Small Cnc Machine

Aaron Bowser's CNC Machine - Hacked Gadgets - DIY Tech Blog


Small Cnc Machine News:

Vertical Machining Center offers simultaneous axis movements.

With 200 x 440 x 305 mm working volume, 5-axis BT30 Speedio M140X1 produces parts up to 40 kg. System features 10,000 rpm/18.9 kW/40 Nm spindle, +5/-95° trunnion (A-axis) swivel, and 50 m/min rapids in all linear axes. Machine offers 0.9 sec tool change from 22-position magazine mounted around column, giving 1.4 sec chip-to-chip time. With static tool in spindle, parts on table can be turned at …

Original Source: http://news.thomasnet.com/fullstory/Vertical-Machining-Center-offers-simultaneous-axis-movements-20016006

Mini CNC Milling Machine – EzineArticles

Mini CNC milling machines are pretty close to their grown up counterparts except on a much smaller level. The mini milling machines are pretty much …

Original Source: http://ezinearticles.com/?Mini-CNC-Milling-Machine&id=3056960

Tormach Personal CNC (PCNC) | Small CNC Machines

Tormach provides personal CNC (PCNC) and small CNC machines, CNC tooling and lathes, CNC accessories, CNC software, upgrades, and more.

Original Source: http://www.tormach.com/

Vertical Machining Center offers simultaneous axis movements.

With 200 x 440 x 305 mm working volume, 5-axis BT30 Speedio M140X1 produces parts up to 40 kg. System features 10,000 rpm/18.9 kW/40 Nm spindle, +5/-95° trunnion (A-axis) swivel, and 50 m/min rapids in all linear axes. Machine offers 0.9 sec tool change from 22-position magazine mounted around column, giving 1.4 sec chip-to-chip time. With static tool in spindle, parts on table can be turned at …

Original Source: http://news.thomasnet.com/fullstory/Vertical-Machining-Center-offers-simultaneous-axis-movements-20016006

Mini Cnc Machine, Mini Cnc Machine Products, Mini Cnc Machine …

Mini Cnc Machine, You Can Buy Various High Quality Mini Cnc Machine Products from Global Mini Cnc Machine Suppliers and Mini Cnc Machine Manufacturers at Alibaba.com

Original Source: http://www.alibaba.com/showroom/mini-cnc-machine.html


Zen Toolworks CNC Carving Machine Kit cutting a small (25x 25 mm) PCB

Didn't completely cut through the copper layer, need to lower the z origin a little bit in Mach 3. PCB g-code was created using EAGLE with PCB-GCODE plug in.


Q&A:

Ditish asked How is cnc machines related to robotics?

Is cnc machines a type of robot or is cnc machine an example of it? i don’t know how they are related so please help me.

And got the following answer:

i dont know what you would say a robot was but i would say a machine that had at least a capability to learn,maybe very simply but at least come up with something of its own,might only be a small sub routine but more than what it was programmed to do.cnc machines do what they are told exactly which is required so i would say they where automatoms not robots

abdul rehman s asked what kind of cnc engraving machine do i need?

we are manufacturer & exporter of sports garments. We often need rubber logos for our products and for this we first need a brass die. There are lot of cnc machine on various websites but i still don’t know what kind of cnc machine do i need? people here in my city are using different cnc machines (which they don’t expose to anyone) to make dies. It does not have to be a big cnc machine but must be precise enough to make best dies. So i want you guys to suggest me a suitable cnc machine for this task. Thanks

And got the following answer:

What you want is a small CNC milling machine or router.

Smaller machines will be in the $5000 to $8000 range and larger machines will go from $14000 to $25000.

From my perspective, for your application I would go with a milling machine because it is more suitable to this type of work. ( In a milling machine the table moves under the cutter. In a router the cutter moves over the table) A milling machine table will be better for holding the flat brass to create your molds.

The links below show 2 suitable small machines in the mid $6000 price range.

In addition to a CNC milling machine you will also need software to generate the designs and tool paths. For your purposes you can probably get away with 2D design. You will want your machining software to be capable of generating tool paths from grayscale scans. DeskProto and Delcam ArtCAM are 2 suitable products. ArtCAM combines design and toolpath generation. DeskProto only does tool paths. I have used both and while DeskProto is much less expensive support is non existant, you get great support from Delcam.

John F asked What is the correct length to width ratio of an airplane propeller?

For a school project I will be designing a 2 blade airplane prop to be cut out on a cnc machine. If thinking about a prop as a 2 dimensional object from above, what would be the correct length to width ration of the prop. By length I mean from tip to tip and by width i mean from one edge of the prop to the other edge. Thanks so much. It would really assist me.

And got the following answer:

There is no “correct” length to width ratio. A propeller is just a spinning “wing” that creates “lift” to propel an aircraft forward.
A propeller is designed to suit the aircraft type, speed, engine power, and propeller RPM.
What is important, is the section of the blade, and its pitch. Numerous high- speed sections might be used, the selected width (chord) is going to depend on the requirements above.
Propellers for commercial aircraft, and many light aircraft, are variable pitch. They might take off at a fairly fine pitch, but in the air, the blades are twisted in the hub to provide more efficient use of the engine power.
Only “simple” light aircraft, and models, use fixed- pitch propellers.
The pitch is the distance the propeller would theoretically move forward in 1 revolution, if it were a perfect item, which they are not. Aircraft drag, etc., produces slip, that limits the forward motion.
Note the pitch or “twist” of a propeller is greatest near the hub, and lessens towards the tips. This is because each particular point along a propeller’s blade length rotates in a larger or smaller circle, so the points nearer the hub have greater twist so the pitch angle (i.e. the theoretical distance it moves forward) becomes constant along the blade.
For wing (propeller) sections, google NACA wing sections. You will get the idea.

w w asked How to find a customer for a CNC machine shop?

I own a small, but advanced CNC machine shop. I am doing good, but I would like to expand. My ideal cutomer would be a small or medium sized aerospace or machinebuilding company. Do I call purchasing there and ask for an appointment? What is a proper way here?

And got the following answer:

Of course you call them. It is legal. Some gurus advice to call directly the management as they can make the ‘yes’ decision right away; some other advice to start from shop floor workers and to make your way up to management, but all means are good. There is no proper way of making an appointment. Just be sure that you are ready with your presentation – technology that you use, methods of work, successful projects, etc – and keep calling.
Good Luck

John F asked What is the correct length to width ratio of an airplane propeller?

For a school project I will be designing a 2 blade airplane prop to be cut out on a cnc machine. If thinking about a prop as a 2 dimensional object from above, what would be the correct length to width ration of the prop. By length I mean from tip to tip and by width i mean from one edge of the prop to the other edge. Thanks so much. It would really assist me.

And got the following answer:

There is no “correct” length to width ratio. A propeller is just a spinning “wing” that creates “lift” to propel an aircraft forward.
A propeller is designed to suit the aircraft type, speed, engine power, and propeller RPM.
What is important, is the section of the blade, and its pitch. Numerous high- speed sections might be used, the selected width (chord) is going to depend on the requirements above.
Propellers for commercial aircraft, and many light aircraft, are variable pitch. They might take off at a fairly fine pitch, but in the air, the blades are twisted in the hub to provide more efficient use of the engine power.
Only “simple” light aircraft, and models, use fixed- pitch propellers.
The pitch is the distance the propeller would theoretically move forward in 1 revolution, if it were a perfect item, which they are not. Aircraft drag, etc., produces slip, that limits the forward motion.
Note the pitch or “twist” of a propeller is greatest near the hub, and lessens towards the tips. This is because each particular point along a propeller’s blade length rotates in a larger or smaller circle, so the points nearer the hub have greater twist so the pitch angle (i.e. the theoretical distance it moves forward) becomes constant along the blade.
For wing (propeller) sections, google NACA wing sections. You will get the idea.

Tadpole asked How hard would it be to build an AK from sheet metal, and steel blocks?

I don’t mean buying an 80% receiver. I mean if i had a punch press, a milling machine, a heat treat oven, a lathe, etc., (perhaps even a small CNC machine) could i build an AK from nothing but sheet metal and steel blocks, with no parts kit? I know they do this in Pakistan, but i’ve also seen videos where these homemade AKs blow up in people’s faces. Do you think with the proper knowledge and equipment, building a “stable” AK could be relatively easy to achieve?

And got the following answer:

You’d wanna make damn sure you knew what you were doing, and I’d use one of those remote triggers for the first test fire.

Ditish asked How is cnc machines related to robotics?

Is cnc machines a type of robot or is cnc machine an example of it? i don’t know how they are related so please help me.

And got the following answer:

i dont know what you would say a robot was but i would say a machine that had at least a capability to learn,maybe very simply but at least come up with something of its own,might only be a small sub routine but more than what it was programmed to do.cnc machines do what they are told exactly which is required so i would say they where automatoms not robots