When designing plastic parts, your team should consist of diverse players, including conceptual designers, stylists, design engineers, materials suppliers, mold makers, manufacturing personnel, processors, finishers, and decorators. The detailed, yet simplified discussion of material selection, manufacturing. Tres isbn 34464032 inhaltsverzeichnis weitere informationen oder bestellungen unter. This publication is made up of a series of articles published in plastics and rubber weekly as a piece work. The designers and engineers at api have over 250 combined years of experience in designing parts for plastic injection molding, selecting materials, and processing resins specializing in engineering and high performance resins. For over 22 years, designing plastic parts for assembly has been the definitive guide for both seasoned part designers and novices to the field, facilitating costeffective design decisions and ensuring that the plastic parts and products will stand up under use. Mating metal and plastic parts do not design taper fits between metal and plastics parts, because stress cracking will occur from overtightening. Injection molding is a manufacturing technology for the massproduction of identical plastic parts with good tolerances. In the assembly design process of aircraft products, plenty used standard parts make it boring and difficult to extract assembly. Learning to use the tool efficiently is an incredibly useful skill that is an essential item for the modern.
Ihaveno reservations about enthusiastically recommending this book toanyoneinvolved in the fieldofplasticparts design. This guide was designed to demonstrate the basic elements of proper plastic part design. The detailed, yet simplified discussion of material selection, manufacturing techniques, and. During both the injection and cooling stages of the. Therefore, knowledge about the influences that cause a failure is a prerequisite to develop a robust design and to prevent failures shah, 2007. For over 22 years, designing plastic parts for assembly has been the definitive guide for both seasoned part designers and novices to the field, facilitating costeffective design decisions and ensuring that the plastic parts nd products will stand up under use. Are molded as an integral component of the plastic part. In addition to functional and structural issues, processing issues play a large role in the design of an.
All variables, such as materials, design, and conditions under which the finished product will be. Moulded plastics do not lend themselves to solid forms. Report designing plastic parts for assembly please fill this form, we will try to respond as soon as possible. Boss design is critical to joint integrity and will be discussed in the following paragraphs. A boss is a sleevelike projection, molded into the plastic base material. Bonds created using this method are permanent and involve the parts being joined by using a strong solvent to soften the joint interface before the parts are pressed together. Are typically designed for ease of assembly and are often easily automated. Designing plastic parts for assembly hanser elibrary. May 30, 2012 molded plastic parts may be designed with a variety of surface finishes, from a high gloss to a rough texture. Plastic parts have had a bad reputation over the decades due to their characteristics that vary according to ambient conditions tres, 2000. This will ultimately reduce material and manufacturing costs. Designing plastics parts for assembly, 7th edition, an excellent tool for both seasoned part designers and novices to the field, facilitating cost effective design decisions and ensuring that the plastic parts and products will stand up under use.
This book provides an excellent tool for both seasoned part designers and novices to the field, facilitating cost effective design decisions and ensuring that the plastic parts and products will stand up under use. Designing plastic components plastics technologies and services qmr plastics offers a wide range of technical services and production capabilities for producing close tolerance components. Design the work station area to minimize the distance to access and move a part. Tres and a great selection of similar new, used and collectible books available now at great prices. Avoid heavy parts that will increase worker fatigue, increase risk of worker injury, and slow the assembly process. Semantic scholar extracted view of designing plastic parts for assembly by paul a.
Since reading the book years ago and usingpaultres as aconsultant, designing plastic parts for assembly has becomemusthaveliteraturefor anyonejoining the interiors design department at mercedesbenz u. Solvent and adhesive bonding is arguably the least restrictive joining method for plastic parts in terms of design and part geometry. How to design better plastic parts solidworks forums. Jun 10, 2018 download designing plastic parts for assembly. The detailed yet simplified discussion of material selection, manufacturing techniques, and assembly procedures. Nov 21, 2016 engineering guidelines to designing plastic parts for injection molding. Height may be limited if using a silicone as the overmold material, and deeper parts are limited to a smaller outline. Part design guidelines for injection molded thermoplastics. Ihavealso recommended his services toother organizations insideand outside the autoindustry. With so many ways to formulate plastic to get just the right combination of color, texture, strength and durability, its easy to forget how the parts will be assembled. Pdf automated assembly modelling for plastic injection. Avoid parts that are sticky or slippery thin oily plates, oily parts, adhesive backed parts, small plastic parts with smooth surfaces, etc. Dfa is the method of design of the product for ease of assembly. Designing plastic parts for assembly 8e ebook hanser.
Designing plastic parts for assembly sciencedirect. Designing plastics parts for assembly hanser publications. The detailed yet simplified discussion of material selection, manufacturing techniques, and assembly procedures enables the. Our design engineers can provide you with more information and assistance in designing your inserts. How to design plastic parts for assembly knowledge centre. Sharp corners act as stress risers or concentrators, reducing part strength and causing premature failures. There are many different methods for welding two parts together. Designing plastic parts for assembly books pics download. Plastic part design for assembly provides an excellent tool for both seasoned part designers and novices to the field, facilitating cost effective design decisions and ensuring that the plastic parts and products will stand up under use. Accordingly, the design of a snapfit joint is highly dependent on the polymeric materials.
Designing plastic parts for assembly provides an excellent tool for both seasoned part designers and novices to the field, facilitating cost effective design decisions and ensuring that the plastic parts and products will stand up under use. Mar 07, 20 its a great goto reference for people designing plastic components and assemblies. The choice of surface finish is usually based on cosmetic considerations. Engineering guidelines to designing plastic parts for injection molding. Some applications require the plastic part to weather at the same. The result is a digital prototype of your product, one you can explore in detail. Screws for static joints plastic flex thread thread. How to design plastic parts for assembly knowledge. Designing plastic parts for assembly the english editions of the textbook are distributed worldwide by carl hanser verlag munich, germany and hanser publications cincinnati, ohio, usa. Plastic parts design is a very complex process and it requires the involvement of many factors like functional requirements, process constraints, material selection and assembly or structural issues. Solidworks is an extremely powerful computer aided design cad software that utilizes mathematical equations parametric variables to build parts from scratch. A successful design process requires a coherent teamwork between a designer and other specialists such as a tool designer and a manufacturing operator. Since reading the book years ago and usingpaultres as aconsultant, designing plastic parts for assembly has becomemusthaveliteraturefor anyonejoining the interiors.
Check that tolerance buildup does not cause overstress during and after assembly and that the fit is still adequate after assembly. Rivets to join plastic parts for a permanent assembly the design prevents overtightening of the joint or washers are used to prevent the head from cutting into the plastic. Plastics05555 2014 designing plastics parts for assembly. Pdf designing plastic parts for assembly semantic scholar. Injection molding is a process in which solid thermoplastic resin pellets are melted, injected into a mold, and then cooled back to a solid state in a new form. At the very least, you try to minimise the parts needed, which can save costs. Engineering guidelines to designing plastic parts for.
Tres designing plastic parts for assembly book isbn. Designing plastic parts for assembly hanser publications. Pdf designing plastic parts for assembly free download pdf. Without digital prototyping, youd need to use more budgetvaporizing physical prototypes, watch time slip away, and get to. Do not design taper fits between metal and plastics parts, because stress cracking will. Designing plastic parts and components involve implementing wide knowledge from different engineering areas. Plastic component design considerations design considerations radii in the design of injection molded parts, sharp corners should be avoided. Designing plastic parts for assembly hanser fachbuch. Jones, short cantilever beam deflection analysis applied to thermoplastic snapfit design, 1987 spe. Designing plastic parts and components involve implementing wide knowledge. The materials used in injection molding are thermoplastic polymers that can.
Tres book isbn 9781569905555 hanser hanser publishers, munich hanser publications, cincinnati sample pages. Sharp corners may also effect plastic flow, producing parts with. Designing plastic parts for assembly assembly magazine. Designing plastic parts for assembly 9781569905555 by paul a. Solidworks tips for those in design and engineering. This is the third installment of a series on assembly design that is taking a look at some features that will ensure easy assembly and accurate positioning and orientation of parts. A glossy finish can enhance the appearance of a part while a textured surface may help to mask sink marks or parting lines. Almost every plastic item around you was manufactured using injection molding. Unlimited printing and pdf download designing plastic parts for assembly 6e free pdf ebook download. Feb 26, 20 three main categories of methods are used in assembly of plastic components.
Tres isbn 34464032 weitere informationen oder bestellungen unter. Injection molding is widely used today for both consumer products and engineering applications. The kind assistance of the author and prw is acknowledged in the publication of the work. Optimization of the partsystem assembly dfa is a tool used to assist the design teams in the design of products that will transition to productions at a minimum cost, focusing on the number of parts, handling and ease of assembly. Solidworks 2015 sp5 will slow down to a crawl when you do drawings with an assembly with lots of plastic. The key is to understand the elements that are touched by designing plastic parts and communicate within these crossfunctional areas to ensure the part and the design as a whole is a success. Designing plastic parts for assembly, 3rd edition process. Design guides for plastics clive maier, econology ltd tangram technology. After a crash course in materials and plastics, it covers all of the fundamental methods for securingfastening snap fits, living hinges, etc. When designing a product, you naturally want to avoid too many parts that need assembling. If youre anywhere in the design and engineering space, chances are youll need to be fluent in solidworks. Secondary operations most parts are shipped as molded. Bookmark file pdf designing plastic parts for assembly designing plastic parts for assembly, 3rd edition. A screw driven into a boss of the plastic base secures the two components.
However, if the parts will be assembled with screws, overlooking such parameters as thread style, driver speed and boss design could spell disaster on the assembly line. Do not use since countersunk screw heads they are easily overtightened and cause stresscracking. Designing for assembly and disassembly 1 thousands of parts are joined together in each automobile, such as the plastic metal hybrid grill opening reinforcement in this ford focus. Mechanical means include, but are not limited to, such options as snap fit, screws, rivets, and press fit. It is particularly important to bear the following factors in mind when designing snap joints. Processing conditions for plastic injection molding. Designing plastic parts is a complex task involving many factors that address a list of requirements of the application. General input on the best molding method for the design concept should be sought early in the design process so the part shape can be optimized accordingly. A knurled, ribbed or abraded surface on the metal part helps to ensure a strong, permanent bond between metal and plastic. Whether you are just entering the field, or are a seasoned plastic parts designer, designing plastic parts for assembly is an excellent tool that will facilitate costeffec tive design decisions, and help to ensure that the plastic parts and products you design stand up under use.
The detailed yet simplified discussion of material selection, manufacturing techniques, and assembly procedures enables the reader to evaluate plastic materials and design plastic parts with confidence. Straight pull design parts that qualify for rapid injection molding must be designed as straightpull parts. The chinese edition of the textbook is published and distributed by chemical industry press of beijing, china. Designing your plastic part when designing parts for injection molding, the manufacturing process is an important consideration. Description download designing plastic parts for assembly comments. In injection molding, polymer granules are first melted and then injected under pressure into a mold, where the liquid plastic cools and solidifies. Designing rubber components minnesota rubber and plastics. First, you need to consider several factors to produce a costeffective product that performs at the level it needs to.
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