For square holes and D-shaped holes that cannot be penetrated. Consider processing methods based on the entrance shape and the cross-section in the depth direction.
We can discuss contract processing for blind-shaped holes such as square holes with a flat bottom, D-shaped holes, and special contours. Focusing on shape engraving discharge machining, we will consider the method based on inner corner radii, depth, material, and required precision. Even with the same entrance, the necessary electrodes and processes change for flat bottoms, steps, or partially deep shapes. Please provide a plan view and a cross-section view, along with the bottom shape and the thickness to be left at the bottom of the hole. We will also check whether the electrode can enter from the entrance without interfering with the surroundings. A shape that is wider inside than the entrance cannot always be processed in the usual entry direction. We will confirm the necessary radii, tolerances, and surface roughness from the drawings without assuming a perfect zero radius for inner corners. The image shows the processing concept from the original article.
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basic information
【Construction Method】 Focus on shape engraving discharge, considering cutting and other factors based on drawing conditions. 【Shape Examples】 Stopped square holes, D-shaped holes, notched holes, concave shapes with steps in the depth direction. 【Confirmation Items】 Entrance contour, hole depth, bottom surface/bottom radius, side radius, intermediate cross-section changes, remaining bottom thickness, standards/tolerances/surface roughness. Considerations include electrode shape, entry direction, chip removal, and electrode wear. This does not guarantee compatibility with arbitrary depths.
Price information
We will confirm the entrance, cross-section, bottom shape, material, quantity, tolerances, and necessary electrode production, and provide an individual estimate.
Delivery Time
※We will confirm the drawings, quantities, condition of materials and supplied items, and desired delivery date, and provide guidance including the preparation of the electrodes.
Applications/Examples of results
【Processing Consultation Examples】 Irregular holes in parts that cannot be penetrated, bottom shapes that match counterpart parts, and the addition of concave shapes to parts after hardening. These are examples of applications and do not represent delivery records for specific projects. For supplied items, the positional relationship with existing holes and reference surfaces, as well as the locations that can be held and the current processing state, will also be confirmed.
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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