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GMT universal ball
lock chucks (UBLC) are designed
to clamp components and ensure face butting.
Ball
Lock Chucks have certain distinctive advantages over wedge
and lever type chucks. Jaw movement is achieved by sliding
and swivel of the base jaws, which are amply proportioned.
This results in less wear, less bearing
pressure and less stress concentration in the jaws when
compared to same sizes of wedge or lever type chucks.
Apart from the radial clamping forces, these ball lock
chucks provide an axial force to pull the component
against the butting face. This is achieved as the jaw
movement is along an arc. Wedge, base jaw, spherical
aligner, spherical bushes are made of Nickel Chrome
Steel, case hardened and precision ground on all working
surfaces.
Eccentric compensating type of ball lock chuck is essentially
designed where the component is usually located between
two centres, one on the chuck body and one on the tailstock
of the machine. Since the line of the centres is defined,
concentricity is guaranteed and the ball lock chuck
design allows adequate freedom for the jaws to adjust
and accommodate the irregularities of the job before
full clamping force is applied. |
