A kind of grinding method of milling cutter for milling processing of titanium-based composite materials

Abstract

The invention discloses a grinding method of a milling cutter used for milling processing of titanium-based composite materials, which comprises step 1, inflating the air cavity of the grinding wheel; step 2, grinding the blade of the milling cutter; and step 3, absorbing the grinding heat of the milling cutter: the heat-conducting metal layer Quickly absorb frictional heat to prevent the formation of ultra-high temperature on the outer surface of the grinding wheel; step 4, inject the normal temperature or low temperature gas along the inner surface of the heat-conducting metal layer in an arc, and quickly dissipate the heat absorbed by the heat-conducting metal layer in the air cavity; Step 5, the gas temperature and pressure control in the air chamber: through the control of the intake flow, injection time, outlet flow and deflation time, the gas temperature and pressure in the air chamber are kept within the set range. The invention can effectively reduce the weight of the grinding wheel, and can increase the strength support of the grinding wheel shell. On the other hand, it can quickly absorb the heat generated by grinding, prevent the high temperature generated by grinding, and the rapid loss of abrasive grains, and prolong the grinding process. service life of the wheel.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a method for grinding a milling cutter used for milling titanium-based composite materials. Background technique [0002] Due to its excellent high temperature strength, high thermal stability, creep resistance, fatigue resistance, and corrosion resistance, titanium-based composites are widely used in the manufacture of aero-engines, such as compressor chambers, combustion chambers, turbine blades, turbine disks, etc. part. However, the excellent material properties have brought many difficulties to machining, making titanium-based composites a typical difficult-to-machine material. Milling is one of the main processing methods for processing these engine parts, and it is often used as the last process to ensure High machined surface quality. [0003] The milling cutter used in milling processing will have different degrees of wear on the main cutting edge and bottom edge a...

AI Technical Summary

Problems solved by technology

The dressing process of the grinding wheel during the grinding process inevitably increases the ineffective working time, which leads to a decrease in grinding efficiency. If the grinding efficiency is to be improved, it usually leads to a decrease in machining accuracy and poor surface quality

[0007] In addition, due to the high hardness of the milling cutter, it is easy to generate high temperature during the grinding process of the milling cutter blade, which intensifies the wear of the grinding tool and reduces the quality of the grinding surface of the milling cutter. This has always been a problem that has plagued people.

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