bending stretch 中文意思是什麼
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Stretch - bending former is used to manufacture curved pieces with large size and high shaped precision. generally, these pieces are relatively large winding radius extrusion or sheet bending profiled bars. especially, stretch - bending former is the needed equipment to produce rims, ribs, edges and strips of airplanes
拉彎機是生產加工飛機上的框肋緣條等型材零件的必須設備，常用於製造尺寸大、外形準確度要求較高、相對彎曲半徑大的擠壓和板彎型材彎曲件。 -
Using the open and modular structure designs the software control system of stretch - bending machine based on the windows operating system
採用開放性、模塊化結構設計了基於windows的拉彎機軟體控制系統。 -
A distributing hardware control system of the stretch - bending machine is designed by combining the advanced industry control computer and plc ( programmable logic controller )
採用先進的工業控制計算機與plc相結合的方式設計了分散式拉彎機硬體控制系統。 -
With its digital degree advanced increasingly, self - fault diagnosis technique has been one of key techniques to stretch - bending former system. hydraulic system is the kernel to stretch - bending former
隨著拉彎機數字化程度的日益提高，拉彎機自身的故障診斷技術已成為其關鍵技術之一。 -
In this thesis, adaptive control is put forward on the basis of studying existing control method and system engineering is applied to the development of the control system of stretch - bending machine
本文在分析現有控制方法的基礎上提出了自適應控制技術，應用了系統工程理論進行拉彎機控制系統開發。 -
So it ' s even most important to study of the hydraulic system fault diagnosis technology. only can these improve the reliability and security of stretch - bending former as well as quality of machining parts
液壓系統作為拉彎機的核心，研究其故障診斷技術，對于保證加工零件的質量、提高拉彎機的工作可靠性和安全性更是意義重大。 -
Meanwhile, the algorithm of control is simulated and the result is analyzed. in addition, the spot test and the analysis of the result have been done on the basis of the software and hardware control system of stretch - bending machine
同時，對控制演算法進行了模擬實現和結果分析，並在拉彎機控制系統軟、硬體的基礎上，進行了現場測試和結果分析。 -
And a leveled systemic fault diagnosis model is established lastly. by laboring stretch - bending former system function demands, its condition monitoring contents and hardware testing platform are established. also, fault signals acquisition, examination and process methods are researched as well
在詳細分析了轉臺式拉彎機液壓系統的組成結構、工藝特點和故障形式及特點的基礎上，確立了液壓系統狀態監測的內容，組建了系統測試的硬體平臺。 -
This thesis investigates stretch - bending former hydraulic system fault diagnosis in detail, analyzing the former constitutes and process characteristics, researching fault patterns and features of the former. and strategies for rotary stretch - bending former hydraulic system fault diagnosis are brought forward
本文深入研究了轉臺式拉彎機液壓系統的故障診斷技術，建立了轉臺式拉彎機液壓系統故障診斷的層次模型，提出了相應的故障診斷的策略。 -
Influence of bauschinger effect on springback in sheet metal stretch bending
包辛格效應對板材拉彎回彈的影響 -
Finite element simulation for stretch bending forming of t - shaped section of aluminum alloy
型材拉彎成形的有限元模擬 -
Method for springback evaluation in stretch bending of aluminium alloy sheets for automotive use
汽車用鋁合金薄板的拉彎回彈性評價方法 -
At last, the author analyzes and studies numerical simulation of stretch bending forming with lateral compression
在論文的最後進行了有側壓拉彎成形模擬的分析與探討。 -
Stretch bending is an important plastic bend process and is widely applied to forming the workpieces of aircraft and car
拉彎是一種重要的彎曲成形工藝，廣泛應用於飛機和汽車彎曲件的成形。 -
To analyse stretch bending of narrow strip by numerical calculation, taking the loading history into account, the deformed zone was divided into many elements to determine their strain by the condition that constant volume remains in deformation
摘要在考慮加載歷史的情況下，為採用數值方法研究窄板拉彎成形，將變形區劃分成若干個單元，按塑性變形體積不變條件，確定單元應變。 -
After bending movements, stretch to maintain the natural curve of the spine. 5
在彎腰動作之後，可做些拗腰運動來保持腰部的弧度。 -
The process of rotary stretch bending without lateral compression and with lateral compression is analyzed separately, and the models of the stress distributing in the section and the springback are also presented separately to discuss the relations between pre - stretch force, lateral compression and the amount of springback. numerous experiments had been done on the equipment of ztlw - 8
本文以等邊角型材為研究對象，使用解析法分別對無側壓與側壓轉臺式拉彎成形過程進行研究，建立了成形區截面的應力分佈模型和回彈預測模型，從理論上探討了回彈半徑與預拉力、側壓力的關系。 -
The feasibility and requirement of adaptive control applied to the control system are analysized. the model of the hydraulic servo system is created, simplified and dispersed. according to the characteristics and problems that exist in the control system of stretch - bending machine at present, the self - tuning control with pole placement is firstly introduced, which establishes the theoretical foundation for the development and research of the intelligent control system of the stretch - bending machine
分析了拉彎機控制系統採用自適應控制的必要和性可行性；建立了液壓伺服控制系統的數學模型，並進行了簡化和離散化；根據目前拉彎機控制系統的特點和存在的問題，第一次把極點配置自校正控制演算法引入拉彎機控制系統中，為智能化拉彎機控制系統的研究和開發奠定了理論基礎。 -
Using numerical simulation technology, many researches investigate the plastic forming processes. but rotary stretch bending is little studied
很多學者使用有限元模擬方法對塑性成形工藝進行了分析，在這之中，對轉臺式拉彎成形工藝研究較少。 -
For the first time, the process of the rotary stretch bending with lateral compression is analyzed by analytical method, and a new explanation is put forward to explain the negative springback in the forming process
本文首次使用解析法對側壓轉臺式拉彎成形過程進行分析，並對成形過程中的負回彈現象提出了新的解釋。
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