1. Convert the drawing file to the processing software, and determine the X, Y, and Z values. According to the characteristics of the machine tool and material, select the tool to determine the speed, feed, and amount of cutting
2. The placement direction of the workpiece is in principle the X direction is the long dimension, and the Y direction is the short dimension. .
3. There are two purposes for moving the highest point of the workpiece to the Z zero point: to prevent collision and machining depth caused by forgetting to set a safe height in the program to reflect the conservative machining depth of the tool.
4. According to the actual situation, the corresponding surface is supplemented or deleted, such as the bone position copper male as a reinforced surface. Insert line cutting position OFFSET surface 0.5mm (at least). In case the tool is processed to the line cutting surface. Sharp corner position is used as R surface , To prevent the tool from being damaged at sharp corners.
5. Leave 0.05mm margin for the wiping surface for FIT molds. Some important areas are small for the wiping surface, leaving a margin of 0.1mm. The surrounding PL surface is processed in place, and the PL surface of the back mold of the small mold is 15mm away from the gap 0.08 mm.The large mold avoids the air 0.13mm.
6. When the steel material flying knife is thickened, the Z knife amount is 0.5~0.7mm. When the copper material is thickened, the Z knife amount is 1mm~1.5mm (the internal opening is 1.0mm thick, and the reference side is 1.5mm thick). For the middle profiled copper male, select the non-profiled range when opening the thick, and leave a 1mm margin at the bottom when the median light knife is divided to prevent the copper male bottom margin from touching the copper male during the thickening.
7.Before finishing milling, you must use a smaller diameter tool to roughly clear the corner margin. Where the corner cannot be cleared, a curved surface must be used to prevent the tool from being damaged due to excessive corner margin during fine milling. The margin is uniform during finishing milling.
8. When the ug software uses 2D face milling, 0.4mm should be left on the side wall to prevent overcutting on the side that is easy to overcut.
9. The tool path trimmed by the UG software is easy to hit the tool when the tool is retracted. It is recommended not to use it or to post-processing separately.
10. The cutting method of UG software is easy to follow the peripheral processing. Many islands or corners are not processed. It is recommended to follow the workpiece for processing.
11. Fill out the construction drawings of Tonggongzou\Yougong with 2 program lists respectively.
12. When using the diameter 63R6, 40R6, 30R5 flying knife to open the rough, the margin is left on the side wall and the single side 0.6~0.8MM is left at 0.3mm, and the knife cannot be stepped on, and the 63R6 can not be used in the smaller processing range. Type frame. When using 32R0.8, 25R0.8, 20R0.8, 16R0.8 tools for semi-finishing, the larger plane is reprocessed to ensure that the bottom is left 0.15mm, so that the next tool can directly finish the bottom of the workpiece.
13. Try to use 30R5 first when roughing general-sized steel materials, and choose 63R6 or 50R5 tools for roughing larger steel materials as much as possible.
14. When using alloy knives with steel fine and right-angled surfaces, the Z-cutting amount is 1mm, and when using the knife handle, the Z-cutting amount is 0.5mm..
15.When roughing the copper male, add the positive Z direction of the mold blank material to +5mm, and add it to +3mm in the XY direction.
16. The copper open uses M16 tools for rough heights below 70mm, M20 tools for heights between 70 and 85mm, M25 tools for heights between 85 and 115mm, and flying knife handles with diameters of 25R0.8 and 32R0.8 for more than 115mm. .
17. Tonggong 2D shape toolpath, choose M12 tool for height below 50mm, M16 tool for height between 50~70mm, M20 tool for height between 70~85mm, M25 tool for height between 85~115mm, over 115mm The above selects the flying knife handles with diameters of 25R0.8 and 32R0.8 for processing.
18. When parallel finishing milling, the maximum stepover is set according to the best contour parameter table of finishing parallel type. The margin before finishing milling should be kept as small as possible, steel material is 0.1~0.2mm, copper material is 0.2~0.5mm. Do not use R knife fine gong with a large area.
19. The speed of the Z-cutting F of the spiral cutting and the external feed is 1000mm/m and the copper male is 2000mm/m. The internal rapid movement (die over) feeds the steel material 4200mm/m and the copper material 10000mm/m (must be straight G01).
20. All the copper male reinforcement surfaces of the bone position must be roughed again with an R knife. 21. All copper open rough programs are increased by 4.5mm, which reduces the operator's flying time and improves efficiency. Material. The copper male has a 0.2mm margin for the rough light. The copper male bottom has a 0.25mm margin to prevent milling to the bottom plate.
22. It is recommended to use the "parallel + equal height" machining method for finishing milling of copper male surfaces. The parallelism is 55 degrees and the height is 52 degrees, and there is a 3 degree overlap.
23. In principle, there are four corners in the middle of the copper centimeter, one corner corresponds to the mold base angle chamfer C6, and the remaining three corners are rounded R2. The larger copper C angle R angle can be larger accordingly.
24. When using a white steel knife to process the shape of a copper male, the spark level parameter should be 0.015mm more negative than the requirement.
25. To prevent deformation during the processing of the bone position copper, the roughing unilateral allowance can be appropriately enlarged (the remaining 0.4mm), and it is not processed in the light (finishing directly after the roughing is completed).
26. The vertical edge of the electrode is processed with a contour one-cut by the light knife, with a variable step. Set additional 0.03/0.15 two cutters 27. The rough machining allowance of the electrode is 0.25/0.15mm, and the surface light is 0.1mm
27. Toolpath programming and calculation of surface tolerance: open thickness 0.05mm, rough light 0.025mm, light knife steel material 0.008mm (copper male 0.005mm).
28. Principles for consideration of dismantling copper: processing feasibility, practicability, strength enough not to be deformed, convenient processing, copper cost, beautiful appearance, the less copper is removed, the better, and symmetrical products should be processed on the left and right. Pay attention to the difference (such as adding an additional bevel or R angle) for copper males with similar shapes that are shifted together.
29. When removing the copper male, the joint of the two copper males should be extended by 1mm.
30. The disassembled copper male should be inserted into the workpiece to carefully check whether there is interference. The approximately symmetrical copper male should be checked for complete symmetry, and the copper male for translation and rotation processing should be checked whether it can be translated or rotated.
