(1) Analysis of die-casting process of zinc alloy die-cast parts
Parts designed with 3D software can be displayed three-dimensionally on the computer in any direction and on any section, which facilitates observation and analysis, establishes a complete three-dimensional concept of the part, reduces the labor load and labor intensity of engineering personnel, and conducts comprehensive analysis of the die-casting process. , the probability of error is small. In the early stage of mold design, we can start from the perspective of die-casting process and propose modifications to the structural dimensions of the parts to the product design as early as possible, and consult the product design in advance on the position of the parting surface, the size and position of the gate, the position of the slag bag, the position of the ejector, etc. recognition.

(2) Zinc alloy die-casting design
According to the die-casting process plan, determine the parting surface, the corresponding draft direction and slope, which holes need to be cast, which holes need to be processed later, the core pulling position and core pulling plan, and the key control dimensions of the part (such as big end size or small end size) size), machining allowance, etc. are determined, and the design of the die casting is completed. After approval of the product design, the casting model is used for die-casting mold design, and only the shrinkage rate needs to be considered. Convert part drawings into casting drawings and calculate core forming dimensions.

(3) Overall design of zinc alloy die-casting mold
According to the zinc alloy die-casting information, weight, wall thickness and structural characteristics, and projected area, start the die-casting mold design, initially determine the process parameters, select the machine model, the overall dimensions of the mold, the installation position, ejection, mold opening, mold closing, and inspection If there is any interference, check again whether the machine model and process parameter settings are reasonable. Query the parting surface and the projected area of the core-pulling surface, and verify the clamping force and core locking force.

3.Mold design changes
(1) The three-dimensional software for zinc alloy die-casting parts is used for processing programming and transmitted to machining centers, wire cutting machines, etc. At the same time, the 3D software generates 2D engineering drawings for production and inspection. The machining center processes the cavity, uses electric sparks to process some special cavities, and the CNC lathe processes the core, etc.
(2) Use the 3D software of the casting to transfer it to the 3D coordinate instrument to make a model for measurement.
(3) Any modification to the graphics must be a modification to the three-dimensional shape, and then a two-dimensional engineering drawing is generated from it. PRO/E is a single database. Shape dimensions can be modified in 3D entities or 2D engineering drawings, and the related 3D entities and 2D engineering drawings will automatically respond to the modifications, and related dimensions such as assembly and processing will also be automatically modified.