Ceramic Cutter Wheel Handle Geometry for Precise Parallel Alignment

The patent replaces the flat chamfered face with a curved surface that conforms to the cylindrical contour of the through hole. This curvature allows the handle to maintain continuous contact with the hole wall during rotation and cutting operations, preventing axial deviation while preserving ease of insertion and adjustment.

The patent introduces an asymmetric longitudinal rebate on one side of the handle that engages with a corresponding asymmetric feature in the through hole. This asymmetric engagement provides a mechanical stop that prevents axial movement while maintaining rotational adjustability, resolving the contradiction between ease of operation and fixation firmness.

The curved engagement surface between the handle and through hole maintains constant radial contact during cutting operations, preventing the axial deviation that occurs with flat sliding surfaces. This curvature ensures the rotation plane remains parallel to the cutting line while preserving position adjustability.

The patent incorporates a preliminary locking mechanism where the asymmetric rebate engages with its counterpart before cutting begins. This pre-engagement establishes the correct parallelism and prevents axial deviation during the high-force cutting operation, while still allowing adjustment before locking.

The curved engagement surface distributes the pressing force from the actuating lever radially around the handle, preventing the sliding motion that occurs with flat surfaces. This radial distribution of force maintains stable handle position while preserving the securing function of the threaded lever.

The asymmetric rebate creates a mechanical interlock that works in conjunction with the threaded lever. The rebate prevents axial movement in one direction while the lever provides securing force, creating a more reliable fixation system that eliminates the sliding problem.