Processing product features
The processing object is a quartz glass reflective lens with a specification of D408x20.5mm. The core processing requirement is the cavity chamfer grinding process. This lens is a special optical component for astronomical observation equipment and must meet the high-precision standards of 0.02mm contour and Ra0.8μm surface roughness at the same time.
Industry processing pain points
In the field of high-end optical device manufacturing, there are three major technical barriers to quartz glass processing for a long time:
The problem of edge collapse caused by material brittleness (traditional edge collapse amount 0.433mm)
It is difficult to stably meet the standard for non-spherical surface contour accuracy
The risk of sub-surface damage caused by cutting heat accumulation
When a company uses traditional grinding technology, it takes more than 8 hours to process a single piece and still cannot stably meet the roughness requirements. The scrap rate is as high as 35%, which seriously restricts the mass production process of high-end optical instruments.
Innovation of MID Solution
In view of the physical and chemical properties of quartz glass, MID R&D team has implemented two key technological breakthroughs:
Multi-purpose ultrasonic green milling system: integrated axial vibration and radial compensation functions
Variator ultrasonic processing technology: stable amplitude control in the range of 4-6μm
Process upgrade results
Actual production data shows that the solution achieves multi-dimensional performance improvement:
1.Edge collapse control: 0.049mm (reduction of 88.7%)
2.Surface quality: Ra＜0.6μm (25% better than the industry standard)
3.Contour accuracy: 0.015mm (increase of 33.3%)
4.Processing efficiency: single-piece working hours are reduced to 3.2 hours
Especially in terms of heat impact control, the temperature of the workpiece cutting zone drops by 42℃, effectively avoiding potential damage such as microcracks.
【About MID】
With more than 10 years of experience in precision manufacturing, MID has focused on the research and development of special processes such as ultrasonic machining and laser micromachining, serving manufacturing companies in aerospace, optical instruments and other fields, and has now become the preferred solution provider for high-end brittle material processing.
