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Technical Application #3 - Electrical Discharge Machining - Wire EDM: The Top Choice for Complex Part Processing4
https://www.herbao.com.tw/en/ HER BAO MACHINERY CO., LTD.
HER BAO MACHINERY CO., LTD. 1 F., No. 10-59, Yuangang, 2nd Neighborhood, Yuangang Vil., Yuanli Township, Miaoli County 35852, Taiwan (R.O.C.)
  How to Maintain a CNC 4th-Axis Rotary Table?Complete Guide from Disassembly and Cleaning to Precision Inspection As automation and precision motion technology continue to evolve, the 4th-axis rotary table has become an indispensable component in CNC machining and automated production. To ensure long-term precision and stable performance, regular maintenance by the original manufacturer is essential to guarantee product quality and safety.Take for example the 4th-axis rotary table manufactured by Herbao Machinery. This unit has operated continuously for over a decade, paired with a KUKA robotic arm in a 24/7 automated production line. After being returned to the factory for thorough maintenance and precision inspection, it continues to deliver excellent performance and accuracy—showcasing outstanding durability and product quality.In this article, we review the complete maintenance process, from initial diagnostics to disassembly, cleaning, reassembly, and final precision verification, highlighting every detail and step of the professional workflow.  Comprehensive Diagnostics & Equipment Disassembly The process begins with high-precision optical angle inspection using a HEIDENHAIN system to evaluate the current load and accuracy of the returned equipment. This allows engineers to analyze the condition of the unit and plan targeted maintenance.After safely removing the protective covers, wiring, and motor, the main components—including the spindle, worm shaft, worm wheel, motor mount, pulleys, and various parts—are carefully disassembled by professional technicians under strict safety protocols.   Centralized Cleaning & Component Reassembly  Once all components are removed and undergo preliminary cleaning, they are placed into an automated high-pressure cleaning system with heat treatment to remove oil residue and dust. Detailed manual wiping is then performed to ensure complete cleanliness. Critical motion components such as the spindle, worm shaft, and worm wheel are pre-assembled, followed by installation of the main housing and rotary disk as part of the initial reassembly phase.  Precision Calibration & Verification  After reassembly, precision verification is performed on all rotational components—including concentricity, runout, perpendicularity, and angle positioning. These are calibrated using the HEIDENHAIN optical angle measuring device to ensure the restored equipment meets original factory standards.Protective covers and wiring are reinstalled, and the final performance verification and functional assessment are completed before the equipment is returned to the customer.  Professional Maintenance is Key to Sustained Performance  Herbao rotary tables are engineered for durability and stability, capable of maintaining high precision even under long-term operation. With regular inspections and professional maintenance provided by the original manufacturer, equipment lifespan can be significantly extended to ensure long-term, stable production.Herbao's service team offers factory-authorized repairs, replacement parts, and precision calibration to keep your machines in optimal condition—ensuring your production line continues to operate efficiently and at the highest quality standards.For more insights into real-world 4-axis and 5-axis applications and technical knowledge, visit our website, follow our social media accounts, or subscribe to our YouTube channel to stay up-to-date with our latest case studies and practical insights. ( Further Reading: Rotary Positioning Table Calibration: CMM as an Alternative to Laser Inspection ) Herbao Machinery continues to pursue technological innovation, providing customers with professional and reliable solutions.For technical inquiries or further information, please contact us! https://www.herbao.com.tw/en/hot_519124.html Knowledge Sharing #8 - How to Maintain a CNC 4th-Axis Rotary Table? Complete Guide from Disassembly and Cleaning to Precision Inspection 2025-07-10 2026-07-10
HER BAO MACHINERY CO., LTD. 1 F., No. 10-59, Yuangang, 2nd Neighborhood, Yuangang Vil., Yuanli Township, Miaoli County 35852, Taiwan (R.O.C.) https://www.herbao.com.tw/en/hot_519124.html
HER BAO MACHINERY CO., LTD. 1 F., No. 10-59, Yuangang, 2nd Neighborhood, Yuangang Vil., Yuanli Township, Miaoli County 35852, Taiwan (R.O.C.) https://www.herbao.com.tw/en/hot_519124.html
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Home Information Technical Application #3 - Electrical Discharge Machining - Wire EDM: The Top Choice for Complex Part Processing [2025-01-03]

Links：https://youtu.be/nbn5lwEc8og

 

Electrical Discharge Machining - Wire EDM
The Top Choice for Complex Part Processing


 What is Wire EDM？ 
Wire EDM is a thermal process widely applied in the precision manufacturing of parts across various industries. This section delves into the functions of Wire EDM and its role in the manufacturing sector, especially when paired with rotary positioning tables.

 Wire EDM Process 

Also known as EDM or WEDM, Wire EDM is a precise machining method that uses thermal energy to remove material from a workpiece. Known by various names such as spark erosion and wire erosion, the process involves a fine metal wire and deionized water to cut metal and prevent rusting. The wire, usually made of brass or layered copper, acts as the tool electrode and follows a pre-defined path to shape the workpiece.
 History of Wire EDM 

The phenomenon of electrical discharge erosion was first observed in 1770 by British physicist Joseph Priestley, who termed it electrical discharge erosion. In 1967, the Soviet Union developed the first commercially available digital-controlled Wire EDM machine.

 
 Types of Wire EDM 

Wire EDM is categorized into fast wire, medium wire, and slow wire EDM. Fast wire EDM operates at speeds of 6 to 12 m/s, with high-speed reciprocating movement of the electrode wire but lower cutting precision. Medium wire EDM, an evolution of fast wire EDM, introduces frequency control for multiple cuts, a newer process developed in recent years. Slow wire EDM features a wire speed of 0.2 m/s with low-speed unidirectional movement, offering high cutting precision.

Types and Sizes of Wires Used in Wire EDM

Wire EDM uses metal wires with diameters ranging from 0.0008 to 0.013 inches. Thinner wires require lower power settings and cut at slower speeds. Commonly, brass wires with a diameter of 0.010 inches are used.
Shape of Workpieces

Wire EDM can cut small and complex shapes. For handling multiple flat parts, stacking workpieces can enable efficient, unattended batch processing.

Materials for Wire EDM

This technology is extensively used in various industries. Pre-hardened mold steel is ideal for CNC Wire EDM, maintaining shape integrity without post-machining heat treatment. Titanium, known for its excellent conductivity, is well-suited for Wire EDM, generating minimal heat during the process and maintaining dimensional accuracy. Austenitic stainless steel, with its corrosion resistance and high thermal conductivity, ensures tool sharpness and prevents thermal damage. Tungsten and molybdenum, with high melting points, can withstand the high temperatures of EDM.

Applications of Wire EDM 

Wire EDM technology, combined with rotary positioning tables, finds broad applications across industries.

Component Processing

In conponent processing industries, Wire EDM can manufacture parts with precise tolerances and complex shapes. High-precision rotary positioning tables enhance the ability to machine spiral and gear-like parts, acting as work exchange tables for accurate multiple part processing.

Medical Devices

Wire EDM offers the precision needed for producing complex medical instruments, ensuring the efficacy and compatibility of medical devices by meeting stringent regulations.

Electronics

Wire EDM effectively produces microelectrodes used in microelectronics for circuits and sensors, where precise tolerances are critical for functionality.

Mold Tooling

Wire EDM can rapidly shape mold inserts, ensuring accurate reproduction of intended plastic parts. It’s also used to make stamping dies, extrusion molds, cutting punches, and more.

 Conclusion 

Wire EDM is a precise and efficient machining process that, when paired with rotary positioning tables, expands the range and scope of processing capabilities, making it ideal for various industries' complex shapes. Compared to many other manufacturing processes, it offers greater accuracy, efficiency, and cost-effectiveness, enhancing manufacturing competitiveness.

( Further Reading: Can It Be Used in a Cleanroom? https://www.herbao.com.tw/en/hot_495662.html )




Herbao Machinery continues to drive innovation, providing more professional and reliable solutions to our clients. For any technical questions, please feel free to contact us!

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