RU1807930C - Finishing-strengthening treatment tool - Google Patents

Abstract

Usage: surface plastic deformation, hardening processing of non-rigid machine parts. SUMMARY OF THE INVENTION: the tool comprises a body of non-magnetic material, an annular chamber open in the direction from the longitudinal axis of the instrument to the periphery, deforming elements mounted in the annular chamber with the possibility of spatial spatial oscillatory movements, cheeks of magnetic material. The peripheral surface of the cheeks forming the annular chamber is made according to a periodic closed curve with an amplitude equal to the height of the annular chamber and a half-period exceeding the size of the deforming elements. Inserts of non-magnetic material are installed in the hollows of the cheeks. The magnetic field source installed in the annular chamber is made in the form of a permanent magnet with axial magnetization. The tool contains an additional ring magnet with axial magnetization. The peripheral surface of the permanent ring magnets is made according to a periodic closed curve similar to a periodic curve restricting the profile of the cheeks. The angular arrangement of magnets and cheeks is identical. The magnets are mounted on the outer ends of the cheeks, coaxial to the housing, and facing the camera with opposite poles. Zil. ate with

Description

The invention relates to surface plastic deformation and can be used for hardening machining of openings of non-rigid machine parts. . .

The purpose of the invention is to improve the quality of the treated surface, to increase the size of the meso-holding holes formed on the surface of the part.

In FIG. 1 shows the proposed tool, General view; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - section bB in FIG. 1,

The tool contains a housing 1 of non-magnetic material, an annular chamber 2,

open in the direction from the longitudinal axis 3 of the tool to the periphery, deforming elements 4 installed in the annular chamber 2 with the possibility of spatial oscillatory movements (Fig. 1), cheeks 5, 6 of magnetic material forming the annular chamber 2, the peripheral surface 7 (Fig. 2) which are made along a periodic closed curve with an amplitude equal to the height H of the annular chamber 2 and a half-period T / 2 exceeding the size d of the deforming elements 4, inserts 8 of non-magnetic material installed in the depressions io00

about vj

about

00 about

With

the peripheral surface 7 of the cheeks 5, 6 (Fig. 2), the annular permanent magnetite 9 with axial magnetization. The tool is equipped with an additional annular magnet 10 with axial magnetization. The peripheral surface 11 (Fig. 3) of the permanent ring magnets 9, 10 is made according to a periodic closed curve similar to a periodic closed curve 7 of the profile of the cheeks 5, 6. The angular arrangement of the magnets 9, 10 and the cheeks 5, 6 is identical (the tips of the magnets 9.10 and the cheeks 5, 6 are located opposite each other) and the magnets 9, 10 are facing the annular chamber 2 with opposite poles. Magnets 9, 10 are mounted on the outer ends 12, 13 of the cheeks 5, 6, respectively, coaxially with the axis 3 of the tool rotor.

Part 14 is installed in the chuck, and the rotor 1 of the tool in the spindle 15 of the machine. The deforming elements 4 are introduced into the cavity of the hole of the workpiece, impart rotation to the rotor and move the tool along the surface to be machined. Under the action of the magnetic field from the magnets 9, 10, the deforming elements 4 are accelerated in the circumferential direction of the annular chamber 2. Since the peripheral surface of the magnets 9, 10 and the surface 7 of the jaws 5, 6 are made along an identical closed periodic curve, the magnetic field lines of the poles of the magnets 9, 16 are closed (maximally concentrated) along a periodic closed curve. The maximum magnetic field strength is therefore also located along a periodic closed curve. Moving in the circumferential direction of the annular chamber 2, the deforming elements 4 are pulled into the region of maximum magnetic field strength, and therefore acquire a trajectory of motion c. in the form of a periodic closed curve, periodically interact with the workpiece surface, forming a moon-shaped profile on it. Since the length of the magnetic flux (magnetic field lines) is reduced — the length of the magnetic flux becomes equal to the width of the annular chamber of the tool (in the prototype tool, the length of the magnetic flux is equal to the sum of the height of the annular chamber and the width of the annular chamber), the magnetic dispersion is also reduced flow. In this regard, the force of magnetic action on the deforming elements 4 is increased, which provides an increase in the force action of the deforming elements 4 on the surface to be treated. Dimensions

May, the hollow holes formed on the surface of the part increase, which improves the quality of processing.

Example. The processing of the sleeve on the machine 16K20FZ.

The material of the sleeve is MF 12. The processing diameter is 120 mm; processing length 100 mm; wall thickness 3 mm.

Balls of 12 mm were used as deforming elements (ШХ 15, НЯСе 60-62). The width of the annular chamber of the instrument is 13 mm. The height of the annular chamber is 18 mm. The amplitude of the periodic profile

magnets and cheeks 20 mm. The number of vertices of the periodic profile is 3 pcs. The half-period of the periodic profile of the cheeks and magnets is 25 mm. Material of SmCos magnets. Magnet Dimensions (Dxclxh):

110x30x15 mm. The magnitude of the magnetic induction of 0.6 T.

Processing Modes. Tool rotation speed 1-4 m / s; axial feed of the tool 400-800 mm / min. Cooling is an industrial oil.

The largest and smallest axes of the ellipse and the penetration depth of the metal base were 4x1.8x1.2 mm.

The use of the proposed tool makes it possible to improve the quality of the machined surfaces, as it provides an increase in the sizes of oil-holding holes formed on the surface of the part.

Claims (1)

SUMMARY OF THE INVENTION A hardening finishing tool comprising a housing, cheeks forming an annular chamber open in direction from the longitudinal axis of the tool to the periphery, deforming elements installed in the annular chamber with the possibility of spatial oscillatory movements, source magnetic field, characterized in that, in order to improve the quality of the treated surfaces, increase the size of the oil-holding holes formed on the treated surface due to To reduce the scattering of the magnetic flux and increase the force acting on the deforming elements, it is equipped with an additional source of magnetic field in the form of a permanent magnet with an axial magnetization, the cheeks are made of magnetic material with a peripheral part bounded by a closed curve of a periodic profile with an amplitude equal to the height of the annular chamber, and a half-period, exceeding the size of deforming elements, and inserts of non-magnetic material installed in the hollows of the cheeks, permanent ring magnets are installed one at a time from the external end face at the poles. and are made with a peripheral surface bounded by a closed periodic curve similar to a periodic curve bounding the surface of the cheeks, coaxial with the body, is the surface of the cheeks, the angularly distributed in the annular chamber, the opposite arrangement of magnets and cheeks being identical. at the poles. and are made with a peripheral surface bounded by a closed periodic curve similar to a periodic curve bounding