Metal cutting machine safe operation

Metal cutting machine machining is a machining method in which a cutting tool is used to remove excess material from a workpiece so that the workpiece is machined to a part that meets the size and accuracy required for the design. Since the cutting object is metal, the cutting tool is sharp and the rotation speed is fast. If there is slight negligence, the operator will be personally injured.

I. Insecurity in metal cutting

According to the characteristics of the metal cutting process, unsafe factors in the metal cutting process can be analyzed, as follows:

1. Machine injury caused by machine tool

2. When the processed parts and tools are processed, high temperatures are formed, and hot chips cause scald accidents

3. Generate brittle material dust and abrasive dust during cutting process

4, machine tool vibration and noise

5. Lubricating oil aerosol causes upper respiratory disease

6, when processing high polymer (plastic) materials, produce toxic and harmful substances

Second, the metal cutting machine safety operating procedures

1. The operator must be familiar with the basic knowledge of the machine's structure, performance, operating system, transmission system, protective devices, lubrication parts, and electrical and usage methods.

2. Wear protective labor supplies as required before working on the machine. Women workers must press their hair into the work cap. It is forbidden to wear gloves, scarf and apron.

3. Before driving, check the positions of the handles, the transmission parts and the protective cover, and the position limiting device shall be firm and reliable, whether the tool is firm and reliable, whether the cutting fluid meets the requirements, and the electrical protection is connected with zero and reliable. After inspection, lubricate and refuel according to the location and amount of oil specified in the lubrication chart of this machine.

3. After inspection and refueling, the operator runs at a low speed and idling for 3 to 5 minutes to check whether the machine tool operates abnormally, whether the parts are lubricated, the lubricant level, whether the joystick is flexible, whether the reciprocating mechanism is normal and reliable, and the mechanical and electrical limits. Whether the bit is reliable or whether the tool or grinding wheel has a crack. The grinding wheel must be replaced before using the wheel cutting machine for more than one month.

4, the spirit of processing operations should be concentrated, it is strictly prohibited to talk with others. It is strictly forbidden to leave the post automatically; it is strictly forbidden to grind the burr on the side of the grinding wheel cutting machine; no over-standard use is allowed; no mechanical and electrical limit is allowed to be disassembled; no extra items are allowed on the worktable; no redundant installation is allowed; Handle processing with rope or wire bolt handle. It must be stopped when leaving the machine, and it should be turned off for a long time.

5, the tool is clamped flat, solid and reliable, and check for looseness at any time.

6, before processing must be empty test trip, determine the reciprocating stroke limit work is correct, before processing.

7. When clamping the workpiece, the proper and safe clamping method must be selected according to the material type. The workpiece must be horizontal and perpendicular to the cutting line of the cutter. It must be fastened reliably. The long material must be fastened with a special bracket.

8. When starting to cut, you must observe whether the incision is skewed. When you find a skew, you must stop immediately to prevent twisting of the cutter or grinding wheel.

9. When working, the operator must stand on the side of the cutter and the cutting direction of the grinding wheel to prevent the tool, workpiece, and chip from collapsing and hurting others. It must be far away from the rotating parts and the ram's travel range.

10, grinding wheel cutting knife must be carried out at an average speed, even use force not excessive force. Grinding wheel cutting machine is strictly prohibited to cut soft material.

11. When clamping a large workpiece, the crane should be operated correctly, the workpiece should be hung firmly, the command must be clearly defined, the obstacles must be carefully checked on the worktable, and the bottom of the workpiece must not be supported by hand. When it is dropped, it should be slow, and it must not impact the machine tool. . The correct positioning, fastening and reliable, before processing. After processing, it must be determined that there is no lifting obstacle before lifting the workpiece.

12. When loading and unloading the workpiece, you must stop and then load and unload the workpiece.

13. It is forbidden to manually clean the chips during processing, and special tools must be used. When too much swarf accumulates, it should be stopped and cleaned in time.

14, cutting fluid cooling flow should be adjusted properly, the cooling site should be reasonable, not allowed to produce splashes during processing. The metamorphic cutting fluid should be cleared and collected in time, sent to the unit's designated collection point, and it is forbidden to dump at will.

15. When the machine tool fails or has abnormal sound, it should be stopped in time for inspection and processing. If it cannot be processed, it shall be reported to the maintenance personnel in time, and the records shall be recorded after the equipment completes the routine maintenance records and the shutdown platform. All electrical faults are strictly prohibited by the operator.

16. When the processing is finished or after work, the equipment maintenance requirements should be followed by cleaning the chips and thoroughly wiping the equipment.

Third, the maintenance content

Thoroughly clean the cuttings; thoroughly wipe the equipment.