汽车安全带扣上的按钮必须符合高质量标准,以确保该安全相关组件正常工作。即使在日常使用中会产生频繁的机械应力,但在汽车使用寿命期间,按钮的稳定性必须保证为100%。
检验统计流程控制的样本
质量保证要求
按钮的质量保证应尽可能的全面,并应在塑料注塑模具制造后立即进行质量检验。否则,只能在安装按钮后才会发现缺陷,导致后续成本高昂,因为必须要更换整个安全相关模块。在最坏的情况下,这种缺陷可能会对安全造成损害,例如无法再使用安全带了。
![]({"small":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_524914423/sectionpar/column_control_917972058/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.s.1594123467872.jpg/success-story-ct-button-seat-belt-01.jpg","large":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_524914423/sectionpar/column_control_917972058/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.l.1594123467872.jpg/success-story-ct-button-seat-belt-01.jpg","medium":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_524914423/sectionpar/column_control_917972058/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.m.1594123467872.jpg/success-story-ct-button-seat-belt-01.jpg","full":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_524914423/sectionpar/column_control_917972058/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.f.1594123467872.jpg/success-story-ct-button-seat-belt-01.jpg"})
![CT数据(蓝色)和CAD数据(灰色)的最佳拟合。用红色标记公差值外的测量值。 CT数据(蓝色)和CAD数据(灰色)的最佳拟合。用红色标记公差值外的测量值。]({"small":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1982607619/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.s.1594123468242.jpg/success-story-ct-button-seat-belt-02.jpg","large":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1982607619/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.l.1594123468242.jpg/success-story-ct-button-seat-belt-02.jpg","medium":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1982607619/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.m.1594123468242.jpg/success-story-ct-button-seat-belt-02.jpg","full":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1982607619/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.f.1594123468242.jpg/success-story-ct-button-seat-belt-02.jpg"})
统计流程控制
定期的随机抽样保证了生产流程的质量,因为出于财务和技术的原因,不可能对每个安全带按钮进行检验。要定期采集规定的组件尺寸,并在规定时间外精确监控偏差。统计分析可以在理想的时间内停止流程,并能及早识别流程中逐渐恶化的情况。进度值的形状也能提供有关潜在缺陷原因的信息。
特征
这些特点主要决定了按钮的质量:
- 形状的尺寸稳定性,例如,CAD模型中与规定额定值的对应关系。
- 如适用,稳定性可能会受到腔体的限制。
![使用蔡司CALYPSO CT对组件上的曲线形状进行详细分析。 使用蔡司CALYPSO CT对组件上的曲线形状进行详细分析。]({"small":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_539141847/sectionpar/column_control_1351385025/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.s.1594123469003.jpg/success-story-ct-button-seat-belt-03.jpg","large":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_539141847/sectionpar/column_control_1351385025/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.l.1594123469003.jpg/success-story-ct-button-seat-belt-03.jpg","medium":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_539141847/sectionpar/column_control_1351385025/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.m.1594123469003.jpg/success-story-ct-button-seat-belt-03.jpg","full":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_539141847/sectionpar/column_control_1351385025/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.f.1594123469003.jpg/success-story-ct-button-seat-belt-03.jpg"})
![顶部:尺寸稳定性的彩色显示。底部:检验孔隙 顶部:尺寸稳定性的彩色显示。底部:检验孔隙]({"small":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_2098151496/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.s.1594123469369.jpg/success-story-ct-button-seat-belt-04.jpg","large":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_2098151496/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.l.1594123469369.jpg/success-story-ct-button-seat-belt-04.jpg","medium":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_2098151496/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.m.1594123469369.jpg/success-story-ct-button-seat-belt-04.jpg","full":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_2098151496/sectionpar/column_control/column/columnpar/visibilitycontainer/wrapperpar/image/image.pic.f.1594123469369.jpg/success-story-ct-button-seat-belt-04.jpg"})
用坐标测量机进行传统检验
使用蔡司METROTOM计算机断层扫描,可以仅在单次扫描过程中检验流程控制范围内所采集的所有尺寸。甚至可以一次将多个组件插入CT系统并对其进行检验。根据组件尺寸,也可以进行完整的拍摄。此外,可以使用生成的Voxel体素随时检验附加尺寸,以执行补充性分析。如有需要,额定值/实际值比较的彩色显示提供了整个组件的尺寸精度的概览。蔡司METROTOM的特有优势:测量结果可靠且能够追踪,符合当前的计量标准。
用蔡司METROTOM进行CT检验
使用蔡司METROTOM计算机断层扫描,可以仅在单次扫描过程中检验流程控制范围内所采集的所有尺寸。甚至可以一次将多个组件插入CT系统并对其进行检验。根据组件尺寸,也可以进行完整的拍摄。此外,可以使用生成的Voxel体素随时检验附加尺寸,以执行补充性分析。如有需要,额定值/实际值比较的彩色显示提供了整个组件的尺寸精度的概览。蔡司METROTOM的特有优势:测量结果可靠且能够追踪,符合当前的计量标准。
![蔡司METROTOM 800 130kV/225kV 蔡司METROTOM 800 130kV/225kV]({"small":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1747895657/sectionpar/column_control/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.s.1594123470048.jpg/zeiss-metrotom-industrial-x-ray-system.jpg","large":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1747895657/sectionpar/column_control/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.l.1594123470048.jpg/zeiss-metrotom-industrial-x-ray-system.jpg","medium":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1747895657/sectionpar/column_control/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.m.1594123470048.jpg/zeiss-metrotom-industrial-x-ray-system.jpg","full":"/gongyeceliang/_successstories/sampling-for-statistical-process-control/j/m/section_1747895657/sectionpar/column_control/column0/columnpar/visibilitycontainer/wrapperpar/image/image.pic.f.1594123470048.jpg/zeiss-metrotom-industrial-x-ray-system.jpg"})