Хонинговальные головки

9.3.1 Types of Grain Wear Overlap between the above-mentioned wear mechanisms leads to changes in the abrasive grain. These wear types are depicted in Figure 9.2. They basically can be divided into [3] Process Tool Single grain force Grain holding force Load impulse Toughness of the bond Load direction // Flattening Heat conductance Contact zone […]

A slightly different concept of lubricant distribution is the supply of cooling lubricant from the interior of the grinding wheel or the grinding layer. The fluid is fed into a chamber of the wheel body allowing the centrifugal force to distribute it through radial channels to the grinding layer. Through pores or gaps in the […]

11.5.1 Introduction Primary motion between tool and workpiece characterizes the grinding process, but also supporting processes and systems are of major importance. In this chapter, basically the monitoring of the conditioning process and the coolant supply will be discussed. 11.5.2 Sensors for Monitoring of the Conditioning Process The condition of the grinding wheel is a […]

Surface conditioning of a grinding wheel generally includes the two requirements of truing and dressing. Dressing replaces worn (dulled) cutting edges with sharp edges by fracturing the worn grains and regenerates a wheel face loaded with swarf by removing a layer from the face with a dressing tool. Dressing a superabrasive wheel is much more […]

A variation on the Flat and Vee is the Double Vee slideway. This again depends on gravity for its preload and is self-compensating for wear. However, it can handle changes in the load position with much less yaw error. The major difficulty with this slideway design is in the manufacture, especially over any significant length. […]

15.12.1 Introduction The problems with spindles designed for small wheels is somewhat different to those for larger wheels in that nearly all wheel bond types, including most superabrasives, are limited by bond strength to operating in the speed range of 35 to 60 m/s. Taking 100 mm (4) diameter as the cutoff for this discussion, […]

16.1 TYPES OF SURFACE GRINDING PROCESS Terms for grinding were incorporated in an international dictionary for material removal processes by International Institution for Production Engineering (CIRP) after agreement between represen­tatives of a number of countries including from United States, Europe, China, Japan, and Asia [CIRP 2005]. The dictionary gives terms for material-removal processes in French, […]

Creep feed grinding with CBN can be divided quite definitively between plated CBN and vitrified CBN in terms of distinct machine conditions, coolant, and operating parameters. TABLE 16.8 Example of Removal Rates in the Viper Process for Grinding Turbine Blade Root Forms Pass Wheel Speed Table Speed Depth of Cut Dressing Depth Q’w (m/s) (mm/min) […]

17.1 THE BASIC PROCESS 17.1.1 Introduction External cylindrical grinding refers to the grinding of an outer surface of a workpiece around an axis of rotation with the part held between centers. The surface may be a simple straight diameter or stepped, tapered, threaded, or profiled [Marinescu et al. 2004]. The grinder may be configured for […]

The selection of grain type has a significant impact on wheel length. Specifying of the length of an alox or ceramic wheel is based on the recognition that there is a significant level of wheel wear for each part that is ground. The length of the wheel is, therefore, kept short and the wheel oscillates […]