Turning Technology Experience

Turning means that lathe processing is a part of mechanical processing. Lathe machining mainly uses turning tools to turn the rotating workpiece.

Turning:
On the lathe, the shape and size of the blank are changed by the rotary motion of the workpiece and the linear or curvilinear motion of the tool, and it is processed to meet the requirements of the drawing.

Turning is a method of cutting a workpiece on a lathe using the rotation of the workpiece relative to the tool. The cutting energy of turning is mainly provided by the workpiece rather than the tool. Turning is the most basic and common cutting method and plays an important role in production. Turning is suitable for machining rotary surfaces. Most workpieces with rotary surfaces can be processed by turning methods, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, end faces, grooves, threads, and rotary forming surfaces. The tools used are mainly turning tools.

Among all kinds of metal cutting machine tools, lathes are the most widely used, accounting for about 50% of the total number of machine tools. The lathe can not only turn the workpiece with turning tools but also use drills, reamers, taps, and knurling tools for drilling, reaming, tapping, and knurling. According to different process characteristics, layout forms, and structural characteristics, lathes can be divided into horizontal lathes, floor lathes, vertical lathes, turret lathes, and copy lathes, most of which are horizontal lathes.

Relevant experience in turning technology:
Lathes are mainly used to process shafts, discs, sleeves, and other workpieces with revolving surfaces, and are the most widely used type of machine tool in machinery manufacturing and repair factories.

1. Ordinary mechanic, easy to learn, find a lathe machining department, better than what you learned in school
2. Mold turners, especially plastic mold precision turners! Strict requirements for tools and precise dimensions. The finish of the car should be good, easy to polish, and to achieve a mirror effect, it needs a plastic mold foundation. Generally, several templates are added together, and the knowledge of plastic mold threads must be mastered, which is difficult.
3. Tool turning, processing reamers, drills, alloy cutter heads, tool stems, etc. This kind of turning is the easiest. Usually, in mass production, the most commonly used are double top, turning taper, and flow modulus, to do the fastest and easiest, reduce tool wear to a minimum, because this kind of machined product.​​
4. Large-scale equipment lathes, such lathes must have senior skills.​
5. CNC lathe, this type of lathe is the easiest and the most difficult. First of all, you must be able to read drawings, programming, conversion formulas, and tool application.

Safety technical issues in turning:
Turning is the most widely used one in the machine manufacturing industry. The number of lathes is large, the number of personnel is large, the processing range is wide, and the tools and fixtures used are many, so the safety and technical issues of turning.

1. Chip damage and protective measures: Various steel parts processed on the lathe have good toughness, and the chips generated during turning are rich in plastic curling and have sharp edges. When cutting steel parts at high speed, red-hot and long chips will be formed, which are very easy to hurt people, and are often wrapped around the workpiece, turning tool, and tool holder. Therefore, iron hooks should be used to clean or break them in time during work. When it is necessary to stop and clear it, it is not allowed to clear it or pull it off by hand. To prevent chip damage, measures are often taken to break chips, control the flow of chips and add various protective baffles. The measure of chip breaking is to grind a chip breaker or step on the turning tool. Use a suitable chip breaker and use a mechanical clamping tool.
2. The clamping of the workpiece: During the turning process, many accidents damage the machine tool, break or crash the tool, and the workpiece falls or flies out due to improper clamping of the workpiece. Therefore, to ensure the safe production of turning to process, special attention must be paid when clamping workpieces. Appropriate fixtures should be selected for parts of different sizes and shapes, and the connection between three-jaw, four-jaw chucks, or special clamps and the spindle must be stable and reliable. The workpiece should be clamped and clamped, and the large workpiece can be clamped with a sleeve to ensure that the workpiece does not shift, fall off and throw out when it rotates at high speed and is subjected to cutting force. If necessary, the top and center frame can be used to strengthen the clamping. Remove the handle as soon as it is clamped.
3. Safe operation: Check the machine tool comprehensively before work, and confirm that it is good before use. The clamping of the workpiece and the tool ensures that the position is correct, firm, and reliable. During processing, it is necessary to stop when changing tools, loading and unloading workpieces, and measuring workpieces. The workpiece should not be touched by hand or wiped with cotton silk while it is rotating. It is necessary to properly select the cutting speed, feed rate, and labor depth, and not overload processing. Workpieces, tool fixtures, and other sundries shall not be placed on the head of the bed, tool rest, and bed. When using the file, move the turning tool to a safe position, with the right hand in front and the left hand behind, to prevent the sleeves from getting caught. The machine tool must be used and maintained by a special person, and other personnel is not allowed to use it.

​