First, European and American mold standards: 1. Mold: The "LKM" formwork is used. Generally, the model "HASCO" is used. 2. Pillar flipped (front mold guide post, rear mold guide sleeve). The guide post is mounted on the front mold and the rear mold guide bushing is just opposite to the home-made mold base. 3. There must be two tube nails between the panel and the A plate for the tube position. 4. The ejector plate must have guide posts (ie, toast). Little use of needles. 5. Steel: Hardened materials: LKM2083, LKM2344, 8406/ |8407| S136| LKM2767. Normally hardened to 52～54HRC. 6. Positioning ring: The positioning ring should be 4mm higher than the panel. If there is a thermal insulation plate, the positioning ring should be 4mm higher than the thermal insulation plate. Commonly used positioning ring diameters: Ø90, Ø100, Ø110, Ø120, Ø125, Ø150, Ø160. 7. Scribbled arc: FLAT (flat) and R15.5 are commonly used. The minimum opening of the mouth-opening arc is guaranteed: Ø3.5mm. 8. The "DME" and "HASCO" standards have been adopted for the ejector pins and cylinders. 9. Outlets: commonly used diving and hot runners (common DME, MasterFlow) 10. Slider: The slider must be positioned and limited (used wave bead screw, spring positioning, cup head screw limit). 11. Briquetting: Cup screws are commonly used for cup head screws and flat head screws. 12. Inclined roof: The inclined roof is used as the guide block and wear block, and the material is made of bronze. 13. Water transfer plugs: Two types of "HASCO" 1/4" BRS and 1/8" BRS. 14. Water transport inner hole: The mold must be processed up and down. Do not process the mold around. Common specifications: Ø20x20, Ø25x20. 15. Identification: often part name, part number, company name, cavity identification, material identification, recyclable identification, date chapter. 16. Mold surface requirements: Sparkerusion, Polished, Photo etched. 17. There should be a lock module (two) between the mold A and B plates. 18. Mold packaging uses butter, transparent plastic bags, sterilized wooden boxes. 19. Mold label: mold number, part number, product name, disc, manufacturing date, mold weight 20. Casting system: fan-shaped, trapezoidal. S-shaped, all nozzles must be automatically cut off automatically drop. Gates generally use "snorkeling" or hot runners; such as the use of a rotatable gate, the shape of the runner should use "trapezoid." 21. Cooling system: 1) Use a large pipe diameter for cooling. If you can use ø10, you must use "ø10" instead of "ø8". 2). The counterbore and countersink holes at the end of the cooling pipe must be concentric and must not be drilled. 3). When the pipe joint is on the side, no counterbore is required. 4). The mould shall be marked with "IN", "OUT", and a number shall be defined. 5). Waterproof ring with HASCO standard. Second, higher requirements: 1. More than 2020 mold all the template, including the thimble plate to do die cavity. 2. The guide bushing of the mold blank guide guides the exhaust groove to prevent the guide pillar guide from being damaged. 3. There must be no sharp corners on the mold and chamfering is required. Except where specified. 4. The inner mold and mold parts must not be welded without agreement. 5. The outer periphery of the mold product must be vented in place. 6. As far as possible to avoid using the grinding machine to polish on the mold, if you must use the grinding machine processing, you must use whetstone light (especially the parting surface) 7. The surface treatment of the internal mold plastic surface must be performed in accordance with the bom form, or other formally notified technical requirements. Non-glue surface processing lines (line cutting milling machine, cnc boring machine, spark machine) also need to save light. 8. All internal mold materials, mold level requirements must be based on orders, or technical requirements formally confirmed in the design review process for procurement. Material certification must be provided. If it is a die, a heat treatment report must be provided. All relevant certifications. 9. Before and after the mold in all molds, inserts, line position, inclined top, straight top (push block), shoveling chicken, etc. need to be processed in the bottom or side of a waist round pit, the material name and hardness carved out. 10. Important wearable parts such as row, push block, shovel, and pout must be nitrided and hardened. 11. The position must be positioned. Positioning methods include slingshots, wave beads, hasco (dme) standard line clamps, etc. The specific needs of each project in accordance with the requirements. Lines need to be laminated, wear plates. Beads, wear plates must use hard wear, need to add oil tanks. 12. The diagonal guide posts must be pressed tightly and cannot be turned and loosened. The tail of the inclined guide pillar must be processed into a hemispherical or truncated cone shape, which is conducive to the normal movement of the row position. Where there are two or more diagonal columns on the same row, the length, size and inclination of the columns must be the same. 13. Inclined seats must be hard wearing. The inclined roof must be machined with an oil groove. The inclined top seat is generally hardened to 25-40 or cr12 to hrc40-45 degrees, because the inclined roof seat is subject to impact load, so it cannot be too hard or it will break, and it will chamfer at all right-angle positions. . Needed inclined guide plate (bronze). Do not weld. 14. Flow channel and infeed position need to save light #400-600. 15. The thimble, tube, thimble, inclined roof and thimble plate should be engraved with the corresponding identification code to facilitate installation. If on the product, the ejector pin position is not a horizontal plane, the ejector pin holder needs to be "d" or positioned with anti-rotation pin. 16. The ejector uses the hasco or dme standard, which mold technique is selected depending on the bom form or other formal notification. 17. The HASCO standard for waterproofing rings, processing and transporting aprons (o-ring) grooves, requires a unilateral 3 degree clearance of 0.25mm, and the general aprons must have a preload of 0.3~0.6mm. If this is not taken into account The apron is easily damaged by pressure, causing water leakage. 18. Pricking your mouth to nitriding, you need to do it. The mouth radius must meet the drawing requirements. The mouth is not nitrided, and it may have been hit before walking. 19. The conventional structure mold must be equipped with support heads, both ends need to be flat, small mold pre-press 0.1mm, large mold pre-press 0.1mm-0.13mm.. 20. The diameter of the positioning ring must conform to the drawing, and the form and position of the top bar connector must conform to the drawing. 21. The specification of the water spout must be based on the bom form or confirmed pattern. The countersunk head hole must be machined and installed in accordance with the die pattern. Drilling holes must not be drilled. Sharp corners must be chamfered. 22. Water must be marked with ini,outi,in2,out2........... 23. All the words on the mold must be neat, correct, and must not be distorted. 24. The mold needs to be installed on all sides of the edge lock (straight lock). If you cannot install a side lock, you need to install a taper lock or a taper lock. Taper locks must be mounted sideways. 25. All screws and mold accessories need to be the first choice standard, screw head can not be sawed off. The effective locking length of the screw must be sufficient, normally 1.5 or 2. 26. The hot mouth slot must be rounded to avoid scratching the wire. 27. The hot mouth id card installed in the mold panel side. 28. Mold die acceptance: the technician needs to cooperate with the mold engineer according to the "mold checklist" acceptance, the competent director can only take the package to go die. 29. Note: The water pressure must be tested before moving the mold (water pressure over 100pa). After the acceptance inspection, the water must be blown clean with wind □□□. 30. Note: The outer surface of the mold blank must be maintained during the manufacturing process to prevent rust and scratches. Before the mold is packed, the inner mold needs to be sprayed with white and/or colorless rust inhibitor. All mold surfaces must be cleaned and then buttered. The mold surface is sprayed blue! The above measures are to improve the quality and grade of export moulds, minimize the complaints on mould quality issues, and give the moulds that satisfy the customers to open up more cooperation opportunities.
Insert bearing can be conveniently mounted and dismounted and can align. Its standard tolerance is the summation of inner diameter and tolerance or the difference of outer diameter and tolerance. The summation of inner diameter and tolerance ensures the lightness when and cooperates with the shaft. In addition, every insert bearing is not alone to use which must be installed with the bearing block as a whole.
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