1. Work out the process design in the shortest time.
(1) Be familiar with the technical level of machine tools and equipment to meet the requirements of complexity and particularity of die parts, quickly determine the best technological process and improve efficiency.
(2) Determine the reasonable minimum allowance. Leave the necessary margin between each working procedure to reduce the time of each working procedure.
(3) Because the mould parts are mostly single-piece and small-batch, the process card can't be as detailed as batch, but it should be clear at a glance as far as possible, whether there are any omissions, explain the matters needing attention in key processes, and write operation instructions to reduce the operator's adaptation time and reduce mistakes.
(4) Fixtures, measuring tools and auxiliary tools needed in the process should be designed and prepared in advance.
Second, write the most reasonable and best process design.
Reasonable arrangement of (1) heat treatment process. The heat treatment requirements of the mold are very strict. Key parts such as punch and fixed plate should be annealed in the initial stage to improve performance and eliminate stress and deformation after quenching.
(2) Strictly distinguish between coarse process and fine process. The division of roughing and finishing processes is determined by the heat treatment process, and most of them are refined after the final heat treatment. The allowance should be arranged in the rough machining stage as far as possible to reduce tool loss.
(3) Pretreatment measures should be adopted. For some female dies with more material removed in the middle, the parts such as the punch fixing plate are roughly formed first, and then finished to eliminate internal stress and deformation. For thin-walled parts, strengthen the process table to prevent clamping deformation.
(4) Set aside benchmarks appropriately. For high-precision workpieces such as progressive dies, dimensional accuracy conversion is also needed.
(5) Use terminology. In the process documents, we should make full use of familiar terms and expressions, clearly convey the intention, and organically combine the process with the drawings.
Third, fully save resources and improve efficiency.
(1) Using the viewpoint of mechanical technology and overall planning, adopting the principle of centralized working procedures for single parts such as molds, shortening the technological process, can reduce the repeated labor time such as clamping, drawing recognition and calculation, reduce the time for sequence change and inspection, and improve efficiency.
(2) Fully estimate the man-hour quota of each machine tool, and try not to use it slowly. Rough work can't solve the problem of precision machine tools, and it is also conducive to protecting the accuracy and service life of machine tools.
The above are the principles of metal mold design, and the key to the accuracy of mold equipment is to ensure fast, good and economical mold design principles.