Process for machining cold-forging plunger latch head

Abstract

The invention discloses a process for machining a cold-forging plunger latch head, comprising the following steps of: (1) cold-extruding and producing shearing workpieces; (2) extruding and chamfering; (3) extruding to flat shape; (4) bundling and stretching internal hole; (5) stretching and chamfering inside and outside; (6) punching small holes at the bottom and extruding steps; and (7) punchingsmall holes at two sides. The process adopts the cold-forging process to extrude the raw material to deform to the needed shape and specification tolerance; the loss of the raw material is extremelysmall; compared with the material consumed in traditional machining method, the saved material is extremely considerable; especially when the usage amount of the material is large, the material cost is saved more obviously; furthermore, as the continuous cold-forging process is adopted, the yield is improved; and as the precision standard is high and the surface condition is good, the electroplating can be directly carried out after forming, thus avoiding a large amount of machining time and expense for the machining machines.

Description

Technical field: [0001] The invention relates to a processing method of a lock head, in particular to a processing technology of a cold forged lock head. Background technique: [0002] One is made of carbon steel, which requires lathes, milling machines, drilling machines, grinding, polishing and other machine processing procedures. The processing hours are extremely high, and the processing loss materials account for more than 105.8% of the product. The processing cost is more than 160% higher and the output is 99% lower. %, the size and brightness are not stable, the difference is large, and the scrap rate is above 5%. The other one uses powder-foamed zinc alloy die-casting, which requires die-casting, drilling, grinding, polishing and other processing procedures. The processing hours are high, the processing cost is 120% higher, the processing material cost is 163.6% higher, the output is 60% lower, and the scrap rate is 1%. above. The above two processing procedures ha...

AI Technical Summary

Problems solved by technology

[0002] One is made of carbon steel, which requires lathes, milling machines, drilling machines, grinding, polishing and other machine processing procedures. The processing hours are extremely high, and the processing loss materials account for more than 105.8% of the product. The processing cost is more than 160% higher and the output is 99% lower. %, the size and brightness are not stable, the difference is large, and the scrap rate is more than 5%

The other one uses powder-foamed zinc alloy die-casting, which requires die-casting, drilling, grinding, polishing and other processing procedures. The processing hours are high, the processing cost is 120% higher, the processing material cost is 163.6% higher, the output is 60% lower, and the scrap rate is 1%. above

The above two processing procedures have shortcomings such as size, concentricity, parallelism, brightness and chamfering, and high cost, which affect the quality and output of the product.

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