Method for machining bottom R of reverse taper end milling cutter

Abstract

The invention relates to a method for machining a bottom R of a reverse taper milling cutter. The method comprises the following steps of: 1) preparing a raw blank, namely leaving allowance in the directions of width and length of the milling cutter according to the requirement of a drawing of the reverse taper milling cutter, wherein in the integral appearance of the milling cutter, the front end is a cylinder and the rear end is a cone; 2) performing rough machining, namely 2.1) clamping by using a tip, and turning a front end face until light can be seen, so that the end face is used as a reference plane; 2.2) grinding the cylinder at the front end in a grinding mode, so that the diameter of an excircle is used as the diameter Rlarge of a large end; and 2.3) grinding a taper surface at the rear end in a grinding mode until the length of the cylinder is A; 3) cutting a formed grinding wheel by using a sample plate with the size which is the same as the bottom R; and 4) performing finish machining, namely allowing the formed grinding wheel to lean against two end corners of the reverse taper end milling cutter to ensure that a tangent point of a fillet coincides with an intersection point of the taper surface, so that the size requirement of the drawing can be ensured. By the method, the detection time and machining time are reduced greatly, and the production efficiency and quality of the machined products are improved.

Description

technical field [0001] The invention relates to a processing method for the midsole R of a reverse taper end mill, which is used for processing the midsole R of the reverse taper end mill. Background technique [0002] The reverse taper end mill with bottom R is a tool widely used in equipment manufacturing industries such as machinery, aviation and automobiles, such as figure 1 As shown, the structural feature of the reverse taper milling cutter product with bottom R is that the head of the single taper milling cutter has a tangential transition between the R value and the reverse taper. Usually, the R fillet is initially processed, and in the finishing process There will be an annealing effect in the process, which reduces the hardness of the tool, changes the internal structure of the tool, reduces the quality of the tool, and cannot meet the production requirements; another form of processing is that it is possible to quantitatively reserve the back taper during the turn...

AI Technical Summary

Problems solved by technology

[0002] The reverse taper end mill with bottom R is a tool widely used in equipment manufacturing industries such as machinery, aviation and automobiles, such as figure 1 As shown, the structural feature of the reverse taper milling cutter product with bottom R is that the head of the single taper milling cutter has a tangential transition between the R value and the reverse taper. Usually, the R fillet is initially processed, and in the finishing process There will be an annealing effect in the process, which reduces the hardness of the tool, changes the internal structure of the tool, reduces the quality of the tool, and cannot meet the production requirements; another form of processing is that it is possible to quantitatively reserve the back taper during the turning process of the rough machining process. The size value of the big end of the end mill brings a lot of troubles and hidden dangers to the quality of the finishing process, the efficiency is greatly reduced, and the quality of the product cannot be guaranteed

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