SU509342A1 - Cutter head - Google Patents

Description

 .. This invention relates to mechanical engineering.

namely, devices for machining annular grooves in the holes and the ends of pipes.

An automatic device for radial feed of a cutter is known, comprising a housing with a tool holder connected to a steering wheel by means of a feed nut and a gearing element system.

Such a device is difficult to manufacture and does not have sufficient rigidity.

A cutting head is proposed, the casing of which is made composite, one of its parts is connected with the spindle and has a radial groove in which the nipple with radial holes and a spring-loaded pusher supported on the roller in contact with the surface of the cone-eccentric washer mounted on the other fixed part housing and rigidly connected with the feed wheel, and with the steering wheel there is a ring on which the rail is attached to the rod, interacting through the pinion gear with the nipple, the radial holes of the nipple are communicated with the filled with channels in the moving part of the body, and

in the latter, plungers are brought in contact with the tool holder.

This embodiment of the head increases its rigidity.

Fig. 1 shows the cutter head, general.: C; c of fig. 2 is a section along the line A-A in FIG. one; in fig. 3 is a section along BB in FIG. 1; FIG. 4 is a section according to BB in FIG. 3 (position T); in fig. 5 is a section along BB in FIG. 3 (IT position).

Claims (1)

The cutting head consists of a housing 1, a tool holder 2 is mounted on the front part of the toolbox. In the middle part there is a through radial window in which a nipple 3 is placed with a spring loaded holder 4 fixed by a key 5. On the upper part (according to the drawing) 4 a roller 6 is installed, which is in contact under the action of the spring 7 with an inner washer of feedings 8. The feed washer fi is in threaded connection with feedstress 9, installed through ring 1O on the front groove of the middle part of the body i, When the ring 10 is connected to the glass 11, Usto tained at a predetermined 1trotochke sredaey ca Stn body 1, 11 has a glass window, through which the. the screws securing the half wheel to the steering wheel 13, PeitKa 14, which is in engagement with the spike 15, mounted on the nipple shank 3, are rigidly fixed on the movable ring 16 and fixed to the case 1 with a key 17. In the nipple & 3 pin yen radial holes intersecting its axial hole (Fig. 4). In these radial openings, the bypass valves 18 and 19 are installed, vaimo (acting with channels 2, made; in case 1 and fitted with plungers 20 and 21, in contact with the tool holder tabs 2, / the cutting head works as follows} The device, fastened with the tail part of the body 1 in the machine spindle, is installed in the center of the hole being machined. In the window the tool holders 2 fix the tool 22, which then comes into contact with the surface to be machined. At the same time, the nipple 3 and valve bypass 18 and 19 na ds in the positions G (Fig. 4). The steering wheel 13 controls the right hand (on the drawing) the city is fixed to a special fixed support standing on the machine, or held by the hand of the machine operator. set technologically necessary amount of feed per revolution, which is determined in the device by the value of the eccentricity and taper of the feed washer B, as well as the ratio of the diameters of the pusher 4 and the plungers 20 and 21, Then include the required number of revolutions of the spindle in the appropriate direction. At the same time, the braked gear 13 is braked and the feed washer 8 is braked by means of the bowl 11, and the equipped roller 6, rotating together with the housing 1, under the influence of the inner, cone-eccentric surface of the feed washer 8, completes the axial return-slip movement with the push rod 4. Consequently, the slurry under the influence of a push; 1 .4 from the left (according to the drawing) part of the channel I. (FIG. 4) passes through ne; the repulsion valves 18 and 19 to the right part 2 and, pressing pressure on; Plouige {20, will move the tool holder 2 with a chisel 22 from the center, i.e., it will make a chisel plunge into the metal. At this depth-i on the incision of the cutter. In the metal depends on the selected feed per revolution and the number of revolutions. To return the tool holder 2 with the cutter 22 to the initial position, it is necessary to pull the gear wheel 13. slide to the left (according to the drawing). Next, the ring 16 will move together with the steering wheel 13 and the rail 14 will turn the gear wheel 15 together with the nipple, aligning the relief valves 18 and 19 with channel 1, in the Jf position (Fig. 5), As a result, the interaction of all the links of the device will be opposite to the described movement) during the working stroke. Claims of the invention: A cutter head, mounted on a mounting plate and provided with a tool holder that is radially movable in its body and connected via a feed mechanism to the feed wheel, which in order to increase stiffness, the head body is made integral, one of its parts is connected with a spindle and has a radial groove,; in which is placed a nipple with radial holes and under a spring-loaded pusher, bearing a roller at the end, in contact with the surface of a cone-eccentric washer mounted on the other. part of the body, and rigidly connected with (: the turval of innings, and connected to the steering wheel, and the ring on which the rail was rigidly fixed, interacting through the pinion gear with the nipple, the radial holes of the nipple communicated with the channels made in the movable part of the body, and in the latter, plugs are placed in contact with the tool holder. HELL 20 21 B-BifJo meHusi} Bb ig.z vv {шshshenie