SU1202833A1 - Method of grinding wheel truing - Google Patents

Description

one

The invention relates to mechanical engineering and can be used in grinding parts from materials with an increased sensitivity to working conditions.

The purpose of the invention is to increase the durability of the grinding wheel due to the formation of a regular macrorelief on its working surface and.

FIG. 1 shows the editing scheme; in fig. 2 - geometrical parameters of the contact of the right w; his tool with grinding steep.

The right tool 1 with a convex working surface installed with an offset q relative to the axis of the grinding wheel 2 in the direction of its rotation is reported to move along the generatrix of the rotating grinding wheel with a feed rate D less than the value d of the working surface pad of the right tool, and the edit is instrument with the possibility of oscillations perpendicular to its axial line 00 with the frequency of natural oscillations specified in accordance with the expression

0 (N-),

where N is an integer (1,2,3 ...); -) - the frequency of rotation of the grinding wheel, Hz.

2028332

Before straightening, the right-hand tool is set offset from the radial direction by 5R,

d-a k

but

f

where R is the radius of the grinding wheel, mm;

d is the size of the platform on the working surface of the right instrument, mm;

D - transverse feeding of the right tool, mm / rev;

 - coefficient of resistance, kg / s;

50 — natural frequency of oscillations of the right-handed tool in the tangential direction, Hz;

k - tangential pressure when editing the right tool, N / mm.

Setting the tool's natural oscillations in the tangential direction and shifting its working tip by a quite specific value allows us to form a regular macrorelief on the working surface of the circle due to the stable self-oscillations of the right tool and, therefore, improve the cutting properties and durability of the abrasive tool during processing.

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F

FIG. g

VNIIPI Order 8362/17 Circulation 768 Subscription Branch ShSh Patent, Uzhgorod, Proektna St., 4

F

Claims (4)

METHOD FOR GRINDING A CIRCLE OF A GRINDING CIRCLE with a single-chip ruling tool, which is positioned with a displacement of its axial line relative to the radial direction and is moved along a generatrix of a circle with a feed rate per revolution of the wheel less than the size of the working surface area of the ruling tool in the feed direction, characterized in that, with In order to increase the durability of the circle due to the formation of a regular macrorelief on the working surface during editing, the tool is installed with the possibility of oscillations in the plane and rotation of the circle perpendicular to the axial line, while the frequency of natural vibrations of the instrument is set in accordance with the dependence v (N-1 in, where N is an integer (1, 2,3 ...); 3 - frequency of rotation of the grinding wheel, Hz, and the displacement of the axial line of the tool relative to the radial direction is chosen equal to where R is the radius of the grinding wheel, mm; d is the size of the area on the working surface of the ruling tool in the feed direction, mm; 4 - transverse tool feed, mm / rev circle; £ - coefficient of resistance of the oscillatory system, kg / s; ® ₀ is the natural frequency of oscillations of the ruling tool in the tangential direction, Hz; to - tangential pressure on the ruling tool when dressing, N / mm ² .