SU1225766A1 - Safety device of machine for rough grinding with swinging grinding wheel - Google Patents

Description

The invention relates to hydraulic safety devices in a grinding machine with an oscillating grinding wheel, in which the grinding unit can rotate around the center of rotation, located outside the center of the grinding wheel, to set the grinding wheel at an angle and for local impact on areas with defects processing nree fixed table grinding machine.

Safety devices are known which are designed to prevent axial unintended collision of the grinding wheel with the grinding table or product on the grinding table, since such incidents always present the danger of damage to the abrasive wheel and, as a result, represent the danger of an accident.

A safety device is known which, in the application of a setting cylinder, is for a grinding unit made in the form of a cradle, generally isolated and at the same time relatively expensive hydraulic unit (GDR patent No. 112378, class B 24 V 27/04, oglik 1980 ).

It is also known a device for turning the grinding wheel in grinding machines, which, besides the inclined grinding wheel, provides for grinding area and local impact on the flap. 11th places with a stationary table of the grinding machine (GDR patent N ° 153597 , class B 24 V 27/04, published 1980).

In this solution, the oscillatory movement is carried out with the help of a hydraulic oscillating cylinder; a requirement has arisen with regard to the further development of trans; 1, a protective device for the mechanism for turning the grinding wheel.

The purpose of the invention is to increase safety when using the oscillating movement of the grinding unit, and hence the grinding wheel.

FIG. a machine for grinding grinding with a 1ms grinding wheel at a certain angle in the working area, as well as with a swing angle in the safety end area on both sides of the working area, general view; 2 is a schematic diagram of a safety device.

Grinding wheel 1 turns

horizontally above the ground product 2

around the center of rotation 3, together with the grinding unit 4. A rotary cylinder is provided for the swiveling motion

5c with a piston rod 6, the cylindrical body of which is hingedly connected with the transverse carriage 7 to the rotary frame 8 on which the grinding unit 4 is located.

The rotary cylinder consists of a working cylinder 9 with a through piston rod.

6 and fixed on it by the working piston iO and from the end cylinders 11 located at both ends of the working cylinder 9 and the corresponding end pistons 12. A common pressure wire 3 of the end cylinders 11, which goes to

the pre-tensioning pipeline 14 is connected through a safety 15 and a distribution 16 valves with a pressure cavity of the installation cylinder 17 on the side of the porn shaft, serving as a discharge zone.

The device works as follows.

The dispensing valve 16 (Fig. 2) is shown in position to the starting point for lowering the grinding wheel 1 onto the grinding product 2. After the grinding wheel 1 is installed and the working pressure is injected into the cavity of the mounting cylinder 17 on the piston side, the working liquid is alternately injected into the cavity pumping the working cylinder 9, as a result of which the grinding unit 4 with the grinding wheel 1 performs an oscillating horizontal movement, which is used to grind individual defects on the grinding wheel.

If, as a result of an erroneous maintenance of the grinding machine, the grinding wheel 1 is rotated by the product 2 being ground in one of both directions by an additional angle p, then the working piston 10 pushes the corresponding end piston from its previous position. The oil, displaced from the corresponding end cylinder, flows through the pressure wire 13 to the distribution valve 16 and switches it, as a result of the oil pumping, into the cavity of the installation cylinder 17 from the side of the piston rod and raises the grinding wheel 1 above the grinding product 2, because switching the dispensing valve 16, the oil can release the discharge cavity of the installation cylinder 17 from the side of the piston that was previously under pressure.

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Claims (1)

SAFETY DEVICE OF THE PER-GRINDING GRINDING MACHINE WITH A TURNING GRINDING CIRCLE, containing the swing mechanism of the grinding wheel around the center of swing located outside the center of the grinding wheel, made in the form of a swivel cylinder pivotally mounted between the grinding head with a mounting cylinder and a mounting cylinder the cavity of the rotary cylinder is equipped with end cylinders with pistons mounted on the end faces, while the end cylinders by means of The pressure pipe into the device is connected to the mounting cylinder of the grinding head, and the rod of the rotary cylinder is installed in the central holes of the pistons of the end cylinders. in 3 (Л с No. бе SL о: