What Are The Methods Of Machining?

Machining, also known as machining, refers to a process of changing the shape or performance of a workpiece through mechanical equipment. With the rapid development of modern machining, many advanced machining methods have appeared. Different, the cutting method of the excess material of the part blank can be divided into several main different methods. The following Suzhou Gear Machining manufacturer – BICHU Metal Products Factory will introduce to you in detail the methods of machining.

• 1. Turning: The workpiece rotates during turning to form the main cutting movement. When the tool moves along the parallel axis of rotation, the inner and outer cylindrical surfaces are formed. The tool moves along the oblique line intersecting the axis to form a cone surface. The profiling lathe or On the CNC lathe, the cutting tool can be controlled to feed along a curve to form a specific rotating surface. When the forming turning tool is used, the rotating surface can also be processed when it is fed laterally. Turning can also process threaded surfaces, end planes and For eccentric shafts, etc., the turning precision is generally IT8-IT7, and the surface roughness is 6.3-1.6μm.
• 2. Milling: The main cutting movement is the rotation of the tool. In horizontal milling, the plane is formed by the edge on the outer surface of the milling cutter. In vertical milling, the plane is formed by the end face edge of the milling cutter. The rotation speed of the cutter can obtain a higher cutting speed, so the productivity is higher, but due to the cutting in and out of the milling cutter teeth, the impact is formed, and the cutting process is prone to vibration, which limits the improvement of the surface quality.
• 3. Planing: When planing, the reciprocating linear motion of the tool is the main cutting motion. Therefore, the planing speed cannot be too high, the productivity is low, and planing is smoother than milling. Its processing accuracy can generally reach IT8-IT7. The roughness is Ra6.3-1.6μm, the planing flatness can reach 0.02/1000, and the surface roughness is 0.8-0.4μm.
• 4. Grinding: Grinding uses a grinding wheel or other abrasive tools to process the workpiece. The main movement is the rotation of the grinding wheel. The grinding process of the grinding wheel is actually the three effects of abrasive grains on the surface of the workpiece: cutting, engraving and sliding During grinding, the abrasive grains themselves are gradually blunted from sharp, which makes the cutting effect worse and the cutting force becomes larger. When the cutting force exceeds the strength of the adhesive, the blunt abrasive grains fall off, exposing a new layer The abrasive grains form the “self-sharpening” of the grinding wheel, but chips and broken abrasive grains will still block the grinding wheel. Therefore, after the grinding time, the grinding wheel needs to be dressed with a diamond turning tool, etc.
• 5. Drilling and boring: On a drilling machine, rotating a hole with a drill bit is a common method for hole processing. The processing accuracy of drilling is low, generally only up to IT10, and the surface roughness is generally 12.5-6.3μm After drilling, reaming and reaming are often used for semi-finishing and finishing. Reaming is used for reaming, and reaming is processed by reaming. The reaming processing accuracy is generally IT9-IT6, and the surface roughness is Ra1. 6-0.4μm, when reaming and reaming, the drill bit and reamer generally follow the axis of the original bottom hole, which cannot improve the position accuracy of the hole.
• 6. Tooth surface processing: gear tooth surface processing methods can be divided into two categories, forming method and generating method. The machine tool used to process tooth surface by forming method is generally an ordinary milling machine, and the tool is a forming milling cutter, which requires two simple forming methods. Movement, rotation and linear movement of the tool, and the commonly used machine tools for machining tooth surfaces by the generating method include gear hobbing machines and gear shaping machines.
• 7. Machining of complex curved surfaces: The cutting and processing of three-dimensional curved surfaces mainly adopts the methods of profiling milling and CNC milling or special processing methods. The prototyping is used as a model for profiling milling. During processing, the profiling head of the ball head always touches the prototypical surface with pressure. , the movement of the profiling head is converted into inductance, and the processing is enlarged to control the movement of the three axes of the milling machine to form the trajectory of the cutter head along the curved surface. The milling cutter mostly uses a ball end milling cutter with the same radius as the profiling head. The emergence of numerical control technology is Surface processing provides more methods. When processing on a CNC milling machine or machining center, it is processed point by point by a ball end mill according to coordinate values.
• 8. Special processing: special processing methods refer to a series of processing methods that are different from traditional cutting processing methods and use chemical, physical (electricity, sound, light, heat, magnetism) or electrochemical methods to process workpiece materials. Suzhou Machined parts manufacturer-Aihao Metal Products tells you that these processing methods include: chemical machining (CHM), electrochemical machining (ECM), electrochemical mechanical machining (ECMM), electrical discharge machining (EDM), electrical contact machining (RHM) , ultrasonic machining (USM), laser beam machining (LBM), ion beam machining (IBM), electron beam machining (EBM), plasma machining (PAM), electrohydraulic machining (EHM), abrasive flow machining (AFM), abrasive Jet machining (AJM), liquid jet machining (HDM) and various composite machining, etc.

The above are the machining methods and cnc machining steps compiled by Suzhou machined parts manufacturer – BICHU Metal Products Factory. BICHU Metal Products Factory specializes in the production of sheet metal parts, stamping parts, machined parts, stretched parts, welded parts, metal processed parts, etc. The manufacturer, the main business is sheet metal parts, stamping parts, sheet metal parts processing, stamping parts processing, machined parts, has passed the IATF16949 quality system, welcome to call for cooperation.