扭矩保证程序培训

What is TPPS?什么是TPPS
• Torque Process Potential Study (TPPS) is a process for examining threaded fastener operations. It aligns an operation to the dynamic mean specification, and to establish residual torque limits for monitoring that operation.扭矩过程潜在研究是检查紧固件紧过程,确 保生产过程达到动态扭力中间值,并建立过程监控的残余扭矩限值.
– TPPS is required for all Mandatory and Significant Operations (Delta Safety CCs and SCs). Full study which records Dynamic and residual torque, dynamic Pp and Ppk data is used to report capability of a process and residual is used to determine audit limits during surveillance. 对所有法规强制要求的和重要的扭力(三角符号涉及安全的 CC项和SC项)应实施复杂的TPPS .复杂的TPPS应记录动态和残余扭矩, 动态扭力的pp和PPk数据用来报告一个过程的能力,残余扭力用来确定日 常扭力监督过程中检查控制限. – Torque Prove-out is a short study which records 20 consecutive values and is used to center the tool output to the mean of the dynamic torque and verifies process is within Engr. specification.扭矩过程输出:是短期研 究.记录20个连续值,并将工具设定在动态扭矩值的中间值,确认过程满足 工程规范的要求. – Torque Process Capability is continuous data collecting in subgroups of 5 values at predetermined intervals used for x-bar-r control charts and Cp and Cpk values.扭矩过程能力:按规定的时间间隔,连续测量1个子组5 件产品的扭力,用来做Xbar-R图及计算Cp和Cpk值.
• • • • Measuring the length of the fastener 测量紧固件的长度 Using a load cell in the joint有接合处用一个负载元件 Using strain gauges on the fastener在坚固件上用张力量具 Using ultrasonic measurements用超声波测量
– Full TPPS requires a minimum of three (3) separate subgroups of 20 data values of both dynamic and residual 复杂的TPPS 要求最少3个子组, 每个子组至少连续20个数据,包括测量动态和残余扭矩值.
过程潜在研究确定的.
– TPPS dynamically centers the tool at the specification mean, determines its process potential (Pp & Ppk), measures the resulting residual torque value. TPPS是 将工具设定在规范中值,确定它的初始过程能力 (PP&PPK),测量产生的残余扭矩值 – The analysis of the residual data determines the inspection limits for that process. 分析残余扭力值
• Mini TPPS has the same definition as the Torque Process Potential Study listed above with exception of the sample size taken.简单的 TPPS 除了抽取样本的大小不同,其他与上面提到的TPPS相同.
确定扭力监控的限值.
How to Determine Capability of a Torque Process? 如何确定扭矩过程能力?
• 3 Basic Methods: Torque Process Potential, Process Prove out, and Process Capability 3种基本方法:扭力过程潜在研究,过 程输出,和过程能力
– The best we can do is measure Torque工厂最好办法就是测量扭矩我们该如何测量扭矩?
• • Dynamic torque is electronically measured with a transducer during the securing process of a fastener. (Setting Torque) 动态扭矩是在旋紧紧固件过程中通过传感器自动测量(设定扭矩值) – It does not take into account changes that occurs to joint clamp load after processing point. 它不会考虑装配后接合处扭矩的变化. – It is used to center a tool at the mean of the torque specification (setting torque) and to monitor the process.将扭力工具设定在规范的中间值(设定扭 力),以监控扭紧过程. Residual torque is measured through minimal rotation, in the tightening direction of a secured fastener. (Breakaway or Static)残余扭矩是沿紧固件旋紧方向通过测 量最小旋转力(分离或静态) – It is the torque left in the joint after fastener installation. 它是在紧固件装配后 残留在接合处的扭矩. – Measurement is made by rotating the fastener a few degrees more in the tightening direction with a hand-held torque wrench.测量是用手持扭力扳手在 紧固件沿紧固方向旋转,紧固件刚旋转时测量的扭力值.
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How to Determine Residual Limits?如何确定残余扭力的控制限?
• Residual limits are determined by performing a Torque Process Potential Study (TPPS) on the operation. 残余扭力的限值是通过实施扭力
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What is Torque?什么是扭矩?
• Simply stated, torque is the force that turns a threaded fastener (screw, nut, bolt).简单地说,扭矩就是旋转有螺纹的 坚固件(螺栓,螺母,螺钉)力矩
– The primary function of these fasteners is to hold or clamp parts together.紧固件的主要作用是连接或夹紧零件. – It is important that adequate clamp load exist. 足够的剪切力很重要. – Clamp Load is difficult to measure in a production environment, it is done in a laboratory by在生产环境中剪切力的测量是很困难的, 在实 验室可由以下方式测得:
– Mini TPPS is a short study which records 30 consecutive torque values. 简单的TPPS是短期过程研究,它只记录30个连续的扭矩值.
• If this study indicates that either the dynamic or the residual data cannot be contained within the Engineering Specification Range, a longer study is required 如果简单的TPPS研究显示,动态或残余数据不能满足工程规范要求, 就需要进行长期的研究.
Torque Integrity Assurance Program Training 扭矩保证程序培训
AP&A Manufacturing Quality 5/19/2006 Rev 2
Preparing your plant for TIAP工厂准备
• Set up a Fastening System Control Team建立扭力控制小组 – Identify a champion (Final Area Manager)确定一名领导(总装区域经理) – Identify a supervisor or team leader (Torque expert or engineer)确定一名 主管或小组组长(扭矩专家或工程师) – Identify other team members and functions (Torque auditors, power tool repairmen and TPPS personnel)确定其他多功能成员(扭矩审核员,工具维 修人员和TPPS人员) Read procedures & standards (VOPFAN241, PT-3, PT-5) Located in AP&A e-room阅读程序和标准(VOPFAN241, PT-3, PT-5) Develop computerized list of torque tools with calibration requirements建立软 拷贝的扭矩清单(包含校准要求) Develop a documented audit route 开发书面的扭力检查路线 Develop files to keep records and reports used to manage your torque program建立专用文件夹来保存扭力控制的记录和报告. Perform torque assurance self assessment执行扭矩保证自我评估.