Page 85 - Demo

83EXCHANGEABLE SOLID HEADSIn both the families, the complex shape of heads is a combination of two tool technologies: indexable and solid. The shape is pre-formed by powder metallurgy methods, and then only specific surfaces that require high precision are ground.Continuing the topic of holemaking, one more example of the exchangeable head concept can be given: a high speed reamer. In a typical high speed reamer of the BAYO-T-REAM family (Fig. 11.4), a multi-flute carbide head is mounted on a body with the use of a quick-change bayonet mechanism. Depending on the type of machined hole (through or blind), the body can carry heads with different flute directions.Fig. 11.4. BAYO T-REAM high speed reamerThe main advantages of tools with exchangeable heads are as follows:1 Versatility %u2013 a tool body can carry different heads, suitable for mounting on different bodies.2 Easy-to-use %u2013 The head is replaced in a quick and simple way.3 The %u201cNo-setup time%u201d principle, featured in some tool family designs, enables replacing a worn head when a tool is clamped directly in a machine without additional setup operations.