Analysis Of The Grinding Operation

The grinding can be used for processing a variety of metallic and nonmetallic materials, processing of the surface shape of the plane, the outer cylinder and the cone surface, convex, concave spherical, thread, and the tooth surface and other surface. Machining accuracy up to the IT5 01, the surface roughness up to R 0.63 ~ 0.01 micron.

Grinding methods generally can be divided into three types of wetland research, stem research and semi-research. wetland research: also known as deposited sand grinding, liquid abrasive continuous filling or coating the surface of the grinding, abrasive constantly sliding between the workpiece and the lapping tool and rolling to form a cutting movement. wetland research is generally used for rough grinding, with the micronized abrasive coarse granularity of W7. dry research: also known as embedded sand grinding, abrasive uniform pressure embedded in the surface layer of the lapping tool, grinding, only the surface of the lapping tool is coated with a small amount of stearic acid mixed fat and other supporting material. Dry research commonly used in precision grinding, the micronized abrasive fine grain size in of W7. semi-research: similar wetland research, with abrasive paste abrasive paste. The grinding can use the manual is also available on the grinding machine. Before the workpiece in grinding with other processing methods required to obtain a higher pre-processing accuracy, to stay the grinding margin is generally 5 to 30 microns.

Research with the workpiece grinding forming tools, but it is also the carrier of abrasive hardness should be lower than the hardness of the workpiece, but also a certain degree of wear resistance, commonly made of gray cast iron. Wetland research study with the microstructure of ferrite-based; dry with a research study, while a uniform and fine pearlite matrix. Research should have sufficient rigidity, have a high geometric accuracy of its work surface. With research by cutting and wear during the grinding process, such as operating properly, its accuracy is also available to improve workpiece machining accuracy can be higher than the original research with accuracy.Correctly handle the grinding trajectory is an important condition to improve grinding quality. In the plane grinding, general requirements: workpiece relative research with the movement to try to ensure that the workpiece grinding trip of similar length; workpiece trajectory evenly throughout the study with the surface, in order to facilitate research with uniform wear; sports track curvature change, in order to ensure smooth movement of the workpiece; The workpiece at any point along the trajectory to avoid premature periodically repeated. In order to reduce the cutting heat, grinding is usually in the low-voltage low-speed conditions. Rough study of the pressure of not more than 0.3 MPa, the lapping pressure is generally 0.03 to 0.05 MPa. Rough research speed is generally 20 to 120 m / min, lapping speed is generally 10 to 30 m / min.

Co-ordination of the workpiece is often used with the research method. With research, the two workpiece first need to go through a single piece grinding join between the two workpieces with surface abrasive, the two workpiece each other with, hinder precise co-ordination with research to eliminate microscopic peaks Division, the mating surfaces coincide with each other.

With its high quality products such as Artificial sand maker, Impact crushing machine, Sand washing machine, Classifier, Henan Hongxing mining machinery Co.Ltd has ascended in the front rank of the world in the exporting of mining equipments.

by: nicole

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