CNC Machining Blog - Tips and Tricks for Machinists

On a regular basis I am asked to explain something pertaining to live-tool machining on a lathe, or "mill-turn," as it is commonly referred to in the industry. Even people with a CNC turning background are sometimes a little confused, especially in the areas of tooling and when the use of an additional Y-axis is necessary.

In this article, I will shine some light on the basics of live-tool machining and the application of the optional Y-axis.

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.

I recently received a request from a reader to talk about what is under the sheet metal on the Hurco machines, and to discuss the components that make them so rock solid. Having been a fan of Hurco machines for quite some time now, I am happy to oblige this request.

It is possible to drill very deep holes, even small diameter holes, without the need for pecking cycles and in half the cycle time thanks to some really cool science that goes way over my head. Although this technology doesn’t apply solely to hole drilling, it seems to be the area with the biggest impact.

Just like any other form of technology within our industry, 5-axis manufacturing has its very own vocabulary and list of technical buzz words. Although many of the features described below can be viewed as common, some are only found on the more advanced machine controls. For anyone looking into 5-axis machining, understanding these buzz words can be a huge benefit - and just might keep them from making an uneducated decision that they might live to regret later on.

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.

If you asked 10 different 5-axis programmers to program the same single part, you would most likely get 10 different machining strategies. Depending on experience, machine configuration, CAM software, tooling, workholding, and a myriad of other criteria, everyone sees the path they need to travel just a little bit differently. But they all lead to the same place: a successfully completed part. This article will be part one in a multi-part series about 5-axis programming.