Bore Working Tool Elastic Hinge Arm Radial Adjustment

The invention extracts and eliminates the harmful recesses and slits from the holder structure. Instead of having recesses to hold blades or slits for adjustment, the design uses a smooth cylindrical holder surface where grind stones are mounted externally with adjustable protrusion lengths, completely removing the chip-trapping geometry while preserving adjustability functionality

The invention segments the adjustment function from the holder body itself. Rather than integrating adjustment mechanisms within recesses or slits in the holder, the design uses separate adjustable grind stone components that can be independently positioned and secured, allowing adjustment without creating chip-entry pathways in the holder

The invention introduces dynamic adjustability through a draw bar mechanism that allows the protrusion lengths of multiple grind stones to be adjusted simultaneously or individually along the radial direction. The draw bar can be moved axially to change the protrusion length of all grind stones uniformly, providing simple dimensional control without complex individual adjustment mechanisms for each grind stone

The draw bar serves multiple functions: it simultaneously adjusts the protrusion lengths of all grind stones, maintains their parallel alignment, and can be adjusted in a single operation. This universal adjustment mechanism replaces what would otherwise require separate complex adjustment devices for each grind stone, simplifying both the structure and the adjustment process while maintaining manufacturing precision