4-axis grinding center
The Dom Plus 4-axis grinding center is equipped with automated loading capacity for high production grinding of indexable inserts on the periphery with two K-Lands through integrated re-clamping. With up to 12-tray capacity for high production autonomy, a 180° swiveling loading gripper allows flexible handling processes and grinding for a second chamfer.
Features include maintenance-free direct drives for the X-, Y-, and C-axis; short transfers due to agile handling and internal dressing; and fast product changeover facilitated by off-line programming and graphic simulation.
Agathon Machine Tools Inc.
Pneumatic power chucks
Rota TB2 pneumatic self-contained power chucks have through-holes of up to 560mm. With an air pressure of 6 bar, clamping forces of up to 280kN are possible. The base jaw guidance uses a special seal to prevent penetration of contamination, reducing maintenance costs. Design of the base jaws have been optimized for minimal loss of centrifugal force even at high rotational speeds. An advanced lubrication system ensures constant clamping forces and an optional integrated pressure sensor offers maximum process reliability.
A double-acting check valve with extra-large channel bores speeds the clamping process. After machining, the quick action ventilation system releases the clamping setup.
Modular combination tools for cylinder-head machining
Modular systems allow combination tool components to be replaced instead of the entire tool. For machining valve-spring seats and the parent metal bore for valve-seat rings and valve guides on an aluminum cylinder head, two combination tools have a hydraulic expansion system that clamps cylindrical shanks inward and ring-shaped tools outward.
The first tool’s uncoated solid carbide Tritan-Drill rough machines the blind bore for the valve guide, and a PCD-tipped ring-shaped countersinking tool finish-machines the valve spring seat.
The combination tool shortens cycle time, allowing a blind bore to be drilled with an 8,000rpm spindle speed and a 3.2m per minute feed rate, while the valve spring seat is finish-machined with an 8,000rpm spindle speed and a 2m per minute feed rate. More than 30 seconds are saved machining each cylinder head compared with twin cutting tools.
The second tool combines a PCD-tipped reamer for fine machining the blind bore for the valve guide, and a ring-shaped PCD-tipped boring tool for fine machining the parent metal bore for the valve seat ring. Blind bore diameters for valve guides are generally identical throughout a series, but valve-seat ring diameters differ. With the modular tool system, only the ring-shaped boring tool has to be replaced for the different diameters of the valve seat rings.