For special internal gears that are difficult to prepare dedicated tools for, we will consider individual and prototype non-standard tooth shapes based on drawings and tooth shape data.
At Hanshin Seiko Co., Ltd., we can consult on wire-cut electrical discharge machining for special internal gears and non-standard tooth profiles. For contours that are difficult to handle with standard cutting tools, as well as for single items, prototypes, and small lot products where preparing dedicated tools is burdensome, we will consider machining methods based on drawings and tooth profile data. In addition to basic conditions such as the number of teeth, module, and pressure angle, we will confirm the tooth thickness, tooth groove width, tooth bottom shape, and the positional relationship between the tooth profile center and the reference. Based on the CAD data of the finished contour and the drawings that specify dimensions and tolerances, we will inform you of the feasibility of machining. Please also consult us regarding internal gear machining of hardened materials and high-hardness materials. We will confirm the material, plate thickness, tooth width, required precision, and inspection conditions. When inquiring, please include the purpose of the prototype, assembly confirmation, engagement and operation evaluation, as well as information about the counterpart gear.
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basic information
■Main processing method: Wire cut electrical discharge machining ■Target: Special internal gears, non-standard tooth profiles, partial internal tooth shapes ■Basic conditions: Through shape in the axial direction that allows wire passage ■Tooth profile confirmation: Number of teeth, module, pressure angle, displacement, tooth thickness, tooth groove width, bottom radius ■Quality confirmation: Specification of contour, position, and runout, applicable standards, measurement items, necessity of inspection report ■Quantity: Consultations available for single items, prototypes, and small lots *Corresponding tooth profiles, precision, and inspection feasibility will be confirmed individually. *Shapes including helical, crowning, and axial tooth profile variations will be considered separately.
Price information
We will provide a customized estimate based on the material, plate thickness, tooth shape, required precision, inspection conditions, and quantity. Please provide the CAD data of the completed tooth shape along with drawings that include dimensions and tolerances.
Delivery Time
※It varies depending on the confirmation of dental shape data, processing details, inspection conditions, and quantity. Please consult us with the scheduled delivery date and your desired delivery date.
Applications/Examples of results
【Applications and Consultation Examples】 ■ Manufacturing of special internal gears that are difficult to handle with standard tools ■ Custom or prototype parts with non-standard tooth profiles ■ Machining of internal gear contours with different shapes on some teeth ■ Machining to provide teeth on part of the circumference ■ Components for assembly and meshing verification with counterpart gears ■ Internal gear machining on materials after hardening Please inform us of the intended use, such as for shape verification, operational evaluation, or load testing. Strength, lifespan, and transmission performance require separate design verification and evaluation from contour machining.
Company information
Hansei Seiko Co., Ltd. is a precision metal processing company founded in 1948, based in Kobe City, Hyogo Prefecture. We offer integrated processing services centered around wire cut electrical discharge machining, shape electrical discharge machining, and fine hole electrical discharge machining, as well as machining, polishing, finishing, and measurement. We welcome inquiries for precision parts, mold components, jigs, test pieces, and more, whether for single items, prototypes, or small lots. In addition to processing hardened steel, carbide, and stainless steel, we also handle contour machining of thick parts, key grooves, fine slits, and complex shapes. We confirm material, shape, required precision, and application, and consider processing conditions and processes. This reduces the burden of arranging multiple processing locations and supports part manufacturing. Based on the principle of "making according to the drawings," we conduct inspections and measurements in-house to confirm the finish before shipping. Based in Kobe and Hyogo, we accept processing inquiries and quotation requests from across the country. If you have parts you are struggling to process or drawings for which you would like to consider methods and processes, please feel free to consult with us. https://www.hansei.co.jp/
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