Vcm Method for making shrapnel

The utility model relates to the field of automatic focusing motor, in particular to a VCM shrapnel.

The technical background of voice coil motor (Voice Coil Motor) VCM, has the advantages of small volume, low power consumption and low price, suitable for electronic products (such as digital camera, mobile phone, digital camera etc.) in the actuator (see Design Of A Voice Coil Motor Used In The Focusing System Of A Digitalvideo Camera, Magnetics IEEE Transactions, On Volume 41, Issue 10, Oct. 2005Page (S): 3979-3981). With the rapid development of electronic product technology, the requirement of automatic focusing for electronic products is becoming higher and higher. VCM shrapnel plays an important role in automatic focusing. At the same time, the VCM shrapnel requires high machining accuracy, and the smaller the size tolerance of VCM shrapnel, the better the autofocus effect. Therefore, how to improve the quality of VCM shrapnel has become an important problem to be solved urgently by technicians in this field.

The utility model solves the technical problem of the utility model is to provide a VCM shrapnel, technical problem solved by the utility model to achieve a VCM spring plate adopts the following technical scheme, shrapnel has a flat, geometric center plate is provided with a through hole, the through hole to make it through the lens light through shrapnel flat; has a through hole around and away from the hole and a frame around the hole and the elastic part near the hole in the box and is located between the outer and inner frame of the frame; the four corners are respectively provided with a positioning hole, and the inner frame contact site set to the wave shape along the longitudinal center plate frame; symmetrical line One divides into two. state of separation; the inner frame plate is arranged horizontally along the center line two toward the through hole and through hole connecting convex, flat along the center line longitudinal opening two toward the through holes and the through hole is connected with The mouth and two long short convex concave convex toward the frame while facing the through hole and through hole connecting port, the inner frame and the longitudinal plate along the center line from One divides into two. is antisymmetric state of separation, the same side of the separation of the inner frame and the outer frame are connected with each other. In the utility model, the production of VCM photochemical etching technology of shrapnel, photochemical etching can guarantee VCM shrapnel flatness; structure change by photochemical etching etching liquid chemical composition and etching equipment, achieve higher machining precision. In the utility model, the VCM fragment by MX215, is a high nickel tin copper alloy, five alloy containing Ag, Pt, Au, Ni, Cu and other precious metals, is the most excellent electrical contact materials, conductive ability, stable contact resistance, corrosion resistance, high reliability, strong elasticity. In the utility model, the production of VCM photochemical etching technology of shrapnel, photochemical etching technology is the core ratio, adjust and control the etching solution composition, etching liquid consumed Fe3+ is adjusted by adding some dynamic chemical etching, the control speed is constant, the higher dimensional precision etching parts. In the utility model, the production of VCM photochemical etching technology of shrapnel, increase filter system in traditional exposure system, and the photosensitive film reacts with light into parallel light; the nozzle spraying system arrangement of etching to cross arrangement, boom angle from 90 degrees to 60 degrees, and instead of single control pressure; increase the circulation system of etching solution in apparatus. The beneficial effect of the utility model adopts the high nickel tin copper alloy material with conductive ability, stable contact resistance, corrosion resistance, high reliability, flexibility than beryllium bronze; by photochemical etching technology in the production process to ensure the smoothness of the VCM shrapnel through structural change; photochemical etching etching solution and etching chemical composition the equipment, to achieve higher machining precision; in order to improve the quality of the VCM shrapnel smell.