Application of the hottest proe in 3D modeling and

Application of pro/e in three-dimensional modeling of mouse shell and mold design

Abstract: through examples, this paper discusses the three-dimensional design of products under pro/e, injection molding process analysis, mold parting surface creation, mold volume block extraction, mold opening simulation and mold model assembly, and focuses on the specific operation steps in the mold analysis process, enriching the whole design process

key words: pro/e mold analysis mold design

I. Introduction

with the development of information technology and the increasingly fierce competition, enterprise design products are developing towards the goal of high efficiency, low cost and one-time molding. It can be seen that we should vigorously promote some high-performance product design software and its design ideas. Pro/e software is more and more widely used in product development and design because of its powerful modeling and structural design functions. It adopts Feature-Based Parametric Modeling, full-size constraints, size driven design modification and full data related technologies, which provides conditions for effectively shortening the development cycle of products

II. Analysis of structural characteristics

the mouse is an electronic device that must be configured by the computer. It requires beautiful appearance, good hand feel, good wear resistance, non-toxic and tasteless, good dimensional stability and good optical performance. From the perspective of molding, it should have good molding performance and a wide range of raw materials. Due to the large output of the mouse, the production cycle is required to be short. Considering all factors, ABS is selected as the raw material here

III. 3D modeling

a well shaped 3D model is the basis for the next step - mold design. The solid model of the workpiece is established by stretching, cutting, draft, fillet, shell extraction, array and other commands (see Figure 1)

Figure 1 three dimensional characteristics of mouse shell

IV. injection molding process analysis

1. Quality attributes of the model

2 Thickness uniformity analysis

click the menu analysis → model a analysis → select the analysis type as "thickness" in the "model analysis" dialog box → select the detection method as "plane" and select the step surface corresponding to the front surface at the bottom of the mouse shell on the part. At this time, the analysis results can be displayed in the pro/e interface

3. Draft angle analysis

select menu applications → mold/Casting (c a stin g), then the system loads the mold analysis menu into the analysis menu, and click the mold analysis menu, In the "mold analysis" dialog box, select the analysis type as [draftcheck] → select the "surface" option in the surface option bar → press the "arrow" and select the inner surface of the mouse shell as the detection surface → select "plane" in the drag direction option bar, select the top surface as the reference surface, and adjust the draft direction to point to the opening direction of the workpiece → enter the draft angle: 1. The detection results are shown in Figure 2, The parts meet the draft requirements

figure to achieve comprehensive, harmonious and sustainable development 2. Draft analysis results

v. mold design

1. Establish a new mold design document

2. Establish the mold assembly model and generate the mold volume block

3. Set the shrinkage

4. Design parting surface

pro/e mold design requires that the parting surface cannot have holes, so it must fill the holes to form a complete surface. Through a series of operations such as copying, leveling, skirt, etc., until the established parting surface can cut the workpiece volume block or mold volume block (Fig. 3)

Figure 3 main parting surface

5. Design of gating system

6. Segment and extract volume blocks

after mold volume → split → two volumes all workpcs → done, select the parting surface, separate the workpieces, and define the names of each volume block respectively

7. Pour the produced parts and conduct mold opening simulation (Fig. 4)

Figure 4 opening simulation effect figure

VI. flow simulation analysis of the mold

1. Open the formed part file

click the "open folder" icon in the toolbar, or click file → open, select the casting part established, and click the "open" button

2. Establish benchmark

click the "datum point" icon in the "datum Toolbar", or click Insert → model datum → point in the menu, open the "datum MP o i n t" dialog box, select the edge on the sprue in the model, select "center" in the [References] column of the dialog box, and click the "OK" button to complete the creation of datum point pnt0

3. Enter the plasticadvisor operation interface and analyze it

(1) select materials and set forming parameters

click the icon in the "adviser Toolbar", or click a D VISER → moldingparameters..., to open the "Para m parameters..." dialog box. Select the [select material] tab and select the item "generic ABS" in the column of [commonlyused materials]; Select the [processing conditions] tab, set the mold temperature to 80 ℃, the injection temperature to 230 ℃, and the maximum injection pressure to 120MPa. Other options accept the default settings of the system, and click the "OK" button

(2) analyze the gate position

after the material and forming parameters are determined, the forming process conditions should be analyzed first to obtain the best forming parameters

click the icon in the "a DVI s e r (consultant toolbar)" or click a DVI s e r → a DVI s e r s e l e c t i o n... In turn to open the "adviser selection..." dialog box. Select the "gate location analysis" item in [select an analysis aim], click the "start" button, and the system starts the relevant analysis and calculation. After the analysis process, the "R E S U ltsummary" dialog box appears. After viewing the results, click "close" to close this dialog box. In addition, the results of the analysis are also displayed in different colors in the model, indicating the best gate position

(3) plastic flow analysis

click the icon in the "a DVI s e r" or click a DVI s e r → a DVI s e RS e l e c t i o n... In turn to open the "adviser selection..." dialog box. Select the "plastic flow analysis" item in [s e c t an analysis aim], click the "start" button, and the system will start to automatically analyze, calculate, and fill the model. After the analysis, you can view the results in the pop-up "result summary" dialog box, and then click the "close" button to close the dialog box. According to the inspection result of "confidence of fill", if the color of the parts is all green, it indicates that the filling condition is good

(4) cooling quality analysis

click the icon in the "adviser" or click adviser → adviser selection... In turn to open the "adviser selection... Dialog box. Select the "cooling quality analysis" item in [select an analysis aim], click the "start" button, and the system will start automatic calculation and analysis. After the analysis, you can view the results in the pop-up "result summary" dialog box, and then click "close" to close the dialog box with the start of transformation and upgrading of recycled plastic processing enterprises. The analysis results are now in pro/e plastic Gu 3 One of the high-performance materials is displayed under the power analyzer interface

VII. Assembly of the whole set of molds and design of other mold parts

call the P T c standard mold base to place the cavity and core, and then use emx4.1 (mold expert system) to design other mold parts such as ejector rod, locating pin, pillar and slider device, and complete the design of ejector system and cooling system at the same time (Fig. 5)

Figure 5. Model after definition

VIII. Conclusion

the part modeling process based on pro/e is carried out in an intuitive three-dimensional environment. The product design no longer needs to carry out difficult space conception and a large number of cumbersome size calculations, and the change design of the model is simple and easy. Through this example, it can be seen that pro/e can not only show its powerful functions in 3D design, but also play a great advantage in modeling and mold analysis. This design mode integrating 3D modeling, molding process analysis, flow simulation analysis and mold base assembly greatly improves the design efficiency, reduces the probability of mold testing, makes up for the defects caused by lack of experience, and shortens the product development cycle, It plays a good role in promoting the technological progress of enterprises

references

[1] Ge Zhenghao P ro/E N GI n e erwildfire introduction and practice of plastic mold design Beijing: Chemical Industry Press 2004.

[2] Cao Yan, Cheng Wei, medium P R O/e n gin E Er wild fire die design example refinement Beijing: China Machine Press 2005.(end)