ROTARY TABLE DEVICE AND CONTROL METHOD OF ROTARY TABLE DEVICE

• Main Author: XIA ZHIZHEN
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2019
• 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; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; TRANSPORTING

To calculate abrasion quantity of a clamp member and a piston in a clamp mechanism of a rotary table device.SOLUTION: In a control method of a rotary table device 10, pressure V of working fluid to be supplied to a fluid chamber 54b for unclamping is lowered after a clamp mechanism driving section 14 is controlled and a brake disk 40 is unclamped, and a motor driving section 16 is controlled and a motor 38 is rotated. Abrasion quantity ΔWof a piston 48 and a clamp member 50 is calculated on the basis of pressure Vand reference pressure Vof the working fluid when a load torque τ of a spindle 30 exceeds a reference load torque τs.SELECTED DRAWING: Figure 6 【課題】回転テーブル装置のクランプ機構のクランプ部材およびピストンの摩耗量を算出する。【解決手段】回転テーブル装置１０の制御方法は、クランプ機構駆動部１４を制御して、ブレーキディスク４０をアンクランプさせた後、アンクランプ用流体室５４ｂに供給する作動流体の圧力Ｖを低下させていくとともに、モータ駆動部１６を制御してモータ３８を回転させる。そして、スピンドル３０の負荷トルクτが基準負荷トルクτｓを超えたときの作動流体の圧力Ｖnと基準圧力Ｖ0とに基づいて、ピストン４８およびクランプ部材５０の摩耗量ΔＷnを算出する。【選択図】図６