Development of new methods for determination of trimming die wear

开发测定切边模具磨损的新方法

• 批准号: 485985-2015
• 负责人: Alpas, Ahmet
• 金额: $ 1.82万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=585324
• 关键词: Development; new; methods; determination; trimming

This project addresses a current problem that impedes productivity and product quality at Ford plants where trimming operations are performed on automotive body panels made of advanced high strength steel (AHSS). Parts made of AHSS steels provide high strength-to-mass ratio and thus are important for automotive light weighting strategy but in order to increase their use the significant wear damage they cause to the trim dies should be reduced. The trim die wear has undesirable consequences including deterioration of trimmed parts' edges and an increased cost of operation as the worn dies need to be replaced frequently. In order to alleviate the die wear problem the first step should be to develop a measurement method that will determine the die life accurately and in a consistent way. The proposed work consists of development of a methodology for wear measurements on upper and lower trim dies as a function of the number of trimming cycles-- and by considering the die-workpiece clearance as well as the die angle. Wear measurement methods that have not been previously applied to trimming die measurement will be assessed at University of Windsor's Tribology of Materials Research Centre. These will consist of three dimensional non- contact interferometry methods supported by specialized digital optical microscopes with large depth of field focus. Both uncoated and coated DP980 type AHSS will be trimmed at Ford's facilities and the worn dies will be evaluated for the amount of damage as well as the type of surface damage that may consist of galling, material transfer abrasion, plasticity or micro-chipping controlled damage features. The research will correlate wear measurements to the particular type of wear that may occur at the cutting edge and the results will be transferred to Ford. The results are expected to contribute to the development of a Ford Standard for determining die wear. The project will help to increase the efficiency of trimming operation schedules and implementation of new tool wear reduction strategies.

该项目解决了当前阻碍福特工厂生产率和产品质量的问题 整修操作是在由先进的高强度钢(AHSS)制成的汽车车身面板上进行的。 由AHSS钢制成的部件具有高强度质量比，因此对汽车灯具非常重要 称重策略，但为了增加它们的使用，它们会对修边模具造成显著的磨损损害 应该减少。修边模具磨损具有不良后果，包括修边零件的劣化。 由于磨损的模具需要频繁更换，因此增加了操作成本。为了缓解 模具磨损问题第一步应该是开发一种确定模具寿命的测量方法。 准确且一致的方式。 拟议的工作包括开发一种测量上下配平磨损的方法。 模具作为修边循环次数的函数--并考虑模具与工件的间隙以及 下模角度。以前没有应用于切边模具测量的磨损测量方法 将在温莎大学材料摩擦学研究中心进行评估。这些将包括三个 专用数字光学显微镜支持的尺寸非接触干涉测量方法 大景深焦距。无涂层和有涂层的DP980型AHSS都将在福特的设施和 将评估磨损模具的损伤量以及可能发生的表面损伤的类型 具有刮擦、材料转移磨损、塑性或微切屑等受控损伤特征。这个 研究将把磨损测量与可能发生在刀具刃口和 结果将移交给福特。预计这一结果将有助于福特汽车的开发 确定模具磨损的标准。该项目将有助于提高修剪作业的效率 制定和实施新的刀具减磨策略。