Page 17 - AMTDC Annual Report 2019-20flipbook

Patent 1 - CMD
Flow Controller

Patent 2 - CMD Flow Controller

Indigenously developed hydrostatic slideways
along with the novel design of flow controller result in
zero thermal deformation even after a test run of more
than 48 hours. Guideways need 0.9 l/min at 28 bar
pressure to maintain very high stiffness and
uninterrupted operation under wide ranges of loading Technology Denial - The
conditions. Repeatability of slide is within the limit of 0.6
μm and is further fine-tuneable depending on Impelling Driving Parameter
requirements of the customers. The development of
slides for the hydrostatic system is done based on Flat- The technologies related to hydrostatic
Flat type guideways with 12-Pockets arrangement. For systems for the precision machining are
an operating pressure of 30 bar and stroke length 300 available in the global market. However,
mm, sliding speed is around 20 m/min and the load these sophisticated technologies are not
carrying capacity is about 1.5 ton. The developed accessible. Current Indian status of import
hydrostatic slide is suitable for operation with ball screw dependence at a huge cost is made worse by
drive and linear motor drive. Other than flow controllers technology denial in the international arena.
and hydrostatic slide, two types of Test Rigs have been
developed for the project. Test Rig 1 is a single pocket To overcome this technology denial by
test rig that has been developed for testing the the global players and thereby relieve of
performance characteristics of various flow controller import dependence, AMTDC-CoE in
technologies for slides and spindles. Test Rig 2 is a multi- collaboration with its industry partner MGTL
pocket system that has been developed to test the took up the challenge of developing such
performance of the developed hydrostatic slide and highly sophisticated technologies
spindle as a whole, similar to a machine. indigenously with the support of DHI, Govt.
The complete design methodology developed of India funding under the scheme of
during this project is competent for the implementation ‘Enhancement of competitiveness in Indian
of the hydrostatic spindles and guideways in other Capital Goods sector’ in 2016.
grinding verticals such as internal grinding, centreless
grinding, etc. With this remarkable progress, the Indian
machine tool industry is set to become globally
competitive by offering machines with affordable
hydrostatic systems that can enhance various machining
operations such as ultra-precision milling, diamond
turning, ceramic grinding, high speed CBN grinding,
precise cam grinding, etc.

16
AMTDC Annual Report | 2019-20