An indexing fixture
is used to lock the spindle in position for each cut.
Positioning of the crankshaft for grinding each pin is accomplished using a complex indexing fixture that re-positions the shaft to the predetermined location before each plunge of the grinding wheelhead.
In the orbital grinding process, a highly responsive CNC-controlled wheel-feed system permits the wheel to precisely follow the orbit of each pin about the main journal axis, thereby eliminating indexing crankheads and special indexing fixtures. By centering and supporting the crankshaft on the main journal centerline, there is a direct correlation between the grinding process and the crankshaft's operation in the engine.
Positioning of the crankshaft for grinding each pin is accomplished using a complex indexing fixture
that repositions the shaft to the predetermined location prior to each plunge of the grinding wheelhead.
Along with the robot and indexing fixture
station, the robot cutter cell system includes a comprehensive cell safety system plus an operator work station with a vivid flat screen display and touch screen controls.
"An on-board robotic parts handling system/automatic gauging system loads the part onto an automatic indexing fixture
," explains Randy Roberts, Zagar vice president.
The Japanese company needed a horizontal indexing fixture
. Special attention had to be given to the weight of the part, the distortion, impact, torque, and mounting hardware involved in moving such a large workpiece without compromising the position integrity.