METHOD FOR CONTROLLING FEED SHAFT OF MACHINE TOOL AND MACHINE TOOL

• Main Author: NARIMATSU AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 05.09.2016
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MILLING; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; TRANSPORTING

PROBLEM TO BE SOLVED: To elongate the service life of a tool by optimizing a control start angle when cutting a side face.SOLUTION: In S1, each position and deflection amount of cutting edges of a tool is measured and input, and a control amount of each blade line at a rotation angle is calculated with the use of a predetermined formula. In S2, the amount of depth of cut (ae) in a radial direction and a tool radius are input. In S3, a preset formula is used for calculating the amount of angle correction θfor correcting a control position. In S4, the amount of angle correction θcalculated in S3 is added to a control position of each cutting edge. In S5, on the basis of a feed shaft command value obtained by correcting a control position, each feed shaft (control unit) is controlled and then processing is executed.SELECTED DRAWING: Figure 2 【課題】側面切削を行う場合に制御開始角度を最適化して工具の長寿命化を図る。【解決手段】Ｓ１において、工具の切れ刃の各位置とその振れ量を測定して入力し、所定の計算式を使用して回転角度における各刃列の制御量を計算する。次に、Ｓ２において、径方向の切込み量aeと工具半径とを入力し、Ｓ３において、予め設定した計算式から、制御の位置を補正するための角度補正量θＣを計算する。そして、Ｓ４で、Ｓ３で計算した角度補正量θＣを各切れ刃における制御の位置に加算して、Ｓ５において、制御の位置を補正した送り軸指令値に基づいて各送り軸（制御ユニット）を制御して加工を実施する。【選択図】図２