To provide a technique capable of regulating rotation of a rotary table, even if power supply is stopped in any one of a state in which rotational motion of the rotary table is regulated and a state in which the rotational motion thereof is permitted.SOLUTION: A rotary table device includes: a support mechanism which rotatably supports a rotary table to a base; and a brake device. A fluid control mechanism provided on the brake device has: a supply flow channel which supplies a fluid pressure to the brake mechanism through a connection flow channel; a discharge flow channel which discharges a fluid pressure from the brake mechanism through the connection flow channel; a first electromagnetic valve which is configured to selectively switch a supply state in which the connection flow channel and the supply flow channel are communicated with each other, and a discharge state in which the flow channels are not communicated with each other; a branch flow channel which is connected to the connection flow channel and to which an accumulator is connected; and a second electromagnetic valve which is provided in a portion between a connection position between the connection flow channel and the branch flow channel and the first electromagnetic valve out of the connection flow channel, and is configured to open the connection flow channel by electromagnetic force during energization, and close the connection flow channel by spring force during non-energization.SELECTED DRAWING: Figure 1
【課題】回転テーブルの回転運動が規制された状態と許容された状態とのいずれで電力供給が停止された場合であっても、回転テーブルの回転を規制できる技術を提供する。【解決手段】回転テーブル装置は、ベースに対して回転テーブルを回転可能に支持する支持機構と、ブレーキ装置とを備える。ブレーキ装置に備えられた流体制御機構は、接続流路を介してブレーキ機構に流体圧を供給する供給流路と、接続流路を介してブレーキ機構から流体圧を排出する排出流路と、接続流路と供給流路とが連通した供給状態と、連通しない排出状態とを選択的に切り換えるように構成された第1電磁弁と、接続流路に接続され、アキュムレータが接続された分岐流路と、接続流路のうち、接続流路と分岐流路との接続位置と、第1電磁弁との間の部分に設けられ、通電時に電磁力によって接続流路を開き、非通電時にばね力によって接続流路を閉じるように構成された第2電磁弁とを有する。【選択図】図1
ROTARY TABLE DEVICE, MACHINE TOOL, AND BRAKE DEVICE
回転テーブル装置、工作機械、および、ブレーキ装置
07.03.2025
Patent
Elektronische Ressource
Japanisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B23Q DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING , Einzelheiten, Bestandteile oder Zubehör für Werkzeugmaschinen, z.B. Anordnungen zum Kopieren oder Steuern |
Tower crane rotary brake with rotary brake state indicating device
Europäisches Patentamt | 2023
|