FDM Rapid Prototyping Technology of Complex-Shaped Mould Based on Big Data Management of Cloud Manufacturing

Table 2

The shrinkage percentage of each spur face gear master mould.

Core
Cylindrical base	Reflexive mould of spur face gear	Pouring cavity of keyway	Centre-locating hole of core	Centre-locating shaft
1.12%	0.22%	0.35%	0.51%	0.64%
Bottom die
Square base		Cylindrical boss
1.46%		0.19%
Top die
Square base	Cylindrical groove	Pouring cavity of keyway	Centre-locating hole of core
1.41%	0.10%	0.41%	0.57%