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In the stamping production of metal mould

In order to deal with the phenomenon of stamping, we must make a concrete analysis

Take effective countermeasures

The following are the common phenomenon of stamping in production, the causes and countermeasures are analyzed as follows,

For mold maintenance staff reference.

1. piece burrs

(1) reason: A, knife edge wear; B, gap is too large, the effect is not obvious after training, C, knife edge broken angle; D, gap unreasonable upward and downward offset or loose; E, mold dislocation up and down.

(2) measures: A, B, control training knife edge; metal mold machining precision or modify the design space; C, the knife edge; D, adjust the blanking clearance confirmation template hole wear or molding machining precision; E, replace the guide or re assembly.

2. chip crush

(1): A, B, the gap is too large; improper feeding; C, stamping oil drops too fast, oil viscosity; D, e, die withundemagnetized; punch wear debris material attached to the punch pressure; F, punch die insert length is too short, lack of material, G; the hard punching, simple shape; h, emergency measures.

(2): A, control countermeasures metal mold machining precision or modify the design space; B, sent to the appropriate location when the trim material belt and cleaning the mold in a timely manner; C, control of stamping oil droplets of oil, or replace oil for reducing viscosity; D, after training (red iron material must be demagnetized but must pay attention to e); and the punch edge; F, adjust punch edge into the die length; G, material replacement, modification design. The punch is inserted into the end face to fix out or fix the inclined plane or arc (attention direction). Reduce the attaching end and scraps of die edge convex area; h, reducing the curvature die cutting edge sharpness, reducing the amount of training pit die cutting edge, straight edge increase of die surface roughness (Bei Fu), using vacuum cleaner waste. Lower the punch speed and slow down the chip.

3. chip jam

(1): A, leaking hole is too small; B, leaking hole is too large, the scrap material roll; C, blade wear, burr is bigger; D, stamping oil drops too fast, oil viscosity; E, die straight edge surface roughness, powder sintering F, attached to the edge; soft material; G, emergency measures.

(2) the Countermeasures: A, modify B, modify the leaking hole; leakage holes; C, edge D, edge drop control; the amount of oil, replace the oil; E, surface treatment, polishing processing, pay attention to reduce the surface roughness; change the material, F, modified g, convex blanking clearance; die edge end repair of inclined or curved (note the direction), use the vacuum cleaner, blanking holes in the plate blowing.

4. bias variation of material size

(1): a. Hardware mould wear, produce the flash (the appearance of inner hole is too large, too small); B, design dimensions and clearance improper, poor machining accuracy; C, feeding a punch and die insert and deviation, uneven gap; D, guide pin wear e, pin diameter, insufficient; guide component wear; F, distance, pressing, relax send improper adjustment of feeding machine; G, die die height adjustment improper; h, discharge pressure insert material wear, without pressing (pressure) function (traction unloading caused by small punch material); I, the discharge pressure insert too deep, punching too large; the mechanical properties of J materials, stamping variation (strength elongation instability); K, punching, punching strength of materials caused by traction, size variation.

(2) measures: A, B, the knife edge; to modify the design and control of machining precision; C, adjust its position precision blanking clearance; D, replacing the guide pin; E, replace the guide column and guide cover; F, re adjust the feeding machine; G, re adjust the die height; h grinding or replacement unloading inserts, increasing pressure, adjust the pressure, reduce the pressure of material; I depth; J, material replacement, feed quality control; K, punch edge end repair angle or arc (note the direction), to improve the punching force. The present material part is positioned on the discharge insert and is provided with a guiding function.

5. card material

(1): A, distance, pressure, relax the improper adjustment of send feeding machine; B, production C, pitch variation; feeder fault; D material, arc, width tolerance, large e, die stamping burr; abnormal camber initiation; F, a material guide aperture problem the upper die, pulling material; G, bending or tearing down a stripping is not smooth; h, the guide plate stripping function is set properly, material on the conveyor belt; I, thin material, feeding in warping; J, mold set up properly, and the larger feeder vertical deviation.

(2) the Countermeasures: A, B, re re adjustment; adjustment; C, adjustment and maintenance; D, replacement materials, feed quality control; E, eliminate the strip camber; F, the guide convex and concave hole punching die; G, adjust the stripping spring force; h, modified by plate, anti material on the conveyor belt; I, feeding machine and mould is additionally arranged between the upper and lower material, adding on the material extrusion safety switch; J, re erection mould.