In general, the mold manufacturing process is as follows:
Drawing review - material preparation - processing - mold base processing - mold core processing - electrode processing - mold part processing - Inspection - assembly - flying mold - mold test – Production
A, Mold base processing;
1. Marking No. 2. Processing of a / b board 3. Processing of panel 4. Processing of thimble fixing board 5. Processing of bottom board
B. Core processing
1. Flash 2. Rough grinding 3. Milling 4. Benching 5. CNC rough machining 6. Heat treatment 7. Fine grinding 8. CNC finish machining 9. EDM 10. Wire cutting (slow wire) 11. Die saving
C. Mold parts processing;
1. Processing of sliding block 2. Processing of pressing block 3. Processing of split cone sprue sleeve 4. Processing of insert
Mold base processing details
1. the number shall be unified, and the mold core shall be numbered, which shall be consistent with the number on the mold base and in the same direction. During assembly, alignment is not easy to make mistakes.
2. Processing of a / b board (i.e. dynamic and fixed mold frame processing),
a. The parallelism and perpendicularity of the die frame shall be 0.02mm during the processing of a / B plate,
b. Milling machine processing: screw hole, water transport hole, thimble hole, machine nozzle hole, chamfering
c: Fitter processing: tapping and trimming.
3. Panel processing: the milling machine processes the boring machine nozzle hole or the material nozzle hole.
4. Processing of thimble fixing plate: milling machine processing: thimble plate and
B board is connected with return pin, B board face up, drill the top pin hole from up to down,
The countersunk head of the thimble needs to turn the bottom of the thimble plate upward and correct it. First, rough machining with a drill bit, then finish machining with a milling cutter in place and chamfering.
5. Base plate processing: milling machine processing: marking, correction, boring, chamfering.
(Note: for some molds that need to be forced to pull the top, it is necessary to add a forced pulling mechanism, such as drilling screw holes on the thimble plate)
Core processing details
1. Rough machining of flying six sides: Machining on milling machine to ensure perpendicularity and flatness, leaving grinding allowance
1.2mm
2. Rough grinding: for large water grinding, first grind the large surface, and then use the screwdriver to clamp and grind the small surface to ensure the perpendicularity and parallelism are within 0.05mm, with allowance left, 0.6-0.8mm for both sides
3. Milling machine processing: first correct the head of the milling machine to ensure that it is within 0.02mm, correct and compress the workpiece, first process the screw hole, thimble hole, threading hole, insert needle countersunk head, machine nozzle or material nozzle hole, split taper hole chamfering, then make the water transport hole, and mill the R angle.
4. Fitter processing: tapping, typing code
5. CNC rough machining: allowance
6. External heating hrc48-52
7. Fine grinding; large water grinding to 0.04mm lower than the mold frame to ensure that the parallelism and verticality are within 0.02mm
8. CNC finishing
9. EDM
10. The accuracy of wire cutting (jogging wire) is plus or minus 0.005. Generally, one is cut and one is repaired.
11. Save the mould, ensure the smoothness and control the cavity size.
12. In general, the gate opening is 0.3-0.5mm, the vent opening is 0.06-0.1mm, the aluminum alloy gate opening is 0.5-1.2mm, the vent opening is 0.1-0.2, the plastic vent opening is 0.01-0.02, wider and thinner as far as possible.
Slider processing technology
1. First, rough machining six sides with milling machine,
2. Finish grinding six sides to the size requirements,
3. Rough machining hanging table of milling machine,
4. The hanging table shall be finely ground to the size requirements and matched with the mold base sliding position,
5. The milling machine processes the inclined surface to ensure that the inclination is the same as that of the pressing block, and leaves the residual flying die,
6. Drill and transport water and inclined guide hole. The inclined guide column hole is 1mm larger than the guide column and chamfered. The inclination of the inclined guide column hole shall be 2 degrees smaller than that of the slide slope. The hole of inclined guide pillar can also be reprocessed together with the mold base after the mold is closed after flying, depending on different situations.
