◆Simultaneous grinding of inner diameter and seat surface using 2 spindles◆Fuel injection nozzle
■Industry: Automotive (Prototype) / Semiconductor / Robotics
In the valve opening and closing mechanism of the fuel injection system, the precision of the seat surface is a very difficult part to process, as it affects the sealing performance under high pressure. We addressed this with the SIG-2II, which features the following: - During the grinding of the seat surface, we switched from conventional simultaneous two-axis control to control with only one axis that moves parallel to the seat surface, eliminating motion errors from one axis. - By using a two-spindle arrangement, we achieved high precision coaxiality by simultaneously processing the inner diameter and the seat surface in one chuck. 【Processing Results】 Material: SUS420J2 (HRC50-55) Inner diameter roundness: 0.44μm, coaxiality: 1.54μm Seat surface roundness: 0.23μm, seat surface runout: 0.73μm 【Photo (Equipment)】 SIG-2SII (Seiko Instruments) *For more details, please refer to the PDF document or feel free to contact us.
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Reliable quality is a given. We are making that given even more of a given. By thoroughly managing quality in all processes from order receipt, design, processing, assembly, inspection, to delivery, we create reliable quality that can be adopted with confidence. In 2002, we obtained the ISO 9001:2000 certification from TÜV SÜD Japan, which is highly regarded internationally. We see this as a milestone and continue to strive to make reliable quality even more of a standard.