The Complex Housing Injection Mold Design of Automobile Based on UG and Numerical Simulation

2014 ◽  
Vol 852 ◽  
pp. 547-551
Author(s):  
Yi Mei ◽  
Lang Chen ◽  
Guang Yan Wang
Keyword(s):  
Numerical Simulation ◽  
Computer Aided Design ◽  
Complex Surface ◽  
Structure Design ◽  
Simulation Software ◽  
Injection Mold ◽  
Development Cycle ◽  
Injection Mold Design ◽  
Plastic Parts ◽  
Aided Design

This paper analyzes the structure and process of an automobile with the switch case plastic parts,using injection molding numerical simulation software to analyze the position of gate,warpage and shrinkage. It provides design basis for the mold structure optimization. Finally, this article uses UG Mold Wizard platform to finish the package of structure design of injection mold completely,and solve the parting problems of complex surface .Realizing the plastic parts of the CAD / CAE / CAM computer-aided design, greatly shorten the development cycle.

Research of Blades of Complex Surface Construction Based on Laser Rapid Prototyping

2014 ◽  
Vol 621 ◽  
pp. 107-110
Author(s):  
Zhi Bo Yang ◽  
Zhen Peng Qu
Keyword(s):  
Computer Aided Design ◽  
Production Efficiency ◽  
Rapid Prototype ◽  
Complex Surface ◽  
Rapid Prototype Technology ◽  
Market Competitiveness ◽  
Development Capacity ◽  
Development Cycle ◽  
Curved Blade ◽  
Aided Design

There are a lot of faults in making complex surface parts (especially 3D curved blade) as designing difficultly, processing complexly, low production efficiency and so on. In this paper, it integrates the computer aided design and manufacturing, layered manufacturing and increase material molding technology. They are based on the pro/E 3d surface modeling and rapid prototype technology. The technology can put the blades of irregular surface processing into simple graphic processing. We can make complex plane quickly, make the development cycle of new products shorter and reduce the development cost by selected material curing. Thus it can make the enterprise have higher product development capacity and market competitiveness.

scholarly journals FEA ’s Flow to the Future

2000 ◽  
Vol 122 (07) ◽  
pp. 70-72
Author(s):  
Jean Thilmany
Keyword(s):  
Computer Aided Design ◽  
Simulation Software ◽  
Medium Size ◽  
Element Analysis ◽  
Solid Models ◽  
Single User Interface ◽  
Airplane Wing ◽  
Noise Vibration ◽  
Plastic Parts ◽  
Aided Design

This article demonstrates the increasing use of finite element analysis (FEA) by engineers. FEA technology from ANSYS lets engineers simulate the airflow over and under an airplane wing. FEA is the use of a complex system of points—called nodes—that form a grid, or mesh, across a model. The engineer assigns nodes at a density throughout the material, depending on the anticipated stress levels of a certain area. Several developers have been working to couple FEA and computer-aided design (CAD) packages tightly, so they share a common database and a single user interface. DuPont used ANSYS simulation software to solve a noise-vibration-harshness problem in the Porsche Boxter exhaust manifold. Professional analysts also are skilled at interpreting results. Plastics analysis has been within financial reach for large companies, but many medium-size and small companies can’t afford to purchase the software needed to analyse CAD solid models of plastic parts. It is stressed that the codes that power FEA software should allow companies to tailor the software to their own processes.

scholarly journals All in a Day's Work

2000 ◽  
Vol 122 (08) ◽  
pp. 74-77 ◽  
Author(s):  
John DeGaspari
Keyword(s):  
Computer Aided Design ◽  
Cnc Machining ◽  
Numerical Control ◽  
Mold Design ◽  
Injection Mold ◽  
Team Members ◽  
Injection Mold Design ◽  
Computer Aided ◽  
Mold Making ◽  
Aided Design

This article illustrates that teamwork by four companies cuts the time from mold design to finished part down to hours instead of weeks. The companies formed Rapid Use of Shop Hours (RUSH) team—pooling their expertise in mold making, computer-aided design (CAD)/computer-aided manufacturing (CAM) software, machine tools, and controls. The team members were Pleasant Precision Inc., a supplier of interchangeable insert mold systems; PTC, which supplied the tool design and NC toolpath software; Makino, a manufacturer of computer numerical control (CNC) machining centers; and Dynisco, which supplied the hot runner control. The RUSH team generated an injection mold design and numerical control toolpath data, machined and assembled a production injection mold, and installed hot runner controls to regulate plastic flow internally in the tool.

Computer Aided Design of Transmission Components of Liquid Stirred Tank

2011 ◽  
Vol 109 ◽  
pp. 711-714
Author(s):  
Ying Jiang ◽  
Jie Liu
Keyword(s):  
Computer Aided Design ◽  
Automatic Generation ◽  
Structure Design ◽  
Stirred Tank ◽  
Design System ◽  
Design Requirement ◽  
Design Efficiency ◽  
The Common ◽  
Aided Design ◽  
Develop System

Secondary develop system can realize design automation of the common parts, so that software system can automatically inquire the chart and get data, then this could really release design personnel and improve the design efficiency. By secondary develop system of stirred tank users can respectively carry on the design according to their own needs. So secondary develop system has the function of automatic generation graphics, and can generate CAD drawings complying with the design requirement, so it reflected the intelligent performance of the design system. Secondary develop system is able to complete the automatic design of common parts, and can greatly improve the quality and efficiency of design, so it has very important use value. This design realizes the function of automatic graphics generation of transmission of stirred tank, and can generate structure design of common belt wheel.

Simultaneous Computer-Aided Design of Rotational Plastic Parts

1993 ◽  
Author(s):  
Colin Chong ◽  
Kiyoshi Sogabe ◽  
Kosuke Ishii
Keyword(s):  
Injection Molding ◽  
Dynamic Characteristics ◽  
Computer Aided Design ◽  
Critical Speed ◽  
Dynamic Balance ◽  
Cad System ◽  
Compatibility Analysis ◽  
Computer Aided ◽  
Plastic Parts ◽  
Aided Design

Abstract This paper addresses the problem of balancing rotational plastic parts during the early stages of design. The study develops an interactive methodology that uses a solid modeling CAD system and considers injection molding concerns simultaneously with static and dynamic balance. The Transfer Matrix Method evaluates the dynamic characteristics by predicting the approximate critical speed of the part. Design Compatibility Analysis (DCA) checks for injection molding guidelines. Using these evaluation modules interactively, designers can develop a functional and manufacturable part quickly.

Automatic Coordinate Measuring Machine Inspection

1999 ◽  
Author(s):  
V. A. Albuquerque ◽  
F. W. Liou ◽  
S. Agarwal ◽  
O. R. Mitchell
Keyword(s):  
Path Planning ◽  
Computer Aided Design ◽  
Coordinate Measuring Machine ◽  
Industrial Applications ◽  
Prototype Development ◽  
Development Cycle ◽  
Inspection Process ◽  
Measuring Machine ◽  
Aided Design ◽  
Point Placement

Abstract In many industrial applications, such as product prototype development, automation of inspection process can greatly improve product quality and product development cycle, time. This paper discusses a development of a vision aided automatic inspection using Coordinate Measuring Machine (CMM). We seek to integrate the flexibility afforded by computer vision systems with the precision of numerically controlled coordinate measuring machines to achieve a fully automatic and reliable inspection of the industrial parts. The 3-D design information and part specification from computer-aided design file is used for inspection point placement and CMM path planning. The proposed system demonstrates that optimal collision-free inspection paths can be efficiently generated for geometrically complex parts consisting of multiply intersecting features. This is made possible by using iterative subdivision of surfaces for point placement coupled with, efficient 3-D collision avoidance and path planning. The paper discusses different algorithms used, and presents experimental results.

Optimization of Preform for Stub Axle Forging Using Simulation Software

2021 ◽  
Vol 1016 ◽  
pp. 1337-1343
Author(s):  
T. Lachana Dora ◽  
Niranjan Kumar Singh ◽  
Rajkumar Ohdar
Keyword(s):  
Computer Aided Design ◽  
Simulation Software ◽  
Die Design ◽  
Design And Manufacturing ◽  
Cad Cam ◽  
Increase Productivity ◽  
Aided Design ◽  
Preform Shape ◽  
Deform 3D ◽  
Made In

There is a growing demand for more efficient and economic manufacturing process to improve product quality, reduce production cost, reduce lead time and increase productivity. The application of computer aided design and manufacturing (CAD/CAM) techniques to forging is becoming increasingly popular as the resulting improvements in yield and productivity. Modeling and simulation have become a major concern in recent and advanced research. In this paper die design for forging of an automobile component “Stub Axle” is presented. In die forging process, complex shape component cannot be made in one stage and therefore, the use of preform die becomes essential. The initial preform design was carried out by conventional method. The simulation has been carried out using software DEFORM-3D. The main goal of this study is to design an optimal preform shape resulting an optimal initial billet selection. Keywords:CAD/CAM, Preform, DEFORM-3D, Simulation, Forging

Numerical Simulation for Optimizing Tooth Profile Using Bezier Curve

2019 ◽  
Author(s):  
Kevin Qiu ◽  
Reza Samadi
Keyword(s):  
Numerical Simulation ◽  
Stress Reduction ◽  
Computer Aided Design ◽  
Bézier Curve ◽  
Bezier Curve ◽  
Bending Stress ◽  
Novel Approach ◽  
Design Variables ◽  
Numeric Simulation ◽  
Aided Design

Abstract The research hereby introduces a novel approach to reduce tooth bending stress using a parametric numeric simulation. This Finite Element Method (FEM) is used to determine optimal design variables for an asymmetric root profile of a helical gear defined by a rational cubic Bezier curve. The gear is first modelled using a machine design software and later implemented into a 3D computer aided design (CAD) package to modify the root spline geometry using a script. A nonlinear relationship exists between the design variables and tooth bending stress. Additionally, certain trends exist between the design variables to exhibit a more optimal root profile. The simulation results show that the proposed method is feasible as the general optimization process results in significant bending stress reduction. The numerical simulation demonstrates that bending stress can be reduced by as much as 10.75% by the proposed approach.

Computation of Midsurface by Feature-Based Simplification–Abstraction–Decomposition

2016 ◽  
Vol 17 (1) ◽  
Author(s):  
Yogesh H. Kulkarni ◽  
Anil Sahasrabudhe ◽  
Mukund Kale
Keyword(s):  
Computer Aided Design ◽  
Real Life ◽  
Boundary Representation ◽  
Manual Task ◽  
Computer Aided ◽  
Cad Models ◽  
Feature Based ◽  
Feature Information ◽  
Plastic Parts ◽  
Aided Design

Computer-aided design (CAD) models of thin-walled solids such as sheet metal or plastic parts are often reduced dimensionally to their corresponding midsurfaces for quicker and fairly accurate results of computer-aided engineering (CAE) analysis. Computation of the midsurface is still a time-consuming and mostly, a manual task due to lack of robust and automated techniques. Most of the existing techniques work on the final shape (typically in the form of boundary representation, B-rep). Complex B-reps make it hard to detect subshapes for which the midsurface patches are computed and joined, forcing usage of hard-coded heuristic rules, developed on a case-by-case basis. Midsurface failures manifest in the form of gaps, overlaps, nonmimicking input model, etc., which can take hours or even days to correct. The research presented here proposes to address these problems by leveraging feature-information available in the modern CAD models, and by effectively using techniques like simplification, abstraction, and decomposition. In the proposed approach, first, the irrelevant features are identified and removed from the input FbCAD model to compute its simplified gross shape. Remaining features then undergo abstraction to transform into their corresponding generic Loft-equivalents, each having a profile and a guide curve. The model is then decomposed into cellular bodies and a graph is populated, with cellular bodies at the nodes and fully overlapping-surface-interfaces at the edges. The nodes are classified into midsurface-patch generating nodes (called “solid cells” or sCells) and interaction-resolving nodes (“interface cells” or iCells). In a sCell, a midsurface patch is generated either by offset or by sweeping the midcurve of the owner-Loft-feature's profile along with its guide curve. Midsurface patches are then connected in the iCells in a generic manner, thus resulting in a well-connected midsurface with minimum failures. Output midsurface is then validated topologically for correctness. At the end of this paper, real-life parts are used to demonstrate the efficacy of the proposed approach.

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