CNC Machining Blog - Tips and Tricks for Machinists

As machinists, we are all aware of the standard tools of our trade. However, there are other non-standard tools available that not everyone is aware of and could be very helpful in our day-to-day life in the job shop. Just like any other industry, if there is a time consuming and mundane procedure that must be completed, you can bet that somewhere there is someone who has already invented a tool or device that would make that task easier.

Here is a list of helpful products for machinists that addresses workholding, fixture building, part and tool setup, coolant nozzles and more:

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.

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.

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.

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. 

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.