Guide
pin guide sleeve mold is one of the essential parts in the production
process, the guide pin guide sleeve with the degree of coordination is
the impact of the production of the guide sleeve can be carried out
smoothly, then add copper sleeve design and processing guide column Guide sleeve, should be how to calculate the mold guide and guide sleeve with the gap between it?
1, according to the shape of the workpiece, the way the discharge and press first determine the arrangement of the guide column;
2,
according to the amount of change in the blanking gap, the distribution
of the various parts of the tolerance, the general tolerance of the
guide bushings for one-half to one-third of the amount of change, the
deflection of the guide column for the quarter to one-fifth The amount of change, guide column guide sleeve with the gap on the
blanking gap change of one-half to one-third of the amount of change;
3, Determine the size of the guide pillar according to the allowable
bending deflection of the guide post and the lateral force during
blanking (mainly when blanking does not close the workpiece);
4, according to the distribution of the gap to change the amount of
blanking clearance and the arrangement of guide pin guide to determine
the maximum guide pin guide clearance;
5, According to the guide pin guide sleeve with the maximum
clearance and guide pin guide sleeve to determine the tolerance of guide
pin guide sleeve with the minimum clearance;
6, according to the guide pin guide sleeve with the smallest gap to determine the guide post guide sleeve form tolerance.
In
order to ensure the guide pin and guide sleeve with the precise
clearance, the processing, the general gap with a larger gap between the
inner guide -0.01 to -0.015, the inner guide tolerance of 0 to -0.005. With the clearance of the smaller tolerance of the inner guide 0 to -0.002, the tolerance of the inner guide 0.003 to 0.005. The above thin material selection principle. Outer guide assembly to ball guide column assembly, must buy standard parts, the amount of interference in 0.01-0.02mm.
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