1. Check whether the workplace and tools are safe before work. If there are unsafe places and damages, clean and repair them in time and put them in place.

2. When using chisel, first sharpen the blade and grind off the tail hair. When cutting, it is forbidden to gouge people, and pay attention to the splashing direction of iron filings to avoid hurting people. When using a hammer, first check whether the handle is loose and wipe off the oil. Hands holding hammers are not allowed to wear gloves.

3. The cutter used must be equipped with a file handle. Except that the surface of the file is round, the file shall not swing up and down during operation. You should push it again, gently pull it back and keep it moving horizontally. Files shall not be stained with oil, and shall not be stacked with each other when stored.

4. Use a wrench to meet the requirements of nuts, stand in a good position, and pay attention to others at the same time to prevent the wrench from slipping and hurting people. The wrench is not allowed to be used as a hammer.

5. Before using the electric drill, check whether there is any leakage (if there is any leakage, it should be handled by an electrician) and stabilize the workpiece. People should stand steady, hold hands tightly, balance their hands hard, grasp the direction, and keep the drill pipe perpendicular to the surface of the workpiece being drilled.

6. When using a vise, add copper to the jaw according to the accuracy requirements of the workpiece. It is not allowed to slam the workpiece on the jaw. When tightening the vice, the force should be appropriate, not applied. After using the vise, clean the vise and loosen the jaws.

7. When measuring with a caliper, the caliper must be perpendicular or parallel to the surface of the workpiece to be measured.

8, vernier caliper, micrometer and other precision measuring tools, measurement should be light and smooth, not on rough surfaces such as blanks, and it is forbidden to measure heated workpieces, so as to avoid pinch friction damage.

9, when using the dial indicator, should make the table and table stand on a fairly stable table base, so as not to cause tilt and swing.

10, when using the level meter, handle it with care, and don't bump. The level meter is not allowed to be placed before the contact surface is wiped clean.

safety matters

(1) The file is a right-handed tool and should be placed on the right side of the vise. When placed on the vise table, the handle of the file should not be exposed outside the vise table, so as to avoid touching the ground and hurting feet or damaging the file.

(2) Files with useless handles or files with cracked handles cannot be used.

(3) When filing, the file handle should not touch the workpiece, so as to avoid the accident caused by the file handle falling off.

(4) Don't blow iron filings with your mouth to prevent iron filings from entering your eyes. You can't touch the filed surface with your hands.

(5) The file shall not be used as a crowbar or hammer. ?

Pay attention to your health

(1) In order to prevent the file from wearing too fast, do not file the hard skin of the blank or the hardened surface of the workpiece with a file, but use other tools or the front end and side teeth of the stand first.

(2) When filing, use one side of the falling knife first, and then use the other side after this side is dull. Because used file teeth rust easily.

(3) When filing, make full use of the effective working face of the file to avoid local wear.

(4) The file cannot be used as a tool for disassembly, knocking and prying, so as to avoid the file being broken due to fragile materials.

(5) When using plastic files and small files, do not use too much force to prevent the knife from breaking.

(6) The file should be waterproof and oil-proof. Files rust easily when they are wet with water. The file is easy to slip when working after being stained with oil.

(7) In the process of filing, if chips are found embedded in the file lines, they should be removed in time to avoid the chips scratching the machined surface. After the file is used up, brush off the remaining debris along the file line with a file brush or copper sheet to prevent rust. Never blow potato chips with your mouth to prevent them from flying into your eyes.

(8) When placing files, avoid collision with hard objects, avoid file overlapping and stacking, and prevent file damage.

Basic operation is a combination of technical knowledge, skills and strength, which are indispensable. We should consciously abide by discipline, have the spirit of hard work, and operate in strict accordance with the operating requirements of each type of work. Only in this way can we complete the basic training well.

The locksmith is a method that mainly uses hand-held tools to cut the workpiece clamped by the vice on the locksmith workbench. It is one of the important jobs in the machinery manufacturing industry. The basic operations of locksmiths can be divided into:

1. The auxiliary operation is marking, which is the operation of marking the machining boundary on the blank or semi-finished workpiece according to the drawing.

2. Cutting operations include chiseling, sawing, filing, tapping and tapping. Drilling (reaming and reaming), scraping and grinding.

3. Assembly operation is the process of assembling parts or components into machines according to the technical requirements of drawings.

4. Maintainability operation refers to maintenance, that is, maintenance, inspection and repair of machinery and equipment in use.