SU794887A2 - Revolving cup-tip tool - Google Patents

Abstract

ROTATING BOWL CUTTER for auth. H ”552145, characterized in that, in order to consolidate the quality of the treated surface, on the axis on the side opposite to the chip-sharpening knife, a roller with a diameter equal to or smaller than the diameter of the knife, and a part of a circular ring in contact with the roller is installed on the holder, the chip breaking knife and the roller being rigidly mounted on the axis. .Fig.1 * ch1S

Description

The invention relates to the field of metalworking, mainly auth.St. No. 552145 described a rotary cutter provided with a chip-shaving knife, made in the form of a body of rotation, mounted on an axis at a distance from the side surface of the cutter, not exceeding the thickness of the chip lj. . This design does not provide high purity processing. The object of the invention is to increase the purity of the treatment. To this end, a roller with a diameter equal to or less than the blade diameter is placed at a smaller distance from the center of the cutter on the axis opposite the chip-breaking knife, and a part of a circular ring in contact with the roller is installed on the holder, the chip-shaving knife and the roller are installed on the axis hard. FIG. 1 shows the described cutter, side view; FIG. 2 is a view A of FIG. one; in fig. 3 shows the working part of the cutter with a knife and a roller mounted in pairs; FIG. 4 shows a roller and a knife made in one piece. The cutter consists of a cutting cup 1 mounted on the axis 2 of the cutter mounted on bearings in the holder 3 for rotation. On the end surface of the cup, which is the cutter's front surface, at a distance of 6 from the center of the cutter, a circular knife-disk 4 is installed. The cutting blade of the knife is located from the cutting edge of the cutter at a distance d not exceeding the area of contact of the chip with this surface and from face (front ps / cutter surface removed to a distance b, smaller than the thickness of the chip being removed. Knife 4 is rigidly mounted on axis 5, having the possibility of free rotation on trunnions 6 in the radial holes of the figured nut 7 fixed on axis 2 of cutter. Diametrically On the opposite side of the cup on the blade axis 5 at a distance fj from the center of the cutter, a roller 8 is rigidly mounted in contact with a part of the circular ring 9 fixed to the holder 72. 3. The roller 8 simultaneously serves as a counterweight to eliminate the cutter disbalance. Any meeting of the knife 4 with the part of the ring 9 should be made in relation to the ratio P, 6. The free rotation of the roller together with the axis is guaranteed when its contact with the front surface of the tool is eliminated. Therefore, the diameter of the roller must be equal to or less than the diameter of the knife. To produce smaller chips, knives and rollers can be mounted on axis 5 in pairs (Fig. 3) with the latter inward and rollers can be made in one piece with knives (Fig. 4). The cutter works as follows. When the cutter is installed at an angle relative to the workpiece, and turning on its rotation and feed movement, the cutter cup 1 of the cutter begins to rotate from interacting with the machined surface along with axis 2. The fig nut 7, axis 5, knife 4 and roller 8 rotate with it. 4, when moving planetary, encounters chips and cuts them. Under the action of contact with the chip during its separation, the knife, together with the axis 5, is additionally rotated on the trunnions in the holes of the figured nut at a certain angle. In order to prevent the blade of the blade from worn on the front surface of the cutter during its rotation, it is removed from the front surface by an amount less than the thickness of the chip being separated. When the knife approaches the chips for its separation, the roller 8, with its upper part, comes into contact with part of the circular ring 9 and the shaft 5, together with the knife and roller, begins to rotate in this way. that the speed of rotation of the knife Vg in the zone of contact with the chips is opposite to the speed of its planetary movement V and, moreover, it is directed towards the untreated surface (Fig. 2). The knife pulls the chips into the gap between its blade and the front surface of the cutter. When installing knives and rollers for free, the cutter works in a similar way. .

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Claims (1)

ROTATING CUP CUTTER on ed. N ”552145, due to the fact that, in order to improve the quality of the surface to be machined, a part of the circular ring contacting the roller is installed on the axis from the side opposite to the knife or the tool, and the chip-cutting knife and roller so fi