Title:
MEASURING INSTRUMENT FOR CORE OF BAR STEADYER
Document Type and Number:
Japanese Patent JP2605561
Kind Code:
B2
Abstract:
PURPOSE: To measure the pass center of bar steadyer with high accuracy and in a short time.
CONSTITUTION: This device consists of a laser beam emitting device 2 irradiating with laser beam in the opposite direction which is provided on one of an inlet side or an outlet side of the bar steadyer 3 of a piercing mill 1 and a sensor head 6 of a beam receiving position detector provided in agreement with a reference pass center of the bar steadyer 3 on the opposite side of the laser emitting device 2. Further, a sensor head 10 of a beam receiving position detector to receive the laser beam arranged on a concentric circle in a dummy tube 9 held in the bar steadyer 3 and arithmetic display devices 7, 8 to obtain the difference between the axis of the dummy tube 9 obtained from beam receiving results of the beam receiving position detector and the laser beam are contained. In this way, dimensional fault such as thickness deviation of a product generated by deviated alignment can be reduced.
Inventors:
Okada Yoshitora
Application Number:
JP32614392A
Publication Date:
April 30, 1997
Filing Date:
November 10, 1992
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
B21B19/04; B21B25/02; G01B11/00; G01B11/27; (IPC1-7): B21B25/02; G01B11/00; G01B11/27
Attorney, Agent or Firm:
Yoshihisa Oshida