Grinding Wheel
- PDF / 240,805 Bytes
- 5 Pages / 504.567 x 720 pts Page_size
- 74 Downloads / 226 Views
Grinding Wheel Jan C. Aurich and Benjamin Kirsch FBK – Institute for Manufacturing Technology and Production Systems, University of Kaiserslautern, Kaiserslautern, Germany
Synonyms Grinding tool
Definition A grinding wheel is an axisymmetric tool, consisting of the basic body and the abrasive body. It is used for most grinding processes (surface grinding, cylindrical grinding, screw grinding, gear grinding, profile grinding, etc.) with very few exceptions (e.g., belt grinding or other special grinding processes).
Theory and Application
Introduction In general, grinding wheels are distinguished in conventional and high-performance wheels. While conventional grinding wheels are
completely made of abrasive body, highperformance grinding wheels consist of a basic body covered with an abrasive body. For both types, the abrasive body consists of the abrasive grains and the bond (See Fig. 1). As indicated by their names, conventional grinding wheels are commonly used for conventional grinding processes with low material removal rates and grinding wheel speeds. Highperformance grinding wheels are used with the primary goal to achieve high removal rates. High removal rates require high grinding wheel speeds which conventional grinding wheels cannot withstand. Because of the high grinding wheel speeds and material removal rates, the basic body has to provide high mechanical stability, good damping, and thermal conductivity. Materials used for the basic body of high-performance grinding wheels are: • Metal (aluminum, steel, bronze) • Synthetic resin (with metallic and nonmetallic filler) • Fiber-reinforced synthetic resin • Ceramics Commonly, aluminum or steel is used for the basic body of high-performance grinding wheels. They provide sufficiently high mechanical stability and thermal conductivity, thereby overcompensating their poor damping.
# CIRP 2016 The International Academy for Production Engineering et al. (eds.), CIRP Encyclopedia of Production Engineering, DOI 10.1007/978-3-642-35950-7_6429-4
2
Grinding Wheel
Grinding Wheel, Fig. 1 High-performance grinding wheel and a close-up of an abrasive body
The geometry of grinding wheels ranges from plain cylindrical to complex grooved profiles (DIN ISO 525 2015). The materials of the bond and the abrasive grains for both grinding wheel types will be outlined in detail below. Bond The bond is responsible for the retention of the abrasive grains until they are blunt. Blunt grains should ideally break out of the bond to allow subsequent sharp grains to participate in the material removal process. The bond has to provide room for chips and cooling lubricant (either by pores or by space between grains). There are three types of bond that are commonly used for grinding wheels: • • • •
Synthetic resin Elastic Ceramic Metal (also galvanic)
The ideal bond would provide the following properties (Yegenoglu and Thurnbichler 1995): • • • • • •
Good dimensional stability High toughness Good thermal conductivity Good damping Good temperature stability Potentiality to be profiled
Data Loading...
