MACHINE TOOL AND MANUFACTURING METHOD OF WORKPIECE

• Main Author: AKIYAMA TAKANOBU
• Format: Patent
• Language: English; Japanese
• Published: 24.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; 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; DRESSING OR CONDITIONING OF ABRADING SURFACES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POLISHING; SEMICONDUCTOR DEVICES; TRANSPORTING

To provide a machine tool capable of acquiring information of a position which serves as a reference when a workpiece and a tool are relatively moved.SOLUTION: A Z-axis motor 39 in a machine tool 1 moves a main spindle 37 in a Z direction. A Z-axis position sensor 69 detects a position of the main spindle 37 in the Z direction. A rotation sensor 71 detects rotation of the main spindle 37. A control part 5 controls the Z-axis motor 39 based on a detection value of the Z-axis position sensor 69 so as to move the main spindle 37 to a relative position preset with respect to a prescribed reference position in the Z direction when machining a workpiece 103 by using a tool 101 while the main spindle 37 is rotated. The control part 5 acquires, as the reference position, the position detected by the Z-axis position sensor 69 when rotation stop of the main spindle 37 is detected by the rotation sensor 71 in such a circumstance that the main spindle 37 is moved in the Z direction while the main spindle 37 is rotated, and the tool 101 and the workpiece 103 are brought into contact with each other in the Z direction.SELECTED DRAWING: Figure 5 【課題】ワークと工具とを相対移動させるときの基準となる位置の情報を取得できる加工機を提供する。【解決手段】加工機１において、Ｚ軸電動機３９は、主軸３７をＺ方向に移動させる。Ｚ軸位置センサ６９は、主軸３７のＺ方向における位置を検出する。回転センサ７１は、主軸３７の回転を検出する。制御部５は、主軸３７が回転している状態で工具１０１によってワーク１０３を加工するときに、Ｚ方向において、所定の基準位置に対して設定された相対位置へ、主軸３７を移動させるように、Ｚ軸位置センサ６９の検出値に基づいてＺ軸電動機３９を制御する。制御部５は、主軸３７が回転している状態で主軸３７がＺ方向に移動して工具１０１とワーク１０３とがＺ方向に接触する状況で、主軸３７の回転の停止が回転センサ７１によって検出されたときにＺ軸位置センサ６９が検出した位置を上記基準位置として取得する。【選択図】図５