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.

Filter by
Sorted by
Tagged with
0 votes
1 answer
14 views

High RPM CVT for Spindle Motor

I have been messing about with a 20k RPM spindle motor and want to try to have some more low end torque. I was thinking about using a belt or chain CVT so I can smoothly change gear ratios but is ...
Phaselancer's user avatar
0 votes
0 answers
19 views

Issues communicating PoKeys57CNC and Mach4 running on Windows 11 Home PC in Custom Shell Kiosk Mode

Some background Information I am using a Windows 11 Home PC to control a plasma cutting machine. The windows 11 machine uses Mach4 as the interface for controlling the plasma cutter and a PoKeys57CNC ...
Mr.J 01's user avatar
0 votes
0 answers
21 views

What is the smallest standard CNC tool holder

I am looking at making a small CNC drilling machine for light duty PCB drilling. I would like to include a tool changer. I've been looking at tool changers and tool holders and they all seem massive ...
Ron's user avatar
  • 101
0 votes
0 answers
26 views

CNC a hemisphere in SolidWorks

Dear all, I am currently learning CNC Milling software. I have successfully be able to simulate the toolpath for milling a square block to a hemisphere. May I ask how to add another operation, that is ...
Maximus Su's user avatar
0 votes
0 answers
22 views

CNC Mill an Airfoil Shape in MasterCAM

I have this airfoil shape which I created using MasterCam. I used the milling function called MULTISURFACE. When I select the green highlighted spot above, it will throw me an error. Is there a way to ...
Maximus Su's user avatar
0 votes
2 answers
53 views

Is it acceptable to use a hand reamer on an X-Y CNC machined hole?

I would like to seat some bearings into a piece of aluminum, and I only have access to a small CNC machine. The CNC has ball screws and is calibrated to maybe 50um error in the actual travel on x and ...
user391339's user avatar
0 votes
0 answers
10 views

Tnc640 dnclib libraries

In order to obtain real-time data from the CNC machine, a C++ code was previously developed, and using it we were able to get real-time data from a 530 5-axis machine. 1HeidenhainDNC172 2RemoTools ...
Ahmed Can Unbay's user avatar
0 votes
1 answer
19 views

What's the best way to zero a mill using a hole on the SIDE of the part

Lets say I have a block of metal clamped in a vice on my mill, and that part has a hole in the face that's facing me (parallel to the Y axis). What's the best way to zero the X axis on that hole? The ...
Drew's user avatar
  • 1,902
1 vote
1 answer
49 views

'Know how' requirements for CNC / lathe manufacturing for open hardware projects [closed]

I've been asked to peer review a paper where the authors claim to be presenting an open source hardware item that is to be manufactured of aluminium using "CNC milling machines" or "...
WildCat's user avatar
  • 115
1 vote
1 answer
72 views

Cutting carbon fiber plate with a sub-mm end mill

I have a 2 mm thick high-quality carbon fiber composite sheet. I want to cut a shape in it with a 0.8 mm diamond flute end mill. I need a cut this narrow because of the shape's detail. The shape's ...
scriptfoo's user avatar
  • 127
0 votes
1 answer
42 views

Automatic letter connection for plasma cut parts with nested holes

Something I'm consistently running into as an issue is connecting letters so they don't fall out or leave a missing unconnected hole in a letter that is cut out of metal. Is there a way to ...
Loie Benedicte's user avatar
0 votes
0 answers
56 views

Stepcraft specific CNC post processors for solidworks cam?

I searched some post directories but I am unable to find any Stepcraft specific posts for Solidworks. I don't have the licenses or money for other products, and I want to be able to do everything in 1 ...
aPerson's user avatar
2 votes
1 answer
21 views

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 ...
Vitalii Sadovshikov's user avatar
0 votes
0 answers
33 views

Which CNC gantry support shape is more ridgid?

I'm in the process of designing a small CNC. There are two styles of side plates for supporting the gantry. The first one has an angled corner cut on the front, while the other has a backslash shape. ...
user148298's user avatar
1 vote
2 answers
59 views

Why continuum robots aren't common on CNC machining processes?

So, I was searching on google/youtube about minimally invasive procedures and its tools to reach deep and delicate spaces of the human body, and it came to my mind the possibility of using it for CNC ...
Fulano's user avatar
  • 169
0 votes
2 answers
330 views

Reasonble position tolerance for 1.5mm dowel pins?

I am quite new to CNC machining and want to design two parts which should be accurately aligned with each other. I searched online and many people suggest the use of two dowel pins to align the parts, ...
raisyn's user avatar
  • 101
0 votes
0 answers
107 views

I am getting error "G-code error: Bad character '\357' used" on my tormach 440 after I import gcode, why is this happening?

I am getting "10:39:49 | G-code error: Bad character '\357' used" in my class's Tormach 440 console when I import my code. Does anyone know any potential causes to this? Edit: I don't know ...
Saturn's user avatar
  • 1
0 votes
0 answers
99 views

Calculation of Cutting forces (tangential , feed and normal) in CNC Milling Process

I am doing my fyp project on 5 axis cnc milling machine.I need to calculate forces on each axis as mentioned in the below picture I first calculated spindle power from https://www.machiningdoctor.com/...
Hamza Zaheer's user avatar
0 votes
1 answer
67 views

What process is involved in freeform 3D tube bending?

I have seen 3D freeform tube bending in videos such as this, this, and this. I would like to ask what process is involved in such machines. I can see a swivel mechanism used for bending. What is it ...
CaTx's user avatar
  • 101
0 votes
0 answers
68 views

Gcode generator or post processor adding strange dimensions or offsets for CNC

I am using a modified Chinese 3040 5-axis CNC machine. I switched out the controller to a NVSUM USB controller and a TB6600 cloned stepper driver. They work well enough. I am generating my gcode ...
user70891's user avatar
0 votes
1 answer
319 views

How to interpret general tolerances (e.g., ISO 2768)

I am quite new to mechanical engineering, but currently working on a project which I eventually want to sent to a CNC service for machining. Many services I found can manufacture to, e.g., ISO 2768-m ...
raisyn's user avatar
  • 101
0 votes
0 answers
23 views

Handling bad g-code in typical CNC machines based on G02 example

I take the following example g-code https://howtomechatronics.com/tutorials/g-code-explained-list-of-most-important-g-code-commands/ ...
Fedor  Petrov's user avatar
0 votes
0 answers
57 views

Does there exist a type of metal serrated sheet to place between two mating surfaces?

I'm trying to design a bolted joint between 2 aluminum members that will not shift in sheer under vibration loads. The two straight members form a cross shape. Right now there are simply tight ...
Drew's user avatar
  • 1,902
0 votes
0 answers
32 views

Machining: Seeking Porting Tool for Milling Female 37deg Flare Ports

Been looking for a COTs carbide/ HSS cutting tool for milling standard 37 deg flare fluid ports, but am struggling to find anything applicable. Since these are common enough fluid fittings, I figure ...
Austin Prater's user avatar
0 votes
1 answer
20 views

Disk of solid wood debris on a 0.8 mm end-mill

The machine makes a cutout in a 6 mm-thick piece of hard maple using a 0.8 mm end-mill. The end-mill accumulates a quite solid disk of wood debris. It has the consistency of soap and looks like a fine ...
scriptfoo's user avatar
  • 127
2 votes
1 answer
165 views

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....
DarkPh03n1X's user avatar
0 votes
0 answers
49 views

Which method is suitable for manufacturing this small scale geometry?

I want to have a channel manufactured in the dimensions shown in the picture. Which method is suitable for it. I think CNC can not achieve to work in such small scale. That rectangular prisms with 1....
CaptainCombo's user avatar
0 votes
1 answer
74 views

Max length of 12mm OD steel rod for CNC axis [closed]

Standard rod used for CNC guides, outer diameter: 12mm. Material: Ck55 steel, hardened to 60 HRC (according to store) What would be the maximum length I can have before the rod starts to bend? The ...
Alex's user avatar
  • 103
0 votes
0 answers
55 views

Does this CNC machine exist?

About ten years ago I had an idea for a cnc machine that was meant to basically use multiple axis to airbrush finished milled or printed 3d objects. I still have my detail drawings i worked up for it. ...
Benjamin Barney's user avatar
-1 votes
1 answer
114 views

Is G-code used also in NC or just in CNC machines?

I am trying to really understand the difference between NC and CNC machines (not just to see the "old dark-green display" to know that it is an NC machine). On the web people are saying that ...
elano7's user avatar
  • 137
2 votes
0 answers
51 views

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 ...
physicsboy's user avatar
2 votes
0 answers
23 views

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 ...
Satya's user avatar
  • 412
1 vote
0 answers
284 views

Active noise canceling for CNC enclosure

this is my first post here! I wanted to share my ideas for this and get some input on them. My parents were kind enough to let me put a cnc machine in the loft. (shapeoko 3 xxl) In order to make them ...
Perch Perkins's user avatar
1 vote
2 answers
111 views

Professional threaded insert in plastic?

I'm getting some plastic parts (made with HDPE) CNC machined. A few of these parts require the addition of threaded inserts. I've printed the parts myself using a 3d printer and when I add the ...
Jason Easton's user avatar
0 votes
1 answer
46 views

Software correction of CAD or Gcode based on machine measurements

I own a CNC machine (Shapeoko 3 XXL) which I use to make projects that require good 90° angles, and I have been through several steps of improvement/calibration of the machine that are described in ...
adrienlucca.net's user avatar
1 vote
0 answers
105 views

Design a Jig and Fixture for 3-axis CNC Milling Machine

Newbie Here!!! This is my assignment task. I am required to design a Jig and Fixture for 3-axis CNC Milling Machine. The workpiece will be a simple aluminium block and it will be cut and shaped into a ...
JUZ Aviewer's user avatar
1 vote
0 answers
62 views

What is an "Optical Axis Rod"?

I'm in the process of designing a CNC/3d printer and I came across the term "Optical Axis rod" which seems to be the "standard" rod printers like Prusa use. But I can't find ...
Beacon of Wierd's user avatar
2 votes
2 answers
130 views

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 ...
rfii's user avatar
  • 123
0 votes
1 answer
102 views

How to calculate value of force required to move CNC rounter? [closed]

I want to design CNC rounter. I want to know how much force required to move router in to material. How to consider this. I guess there are many factor like Material Feed rate Depth of cut number of ...
M lab's user avatar
  • 113
1 vote
1 answer
57 views

Precision of a steeper motor and gears vs multiple motors

We are a student team trying to design a low cost CNC plasma cutting machine. The CNC will be a table with two rails and a bridge moving on them in which the head of the plasma torch will be. Now we ...
Alejandro Guzman's user avatar
1 vote
1 answer
146 views

CNC side linear rails

I've been wondering why most (hobby) CNC machines have two actuated linear rails like this: Besides the extra force for moving the spindle, is there a need for both rails to be actuated? Could the ...
John M.'s user avatar
  • 1,033
-3 votes
1 answer
56 views

Vertical cnc or skipper

We are going to be increasing our capacity in our component company next year and I am looking for a little advice. We are thinking about using our loader/unloader CNC for cutting part outlines only ...
NGrimberg's user avatar
2 votes
5 answers
149 views

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 ...
Efthymios Kalyviotis's user avatar
1 vote
5 answers
377 views

What is a purpose of learning G-code?

I might be wrong here. The solid modeling done in CAD like Catia, NX, Solidworks,etc can be taken as input in CNC and the desired shape and size of piece can be obtained.The CAD itself convert the ...
Auberron's user avatar
  • 133
2 votes
1 answer
232 views

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 ...
Transistor's user avatar
-1 votes
1 answer
296 views

Is it possible to grayscale a MPO file (3D camera) for a CNC carving

I had/have a 3D camera back in the day, and I gotten a few pictures. I kinda stopped using it since there wasn't anything I could do with the MPO files. However, the camera might gain a new life if I ...
Craig Bennett II's user avatar
0 votes
3 answers
61 views

Where to find springed pegs with screws for a CNC mill?

I need to hold small pieces of wood in place to be drilled by a mini computer-numerical control (CNC) mill. I have a book stand (no affiliation) that has two "springed pegs" fastened with screws: ...
miguelmorin's user avatar
2 votes
1 answer
401 views

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 ...
nick carraway's user avatar
1 vote
0 answers
44 views

Getting From 3D a model to CNC router

Apologies if this is not the correct SE for this sort of question. But, this is the only place I've seen an appreciable number of CAD questions. If this isn't appropriate for engineering.se, a pointer ...
3Dave's user avatar
  • 111
0 votes
0 answers
83 views

Permission Denied copying to (User Data) dir -Haas Next Gen Control

We recently purchased a new Lathe - Haas with Netshare, Next Gen Control. We are copying a file to the Haas Drive's (User Data) folder from a network PC. The problem we're seeing is random and ...
Joseph's user avatar
  • 123