Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [cnc]

Computer Numerical Control - the computer or digital control of ,typically, machine tools in a machine shop like lathes, mills, gougers and drill presses.

69 questions
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A CNC machine for PCB manufacturing

I'm looking for a CNC machine that can be used for different PCB manufacturing tasks such as: Drilling PCBs (using a rotating head) Pick and place (to assemble PCBs) Soldering This CNC does not have to be heavy-duty, I'm just looking for some…
Robin Rodricks
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Cut 3D chunk out of PCB?

I would like to cut a small square out of the middle of a large square PCB. The tricky thing is, I don't want to cut all the way through the board, just about half way. This would create a 1mm-deep square pocket in a 2mm pcb board. I could do this…
Hackstaar
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Which would better suited for a CNC drilling machine: gerber or gcode?

I am planning to develop a CNC drilling machine for a college project. The idea is to export the hole coordinates and drill size directly from a .brd file on Eagle, which will later be read by an MCU for processing. We're trying to define which…
kirbuchi
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Eagle V6 and CNC router

Any one used Eagle V6 and CNC router to produce prototype PCB boards. I have a high res CNC router HighZ1000-s/T which accepts G-code and HPGL. I am pretty sure that at the end of the day it will well work. Just looking for bit of advice from anyone…
Zulfqar Ali
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Eagle/Flatcam/LaserCNC: How to have "open pad" for futur drilling

I'm using Eagle, flatcam and a CNC laser machine. My problem is when I'm trying to export my board, all my pads are filled ! It means, when my board will be engraved (chimical method), I will not find any holes in the middle of the pad to use for…
maxic31
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EMC2, Arduino & stepper motors - Have I got this right?

I'm building a CNC mill based on Patrick Hood-Daniel's machines I'm also playing with Arduinos, and I'm beginning to wonder if I have this right: I have 5v 1A steppers. I'll be using EMC2 (Linux-based CNC) to run the whole thing and I had intended…
Leo
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L297 stepper motor driver inhibit issue

I've knocked together a L297/L298 stepper motor controller and have a problem with what seems to be half the output. On the final 4 output lines after the L298 and diodes, I have 2 bipolar LEDs to help visualise what is going on without requiring a…
OpticFroggy
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Unknown motor with continuity across all windings. Help identify star vs. delta

I'm converting an old milling machine (Optimum F40E) machine to be driven with a VFD, and I have it working. The head is a geared head, and with correct settings (torque compensation) in the VFD I can overcome the startup torque in the gear-train…
Lee Hambley
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Using Chinese 3018 CNC mill with KiCAD and FlatCAM for PCBs - "tool change"

OK here's the deal, KiCAD of course does a wonderful job with schematics, footprints, Gerber files, they even provide a pretty decent autorouter. Then you take the Gerbers and Excellons over into FlatCAM and they use those to make geometries and…
Jeffrey Lawton
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DIY electromagnetic shielding (CNC mill)

I'm building a DIY CNC router. I'm running at a low RPM and only planning on cutting soft materials (wood and under, maybe a PCB). I'm currently having problems with magnetic interference. When starting the spindle, hard end stops would trigger, and…
Daniël van den Berg
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Three-phase rotary converter wiring questions

I am installing a 30 HP three-phase rotary converter on a 200 amp service in my home shop. I intend to run a CNC milling machine with a 15 HP motor. I am using 2 AWG wiring in 1" shielded conduit from the panel to the converter, and from the…
Han Yolo
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Help on translating 5V rotary signal output to interface with lathe's cnc controller!

I have a hall sensor (OH137 - open collector) as an index signal on my lathe’s spindle. I have the sensor pulled high by a 1k resistor and can’t change it because they’re both glued in epoxy. This sensor works normally with 5V, from a 12V supply…
Rodrigo
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Stepper Motors getting very hot after use

I have a hobby CNC machine running with three cd drive stepper motors in it using a 2amp supply for all of them, it is run by Arduino uno and EasyDrivers. Suddenly I noticed them getting very hot, I am worried it might get damaged, please help I am…
Udit Sarkar
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Gear maker with 2 stepper motors

I would like to make a simple 2 axis CNC machine to create gears. One stepper motor could spin the gear, and the other could move a drill bit in a single axis. On ebay, I can find double h bridge controllers for less than $10. For example:…
captainandcoke
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Advice on precision CNC milling machines for PCB prototyping

I am an EE professor at an University and I was asked to provide a solution (machine) for PCB prototyping. Specs are milling down to about 8 mil (0.2032 mm) trace thickness, 8 mil trace clearance, 8 mil drilling/hole size, just 2 layers, material is…
tfm
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