[特开昭54-117983] 这种定位装置装在加工大齿圈之类的工件的机床工作台上(图1),用来调节工件的中心位置和高低位置。这种装置一般采用三个。 图2是这种装置的剖面图。圆筒3装在壳体7中,把所承受的工件重量,通过圆筒下部13和楔块12,传到楔形滑块10上。圆筒下部是空心的,楔块12 [JP-A-54-117983] Such a positioning device is mounted on a machine table for processing workpieces such as a large ring gear (Fig. 1), and is used to adjust the center position and the height position of the workpiece. This device generally uses three. Figure 2 is a cross-sectional view of such a device. The cylinder 3 is mounted in the housing 7 and transfers the weight of the workpiece to the wedge-shaped slider 10 through the lower portion 13 of the cylinder and the wedge 12. The lower part of the cylinder is hollow, wedge 12