Page 13 - Annual Report_AMTDC-2018-19new

AMTDC 2018 - 2019

2. Development of Hydrostatic Guide-ways and Spindles

for Machine Tools

AMTDC (IIT-Madras) team: Ashwin kumar, Tepukul Natso, K. Ramanan,

P. Pradeep Kumar, S. Sathyan

Industry Partner: Micromatic Grinding Technologies, Bangalore

Project Highlights

AMTDC-Centre of Excellence has successfully developed technologies related to
Hydrostatic Systems (Guideways and Spindles) that are essential to build high precision
machines in the machine tool industry. Hydrostatic systems contain a layer of pressurized oil
between the moving surfaces which provide a higher stiffness and damping compared to

physical bearing systems. This is essential for applications like high speed CBN grinding, ceramic
grinding, super finishing applications, high speed internal grinding of small precision parts, etc.
The developed hydrostatic components can be used in manufacturing industry covering a
variety of sectors ranging from defense, aerospace, automotive, textile and energy sectors. The
technology of hydrostatic guideways, spindle and flow controller were so far closely held by a
few companies in the world namely Hyprostatik GmbH, Zollern GmbH, JTEKT and Schaeffler
INA. With this in-house development, it is now possible to design and manufacture these critical
elements in India, thus reducing import dependence and bringing down the cost of these
elements.

Current Status

Project is completed in terms of developing the flow controllers, hydrostatic
guideways and spindles. Final testing and characterization in an actual machine is awaited.
The prototype was exhibited in IMTEX 2019, Bangalore.

Patents Filed
1. Hydro static bearing film thickness control using a Tube Diaphragm system
2. Flow regulator to control the hydro static bearing film thickness using a circular flat
membrane

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