What is the devolop tumor?
How to avoid any in precision parts processing machinery and equipment are made by the corresponding many parts have been assembled, precision parts processing needs a series of technological process, the process of machining
is not only need to get the purpose of the surface geometry, also need to ensure that the surface of the processed to meet the mechanics, optics, organization, composition, and physical aspects of requirements.
Methods of machining a part, every enterprise can adopt different processing methods, at the same time, the machining precision is also different, need according to the mechanical parts processing enterprises of machine tool equipment, as well as drawing on the specific requirement for selection.
The turning processing, for example, simple to describe.
Turning processing chip, not cracked or unit when turning the mechanical parts processing, if cracked chip formation, on the machining surface traces of cracked, processing surface roughness increases, the cutting force fluctuation is large;
If unit chip formation, indicates the chip on the surface of the shear stress exceeds the limit, the strength of the material crack runs through the entire chip thickness, the formation of a trapezoidal unit chip.
The fluctuation of cutting force is bigger, the precision parts processing surface roughness value is greater;
If the chip formation collapse, surface cutting material without plastic deformation causes a brittle crack, irregular fragmental chip formation, cutting force, and focus on the cutting edge, easy to damage the cutting tool.
In the process of precision machinery parts processing, chip morphology can be observed to determine the cutting conditions are appropriate, in processing plastic materials at the same time, if there is a cracked or unit chip, usable changing tool geometric angles, methods of cutting parameter, make the chip into a continuous chip.
Cars are not allowed to exist when the devolop tumor, the devolop tumor will make machined part surface roughness value increases, this is pure Turner when not allowed, can the measures: 1.
Speed control precision parts processing, using low or high cutting speed, avoid to produce the devolop tumor speed range.
Appropriate increase cutting tool rake Angle, and decrease the feed, improve the quality of surface grinding tool, choose good lubrication performance of cutting fluid, etc. , 3.
Plastic too much of a workpiece materials, cutting the plastic deformation is big, easy to produce the devolop tumor, therefore, before the processing materials for normalizing or conditioning can be treated, in order to improve the hardness and reduce the plastic, chip to inhibit tumor.
The above information is derived from the metal mechanical processing factory Xavier company in shenzhen.
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