7.4 Mechanical Processes | Milling
Milling is a cutting process that involves using a single or multi-point tool to shape a workpiece by performing a circular cutting motion with feed movement in one or more directions. The cutting edges are not constantly engaged.
The technique known as contour milling can be used to machine external and internal PCB contours as well as sub-panel contours.
Cavities, countersinks, and connector bevels can be produced by depth milling.
Piercing, countersinking, and beveling are carried out using special tools. Holes with a diameter of Ø 6.35 mm or more are usually milled.
Milling is often carried out using a stack (PCB panels arranged one above the other to create a package) while adhering to positional, form, and location tolerances.
Auxiliary materials, such as entry and backup materials, are used.
Using camera technology for alignment with specific reference elements enables the level of accuracy (offset) to be improved during milling.
The technique known as contour milling can be used to machine external and internal PCB contours as well as sub-panel contours.
Cavities, countersinks, and connector bevels can be produced by depth milling.
Piercing, countersinking, and beveling are carried out using special tools. Holes with a diameter of Ø 6.35 mm or more are usually milled.
Milling is often carried out using a stack (PCB panels arranged one above the other to create a package) while adhering to positional, form, and location tolerances.
Auxiliary materials, such as entry and backup materials, are used.
Using camera technology for alignment with specific reference elements enables the level of accuracy (offset) to be improved during milling.
Frequently asked questions
Are elongated plated through holes created during drilling by incorporating a large number of overlapping holes (nipples) OR simply by milling?
The choice of method depends on the diameter and length of the elongated hole. However, as a general rule, diameters larger than Ø 5 mm are milled.
Keywords
- Contour routing
- Inside radius
- Design to Cost
- Depaneling
- Tolerances