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黑龍江工程學院本科生畢業(yè)設計
摘 要
大多數(shù)焊接工裝是為某種焊接組合件的裝配焊接工藝而專門設計的，屬于非標準裝置，往往需要根據(jù)產(chǎn)品結(jié)構(gòu)特點、生產(chǎn)條件和實際需要自行設計制造。本 次車門焊接夾具的設計亦不例外。焊接工裝設計室生產(chǎn)準備工作的重要內(nèi)容之 一，也是焊接生產(chǎn)工藝的主要設計內(nèi)容之一。
對于汽車、 摩托車和飛機等制造業(yè)，可以毫不夸張的說，沒有焊接工裝夾具就沒有產(chǎn)品。通過在工藝設計時提出所需 要的工裝類型、結(jié)構(gòu)草圖和簡要說明，在此基礎上完成詳細的結(jié)構(gòu)和零件設計及 全部圖樣。工裝設計的質(zhì)量對生產(chǎn)效率、加工成本、產(chǎn)品質(zhì)量以及生產(chǎn)安全等有直接影響為此，設計焊接工裝時必須考慮實用性、經(jīng)濟性、可靠性和藝術性等。 在夾具設計和制造過程中，普遍存在尺寸鏈為題。在把零件組裝成裝配體的過程中，也就是將零件上有關尺寸進行組合和積累。由于零件尺寸存在制造誤差，因此裝配時也就會有誤差的綜合和積累。積累后形成的總誤差將會影響機器的工 作性能和質(zhì)量。這就形成了零件的尺寸誤差和綜合誤差之間的相互影響關系。因此合理地確定零件的尺寸和形位公差顯得尤為重要。
關鍵詞：汽車；結(jié)構(gòu)設計；轎車車門；夾具設計；焊接工裝；
ABSTRACT
Most welding jig for some welding assembly is the assembly welding process and a specially designed, belongs to the non-standard equipment, often need according to product structure characteristic, production condition and actual need to design manufacturing. This time the door of welding jig design is no exception. Welding jig design production preparation work of the important content, is also a major design welding production process one of the contents. For the car, motorcycle and aircraft and other manufacturing industries, can it is no exaggeration to say, no welding jig is no products. Through the process design of equipment needed to put forward types, structure sketches and briefly explain, based on the structure and complete detailed parts design and all designs. Tooling design on production efficiency and the quality of the manufacturing cost, product quality and production safety, so direct shadow ring, welding fixtures must consider when the practicability and economy, reliability and artistic quality, etc. The fixture design and the manufacture process and the prevalent topic dimension chain. In the parts assembled into the process of assembling body parts, it is about size combination and accumulation. Because parts size manufacturing error, so there will be also assembling the comprehensive and accumulation error. After the total error accumulation form will affect the machine for the work performance and quality. This creates a part size error and the integrated error the interrelation between. Because this reasonably determine the parts dimension, form and position tolerances is particularly important.
Key words:car,structural design，car door，fixture design
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