CNC mould steel material precision milling programming
Precision mold processing and CNC programming is a work of high technological content, to the requirement of mould cavities machining process is very strict, in order to make all the process coordination is good, efficiency is higher, the company usually have each work station wi, namely the STP, requires not only effect is good, process is standardized, avoid any possible problems, to achieve the optimization of process, the highest efficiency, best effect!Let's share the key points of mold kernel milling process.
1. Refined gong without heat treatment
A.According to customer requirements and precision to choose li chi vigorously or new tiger will processing, but also to see the size of the workpiece, height to choose the appropriate machine processing.
B. use as much light as possible in the finishing process of richie and broadsword machine. Use 17R0.8,17R3.5, 13R2.5,13R0.4.
C. Use a shaping flat or round nose knife with a light side margin of 0.06MM and a clear Angle to the minimum cutter.
D. Light allowance of ball knife for arc surface is between 0.05 and 0.08MM (the tool that cannot be ground by hand)
E. Finish the cutter road by first lighting the plane and then lighting the side (not just the side, not only the bottom).
F. Try the connection of knife and knife, and mark "connection" on the program sheet.
G. If the high part of the workpiece requires the use of the flyknife light side, several more cutter paths should be made, and note that "measuring knife" and "measuring number" should be used.After testing the number, the operator can choose the cutter path which is consistent with the program.
H. Small workpiece, high precision requirements, are all in the new tiger will processing, dao road to do more delicate.The plane should be medium-lit twice, leaving 0.05 light on the first time and 0.02 light on the second time. At last, the finish surface should be finished with a new flat knife, and the path distance should be set at 50% ~ 60%.
I. For soft material light plane, use 17r0.8 13r0.4 as far as possible. If the area is large, use 30R5.(new Iliad only biggest ￠13 knife)
2. Refined gong with heat treatment
A. Select richie or new tiger to process according to customer requirements and accuracy, but also to see the size of the workpiece, height and selection of suitable machining platform.
B. As far as possible, use 17r0.8, 17r3.5, 13r2.5, 13r0.4 to use the optical plane allowance of the cutter to 0.03MM. Use the new tiger light knife to make sure the allowance is less than 0.5MM.(cutting amount is 0.12mm)
C. new Iliad coarse unified with 8 flat ￠opener coarse, unilateral leave allowance of 0.15 MM, qing Angle to minimum cutting tools.
D. Use the medium light of flat or round nose knife, first light in the plane to 0.02MM, then equal height to 0.06MM on the side, and then light once again to 0.025MM on the side with high precision and smooth finish.
E. The light in the arc surface reaches 0.06MM, and the tool cannot be ground by hand). The high precision and finish shall be medium-light once again to 0.025MM.
F. Use D10 D8 flat knife light as far as possible. D8 has more knives.(new Iliad only biggest ￠13 knife)
G. Use round nose knife as far as possible for the slope part of precision workpiece, and use flat knife to clear the Angle at the bottom.
3. Use parallel cutter method as far as possible for the light plane. Go 0 degrees or 90 degrees according to the direction of the workpiece.The same is true for the arc surface of the cutter.
4. To take into account the actual size of cutter and the degree of knife damage, this part should be counted into the program's margin.Like precision mold insert, pillow, depend on the broken is absolutely required gong accurate;For general die surface, we need to keep 0.01~0.05.The newly purchased cutter is generally 0~0.01 smaller, and the program margin is generally negative (-0.005~-0.008).
5. The dimension of the workpiece requires real distribution and projection measurement, and more programs should be done.For example: projection 1. + / 0 2.-0.005/S 3.-0.01/S 1. + / 0 2.-0.005/S 3.-0.01/S program sheet should be noted.Each program is incremented by 0.005.
6. The uniform gong with small single side of 0.02MM (i.e., program margin of -0.02) with a round nose knife.If the tiger mouth is straight, use a flat knife light gong small side 0.005mm (that is, program margin of -0.005).
7. The slide groove, insert hole and other positions to be assembled on the mold kernel should be slightly larger (single side 0.005~0.01).We need to do a few more programs.
8. Parts of the assembly part can be poured by themselves at about C Angle of 0.5 or so. Before making the program, it is necessary to comprehensively check whether there is any interference in the whole assembly drawing file, and if the design is wrong, such as vacancies, and timely raise any problems.
9. There are two types of hanging platform on the opposite side: one is unpositioned (when the side is directly cut by 0.10 when the opening is rough, and the side is no longer polished when the light knife is polished to a flat surface). It is also necessary to see whether the insert and hanging platform are free from air.The other is positioned (0.10 left on the side when opening, requiring light knife).
10. Before programming any workpiece, it shall check whether it is consistent with 2D: check whether the content on 2D should be processed or not;Whether the quantity is correct;Whether the size, direction and reference Angle are consistent.
Usually, the processing coordinates are at the position of 2D zero.
11. When doing fine milling programs, the side that open the rough program is not done by oneself needs to see the rough program that others do, for the convenience of doing fine milling programs to guarantee the safety factor.If open rough is done by the customer and can not provide open rough code then need to be on the physical knife path.
12. When doing fine milling, carefully check the discharge position of the electrode.If the electrode is not removed by itself, it is more necessary to look at the electrode, and check whether there is a leakage electrode, and check if there is a leakage electrode filled in time.Make sure that the knife is not missed and never reworked.
13. If there are some marks such as "base" or "model number" in the kernel reference Angle, it needs to be programmed.Generally use 1r0.5 ball knife for 0.10 deep, if the font is too small, use 0.3 or so grinding flat knife.
14. All processed mold kernels need not too high degree of finish to avoid empty space and chamfering, and can leave no space in the program at the first place, and the parameters are slightly more delicate than the light;If smooth clean degree request high individual light, the allowance is in 0.3 not in light, direct light knife.