The numerically controlled
horizontal boring machine VH 3 CNC serves for boring holes into elements of
tubular shape. Loading and unloading of the workpieces is manual, the
subsequent operation of the machine is automatic controlled by preprogrammed
data.
The basic portion of the
boring machine is a 3D-rigid welded frame. The machined surfaces of the
frame carry both the vertical and horizontal spindle head. The horizontal
head comprises three boring spindles, driven via tooth belts from an
asynchronous motor. Feed of the spindles is obtained by a drive from a
hydraulic cylinder with multiplicator.
The spindle head is mounted on linear roll guide. The vertical spindle head
serves for mounting the parts to be bored. It consists of three vertical
spindles. The upper portion (passively rotated clamping centres) - driven
and the lower portion - driving centres. The workpieces to be bored are
inserted onto the lower spindle portion and after start of the automatic
cycle are gripped by passively rotatable clamping centres (upper portion).
Radial rotation of the vertical spindles is obtained by a stepping motor
with epicyclic gear. The vertical head is feed vertically by a stepping
motor with epicyclic gear and ball screw. The spindle head is mounted on a
linear ball guide. Optimum cutting conditions in boring are obtained by
providing each spindle with a flexible hose for the supply of coolant. The
whole machine features standard covers. The space of the vertical spindle
head is fitted with a watertight cover for evacuation of coolant and chips
into a collecting through. The boring machine is
controlled from a freely programmable automatic permitting via an operating
panel the change of technological modes with
possible diagnosing of its faults. The number of finished parts is recorded
by both a daily counter and a totalizing counter.
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