Auxiliary equipment for valve grinding

Abstract

An auxiliary equipment for valve grinding is provided, including a main body, a driving shaft, a first linkage, a second linkage, a third linkage and a driven shaft. The driving shaft defines a first axial direction. The driving shaft is for connecting to a rotating tool. One end of the first linkage is connected to the driving shaft. The second linkage and the other end of the first linkage are connected to a first movable connecting portion. One end of the third linkage and the second linkage are connected to a second movable connecting portion. The driven shaft defines a second axial direction. When the first linkage rotates together with the driving shaft, the first movable connecting portion rotates about the first axial direction, the second linkage swings about the first movable connecting portion, and the second movable connecting portion swings about the second axial direction.

What is claimed is: 
     
         1 . An auxiliary equipment for valve grinding, comprising:
 a main body;   a driving shaft, defining a first axial direction, rotatably assembled with the main body, and for connecting to a rotating tool;   a first linkage, one end of the first linkage fixedly connected to the driving shaft radially;   a second linkage, movably connected with the other end of the first linkage via a first movable connecting portion;   a third linkage, one end of the third linkage and the second linkage movably connected with each other via a second movable connecting portion;   a driven shaft, defining a second axial direction and fixedly connected to the other end of the third linkage axially;   wherein the first linkage, the second linkage and the third linkage are swingable relative to the first axial direction, when the first linkage rotates together with the driving shaft, the first movable connecting portion rotates about the first axial direction, the second linkage swings about the first movable connecting portion and the second movable connecting portion swings reciprocatedly about the second axial direction.   
     
     
         2 . The auxiliary equipment for valve grinding as claimed in  claim 1 , wherein the main body includes two shell members, the two shell members are detachably assembled and the first, second and third linkages are disposed therein, and the driving shaft and the driven shaft partially extend outside the two shell members respectively. 
     
     
         3 . The auxiliary equipment for valve grinding as claimed in  claim 1 , wherein the main body includes a first shaft sleeve portion and a second shaft sleeve portion oppositely extending along the first and second axial directions, and the driving shaft and the driven shaft are respectively sleeved by and partially extend outside the first shaft sleeve portion and the second shaft sleeve portion. 
     
     
         4 . The auxiliary equipment for valve grinding as claimed in  claim 3 , wherein the driving shaft further includes a first radial flange, and a radial dimension of the first radial flange is greater than an opening dimension of the first shaft sleeve portion. 
     
     
         5 . The auxiliary equipment for valve grinding as claimed in  claim 3 , wherein the driven shaft further includes a second radial flange, and a radial dimension of the second radial flange is greater than an opening dimension of the second shaft sleeve portion. 
     
     
         6 . The auxiliary equipment for valve grinding as claimed in  claim 1 , wherein a distal end of the driven shaft is provided with a sucking member. 
     
     
         7 . The auxiliary equipment for valve grinding as claimed in  claim 6 , wherein the sucking member is a sucking disc. 
     
     
         8 . The auxiliary equipment for valve grinding as claimed in  claim 1 , wherein the first linkage is shorter than the second linkage, and the second linkage is shorter than the third linkage. 
     
     
         9 . The auxiliary equipment for valve grinding as claimed in  claim 1 , wherein an end of the second linkage and the other end of the first linkage are pivoted to the first movable connecting portion, and an end of the third linkage and the other end of the second linkage are pivoted to the second movable connecting portion. 
     
     
         10 . The auxiliary equipment for valve grinding as claimed in  claim 9 , wherein the second axial direction and the first axial direction are parallel to each other and non-coaxial.