Technical principle of the grinder

The grinder is controlled by a stepless speed control system, which can easily adjust the grinding speed suitable for grinding various parts. The closed-loop feedback pressure control of the electro-pneumatic proportional valve can independently control the pressure device. The descending function is set on the upper plate to effectively prevent the breakage of the crisp workpiece.

With a time relay and a grinding counter, the grinding time and number of grinding cycles can be accurately set and controlled according to the machining requirements. The pressure mode can be adjusted during work, and the alarm prompt will be automatically stopped when the grinding set time or lap time is reached, achieving semi-automatic operation. Grinding machine shift control method, the grinding process has three stages, namely, the start stage, the formal stage and the end stage. At the beginning stage, the grinding tool is rotated at a rising speed, the official stage grinding wheel is rotated at a constant speed, and the end stage grinding tool is rotated at a reduced speed, which is characterized in that At the beginning of the grinding process, the acceleration of artificially controlling the rotational speed of the grinding tool increases from zero to fast. When the rotational speed of the grinding tool rises to half of the official grinding speed, an inflection point occurs in the change of the acceleration, and the acceleration of the rotating speed of the controlling tool is controlled by The maximum value decreases from fast to slow until the grinding speed reaches the official grinding speed, and the acceleration of the grinding speed decreases to zero.

By using this feature of fixed abrasive grinding, according to the relative motion trajectory density distribution between the workpiece grinders, the abrasive density distribution on the abrasive tool is reasonably designed so that the wear of the abrasive tool during the grinding process does not affect the accuracy of the abrasive surface. , thereby significantly improving the surface accuracy of the workpiece and avoiding the trouble of dressing the grinding tool. In planar fixed abrasive grinding, the rotary motion of the abrasive tool is the main motion, and the motion of the workpiece is the auxiliary motion. In most cases, the workpiece is floating on the abrasive tool and its motion is unknown. Therefore, it is necessary to analyze the force of the workpiece to determine its stress state and motion law. Take the workpiece as the separation body of the whole grinding system, establish the differential equation of the force balance of the workpiece, and solve the equation to get the motion law of the workpiece.

The main machine of the grinding machine is driven by a speed-regulating motor, equipped with a high-power deceleration system, soft start and soft stop, and the operation is stable. Through the upper and lower grinding discs, the sun wheel and the star wheel, four directions and speeds are coordinated to achieve the high-efficiency operation of simultaneous grinding of the upper and lower surfaces. The lower grinding disc can be raised and lowered to facilitate loading and unloading of workpieces. Pneumatic sun gear changing device precisely controls the grinding accuracy and speed of both sides of the workpiece. It is equipped with a correction wheel for correcting the parallel error of the upper and lower grinding discs.

The grinding basket mill inherits the characteristics of the two processes of the basket mill dispersing and grinding in one machine and one process, and can also be used as a dispersing machine alone (when the dispersing disc is in the working position and the grinding basket is not lowered) . For materials that need to be ground, the function of first dispersing and grinding can be realized (when the grinding basket is lowered to the working position, the material can be efficiently polished).

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