Processing product characteristics
Material: 304 stainless steel (aerospace-grade corrosion-resistant material)
Key features: 3,180 microholes with a diameter of 2 mm and a depth of 30 mm (depth-to-diameter ratio of 15:1)
Workpiece size: Refrigerator end plate with a diameter of 192 mm and a thickness of 30 mm
Industry pain points and challenges
A. Background of aviation parts processing
Aerospace engine parts have extremely high coaxiality requirements (±0.01 mm), and traditional double-sided drilling is prone to axis deviation; 304 stainless steel has strong viscosity and is difficult to break chips, which affects the smoothness of the hole wall.
B. Traditional processing defects
Obvious cutting marks: The roughness of the inner wall of the hole Ra＞1.6μm, affecting the fluid sealing
Fast tool wear: The drill bit needs to be replaced every 50 holes, which is costly
Efficiency bottleneck: It takes 330 seconds to drill a single hole, slowing down the production line
MID Solutions: Ultrasonic technology empowers precision manufacturing
Equipment: Multi-purpose ultrasonic green drilling and milling processing center (integrated online monitoring system)
Process: High-frequency ultrasonic vibration cutting technology (20kHz amplitude)
Measured performance breakthrough
Efficiency improvement: Single hole processing time is shortened by 31.8% (225 seconds/hole)
Cost optimization: Tool life is increased by 63 times (3,180 holes/tool)
Quality standard: Hole wall roughness Ra＜0.8μm, coaxiality error ≤0.005mm
