SPINDLE-COOLING STRUCTURE

• Main Authors: KANI NAOKI, HASHIMOTO NORIAKI
• Format: Patent
• Language: English
• Published: 09.09.2004
• Edition: 7
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PERFORMING OPERATIONS; SPINNING; SPINNING OR TWISTING; TEXTILES; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a spindle-cooling structure capable of effectively cooling a contact part of a main shaft 44 of a spindle with inner rings of bearings 42 and 43 in the spindle-cooling structure for cooling the main shaft 44 of the spindle connected to a shaft 29 of a motor 20 by a cooling air blowing out from an air outlet 22c of a motor housing 21 through the interior of the motor housing 21. SOLUTION: A cooling air blown out from the air outlet 22c is made to flow from two air inlet holes 44c into a hollow part 44a of the interior of the main shaft 44 of the spindle and is made to flow through a through-hole 44e of the main shaft 44 of the spindle, a recessed part 45a of an inner ring collar, a vertical groove 44f of the main shaft 44 of the spindle and a space between the front end face of the main shaft 44 of the spindle and a front cover 49 to the outside of a spindle case 41. COPYRIGHT: (C)2004,JPO&NCIPI