SU398741A1 - MECHANISM FOR TURNING THE BORING OR SIMILAR TOOLS - Google Patents

Description

one

The invention relates to a mechanism for turning a drilling tool or the like, a drilling tool, a cutting tool.

A mechanism is known for turning a drilling tool or the like, which has two interconnected between it and anvil tool and a rotary percussion piston located between them and face protrusions entering between the protrusions of the Jacob and forming two groups of workers chambers into which selectively, depending on the direction of rotation of the piston, fluid is supplied under pressure to rotate in one other direction the impact piston acting on its protrusions and on the protrusions being packed. making as a result of this turning movement.

The purpose of the invention is the communication of the 1I1 instrument with alternating oscillations and an increase in its amplitude of oscillations.

For this, the proposed mechanism is equipped with a second rotary impact nest located between this and one of the two anvils on working meters in series with the first piston, with both pistons and anvil connecting the housing made with a system of channels for supplying fluid to the working chambers and each the shock piston serves to distribute the fluid in the working

2

chambers, formed by the protrusions of the other piston and the incline.

In addition, the anvils, with their protrusions, are displaced one relative to another 90 °.

FIG. 1 shows the proposed mechanism, longitudinal iii oceBoii incision; FIG. 2 is a cross-sectional view along A-A in FIG. 1, in FIG. 3 - cross section bb pa fpg. 1, in FIG. 4 is a cross-section along b-b pa of fig. 1, on. 5 is a cross-section along G-D in FIG. 1, ia fgi. 6 shows a section along the DD in FIG. 1, and f1 and 7 is a cross-section along E-E and phpg. one.

The proposed mechanism includes a housing / in which anvils 2, 3, 4 are placed, rigidly connected to it with the help of radial protrusions. Between the anvils 2, 3 there is a rotary percussion piston 5, and between the anvils 3, 4 there is a rotary percussion piston 6. Inside the anvils 2, 3, 4 and 5, 6, there are holes through which the sleeve 7 passes. At the end, the sleeve 7 has a collar S, and at the other end there is a thread with a screwed nut 10, with the help of which the mechanism is assembled into a single unit. The anvil 2, on one side, has a thread 10 for the external connection, and, on the other, commercial projections 11. Anvil 4 has a design similar to anvil 2. The anvil 3 has, on both sides, end projections 2, and the projections

in each subsequent anvil, they are displaced by 90 ° with respect to the previous one, which contributes to a reduction in the dimensions of the mechanism.

The percussion pistons 5, 6 also have on both ends protrusions 13, 14. The protrusions of the anvils and the pistons go behind each other and form between themselves working chambers 15-18, into which fluid is supplied under pressure.

There are an equal number of working chambers on both sides of the Kaned piston 5 or 6, which ensures the dynamic balance of the pistons in the axial direction. The pistons 5, 6 and the housing / have channels for distributing the fluid into the working chambers of the mechanism.

The mechanism works as follows.

When the pistons 5, 5 are in the extreme (counterclockwise) position and the fluid is supplied to the calial 19 of the liner 7, the indicated medium is through the channels 20, the channels 21 made in the shock piston 6, the channels 22 enter the working chambers 15 of the porsche 5.

In this case, the chamber 16 by means of the channels 25, the channels 24 made in the piston 6, the channels 25 made in the housing 1 is in communication with the atmosphere.

Under the pressure of the fluid in the chambers 15, the piston 5 is displaced in a clockwise direction and strikes the anvil of 2, 3. In this position, the piston 6 with its channels 26 communicates the channels 27 with the channels 28, through which the fluid enters the working chambers 17 the piston b, and the chambers 18 of this porsche communicate with the atmosphere by channels 29, channels 30 in piston 5, and droplets 31 in housing 1.

Under the action of pressure fluid in the chambers 17, the piston 6 is displaced in a clockwise direction and strikes the anvil m 3, 4. In this position, the piston 6 with its channels 21 communicates channels 20 with the channels 23, and the fluid enters the working channels through these channels cameras 16.

In this case, the chambers 15 by channels 22, 24 communicate with the atmosphere. Under 1m pressured fluid in the chambers 16, the hole 3 is shifted in the counterclockwise direction.

earmuffs, striking the protrusions, anvil 2, 3. In this naked piston, 5 channels 26 communicate channels 27 with channel 29. Flows through these channels into working chambers 18, and chambers 7 receive channels 2S. channels 30 and 31 communicate with the atmosphere. Under the action of the pressure of the fluid in the chambers 18, the piston 6 is displaced in the counterclockwise direction, striking the protrusions on the anvils 3, 4. Subsequently, the shield repeats.

Thus, the blows Iorship 5, 6 serve as spools relative to each other and for each cycle, but two blows are made on the anvil on one and the other side.

PREPARATIONS

Claims (2)

1. A mechanism for rotating a drill tool or a drill tool containing two interconnected and with tool pockets and a rotating shock piston with an end lugs between the end projections of the torch and the two groups forming with them. working chambers in which a fluid node is selectively pressed by pressure to turn in one and another directions of the shock piston, acting with its protrusions on protrusions of anvils, making as a result of this a turning movement, characterized in that, in order to communicate the alternating oscillations and increase it hesitation of oscillations, the mechanism is equipped with a third one, connected to the first two, by the cobweb and the second rotary impact norn, located between this and one of the two anvils and a working successive telio with the first piston, the two pistons and soednn yuschy nakovalin configured Cornus a system of channels for the supply of fluid to the working chambers, and each impact hole serves to distribute the fluid in the working chambers formed by the cams of the other hole and the anvil. 2. The mechanism according to claim 1, characterized in that the anvils, with their projections, are displaced one relative to the other by 90 °.   - And in g in Fig / A- A FIG. AT 6 B- B Fig 6 YYY nineteen 29 FIG. one