Machine maintenance and monitoring tips

Machine maintenance is critical to metalcutting. Because of their manual nature, certain tasks can be hard and time-consuming, taking up valuable spindle time. These efforts are necessary, however, to ensure consistent performance of machinery and tooling.

Left to work for extended periods without attention, spindles and other machine components may pass on problems to parts and cutting tools. I often see how frustratingly difficult these issues are to diagnose.

The best plan is to schedule routine maintenance and testing, especially when applying premium tools. What many people first think is tool trouble frequently can be resolved with cleaning, more vigilant monitoring of machinery or both. The following suggestions are for maintenance and monitoring.

Dyna Test is a precision test bar for static accuracy of a machine spindle. Using Dyna Test bars for regular inspection helps identify potential problems. Image courtesy of BIG KAISER Precision Tooling

Verify Taper Accuracy
The spindle is a key link inthe machining chain. Whether it’s an errant chip, fluid buildup or heating wear, part quality and machining efficiency can be hurt. Visual checks are not enough, and neither is an occasional wipe-down. This is where a taper gauge comes in handy. By applying a blue layout dye, inserting it into the spindle and removing it, inconsistencies that cause poor contact of the spindle taper with toolholders are revealed. This information enables targeted cleaning and repair.