SU1255405A1 - Method of burnishing components - Google Patents

Description

I

The invention relates to the field of surface plastic deformation and can be used in the processing of cylindrical parts with a variable cross-section and a wall thickness of 0.5-2 mm.

The purpose of the invention is to improve the quality of parts with variable cross-section by reducing its distortion.

The drawing schematically shows a device that implements the proposed method.

The tool ball 1 is brought, before contact with the workpiece surface 2, through the concentrator 3 of ultrasonic vibrations is loaded with a static load, the value of which is determined from the ratio

P (0.0016 - 0.002), where P is a static load;

 - diameter of the instrument ball;

Hg - the hardness of the part, then turn on the ultrasonic generator 4, together with the ball 1 ultrasound. Editor 0.10 rk

.. d .. aiii-h.

Order 4762/17

Compiled by Yu, Kurbatov

Tehred L, Serdyukova. Corrector L. Patay

Circulation 740 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Proektna,

 five

12554052

radial oscillations. Part 2 is set to rotate, and the ball is set to axial flow, while using the potentiometer 5 and block 6, the output power of the ultrasonic generator 4 is changed, thereby changing the atmosphere of the ultrasonic vibrations from maximum to minimum, maintaining the ratio:

j

(0.16 - 0.18)

-O L

. with

I

 f

where A is the amplitude of ultrasonic vibrations;

P is the density of the material details; C is the velocity of longitudinal vibrations;

residual stress; t is the depth of the hardened layer; f is the oscillation frequency. Processing in this way reduces the distortion of parts with variable cross sections.

Claims (1)

METHOD OF SURFACE PLASTIC DEFORMATION OF PARTS, in which a constant static load is applied to the tool, it is given ultrasonic vibrations in the radial direction and moved along the surface to be machined, characterized in that, in order to improve the quality of parts with a variable cross section, the vibration amplitude of the tool is reduced from maximum to minimum , and the magnitude of the static load and the amplitude of the oscillations of the tool is selected from the relations P = (0.0016 - 0.002) H _t d A =] (0.16 - 0.18) “ ^{£ Г} - 'where Р is the static load; - diameter of the tool ball; H _s - hardness of parts; A is the amplitude of ultrasonic vibrations; P is the density of the material of the part; C is the velocity of longitudinal vibrations <g; b _Ost - residual stress; C is the thickness of the section of the part; f is the oscillation frequency of the tool. 9 ^^ Nd ζπ ΟΊ About sl 1 1255 '