RU2465148C1 - Ultrasound reaming head - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to finishing reamers. Proposed head comprises porting balls arranged in separator to run therein, between two ball bearing housings fitted on axle with set nut fitted on its end to clamp the spring thrusting against cover. Note here that magnetostrictive hollow waveguide with taper section is fitted on rod to displace thereon while porting balls arranged in separator are fitted on waveguide taper section and clamped between two thrust bearings abutting against bushes clamped by nut. Note here that said magnetostrictive waveguide is connected with ultrasound oscillation generator.

EFFECT: higher surface finish.

1 dwg

Description

 The claimed invention relates to the field of engineering, and in particular to devices for the precise processing of holes.

A device for finishing and hardening processing of surfaces of parts (see RF patent 2130086 dated 10.23.1997), containing an ultrasonic transducer with a waveguide, at the end of which is made a coaxial socket with steel balls placed in it, forming a working medium for surface treatment of the part, and technological a plate mounted perpendicular to the waveguide with a gap relative to its end with the possibility of fixing it to the workpiece. The device is equipped with a punch holder for fixing the workpiece, installed in the technological plate by coaxial threading to the waveguide so that the steel balls form a tightly packed working medium between the walls of the punch, the surface of the part and the walls of the socket, which serves simultaneously as the punch matrix, while the punch holder is equipped with a lock nut with slotted keys, as well as a device for controlling the static force on the working medium.

The known device has such disadvantages as the lack of guaranteed dimensional processing due to the random movement of the balls.

A device is known for ultrasonic processing of surfaces of parts (see RF patent 2291044 dated 04/20/2005), comprising an acoustic system including a removable ultrasound transducer, the end of which is made in the form of a working tip, mounted in a housing with a tide to attach the device to the machine, a magnetostrictive transducer and connected with the last hub, and it is equipped with a connecting element fixed to the end side of the hub in the form of a resonant waveguide with holes made along its a single axis for placement in one of them, depending on a given class of surface roughness of the part, a removable ultrasound emitter, which is made from the condition of ensuring operation in the mode of minimum amplitudes of displacements of traveling waves, and the end face of the resonant waveguide is made from the condition of ensuring the use of load to generate energy of traveling waves in the said waveguide, while one of these holes is located in the nodal plane of the idle mode of the resonant waveguide, and the other holes are located s on each side of said nodal plane.

The known device has such disadvantages as intense tool wear and limited performance, determined by the energy of the traveling wave of ultrasound.

As a prototype, a rolling head was adopted (see the reference book of a machine-building technologist. Edited by A.G. Kosilova and R.K. Meshcheryakova, M .: Mechanical Engineering, 1985. p. 389), containing balls fixed with a mounting nut in the separator with the possibility of rotation, and a shank for fixing it in the machine.

The known device has such a disadvantage as a poor surface finish of the holes.

The aim of the invention is to improve the surface finish of the holes.

This goal is achieved by the fact that in the ultrasonic rolling head containing rolling balls located in the separator with the possibility of rotation, which are located between two housings of ball bearings, mounted on a rod, at the end of which there is a mounting nut, compressing the spring, abutting against the cover, magnetostrictive waveguide having a conical part, mounted on the rod with the possibility of longitudinal movement, and the smoothing balls located in the separator, mounted on the conical part of the magnetostrictive and waveguide are clamped between two thrust bearings abutting of the sleeve, urging nut, the magnetostrictive waveguide connected to a generator of ultrasonic vibrations.

The ultrasonic rolling head in the context shown in figure 1.

The ultrasonic rolling head contains rolling balls 1 located in the separator 2 rotatably, which is located between two housings 3 of ball bearings 4, mounted on the rod 5, at the end of which there is a mounting nut 6, pressing spring 7, which abuts against the cover 8. Magnetostrictive a hollow waveguide 9 having a conical part is mounted on the rod 5 with the possibility of longitudinal movement, and the smoothing balls 10 are located in the separator 11, mounted on the conical part of the magnetostrictive waveguide 9, clamped between two thrust bearings 12, one of which rests in a spring sleeve 13, biases the nut 14, and the other - the sleeve 15. The magnetostrictive waveguide 9 is connected to a generator of ultrasonic vibrations, which in Figure 1 is not shown.

Ultrasonic roll head works as follows. When it rotates, the balls 1, acting on the walls of the hole being machined, compact them. The magnetostrictive waveguide 9, participating in longitudinal vibrational movements along the axis of the rod 5, spreads the balls 10 with an ultrasonic frequency with its conical part, as a result of which they periodically act on the walls of the hole being processed, increasing the cleanliness of its surface. The refracted wave passes through the balls 10 and creates an additional ultrasonic effect on the walls of the hole being processed.

The use of the claimed invention will improve the performance of the equipment and the quality of the surface treatment of the holes.

Claims (1)

An ultrasonic roll head containing roll balls arranged rotatably in the cage, which are located between two housings of ball bearings mounted on a rod, at the end of which a mounting nut is located, compresses a spring abutting against a cover, characterized in that the magnetostrictive hollow waveguide having the conical part is mounted on the rod with the possibility of longitudinal movement, and the smoothing balls located in the separator are mounted on the conical part of the magnetostrictive waveguide and clamped between two thrust bearings, abutting against bushings pressed by a nut, while the magnetostrictive waveguide is connected to an ultrasonic oscillation generator.