# US 10,245,694 B2 · Dry machining apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,694 B2 - Document ID: US10245694B2 - Status: Granted - Kind: B2 - Application number: 15/531,941 - Filed: 2015-11-19 - Published: 2018-09-13 - Granted: 2019-04-02 - Earliest claimed: 2014-12-03 - Assignees: Mitsubishi Heavy Industries Machine Tool Co., Ltd. - Applicants: Mitsubishi Heavy Industries Machine Tool Co., Ltd. - Inventors: Yoshinao Komatsu; Hirohisa Ichihata; Kazuyuki Ishizu - Web page: https://patentgrep.com/patent/US10245694B2 ## CPC - B23Q 11/005: {by blowing} - B23Q 11/122: {Lubricant supply devices (F16N7/00 takes precedence)} - Y02P 70/10: Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A dry machining apparatus includes: a tool that machine a workpiece; a first surface that is arranged below the tool and receives chips generated by the machining; a second surface that is arranged upper than the first surface; a third surface that connects the first surface and the second surface; and an air jet nozzle that has an air jet port which jets air toward a boundary portion between the second surface and the third surface from the second surface, and the air jet nozzle supplies at least a part of the air jetted from the air jet port to the first surface. ## Claims ### Claim 1 A dry machining apparatus, comprising: a tool that machines a workpiece; a receiving surface arranged below the tool and the workpiece, said receiving surface comprising a first surface that is arranged below the tool and the workpiece and which receives chips generated by the machining; a second surface that is arranged above the first surface; and a third surface that connects the first surface and the second surface; said apparatus comprising an air jet nozzle that has an air jet port which jets air toward a boundary portion between the second surface and the third surface from the second surface, said air jet nozzle supplying at least a part of the air jetted from the air jet port to the first surface. ### Claim 2 (depends on 1) The dry machining apparatus according to claim 1, wherein a dimension of the air jet port relative to a horizontal direction parallel to the first surface is larger than a dimension of the air jet port relative a vertical direction. ### Claim 3 (depends on 1) The dry machining apparatus according to claim 1, having: a convex portion provided at the boundary portion; or a concave portion provided at the boundary portion; or both a convex portion and a concave portion provided at the boundary portion. ### Claim 4 (depends on 1) The dry machining apparatus according to claim 1, wherein the boundary portion includes: a first line portion; and a second line portion that is arranged at a predetermined angle with respect to the first line portion. ### Claim 5 (depends on 1) The dry machining apparatus according to claim 1, wherein the air jet nozzle repeats: an operation of jetting the air from the air jet port for a first period; and an operation of stopping the jetting for a second period after elapse of the first period. ### Claim 6 (depends on 1) The dry machining apparatus according to claim 1, comprising: a tubular member that has at least a part thereof being arranged around the air jet nozzle, and has an air outflow port that supplies, to the first surface, air that has flown in from an air inflow port formed between the tubular member and an outer surface of the air jet nozzle, and air that has been jetted from the air jet port. ### Claim 7 A dry machining apparatus, comprising: a tool that machines a workpiece; a first surface that is arranged below the tool and receives chips generated by the machining; an air jet nozzle that has an air jet port that jets air; and a tubular member that has at least a part thereof being arranged around the air jet nozzle, and has an air outflow port that supplies, to the first surface, air that has flown in from an air inflow port formed between the tubular member and an outer surface of the air jet nozzle, and air that has been jetted from the air jet port. ### Claim 8 (depends on 7) The dry machining apparatus according to claim 7, wherein an air flow channel between the outer surface of the air jet nozzle and an inner surface of the tubular member includes a reducing portion having cross sectional area that decreases toward the air outflow port from the air inflow port. ### Claim 9 (depends on 8) The dry machining apparatus according to claim 8, wherein the air flow channel of the tubular member includes an expanding portion having cross sectional area that increases toward the air outflow port. ### Claim 10 (depends on 7) The dry machining apparatus according to claim 7, having a first protrusion member that is provided at the air outflow port, and protrudes toward the center of the air outflow port. ### Claim 11 (depends on 1) The dry machining apparatus according to claim 1, wherein the air jet nozzle has an inner flow channel including: a narrowed portion; a reducing diameter portion having cross sectional area that decreases toward the narrowed portion; and an expanding diameter portion having cross sectional area that increases toward the air jet port from the narrowed portion. ### Claim 12 A dry machining apparatus, comprising: a tool that machines a workpiece; a first surface that is arranged below the tool and receives chips generated by the machining; and an air jet nozzle that: has: an air jet port that jets air; and an inner flow channel including: a narrowed portion; a reducing diameter portion having cross sectional area that decreases toward the narrowed portion; and an expanding diameter portion having cross sectional area that increases toward the air jet port from the narrowed portion; and the air jet nozzle supplies, to the first surface, at least a part of the air that has flown through the inner flow channel and has been jetted from the air jet port. ### Claim 13 (depends on 12) The dry machining apparatus according to claim 12, including a second air jet nozzle that is arranged lower than the air jet nozzle, and that jets air having pressure lower than pressure of air jetted from the air jet port of the air jet nozzle. ### Claim 14 (depends on 12) The dry machining apparatus according to claim 12, having a protrusion member that is provided at the air jet port, and protrudes toward the center of the air jet port.