Grinding wheel

Abstract

A grinding wheel, including a base and a grinding ring disposed on the base. The grinding ring includes a grinding face including water outlets passing through the grinding ring. Each water outlet communicates with a corresponding water channel disposed inside the base and the water channels are connected to a water inlet. The number of the water outlets in an arc length on the grinding face is more than zero, where the arc length is between one and three times the contact line length between the grinding ring and a workpiece during grinding. The grinding face is a special-shaped grinding face comprising a non-entity processing region and an entity processing region. The water outlets are the non-entity processing region configured for washing, and a remaining part of the special-shaped grinding face is the entity processing region for grinding.

The invention claimed is: 
     
         1 . A grinding wheel, comprising a base and a grinding ring disposed on the base; the grinding ring comprising a grinding face comprising water outlets passing through the grinding ring; the water outlets each communicating with a corresponding water channel disposed inside the base, and the water channels being connected to a water inlet; wherein
 a number of the water outlets in an arc length on the grinding face is more than zero, wherein the arc length is between one and three times a contact line length between the grinding ring and a workpiece during grinding;   the grinding face is a special-shaped grinding face comprising a non-entity processing region and an entity processing region; the water outlets are the non-entity processing region configured for washing, and a remaining part of the special-shaped grinding face is the entity processing region for grinding; and   total circumference lengths at different axial positions of the entity processing region are proportional to or approximately proportional to machining allowances at corresponding positions of the workpiece, respectively.   
     
     
         2 . The grinding wheel of  claim 1 , wherein the number of the water outlets is smaller than or equal to 30. 
     
     
         3 . The grinding wheel of  claim 1 , wherein each water outlet is in a regular geometric shape or an irregular geometric shape. 
     
     
         4 . The grinding wheel of  claim 2 , wherein each water outlet is in a regular geometric shape or an irregular geometric shape. 
     
     
         5 . The grinding wheel of  claim 1 , wherein an axial width of each water outlet is larger than a thickness of a processing face of the workpiece. 
     
     
         6 . The grinding wheel of  claim 2 , wherein an axial width of each water outlet is larger than a thickness of a processing face of the workpiece. 
     
     
         7 . The grinding wheel of  claim 1 , wherein an axial width of each water outlet is smaller than a thickness of a processing face of the workpiece. 
     
     
         8 . The grinding wheel of  claim 2 , wherein an axial width of each water outlet is smaller than a thickness of a processing face of the workpiece. 
     
     
         9 . The grinding wheel of  claim 1 , wherein the water inlet is disposed on an axle hole of a center axle disposed on an axial position of the base or disposed on the base; and the water inlet is a mouth facing outward. 
     
     
         10 . The grinding wheel of  claim 2 , wherein the water inlet is disposed on an axle hole of a center axle disposed on an axial position of the base or disposed on the base; and the water inlet is a mouth facing outward. 
     
     
         11 . The grinding wheel of  claim 9 , wherein the base comprises two base plates; the grinding ring is clamped between the two base plates; a water storage region functioning as the water channel forms between the two base plates; and the water inlet is disposed on one base plate, and the center axle is disposed on the other base plate. 
     
     
         12 . The grinding wheel of  claim 10 , wherein the base comprises two base plates; the grinding ring is clamped between the two base plates; a water storage region functioning as the water channel forms between the two base plates; and the water inlet is disposed on one base plate, and the center axle is disposed on the other base plate. 
     
     
         13 . The grinding wheel of  claim 11 , wherein the water inlet is a ring-shaped mouth disposed on the base plate. 
     
     
         14 . The grinding wheel of  claim 12 , wherein the water inlet is a ring-shaped mouth disposed on the base plate. 
     
     
         15 . The grinding wheel of  claim 13 , wherein the base plate provided with the ring-shaped mouth is a ring-shaped press plate; a diameter of an inner ring of the ring-shaped press plate is larger than the center axle; and the ring-shaped mouth is produced between the inner ring of the ring-shaped press plate and the center axle. 
     
     
         16 . The grinding wheel of  claim 14 , wherein the base plate provided with the ring-shaped mouth is a ring-shaped press plate; a diameter of an inner ring of the ring-shaped press plate is larger than the center axle; and the ring-shaped mouth is produced between the inner ring of the ring-shaped press plate and the center axle. 
     
     
         17 . The grinding wheel of  claim 9 , wherein when two or more than two grinding wheels are arranged co-axially in parallel for using, the water channels of the grinding wheels communicate with one another. 
     
     
         18 . The grinding wheel of  claim 10 , wherein when two or more than two grinding wheels are arranged co-axially in parallel for using, the water channels of the grinding wheels communicate with one another. 
     
     
         19 . The grinding wheel of  claim 1 , wherein the grinding ring is a superhard abrasive; and the entity processing region of the grinding ring is formed by one-step formation or by combining formation. 
     
     
         20 . The grinding wheel of  claim 2 , wherein the grinding ring is a superhard abrasive; and the entity processing region of the grinding ring is formed by one-step formation or by combining formation.