The method of the finishing milling

 

(57) Abstract:

The invention relates to mechanical engineering, in particular to the cutting process. Effect: improve the quality of the workpiece, the processing capacity, the expansion of technological capabilities. Is achieved by the fact that when fine milling in the direction of the working movement of the cutting edges of the cutter's axis tilt to the direction of milling in the direction of the output ends of the cutting edges. The speed milling can be increased with a corresponding decrease in the speed of the working movement of the edges, the reduced slope of the edges, and increased the angle of the axis of the cutter. 1 C.p. f-crystals, 2 Il.

The present invention relates to mechanical engineering, in particular to the cutting process.

Known (C. F. Beavers. Fundamentals of theory of metal cutting. M. the motor cycle", 1976, S. 66 - 74) the method of cylindrical milling cutter. The technological capabilities of its quality and performance is limited by the height of the unevenness of processing.

Known (and. with SU 1009646, 23 B C 3/00, 1983) method of milling end face of the body of rotation of a cylindrical milling cutter with an inclination to the axis of the cutter to the direction of milling. The drawback is the uneven slope of f is the Objective of the proposed method is the expansion of technological capabilities, simplifying, improving the quality and performance milling in the direction of the working movement of the cutting edges of the cutters with the tilt axis to the direction of milling.

The problem is solved by tilting axis in the direction of the output ends of the cutting edges, increasing speed milling with a corresponding decrease in the speed of the working movement of the edges, the angle of inclination and the increase of inclination of the cutter.

The method explain the diagram (Fig. 1 and 2), which marked the height of the cut plane, the angle of inclination of the cutting edges of the cutter, the angle of inclination of the axis of the cutter from the perpendicular to the direction of milling, the angle of inclination of the ridges cut by forming cutters, Sz- feeding speed S during rotation of the cutter tooth with velocity V, D is the diameter of the cutter.

From the diagrams it is obvious that with increasing angle of inclination of the cutting edges increases the angle of the crests of the cutting and decreases the distance H between them. To spur cutters H = K

On the basis of the scheme are:

< / BR>
The plus sign corresponds to the symbols on the diagram and corresponds to the inclination of the axis of the cutter in the direction of the output ends of the cutting edges. The sign "minus" means in the first bracket, the direction of velocity V in a reversed pattern with the visible usefulness of inclination of the axis of the cutter in the direction of the output ends of the cutting edges and its increase. Significant performance improvement is achieved by increasing the speed ratio S/V within their amount, not exceeding the normal cutting speed S + V Vn. When speed milling S, much greater speed V of rotation of the cutters, screw cutting edge becomes the source of the cut surface finish. The decrease in the slope of the edges reduces this danger. The best results in terms of performance, quality, simplicity, and expanding technological capabilities are achieved when milling at a speed several times greater speed of rotation of the spur cutters with a large tilt axis to the direction of milling. When V = 0, the method degenerates into the wide planing cutter with a small angle of its edges to the planing direction with speed S = Vn.

The method can be widely used for finish milling of surfaces.

1. The method of the finishing milling in the direction of the working movement of the cutting edges of the cutters with the tilt axis to the direction of milling, characterized in that the milled with an inclination to the axis of the cutter in the direction of the output ends of the cutting edges.

2. The method according to p. 1, characterized in that the milled more skorosti tilt axis of the cutter.

 

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