First, the type and characteristics of the grinder
The main types of grinders are disc grinders, rotary grinders and various special grinders. Disc grinders are available in single discs and double discs, and are most common in double disc grinders. In the double disc grinder (see [Double Disc Grinder]), multiple workpieces are simultaneously placed in the cage between the upper and lower grinding discs, and the cage and the workpiece are moved parallel by the eccentric or planetary mechanism. . The lower grinding disc rotates, and the upper grinding disc parallel thereto can be rotated or reversely rotated with the lower grinding disc, and can be moved up and down to press the workpiece (pressure adjustable). In addition, the upper grinding disc can be rotated by an angle with the rocker arm about the column to load and unload the workpiece. The double disc grinder is mainly used for processing two parallel faces, one plane (additional accessories for pressing the workpiece), the outer cylindrical surface and the spherical surface (using a grinding disc with a V-shaped groove). When machining the outer cylindrical surface, the workpiece should be properly slid and scrolled. The single-disc grinding machine has only one lower grinding disc for grinding the lower plane of the workpiece, so that the workpieces of different shapes and sizes can be processed in the same plate, and the grinding precision is high. Some grinders also have a mechanism that automatically corrects the grinding disc during the grinding process.
The rotary shaft grinding machine rotates the workpiece or the lap (adjustable grinding ring or grinding rod) by the main shaft rotating in the forward and reverse directions, and the structure is relatively simple, and is used for grinding the inner and outer cylindrical surfaces. The special grinding machine has a center hole grinding machine, a steel ball grinding machine and a gear grinding machine depending on the workpiece to be ground. In addition, there is a centerless grinding machine that uses a similar centerless grinding principle for grinding cylindrical workpieces.
1. The automatic grinding machine is also a high-speed grinding machine and a precision grinding machine. The belt is made of abrasive cloth, and the electric appliance is sprayed with Japanese and spring, Fuji, and the whole machine. The color is the color of the computer.
2. The guide rail is a Taiwan linear guide.
3, the scraping rubber adopts the card lock design, which can adjust the deformation scraping rubber to ensure the grinding quality.
4. This automatic grinding machine, high-speed grinding machine, precision grinding machine can be used for mechanical scraper and manual scraper grinding.
5, special grinding wheel design, the abrasive cloth belt has no pressure, the squeegee is not deformed, no corrugation phenomenon, to ensure the grinding precision.
6, grinding angle to match the performance of various special printing.
7. The grinding machine is equipped with a dust washing device, which can reduce industrial pollution and is beneficial to the health of the staff and the maintenance of the equipment.
8, automatic grinding machine, high-speed grinding machine, precision grinding machine is easy to operate, no professional technology can be operated.
Second, the 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, the grinding stage is rotated at a high speed in the beginning stage, the grinding speed is rotated at a constant stage in the official stage, and the grinding speed is reduced in the end stage, 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).
Introduction:
Broadly speaking,normal White Garlic which has 4-7cloves,with white papery-skin.with the characteristics of pure flavor,strong aroma,crsipy taste,rich nutrition,very popular in the markets
More knowledge:
The bulb of garlic,an allium plant in the lily family.with the pungent flavor and spicy taste.spherical shape with a diameter of 3-6.5cm. The surface is covered with white and papery-skin.
The top is slightly pointed, with residual scape in the middle,many fibrous root marks at the base. The bulbous valve is slightly ovoid, with a membranous outer skin, slightly pointed at the apex, and an arcuate bulge on one side.
Specification:
1.Brand:Changrong
2.Variety:Liliaceous Vegetables
3.Color:Pure white/Normal white
Normal White Garlic,Dehydrated Normal White Garlic,Dried 5Cm Normal White Garlic,Organic Normal White Garlic
shandong changrong international trade co.,ltd. , https://www.changronggarliccn.com