Pneumatic grinder is a kind of grinder, which is controlled by stepless speed regulation system, which can easily adjust the grinding speed suitable for grinding various parts. Adopting electric-pneumatic proportional valve closed-loop feedback pressure control, the pressure device can be regulated independently. The upper disk is set with a slow descent function to effectively prevent the crushing of thin and brittle workpieces. Through a time relay and a grinding counter, the grinding time and the number of grinding laps can be accurately set and controlled according to the processing requirements. The pressure mode can be adjusted during the working time, and it will automatically stop the machine and alarm and prompt when the grinding set time or lap speed is reached, realizing semi-automatic operation.

Grinding machine variable speed control method, grinding processing has three stages, namely, the beginning stage, the formal stage and the end stage, the beginning stage of the abrasive tool to increase the speed of rotation, the formal stage of the abrasive tool to rotate at a constant speed, and the end of the stage of the abrasive tool to reduce the speed of rotation, which is characterized by the beginning of the stage of the grinding process, the artificial control of the abrasive tool rotation speed of the acceleration from zero to increase from slow to fast, when the abrasive tool rotation speed to the formal grinding speed of half of the acceleration of the change appears an inflection point, and the acceleration of the controlled abrasive rotational speed decreases from maximum value from fast to slow until the abrasive rotational speed reaches the official grinding speed and the acceleration of the abrasive rotational speed decreases to zero.

Utilizing this feature of the adherent abrasive grinding, according to the density distribution of the relative motion trajectory between the workpiece abrasives, the density distribution of the abrasive on the abrasive is reasonably designed, so that the abrasion of the abrasive in the process of grinding does not affect the abrasive face accuracy, thus significantly improving the face accuracy of the workpiece and avoiding the trouble of repairing the abrasive. In planar fixed abrasive grinding, the rotary motion of the abrasive is the main motion and the motion of the workpiece is the auxiliary motion. In most cases, the workpiece is floating and pressed against the abrasive tool, and its law of motion is unknown. Therefore, the force on the workpiece has to be analyzed in order to find out its force state and motion law. Take the workpiece as the separator of the whole grinding system, establish the workpiece force equilibrium differential equation, and solve the equation to get the motion law of the workpiece.

The main body of the grinding machine is driven by a speed-regulated motor, equipped with a high-power deceleration system, soft-start, soft-stop, and smooth operation. Through the upper and lower grinding discs, grinder, sun wheel, traveler wheel in the processing of the formation of four directions, speed coordinated grinding movement, to achieve the upper and lower surfaces at the same time the efficient operation of grinding. The lower grinding disk can be lifted and lowered, which is convenient for loading and unloading of workpieces. Pneumatic sun wheel change direction device, precise control of workpiece two sides of the grinding accuracy and speed. Randomly equipped with a correction wheel, used to correct the parallel error of the upper and lower grinding discs.

At the same time, our grinding machine has the following eight features:

1、Automatic lapping machine is also a high-speed lapping machine and precision lapping machine. The use of abrasive cloth belt, electrical appliances used in Japan and spring, Fuji, the whole machine spraying, the color of the microcomputer color;

2, guide rail for Taiwan linear guide;

3, scraping glue to take card type lock design, can make the deformation of scraping glue to adjust the right, to ensure the quality of grinding;

4, this automatic grinder, high-speed grinder, precision grinder can be used for mechanical scraper and manual scraper grinding;

5、Special grinding wheel design, grinding cloth belt without pressure, scraping rubber is not deformed, no ripple phenomenon, to ensure the grinding accuracy;

6, grinding angle to match the performance of a variety of special printing;

7, the grinder is equipped with dust washing device, can reduce industrial pollution, is conducive to the staff's health and maintenance of equipment;

8、Automatic lapping machine, high-speed lapping machine, precision lapping machine is easy to operate, no need for specialized technology to operate.