Toolholding

If you’re lucky, the veterans in your shop will take a rookie aside and pass on their hard-won knowledge of good machining practices. Most of this information is priceless. But some of it … not so much. For example, there are a lot of myths about balancing out there that, if not refuted, can cost your operation a lot of lost time and money. In this article, Haimer USA LLC addresses these misperceptions and offers a more factual view of best practices for balancing toolholder assemblies.

Premier Industries’ pressure regulators are subjected to tough duty in the oil & gas, aerospace and welding industries, but their precision performance is also critical, as regulator outlet pressure determines downstream pressure. A HORN modular toolholding system allow the company to reduce cycle times by 65 percent and cost per part by 79 percent—with better finish, flatness and tool life.

For many machinists, the conversation begins, “If I could have this size tool with this attachment on it, we'd be able to …” With the variety of machine taper types, sizes, differences in the flanges, draw-in thread sizes, and pull studs, finding the ideal toolholder for the job can be a difficult task.

Seco Tools looks at passive and dynamic vibration control in a recent technical article on the company's web site. In metalcutting, vibration is generated by the changing forces that occur when making chips. The intermittent forces are apparent in the interrupted cutting process of milling and also appear in turning operations when the toolholder bar is periodically loaded and unloaded as chips form and break. A passive/dynamic approach to vibration control for tools involves application of a tuned mass damper concept.