SU1389967A1 - Thermopulse installation for removing burrs - Google Patents

Description

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The invention relates to mechanical engineering and can be used when removing burrs from parts after cold working.

The aim of the invention is to increase the reliability of the device during operation and increase its service life.

The goal is achieved by eliminating the effect of the combustible mixture on the exhaust valve by passing this mixture through a liquid and making holes in the face wall of the cap holding the removed burrs on the cover. This prevents solid and molten particles of the removed burrs from falling on the exhaust valve seat and the sealing elements and valve overhaul resistance increase.

Figure 1 shows the installation in the initial position, a general view; on f p-- figure 2 - the same, in the working position.

The installation works as follows.

The workpiece 7 is placed inside the gutter 6 through the windows 15, after which the lid 6 is lowered into the working chamber 3 by means of the pneumatic cylinder 8, while the lower end of the lid 6 with holes 9 reaches the level of liquid in the chamber 3, and the upper end is in contact with the elastic sealing ring on the chamber, which ensures its tightness. The exhaust valve is closed during this period, i.e. the spool 11 is in the upper position and tightly pressed against the seat by supplying compressed air through the opening 12 into the cavity a.

 After the cover 6 is lowered to its lowest position, through the inlet valve 4, a combustible mixture is fed into the working chamber 3, which is ignited by an electric candle 5. The resulting gases with high pressure and temperature

The Nild part of the stationary frame provides for burning out of the fixed frame in the form of a hollow body 1 filled with a liquid 2 (for example, water). A working chamber 3 with an intake valve 4 and a spark plug 5 is fixed inside the housing. A movable cover 6 for machining workpieces 7 is placed above the chamber with the possibility of moving along its inner walls. The Kripps 6 are made in the form of a hollow cylinder with a through side cut-out and fixed to a pneumatic cylinder 8. In one of the end walls of the cover 6 placed between the exhaust valve and the other end wall, holes 9 are made.

From below to chamber 3, along its longitudinal axis, the exhaust valve 10 is fastened, which is a body with a conical seat, inside of which a spool 11 is placed with a corresponding saddle of the body a conical protrusion.

An aperture 12 is provided for supplying compressed air in the valve body, and side openings 13 are made in the valve body for the discharge of the combustible mixture from the chamber. A pipe 14 is provided for removing the mixture from the cavity of the tank.

Senets on the workpiece 7. The air pressure in the cavity a is chosen so that when the maximum combustion pressure in the chamber is reached, the exhaust valve opens, i.e. the spool 11 moves rapidly downwards (Fig. 2) and the combustible mixture, the passage through the openings 9 in the end face of the valve, as well as through the central opening 16 and the side openings 13 in the valve body 10, enters the body with liquid and is removed from the plant through pipe 14 At the same time, the fluid found in the working chamber is also displaced into the housing 1 (shown by arrows, Fig; 2).

After that, the kryppka 6 with the processed part 17 rises, and the liquid from the tank 1 through the holes 13 and 16 refills the working chamber according to the law of communicating vessels (the valve 11 in this perispus D slowly moves upwards at a predetermined speed and after the filling of the chamber with liquid closes the opening Tie 16).

After removal of the machined part 1 7 from the lumen cavity, the installation cycle is repeated.

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FIG. 2

Claims (1)

THERMAL PULSE INSTALLATION FOR REMOVAL OF ADHESTERS, containing a frame with a working chamber with spark plugs, inlet and outlet valves for the combustible mixture and a movable. exhaust valve, the frame is made in the form of a hollow housing, the working chamber is placed inside this housing with the formation of a cavity for liquid between the inner walls of the housing and the outer chambers, the exhaust valve is mounted n in the bottom of the chamber, along its longitudinal axis, and in the walls of the chamber, holes are made for connecting it to the liquid cavity, while the movable cover of the chamber is made in the form of a hollow cylinder with end walls, on one of which is located between the exhaust valve and the other end a wall, through holes are made for the passage of the combustible mixture and retention of the removed burrs on the lid.