JKB List of Products and Services

[ Challenges of Conventional Technology ] To process a sphere from a flat sheet, an opening is necessary somewhere, making it impossible to form using other methods, including pressing. Therefore, a process of combining and welding two hemispherical parts was required. [ Solutions Achieved by JKB ] Successfully manufactured a completely sealed hollow sphere from a single flat sheet using pressing. This made it possible to reduce the number of parts by half and eliminate the assembly and welding process of two components.

• Other machine elements

[ Challenges of Conventional Technology ] The processing of a full-circle sharp edge shape (needle tip shape) could not be addressed by traditional press processing. In lathe processing, only about 2 to 3 good products could be produced out of 1000, and grinding processing became extremely expensive, making it impractical for use as disposable parts. [ Solutions Achieved by JKB ] By developing a method to shape using press processing, it became possible to supply products at a cost less than one-thousandth of that of grinding processing, enabling the practical application of the product.

• Sensors

[ Issues with Conventional Technology ] Due to the fine mesh shape with a plate thickness of 0.2mm, hole diameter of 0.2mm, and rib width of 0.1mm, problems such as mesh breakage and deformation of hole shapes occur when processing with pressing. It was not possible to achieve processing without changing to a thicker plate or a coarser mesh. [ Solutions Achieved by JKB ] Successfully pressed the mesh without breakage or deformation of hole shapes, achieving not only high precision but also the commercialization of thin plates and fine meshes.

• Other measurement, recording and measuring instruments

[ Challenges of Conventional Technology ] Due to the shape of having V-shaped blades inside a high roundness cylindrical form, it is difficult to achieve precision in forming and roundness with conventional methods, and it could only be composed of two parts. [ Solutions Achieved by JKB ] We secured a roundness of less than 0.1mm using progressive stamping and successfully incorporated V-shaped blades inside the cylindrical form, resulting in a reduction of the number of parts by half and a decrease in the process of assembling and welding two parts.

• Other electronic parts

[ Challenges of Conventional Technology ] Due to the requirement for high flatness of 0.2 mm for precision machined products, wire cutting was used, which resulted in high costs and made it impossible to use as disposable parts. [ Solutions Achieved by JKB ] By reducing the thickness of the material compared to conventional products and successfully press processing with a flatness of 10 μm, we achieved cost reduction, contributing to the potential for disposable parts and the expansion of research.

• Other electronic parts

[ Issues with Conventional Technology ] When forming with press processing, warping occurs, and in order to achieve high flatness, it is necessary to perform polishing treatment in a subsequent process, resulting in additional process costs. [ Solutions Achieved by JKB ] Successfully processed with a flatness of 10μm using press processing, reducing the polishing treatment process in the subsequent steps, and achieving lower costs through increased precision.

• Other electronic parts

[ Challenges of Conventional Technology ] Due to fine processing, conventional etching methods were used, resulting in high costs. Additionally, there was significant variation in precision. [ Solutions Achieved by JKB ] Successfully performed progressive press processing to create 121 holes within the area of a 1 yen coin, with a hole pitch tolerance of less than 3μm and high precision. Achieved a cost reduction to one-tenth of the conventional methods.

• filter

[ Challenges of Conventional Technology ] There was a need for high-precision punching and bending of materials with a thickness of 0.06mm, making processing with a press difficult. [ Solutions Achieved by JKB ] Achieved high-precision product manufacturing with a minimum dimensional tolerance of ±10μm using progressive presses, successfully reducing the size and weight of the products.

• Other electronic parts

[ Challenges of Conventional Technology ] It is a continuous processed product made of SUS material with a complex shape of drawing and bending, which could not be formed using conventional pressing methods due to material breakage. [ Solutions Achieved by JKB ] Using a method that is not constrained by the concept of conventional pressing, continuous processing of complex shapes of drawing and bending in SUS material was realized through progressive pressing, successfully commercializing and mass-producing it for the first time in Japan.

• Other machine elements

[ Challenges of Conventional Technology ] In conventional press processing methods, the processed cross-section becomes rough, and in order to achieve a high precision surface roughness, cutting processes have been used, resulting in high costs due to single-item processing. [ Solutions Achieved by JKB ] Through press punching processing, we successfully finished the processed cross-section to a high precision surface roughness level comparable to cutting processes. By transitioning from cutting processes to this method, we were able to reduce costs.

• Other electronic parts

[ Challenges of Conventional Technology ] The material is an amorphous alloy, and due to its high hardness, continuous processing through press working was difficult. Furthermore, for laminated bonding, the lamination of thin sheet press products could only be achieved through low-productivity methods such as adhesives. Methods like riveting for laminated bonding were not applicable to thin sheets. [ Solutions Achieved by JKB ] Successfully manufactured ultra-high precision molds, enabling continuous processing of high-hardness materials. Additionally, by realizing laminated bonding through laser welding, improvements in productivity and quality were achieved, and it was successfully demonstrated to laminate and bond 20 press products using laser welding without altering the metal properties.

• antenna

[ Issues with Conventional Technology ] The material is a clad material of SUS and copper, and since the bending characteristics differ between the front and back surfaces, distortion occurs during bending processing, making high-precision processing and forming difficult. [ Solutions Achieved by JKB ] Successfully achieved high-precision punching and bending processing through progressive press processing, resulting in high-precision punching and bending of the clad material.

• Other Connectors

[ Challenges of Conventional Technology ] The product features a curled arm shape inside the hole at its center, requiring the insertion of a fine mold into the hole for molding and high-precision processing. Traditionally, even the design and manufacturing of progressive molds were impossible. [ Achievements by JKB ] Through the design and manufacturing of fine molds, we successfully processed a curled arm shape inside the hole at the center of the product using progressive pressing, and furthermore, we achieved a bending rate tolerance of ±30μm for the curled shape of the arm.

• Other electronic parts

[ Issues with Conventional Technology ] UNDER CONSTRUCTION [ Solutions Achieved by JKB ] UNDER CONSTRUCTION

• Other electronic parts

[ Issues with Conventional Technology ] Conventional resin molding has problems such as low productivity and the inability to process with high precision. [ Solutions Achieved by JKB ] By applying unique metal press processing technology, we successfully processed PET material with a thickness of 0.1mm into a ring shape with high concentricity and without burrs, achieving high precision and cost reduction.

• Other electronic parts

[ Challenges of Conventional Technology ] Due to the difficult shape that requires a product connection part for material feeding in progressive presses, it could only be addressed through low-volume production using single-stroke presses. [ Solutions Achieved by JKB ] Achieved processing with progressive presses, successfully reducing costs and enabling mass production.

• Other electronic parts

[ Issues with Conventional Technology ] It is necessary to process the parallelism of side B to be within 0.1mm relative to side A, but there are four bending operations in the connecting part between side A and side B, which made it impossible to ensure parallelism accuracy. [ Solutions Achieved by JKB ] Successfully processed the bending accuracy in one operation using a progressive press to 0.02mm. As a result, the parallelism of side A and side B was also cleared to be within 0.1mm, achieving high precision.

• Other machine elements

[ Issues with Conventional Technology ] There are slits from the side to the bottom, and with conventional pressing methods, the slit shape becomes deformed, making it difficult to ensure dimensional accuracy during forming. [ Solutions Achieved by JKB ] Successfully achieved processing with progressive presses, ensuring high precision slits from the side to the bottom in the drawing process.

• Other electronic parts

[ Challenges of Conventional Technology ] The material is Inconel, which is difficult to process, and since it is a continuous processed product with a complex shape of drawing and bending, conventional pressing methods resulted in mold damage or material breakage, making shaping impossible. [ Solutions Achieved by JKB ] By using a method that is not constrained by the conventional concept of pressing, we successfully achieved continuous processing of the complex shapes of drawing and bending on the difficult-to-process material Inconel using progressive pressing.

• Other machine elements

[ Challenges of Conventional Technology ] A projection for welding is required at a part 0.3mm from the edge, which was difficult to form using conventional die pressing methods. [ Solutions Achieved by JKB ] Successfully manufactured a mold component of 0.3mm and achieved productization through progressive die processing.

• Other electronic parts