved, it makes the caliper?) ... My knowledge is limited standard classes at school at labor lessons ... Maybe the late Nikolai Yakovlevich didn’t explain to me in such detail, maybe for almost forty years I forgot what ...))))
+1
Reply To quote A complaint
And where did you get such a picture with explanations? From the first year of vocational school I remember what is called. There are no 4 cam spindles, this thing is called a cartridge. But the pinol is not visible here, it signed a non-rotating center. Not a single machine has an insulating base; there is a bed that is attached to the floor on anchors and poured with concrete, or mounted on vibration mounts. All machines are grounded, so why isolate them? Well and so, on trifles, and all in one drawing. Thanks, laughed.
Author +2
Reply To quote A complaint
1) Actually, the author has machined chess on such a machine.
2) I do not take the name from the ceiling. It is clear that the machine is not industrial and differs from industrial. But if I start to call things differently, a bunch of smart people will come running and will again criticize what I did not correctly call. Therefore, you open the drawing of the machine in the internet, and as indicated there, you write, because if you write as a translator, no one will understand anything at all.
+1
Reply To quote A complaint
And on the topic of the article ... So I did not read it!)))

And now, with nothing to do, I read ...
And, you know ... I regretted getting involved in the debate without reading.))))
No ... I still think that someone might need a small stanchok ...
But both of them “messed up” - both the author of the machine tool, and, especially, the author of the article ....
Because the first one decided to regulate the revolutions of the engine, which has a lot of them, but there is almost no torque ... (And, having reduced the revolutions, he will lose it FOREVER)))) .. And the execution of everything else .. Oh-oh-oh-oh-oh
Ie ... Another "cool homemade" for U-tube ... It is such a machine that no one will need ...

The second one (the author of the article) also writes for some reason about something in which he has "not a single foot in the tooth" ... Yes, and apparently, he pulled it from a "non-Russian" resource ... Because he cannot even "screw it in place" terms that appeared in the translator ...))))
Because I didn’t notice that the author used a countersink as a rotating center. But in the description he had some kind of "Shaft for the tailstock" ... Moreover, the author of the article in the description called him "pinol" ... While I didn’t find any pins in this machine !!! ! (Author !!! Please correct me if I am not careful ... I reviewed twice ... WHERE IS PINOLE ????
And why is this his pearl: "the spindle will be attached to the shaft of the headstock." ? ))))) Spindle - this is the shaft with the cartridge ...
Shaft to shaft You are going to mount! smiles
There is no support, but there is some kind of beast called "tool holder" ...)))
...
Okay ... Enough on this ... And then I’m already tired of pounding on the typewriter and staring at the image index ...))))
(Sorry .. I understand computers at the same level as the author - in machines)))))
Guest Alexander 0
Reply To quote A complaint
This is not a machine, this is a model of a machine, with the same success it could be assembled from plastic or wood, it would be even easier) If you hold the blades in the cartridge, then there will be a working fan.
Author 0
Reply To quote A complaint
You are a strange person. All people have different incomes and hobbies. One speaker from orange, another machine. Perhaps the machine is not perfect, but I think the master has the ability to make it even better. And this machine is needed not for industry, but for the manufacture of small parts for the author’s homemade products. I don’t know how ferrous metal is, and aluminum on it can definitely be punched. And again, in the absence of finance, both the headstock and the bed can be made independently, the author did not bother and bought it. The grandmother costs $ 28.95, the bed is made of aluminum profile, its price is not very large.
+1
Reply To quote A complaint
I also can’t understand how you can “minus” without explaining ... I agree that I don’t give a damn about these “pluses” and “minuses”, but I’m used to considering any action as an expression of thought! And if you put “plus”, or “minus” - be kind, continue with the phrase “because ...”. Otherwise, it just makes no sense.

And on the topic of the article ... So I did not read it!))). It really hurts a lot of information and pictures for "reading just like that," but in a practical sense I don’t care about such a machine .. Therefore, I will not evaluate its quality ...
But, nevertheless, I still think that such a device could be very necessary for someone, and therefore the costs may well be justified.
Why are you pushing costs so precisely?))). I gave an example - suddenly someone makes conceptual models of some mechanisms developed by him? .. He will really need such a mini machine ... Well, if he spends even a thousand dollars on it !! ! .. It all will pay off with interest ...
... I do not think that someone will collect this "just like that" ... "so that it is on the farm" ...)))). A device with such narrow functionality is made specifically for its intended use ...
+2
Reply To quote A complaint
Quote: MNS1961
You can put me an infinite number of minuses

Do you care about these disadvantages? Hammer on them xaxa
If someone is dissatisfied with your or someone’s response to homemade work, let him explain the reason for the discontent, if he wishes. And putting a minus is like writing anonymous letters secret
+1
Reply To quote A complaint
Quote: Nruter
This is not a machine, this is just a concept

I agree with Nruter, just add that this is not a machine - this is a complete "concept". You look at the costs. How much is such a bed, front and rear headstock, etc.
The author suggested only home-made mini-caliper, which does not withstand any criticism. This is not a support, but some strange cluster of bolts and nuts.
You can put me an infinite number of minuses without explaining what I’m wrong about, but I think that this is not a machine, but a complete “CONCEPT”.
Author +2
Reply To quote A complaint
I don’t understand by what principle they put a minus. And for home-made work and against incognito, it minuses everyone in a row-))) It is necessary to ask the administrator what would he calculate by IP-calculus)))
Author +1
Reply To quote A complaint
The author took a button and a regulator from a burnt screwdriver. Engine from another device. I bought something not without it, I made something myself. The regulator suits him, well, the other will do it differently. About the holder. The support is attached to the grooves on the frame of the machine. On a support a mobile platform. An elongated nut is visible on the right side, turning it you move the platform with the cutter.
0
Reply To quote A complaint
Normal homemade. The author dismantled the screwdriver, re-arranged the parts, added a little of his own and got a toy with a speed regulator. Many pictures on the manufacture of the tool holder. And where is he on the machine itself, how is it fastened and how is the cutter brought to the workpiece?
And the design of the speed controller is somewhat reminiscent of a physics lesson in the 6th grade of the times of the USSR.
This is not a machine, this is just a concept.
+4
Reply To quote A complaint
I do not agree with you, Michael ...
For me personally, for example, this homemade work is also not needed ... And I will never spend so much effort and energy on creating a "toy machine" .... BUT ...
... And if someone is designing and creating miniature mechanisms and "fine precision mechanics"?
To create conceptual models he just needs such a machine !!! This is only later, when (if) his concept goes into series, small parts will be manufactured on industrial equipment with CNC .... In the meantime, the first working model is assembled "on the knee in the kitchen", it will take just that ... And there are no industrial analogues ...

P.S. It reminded a long-standing dispute with Delausam about the usefulness of a decorative vegetable garden ... Well, he does not understand how it is possible to grow cucumbers in order to "play"))). From his point of view, they are all raised just for the sake of the harvest! ... To save and not to buy them ...

Or a second example: On another resource, I talked about angle grinders. So there was a man who claimed that he didn’t consider a “small grinder” to be an instrument at all !!! Indeed, for many years he has been working (at work) the 230th !!! ... And therefore, small - pampering for children !!! ... I tried to ask how he cuts, for example, the 230th Bulgarian complex figures steel? ... But he replied pardonlessly, "Why the hell should I cut them?" )))) ... And I had nothing to answer ... And the truth !!! ... why the heck? )))
... But then another user connected and explained directly to him that he uses a motor cutter at work !!! And therefore, he considers Chmoshniki and weaklings all those with a disk diameter less than 350! ))))) ...
The whole joke is that the first one after that began to argue on the topic "motor cutter - not a Bulgarian!" ... Therefore, you can not compare them ...)))))
+2
Reply To quote A complaint
This is not nonsense, but a real homemade! And the mental costs in it are just more interesting, for me at least.
Author +4
Reply To quote A complaint
Why nonsense? The author is fond of making miniature things. And he uses the machine for turning parts of his homemade products.
"If you don’t like home-made, it doesn’t mean that other people don’t need it."
0
Reply To quote A complaint
Complete nonsense, with such physical and economic costs (I’m not talking about mental).

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