Abstract: A deformation measurement system is developed to study the deformation of the parts in the direct metal rapid prototyping.An inductance frequency-modulation displacement sensor is used to measure the deformation with on-line or off-line mode.The communication between the worktable controlling process and the deformation measurement process is fulfilled by message transmission mechanism.Measurement data can be output with different format according to different analysis requirements.

Key words: rapid prototyping, deformation measurement, message transmission

摘要： 为了对直接金属快速成形中零件的变形规律进行研究，研制了一个变形测量系统。采用了电感调频式位移传感器，可对零件的变形进行在线或离线测量。通过消息传递机制实现了工作台运动进程与变形数据采集进程之间的通信。采集的数据根据不同分析需求进行输出，可以方便地对零件的变形进行分析研究。

关键词: 快速成形, 变形测量, 消息传递