Reduction of Noise of Spindle Units of Metal Cutting Machines by Coating Application on the Surface Bearing Structures and Kinematic Links

Abstract

The results of experimental studies of the damping capacity of metal and polymer coatings are presented formed by methods of gas-flame spraying, deformation cladding with a flexible tool and galvanic deposition. The logarithmic damping decrement was chosen as a criterion for evaluating the damping capacity. It is established that polymer coatings based on PET-grade polyethylene terephthalate (TS 6-06-S199-86), formed by gas-flame spraying, and nickel-based metal coatings, obtained by galvanic deposition, contribute to an increase of damping capacity in 35...45 %. Thin coatings based on copper and babbitt, with a layer thickness of 4 μm, formed by deformation cladding with a flexible tool, slightly reduce the damping capacity, however, when applied to the working tooth profile of gears, an integrated spindle node of the console milling machine OSh F-32 helps reducing its noise by 1...5 decibels.

Keywords

• gas-flame spraying
• galvanic deposition
• deformation cladding
• flexible tool
• rotating metal brush
• coating
• noise
• vibration