株式会社南雲製作所 List of Products and Services

Burrs that inevitably occur when using press molds. Are there ways to reduce burrs? Why do burrs occur in the first place...? Many may wonder if it's possible to create molds that produce no burrs at all. If we can minimize burrs, we can enjoy many benefits, such as reducing the time for burr removal and ensuring product accuracy. This document will explain in detail why burrs occur in press molds and what measures can be taken to minimize them. Contents included: ■ Causes of burrs and countermeasures ■ Methods for burr removal ■ Is it possible to achieve burr-free (producing no burrs at all)? ■ Achieving high-precision product processing while minimizing burrs *For more details, please refer to the catalog download below.

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Burrs that inevitably occur when using press molds. Is there a way to reduce burrs? Why do burrs occur in the first place...? Many people may have such questions about whether it's possible to create a mold that produces no burrs at all. If we can minimize burrs, we can enjoy many benefits, such as reducing the time spent on burr removal and ensuring product accuracy. In this document, we will explain in detail why burrs occur in press molds and what measures can be taken to minimize them. Nagumo Manufacturing will be exhibiting at the Kyushu Machine Element Technology Exhibition in Fukuoka, which will be held from November 29 (Wednesday). We look forward to your visit. *For details about the exhibition, please refer to the basic information!

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This time, I will explain "surface roughness," which is essential in metal processing. Drawings always include symbols or indications that specify the desired surface roughness. I will explain what the indicated surface roughness actually means using photographs. Additionally, I will introduce which machine tools can generally achieve what level of surface roughness. When processing a surface, be sure to check if the machine is suitable for the desired surface roughness.

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The term "nested" in molds is something you may have heard of but don't quite understand. Many people might not fully grasp the actual merits and demerits. If you utilize a nested structure mold in the appropriate situations, you can enjoy many advantages. However, there are also cases where it is unnecessary to spend money to create a nested structure. In this article, we will provide a detailed introduction to the situations in which a nested structure is adopted, from the perspectives of merits and demerits.

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"We are troubled by the short lifespan of punch and die for press molds." "We cannot ensure the accuracy of the punch and die." "We want to improve the wear resistance of the punch and die." In response to the voices of our customers that we often hear during our sales activities, Nagumo Manufacturing proposes a processing method that differs from conventional electrical discharge machining. It is common to use carbide and hardened materials for punches and dies, and electrical discharge machining and grinding are the main methods for processing these hard materials. This document introduces the mechanism of electrical discharge machining and the disadvantages that arise from it, and we will propose processing methods aimed at resolving those disadvantages. Our company will exhibit at the Machine Elements Technology Exhibition in Osaka starting October 4th. We sincerely hope you will visit us. *For details about the exhibition, please refer to the basic information!

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Material: Carbide Lot: 1 to 100 pieces Precision: Below 1/1000mm Machining and polishing of carbide. Shape details at two locations: Inner diameter: φ2.5 Depth: 0.9 Bottom R: SR3 Industry: Automotive (prototype) Electronic components Semiconductors We accept orders starting from just one piece of equipment parts or mold parts!

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Lot: 1 to 100 pieces Accuracy: 1/100 to 1/1000 mm Material: Carbide (ultrafine particles) Sample material size: φ6 Machining surface: Machined by cutting on the recessed part and the top surface Features: By performing electrical discharge machining followed by cutting, we reduce the polishing of the discharge surface and the number of machining processes Industry: Automotive (prototyping) Low voltage & home appliances Electronic components We accept orders starting from just one piece of equipment parts or mold parts!

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By switching from electrical discharge machining to cutting machining, we can reduce the polishing of the discharge surface and the processing man-hours! Lot: 1 to 100 pieces Precision: 1/100 to 1/1000 mm We accept orders starting from just one piece of equipment parts or mold parts!

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"I would like to purchase molds from two companies as a BCP measure, so could you provide some consultation?" Recently, we received this kind of inquiry from a customer. Molds are often extremely important in factories where production would stop without them, so it is crucial to have multiple suppliers that can respond immediately when needed. There are cases where the specifications of the mold become a quality bottleneck, such as when a situation arises like, "If we could make the part 2mm smaller, we could proceed with this design, but since the mold couldn't accommodate it, we had to make significant changes to the design." I have heard that recently, some clients are requesting dual sourcing. Our company has a department specialized in technical development that will do its utmost to address your technical issues, so if anything resonates with you, please feel free to contact us. *For more details, please refer to the PDF document or feel free to reach out to us.*

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Clearance (CL) refers to the gap between the punch and die of a mold. CL is set at 4-7% of the material thickness. The range of 4-7% is determined by the thickness of the material. In the PDF materials, we introduce: - Examples of clearance settings by material thickness: t=0.1mm / t=0.05mm / t=2.0mm - The impact of uneven clearance based on material thickness - The benefits of achieving uniform clearance Table of contents: - What is clearance? - How to set clearance - Examples of clearance by material thickness - Benefits of achieving uniform clearance

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Recently, we have received many requests for mold manufacturing from our customers, and to meet those expectations, we have introduced a highly productive machining machine. The Z-axis can cut in increments of 0.1 µm, allowing us to easily achieve a tolerance of ±0.002 mm. The Y-axis can also be controlled by NC, enabling automated groove processing through programming. We accept orders not only for molds but also for individual plates, so please take this opportunity to make use of our services. 【Machining Machine Information】 ■ Manufacturer: Okamoto Machine Tool Works, Ltd. ■ Machine Type: High-Precision Surface Grinding Machine ■ Model: PSG65SA1 ■ Axis Movement: X600mm Y500mm Z410mm ■ Installation Date: October 2022

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In this column, I will introduce the "boat bottom phenomenon"! When you want to punch out terminal shapes like those in the icon, processing each pitch as shown in Figure A results in a smaller area being held down during the punching process. This can lead to the stripper plate being unable to hold the product securely in the narrower areas, causing it to tilt due to the force of the punch coming down. This is known as the boat bottom phenomenon. The product that has tilted ends up resembling a boat bottom, hence the name. To avoid this, while changes in layout are necessary, one possible solution is to use a multiple pitch feed as shown in Figure B. In the case of multiple pitch feeding, a single group is punched out at once (all punches come down simultaneously), leaving no room for the product to tip over, thus preventing such issues. However, on the other hand, this will reduce the spacing between the dies, which raises concerns about the strength of the dies. It is necessary to determine specifications based on strength calculations.

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In the previous columns, we introduced single-station and progressive dies. This time, we will introduce the third type, transfer dies! Transfer dies are molds where multiple single-station dies are arranged in a row. Like progressive dies, they use coil materials (refer to Column 2 for more on coil materials). The movement between single-station dies is facilitated by a fixture called a finger, allowing the process to advance to the next stage. This processing method is automated, making it suitable for mass production. The advantages include the ability to mass-produce due to automation and stable quality. Additionally, it allows for an increased number of processes compared to progressive dies, enabling more complex machining. The disadvantages include the difficulty in designing the transport mechanism to move between single-station dies and the fact that having multiple single-station dies lined up results in a relatively higher cost. Transfer dies are suitable for complex products that require processes such as deep drawing. In the next column, we will introduce the "hull phenomenon"!

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In the previous column, I introduced that there are mainly three types of press molds, focusing on the single-stage mold. In this column, I will introduce the progressive mold! A progressive mold refers to a type that incorporates multiple processing methods, such as punching, bending, and drawing, into a single mold. This processing method sends the material to the next stage with each press, shaping the product. The material used is typically in a rolled form (coil material) and is automatically fed to the next stage. The advantages include improved production efficiency and stable quality due to automation, as well as the ability to perform more complex processing than single-stage molds since multiple processes can be incorporated. On the other hand, a disadvantage is that the mold design and manufacturing are more complex compared to single-stage molds, making the cost of mold production relatively high. Additionally, there is a possibility of the "boat bottom phenomenon," where a shift occurs at the tip of the product. (I plan to cover the "boat bottom phenomenon" and "shift" in a future column!) Products suitable for progressive molds are those that require mass production or complex processing. In the next column, I will explain the "transfer mold"!

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This column is about press molds! There are several types of "press molds." - Single-stroke molds - Progressive molds - Transfer molds The main three types are listed above. This time, I will introduce the "single-stroke mold"! A single-stroke mold is a type of mold that can perform processes such as cutting, bending, and drawing only once with a single mold. The advantages include lower costs compared to other types of molds because there is only one process and the mold structure is not complex, and, for the same reason, it allows for shorter delivery times. In terms of quality benefits, it helps prevent the "hull bottom phenomenon" and the shifting of the product's tip. (I plan to publish a detailed column about the "hull bottom phenomenon" at a later date!) On the other hand, the disadvantages include the tendency for single-stroke molds to have lower productivity compared to other press molds because they are often operated manually, and the limitation of not being able to perform complex processes due to having only one operation. Single-stroke molds are suitable for products with small lot sizes or large sizes. In this first column, I introduced the "single-stroke mold." In the next column, I will explain the "progressive mold"!

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Traditionally, we conducted accuracy inspections using non-contact measuring devices, but we have introduced a method similar to that used by our customers to provide greater peace of mind. We accommodate contact inspections, including parts for automotive molds. Since trace measurements are also possible, you can trust us with the guarantee of high-precision small parts (such as punches, dies, and forged parts). This will contribute to further ensuring accuracy and reducing the man-hours required for acceptance inspections. 【Overview】 ■ Manufacturer: Mitutoyo Corporation ■ Machine Type: CNC Coordinate Measuring Machine ■ Model: STRATO-Apex7106 ■ Axis Travel: x700 y800 ■ Introduction Date: April 2022 * For more details, please refer to the PDF document or feel free to contact us.

• Measurement and Inspection

We would like to introduce a case where a manufacturer of automotive parts solved their challenges by introducing a new machining center and wire electrical discharge machine. The manufacturer was facing issues such as "despite producing punches and dies through three-dimensional machining to accommodate the miniaturization and complexity of products, they were unable to create high-precision products," and "not only were defects occurring, but conventional measuring instruments were insufficient for shape measurement, making it impossible to guarantee accuracy." To address this, they ensured shape measurement that could not be achieved with traditional contact-type tracers by using a laser microscope. 【Overview】 ■ Customer's industry: Automotive parts manufacturing ■ Processing technology: Parts can be processed with an accuracy of ±2μm using the new machining center and wire electrical discharge machine ■ Quality assurance: Introduced three-dimensional measuring instruments (from Mitutoyo, OGP, TESA) and a laser microscope (from KEYENCE) to guarantee shape measurement in the sub-micron order *For more details, please refer to the PDF document or feel free to contact us.

• Measurement and Inspection

At Nagumo Manufacturing, we prevent scrap accumulation and improve productivity by setting appropriate clearances, ensuring machining accuracy, and utilizing adjustment techniques to reduce downtime. We addressed the challenges faced by automotive parts manufacturers who were troubled by frequent downtime due to scrap accumulation. Our company implemented measures against scrap accumulation for these manufacturers. The average occurrence of scrap accumulation, which was happening 9 times a day, was improved to 0, resulting in a reduction in downtime and a significant increase in factory productivity. 【Overview】 ■ Customer Industry: Automotive parts manufacturing ■ Inquiry Details: Frequent scrap accumulation during press processing, causing machine stoppages and inefficiency ■ Proposed Solution: Recommendations for appropriate clearances and changes in part shapes ■ Technology Used: Introduction of a new processing machine for part machining with ±2μm precision ■ Results: Increased productivity *For more details, please refer to the PDF document or feel free to contact us.

• Facility Design

With our dedicated molds, we change tomorrow." At Nagumo Manufacturing, each product is custom-made! Do you have any issues with precision mold component processing or precision mold design? We have a wide range of equipment and can offer proposals from the customer's perspective for the problems you consult with us. This time, we would like to introduce the scale of our factory, our equipment, and our qualifications, and we have released a video that allows you to take a virtual tour of our company. You can view everything from the entire factory to the main equipment, processing sites, and inspection rooms in 360 degrees. Additionally, we will be exhibiting at a trade show in October. If you visit, please stop by our booth! *For details, please check the "Basic Information" section below. [Video Content] - Opening - Introduction to the entire factory - Introduction of various equipment (machining centers, grinding machines, etc.) - Mold assembly and hand finishing - Introduction to the mold design room, technical department, inspection room, and production management room - Other facility introductions We also offer downloadable materials such as "Precision Mold Design and Manufacturing / Component Processing Examples" and "Equipment Information." *For more details, feel free to check the "PDF Download.

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Nagumo Manufacturing Co., Ltd. has introduced a "High-Precision Image Dimension Measuring Instrument." This device combines a tool microscope and a CNC image measuring instrument, allowing anyone to easily perform high-precision measurements. It excels at measuring press samples and items that require repeated measurements, enabling stable measurements without the need for the skill of the measurer or the complicated settings required for 3D measuring instruments. Currently, we have received numerous inquiries for molds, and we have implemented this system to shorten the lead time for sample measurements. It is expected to measure in half the time of the conventional method. 【Inspection Device Information】 ■ Manufacturer: Keyence Corporation ■ Machine Type: High-Precision Image Dimension Measuring Instrument ■ Model: LM-1000/1100 ■ Axis Movement: x200 y100 ■ Repeatability: ±0.1–0.9μm ■ Measurement Accuracy: 0.7μm and above ■ Introduction Date: September 2021 *For more details, please refer to the PDF document or feel free to contact us.

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At Nagumo Manufacturing Co., Ltd., we have introduced a "High-Precision Wire Electrical Discharge Machine." It is one of the largest sizes among wire electrical discharge machines manufactured by Seibu Electric. The processing fluid is water-based, and we use φ0.2 wire. We specialize mainly in plate processing for molds, achieving a pitch accuracy of 0.001mm or better with the high machine precision characteristic of Seibu Electric and temperature control close to that of a constant temperature room. 【Machine Information】 ■ Manufacturer: Seibu Electric Co., Ltd. ■ Machine Type: High-Precision Wire Electrical Discharge Machine ■ Model: SuperMM80B ■ Axis Movement: x800 y600 z230 ■ Installation Date: August 2021 *For more details, please refer to the PDF document or feel free to contact us.

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At Nagumo Manufacturing Co., Ltd., we have introduced the "Ultra-Precision Forming Grinding Machine." With a highly rigid column head and a finely adjusted sliding surface, the flatness accuracy has significantly improved. Additionally, by utilizing the automatic grinding wheel shaping function, the operational efficiency of the factory has increased, allowing us to better meet our customers' delivery requests. The introduction of this equipment has expanded our lineup of ultra-high precision machining for large plates, enabling groove processing and step machining with an accuracy of 0.001mm and beyond. 【Machining Equipment Information】 ■ Manufacturer: Nagashima Seiko Co., Ltd. ■ Machine Type: Ultra-Precision Forming Grinding Machine ■ Model: NSE840-NC ■ Axis Movement: x700 y400 ■ Introduction Date: June 2021 *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces examples of precision mold design and manufacturing, as well as parts processing conducted by Nagumo Seisakusho Co., Ltd. It includes numerous case studies that address challenges such as reducing maintenance time in precision mold design and manufacturing, and improving the lifespan of carbide punches in precision mold parts processing. Additionally, we introduce our installed processing machines, including the "high-precision profile grinding machine" and "high-precision vertical machining center." If you are interested in the processing details or would like to discuss estimates, please feel free to contact us. [Contents] ■ Introduction of installed processing machines ■ Case studies addressing challenges in precision mold design and manufacturing ■ Case studies addressing challenges in precision mold parts processing *For more details, please refer to the PDF document or feel free to contact us.

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A customer in the automotive parts manufacturing industry was facing the challenge of wanting to increase the press rotation speed to improve productivity. In response, we proposed solutions for enhancing the precision of the parts and the precision of alignment. Through new high-speed milling processes and our unique wire electrical discharge machining technology, we achieved a mold dimension and alignment precision of 0.003mm. Additionally, the introduction of high-precision molds allowed for stable quality even when increasing the rotation speed. 【Case Study】 ■ Customer's Industry: Automotive Parts Manufacturing ■ Inquiry: Desire to increase press rotation speed to improve productivity ■ Proposed Solutions: Enhancement of part precision and alignment precision ■ Technologies Used: High-precision part processing and mold alignment technology ■ Results: Improved productivity *For more details, please refer to the PDF document or feel free to contact us.

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The customer, a film processing manufacturer, faced issues where the condition of the products changed with each mold maintenance, affecting quality, and it took time to adjust the molds. In response, we proposed solutions such as high precision of parts and high precision in alignment. Thanks to our high-precision processing and assembly adjustment technology, we achieved molds with high reproducibility, leading to reduced maintenance time and improved product quality, resulting in cost savings. 【Case Study】 ■ Customer's Industry: Film Processing Manufacturer ■ Consultation Details: - The condition of the products changes with each mold maintenance, affecting quality - It takes time to adjust the molds ■ Proposed Solutions: High precision of parts and high precision in alignment ■ Technologies Used: High-precision parts processing and mold alignment technology ■ Results: - Improved product quality - Reduced mold adjustment time *For more details, please refer to the PDF document or feel free to contact us.

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At Nagumo Manufacturing Co., Ltd., we have introduced a "High-Precision Vertical Machining Center." The high-rigidity spindle (BBT40) can handle everything from high-speed rough machining to precision finishing. Additionally, we have adopted a dual-face APC (Automatic Pallet Changer), resulting in a highly productive specification. 【Machine Information】 ■ Manufacturer: DMG Mori Seiki ■ Machine Type: High-Precision Vertical Machining Center ■ Model: NVX5080 ■ Axis Travel: x800 y530 z510 ■ Introduction Date: December 2020 *For more details, please refer to the PDF document or feel free to contact us.

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We record the finished dimensions of all parts. Therefore, when you place an order for replacement parts, we manufacture them with a tolerance of ±1μm compared to the original parts. By simply replacing the parts, we can restore them to a condition equivalent to new, significantly reducing the time required for setup adjustments after part replacement. 【Case Summary】 ■ Customer Industry: Electronic Component Manufacturer ■ Inquiry: Want to reduce the time required for punch and die nesting exchange ■ Proposed Solution: Change the positioning method for punch and die ■ Technology Used: Changed the die nesting keying method to a light press-fit method ■ Results: No adjustments needed after nesting exchange, reducing the time required for replacement by 75% *For more details, please refer to the PDF document or feel free to contact us.

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When extracting thin products, it is necessary to set a significantly narrow punch-die clearance, but it is difficult to reliably achieve the set clearance in tolerance design. However, our company designs components from the design stage to realize narrow clearances, so we can custom-manufacture both fabricated and purchased parts. As a result, we can produce molds that meet the required specifications for the products our customers seek. 【Case Overview】 ■ Customer Industry: Electronic Component Manufacturer ■ Consultation Content: Desire to cut thin products sharply ■ Proposed Solution: Ultra-narrow clearance punching mold ■ Technology Used: Improvement of mold structure and component precision ■ Outcome: Eliminated previously unresolved punching burrs *For more details, please refer to the PDF document or feel free to contact us.

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A consultation was received from an automotive parts manufacturer, stating that they could not punch out fiber materials with molds from other companies, resulting in poor productivity, and they wanted to process with their own molds. In response, we proposed a minimal clearance of 0.003mm and improvements in mold structure and component accuracy. As a result, we were able to punch out the Vectran fiber material (t=0.05mm) due to the difference in clearance. [Case Overview] ■ Customer Industry: Automotive Parts Manufacturer ■ Consultation Content: Unable to punch out fiber materials with molds from other companies ■ Proposed Solution: Minimal clearance of 0.003mm ■ Technology Used: Improvements in mold structure and component accuracy *For more details, please refer to the PDF document or feel free to contact us.

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When processing superhard materials with electrical discharge machining, microcracks due to thermal effects occur during the machining process. These cracks penetrate to a depth of about 20μm, so no matter how much you polish to create a smooth surface, they remain. These cracks can cause wear in punches that are subjected to strong loads. In contrast, milling does not produce any microcracks at all. Milling tools can go down to R0.1, and the flexibility of the machining shapes is very high. 【Case Overview】 ■ Customer Industry: Precision electronic components manufacturer ■ Consultation Content: Want to improve the lifespan of superhard rivet punches ■ Proposed Solution: Transitioning from electrical discharge machining to milling ■ Technology Used: Milling technology for superhard materials ■ Results: The lifespan of the punches increased threefold *For more details, please refer to the PDF document or feel free to contact us.

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We received a consultation from a precision parts manufacturing company stating that it takes a long time to adjust when replacing carbide punches. In response, we proposed switching from electrical discharge machining to milling. As a result, we were able to reduce the adjustment time during punch replacement to one-third. 【Case Summary】 ■ Customer Industry: Precision Parts Manufacturing ■ Consultation Content: Long adjustment time when replacing carbide punches ■ Proposed Solution: Transition from electrical discharge machining to milling ■ Technology Used: Milling technology for carbide materials ■ Outcome: Reduced adjustment time during punch replacement to one-third *For more details, please refer to the PDF document or feel free to contact us.

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A customer from an automotive parts manufacturer consulted us about the need for high-precision machining of a corner radius of R0.05. In response, we proposed oil-cut wire electrical discharge machining. As a result, we achieved the shape machining precision and surface roughness required by the customer, reducing what was expected to be a year-long job to just six months. 【Case Summary】 ■ Customer's Industry: Automotive Parts Manufacturer ■ Consultation Content: Request for high-precision machining of a corner radius of R0.05 ■ Proposed Solution: Oil-cut wire electrical discharge machining ■ Technology Used: High-precision wire electrical discharge machining technology ■ Outcome: Achieved the shape machining precision and surface roughness required by the customer *For more details, please refer to the PDF document or feel free to contact us.

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Our processing technology enables a part and alignment accuracy of ±0.002mm. With the introduction of high-precision components, the positional accuracy during mold assembly is high, resulting in less wear and reduced component consumption. For automotive parts manufacturers, our processing technology has achieved a part and alignment accuracy of ±0.002mm, leading to an increase in component lifespan. [Case Overview] ■ Customer Industry: Automotive Parts Manufacturer ■ Consultation Details: Short mold maintenance cycle and short component lifespan ■ Proposed Solution: High precision of parts and high precision of alignment ■ Technology Used: High-precision part processing and mold alignment technology ■ Results: Increased component lifespan and a 25% reduction in component purchase costs *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce the processing machine "High-Precision Profile Grinding Machine / CAM Image Type Profile Grinding Machine" introduced by Nagumo Seisakusho Co., Ltd. The "High-Precision Profile Grinding Machine" employs a linear motor for the vertical axis, achieving smooth and highly responsive processing. The "CAM Image Type Profile Grinding Machine" is equipped with a zoom-type high-magnification CCD camera with 80x, 125x, 250x, and 500x magnification. At 500x, it is possible to position and measure the accuracy of the workpiece with a precision of 0.5 microns. 【Features of the High-Precision Profile Grinding Machine】 ■ Adoption of a linear motor for the vertical axis ■ Achieves smooth and highly responsive processing ■ Standard equipped with a new type of LED transmitted lighting, making the projected image very clear ■ Capable of wide-ranging and high-precision contour grinding *For more details, please refer to the PDF document or feel free to contact us.

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● There is a request for cost reduction from the end user. ● I want to modify the mold, but the mold maker is not willing to consult with me. ● I don't know if the mold I'm currently using can be improved. ...To those in charge who have such concerns: ◎ Based on our experience of producing over 10,000 molds, we will propose ways to further reduce costs. ◎ We will think together with our customers and improve the mold according to their requests. ◎ Our high-precision mold processing technology will enhance the lifespan of the molds.

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● The product has significant burrs and warping, making post-processing difficult. ● There are many dimensional deviations, making sorting challenging. ● Every time the mold is maintained, adjustments are needed, which is troublesome. ...To those in charge who have such concerns: ◎ We improve mold accuracy with processing technology of ±0.002mm. ◎ When mold accuracy increases, burrs, warping, and dimensional deviations are improved. ◎ When mold accuracy increases, reproducibility after maintenance improves, allowing for a reduction in adjustment time.

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● We can press, but we don't have a team to create molds in-house. ● The capacity of the mold maker we are currently working with is insufficient. ● They won't make molds unless it's for mass production. ...To those in charge who have such concerns: ◎ Our company specializes in selling molds. We do not engage in mass production at all. ◎ We have a trial press machine, so sample evaluation is possible. ◎ With 110 employees, our capacity is reliable.

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● The mold supplier we have been dealing with has withdrawn from the business, and we can no longer obtain molds. ● To mitigate risk, we would like to shift from purchasing from one company to two companies. ● We would like to try other mold manufacturers as well. ...To those in charge who have such concerns: ◎ For press molds, we can accommodate both "design and manufacturing by our company" and "manufacturing based on provided drawings." ◎ As a mold supplier, we provide molds that reduce the burden on our customers.

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● The current mold shop is concerning due to the absence of successors. ● I am looking for a mold shop with well-equipped facilities. ● I am searching for a mold shop with designers who can provide various consultations. To those in charge who have such concerns: ◎ We are celebrating our 73rd year since establishment and aim to become a 100-year company. ◎ We update our processing machines and measuring instruments with an annual investment of 100 million yen. ◎ Designers in our technical department will work closely with customers to solve problems.

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We have introduced a large number of machine tools. With our outstanding processing technology, we can accommodate various shapes. We deliver high-precision parts from just one drawing. 【Service Contents】 - Processing of replacement parts for molds (tolerance ±0.001mm and up) - Processing of parts for jigs and devices - High-hardness cutting of carbide and hardened steel (tools from φ0.1mm) - Mirror surface grinding (Ra0.2μm and up) - Fine wire electrical discharge machining (wire diameter from φ0.05mm) *For more details, please download our catalog or feel free to contact us.

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We design and manufacture molds with a level of dimensional tolerance beyond imagination, focusing on quality. We deliver value that exceeds expectations through our technical skills and problem-solving abilities. We can handle everything from design to manufacturing to trial runs in-house. 【Service Details】 - Basic mold size under 500mm (for sizes exceeding 500mm, please consult separately) - Molds for fine connectors - Lead frame tie bar cut molds - Various film cutting molds - Motor core molds *For more details, please download our catalog or feel free to contact us.

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The products of Nagumo Manufacturing are all custom-made. Our technical department takes the lead in conducting experiments and investigations in response to the issues raised by our customers. Based on the information obtained from this, we carry out prototypes and trial runs, allowing us to make proposals from the customer's perspective. Additionally, we aim to transform our customers' "impossible" into "possible" by utilizing the know-how accumulated from such information to solve their problems. 【Business Content】 ■ Lead frame molds (design and manufacturing) ■ Trim & forming molds (design and manufacturing) ■ Insert mold molds (design molds), various molds (design and manufacturing) ■ Ultra-hard alloy high-precision cutting processing ■ Processing of various parts and components, special press processing *For more details, please download the catalog or feel free to contact us.

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