Machine manufacturers on the basic processing accuracy!
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.
- 上一篇:Matters needing attention in s 2016/5/19
- 下一篇:Factors affecting the surface 2016/5/9