Hydrostatic pressure guide mechanism and machine tool

A hydrostatic pressure guide mechanism comprising:

• a guide member having a smooth guide surface;
• a movement member having a slide surface facing the guide surface and an annular placement groove formed on the slide surface;
• an annular hermetically-closing member that is disposed in the placement groove and forms hermetic contact with the guide surface when the movement member and the guide member are disposed to face each other to define a space hermetically sealed by the slide surface, the guide surface, and the hermetically-closing member;
• an oil supply structure configured to supply oil into a region on the slide surface surrounded by the hermetically closing member;
• and
• an oil recovery structure configured to recover the oil from the region on the slide surface surrounded by the hermetically closing member, wherein
• the oil recovery structure comprises a recovery hole that is formed in the region on the slide surface surrounded by the hermetically closing member, the recovery hole being opened on the slide surface;
• the slide surface of the movement member comprises a pressure holding surface surrounding the recovery hole, and a flank surface surrounding the pressure holding surface;
• and
• a height of the pressure holding surface is higher than a height of the flank surface such that the pressure holding surface is positioned closer to the guide member than the flank surface is positioned relative to the guide member when the movement member is placed to face the guide member.