SU828540A1 - Apparatus for hydroabrasion working of holes in parts - Google Patents

Abstract

DEVICE FOR P ~ DROABRA- ZIVNOY OBRABOTYU1 holes in workpieces, comprising a working chamber connected to an upper hopper for collecting the fractions separated from the lower bunkeraraspredelitelnym valve, a pumping station E with the pressure line, characterized in that in order to ensure complete removal of chips and burrs when machining the holes of the oil channels of the crankshafts, due to the uniform pumping of the working mixture through them, the lower bunker is made in the form of separate pockets, each! of which is connected to a separate pressure line, which supplies the working mixture to a certain group of holes.

Description

This invention relates to the field of waterjet machining.

Apparatus for water-jet treatment of holes in parts containing a working chamber connected to an upper bunker for collecting shot separated from a lower bunker by a control valve, a pumping station with pressure lines are known.

A disadvantage of the known device is the incomplete removal of chips and burrs when machining holes in parts such as a crankshaft.

The purpose of the invention is to ensure complete removal of chips and burrs when machining the holes of the oil channels of the crankshafts by uniformly pumping the working mixture through them.

The goal is achieved by the fact that the lower bunker is made in the form of separate pockets, each of which is connected to a separate pressure line, which supplies the working mixture to a certain group of holes.

FIG. 1 is a schematic diagram of the device; in fig. 2 diagram of connecting the device to a pumping station with a tank; in fig. 3, section A-A in FIG. one; in fig. 4 shows a circuit for circulating, cooling and cleaning the working mixture.

The device contains a working chamber 1, pumping stations 2 with a tank 3, the upper bunker 4 is connected to the working chamber 1 with a grid 5 mounted in it, the lower bunker 6 separated from the upper bunker 4 by a control valve 7. The lower bunker 6 has two pockets connected to pressure lines 8 and 9; Tangential nozzles 10, connected to pressure lines 8 and 9, are also installed in the lower bunker 6,

In pressure lines 8 and 9 there are strips 11, separating them, the upper and lower parts,

Pump stations 2 are connected to the tank 3 and the pressure line m B and 9

by means of the distributor 12, which at the given moments of the cycle carries out the transfer of liquid to the discharge into tank 3 or pressure lines 8 and 9.

The working chamber 1 is equipped with movable nozzles 13, the number of which is equal to the number of oil channels of the crankshaft 14. The movable nozzles 13 are connected to pressure membranes 8 and 9 and are designed to pump the working mixture through the oil channels of the crankshaft a 14. Dp maintain the normal temperature and clean the working The liquids from the dirt of the tank 3 of the pumping station 2 are connected by pipelines 15 and 16 to the additional tanks 17 and 18 containing the heat exchanger 19, the circulation pump 20 and the pump 21 for pumping out the dirt from the tank 17. as follows. The crankshaft 14 is installed in the working chamber 1. Hermetically closed- 25

The working chamber 1 and the movable nozzles 13 are inserted into the holes of the oil channels of the crankshaft 14.

Then the dispensing valve 7 is closed, closing the openings between the upper bunker 4 and the lower hopper 6, while the distributor 12 connects the pumps 2 to the pressure lines 8 and 9. As the liquid approaches the connection point of the pressure lines 8 and 9 to the bottom hopper 6, by strips 11, the flow is divided into two parts, one from. which captures

the fraction coming from the lower hopper 6. After the shot passes through the strips 11, the two parts of the flow are re-connected.

By eliminating the possibility of creating a plug in the lower part of the lower hopper 6, the pellets are separated by jets of liquid, flushing through the tandite with flushing only liquid.

during the flushing process, with a liquid to ensure the removal of shot from the oil channels of the cranked vap 14, the movable nozzles 13 are retracted and reintroduced into the holes of the oil channels. At the end of the cycle, the dispenser switches the liquid flow to the drain, the separation valve 7 opens, the fraction from the upper bunker 1 drops to the lower hopper 6, the movable nozzles 13 are retracted to the initial position. Gentiapia nozzles 10. The working mixture, consisting of shot and liquid, is fed at high speed through the movable nozzles 13 into all the oil channels of the crankshaft 14. After the passage of the oil channels, the working mixture passes through the holes in the crankshaft 14 of the crankshaft 14 into the upper hopper where the shot fraction occurs. from the liquid. The fraction is retained by the grid 5, settles at the bottom of the upper bunker 4, and the liquid enters the tank 3 through this grid. Upon completion of the passage through the oil channels of the entire portion of the fraction,

Claims (1)

DEVICE FOR HYDROABRASIVE HOLES PROCESSING IN PARTS, containing a working chamber connected to the upper hopper for collecting shots separated from the lower hopper by a distribution valve, a pump station with pressure lines, characterized in that, in order to ensure complete removal of chips and burrs during processing of holes crankshafts, due to the uniform pumping of the working mixture through them, the lower hopper is made in the form of separate pockets, each of which is connected to a separate pressure line, providing the supply of the working mixture to a specific group of holes.