1, touch through the bit, insert through the bit in the rear die projection bit to leave 0.02MM FIT die.
2、Processing can not have burrs, to ensure the smoothness, the requirements of tolerance must be achieved. (General overall tolerance of 0.010)
3、The pin hole should be processed according to the tolerance requirements.
4、Gates and runners are processed by machine tools (CNC, EDM) strictly according to the drawing size, and to ensure the finish, and manual processing by grinding machine and rough knife pattern are not allowed.
5、No unevenness, pits, rust and other defects affecting the appearance of the front and rear mold surface. Keep the parting surface clean and tidy, no dent in the sealing part, and ensure the precision. The surface of the front and back mold tendons and columns are free of spark patterns and knife marks, and polished as much as possible. The surface of the pinhole of the cylinder is finely stranded with a reamer, and there are no spark patterns and knife marks.
6、Is the depth of the exhaust slot less than the overflow edge value of plastic, less than or equal to 0.02mm, exhaust slot by machine tool processing, no manual grinding machine grinding traces.
7, cup head hole side unilateral negative 0.01MM --- 0.02MM, the bottom generally to do deep -0.02MM.
8, tigers matching unified after the die projection tigers unilateral negative 0.05MM, and to ensure that the plane, R angle to avoid empty.
9、Pillow bit light quasi-number, pillow bit and fractal surface out of 12.00MM outside the avoidance of hollow depth of 0.2MM or more, the plane can not avoid hollow.
10、Set block, set pin, etc. should be reliably positioned fixed, round pieces have a stop turn. No pad of copper or iron under the inlay, no welding is allowed for the inner mold workpiece and inlay.
11, the muzzle hole, sleeve hole, ejector hole are processed by wire cutting, and with the smooth. The end face of the top bar is consistent with the core.
12, waterproof rubber ring groove should be inverted around R0.3-R0.5mm small rounded corners, to avoid the rubber ring in the installation of mold crushing.
13、The parts of the mold should be numbered. The number does not allow manual processing with polishing machine, before and after the mold kernel available flat milling knife in the bottom of the reference angle position to step concave flat bit and then engraved word mark. The rest of the parts code CNC processing or etching processing. Require clear, beautiful, neat and evenly spaced handwriting.
14、 Must be processed in full accordance with the customer has confirmed the mold design, if there is any change, please inform the customer or project personnel in time.
15、 Please keep the surface of the mold embryo clean and free from any scratch marks, no random knocking.
