A set of plastic mold manufacturing should pass a lot of working procedure, and mold design is the first step, today the dongguan Plastic mold factory, editor of the belt you take a look at the plastic mold design to import column guide sleeve design and processing.
Aperture and guide pillar are suitable, generally USES the H7 / h6, in order to guarantee the guiding role, guide post. Guide bush of fit clearance less than the gap between the concave and convex mold. Outer diameter and the mold base are suitable, using H7 / r6 interference fit, the other end with the set of sliding fit.
In order to guarantee the accuracy, processing in addition to make the matching of the guide pin, guide sleeve, conform to the butcher "precision requirements, should also meet the coaxial degree of the surface between. In order to make the guide pin, guide sleeve, with the surface of the inner part of the hard and wear-resistant and good toughness, use T10A, wear-resisting surface. Resilient. Resistance to bending. Not easily broken.
Heat treatment requirements: surface quenching and low temperature tempering HRC acuity 55 HRC. Guide pin hole in the center of the heat treatment after the repair, and finally during grinding, can be used on both ends of the center hole of the clamping, and. Should be in a clamping column of two cylindrical grinding, in order to make sure the alignment between the two surfaces.
Set of grinding process, in order to achieve alignment requirements. Processed with this method, the clamping force should not be too big, so as to avoid deformation of inner hole. Or the first round grinding, located within a circle again, with spire to resist cylindrical grinding spindle. This processing method can not only guarantee the alignment, and can prevent the matching surface scratches in the heart of the movement.
All after fine grinding, therefore, must be the arc with oil stone grinding smooth, eliminate in circular arc edge belt after grinding.
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