In the telescopic trolley handle production process, spark machines (Electrical Discharge Machines) are primarily used in mold manufacturing and precision part machining. They are key equipment for ensuring the structural accuracy and surface quality of the trolley handle. The following describes their specific role, operating principle, and importance in tie rod manufacturing:
The Role of Spark Machines
Machining High-Hardness Mold Parts
Telescopic trolley handles are typically made of metal or high-strength plastics, and their manufacturing requires molds (such as injection molds and die-casting molds). Spark machines can process high-hardness materials such as hardened steel and cemented carbide, creating complex cavities and precise holes to meet the high strength and wear resistance requirements of tie rod molds.
Making Complex Structures and Precision Details
Some parts of handles (such as expansion joints, locking structures, and connection holes) have complex shapes that are difficult to achieve with traditional machining. Spark machines, through discharge erosion, can precisely machine complex structures such as irregularly shaped holes, deep grooves, and fine slits.
Ensuring Mold Precision and Surface Quality
Spark machines offer high machining accuracy (up to 0.01 mm) and low surface roughness (Ra values of 1.6 μm or less), effectively improving the assembly precision and surface finish of tie rod molds, thereby enhancing the quality and consistency of the finished product.
Working Principle Overview
Spark machines utilize pulsed discharge to generate high-temperature electric sparks between the electrode and the workpiece, melting, vaporizing, and removing localized metal from the workpiece to form the desired shape. The entire process occurs within a working fluid (such as kerosene or deionized water), which provides cooling, chip removal, and insulation.
Why are spark machines important in trolley handle manufacturing?
Achieving High-Precision Mold Manufacturing
The smooth extension and locking of the telescopic handle depend on the precise structure of the mold. Spark machines are a core piece of equipment used in manufacturing high-precision molds.
Supporting Complex Designs
As trolley handle designs become increasingly complex (mis., multi-section extension, hidden buttons, and lightweight structures), spark machines provide the processing capabilities to realize these designs. Improve Production Efficiency and Product Quality
Spark EDM can process pre-hardened materials, reducing the risk of deformation after heat treatment, shortening mold manufacturing cycles, and improving the efficiency and consistency of tie rod production.
In a word
Although spark EDM does not directly process the trolley handle itself, it plays a crucial role in mold manufacturing and the processing of key components. Its high-precision and high-complexity machining capabilities ensure the structural accuracy, functional reliability, and aesthetic quality of tie rod products. And making it an irreplaceable link in the modern pull handle manufacturing chain.