This is the official website of Uchida Co., Ltd., a leading manufacturer of press dies.

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How dies are made

Die Manufacturing Process

In die manufacturing, accurate data at the machining stage is crucial.
Based on years of know-how,Uchida produces prospective shape data.
Our automatic data transfer system has complately automated large-scale production processes,
while the introduction of advanced IT ensures an ideal environment for rapid and precise die production

  • Discussion


    Based on technical drawings of the press-made part the die is simulated with high precision. Simulations are performed repeatedly to ensure that no press flaws occur,such as cracks or wrinkles. Uchida works with parts manufactures from the design phase to make dies of superior quality and precision.

  • Process Planning

    02.Process Planning

    The product data are then entered into Uchida's CAD system. The results are carefully examined to decide on the most efficient method for fabricating high-precision dies while taking into consideration the characteristics of the steel material used. Based on this examination, a process chart is produced and submitted to the customer.

  • Design


    The designing of dies then starts. To produce a part with complicated curved surfaces, tow or more pressing operations are usually required. A pair of dies is needed for each pressing operation. After the die design is complated,the date for the die production are produced.

  • Processing


    During the die design stage,the necessary materials are ordered. The design data are transferred to the machining center, and the primary and secondary processing operations are automatically performed.

  • Finishing and trial pressing

    05.Finishing and trial pressing

    After machining is completed, each die undergoes final fine adjustment by highly skilled staff, followed by confirmation on a trial press to ensure maximum precision.

  • Quality Control

    06.Quality Control

    The finished dies are tested by Uchida's own press to assure compliance with the quality requirements. Should a problem arise,the engineers return to the processing and finishing stages, or even back to the design stage,and repeat the entire process to achieve the highest possible die quality.

  • Delivery


    The delivered dies are installed in the customer's production line and tested again. Since thorough testing has been conducted in-house, the dies need only fine tuning at this point. Uchida engineers also provide technical guidance.

  • Maintenance


    After the dies are delivered,Uchida continues to provide technical support until the first vehicle rolls off the line. Every time new dies are installed to produce a new model, Uchida engineers visit the site,whether it is in Japan or overseas, to offer technical support.