RU2613242C2 - Method of processing shafts with equiaxial outline by internally cutting milling cutter with radial structural feed - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: method involves using an internally cutting milling cutter with radial structural feed, the mean radius of which is larger than the mean radius of the shaft by at least the value of the double eccentricity of the shaft, imparting rotation to the internally cutting milling cutter and the processed shaft, herewith the shaft and the internally cutting milling cutter RPM are set as identical, the shaft and the internally cutting milling cutter rotations feature identical direction, the shaft and the internally cutting milling cutter axes are arranged in parallel to each other, profile of the internally cutting milling cutter has an equiaxial outline, the number of vertices of which and the value of eccentricity equals to those of the processed shaft.

EFFECT: provided is higher quality of processed surfaces.

1 cl, 1 dwg

Description

The method of processing shafts with an equiaxed contour relates to the field of metal working and can be used in the processing of profile shafts with an equiaxed contour.

A known method of processing shafts with equiaxial contour, which uses an end mill, which consists in the fact that:

- the rotational speed of the shaft and the rotational speed of the cutter are equal, and the movements of the shaft and the cutter are different in direction;

- the axis of the cutter and the shaft are perpendicular to each other [RF Patent No. 1033317, IPC V23C 5/06].

The disadvantage of this method is the inability to trim adjacent sections of the shaft surfaces and the complexity of processing short sections and neck shafts with an equiaxed contour.

Also, for processing shafts with an equiaxial contour, there is a known method of processing shafts with an equiaxial contour, comprising communicating to the mill and the machined rotation shaft with the same frequency, characterized in that they use a disk mill whose profile is made with an equiaxial contour, the number of vertices and the amount of eccentricity of which are equal to the number of vertices and the magnitude of the eccentricity of the machined shaft, while the axis of the mill and the machined shaft in the processing process are set in parallel, and the rotation of the mill is carried out in the same ovom with a machined shaft direction [RF Patent No. 2516156, IPC V23C 3/08].

The disadvantage of this method is the increase in the size of the equiaxed contour of the used cutters due to the high demands on the quality of processing.

The objective of the method is to improve the quality of the machined surface while maintaining the size of the producing surface used in the previous method milling cutters with a radial structural feed having an equiaxed contour.

This object is achieved in that this method includes the use of a female milling cutter with a radial structural feed, the average radius of which is greater than the average shaft radius by at least double the shaft eccentricity, communication between the female milling cutter and the rotary shaft being processed, and the shaft rotation frequency and the rotational speed of the female milling cutter set the same, the direction of rotation of the shaft and the female milling cutter are the same in direction, the axis of the shaft and the female milling cutter are parallel to relative to each other, the profile of the enclosing cutter has an equiaxed contour, the number of vertices of which and the magnitude of the eccentricity are equal to the number of vertices and the magnitude of the eccentricity of the work shaft.

For example, a profile shaft with the number of faces 3, an average radius of 20 mm and an eccentricity of 0.63 mm will be machined with a milling cutter with the number of faces 3, with an average radius of 80 mm.

In FIG. 1 shows a method of processing shafts with an equiaxial contour enclosing a mill with a radial structural feed.

The female milling cutter with a radial structural feed 1 having a producing surface 2 is informed of a movement that is the same in the direction of rotation of the shaft 3 having the producing surface 4, and the axes of the female milling cutter and the shaft are parallel to each other. In this case, the milling cutter 1 is reported with a rotational speed t _f equal to the rotational speed of the shaft t _v , and the profile of the milling cutter 1 has an equiaxed contour, the number of vertices of which and the eccentricity are equal to the number of vertices and the eccentricity of the machined shaft 3, the teeth of the milling cutter 1 have an internal arrangement , and the center distance a _w is defined as the difference between the average cutter radius and the average shaft radius.

The method of processing shafts with an equiaxed contour of a disk mill will improve the quality of the machined surfaces while maintaining the dimensions of the producing surface of the mill used in the previous method with a radial structural feed having an equilibrium contour.

Claims (1)

A method of treating shafts with an equiaxial contour with a radial constructive cutter, comprising communicating to the mill and the rotational shaft being machined, wherein the shaft speed and the rotational speed of the mill are set equal for the same directions of rotation of the shaft and the mill, the shaft axis and the mill are parallel to each other, the profile of the cutter is made in the form of an equiaxial contour, the number of vertices of which and the magnitude of the eccentricity are equal to the number of vertices and the magnitude of the eccentricity of the machined shaft, I distinguish Use a female milling cutter with an internal tooth arrangement, with the average milling cutter radius greater than the average shaft radius by at least double shaft eccentricity, and the shaft and milling cutter with a center distance equal to the difference between the average milling cutter radius and the average shaft radius .

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