(1), the characteristics of CNC precision machining mold productionMold manufacturing technology concentrates on many techniques of machining, and organic and electrical processing is also inseparable from manual operation by fitters.
1 Selection of mold production methods
a) Small batch production of parts, in a single piece and in a compounded manner.
b) The parts are large in batch size and are produced in a complete set.
c) If multiple molds are required for the same part product, the continuity of the mold should be maintained and adjusted.
2 Features of mold manufacturing:
a) The processing content of the same process is large, so the production efficiency is low.
b) Require workers to have a higher technical level.
c) The size and position of certain working parts of the mold must be determined after testing.
d) After assembly, it is necessary to test, adjust and repair the mold.
e) The mold production cycle is generally longer and the cost is higher.
f) Mold production is a typical single-piece production, so the production process, management methods, and manufacturing processes all have unique regularity and particularity.
(2) Steps for mold production in CNC precision machining
1 Mold pattern design includes mold assembly drawing and parts drawing.
2 Formulating the process rules, ie, formulating the processing technology and operation method of the entire mold or parts, and filling in the process card.
3 Production of parts and components Parts are processed according to the process established on the process card.
4 Assembly.
5 Trial and adjustment Try to adjust and calibrate on the press until a qualified part is produced.
6 Inspection and packaging Inspect the appearance, mark it, and package the tested parts together with the mold.
(3), CNC precision machining mold processing technology
1 Casting processing Zinc alloy casting, low melting point desirability casting, beryllium copper casting and synthetic resin casting.
2 Cutting processing Ordinary machine tool processing, copy milling, forming grinding and engraving, cnc machine tool processing.
3 Special processing Electrical processing (electric spark, wire cutting, electrolysis) corrosion processing ultrasonic processing.
4 Roughing to remove most of the allowance.
5 Finishing The workpiece achieves high machining accuracy and surface quality.
6 Refining and polishing Polishing, guide column and guide sleeve grinding.
(4) Basic requirements for the mold manufacturing process of CNC precision machining
1 Guarantee the quality of processing.
2 Guarantee the manufacturing cycle.
3 Guarantee a lower cost.
4 Improve the process level.
5 Guarantee good working conditions.
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