Abstract: In order to design headwear products suitable for the headform of Chinese people and
improve the suitability and comfort when the product is used, a research on the graphic platform for
assisting the design of headwear products was carried out. Firstly, the three-dimensional digital
models of five types of standard heads were reconstructed based on the National Standards. A total of
15 three-dimensional digital head models were constructed according to headform scaling factors at
the 5th, 50th, and 95th percentile of different headforms. According to the acupoint distribution and
positioning method of traditional Chinese medicine, a three-dimensional distribution model of 7
meridians and 78 acupoints was built on the constructed headform. The WebGL development kit
Three.js was used to develop an aided design platform of headwear products, realizing such functions
of continuous deformation of the multi-percentile headforms, dynamic positioning of the head
acupoints and datum-planes cutting. The platform can provide a suitability analysis of acupoint
matching, gap of the fit area and interference. A headwear massager was tried on for adaptability
analysis, and the problems of the product structure had been effectively found. The method proposed
in this research may provide implications for the compatibility analysis of related headwear products.

Key words: Chinese standard headform, percentile, acupoint, headwear product, fit