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Patent
Yamazaki Mazak Corporation | Date: 2017-05-03

A table clamp device for positioning and clamping a rotary table that rotates between a plurality of positions at a predetermined position with respect to a base section that supports the rotary table in a rotatable manner, the table clamp device including a reference rail attached to an attachment surface of the base section, a slider section attached in a movable manner along the reference rail, and a movement mechanism for moving the slider section on the reference rail, where the rotary table is positioned and clamped to the base section by means of the slider section by engagement of the slider section with a part of the rotary table.


In order to provide a machine tool that enables a worker to highly accurately correct an environmental temperature system thermal displacement correction amount based on temperatures of members constituting the machine tool, the machine tool includes a workpiece holding unit configured to hold a workpiece and be drivingly moved in a predetermined direction and/or drivingly rotated to machine the workpiece, a tool holding unit configured to hold a tool for machining the workpiece and be drivingly moved in a predetermined direction and/or drivingly rotated to machine the workpiece, a plurality of temperature sensors attached to members constituting the machine tool, and an environmental temperature system thermal displacement amount estimation unit configured to calculate an environmental temperature system thermal displacement amount based on temperature values each measured by a corresponding one of the plurality of temperature sensors. In the machine tool, an environmental temperature system thermal displacement correction amount is calculated by multiplying a calculation-based thermal displacement correction amount for compensating the environmental temperature system thermal displacement amount by a correction magnification, and environmental temperature system thermal displacement correction control is performed based on the environmental temperature system thermal displacement correction amount. Further, a graph display function for supporting the adjustment of the correction magnification is provided.


Patent
Yamazaki Mazak Corporation | Date: 2017-02-22

A machining program editing assist apparatus includes a display controller. While the display objects are being displayed in either one of the program data display area and the process list display area, the display controller decides that a designated display object of the one of the display areas is the display object designated by the display objects of the one of the display areas and a specific point, differentiates the designated display object from the other display objects in the one of the display areas, decides that a designated display object of the other of the display areas is the display candidate of the other of the display areas, includes the designated display object in the display objects of the other of the display areas, and differentiates the designated display object from the other display objects in the other of the display areas.


Patent
Yamazaki Mazak Corporation | Date: 2017-02-23

A machining program editing assist apparatus includes a display controller. When a specific portion on a shape display area is designated via an input device, the display controller allows a display candidate specified by the specific portion to be displayed as a designated display target of the shape display area, and allows at least one portion of data being among at least one display candidate of a program data display area and sectioned by a machining process constituting the at least one machining process and corresponding to the designated display target of the shape display area to be displayed as a designated display target of the program data display area on the program data display area in a state in which a beginning of the at least one portion of data is set to a display start position of the program data display area.


Patent
Yamazaki Mazak Corporation | Date: 2017-02-22

A device includes a CPU and a touch-panel display. In a first display mode, when control functions that belong to a first level are assigned to menu switches of a plurality of menus, one of the menus is displayed. In a second display mode, all the menus are displayed. A change switch is provided in a menu display selection area, and includes a plural-row mark to indicate that a plurality of menus exist at the first level. The CPU switches between the modes to display one or all menus in the menu display selection area. When a plurality of menus exist at the first level, the plural-row mark is displayed; otherwise, the plural-row mark is erased. When the menus are displayed in the second display mode, the plural-row mark is lit. When the menu is displayed in the first display mode, the plural-row mark is unlit.


Patent
Yamazaki Mazak Corporation | Date: 2017-06-07

A display control unit is configured to, when, in a state in which, on one display area that is either one of a program data display area and a shape display area, a display target of the one display area is displayed on the one display area, a specific portion on the one display area is designated via an input device, allow a display candidate specified by the specific portion and the display target of the one display area to be displayed as a designated display target of the one display area so as to be included in at least one display target of the one display area and be differentiated from any other display target of the one display area, and allow a display candidate being among at least one display candidate of another display area that is another one of the program data display area and the shape display area and corresponding to the designated display target of the one display area to be displayed as a designated display target of the another display area so as to be included in at least one display target of the another display area and be differentiated from any other display target of the another display area.


Patent
Yamazaki Mazak Corporation | Date: 2017-03-14

A machine tool includes a workpiece holding unit to hold a workpiece. A tool holding unit holds a tool. At least one of the workpiece holding unit and the tool holding unit is drivingly rotatable or drivingly movable in a predetermined direction to machine the workpiece with the tool. Temperature sensors are attached to members constituting the machine tool. An estimator calculates an environmental temperature system thermal displacement amount due to a heat source outside the machine tool. A correction magnification processor calculates an environmental temperature system thermal displacement correction amount. Another estimator calculates a driving system thermal displacement amount due to a heat source in the machine tool. A thermal displacement correction amount adder obtains and outputs a total thermal displacement correction amount based on which the machine tool performs thermal displacement correction control.


A vertical machining center 1 includes a table 20 to move in an X axis direction on a bed 10. On a portal column 30, a tool spindle 70 is disposed to be movable in a Y axis direction and a Z axis direction. An automatic tool changer 100 is capable of replaceably supplying a tool T to a tool spindle. The tool spindle is capable of furnishing itself with an angle tool holder 200. An angle tool holder storage unit 300 includes restriction means 380 fitted in a hole 204, which is disposed on a bottom surface of the angle tool holder 200. An unclamping unit 370 and a tool changer 350 automatically change a tool of the angle tool holder 200.


Patent
Yamazaki Mazak Corporation | Date: 2016-08-31

A tool magazine includes a magazine arm and a gripper plate. The magazine arm includes a pivotal axis on one end of the magazine arm, and a tool pot on the other end of the magazine arm. The tool pot is configured to hold a tool in a suspended manner. On the gripper plate, a plurality of grippers are disposed in a longitudinal direction of the tool magazine. The plurality of grippers are configured to hold the tool in a suspended manner on a circular arc track on which the tool moves when the magazine arm pivots. The plurality of grippers are open in a tangent direction of the circular arc at a position where the tool is held.


Patent
Yamazaki Mazak Corporation | Date: 2016-05-27

A turret tool rest includes a main shaft, a turret turning shaft, a turret, a joint base, a mill housing connection shaft, and an engagement member. The main shaft rotates a tool. A part of the main shaft is provided in the turret turning shaft. The turret turning shaft has a first coupling hole. The turret is connected to the turret turning shaft via which the turret is rotated. The joint base has a second coupling hole. The mill housing connection shaft is connected to the joint base. The mill housing connection shaft is provided between the main shaft and the turret turning shaft. Each of the mill housing connection shaft, the joint base, the part of the main shaft, and the turret turning shaft are disposed to rotate around a rotation axis of the turret. The engagement member moves in the first coupling hole and the second coupling hole.

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