CS259168B1 - Device for grinding machine's grinding wheel's subsidence prevention - Google Patents

Abstract

Abrasive fall prevention device grinding wheel discs with of a hydraulic cylinder with a piston, in particular grinding the billet ends, has a hydraulic piston cylinders fitted with through piston rod one end of which is fixed to arm weights and the other end is supported by a shoulder grinding wheel. Hydraulic cylinder it is provided with a relief pipe in which it is a solenoid valve mounted with photocell, placed ^ at ground level the object and at the same time it is against the photocell a light source is stored.

Description

The invention relates to a device for preventing the grinding wheel from sanding down, especially when grinding the billet ends.

So far, the grinding wheel has been pressed into engagement by the operator. The operator of the grinding machine must, when the billet face is at the level of the grinding wheel, lift the disk out of engagement and, when the billet is reversed, manually grip the billet wheel against the billet when the billet face and grinding wheel are covered. This procedure, with frequent repetition, places considerable demands on the perception and concentration of the operator and causes excessive mental fatigue and mental exhaustion. As a result, when the billet is moved outside the grinding wheel, the disk is lowered and the side of the wheel strikes the back of the billet. This causes damage to the clamping shaft of the grinding machine and expands the grinding wheel, the fragments of which can seriously injure the operator of the grinding machine. Downtime resulting from repair and replacement of damaged parts reduces labor productivity. It is also used to register the end of the ground part 'adjustable mechanical stops. Here, mechanical wear of the equipment occurs, which requires shutting down the entire equipment, with the consequent reduction in labor productivity and the need for highly qualified maintenance and repair workers. When changing the length of objects to be ground, it is always necessary to re-adjust the mechanical stops.

These disadvantages are eliminated furnished. according to the invention. It is based on the fact that the piston of the hydraulic cylinder is provided with a through piston rod, one end of which is articulated, fixed to the weight lever and the other end is supported by a grinding wheel arm, the hydraulic cylinder is equipped with an overflow tube. connected to a photocell located at the level of the abrasive in the article, and at the same time a light source is placed against the photocell.

The device according to the invention substantially reduces the mental and mental fatigue of the operator of the grinding machine and prevents damage to the clamping shaft and the grinding wheel by impacting the object to be ground. It is nc-n259168

- 2 increased safety and health protection when working on the grinding machine. There is no increase in production costs necessary for the replacement of damaged and worn parts of the equipment. The saved time required for this replacement and repair will increase the productivity of the grinding machine.

The accompanying drawing shows a diagram of the arrangement according to the invention.

about the device

On the hydraulic cylinder with £ overflow pipe 6 provided with an electromagnetic valve 2, a piston 11 with a piston through <3 Cl2 · ^e weights over £ £ lever and in constant contact with the shoulder grinding wheel £ £. The pressure of the grinding wheel 8 and the billet 8 is secured by a pneumatic cylinder 10. At the level of the object to be ground, here the billet 8, a light source 13 and a photocell 12 connected to the solenoid valve 2 are positioned opposite to each other.

The pneumatic cylinder 10 presses the grinding wheel 6 on the arm 7 into engagement. A piston 11 with a through piston rod 6 is mounted in the hydraulic cylinder and is continuously pushed by the weight 5 through the lever 6 from below onto the arm 7 of the grinding wheel. Accurate copying of the surface of the ground billet 8 is ensured by the transfer tube 6 of the hydraulic cylinder 6 with the solenoid valve 2 open. The ground billet 8 with its celery is ground to the level of the radial axis of the grinding wheel 8, revealing the optical visibility between the photocell 12 and the light source 13. This is an impulse to close the solenoid valve 2 and thereby to fix the position of the arm with the grinding wheel. . When the billet 8 is moved in the opposite direction, the optical visibility cover between the photocell 12 and the light source 13 is the impulse fc 'π

opening of the solenoid valve 2, this ensures the necessary pressing of the grinding wheel 6 over the grinding billet 8 along its entire length.

The device according to the invention can be used in all cases when, during grinding, after the grinding wheel has passed over the edge of the object to be ground, the height fixation of the grinding wheel to the object to be ground is not ensured. ·.

Claims (1)

Apparatus for preventing the grinding wheel of a grinding machine from dropping by means of a hydraulic cylinder with a piston, in particular when polishing the ends of billets, characterized in that the piston (11) of the hydraulic cylinder (1) is provided with a through piston rod (5). the arm (7) of the grinding wheel (9) is supported on the weight lever (3) and at the other end, the hydraulic cylinder (1) being provided with a transfer tube (6) which houses a solenoid valve (2) connected to a photocell (12) located at the level of the object to be ground, and at the same time a light source (13) is positioned opposite the photocell (12).