SU865642A1 - Device for abrasive-jet working of parts - Google Patents

Description

(54) yCTPOFICTBO FOR ABRASIVE JET TREATMENT

I

The invention relates to the field of abrasive blasting of parts.

Apparatus for abrasive blasting of parts is known, comprising a working chamber, a nozzle holder, and means for moving the nozzle, including a crank mechanism, which is articulated with a rocker arm 1.

However, in the known device is not effective processing of parts.

The purpose of the invention is to increase the processing efficiency.

This goal is achieved due to the fact that the means for moving the nozzle is equipped with an adjusting screw and a pair of gear wheels, one of which is installed on the crank with the ability to interact with another wheel having an eccentric pin inserted into the device, which is placed in a groove in the rocker arm that is articulated mounted on the end of the adjusting screw, while the yoke and the curvature-shatunny mechanism are hinged by means of a lever with a soploder mounted on the wall of the working chamber; m as a telescopic tube, the latter being mounted scharnirno.

FIG. 1 schematically shows the proposed device, a general view; in fig. 2- the same, side view; in fig. 3 shows section A-A in FIG. one; in fig. 4 shows a section BB in FIG. one; in fig. 5 shows a section B-B in FIG. 3

The device includes a chamber 1 filled with a hydraulic abrasive suspension 2, a duct 3, mechanisms for rotating 4, moving 5, switching 6, changing the trajectory of spindle 7, driving 8 and camshaft 9.

ten

Chamber 1 contains a supply air duct 10 of compressed air, a water pipe 11, a discharge duct 12 with a fan (not shown), a drain pipe 13 with a sump 14, loading and unloading ports 15, inside the perimeter of the chamber 1 is fixed

15 collector 16 spraying slurry 2.

A duct 3 is fixed along and inside the chamber 1, on which the rotation mechanism 4 with the grippers 17 is located and with the possibility of tilting on the axis 18, fixed by the stops 19.

20 On the box 3 are placed the mechanisms 5 for moving the workpiece 20 and the mechanisms 21 for moving the suspension 2. The mechanism 6 for switching is controlled by the knobs 22 and 23.

The mechanism for changing the trajectory of the spindle 7 includes a gear wheel 24, rotating around a fixed axis 25 and engaging with the bristles 26 rotating on the shaft 27, the rocker arm 28 having a groove 29, a rod 30, adjustable in length and one end with an extended sleeve 31 encompasses the crank 32, and the other is pivotally connected to the two-arm lever 33, the finger 34, mounted on the gear 26 eccentric to the shaft 27, entering into the groove 29 of the rocker arm 28, the adjusting screw 35 with the bar 36, pivotally connected to one end of the rocker arm 28, the double-arm lever 33, sharnarno connected at one end with the yoke 28, and the other with the hollow guide 37 of the spindle 38, having the possibility of axial movement and swing in the fork 39, fixed pivotally on top of the camera 1, the axis 40, connecting the rocker 28 with the bar 36, the drive shaft 41 with the coupling 42 and a handle 43 for switching on the mechanism 7, an inkjet apparatus 44, the nozzle 45 of which is fixed on the hollow shpindle 38.

The device works as follows.

The blank (die or punch) 20 is loaded via a loading device (not shown) through open windows 15 and secured in the grippers 17.

If the workpiece 20 has a round or other shape close to the rotation figure, then the processing is carried out using the rotation mechanism 4, for which, by turning off the movement mechanism 5 with the handle 22, the rotation mechanism 4 is turned on with the handle 23.

Then, the mechanism 7 for changing the trajectory is adjusted in such a way as to ensure the required contact of the hydroabrasive jet 2 with the working surface 20 of the workpiece being copied and to create uniform pressure on all sections of the profile being processed. For this purpose, they include the air duct 10 on a small jet of suspension 2, a collector 16 and an actuator 8. In this case, the nozzle 45 at the end of the spindle 38 will describe a complex closed trajectory. Moving the screw 35 of the yoke 28, adjusting the length of the shatun 30 and the height of the nozzle 45, you can get the shapely closed closed nozzle 45 curves with a hydroabrasive jet 2, similar to the working surface of the workpiece 20 and then adjust the pressure of the suspension 2 by means of compressed air

through the duct 10.

Simultaneously with the activation of the actuator 8, the mechanism 21 for displacing the suspension 2 is turned on. If the workpiece 20 has an elongated volumetric shape, then o6pa6oTjty is conducted with

using the mechanism 5 for moving the grippers 17, for which the rotation mechanism 4 is turned off by the handle 22 and the movement mechanism 5 is turned on by the handle 23.

If a constant position of the nozzle 45 is required, the drive shaft 41 is disconnected.

from the mechanism of changing the trajectory 7 by means of the coupling 42 by the handle 43.

The proposed device allows an increase in processing efficiency.

Claims (1)

Invention Formula A device for abrasive machining of parts, comprising a working chamber, a nozzle holder and means for moving the nozzle, including a Krivoschipno-Shatunny mechanism, hingedly connected to the rocker, characterized in that, in order to increase the processing efficiency, the means for moving the nozzle are equipped with an adjusting screw and a pair of gears wheels, one of which is mounted on a crankshaft with the ability to interact with another wheel having an eccentric pin inserted into the device, placed in a groove made in the anvils le which scharnirJ but mounted on the end of the adjusting screw, the rocker and krivoschipnoschatunny mechanism associated with lever means mounted on scharnirno tip guard processing chamber wall designed as a telescopic tube, Sources of information taken into account in the examination 1. The patent of the NDP No. 58899, cl. 67 in, published. 1966.