REST APPARATUS FOR PREVENTING BENDING OF A WORKPIECE

• Main Authors: KURIMOTO M,JA, NOMURA K,JA, ONOUCHI H,JA
• Format: Patent
• Language: English
• Published: 08.05.1973
• Subjects: 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

A rest apparatus for supporting a workpiece of any diameter to prevent bending thereof during a machining operation features a rest shaft engageable with the workpiece and a piston for moving the rest shaft being telescopically arranged therewith. The position of the piston is controlled by a servo-valve actuated by a solenoid-operated stylus which may engage the workpiece. When a preselected relationship between the stylus and the servo-valve is properly established, the rest shaft is tightly clamped while engaging the workpiece so that the workpiece may be positively supported thereby.