In the field of mechanical processing and simple for roughing and finishing two. Rough machining is refers to the general machine tools open crude or processed to free tolerance range, no requirement of processing surface. Finishing is refers to machining parts to precise dimensional tolerances, the use of precision machining equipment, special processing requirements. Machining line, how to improve the machining precision. It is understood, about the problem is many friends in the industry are of particular concern, here's a look at machinery processing factory of machining accuracy basically tells!
1, machinery processing industry, processing precision is refers to the related work after the completion of processing is including the size, geometry and mutual position of the surface such as parameters of the actual value and pre design should have the ideal geometry parameters of demand than the degree of correspondence; machining accuracy usually include dimensional accuracy, shape accuracy and position accuracy of the content, size precision to limit the scope of processing surface and the reference dimension error, shape accuracy is used to limit the processing surface and the macroscopic geometry error, position accuracy is used to limit the processing surface and the base standard of parallelism, verticality, coaxial degree of position deviation of.
2, the impact of different factors in the process due to the performance of the equipment, technology, production conditions, the relevant parts of processing machinery in its size, shape and surface mutual parameters of position and ideal always exists certain deviation, in numerical usually use the size of the machining error to represent machining accuracy. Parts of the machining accuracy and surface quality of machining quality, is the basis of mechanical product assembly quality assurance, the size of the machining error reflects the level of machining accuracy.
3, while machining may be zero error, but some errors of the machining process is completely through the technical reform and rigorous processing methods to avoid. Especially now, people have increasingly demanding on machining accuracy, how to improve the processing precision of machine into the sudden crack problems.
4. In order to reduce the errors of mechanical process, carries on the analysis on the error of the original error generated, according to the different situation to cause the main original error of machining error to take different measures. Drawings processing multi-faceted consideration is the most basic. A reasonable machining process flow process, must be very precise and considerations of consciousness inside. Processing error is reduced to a minimum.
5, the geometric accuracy of the best efforts to enhance the products processing machinery used in machine tools, fixtures and gages and other components and the system process because of the heat, the deformation caused by cutting force and internal force of control belong to means to reduce the original error of the precision parts processing, in order to reduce the original error should make every effort to enhance the rigidity and accuracy of precision machine tools. In addition to two most cleverly method: transfer the original error and error compensation method.
6, shift the original error, essence is to the original error from the error sensitive directions transferred to non error sensitive directions. Various original errors reflected in the machining error and do a direct relationship on the error sensitive directions. If in the process to try to the original error transfer to machining error of non sensitive direction, can greatly improve the machining precision.
7, the processing system of some of the original error can be taken to control the influence of machining error of the method of error compensation; error compensation is to artificially create a new original error, thus compensation or offset the original process system inherent in the original error to achieve reduction of the machining error, the purpose of improving the processing precision.