机械类文献翻译组合机床与控制设计.docx

1、机械类文献翻译组合机床与控制设计英语原文： Integrated Machine and Control DesignAbstract In this paper, we describe a systematic design procedure for reconfigurable machine tools and their associated control systems. The starting point for the design is a set of operations that must be performed on a given part or part

2、family. These operations are decomposed into a set of functions that the machine must perform and the functions are mapped to machine modules, each of which has an associated machine control module. Once the machine is constructed from a set of modules, the machine control modules are connected. An

3、operation sequence control module, user interface control module, and mode-switching logic complete the control design. The integration of the machine and control design and the reconfigurability of the resulting machine tool are described in detail.I. IntroductionIn todays competitive markets, manu

4、facturing systems must quickly respond to changing customer demands and diminishing product life cycles. Traditional transfer lines are designed for high volume production, operate in a fixed automation paradigm, and therefore cannot readily accommodate changes in the product design. On the other ha

5、nd, conventional CNC-based “flexible” manufacturing system offer generalized flexibility but are generally slow and expensive since they are not optimized for any particular product or a family of products.An effort at the University of Michigan aims to develop the theory and enabling technology for

6、 reconfigurable machining systems. Instead of building a machining system from scratch each time a new part is needed, an existing system can be reconfigured to produce the new part. In this paper, we describe how an integrated machine and control design strategy can result in machine tools which ca

7、n be quickly and easily configured and reconfigured.In order to provide exactly the functionality and capacity needed to process a family of parts, RMTs are designed around a given family of parts. Given a set of operations to be performed, RMTs can be configured by assembling appropriate machine mo

8、dules. Each active module in the library has a control module associated with it. As the mechanical modules are assembled, the control modules will be connected and the machine will be ready to operate. Extensive and time-consuming specialized control system design will not be required. Section II d

9、escribes how the machine is designed from a set of basic machine modules,This research was supported in part by the NSF-ERC connected in a well-defined fashion, and Section III describes how the control is similarly assembled from a library of control modules. This modular construction of the machin

10、e and control allows for many levels of reconfigurability as described in Section IV. The paper concludes with a description of future work in Section V.II. Machine DesignOngoing work on manufacturing system configuration at the University of Michigan addresses the problem of starting from a part (o

11、r part family) description and extracting the machining operations necessary to produce the part(s). The operations are grouped according to tolerance, order of execution, and desired cycle time of the system, with the intention that each operation “cluster” can be produced on a single machine tool.

12、 The operation cluster considered here is to drill a set of holes for the cam tower caps on V6 and V8 cylinder heads shown in Figure 1. The input to the reconfigurable machine tool design procedure is the cutter location data generated by a process planner for this operation cluster. data includes p

13、ositioning and drilling information.The RMT design procedure consists of three main stages: task clarification, module selection, and evaluation. After a brief literature review, these three stages will be outlined in this section.A. Related researchSince reconfigurability is a relatively new concep

14、t in machining systems, there is little, if any, published literature on the design of reconfigurable machine tools. However, modular machine tools have been on the market for several years, and some of the published articles on modular robots, modular machines and assembly do have some relevance to

15、 the design of reconfigurable machine tools. For example, Shinno and Ito proposed a methodology for generating the structural configuration of machine tools. They decomposed the machine tool structures into simple geometric forms: e.g. boxes, cylinders, etc. Yan and Chen 21, 1 extended this work to

16、the machining center structural design. 12 adapted Itos method for modular machine tool synthesis and developed a method for enumerating machine tool modules. Paradis and Khosla 15 determined the modular assembly configuration which is optimally suited to perform a specific task. On the systems front, Rogers and Bottaci 16 discussed the significance of reconfigurable manufacturing systems, and Owen et al. 13 developed a modular reconfigurable manufacturin