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The Principle Of Grinding Mill
Jul 31, 2017

The grinding machine is controlled by stepless speed control system, which can easily adjust the lapping speed of various parts. Using the electro-pneumatic proportional valve closed-loop feedback pressure control, can independently control the pressure device. The upper plate is provided with a slow down function to prevent the crushing of the crisp workpiece. Through a time relay and a grinding counter, the grinding time and the number of grinding rings can be accurately set and controlled according to the processing requirements. Work can adjust the pressure mode, to achieve grinding set time or lap speed will automatically stop alarm prompts to achieve semi-automatic operation.

Grinding machine speed control method, grinding process has three stages, that is, start stage, formal stage and end stage, start the stage of grinding wheel speed rotation, the formal phase of the grinding tool constant speed rotation, the end stage of the grinding wheel spin down, the characteristic is that in the beginning of the grinding process, the acceleration of the artificial control tool speed from the zero from slow to fast increase, when the grinding wheel speed up to the official grinding speed of half, the change in the acceleration of an inflection point, control of the speed of the grinding wheel from the maximum to slow down the acceleration Until the abrasive speed to the official grinding rate, the speed of the grinding wheel reduced to zero.

Using this characteristic of solid abrasive grinding, according to the relative trajectory density distribution between the workpiece and the grinding wheel, the abrasive density distribution is rationally designed so as to make the abrasive wear in the grinding process not affect the precision of the abrasive face, thus greatly improve the precision of the workpiece and avoid the trouble of dressing the abrasive. In the plane solid abrasive grinding, the rotary movement of the abrasive is the main movement, the workpiece movement is auxiliary movement. In most cases, the workpiece is floating pressure on the abrasive, its motion is unknown. Therefore, it is necessary to analyze the force of the workpiece in order to find out its stress state and motion law. Taking the workpiece as the separating body of the whole grinding system, the work force balance differential equation is established, and the motion law of the workpiece can be obtained by solving the equation.