Page 29 - AMTDC Annual Report 2019-20flipbook

Headstock is designed as spindle motor with
integrated C axis and hydraulically operated spindle brake.
The spindle motor is air-cooled and stands out for high
dynamic, high torque, high thermal stability and a low noise
level. Counter spindle is designed as spindle motor with
integrated synchronized axis and hydraulically operated Multiple Machining
spindle brake. Counter spindle is used for second set up or
to support long shaft or heavy work piece. Operations in a Single
An energy efficient and environment friendly spindle air-
cooling system is developed that removes the heat Set-up
generated in motor parts inside the spindle assembly.
The system is enabled with 4-axes slide: X1-, Z1-, Y- and Uniqueness of this machine lies in
B-axis with preloaded linear guiding elements and a round its capability of performing multiple
axis (B-axis) with 3-fold Hirth serration for spindle locking, machining operations such as turning,
programmable via M-functions. All linear axes are equipped milling, grooving, gear cutting/
with direct absolute gauging systems with glass scale. The hobbing, boring, drilling, reaming, fly
B-axis has an incremental magnetic encoder. cutting, grinding and threading etc., in
The automatic tool changer (ATC) is designed as a a single set-up maintaining a high
double gripper, enabled for cam swivel operation. ATC precision finish. The machine also
accommodates 88 tools on it and is enabled to
automatically change the tools as required. Long boring bar ensures a reduction in set-up time and
of length 1m and upto 150 Kg is another key technology thereby enhances productivity.
developed for deep boring operation. The boring bar is also Technology of critical components viz.
accommodated in ATC with a special arrangement of easy long boring bar system, machining
loading and unloading. The machining centre is provided dynamics control and spindle air
with a central lubrication system with oil container for cooling are subsequently developed
impulse lubrication and electric monitoring. Coolant indigenously.
equipment with separate cooling circuits is provided for
efficient cooling.
For energy efficiency, optimization of dynamic
structural parts such as slides, etc are carried out using
sophisticated FEM analysis that in turn reduce motor size
and lead to the development of efficient hydraulic system
and power monitoring & management system.

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AMTDC Annual Report | 2019-20