Mold is a production tool with fixed shape, fixed value, precision, efficiency, and economy. Its development level reflects the level of national commodity production. In order to accelerate the listing of goods and seize market opportunities, it is necessary to shorten the production cycle of molds. Traditional molds are typical single piece production, and assembly mainly relies on repair, resulting in poor interchangeability of working parts and longer production cycles.

The standardization of molds is conducive to the improvement of design level, quality, and efficiency, thereby transforming mold production from single piece production to batch and universal specialized production, reducing production costs, and shortening manufacturing cycles. Mold parts can be divided into structural parts and process parts. The standards for mold structural parts have been widely promoted in mold production, with little or even no adjustment during assembly. This has a great promoting effect on shortening the manufacturing cycle, reducing procurement costs, and improving mold quality. Due to the significant differences in mold process components and the complexity of assembly process research and assembly, standardization research on mold process component manufacturing can summarize and promote the experience of mold manufacturing, accelerate the commercialization process of molds, make the assembly line manufacturing of molds possible, and bring huge productivity to enterprises.

A set of double groove door panel trimming molds has more than 100 inlay blocks. In order to ensure the accuracy of mold assembly, traditional manufacturing processes separately complete the bottom milling and grinding of the inlay blocks, and then carry out precision machining of the support surface and joint surface. Then, fitters study and repair the bottom surface and joint surface, and install them on the bottom plate to mill the profile and profile. The main drawbacks of this process are: ① In terms of production organization, the inlay blocks can only be installed after the bottom plate is processed, and finally the bottom plate is milled, which cannot achieve parallel production during the manufacturing process and delays the manufacturing cycle. ② The workload of fitters for block assembly is large, and the quality of block assembly depends on the experience and skill level of fitters Occupying the CNC machining time of large CNC machines, the machine tool has waiting time, which increases manufacturing costs Due to the large number of inlay blocks, there are accumulated errors during assembly by fitters, resulting in large deviations in the joint surface, screw holes, and pin holes of individual inlay blocks, poor interchangeability, and the need to return to the original factory for repair and manufacturing during replacement, which increases maintenance costs.

(1) The difficulties in standardized manufacturing of inlay blocks: ① There are many processing procedures, including not only surface and contour processing, but also joint surface, support surface, identification plane, and hole processing. ② The processing surface is complex and has large undulations, requiring different processing strategies for different areas Irregular blanks and uneven blank margins result in long clamping and tool setting times during the single piece manufacturing process. For machine operators, frequent clamping, tool changing, and program calls increase labor intensity and greatly increase the possibility of errors The requirements for process programmers are high. Programmers not only need to have solid knowledge in modeling, cutting tools, and programming, but also need to have experience in mold design and assembly manufacturing processes.

(2) The standardized manufacturing process plan for inlay blocks ensures overall mold accuracy while improving the manufacturing accuracy of individual inlay blocks. Although it increases the manufacturing cost of inlay blocks, it can effectively shorten the process flow, reduce process waiting time, change the sequential production organization mode to parallel production mode, change the concept of mold single piece matching manufacturing, treat inlay blocks as commercialized manufacturing products for production, ensure the interchangeability of individual inlay blocks, reduce maintenance waiting time, improve post service satisfaction, and shorten the overall mold manufacturing cycle.

By comparing the new and old machining schemes in Tables 1 and 2, it can be seen that the process flow of trimming mold inserts is shortened, the number of clamping times is reduced, the degree of machining centralization is improved, cumulative errors are reduced, and the advantages of machining center automation and high precision are fully utilized, reducing manual errors. The advantages of adopting a new process plan include: ① Manufacturing process automation, using machining center units, fully utilizing the efficient automatic tool changing function of the machining center tool library, completing rough and fine machining with one clamping, avoiding benchmark conversion errors. ② Standardization of manufacturing process specifies a unified clamping and positioning method for inserts, and CNC machining is carried out according to the standard process flow Standardization of processing data, explicit expression of product manufacturing information (PMI) on inserts, and establishment of unified color standards based on insert function, accuracy, and process requirements The standardization of CNC programming templates and the formulation of standard process rules ultimately rely on CNC programs. In order to improve programming efficiency, standardize program quality, and reduce human errors, standard machining templates are used for each process to achieve the standardization of CNC programs.