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Questions tagged [cnc]

Computer Numeric Control (CNC) is the automation of machine tools that are operated by precisely programmed commands encoded on a storage medium (computer command module, usually located on the device) as opposed to controlled manually by hand wheels or levers, or mechanically automated by cams alone. Most NC today is computer (or computerized) numerical control (CNC), in which computers play an integral part of the control.

Computer Numeric Control (CNC) is the automation of machine tools that are operated by precisely programmed commands encoded on a storage medium (computer command module, usually located on the device) as opposed to controlled manually by hand wheels or levers, or mechanically automated by cams alone. Most NC today is computer (or computerized) numerical control (CNC), in which computers play an integral part of the control.

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Accounting for blank registration within CAD design

How do CAD designers account for the fact that a blank may have to be flipped to a different side in order to allow the piece to be completely milled through a CNC system? For an example, let's use this car made from a rectangular block of pine: It…
user16
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High spindle speed, low tool pressure

I'm building a small hobby CNC machine out of aluminium with the end goal of milling plastic, aluminium and possibly some harder stuff like steel (although if you saw the machine you'd laugh me out of the room). The machine isn't as rigid as I…
Bojangles
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CNC milling of large cutouts

I have a part made from 5mm alloy plate and I need to cut a large cutout in the middle of said part: As seen above I intend to use a small cutter to cut through the stock (not necessarily plunging as shown here) and cut around the inner diameter of…
HJCee
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How do I manufacture a fillet?

What are the most popular and the most efficient ways to machine a fillet on an external edge of an object? If I were to use a CNC mill, what tools can I use for it, and how would the method change with the radius of the fillet? I could imagine that…
Slovakov
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Standard parameters for machining aluminium?

Sorry for the weird question but I was wondering about the standard machining parameters for Aluminium (if there is even a standard). Particularly the values for a CNC process (preferably in SI) for a rough volume milling and one for a finishing…
Trung Nguyen
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Is conversion from EMC (*.ngc) to heidenhain (*.h) CNC code possible?

I have some gcode created with dmap2gcode. This and Meshcam are the only software I could find that could would take a large image and create the necessary gcode. Now I would like to try cutting this on a different machine. This machine however is…
Jesse RJ
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Asymmetrical collet nut snaps end mills

Could you clarify my suspicions. My spindle (HY HUANYANG, model: GDZ-80-2.2A) has come with a collet nut which has bizarre asymmetrical form of the supporting ring inside it (the ring for collet groove). Since I have obscure issue why all my end…
Vitalii Sadovshikov
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Actual Chip Thickness Calculation for CNC Machine Endmills

Have a look at this image: this image is from: https://www.guhring.com/Tech/endmillcalc I would like to know how the formula for the "Actual Chip Thickness" is done In this case, it is 0.104 Using speeds and feeds for this…
DarkPh03n1X
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Did I buy the wrong SBR rails? They don't seem to attach or align

I have bought some SBR12 rails and bearing blocks in an attempt to make a fancy flatenning jig for my router. I haven't been able to see 100% everything that other people have done on the YouTubes due to camera angles etc, but I went ahead and…
physicsboy
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Is it possible to have a reference pulse interpolator for a CNC machine with dc drive?

Is it possible to have a reference pulse interpolator for a CNC machine with a dc drive? it should work with alternating current drive but I am not sure about the direct current drive. please help me getting its answer. thanks
Satya
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Why are entry-level CNC mills cheaper than entry-level manual mini mills?

Having used some big, old, manual Bridgeports in school, I was looking into getting a small mill (manual or CNC) for hobbyist home use on metal and wood. I was surprised to see many CNC milling kits on Amazon for quite cheap ($200-600 USD) whereas…
rfii
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Low cost molds. Can such molds be produced?

I recently found the following link https://anglingai.com/224b-4-4-blood-line-swim-bait-mold/. There you will see that they sale hundreds of different aluminum molds related to fishing. These molds are really inexpensive (from 50 up to 200 USD). How…
Efthymios Kalyviotis
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Solidworks hole table export data format

I'm trying to help a student with a project. The task is to generate CNC G-Code from a Solidworks hole table export (CSV) using VBA. The problem is the export format is going to be a difficult to parse. Samples include the following: TAG,X LOC,Y…
Transistor
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Lightweight substitutes for machined aluminum parts

I have machined parts that are made of aluminum and anodized black. The reason that I chose aluminum is because: It can easily be machined and is low cost and is common, so easy to buy It is light weight compared to steel It can take heat It is…
Allen
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Can a 3018 or 1610 CNC router cut aluminum (foil)?

I'm wondering if anyone has any experience cutting aluminum foil on a very cheap CNC or laser cutter. I have a lot of 3d printers but haven't yet purchased a CNC router. I am talking about aluminum foil about as thick as Reynold's wrap (brand named…
nick carraway
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