Instructions for labor protection when working on a milling machine

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Instructions for labor protection when working on a milling machine

Occupational Safety and Health

Occupational Safety and Health / Standard instructions for labor protection

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Safe Operation

1. General requirements for labor protection

1.1. Trained personnel who have passed a medical examination, have been instructed in labor protection at the workplace, are familiar with fire safety rules and have mastered safe working methods are allowed to work independently on milling machines.

1.2. The milling operator is allowed to work only on machines to which he is admitted, and to perform the work that is entrusted to him by the head of the workshop (section).

1.3. A worker servicing milling machines must have: a cotton suit or semi-overalls, goggles, yuft boots.

1.4. If the floor is slippery (doused with oil, emulsion), the worker must demand that it be sprinkled with sawdust, or do it himself.

1.5. The miller is prohibited from:

work in the absence of a wooden grating on the floor under the feet along the length of the machine, which excludes shoes from getting between the slats and ensures free passage of chips;
work on the machine with a broken ground wire, as well as in the absence or malfunction of blocking devices;
stand and pass under a lifted load;
pass in places not intended for the passage of people;
enter without permission behind the fences of technological equipment;
remove the barriers of hazardous areas of operating equipment;
wash hands in emulsion, oil, kerosene and wipe them with wiping ends contaminated with shavings.

1.6. The milling operator is obliged to immediately notify the master about each accident and contact the medical center.

2. Labor protection requirements before starting work

2.1. Before starting work, the milling machine must:

accept the machine from the shift; check whether the machine and the workplace are well cleaned. You should not start work until the identified deficiencies are eliminated;
put on overalls, button up sleeves and a jacket, put on a hat;
check the presence and serviceability of the protective screen and goggles, safety devices to protect against chips and coolants;
adjust the local lighting so that the working area is sufficiently lit and the light does not blind the eyes;
check machine lubrication. When lubricating, use only special tools;

check at idle speed of the machine:

a) serviceability of controls;

b) serviceability of the lubrication and cooling system;

c) proper fixation of the switching and switching levers (make sure that the possibility of spontaneous switching from idling to working is excluded).

2.2. The miller is prohibited from:

work in slippers, sandals, sandals, etc.;
use faulty and incorrectly sharpened tools and devices;
touch live parts of electrical equipment, open the doors of electrical cabinets. If necessary, contact an electrician.

3. Labor protection requirements during work

3.1. During work, the milling machine must:

before installing the workpiece and fixture on the machine, clean them from chips and oil;
thoroughly clean the mating base and mounting surfaces to ensure proper installation and fastening strength;
install and remove heavy parts and fixtures only with the help of lifting equipment;
lay the parts submitted for processing and processed parts steadily on linings;
do not lean on the machine during its operation and do not allow others to do it;
if vibration occurs, stop the machine, check the fastening of the cutter and fixtures, take measures to eliminate vibration;
fix the milling mandrel or cutter in the spindle only with a key, turning on the enumeration so that the spindle does not turn;
do not leave the key on the head of the tightening bolt after installing the cutter or mandrel;
install a set of cutters in the mandrel so that their teeth are staggered;
after installing and fixing the cutter, check the radial and end runout, which should be no more than 0,1 mm;
when removing the adapter sleeve, mandrel or cutter from the spindle, use a special drift, placing a wooden lining on the machine table;
the workpiece is firmly and rigidly fixed in the fixture; in this case, the cutting forces should be directed to the fixed supports, and not to the clamps;
when attaching a part to untreated surfaces, use a vice and fixtures with a notch on the clamping jaws;
when fixing fixtures and workpieces on the machine, use only a specially designed handle or serviceable standard wrenches corresponding to the sizes of nuts and bolt heads;
feed the part to the cutter only when the cutter has received a working rotation;
embed the cutter into the part gradually: turn on the mechanical feed until the part comes into contact with the cutter. When manually feeding, avoid sudden increases in speed and depth of cut;
use only a working cutter; if the cutting edges are dull or crumbled, replace the cutter;
when changing the workpiece or measuring it, move the cutter to a safe distance and turn off the feed;
prevent chips from accumulating on the cutter and arbor. Chips should be removed only after the spindle has completely stopped with special hooks with protective cups and sweeping brushes;
do not allow the cleaner to clean the machine during its operation;

stop the machine and turn off the electrical equipment in the following cases:

a) leaving the machine even for a short time;

b) in case of temporary suspension of work;

c) during a power outage;

d) when cleaning, lubricating, cleaning the machine;

e) upon detection of any malfunction that threatens danger;

e) when tightening bolts, nuts and other fasteners.

3.2. While working on the machine, the milling machine operator is prohibited from:

work on the machine in mittens or gloves, as well as with bandaged fingers without rubber fingertips;
take and feed any objects through the working machine, tighten nuts, bolts and other connecting parts of the machine;
blow the workpiece with compressed air from a hose;
on the move of the machine, take measurements, check by hand the cleanliness of the surface of the workpiece;
to slow down the rotation of the spindle by pressing the hand on the rotating parts of the machine;
use local lighting with a voltage higher than 42 V;
cool the tool with rags and ends;
knocking out the cutter from the spindle, support it with your bare hand; for these purposes, an elastic gasket should be used;
when milling, put your hands into the dangerous zone of rotation of the cutter;
during operation of the machine, open and remove guards and safety devices;
remove chips directly with hands and tools;
leave keys, fixtures and other tools on a running machine;
be between the part and the machine when installing the part with a crane.

4. Labor protection requirements in emergency situations

4.1. In the event of a breakdown of the machine, failure of the control panel, the miller must turn off the machine and inform the master about it.

4.2. In case of fire of rags, equipment or a fire, it is necessary to immediately turn off the machine, inform the administration and other workers of the workshop about the incident and proceed to eliminate the source of fire.

4.3. In the event of an emergency, a danger to your health or the health of those around you, you should turn off the machine, leave the danger zone and report the danger to your immediate supervisor.

5. Labor protection requirements at the end of work

At the end of the work, the milling machine must:

turn off the machine and the electric motor;

tidy up your workspace:

a) remove chips and metal dust from the machine;

b) clean the machine from dirt;

c) carefully fold the workpieces and tools in the allotted place;

d) lubricate the rubbing parts of the machine;

hand over the machine to the shifter or foreman and report all machine malfunctions;
remove overalls and hang them in a closet, wash face and hands with warm water and soap, take a shower.

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