| 摘要 |
A method of controlling a fine adjustment of a part such as a machine tool, for example, by using a stop and using a fluid pressure for indicating desirable changes in the position of the stop, comprises amplifying the signals produced by the changes in fluid pressure and transforming it into a hydraulic working pressure at a location separate from the means to be adjusted and feeding the working pressure through a connecting line to the adjusting means to effect the adjustment. An apparatus for carrying out the method comprises in its simplest form a diaphragm which is exposed on one side to the changes of fluid pressure in accordance with the adjustment necessary and which is exposed on the other side to a fluid pressure which may be a combination of a pneumatic and hydraulic pressure. The hydraulic pressure is maintained within a cylinder which is closed by a piston member which is connected to the diaphragm. Flexing of the diaphragm causes movement of the piston member to change the pressure in the hydraulic cylinder. The hydraulic cylinder is in turn connected through a line to a semirigid spring tube which forms a stop having a stop head at one end. The spring tube is made with corrugated sidewalls to permit its expansion in accordance with the pressure indications and variations of the hydraulic fluid to adjust the position of the stop head.
|
