The support library section This section consists of three subsections: the annotation symbol library used for labeling, the slide library for storing schematic diagrams, and the standard parts database. In the parametric design process of standard parts, two kinds of data storage methods can be used: data storage mode in the program and data storage mode outside the program. For the standard type with a small amount of data, the in-program data storage method can be adopted. Since AntoLISP is a table format language, the table is the most basic data format, so it is convenient and simple to store the data in the program. The off-program storage method is to store data in a data file other than the program, and the program performs file operation to read data, and then performs data processing and output graphics. This method is reliable and suitable for a large amount of data. Data files can be implemented in a variety of ways, such as ACCESS, FOXPRO, etc., or text files, ASCn code files. This part of the core program part consists of the processing procedures of the standard parts. Each program is called by the main control menu, which can drive the dialog box, accept the user input selection, retrieve the standard parts database, process the data, and call the drawing program to complete the drawing or block insertion. Can be divided into four modules: dialog driver module, data retrieval module, parameter assignment module, graphics output module. The relationship between the modules. The use of prototype drawings in the design of fixture standard parts is carried out in the parametric design process of fixture standard parts. Since different dimensions and specifications of fixture standard parts require different sizes of frames and different graphic settings, this is proposed. One problem: It is necessary to ensure that the fixture standard drawing of each size can use the same drawing command as much as possible, and draw the standard drawing of different types of fixtures as required. This problem can be solved by creating a prototype map. In general, it is time consuming to reset certain parameters, such as setting layers, colors, line types, limits, snaps, units, text heights, dimension variables, and other parameters, before using AntdCAD to generate graphics on a computer. If you set these parameters in different prototypes first, create initial graphic setting information, including borders, title blocks, tolerance tables, etc. You can save a lot of time by loading different prototypes as needed before starting the drawing. . Blocks are very effective for some difficult-to-handle labels, such as surface roughness symbols, geometric tolerances, chamfer labels, datums, and Chinese characters. It is difficult to use drawing commands in programs. The use of blocks can greatly reduce the designer's work, increase the accuracy of the drawing, reduce repetitive work, and increase the drawing speed. For example, the surface roughness symbol is used in many mechanical drawings. In order to use the surface roughness symbol in different graphic files, the block method can be used to draw the surface rough symbol to make it a block, which will be used later. Insert the block directly into the surface roughness symbol. It is of course also possible to save it as a file and insert it in the current drawing by an external call (a reference to another external graphic in one graphic). (Finish) Blank type forklift forks, We can make any size you want, the material is 42 Crmo, thicker heel, our forks' capacity range from 0.5ton to 80ton. Quality assurance for one year, we have passed the ISO9000 and CE certification, please feel free to purchase. Blank Type Forks,Blank Fork Arms,Blank Forklift Forks,Blank Type Pallet Fork Shandong Techence Forging Co.,Ltd , https://www.shandongtechence.com