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Metal sensor parts processing
Application & Usage
Mechanical Processing Technology
- Turning: For some metal sensor accessories with a rotating body shape, such as a cylindrical sensor probe housing, turning is a common processing method. Through the rotational motion of the lathe and the linear feed motion of the tool, the metal blank is processed into the required size and shape, and a higher dimensional accuracy and surface finish can be obtained, such as turning a stainless steel bar into a proximity sensor probe housing with an outer diameter accuracy within ±0.01mm.
- Milling: Suitable for processing metal sensor accessories in the shape of planes, grooves, gears, etc. For example, when making the mounting base of the sensor, various shapes of mounting grooves and fixing holes can be processed on the metal plate through the milling process to meet different installation requirements. Milling can ensure high flatness and position accuracy, and the general flatness can be controlled within 0.02mm.
- Drilling: Used to process various holes on metal sensor accessories, such as mounting holes, ventilation holes, etc. The drilling machine drills the required holes on the workpiece through the rotation and axial feed motion of the drill bit. In order to ensure the accuracy and quality of the hole, different types of drills such as twist drills and reamer drills are usually used with appropriate cutting parameters. For example, when processing the mounting hole of the temperature sensor, the hole diameter tolerance can be controlled within ±0.05mm.
Stamping Processing Technology
- For some metal sensor accessories with simple shapes, small sizes and large batches, such as metal springs, contact sheets, etc., stamping processing is an efficient production method. The metal sheet is pressed by a punch and a mold to cause plastic deformation to obtain the required shape and size. Stamping processing has the advantages of high production efficiency, high material utilization rate, and good product consistency. For example, dozens or even hundreds of metal spring accessories can be stamped out per minute, and the dimensional accuracy can be controlled within ±0.1mm.
Casting Processing Technology
- When the shape of the metal sensor accessories is more complex and there are certain requirements for mechanical properties, casting technology is a feasible option. For example, some large sensor housings or accessories with complex inner cavity structures can be made by sand casting, investment casting and other methods. The casting process can produce parts with complex shapes, but it is necessary to pay attention to controlling casting defects such as pores and shrinkage holes to ensure the quality and performance of the accessories.
Welding Processing Technology
- In the manufacture of metal sensor accessories, welding processes are often used to connect different metal parts together, such as welding the sensor probe to the connecting wire, welding the metal shell to the mounting bracket, etc. Common welding methods include arc welding, resistance welding, laser welding, etc. Different welding methods are suitable for different materials and structural requirements. For example, laser welding has the advantages of concentrated energy, fast welding speed, and good weld quality. It is suitable for metal sensor accessories with high requirements for welding accuracy and appearance. The weld width can be controlled within 0.2mm.
Surface Treatment Technology
- In order to improve the corrosion resistance, wear resistance, conductivity and other properties of metal sensor accessories, as well as to meet the appearance decoration requirements, surface treatment is usually required. Common surface treatment processes include electroplating, chemical plating, anodizing, spraying, etc. For example, electroplating the metal shell of the sensor with chrome can not only improve its corrosion resistance, but also obtain a bright and beautiful appearance. The thickness of the chrome plating layer is generally between 0.02mm-0.05mm.
Precision machining process
- For some metal sensor accessories with extremely high precision requirements, such as high-precision optical sensor reflectors, precision machining processes are required. For example, ultra-precision turning, grinding, lapping and other processes can control the surface roughness of accessories to the nanometer level and the dimensional accuracy to the micrometer level or even higher to meet the strict requirements of the sensor for optical performance and accuracy.