Title:
SINGLE CRYSTAL PULL HEAD
Document Type and Number:
Japanese Patent JPS60151297
Kind Code:
A
Abstract:
The invention relates to a monocrystal pulling head. A carriage carrying the vertical pulling spindle, in which is placed a weight transducer, moves parallel to said axis under the action of a torque motor, which is controlled in position and speed and which is directly connected to the threaded rod of a screw - nut system. During its displacement, the carriage is guided by a rail, on which roll at least two pairs of rollers. A torque motor is mounted in the carriage for directly rotating the pulling spindle. Thus, the spindle displacement speeds are very accurately controlled. An electronic system integral with the pulling spindle processes the signals from the weight transducer. Contactless means make it possible to supply the electronic system, feed the useful information to the fixed parts and return thereto control instructions.
Inventors:
FURANSOWA RISARUDE
PIEERU BATERE
BURUNO FUERIYUU
MISHIERU BUROSHIEERU
PIEERU BATERE
BURUNO FUERIYUU
MISHIERU BUROSHIEERU
Application Number:
JP18625284A
Publication Date:
August 09, 1985
Filing Date:
September 05, 1984
Export Citation:
Assignee:
KURISUMATETSUKU SOC
International Classes:
C30B15/30; C30B15/32; H02K26/00; (IPC1-7): C30B15/32
Attorney, Agent or Firm:
Hideto Asamura
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