A unique prototype press-fit terminal that reduces the number of processes such as solder application and reflow processes.
Conventional connectors used solder to secure pins when mounting them onto printed circuit boards. In contrast, press-fit terminals allow for easy pin mounting by pressing them into the board. This reduces manufacturing processes such as solder application. One significant reason for the shift towards press-fit terminals is that the reduction of the "solder application" process minimizes the thermal impact on the product. Particularly, circuit boards are sensitive to heat, and certain components may malfunction or have poor connections due to heat generation. By reducing heat generation, quality can be improved. Thus, there are many advantages to using press-fit terminals, leading to a transition from "solder connections" to "press-fit" in current practices. The benefits of using press-fit terminals include reduced process steps, lower manufacturing costs, stable quality, and reduced environmental impact. Additionally, the following features characterize our press-fit terminal production: - High-precision slitting and punching for thin materials - Proven track record in mass production of press-fit terminals - Capability to accommodate prototypes of press-fit terminals.
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basic information
This is a press-fit terminal made of C7025-TM03, used in the automotive industry. The thickness is 0.64mm, and the pitch is 2.2mm, manufactured using a prototype progressive die. The most challenging part of the press-fit terminal is the punching process for the hole section. For this press-fit terminal, the punching process for the thin section with a width of 0.3mm against a thickness of 0.64mm has a dimensional tolerance of ±0.03mm for the diagonal cross-section of the press-fit part, and the slit punching for the press-fit part is below 0.5t, making it a high-difficulty thin sheet press-processed product. However, Nakato Gawa Giken Co., Ltd. has various achievements in press-fit terminals, which have seen increasing demand in recent years, so we can handle the processing of thin and thin sheet press-processed products without any issues.
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Applications/Examples of results
Our company has a manufacturing track record in many industries, including the automotive and electronics industries. Among these, the ECU in the automotive industry is a computer that controls the entire vehicle's electronic systems, and it is expected to continue to be in demand as it will still be used in hybrid vehicles, electric vehicles, and fuel cell vehicles. The feature of the press-fit terminals manufactured by Nakato Gawa Giken is the high precision during mold production. The pin at the tip of the press-fit terminal comes in various shapes such as needle eye, U-type, H-type, and M-type, but the difficulty of the slit cutting process itself is very high. Therefore, our company achieves slit cutting for thin materials while meeting small tolerances by using highly precise molds. In this way, our company responds to mass production prototypes of specially shaped press-fits and manufactures highly accurate prototype progressive press molds based on years of experience and know-how.
Company information
Nakatogawa Giken Co., Ltd. has been manufacturing progressive press molds in Ishinomaki City, Miyagi Prefecture for 35 years, and is a well-known leading prototype progressive mold manufacturer in the Tohoku region. Our company specializes in precision progressive press molds, offering high-precision molds (sales molds) with machining accuracy of ±0.001 and material thickness starting from 0.03mm. We also accommodate prototype molds with the same precision as mass production molds. We can carry out everything from mold design and manufacturing to inspection and press processing in a consistent manner. Additionally, it is a given that Nakatogawa Giken's processing technology can handle sizes as small as a grain of rice. Our ability to consistently perform such high-precision processing is the key to achieving high-precision mold component machining. Furthermore, we have a track record of producing a total of 3,000 progressive molds, and we have preserved all previous prototypes as skeleton samples. With the accumulated samples, our idea generation capabilities allow us to create various mold shapes that meet our customers' requests. At Nakatogawa Giken, we particularly excel in the design and manufacturing of prototype molds for small to medium production runs, and we also support press processing for prototypes and small to medium production. We are confident that we will not be outdone in this area of press processing.
