For those who want to reduce the inner corner radius of a square hole. Compatible with a minimum wire diameter of φ0.15mm, and we can also discuss hardened materials.
At Hanshin Seiko Co., Ltd., we accept wire cut electrical discharge machining for square and rectangular holes that require small inner corner radii. Please consult us regarding shapes where the corner rounding becomes significant with end mills, as well as precision corner hole machining for hardened materials. We accommodate wires as small as φ0.15mm. We will review the material, plate thickness, hole width and length, required inner corner radius, and tolerances to consider the machining conditions. We will also check not only the hole dimensions but also the relationship with reference surfaces and other holes, as well as the assembly conditions with counterpart components. For through square holes, we use wire cutting, while for blind holes that require a bottom, we guide you to methods such as shape engraving electrical discharge machining, depending on the shape. Please specify the required R dimensions and allowable ranges on the drawings, and contact us with the quantity and desired delivery date.
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basic information
■Processing shape: Square holes, rectangular holes, and corner holes with small R specified ■Main processing method: Wire cut electrical discharge machining ■Minimum wire diameter: φ0.15mm ■Applicable materials: Conductive materials. Hardening materials and high hardness materials can also be discussed ■Verification items: Material, plate thickness, hole dimensions, inner corner R, positional tolerance, surface roughness ■Closed through holes: A starting hole for passing the wire is required *φ0.15mm refers to the wire diameter. It does not guarantee an inner corner R of 0.075mm. *Processing feasibility and corresponding accuracy will be individually confirmed, including discharge gap and processing conditions.
Price information
We will provide a customized estimate based on material, plate thickness, hole dimensions, inner corner radius, required precision, and quantity. Please provide drawings that indicate the necessary R dimensions and tolerances.
Delivery Time
※It varies depending on the processing content, quantity, and the preparation status of the starting holes. Please contact us with the scheduled delivery date and your desired delivery date.
Applications/Examples of results
【Applications and Consultation Examples】 ■ Small R square hole machining for mold components ■ Precision angular hole machining for positioning jigs ■ Rectangular hole machining for precision machine parts ■ Hole shapes to minimize interference with the corners of counterpart components ■ Angular hole machining for parts after hardening ■ Machining that specifies the positional relationship with reference surfaces and other holes If assembly is involved, please also inform us of the corner shapes of the counterpart components and the necessary gaps.
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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