6. Large format CNC (computer controlled Machining)¶
about CNC¶
what is CNC ?
Computer Numerical Control (CNC) Milling and Machining, is a subtractive machining process that uses computer-controlled tools that utilize bits such as ball end mills, flat end mills and single flutes to remove material from a solid block of material.
This process is suitable for creating products from a wide range of materials including non-ferrous metals, plastic, glass, wood, and various types of foam.
Types of CNC Machines
The most common types of CNC machines are those that use cutting tools to remove excess material from the workpiece. While there are CNC machines that employ water jet cutting and electrical discharge machining (EDM) operations, this guide will focus on the five most common categories in the following list, divided into two basic classifications:
3-axis and multi-axis machines.
3 Axis CNC Machines (CNC Milling Machines - CNC Turning Machines (Lathes))
Multi-Axis CNC Machines
Indexed 5-axis CNC Milling Machines
Continuous 5-axis CNC Milling Machines Mill-Turning CNC Centers
Benefits of CNC Machining
CNC machining offers several competitive advantages, including:
Quick order lead times High precision Highly customizable Creates products with exceptional physical properties and performance thresholds
CNC Machining Applications
steel
Food and beverage
Plastics
Paper
Textile
Recycling
Oil and gas
Fluid power
Construction
CNC Machined Parts at Technox
Boring
Milling
Drilling
Tapping
Threading
Counterboring
Countersinking
Knurling
type of Milling
General Safety and Precautions
there is a 3 emergency bottoms to stop the machine from working
group assignment¶
Test runout, alignment, speeds, feeds, and toolpaths for your machine
For the group assignment, we were shown a previous sample done by the previous batch of students, and we discussed the fitting joints process.
testing previous sample of CNC project file that show the changing in F in/min , S RPM and deferent fitting size .
You can check Yousif’s website to view the group assignment.
induvial assignment¶
starting with searching about Coffee tables standard sizes and the design and determinate the joint size and thickness
design a 3D form in Sketchup to visualize the final result
design the cutting testing the part in AutoCAD
Editing phace
editing for the speed and feed of the pit tool
and the ( Tabs ) is to make sure that the object not moving after it cutting its connect the sheet with the object and choosing the number of the tabs and it show the spaces of the tabs .
choosing the cutting depth more then the sheet to ensure the cuttings the sheet is (12mm and we choose 13mm)
toolpath operation ( profile toolpath pathed) just to cut its profiles
start cuttings
the testing cuttings
the fitting
editing the joint because some joint is nit connected and it will be not cited
and make all the inside edges normal fill to make it easy fot the pits
the edges after editing them by the tool
fitting every thing in one sheet
cuttings preview
hero shot¶
