What are the main reasons for burrs when stamping pogopin spring thimbles for precision hardware?

　　There are many ways to stamp the pogo pin pogo pin of hardware, and burrs cannot be avoided during the stamping process. So what are the reasons for the pogo pin of these hardware? Next, the editor of Jingcheng Industry will explain to you:

　　First, the blade is blunt. The blunt or gnawed cutting edge can cause burrs on the pogo pin spring thimble. The factors that affect the dullness of the cutting edge are:

　　1. The material and surface treatment of the convex and concave molds are not good, and the wear resistance is poor;

　　2. The die structure is poor, the rigidity is poor, causing gnawing injuries;

　　3. The operation is not lubricated in time, and the wear is fast;

　　4. The cutting edge was not sharpened in time.

　　Second, the gap. Too large, too small or uneven blanking gap can cause burrs on the pogo pin spring thimble. The factors that affect the gap too large, too small or uneven are as follows:

　　1. Mold manufacturing errors, die parts processing does not conform to the drawings, and the parallelism of the bottom plate is not good;

　　2. Die assembly errors, large gaps in the guide parts, and non-concentric assembly of the convex and concave molds, etc.;

　　3. The precision of the press is poor, such as the gap between the guide rails of the press is too large, the parallelism between the bottom surface of the slider and the surface of the worktable is not good, or the verticality of the slider stroke and the tabletop of the press is not good, the rigidity of the worktable is poor, and the Deflection occurs during cutting, which can cause changes in the gap;

　　4. Installation errors, such as the surface of the upper and lower bottom plates of the die is not cleaned during installation or the fastening method of the upper die of the large die is improper, and the upper and lower dies of the die are not installed concentrically (especially the die without guide pillars), which causes the working part to tilt;

　　5. The structure of the die is unreasonable, the rigidity of the die and the working part is not enough, the punching force is unbalanced, etc.;

　　6. The curvature of the steel plate is large, and the steel plate is uneven.

　　Third, the blanking state is improper:

　　If the blank (including intermediate parts) is not in good contact with the punch or die, when trimming and punching with an improper positioning relative height, the shape of the workpiece will also be caused by the height of the workpiece being lower than the positioning relative height during the punching process. Burrs are produced when the shape of the cutting edge does not conform to the shape.

　　Fourth, the craftsmanship of the parts is poor:

　　Sharp corners with complex shapes, protruding or concave, are prone to burrs due to excessive wear.

　　Fifth, the material does not meet the process regulations:

　　The material thickness is seriously out of tolerance or the wrong material (such as the wrong steel grade) is used, which causes unreasonable relative clearance and burrs on the workpiece.

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