The preparation of mold processing technology

In the mold manufacturing, each part has a complexity and specificity, with overall co-ordination between nature, which gives the preparation of mold processing technology brings different requirements, a good process documentation, can affect the production costs and product quality. Processing is the preparation of the mold to make the following recommendations:

First, the preparation of the basic principles of process and notices


    The basic principles of the preparation process. According to their own human, material base and customer-supplied data or drawings of the request, as soon as possible the preparation of a practical process file, to create high-quality products, with use. In this basic principle to build the framework, faster, better and cheaper is the core content, throughout the preparation of beginning to end.


    "Fast": it requires in the shortest possible time to compile the shortest time-consuming process documents, work, pay attention to the following four points:

    A, craft must be able to do so familiar units of machine tools equipment, technical level, it is better than each machine tool operation, the processing is very understanding so as to adapt to mold parts complexity and particularity requirements, do get a copies of drawings, able to quickly determine the best machining processes and improve speed.

    2, determine a reasonable minimum machining allowance. In the whole process, between the coarse and fine processes, leaving the necessary machining allowance to reduce the processing time for each process.

    3, due to mold parts are mostly single piece, small batch, craft card can not be like the bulk products are generally careful and detailed, but should strive for a head knowledge, without omission, the key processes will have to account for a clear process notes, written operational guidance, in order to reduce operational those who meet the time and reduce processing errors.

    4, for the needs of processing jigs, gauge, auxiliary tools should be to make a design, prepared in advance.


    "Good": It requires craft to write the most reasonable and the best craft paper to prevent handling problems during processing, it is best measure of a craft is one of the criteria. Major should note the following points:

    1, reasonable arrangement of heat treatment process. Mold is a feature of the product materials, mechanical properties, heat treatment requirements are too strict, punch and die, fixed panels and other key components, at the initial stage to arrange for annealing, to improve the processing performance, conducting after quenching, to be spent to eliminate stress and deformation.

    2, the strict distinction between rough finishing arts. In general, coarse, fine divided by the heat treatment process to decide, in the final heat treatment processing mostly finishing. Margin should be in the rough phase is complete as far as possible in order to reduce tool wear and tear and use of EDM electrode, electrode wire wear and tear.

    3, to the use of pre-technological measures. For some intermediate removal of materials, more concave die, punch boards and other fixed parts should be used in the unilateral left before finishing the amount of about 0.5 mm before processing a general-shaped cavity, and then quench aging, and then finishing methods, to eliminate the stress and deformation within the processing. For some thin-walled parts, such as discharge units, to the pre-processed into an emphasis on technical units, in order to prevent the processing of clipping distortion.

    4, appropriate to stay out of the benchmark process. Processing of the base in the production of the Central Standing Committee met with the design basis can not be coincidence problem, this time, we must pre-processing of a technology base in order to facilitate processing of each process. For the progressive die sort of high-precision products, but also the need for dimensional accuracy of conversion.

    5, to be used jargon. In the process the document should make full use of well-known expression of the professional terminology and processing methods, clearly communicated process intended to avoid the color and the "processing to the drawings," "shape, dimensional tolerances to the requirements" sort of vague language, to achieve process combination with the drawings, so that the parties understand that the what, how to dry, would also facilitate the inspection and testing personnel.


    "Province": that is to fully save manpower, material and financial resources to improve unit productivity. Major should note the following points:

    1, using mechanical processes and learning and co-ordinate science point of view, for die like a single piece, small batch products, to adopt the principle of centralized processing operations, as far as possible on a single machine tool processing, shorten the process, this can reduce the loading folders, knowledge map, the calculation of duplication of time, reduce transfer order, cross-check the time and increase production efficiency.

   2, for each fixed working hours for machining adequately assess, can not use slow fast as possible, and be able to rough solution, and never on the finishing machine, so that is also conducive to protect the machine accuracy and the use of time, cost .

    2, plate, shaft, shaped Parts processing components in the mold, the plate-type parts are more, mainly a fixed plate, the upper and lower templates, discharge plate, plate and so on, the processing of these parts has some similarities to Progressive Dies fixed plate, for example, the process can be summarized as follows: blanking → Forging → annealing (normalizing) → → coarse grinding milling machining center → → quenching → semi-fine grinding → aging (stress relieving) → grinding → wire cutting, EDM. Shaft mold parts, with convex and concave die majority of its processing flow is generally: Next material → annealing → Car → quenching (or quenched and tempered) → Research → coarse grinding top-hole grinding → Aging → → fitter. To adjust the quality of grinding, based on the need to also be blue, nitriding surface treatment and so on. Special-shaped Parts for the different requirements of the preparation process may discriminate, and strive to optimize the processing technology.

    3, group processing with the processing Parts deputy dies for a whole, some part due to the use of performance requirements, the need for groups matching process. As a craft components and spare parts to understand the relationship between the assembly and spare parts in the whole role of the Deputy mold to make reasonable arrangements to mix or distribution process is extremely important. For the progressive die, the part size mostly from design decisions, which need to be processed with very few parts are made on a number of required components and parts with the following tips:

    1. The upper and lower mold of the guide pillar, guide sleeve hole.
    2. Stamping die when the column height limit.
    3. Cut off when the opening of the upper and lower knife gap.

    Mold processing technology of the preparation has a strong plasticity, but every time he is willing to brain, through constantly sum up, continuous improvement, they can be processed into affordable products.