Heavy type cutting rotary turning and milling composite blade

Abstract

A blade is mainly applied to the field of heavy type cutting, and the problems that during heavy type machining of large special-shaped pieces, since the cutting parameters are large and the machinedcomponent surface state is complex, the blade is likely to vibrate, and failures happen need to be solved. For the large special-shaped piece machining complex work condition, a heavy type cutting rotary turning and milling composite blade is developed and designed. The blade is provided with a linear cutting edge and an arc cutting edge; and meanwhile, the large parameters during heavy type cutting are considered, so that negative chamfer is designed, and the cutting edge strength of the blade can be improved. Streamline protrusions and conical abrasion reducing protrusions are designed on the upper cutter face, and during machining, the functions that the cutting temperature is reduced and scrap rolling and discharging are assisted can be achieved, and meanwhile the anti-vibration capability of the blade is improved. An octangle groove and a set screw hole are designed in the geometric center of the blade, an annular heat dissipation groove is designed in the bottom, the blade and air contact area can be increased while cutting fluid is stored, the heat dissipation function is achieved during blade cutting, and meanwhile the blade strength is improved. The whole blade structure is complete, the production cost is low, and the heavy type cutting rotary turning and milling composite blade is suitable for being used for heavy type turning and milling machining.

Description

technical field [0001] The invention belongs to the technical field of cutting tools for heavy-duty cutting, in particular to an indexable turning-milling composite insert for heavy-duty cutting. Background technique [0002] With the development of the nuclear industry, shipbuilding and aerospace and other fields, the demand for large special-shaped parts such as nuclear power steam reactors, ship propeller blades and aerospace engine blades is becoming more and more stringent; most of the processing of these parts involves heavy-duty processing In the field of turning and milling, multiple tool changes are required when the processing method is changed, which is very complicated; in the process of processing, the cutting parameters are 5-10 times larger than ordinary cutting, and the type of load borne by the tool is more complicated, which is prone to failure and reduces the Processing efficiency; large special-shaped parts, such as the water chamber head of the nuclear p...

AI Technical Summary

Problems solved by technology

[0002] With the development of nuclear industry, shipbuilding and aerospace and other fields, the demand for large special-shaped parts such as nuclear power steam reactors, ship propeller blades and aerospace engine blades is becoming more and more stringent; the processing of these parts mostly involves heavy-duty processing In the field of turning and milling, multiple tool changes are required when the processing method is changed, which is very complicated; in the process of processing, the cutting parameters are 5-10 times larger than ordinary cutting, and the type of load borne by the tool is more complicated, which is prone to failure and reduces the Processing efficiency; large special-shaped parts, such as the water chamber head of the nuclear power steam reactor, are first forged as a whole during processing. The main shaft and the tool are prone to vibration loads, causing tool wear and damage and seriously reducing the machining accuracy; at the same time, considering that large-scale special-shaped parts are mostly made of high-strength steel materials, under heavy-duty machining with large cutting parameters, the tool is subjected to variable frequency during cutting in and out. Due to the action of mechanical load and thermal load, the accumulation of cutting heat will cause the tool to be bonded and damaged, which will reduce the tool life; the chips generated during heavy machining are not easy to break, and they are easy to gather on the rake face of the tool, which will affect the rake face of the tool in the subsequent processing. Cause damage, increase cutting resistance, reduce tool life

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