GMT Eccentric compensating chuck is used for machining
forgings and black bars between centres on copy turning lathes. GMT Eccentric
compensating chucks are supplied with special cover at extra cost. This special
cover fitted on the chuck in lieu of spring loaded centre to ensure that the
chuck works as a self-centering type.
GMT Eccentric compensating chucks are supplied with spring
loaded centre. The function of this spring loaded centre is to ensure that the component
rests against its face. GMT Eccentric compensating chuck is essentially
designed where the component is usually located between two centres.
One on the
chuck body and one on the tail stock of the machine. Since the line of centres
is defined, concentricity is guaranteed, but the function of the jaws is that
they are designed to adjust and accommodate the lack of concentricity between the
centre line of the component and its outside diameter.
The chuck has floating wedge for compensation and is
operated by power - hydraulic or pneumatic rotating cylinder or by an electro mechanical
actuator. In this chuck, gripping is achieved through a radially floating
wedge. This wedge floats to the required extent in the body of the chuck to compensate
the irregularities in the roundness of the component.
The chuck body and wedge are designed to withstand heavy
cutting loads. The floating wedge is capable of withstanding high operating
forces. The floating wedge with its mechanical advantage, converts the
operating force into a high clamping force.
Construction
The body is of forged steel. The guide ways are hardened and
ground. The chuck body is suitably recessed to remove large amount of material.
The floating wedge and base jaws are made from nickel chrome steel,
casehardened and ground on all working surfaces.
The base jaws are guided in the deep, wide, hardened slots
in the body, which provide the ample bearing area necessary to withstand the forces
resulting from high gripping forces. Provision has been made for manual lubrication
of the sliding surfaces periodically through grease nipples. Serrations are
provided on the top face of the base jaws.
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.