MMS Blog

No doubt there is more productive CNC machining technology coming to market every day. But how can you get more productivity with the machining centers and turning centers you already own?

By updating your machining strategies.

You may not feel that you need to be able to talk to your machine tools. But voice-activated human-machine interfaces (HMIs) are coming to the machine tool industry, and the advantages probably are going to be greater than you think. Makino already has the technology in beta testing, and the application in standard products is just around the corner.

For now, it is a hands-free way to execute a number of control and information display functions—one operator to one machine—with commands like, “run part-program 208 . . . stop coolant . . . change tool to T-15,” and so on. It can also serve up critical job documentation such as setup sheets.

Why are cutting tools coated? Most would say it is to protect the tool. That answer is true as far as it goes, but the function of the coating is more varied and more specific than that. In this video, I get to talk about coatings with Julius Schoop, Ph.D., machining expert with the Cincinnati-based manufacturing consulting firm TechSolve. (Actually, he is now formerly with TechSolve—he accepted a university professor position while this video was in production.)

In particular, Dr. Schoop and I focus on the difference between physical vapor deposition (PVD) and chemical vapor deposition (CVD) coatings. PVD is a line-of-sight process allowing for a thinner coating and therefore a sharper edge. CVD produces a thicker coating more effective as a thermal barrier.

Creep-feed grinding is a form of precision grinding that has proven to be a great development in modern grinding technology. As compared to conventional surface grinding, it provides excellent potential to increase productivity and improve dimensional accuracy. Creep-feed grinding is characterized by heavy stock removal, frequently greater than 0.030 inch or 2 mm of stock removal per pass. The purpose of this article is to demonstrate the calculation of wheel life in creep-feed grinding. Calculating wheel life is essential for forecasting wheel usage and the abrasive costs associated with a grinding process. In order to calculate the wheel life, it is essential to know which dressing methodology is being used. There are two types of dressing methods that can be used in a creep-feed grinding process:

1. Non-continuous dressing, in which an overhead or table-mounted diamond dresser is used to plunge or traverse-dress the form into the wheel intermittently. The dress amount is programmed in inches or millimeters.

The dielectric fluid, or coolant, used in the wire electrical discharge machining (EDM) process, is deionized water. It serves several purposes:

When a machine is commissioned, distilled or deionized water with low conductivity is used first. Subsequently, tap water can be used if first passed through a deionizing resin bottle to filter out any contaminants and neutralize particles with an electrical charge. The water then circulates through a 3- or 5-micron paper filter to remove any remaining particles. Most machines are equipped with 5-micron filters.

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