1, turning processing
Why is the factory called the workshop? This "car" refers to turning. The key to turning is to rotate the workpieces that need to be machined, and then let the moving tools move close to them to sculpt the surface of the workpiece. First, the workpiece is fixed on the machine by the chuck. Next, the workpiece is rotated at high speed by the motor. The rotation speed can be artificially controlled according to our requirements for machining. Then, you can start controlling the 12 inches cut off wheel to sculpt on the surface of the workpiece. This is called “passing the knife”. Common turning tools are often made of high-speed steel or hard alloy. In recent years, ceramic tools and synthetic diamond tools have been widely used in the market. Different shapes of turning tools can meet various processing requirements: in addition to the outer surface, the use of boring tools in turning can also finish the inner surface where the workpiece has holes.
2, milling processing is the use of rotating processing, but this round to the milling cutter to rotate.
The traditional milling process has two relative motion modes, one is that the workpiece to be processed is fixed, and the milling cutter is used to sit and rotate and translate by itself; while the other milling cutter simply performs the rotary motion, the workpiece can be along the workpiece. Move in the front, back, left and right, up and down directions. The milling cutter is a multi-blade tool. In each milling process, each cutting edge of the milling cutter only participates in one cutting, and the rest of the cutting time is beneficial to heat dissipation. In this way, the cutting efficiency of the milling cutter is higher than that of the single-edged turning tool. Different shapes of milling cutters can complete the processing of various planes, step faces, grooves and cavities. The milling amount used for milling consists of four factors: cutting speed, feed rate, back-feeding amount (milling depth) and side-cutting amount (milling width).
3, planing processing
The working principle of the planing process is clear at a glance. The simple reciprocating motion is extremely inefficient compared to turning and milling, but it is also used for rough processing of the surface of the workpiece because of the simple structure and ease of use of the equipment and tools.
4, grinding processing
The grinding process uses a grinding wheel such as a grinding wheel or a belt to cut the surface of the workpiece. In today's machining, the grinding head can be integrated into the machining center of CNC milling machines.
5, tooth surface processing
Tooth surface processing is a new processing method. This processing method is divided into two categories: one is the forming method, and the other is the forming method. The forming method is mainly processed by a common milling machine. The tool is a forming milling cutter, which requires two simple forming movements of the rotary motion and the linear movement of the cutter. The common machine tools for forming the tooth surface by the forming method are a gear hobbing machine and a gear shaping machine.
6, complex surface processing
For the machining of complex surfaces, CNC machine tools come in handy. The cutting process of three-dimensional curved surface mainly adopts the method of copy milling and numerical control milling or special processing method. Copy milling must have a prototype as a master. The ball-shaped profiling head in the process has been in contact with the prototype surface with a certain pressure. The motion of the profiling head is transformed into an inductance, and the machining enlargement controls the movement of the three axes of the milling machine to form a trajectory of the cutter head moving along the curved surface. Milling cutters are often used with ball-end milling cutters with contoured heads. The emergence of numerical control technology provides a more effective method for surface machining.
7, other processing technology
When drilling the hole in the drilling machine, in general, the drill should complete two movements at the same time: the main movement, that is, the rotary motion of the drill around the axis (cutting motion);
Auxiliary motion, that is, the linear motion of the drill bit along the axis direction to the workpiece (feed motion). When drilling, mainly due to the shortcomings in the structure of the drill bit, the machining quality is affected. The machining accuracy is generally below IT10, and the surface roughness is Ra12.5μm or so, is rough processing.
Multi-axis CNC machining
Multi-axis CNC machining can simultaneously control the linkage of more than 4 coordinate axes, and combine the functions of CNC milling, CNC boring, CNC drilling, etc. After the workpiece is clamped, the workpiece can be milled, boring, drilling and other processes. The machining effectively avoids the positioning error caused by multiple installations, shortens the production cycle and improves the machining accuracy.
The basic working principle of electric welding is to turn on the voltage of 220V or 380V, reduce the voltage through the pressure reducer in the electric welder, enhance the current, and make the electric energy generate huge arc heat to melt the electrode and steel, and the welding rod melts between the steel. More integrated.