Software Usage There are two main methods of using this software, namely navigation and self-selection. The navigation method is designed by the system to guide the user according to the established steps of the software. This method is applicable to the new scheme and the CAI courseware as a multi-axis box of the combined machine tool. The self-selection method is to select the design steps by the user himself. This method is suitable for program modification or single item design. The reference steps are as follows: (1) In the AutoCAD graphic editing state, type the command box, a prompt window appears, and enter the height and width of the multi-axis box. (2) Enter the command INPUT, enter the total number of spindles and the coordinates of each spindle, and select the shaft diameter of each axis to get the original basis. Enter the cutting parameters to check the spindle strength and prompt the user to modify. (3) Design the transmission scheme (4) Type ECHE, perform interference check on the selected scheme, and prompt the user to modify. (5) After confirming that the transmission scheme is correct, type DRAWTU and the headstock coordinate check chart is displayed on the screen. Type SAVETU to save the plan. The user can also return to step (3) to continue designing the new solution and save it. (6) Type SELECTTU to compare all the schemes and choose the one that is satisfactory. Standard parts such as sleeves, key sleeves and bearings are used. (7) Type OUTTU, output the headstock coordinate check chart, spindle coordinate table and spindle and drive shaft assembly table. When the transmission scheme design module calls this module, the multi-axis box spindle distribution map (including the drive shaft) appears on the screen. Select a spindle with the mouse, that is, a prompt message appears, suggesting the total gear ratio of the spindle, the gear module, the number of transmission stages and the drive ratio allocation recommendations. The user can select the gear modulus, the number of transmission stages and the distribution ratio. Use the mouse to arrange the position of the intermediate shaft and select the form to be directly driven with the intermediate shaft. We have one or one, one belt two, different row one belt two, the same row one belt three, two rows one belt three and three rows one belt three forms for users to choose. The system automatically displays the outer circle of all axes and the associated gear pitch circle that are directly driven by the intermediate shaft. The figure can be partially enlarged to observe the interference. If there is any possibility of interference, the interference check module can be called. After the layout is passed, the user can save the layout and then perform a new layout design to achieve comparison and selection of multiple scenarios. The LISP program in the same row and three is given below (to save space, the program is simplified to highlight the main functions). Parameters required to be input: coordinate maipt0 of the master axis; first passive axis coordinate maipt1; second passive axis coordinate maipt2; third passive axis coordinate maipt3; modulus mm and gear ratio I1, I2, I3. (defunc:3t(/MAIPT1)(setqmaipt0(getpoint Please enter the coordinates of the master axis:)maipt1 (getpoint Please enter the coordinates of the first spindle:)maipt2 (getpoint Please enter the coordinates of the second spindle:)maipt3 (getpoint please Enter the coordinates of the third spindle:) DIST1 (DISTANCEMAIPT0MAIPT1); find the center distance DIST2 (DISTANCEMAIPT0MAIPT2) DIST3 (DISTANCEMAIPT0MAIPT3) n1; set the loop condition) (while (= n1) (setqMM (getreal input modulus:) I1 ( Getreal Please enter the gear ratio 01:) I2 (getreal please input gear ratio 02:) I3 (getreal please input gear ratio 03:) R1 (/ (I1DIS1) (1I1)); find the circle radius R3 (/ (I2DIS2) (1I2)) R5(/(I3DIS3)(1I3))R2(-DIS1R1)R4(-DIS2R3)R6(-DIS3R5)Z1(fix(0.5(2R1MM))); Find the number of teeth Z2 (fix(0.5(2R2MM)) )) Z3(fix(0.5(2R3MM)))Z4(fix(0.5(2R4MM)))Z5(fix(0.5(2R5MM)))Z6(fix(0.5(2R6MM)))))(if(and(<= Z114); determine if root cutting (<=Z214) is possible (<=Z3) 14) (<= Z414) (<= Z514) (<= Z614)) (progn (alert gear has root cutting phenomenon, please re-enter the modulus and gear ratio) (setqnl); set when the loop condition) (setqn0); Do not cut, jump out of the loop) (COMMANDCIRCLEMAIPT0R1; draw each gear index circle CIRCLEMAIPT0R3; CIRCLEMAIPT0R5; CIRCLEMAIPT1R2; CIRCLEMAIPT2R4; CIRCLEMAIPT3R6;) (the number of teeth of the first set of transmission gears are:); display the number of gears (princZ1) (princ And) (princZ2) (the number of teeth of the second group of transmission gears is:) (princZ3) (princ and) (princZ4) (the number of teeth of the third group of transmission gears is:) (princZ5) (princ and) (princZ6 )(princ)) Conclusion The secondary development of AutoCAD has important practical significance in engineering design. The AutoLISP language makes AutoCAD, which is only an interactive graphical editing software, a CAD software that can truly perform computer-aided design and drawing. (Finish)
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Discussion on the preset construction of assembling CNC type cabinet