SU1030143A1 - Method of grinding by abrasive belt - Google Patents

Abstract

THE METHOD OF GRINDING WITH AN ABRASIVE TAPE, in which it is continuously transferred from one drum to another and its oscillatory movements, is also distinguished by the fact that, in order to reduce the roughness of the treated surface due to a decrease in the extent and increase in the oscillation frequency of the tape, the tape is rewound oscillatory movements of the drummers.

Description

C

WITH

four;

with

This invention relates to a machine tool industry and relates to a belt grinding method.

. There is a known method of belt grinding, in which an abrasive belt located on a drum passes through a treatment area on an OR bed or a copier and is rewound to another jigsaw. Between the branches there is a drive link in the form of, for example, an eccentric, which, having a rotational movement, provides for the elongation of one of the branches of the tape with the possibility of shortening the other. Thus, during the rotation of the drive link, the abrasive tape located on the lodgment or copier 1 3 reciprocates.

The disadvantage of the method is that UH does not allow to obtain surfaces with a small roughness. It is impossible to eliminate this drawback by reducing the amplitude and increasing the oscillation frequency of the tape in the known method, since Kate's minimum amplitude of oscillation of the tape is limited to a narrow interval of 4-6 mm.

The purpose of the invention is to reduce the roughness of the treated surface by increasing the frequency and reducing the amplitude of vibrations of the tapes.

This goal is achieved in that, according to the method, the tape is rewound from the drum to another circular oscillating movements of the drums. .

YA

FIG. 1 is given a tape processing circuit} in FIG. 2 is a section A-A in FIG. one.

Tape 1 is wound on drums 2 and 3 and rests on rollers 4 and 5. Drums 2 and 3 are rigidly mounted on the drive shaft b. The tape 1 implements the machining of the part 7. The drum 2 is fixed by means of a key 8. The drum 3 is mounted on the shaft 6 freely. A stopper 9 in the form of a washer 9 with a screw is made to prevent the drum 3 from moving along the shaft b.

To ensure the tension of the abrasive belt 1 during operation, the drums 2 and 3 are connected by a spring 11.

The abrasive belt 1 is fixed on the drum 2- and rewound until the drum is filled, then it is thrown over the rollers 4 and 5 and fixed on the drum 3.

. Rollers 4 and 5 are mounted on the axle freely. A piece of workpiece 7 is placed between the rollers 4 and 5. Asynchronous motor can be used as a drive, connected according to a special scheme.

When the Gyfivod is turned on, the shaft b and the drum 2. perform circular oscillatory movements and discretely rotate, therefore the abrasive belt 1 moves back and forth and rewinds to the drum 3.

35 The proposed method allows machining parts with high surface purity (012 and simplify the device for performing this operation.

Claims (1)

(57 / ABRASIVE- GRINDING METHOD: NOA TAPE, in which it is continuously moved from one drum to another and its vibrational movements are reported, characterized in that, in order to reduce the roughness of the treated surface by reducing the amplitude and increasing the frequency vibrations of the tape, the tape is rewound with circular oscillatory movements of the drum - <nov.