Control method of grinding water flow rate during double side grinding process

1. A control method of a grinding water flow rate during a double side grinding process, wherein a double side grinder used comprises a grinding wheel, a feed unit and a water supply device, a water inlet being provided on the feed unit, the control method comprising:

preparing for grinding and completing an installation of a workpiece according to an operation procedure of the double side grinder;

during a process of double side grinding, setting a flow rate of the water inlet to decrease with a shortening of a teeth length of the grinding wheel, with the flow rate of the water inlet being set to have a linear relationship with the teeth length of the grinding wheel;

wherein a functional relationship between the teeth length of the grinding wheel and the flow rate of the water inlet is:

Q

=

(

K

-

P

)

⁢

X

Xm

+

P

,

wherein:

Q is the flow rate of the water inlet at a single side, and a unit is Litres/minute;

K is a minimum set water quantity when the teeth length of the grinding wheel is at a maximum teeth length, and a unit is Litres/minute;

P is a minimum set water quantity when the teeth length of the grinding wheel is at a minimum teeth length, and a unit is Litres/minute;

Xm is the maximum teeth length of the grinding wheel, and a unit is mm; and

X is the teeth length of the grinding wheel, and a unit is mm;

wherein the teeth length X of the grinding wheel is from 0.1 mm to 6 mm;

the water flow rate control method further comprises: monitoring the teeth length of the grinding wheel in real time during a grinding process of the workpiece and transmitting the teeth length X of the grinding wheel to a controller, wherein the teeth length X of the grinding wheel during the grinding process satisfies: X=Xm−(S−M/2),

wherein:

S is a position change of the grinding wheel, and a unit is mm;

M is a grinding thickness of the workpiece, and a unit is mm.

2. The control method of the grinding water flow rate as claimed in claim 1 ,

wherein a value of K is related to D, Xm and C, and a value of P is related to D, Xn and C,

wherein D is a spacing between adjacent grinding wheel teeth, and a unit is mm;

Xn is the minimum teeth length of the grinding wheel, and a unit is mm; and

and C is a constant determined by a material and structure of grinding wheel teeth themselves.

3. The control method of the grinding water flow rate as claimed in claim 2 ,

wherein the value of K is directly proportional to D*Xm*C, and the value of P is directly proportional to D*Xn*C.

4. The control method of the grinding water flow rate as claimed in claim 2 , wherein the grinding wheel teeth are distributed at intervals, and the spacing D between the adjacent grinding wheel teeth is 0.5 mm to 2 mm.