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机械类 翻译 cad

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机械类翻译带CAD图,机械类,翻译,cad

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Group process and the preparation process of CAPP in order of Abstract : introduced a group of GT (Group Technology) and CAPP (Computer Aided Process Planning) of the basic method. proposed PDM (Product Data Management) system as the Integrated Framework, there will be the traditional application software for AutoCAD and CAPP organically integrated, make CAPP software development platform tends unified direction. Keywords : Group of CAPP software; PDM technology Group TechnologyGroup of the so-called Group of GT (Group Technology) is to a wide variety of single pieces of small batch production of parts, according to its shape structure, technical requirements and processing methods are similar, turning parts into several groups, In each group parts elect a representative parts (it is real and it can also be imagined, However, within the group must include all parts of the processing elements), according to the representative of a typical parts of the development process in order and selected group and design a machine and process equipment, and they formed a special workshop or Section. When processing an object by changing parts of the same group when the other parts, Due to technical requirements, structure and processes are similar, they do not change the method of processing and processing equipment, and even controlling the cam, Rail and Public block, the replacement fixture not, or only slightly adjusted, it will be possible for production processing. For example, Have Opitz aspirin use classification code for the resolution of 12,031 parts structure, As shown in figure 1. The parts of a rotating body parts, L / D 115, the median is the first one; end of a stage and a threaded fastener, the median is the second two; No hole, the third digit is 0; Keyway processing needs. Therefore, the median is 4 3; four axial hole, and other elements without position, Therefore, the median is the fifth one. Group by way of organizing production parts, the first part on the structure, Process characteristics and the characteristics of the processing equipment, for a variety of parts, classification and coding, then established for each type of parts typical Gallery and Group Processing Library. Group developed parts of the processing methods are : 1) Act virtual components. In a parts group, Design of a group that will include all parts of the geometric features of virtual components. The virtual components have all tribal processing components required processing to the surface, and then by the virtual components for the design process, namely the process of the group parts of the group. 2) Composite Process Act. In part family structure to identify a mostcomplex and longest route of the parts as a representative, Then other ethnic parts on behalf of some parts of the process has not joined. access to a nation-wide components to meet the requirements of the composite processing technology line. CAPP principle existing technology based Total workThe process of data aggregation, calculation and copying repetitive work account for the total workload %60 50% add all kinds of basic data generation and document management, Process management of the total workload of 80%. Technology is the process for most of the time the president of data Total Repeat completing such work, the following questions : inefficient design, a long life cycle and high cost; Personalized dark colors, a wide variety and is not conducive to management; Design of uneven quality, difficult to achieve optimum design; Technology staff shortages and aging. CAPP not fundamentally solve these problems. Process Design and enable staff from the tedious repetition of the liberation of labor, thus devote more energy to advanced technology research and implementation. Currently, domestic and international development and practical use of CAPP systems can be divided into three types. 1) Derived CAPP system. derivatives CAPP system is built on the technology group on the basis of use similar components similar to the principle of documents generated. Part of a new process through document retrieval system has been Some parts similar to the screening process or documents to be edited and women. Variant of the computer system to keep a certain number of model (standard) process documents in the process has been on the basis of document modifications resulting in the formation of a new technical paper. 2) Creation CAPP system. Generative CAPP system is to increase input Parts of the information technology knowledge base based on the decision-making logic and manufacturing engineering, information technology automatically produce all documents, Users need not or will be slightly modified and put to use. Generative systems do not need variant of the model document only have decision-making logic and rules, the system must be pre-read parts of the detailed information, On this basis, in accordance with procedures stipulated in the rules of logic automatic generation of documents. 3) Integrated CAPP system. Integrated CAPP system is derived systems, generative systems and artificial intelligence together, the Composite years. Currently, Application of the worlds most CAPP system is derived systems. Derived CAPP system (suitable for rotational% Computer Aided Design Technology of the main mode) is shown in figure 2. CAPP trend of development of domestic enterprises in the preparation of standardized diversity CAPP caused the existing software development standards are not unified, thus leading to a CAPP software and CAD CAM software compatibility difficulties. Thus, CAPP software development platform reunification is the trend of future development trend. PDM technology as an emerging technology, Its appearance for the people to open a new line of thought. PDM systems as a framework for integration, there will be the traditional application software such as AutoCAD and CAPP organically integrated, then CAD, CAPP system is no longer isolated, as a total product development environment of organic components. PDM systems management products from the structural design of the design process and the need to have all the information, especially PDM product coding system for the structural design of the process design of a unified coding standard. Based on this series Codes can make a more smooth flow of information, design, craft staff to obtain timely him all the required information, thus ensuring the data the unity, integrity and sharing. Shell Parts drilling holes in the axial group fixture design AbstractIntroduced a Shell drilling for parts of the axial holes group fixture, using a set of eccentric drilling eccentric characteristics, V-adjustable slider attained a fixture on the drilling location of mobile sets, the fixture holes from the center for precision adjustment for a similar group fixture design and manufacture of reference. Key words : group fixture; eccentric bushings; from the center; Holes group folder with two characteristics : first, dedicated, 2 is adjustable. Fixture Design Group with special fixture design is the difference between adjustable agencies, the adjustment of components and adjusting the design of the group fixture design characteristics. the adjustable elements and the corresponding transfer Festival agencies will be reduced fixture positioning accuracy and stiffness. Therefore, It commonly used in the high-precision machining of workpieces or secondary position, and so on a, 2 This is the date the majority of the group adjustable fixture used to replace part of the design rather than adjust the design. It is rooted group fixture design process, the high positioning accuracy, high stiffness adjustment of the lack of independent innovation. Process system caused various errors (including adjustable agencies additional error) of the Comprehensive results can not satisfy the dimensional accuracy of parts to seeking. Gear reducer Block Drilling group fixture adjustable adopt eccentric drilling sets 3 and adjustable slider compound based innovation or 4 reasonable solution to the group fixture adjustable positioning accuracy and stiffness low. Part of the group analysisPart of the group analysis are shown in figure 1 is the planetary reduction gear tooth for composite parts on the map, the main size and shape and position tolerances demanded to see the tagging. The components of the F-holes 4-M6 is used to clamp motor, the motor is installed only mouth the size requirement and even distribution of symmetry in the square C Orange Taiwan. The G-holes 4-9 a is used to install drive, 2-M8 is covered with screw holes, G-face meet the size requirement addition, uniform distribution, compared with the F-holes, two holes coordinates difference of 45 . According to our existing enterprise equipment load, the operator based on the lower amount of labor, Fixture reduce wear, extend the service life of purpose. 60Co decided to use the fixture to complete parts of the whole-line point-of Waterloo processes Its a process after the rocker arm in the vertical drilling or drilling on. Introduction fixture structure Fixture on the fixture structure demands a good workpiece fixturing, through, Under the drilling template to achieve relative overturned gear reducer on all holes as shown in Figure 2. Using this in the workpiece fixture before processing to request : In addition to a map of the F-4-M6 and G-4-9 a. 2-M8 socket outside the rest have been good for processing. use the former to be processed in accordance with the drawings workpiece, Adjustable adjustment slider 09, 14, 24 eccentric bushings, replacing the upper and lower positioning plates, processing, first workpiece shown in Figure 2 by placing the fixture, using G face, H7 hole a A benchmark for the position, limiting the components X, Y, Z-direction movement of X and Y direction of rotation five degrees of freedom, only 12 to positioning limits the angle of the workpiece positioning along the rotation axis of freedom Thus parts of the six degrees of freedom are completely six point positioning restrictions parts of the fixture is the only set position. Thread one end system, a point of positioning mandrel 06, Nut washers 04 compress the 05 components of the workpiece clamping device, loosen or tighten nuts 05, Remove the washers fixture on 04 and 01 drilling template, which can be completed quickly to the workpiece fixture. Practice proves that the This group fixture at the small error, high dimensional accuracy, achieve a workpiece fixture completed all holes processing. Design of the main components Drill sets of eccentric design Design of the main components of the eccentric drilling package design eccentric drilling is set within Cylindrical the centerline of the coincidence is not the drill. As shown in figure 3, Drill sets outside of the center within a circle with the centerline distance between the two (shown in the figure set for drilling in the vertical direction on the location of the limit , a centerline and the centerline of the two vertical direction and distance as the greatest distance), so that When drilling sets outside the center circle a rotation axis, two axis corresponding to the radius of rotation. This realization of the Inner Circle drilling in the vertical direction on the location of mobile, Mobile maximum distance of 2. Eccentric drilling kits and adjacent drill holes in the centerline a B diameter of the arc a B changes , the length will evolve eccentric drilling is set to meet the length of the design changes.Jig adjustable slider design The institute will mainly from Jig adjustable slider, fixed sets of drilling, fastening screws, Jig slider platen, special gauge block, drilling template 90 V-shaped guide rail, its schematic see figure 2. Drill kit installation slider design for adjustable, for the group to meet parts holes from the center of the size changes. Gauge size : L2 = a B2-L3 - L1 slider adjustable V-shaped rack in position. If we do not consider the V-shaped frame manufacturing error, Slider is positioning the base of the V-shaped symmetrical surface, it Slider axis in the horizontal direction of the displacement error zero baseline. The agencies use high-precision V-shaped guide rail design is based in the direction of high precision, to raise the degree of precision. V-shaped angle excessive, will cause instability positioning slider. lower guidance, the 90 V-shaped frame 5. barrel for high precision, and to improve the accuracy of linear degree, using block volume was six minutes. Institutions process : the drilling template and the slider P, K-squeezed between the size of the precinct A gauge block, and maintain close contact, twist tightly solid screw through the adjustable platen solid tight slider. Slider adjustable V-shaped surface processing, Installation error on holes indexing precision drill sets a great impact on life expectancy. Fixture design, debug technical requirementspositioning plate and drilling template to high positioning accuracy, using their position in respect of the Quartet, tie between the use of surface space to complement (H7/ h6). Positioning plate cylindrical convex center stage with its concave relative to the centerline of positioning plate center hole coaxial higher demand. (2) V-shaped guide rail Face alphanumeric 45 symmetrical Tolerance for 4 , A Guide work face to face between 45 angle Car 5; (3) positioning error fixed to the shell center hole a A H7mm positioning as a benchmark, Parts Group a a A maximum size of 95 + 0. 0350. available for a face plate positioning and location chosen benchmark