CORRECTION METHOD AND DEVICE FOR IMBALANCE OF CRANK SHAFT

• Main Authors: KOIZUMI EIJI, SASAKI TAKESHI, UENO TSUGIO, HAYAKAWA SHOHEI, SASAGAWA FUMIYUKI
• Format: Patent
• Language: English
• Published: 06.02.1987
• Subjects: BLASTING; BORING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; TURNING; WEAPONS

PURPOSE:To make it possible to correct the weight imbalance of a workpiece without moving it and to improve productivity by arranging a weight imbalance measuring device and weight imbalance correcting device in a body and starting the cutting for correction on the basis of the information obtained by measuring. CONSTITUTION:The output terminals of the rotary angle detecting sensor 110 for a workpiece W and weight imbalance amount detecting sensors 112a and 112b are connected to a weight imbalance measuring circuit 84. The imbalance amount of the workpiece W rotated by a motor 16 is detected by way of detecting the rotary unevenness of the workpiece by means of the sensors 112a and 112b, and the rotary angle of the workpiece is detected by sensor 110. An X axis travel mechanism 42, Y axis travel mechanism 48, and drill unit 54 are activated by the output of the sensors mentioned above through the circuit 84 and an operation control unit 82 correcting the weight imbalance of the workpiece by way of drilling with drills 58a and 58b.