Punch

Application:

Both ends of a family of punches are to be ground on a CNC OD grinder.

Due to the length of the punches, it is necessary to swallow the workpieces into the chuck to minimize the height of the chuck jaws, and keep the workpieces close to the spindle nose for greater rigidity and highest accuracy.

Required accuracy: 0,0025 mm TIR

Solution:

MicroCentric developed a self contained air chuck with a partial through hole.  The chuck is mounted to an adapter plate which incorporates a manifold for the air tube assembly, which directs air into the chuck. The chuck includes a threaded centre housing onto which part stops are mounted. Hardened and ground top jaws clamp the workpieces on their OD to maintain the required concentricity for both grinding operations.

Achieved accuracy: 0,0015 mm

Technology: APC