公开(公告)号：US3891145A

公开(公告)日：1975-06-24

申请号：US38271173

申请日：1973-07-26

Applicant: REXROTH GMBH G L

Inventor： BARTHOLOMAUS REINER ,  BERND HUBERT ,  LIEDHEGENER FRIEDEL

IPC: F15B13/042 ,  B23Q35/18 ,  F15B9/10 ,  F15B13/04

CPC classification number: F15B13/0402 ,  F15B9/10 ,  Y10T137/86582

Abstract: A tracking valve which can be mounted on a tool-supporting carriage in a machine tool and whose main valve member is a spool which is movable axially in a valve body to thereby start a hydraulic motor for the carriage so that the motor can move the carriage relative to a template while simultaneously moving one or more tools relative to a workpiece. The spool has a relatively large surface at one end, a relatively small surface at the other end, and an axial bore for a pilot valve member which is mechanically connected with a follower for the template and is movable by the follower to thereby regulate the pressure of a fluid acting against the larger surface of the spool. The smaller surface of the spool is subjected to a constant fluid pressure and such constant pressure can be assisted by the bias of a spring. The spool has lands which control the flow of fluid to and from the motor by way of ports machined into the housing of the tracking valve and the pilot valve member has two fluid flow regulating surfaces which flank an annular control chamber communicating with a compartment provided in the housing adjacent to the larger surface of the spool. When the pilot valve member is moved axially, either by the follower or by a resetting linkage which can be moved by an indexible cam drum, the fluid flow regulating surfaces change the pressure of fluid in the compartment and thus effect an axial movement of the spool relative to the housing.

Abstract translation: 一种跟踪阀，其可以安装在机床中的工具支撑托架上，并且其主阀构件是可在阀体中轴向移动的线轴，从而启动用于托架的液压马达，使得马达能够移动托架 相对于模板，同时相对于工件移动一个或多个工具。 阀芯在一端具有相对大的表面，在另一端具有相对较小的表面，以及用于先导阀构件的轴向孔，其与用于模板的随动件机械连接并且可由从动件移动，从而调节压力 流体作用在阀芯较大的表面上。 阀芯的较小表面经受恒定的流体压力，并且这种恒定压力可以通过弹簧的偏压来辅助。 阀芯具有通过加工到跟踪阀的壳体中的端口控制流体流过电动机的流动的平台，并且先导阀构件具有两个流体流动调节表面，该流体流动调节表面位于与设置在 壳体靠近阀芯的较大表面。 当先导阀构件轴向移动时，无论是通过从动件还是通过可由可转位凸轮鼓移动的复位联动件，流体流动调节表面改变隔室中的流体的压力，从而影响阀芯的轴向运动 相对于房屋。