CNC Machining Blog - Tips and Tricks for Machinists

As many of you are already aware, the Absolute Tool Length method of tool calibration has become the industry standard for measuring and recording the length of individual cutting tools on milling machines. This method of tool measurement not only produces numerical values that make sense to the operator, and can easily be verified with a pocket scale, but will also allow for tool lengths to be set offline using a presetter - and then the data can simply be entered into the tool setup for that particular tool…helping to reduce setup time at the machine.

I was asked by a reader to post an article about using subprograms. Although this is a pretty simple subject, it made me realize that not everyone is familiar with the use of subprograms and subroutines. I will also touch on the use of Hurco’s conversational NC Merge capability, which is powerfully simple and very useful!

We discussed the basics of mill-turn CNC technology in a past blog article. Today, I would like to build on that basic foundation.

Previously, I posted an article explaining the CNC motion control system and how it works. In that article, I tried to keep it very simple and break down a quite complex piece of technology into an easy-to-understand analogy. Today, I want to discuss it in a little more detail and point out some exciting advances in motion control technology.

A common misconception about the Hurco control is that it is a conversational control. This couldn’t be farther from the truth. Although Hurco invented conversational programming, and arguably has the most powerful conversationally capable platform on the market, I would not refer to the WinMax® control as a “conversational” one. I would instead call it “multi-lingual."

CAM systems have a diverse selection of toolpath strategies to choose from, and each has an appropriate place in 5-axis machining. But just like everything else in multi-axis programming, the programmer's experience and the actual machine configuration will play a big part in the selection of the suitable toolpath for a particular application.

Is it possible to drill a square hole? Many will snicker at this age-old question and say, “Of course you can’t drill a square hole!” Well, it turns out you most certainly can drill a square hole… and a rectangular hole, and a hexagon shaped hole, a hole with splines, double keyways — the list goes on and on!

I was recently asked to explain the motion control system used in CNC machine tools to someone in my family. Realizing that this individual didn’t have a background in manufacturing, and certainly had no experience with anything this complicated and technical, I had to relate my explanation to something common and simple: like driving a car.