SU768650A1 - Machine for making smooth beads - Google Patents

Description

one

The invention relates to the field of machining of hard and brittle materials, namely, equipment for making smooth beads.

A known machine for making smooth beads includes a frame and a bunker-loading device fixed on it, a three-position rotary table with loading and working positions and power heads with cutting tools AND

However, this machine has a low productivity due to the additional time spent on auxiliary operations.

The closest in technical essence and the achieved result is a machine comprising a frame and a loading device fixed on it, a multi-position rotary table with loading and working positions, aggregate power heads with conical mandrels fixed in their spindles and transverse supports with, shaped holders incisors.

The disadvantage of this machine is the low utilization of raw materials due to the impossibility of making an elliptical-shaped bead.

The purpose of the invention is to increase the use of raw materials and increase productivity.

This is achieved by the fact that the machine for making smooth beads, including a frame and a loading device fixed on it, a multi-position rotary table with loading and working positions, aggregate power heads with conical mandrels fixed in their spindles, and cross supports with holders 5. carotid incisors, equipped with rotating stops installed with coaxially power heads with cylindrical mandrels and a bead removal mechanism located between the last working and loading positions, and skids are mounted in rotating stops with the possibility of axial movement, and the mechanism for removing beads can be made in the form of two shoulders

25 levers interacting with a fixed cam and a cylindrical mandrel.

This embodiment of the machine provides for the manufacture of smooth beads of ellipsoid shape, which increases the utilization rate of raw materials and productivity due to the mechanization of the removal of beads from the machine.

FIG. 1 is a diagram of the proposed machine; in fig. 2 - profile of the beads to be processed.

The machine contains a three-position rotary table 1, on which three rotating stops 2 are mounted around the circumference with an axially movable cylindrical mandrel 3 interacting through a double-arm lever 4 with a non-rotating arm. The cam 5 for removing the machined beads from the mandrel 3. On the fixed table 6 coaxially with the stop 2 and on the working positions mounted aggregate power heads 7, the spindle 8 of which is fixed in the axially movable quill. A spindle 3 is fixed to a conical mandrel 9 for positioning the workpiece at its circumference. Perpendicular to the axis of the stops 2 and the power heads 7, there are mounted calipers 10 with shaped cutter holders, 11. On the table 6 at the loading position, a magazine 12 is mounted for blanks coming through the tray 13 from the bunker-loading device (not shown). For periodic supply of blanks from store 12 to the mandrel 3, a sliding loading device 14 is provided.

Between the second, working and loading position of the table 6, a tray 15 is mounted with a receiving window 16 for directing the processed beads to the drive located below the window 16. Under the tables 1 and 6, an actuator is mounted to ensure that the machine operates according to the technological cycle. . .. The proposed machine works as follows.

During the standing of table 1 at the loading position from the magazine 12 gate-type boot 1 1 by device 14, the bead blank is put on the cylindrical law 3 of the rotating stop 2 so that the larger diameter of the tapered hole of the workpiece is located on the outside with respect to the stop 2. After this, table 1 turns counterclockwise one third of the turn of turn and. is fixed so that the stop 2 is located coaxially with the aggregate power head 7.

At the first working position, the pinhole of the aggregate power head 7 with the rotating spindle 8 is moved in the direction towards the rotating stop 2, while the conical mandrel 9 falls into the central conical opening of the workpiece, bases it, presses the workpiece to the rotating stop 2, and also moves the cylindrical in the axial direction the mandrel 3 inside the stop 2.. After this, the shaped cutter 11 is moved to the workpiece and a half of the bead profile is machined, cut 768650

placed closer to the stop 2. After turning the said half of the bead, the cutter and the quill of the power head 7 with the spindle 6 and the conical mandrel 9 are retracted under the influence of a spring (not shown), fixed under the table 1 and interlocking with the lever 4. After This table 1 is turned counterclockwise one third of a turn, i.e. the workpiece arrives at the second working position, at which the second half of the bead is turned in the same way as at the first working position. . .

After turning the beads on the second working position, table 1 is turned one third more counter-clockwise, while the double-arm lever 4, interacting with the stationary cam 5, moves the cylindrical mandrel 3 into the stop 2, as a result of which the bead is removed from the mandrel 3 and gets on the tray 15, and from it - into the window 16 and into the bead drive.

The moment of friction between the conical mandrel 9 and the conical surface of the opening of the bead blank, as shown by the test models, exceeds by its magnitude the moment caused by the cutting force when turning with a shaped cutter with a half profile.

Claims (2)

Invention Formula 1, A machine for making smooth beads, including a frame and a loading device attached to it, a multi-position rotary table with loading and working positions, aggregate spindle heads with conical supports fixed in their spindles and transverse supports with shaped holders, different By the fact that, in order to increase the utilization of raw materials and increase productivity, the machine is equipped with rotating stops with cylindrical mandrels and mechanism ma beads disposed between the last and the loading work numerals, and cylindrical mandrel mounted in rotating the abutments for axial turn-scheni .. 2. The machine according to claim 1, of which the removal mechanism was made in the form of a two-arm lever, interacting with a fixed cam and a cylindrical mandrel. Sources of information taken into account in the examination 1. USSR Author's Certificate 5 No. 41-0956, cl. B 28 O 5/02, 1972.