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(1) Abnormal temperature rise. Commonly used in motors and bearing gearboxes used in various machine tools. When the temperature rises above the permissible value, it indicates that the machine tool is overloaded or the part is faulty. In severe cases, the odor of the lubricating oil and the white smoke can be seen.
(2) abnormal speed. The machine speed suddenly exceeds or falls below the normal speed, which may be due to a sudden change in load or a machine failure.
(3) Excessive vibration and noise. The failure rate of the machine tool due to vibration accounts for 60% to 70% of the total failure. The reasons are various, such as poor machine tool design, machine tool manufacturing defects, installation defects, unbalanced component movements, parts wear, lack of lubrication, and foreign materials entering the machine tool.
(4) Percussion sounds. Loose parts, parts, and imbalanced rotors may all produce a crash sound.
(5) The input and output parameters are abnormal. The performance is: change of machining accuracy; change of machine efficiency (eg pump efficiency); power consumed by machine tool is abnormal; abnormal quality of processed product such as ball mill smashed particle size changes; the amount of feed suddenly decreases, indicating that the production system has a leak or blockage; The output changes during the operation of the disease.
(6) Machine internal defects. Including the composition of the machine tool parts cracks, electrical equipment, electrical insulation degradation, due to corrosion and other defects.
2. Fault detection of wearing parts in sports machinery The failure of general machinery and equipment is more often manifested as vulnerable parts becoming consumable parts. Failure of sports machinery often refers to failure of wearing parts. It is an important task to prevent accidents by improving the quality and service life of wearing parts and timely updating scrapped parts.
3. Control measures for common risk factors of metal-cutting machine tools (1) The equipment is reliably grounded and the lighting adopts safe voltage.
(2) Wedges and pins cannot protrude over the surface.
(3) Use special tools with goggles.
(4) tail safety bending device and set rack.
(5) The components are firmly mounted.
(6) Timely maintenance of safety protection and protection devices.
(7) Choose qualified grinding wheels and install the card reasonably.
(8) Strengthen inspections, eliminate violations, and wear good labor protection products.
Safety Technology Measures for Metal Cutting Machines
1. Abnormal operation of the machine tool When the machine tool is operating normally, all parameters are stable within the allowable range. When the parameters deviate from the normal range, it indicates that the system or the machine itself or a part or part of the equipment is faulty, and the change must be immediately identified. Reasons to prevent accidents caused by developments. Common anomalies include: