Yamazaki Mazak Kabushiki Kaisha

Yamazaki Machinery Works, Ltd.

Naoe Fukumura

Tsunehiko Yamazaki

Masayoshi Mizukado

Sadami Miyazaki

Kazuhiro Kikata

Koichi Maki

Masanobu Tanaka

Shunji Hasegawa

In a complex machining machine tool, a tool rest capable of attachably and detachably installing tool installing inserts thereon is provided, a plural number of virtual tools is set and registered concerning a predetermined at least one tool together with its indexing positional data in tool file, the tool data of the corresponding virtual tool is read out from the tool file on the basis of the machining instruction by the virtual tool stored in machining program, and the corresponding virtual tool is indexed on the tool rest on the basis of the indexing positional data, and then machining with the virtual tool is executed. At the time of machining, it is possible to continue machining with the same tool by only positional indexing without changing the tool. The work for changing tools can be extremely decreased even if machining contents are changed or it is necessary to change tools by tool exhaustion.

Complex machining machine tool

A complex machining machine tool is capable of executing a plurality of kinds of machining operations on a workpiece by selectively indexing and using an insert installed on a complex tool. The complex tool is registered in a tool data file as a plurality of virtual tools capable of executing corresponding machining operations. The virtual tools include a turning tool and a milling tool. In the tool data, the angle in a B-axis direction at which the tool is positioned when the virtual tool is used is stored as a B-axis angle for each virtual tool. The tool data of the corresponding virtual tool is read out from the tool file on the basis of the programmed machining instructions, and the B-axis angle is set on the basis of the tool data so as to execute machining.

A complex tool has a main body and a turning tool provided at an outer periphery portion of the main body. The turning tool is capable of machining on a rotating workpiece without rotating itself. An insert installed on the turning tool has a top end which contacts a workpiece by projecting a predetermined amount outside the main body's outer peripheral face. It also projects a predetermined amount from a top end portion of the main body in a direction of an axial center of the tool. The complex tool also has a rotating tool for machining by rotating itself. The rotating tool accomplishes machining corresponding to an axial center of the main body.

Complex tool

A method of machining a workpiece uses a complex tool having a number of inserts. The tool is installed on a tool holder of a machine tool and used for a turning machining operation on a workpiece, including rotating the workpiece, and selectively using one or more of the inserts on the complex tool, with the complex tool being fixed and held. A milling machining operation is performed on a workpiece using one or more of the inserts, with the complex tool being rotated and driven. Both turning machining and milling machining operations can be performed without changing tools. Extremely efficient machining is possible.

Method of machining workpiece with complex tool

In a lathe an angular position &bgr; x for respectively positioning a single tool in the plural numbers of directions of the tool edge is computed according to designated shape information IFa, and the tool held by the tool holding body can be positioned in the plural number of directions of the tool edge in order by indexingly positioning the tool holding body in the B-axis direction on the basis of the computed angular position &bgr; x at the time of machining. A plurality of machining modes can be machined with a single tool.

Machine tool

A machine tool capable of performing screw-machining on a rotating workpiece has a tool rest which can attachably and detachably equip a turning tool with an insert on its tip and is provided so as to be freely driven to move in first and second axial directions orthogonal to each other. The tool rest is also being provided so as to freely rotate about a third axis orthogonal to the first and second axial directions so as to be positioned at a selected tool-rest angle with respect to the workpiece. The machine tool includes suitable features to allow inputting of machining information, computing of a cutting pattern, and execution of screw-machining.

The turning machining tool has a main body forming tool holding portion . An insert holding portion is provided to the main body so as to being rotatably in a predetermined plane. A insert is detachably attached to the insert holding portion . A rotation drive means for the insert holding portion is provided to the main body. It is possible to freely and rotatably drive the insert holding portion in the predetermined plane. Therefore, it is possible that the insert takes various machining positions for main body . So, various machining such as the bag hole machining becomes possible.

Turning machining tool

A method of controlling selection of tools in a quadriaxial numerical control lathe provided with two tool rests each mounting a plurality of tools and adapted to perform machining by the use of the tool rests, without requiring a programmer or the like to give an instruction concerning selection of tools to be used in each of machining processes when he/she forms a machining program. The method comprises: providing a tool kind memory storing a tool kind table showing the kinds of tools to be used in accordance with machined portions and machining modes, and a tool information memory storing a tool data such as the kinds of the tools mounted on the tool rests, the positions of the tools on the tool rests, identification of the tool rests and so force; retrieving the content of the tool kind table in the tool kind memory in accordance with the machining modes and the machined portions for each of machining processes in order to determine the kinds of the tools to be used in each machining process; and further retrieving the tool data in the tool information memory on the basis of the kinds of the tools thus determined, thereby to select and extract the tools usable in each machining process.

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Nagoya, Japan

Naoe Fukumura