James A.

Experience

• Mechanical Engineer、Product Manager 、Product Director Han's CNC Science and Technology Co., Ltd. · Full-time Feb 2002 – May 2025 23 yrs 3 mos China A manufacturer specializing in high-precision CNC drilling and routing machines for the PCB industry. These machines integrate mechanics, electronics, computing, pneumatics, and optics, and are designed for high-precision drilling and milling of printed circuit boards.
  Key Responsibilities and Achievements:
  Dec 2006 – May 2007: Led mechanical design and development of the HANS-F6M high-speed PCB drilling machine equipped with full linear motor drives on X, Y, and Z axes, and guided by THK linear rails.
  Max travel speed: X/Y: 80 m/min, Z: 50 m/min
  Acceleration: 6G
  Positioning accuracy: ±0.005 mm
  Repeatability: ±0.0025 mm
  Drilling accuracy: ±0.0254 mm
  June 2002 – June 2010: Responsible for system planning and partial mechanical design of multi-spindle PCB drilling machines (6-head, 7-head models) and 4-spindle routing machines.
• Mechanical Engineer、Vice President of Technology Shenzhen JASTON Technology Co., Ltd. / Shenzhen Transauto Technology Co., Ltd. · Full-time Jun 2010 – Jan 2025 14 yrs 7 mos China Entrepreneurial ventures focused on designing and producing automated screwdriving machines, custom assembly lines, and precision automation equipment. Key clients included leading domestic appliance brands such as Gree, Midea, Joyoung, AUX, and Zhigao. Applications covered automotive electronics, air conditioners, rice cookers, soybean milk machines, and heaters.
  Key Responsibilities:
  Led overall solution planning and feasibility analysis for screwdriving systems and production lines.
  Oversaw core mechanical design and customer technical communications.
  Delivered turnkey automation systems tailored to customer requirements.
• Mechanical Engineer Sidea Semiconductor Equipment (Shenzhen) Co., Ltd. · Full-time Feb 2017 – Aug 2023 6 yrs 6 mos China 1. Fully Automated Chip Sorting System
  Led the development of a high-precision LED chip sorting machine used in post-dicing wafer processing. This system automatically classifies chips based on quality, performance, and product specifications such as brightness, wavelength, color temperature, and voltage—factors that vary even within the same wafer due to process fluctuations.
  Key Performance:
  Minimum chip size supported: 0.075 × 0.127 mm
  Sorting speed: 35 ms/chip
  Throughput: 1.8 million chips per 23-hour cycle
  Accuracy: ±0.0254 mm
  2. Optical Chip Testing System
  Developed a fully automated testing solution for optical chips, capable of measuring electrical and optical parameters including voltage, current, wavelength, and brightness. High-temperature testing functionality available as an optional module.