Tool Making

How Does a Turret Mill work?

  • Posted by Dienamics
  • March 30, 2018

At it’s most basic level, a milling machine is a cutter (called an endmill), that rotates on an axis (called a spindle) and can accurately move in a variety of ways, usually parallel and perpendicular to the work piece, as well vertically up and down. Turret Mills are unique in that it works vertically, however the endmill does not move during the cutting. The work bed moves the workpiece around the endmill.

Turret Mills usually have a moderately large range of motion and are quite versatile for small and medium sized jobs. We have two Turret Mills at Dienamics, and they are a critical part of our workflow. We also have a CNC machining centre.

Turret Mills have a level work bed, which can move left and right, forward and back and on certain machines up and down. These movements are carefully controlled by axels with precise threads cut along the length of them. Operators turn handles, which turn the axels, and the work bed moves a slight fraction. To see some of our work that has been made using a Turret Mill, take a look at our gallery.

The head of the Turret Mill (which is where the Endmill and spindle are located) does have a range of motion up and down, but this might be limited depending on the Turret Mill you’re using.

The spindle is powered by an electric motor and requires a fair amount of electricity. Another great advantage of a Turret Mill is that you can easily see what is going on with the machine. The operator has a great view of the workpiece and can easily back off the endmill and inspect the piece without any adjustment to the workpiece location on the work bed. Underneath the work bed, there is usually a material guard to catch most of swarf and chips from whatever you are milling.

Often operators will attach air nozzles or cutting fluid nozzles onto the work bed and direct them towards the spindle, to clear the part of swarf and lubricate the cutting edge which prevents damage to the workpiece and the mill itself.  There are other machining accessories and jigs, that you can attach to the Mill which will improve the machine’s performance in certain situations, but by and large, the output of the Turret Mill is determined by the skill of it’s operator.

If you need something milled quickly or if you’d just like to see if your idea is capable of being easily milled, please don’t hesitate to contact us.