Abstract: Cryogenic machining is a new
technology which makes use of the special mechanical properties
of materials in a cryogenic or a "super cold" state for
machining. The control of a cryogenic machining system (CMS) is
one of the key problems which need to be solved for practical
cryogenic machining. A temperature field control principle is
presented which calculates the heat source temperature in the
light of the tool temperature field information, and a control
model of three-dimensional dynamic temperature field for CMS is
established, and the boundary conditions and the heat source of
temperature field in orthogonal cutting are discussed. Based on
the investigation of the control feature and technique, a
prototype system for controlling CMS is created.
Key words:
Cryogenic machining Temperature
field Control model Control system
* This project is supported by National Natural Science Foundation of
China. Manuscript received on August 2, 1994; revised
manuscript September 21, 1994
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