Nowadays, as an efficient and automatic welding machine that accepts and executes human instructions, welding robots are widely used in industry. However, the lack of intelligence in process planning makes welding preparation complex and time-consuming. In order to realize intelligent process planning of robotic welding, one of the key factors is designing a welding task data model that can support process planning. However, current welding task models have some drawbacks, such as inaccurate geometry information, lacking information on welding requirements, and lacking consideration of machine-readability and compatibility. They cannot provide sufficient information for intelligent process planning. In this paper, a welding task data model, which includes information on accurate geometry, dimension and welding requirement, is presented to solve these problems. Firstly, through requirement analysis, necessary information items of a welding task data model are analyzed and summarized. Then the welding task data model is designed in detail by using EXPRESS. The feasibility of proposed welding task data model is demonstrated through creating the welding task file of an automobile front door subassembly. Moreover, an application framework of the welding task file is presented. Results show that proposed welding task data model is feasible for supporting intelligent process planning and information integration of robotic welding.

如今，作为一种可以接受并执行人工指令的高效，自动的焊接机，焊接机器人已广泛应用于工业中。然而，工艺规划中缺乏智能使得焊接准备工作复杂且耗时。为了实现机器人焊接的智能化工艺计划，关键因素之一就是设计一种可以支持工艺计划的焊接任务数据模型。然而，当前的焊接任务模型具有一些缺点，例如不正确的几何信息，缺乏关于焊接要求的信息以及缺乏对机器可读性和兼容性的考虑。他们无法提供足够的信息来进行智能过程规划。本文提供了一个焊接任务数据模型，其中包括有关准确的几何形状，尺寸和焊接要求的信息，介绍解决这些问题。首先，通过需求分析，分析和总结了焊接任务数据模型的必要信息。然后使用EXPRESS详细设计焊接任务数据模型。通过创建汽车前门组件的焊接任务文件，证明了提出的焊接任务数据模型的可行性。此外，提出了焊接任务文件的应用框架。结果表明，所提出的焊接任务数据模型对于支持智能焊接机器人的工艺规划和信息集成是可行的。通过创建汽车前门组件的焊接任务文件，证明了提出的焊接任务数据模型的可行性。此外，提出了焊接任务文件的应用框架。结果表明，所提出的焊接任务数据模型对于支持智能焊接机器人的工艺规划和信息集成是可行的。通过创建汽车前门组件的焊接任务文件，证明了提出的焊接任务数据模型的可行性。此外，提出了焊接任务文件的应用框架。结果表明，所提出的焊接任务数据模型对于支持智能焊接机器人的工艺规划和信息集成是可行的。