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Machining products refer to the use of machining technology for fine processing of various types of circuit boards in the circuit board production process to meet design requirements. Circuit Board (PCB, Printed Circuit Board) is an indispensable basic component in electronic products, its role is to connect various electronic components through the circuit, so as to achieve the function of electronic equipment. Machining products are part of it, mainly including the drilling, milling, marking, deburring and other processes of the circuit board.
Introduction: Machined gears are gears manufactured by machining methods (such as milling, turning, grinding, etc.). This type of gear is usually used in high-precision applications and plays a key role in the transmission system. The design, manufacturing process and material selection of gears will directly affect their performance and service life.
Classification of gears
Spur gear: the tooth surface is parallel to the axis, the transmission is simple and widely used.
Helical gear: the tooth surface is at a certain Angle with the axis, the meshing is smooth, the noise is low, and it is suitable for high-speed transmission.
Bevel gear: usually used in the transmission device with a large axis intersection Angle, the tooth surface is in an umbrella shape.
Planetary gear: composed of center gear, planetary gear and external gear, widely used in reducer and automatic transmission system.
Gear processing technology
Gear milling: Use milling machine and milling cutter to cut the tooth shape of the gear, suitable for spur gear or simple helical gear.
Hobbing: The use of hobbing machine, the use of hobbing gear processing, mainly for mass production.
Gear shaper: similar to hobbing, but using gear shaper cutter for cutting gears, suitable for gears with fewer teeth or requiring special design.
Gear grinding: grinding the gear tooth shape to the required accuracy through the grinder, suitable for high-precision, high surface quality gear.
Gear turning: The shape and tooth shape of the gear are processed with the lathe, which is suitable for small batch and customized production.
Material selection
Carbon steel and alloy steel: often used in spur and helical gears, with good strength and workability. Common alloying elements are manganese, chromium, nickel and so on.
Stainless steel: has excellent corrosion resistance, often used in some special gears, such as gears working in corrosive environments.
Cast iron: Low cost, suitable for small and medium-sized gears, especially at low loads.
Engineering plastics and composites: used in special applications such as low noise and light load.
Gear machining accuracy
Tooth shape accuracy: refers to whether the tooth shape meets the design requirements, the commonly used standards are DIN standards.
Pitch accuracy: that is, the pitch consistency of each tooth of the gear.
Meshing accuracy: the smoothness and noise of gear meshing, often improved by grinding and other processes.
Introduction: CNC (Computer numerical Control) metal products refer to metal parts or products manufactured by CNC machine tools. CNC technology has the characteristics of high precision, high efficiency and high automation, which is suitable for the production of metal products with complex shapes and high precision requirements.
Advantages:
Strong complexity: It can process complex surfaces and geometric shapes, such as internal and external threads, asymmetric structures, precision holes, etc.
Multi-material application: can process a variety of metal materials.
Batch consistency: CNC machining ensures consistency in mass production and effectively avoids manual processing errors.
Excellent surface quality: high surface finish after processing, suitable for direct use or subsequent surface treatment (such as polishing, electroplating, anodizing, etc.).
Technological Process
Design and programming: using CAD software to design parts, using CAM software to generate CNC machine tool processing program.
Material preparation: Select appropriate metal materials according to product requirements.
Roughing: Remove excess material to form a preliminary outline.
Finishing: To design dimensions, ensuring high precision and quality surfaces.
Quality inspection: Using measuring tools (such as coordinate measuring machines) to test product accuracy.
Surface treatment (optional) : According to product requirements, oxidation, electroplating, sandblasting and other surface treatment.
Material selection
Aluminum (6061, 7075, etc.)
Stainless steel (304, 316 etc.)
Titanium alloy
Copper and brass
Tool steel
Introduction: Brass is an alloy composed of copper and zinc that has excellent mechanical properties and corrosion resistance. Through CNC machining, brass can be precisely machined into a variety of complex shapes of parts and products, widely used in many industries.
Advantages:
High precision:
CNC (Computer numerical control) machining can achieve micron-level machining accuracy, ensuring that the shape and size of brass parts meet the design requirements.
Excellent material properties:
Corrosion resistance: Brass has good oxidation and corrosion resistance in air and water, suitable for use in humid environments.
Electrical conductivity: Excellent electrical conductivity, is the ideal material for the processing of electrical components.
Machinability: Brass texture is flexible and has good machinability, high processing efficiency.
Beautiful appearance: Brass has a unique metallic luster, smooth surface, can be polished, electroplating and other surface treatment to improve the appearance.
Technological Process
Design and programming: Use CAD/CAM software to design products and generate CNC programs.
Material preparation: Select the appropriate brass material.
CNC machining: through turning, milling, drilling, tapping and other processes to complete the processing.
Surface treatment: such as polishing, sandblasting, electroplating, oxidation treatment, etc., to improve durability and beauty.
Inspection and packaging: After strict quality inspection, packaging and delivery.
The surface treatment of brass CNC machining products
Polishing: Enhances shine and texture
Plating: provides additional protection (e.g. nickel plating, gold plating, etc.)
Brushed: Produces a fine textured effect
Sandblasting: Adds a matte finish
Introduction: Plastic bars are one of the high-performance materials used in numerical control machining (CNC) and are often used to manufacture complex parts, prototypes and functional components. It has good machinability, light weight, high strength and chemical corrosion resistance, and is an indispensable material in industrial and consumer goods manufacturing. CNC machining can accurately process plastic bars into various shapes, including parts components, molds, engineering structures, etc., which are widely used in aerospace, medical devices, automotive industry and electronic equipment.
Advantages:
High precision: CNC machining can achieve micron-level accuracy to meet the design needs of complex parts.
Rapid prototyping: Plastic bars do not require additional molds in CNC processing, allowing rapid prototyping.
Diversified design: CNC equipment can be processed in different shapes and sizes to meet diverse production needs.
Strong consistency: mass-produced parts have consistent quality and performance.
High material utilization: CNC machining reduces material waste through efficient arrangement and optimized cutting path.
Several common types of plastic bars for CNC machining and their characteristics:
POM (polyformaldehyde)
Features: High strength, low friction coefficient, good wear resistance.
Application: gear, bearings, sliders and other mechanical transmission parts.
PEEK (Polyether ether ketone)
Features: Excellent high temperature performance, strong chemical resistance, anti-fatigue.
Applications: Aerospace, medical and high-end equipment components.
PTFE (polytetrafluoroethylene)
Features: Very low friction coefficient, high temperature resistance, strong chemical inertness.
Applications: seals, insulation materials, corrosion-resistant parts.
ABS (Acrylonitrile-butadiene-styrene)
Features: high toughness, easy processing, low cost.
Applications: Industrial housing, bracket, pipe assembly.
Nylon (PA)
Features: Good impact resistance, wear resistance, rigidity and toughness balance.
Application: construction machinery parts, gaskets, gears.
Introduction: CNC (Computer Numerical Control Machining) is a high-precision, automatic processing technology, widely used in the field of plastic sheet processing. With CNC machining, plastic sheets can be cut, carved, punched or shaped according to design requirements to meet the needs of a variety of industrial and commercial applications.
Advantages:
High precision: CNC equipment can precisely control the cutting path, the error is usually within ±0.1mm.
Complex shape processing: can achieve the traditional process can not complete complex geometric shapes, such as curved surface, groove, hollow and so on.
Automation: Through computer program control, batch processing can be achieved, improve efficiency and reduce manual operation errors.
High surface finish: the CNC cut edges are neat without further grinding.
Versatility: drilling, engraving, chamfering and other processes can be completed to meet different needs.
Technical Process
Design drawings: Use CAD or CAM software to design product models.
Write the program: according to the design requirements, the file is converted into CNC code that can be recognized by CNC equipment.
Material preparation: Select the appropriate plastic sheet according to the processing requirements.
Machining operation: The plate is fixed on the work table, and the cutting or engraving is completed by CNC equipment.
Post-treatment: cleaning, polishing or assembly of the product.
Type of plastic sheet
Acrylic Sheet (PMMA)
Advantages: high transparency, good luster, easy to cut and carve.
Applications: billboards, display stands, light boxes, decorations, etc.
Polyethylene sheet (HDPE/LDPE)
Advantages: chemical corrosion resistance, high flexibility.
Application: chemical container, food equipment, conveying pipeline.
Polypropylene sheet (PP)
Advantages: high temperature resistance, light weight, good strength.
Applications: Medical equipment, industrial components, storage tank linings.
Polycarbonate sheet (PC)
Advantages: high strength, impact resistance, good weather resistance.
Application: Safety cover, window material, protective screen.
Polyvinyl chloride sheet (PVC)
Advantages: strong processing, low price.
Application: building formwork, signage, piping system.
Introduction: CNC (Computer numerical Control) machining is a high-precision, automated manufacturing method capable of handling a wide range of materials, such as metals and plastics.
Advantages:
High precision and consistency: numerical control technology guarantees the stability of product quality.
Fast manufacturing: Suitable from prototype to mass production.
Material diversity: Almost all common metals and plastics can be processed.
Low error rate: Computer control reduces the error of manual intervention.
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