SU1222510A1 - Device for vibration machining - Google Patents

Description

The invention relates to the surface treatment of parts in containers that perform low-frequency vibrations, and can be applied in various areas of mechanical engineering for finishing and hardening parts.

The purpose of the invention is to increase the reliability of the device for vibration processing by eliminating the elements that control its movement in a cantilever manner.

FIG. 1 shows the device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. one; 4 is a kinematic device diagram.

The device for vibration processing consists of a toroidal container 1, elastic elements 2, a vibrator made in the form of a vertical shaft 3 with a hinge 4 located between its ends with balls 5 mounted on the base 6 under the bottom of the container 1, and is connected to the bottom of the container 1 by means of a clamping bolt 7 with a nut 8, and in the lower part a vibrator is connected to the electric motor 9 by means of a crank 10 with a movable pin 11 and stop screws 12 and 13 of the shaft 14 and drive 15.

The device works as follows.

Before starting, the device is configured. After the toroidal container 1 is loaded, during which the elastic elements 2 settle, the upper part of the vibrator is attached to the container body 1 by means of a bolt 7 and a nut 8. In this position, the hinge 4 with the balls 5 is free of load. Next, the movable pin 11 of the crank 10 is set to a predetermined amount of eccentricity using stop screws 12 and 13 to obtain the necessary amplitude of oscillation. From the electric motor 9, through the drive belts 15, the movement is transmitted to the shaft 14 and further to the crank 10, which rotates the movement of the shaft 3, and with it the container

ner 1. i

Placement of balls between rubbers

the spherical surfaces of the hinge allows them to perceive large axial loads and reduce the force of the three. during its operation, which means expanding the range of vibration modes

ten

"five

.

20 25

2225102

container while maintaining high operational reliability of the device.

The hinge location along the axis of the toroidal container at a distance from its bottom equal to 0.25-1.0 torus radius is due to the greatest intensity of the processing process due to the creation of a trajectory of movement of the container points, providing a vibrational-circulation movement of the loading mass in a spiral m and the working environment) with the imposed limitations of the acceleration of oscillations of the elements of the device, based on the operating conditions of the latter

.a K.g; K 10-15,

where a is the maximum acceleration of container points along the coordinate axis;

K is the coefficient of permissible excess acceleration of the free fall g,

With a ratio of:: 0.25 (where r is the torus radius, 1 is the distance from the hinge center to the bottom of the container) for a given value of the vertical component of the oscillation amplitude AC (in the practice of vibro-processing in toroidal containers, 25-3 mm) of the radial Ay and the tangential A components of the oscillation amplitude are insufficient for the oscillatory-circular motion of the mass of the load in a spiral.

Gsob (,);

sob (m-s):

  Coscp J

; A rt2q) 5irtot,

 1 COSCp

where about - the ANGLE with top in the center of the hinge, formed between a vertical axis and an axis drove; Cf is the angle with the apex in the center of the hinge formed between the vertical axis and the straight line connecting with the radius of the torus.

With the ratio - V 1 for a given

25-3 mm, components A and A take values at which the value of the coefficient K reaches unacceptable values in terms of the operational reliability of the device () due to

K |

(

W

angular frequency of oscillation (for vibration processing and 140-500 s).

2

3

VNIIPI Order 1654/16 circulation 740- Subscription Branch PPP Patent, Uzhgorod, ul. Project, 4

/ (Figl

Claims (1)

DEVICE FOR VIBRATION PROCESSING, comprising a toroidal container elastically mounted on the base and a vibrator mounted on a vertical shaft mounted in a bearing assembly rigidly fixed on the base and connected to an electric motor, characterized in that, in order to increase the reliability of the device, the lower end the vertical shaft is connected to the electric motor by means of an adjustable crank inserted into the device, and the bearing assembly is made spherical, while in the central part of the container an opening intended for its installation on the upper end of the vertical shaft with the possibility of axial movement, and the center of the spherical hinge is located at a distance from the bottom of the container, equal to 0.25-1.0 radius of the torus. 9iOJ>