Large-arc taper spherical milling cutter

Abstract

According to the technical scheme, the large-arc taper spherical milling cutter comprises a cutter handle and a cutter edge which are integrated, the cutter edge comprises ball-head cutter edges and large-arc side cutter edges, a chip containing groove is formed between every two adjacent ball-head cutter edges, a chip discharging groove is formed between every two adjacent large-arc side cutter edges, and the chip containing grooves are communicated with the chip discharging grooves. The front end of the large arc side edge is tangent to the ball head edge, the rear end of the large arc side edge is tangent to the cutter handle, and the radius of the large arc side edge is R800mm-R1000mm. The method aims at deep cavity machining, and the cutting efficiency can be effectively improved.

Description

technical field [0001] The invention relates to a machining cutting tool, in particular to a large arc taper spherical milling cutter. Background technique [0002] In machining, spherical milling cutters are required for deep cavity machining of many workpieces. Especially for stainless steel impellers, which are mainly used in steam turbines, water turbines, and industrial blowers. The impellers are mainly thin-walled and deep cavities. Vibration problems are prone to occur during clamping and cutting, resulting in tool vibration during processing. Tool chipping, or the problem of workpiece deformation during processing. In addition, the CR content of stainless steel is relatively high, reaching more than 13%, which is prone to sticky chips and surface hardening during the cutting process, resulting in rapid failure of the tool edge and short cutting life of the tool, which is a difficult-to-machine material. The conventionally designed carbide ball cutter cannot match t...

AI Technical Summary

Problems solved by technology

Especially for stainless steel impellers, which are mainly used in steam turbines and water turbines, as well as industrial blowers. The impellers are mainly thin-walled parts with deep cavities. Vibration problems are prone to occur during clamping and cutting, resulting in tool vibration during processing. Tool chipping, or workpiece deformation during machining

In addition, the CR content of stainless steel is relatively high, reaching more than 13%. During the cutting process, chip sticking and surface hardening are prone to occur, resulting in rapid failure of the cutting edge and short cutting life of the cutting tool. It is a difficult-to-machine material.

Conventionally designed cemented carbide ball cutters cannot match the shape of the impeller in the process of processing deep cavities, resulting in the cutter not being able to process normally, or when the bottom of the workpiece needs to be processed, the overhang length of the cutter is relatively long, and the cutter Decreased rigidity causes tool chipping and shortens cutting life

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