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1、美国英格索兰公司美国英格索兰公司 拧紧基础知识拧紧基础知识拧紧机资料之一工具形式及选择工具形式及选择 POSITIVESPOSITIVES正版的正版的 High power to weight High power to weight ratioratio高的功率重量比高的功率重量比 FastFast速度快速度快 No ReactionNo Reaction反作用力小反作用力小 Non Technical Non Technical MaintenanceMaintenance不需要专门不需要专门 的维护的维护 CompactCompact紧凑紧凑 InexpensiveInexpensive
2、物美价廉物美价廉NEGATIVESNEGATIVES盗版的盗版的 Little or No controlLittle or No control半受半受 控或不受控控或不受控 NoisyNoisy有噪音有噪音 High VibrationHigh Vibration高振动高振动冲击扳手冲击扳手冲击扳手结构冲击扳手结构双锤式大型锤滚珠凸轮机构NEGATIVES消极t Torque Readoutt Run down speedt Two Hand Operation (angle wrenches)POSITIVES积极tGood Repeatabilityt Inexpensivet Low
3、 Overshoot离合器型气动工具离合器型气动工具价格适宜低过冲可重复性好运行速度下降双手操作自己读力矩 Once pre set torque Once pre set torque is delivered to the is delivered to the joint, Clutch spring joint, Clutch spring gets compressed gets compressed triggering the triggering the mechanism to shut mechanism to shut off air supply to the off
4、air supply to the motor, providing motor, providing excellent excellent repeatability.repeatability.一旦预先设定 的扭矩传递到结合处，离合器弹簧压缩， 触发空气供应切断机制运行 ，并能重复性 工作，且效果优良。离合器自动断气型扳手离合器自动断气型扳手扭矩推杆马达 末端离合器 弹簧离合器 调节螺 母螺丝 起子POSITIVESPOSITIVES Accurate Accurate Low NoiseLow Noise CleanClean Closed - Loop FeedbackClosed
5、- Loop Feedback ErgonomicErgonomic Low Running CostLow Running Cost Can be interfaced with Can be interfaced with PLCsPLCs and and BCRsBCRsNEGATIVESNEGATIVES High Initial InvestmentHigh Initial Investment Torque ReactionTorque Reaction Two hand operation Two hand operation (angle tools)(angle tools)
6、电动拧紧机电动拧紧机精确噪音低清洁闭环反馈人体工程学运行成本低可以与控制系统和BCRs连接初始投 资高扭矩反作用两手操作拧紧机控制柜拧紧机控制柜拧紧工具选择拧紧工具选择Operator ErgonomicsOperator Ergonomics (Reaction, Tool Weight, Arm (Reaction, Tool Weight, Arm Position, Frequency)Position, Frequency)Cycle RateCycle RateFastener and Drive TypeFastener and Drive TypeAccess to Faste
7、nerAccess to Fastener (Size and Space Constraints)(Size and Space Constraints)Joint CriticalityJoint CriticalityData Collection Data Collection Torque LevelTorque LevelBudgetBudgetPower SourcePower SourceMaintainabilityMaintainabilityTightening StrategyTightening Strategy拧紧策略可维修性动力源数据采集结合处的危险程 度预算紧固
8、件通道扭矩等级循环速率紧固件和 驱动形式人机工程学 的应用（反 作用力，工 具重量，力 臂位置，频 率）拧紧工具选择综述拧紧工具选择综述 Reliable bolted joints are dependent on many factors:Reliable bolted joints are dependent on many factors:Fastener quality and typeConsistency of joint materialsAssembly tool usedAssembly method or strategyOperator InfluenceFrictio
9、nal ScatterMaintenance of bolt clamp load Tool and assembly method selection should occur early Tool and assembly method selection should occur early in the design process to be most effectivein the design process to be most effective螺栓连接的可靠性影响因素很多：紧固件质量和类型联合材料的一致性所用的工具安装方法或策略操作人员的影响摩擦的传递螺栓夹紧力的保持工具和
10、装配方法的选择应在设计过程中及早进行，这样才最有效扭矩测量术语扭矩测量术语 动态扭矩动态扭矩 - - Peak Torque Measured During the Installation of a Fastener Using Peak Torque Measured During the Installation of a Fastener Using a Power Toola Power Tool- The Preferred and Most Accurate Measurement For - The Preferred and Most Accurate Measurement
11、 For Assembly Statistical process ControlAssembly Statistical process Control 峰顶扭矩测量应用在用扭力工具进行的紧固件安装中-这是统计过程控制 最恰当最精确的测量方法。 静态扭矩静态扭矩 - - Torque Value That Exist Without Producing Rotation in a FastenerTorque Value That Exist Without Producing Rotation in a Fastener在在 紧固件之间不发生相对旋转的扭矩值紧固件之间不发生相对旋转的扭矩值
12、 - Used Only as an Indication of a Minimum Torque- Used Only as an Indication of a Minimum Torque只作为扭矩最小值的象征只作为扭矩最小值的象征残留扭矩残留扭矩 - - Torque Measured After Fastener is Installed by Rotating The Fastener in Torque Measured After Fastener is Installed by Rotating The Fastener in Tightening DirectionTigh
13、tening Direction 在紧固件拧紧后进行扭矩测量在紧固件拧紧后进行扭矩测量 - Can Have Significant Measurement Error depending on equipment used to - Can Have Significant Measurement Error depending on equipment used to Audit TorqueAudit Torque 由于扭矩测量设备的不同而出现明显的测量误差由于扭矩测量设备的不同而出现明显的测量误差扭矩测量扭矩测量 “ “标记法标记法 Back-to-the-Mark”Back-to-t
14、he-Mark” 准确度准确度: : 高高方便性方便性/ /速度速度 : : 低低Mark then loosen Bolt. Tighten Back to Original Position 标记后柠松螺栓，再拧紧回初始位置。 Truly Checks Dynamic Tightening Torque 切切实实的检查动态拧紧扭矩 Works Only in Tapped Holes这种方法只适用于螺纹孔 Time Consuming耗费时间扭矩测量扭矩测量 “ “Off-torque”Off-torque” 松动扭矩松动扭矩 准确度准确度: : 低低方便性方便性/ /速度速度: : 中中
15、Measure Peak Loosening Torque测量松动扭矩的峰值Measurement of Off-Torque Does Not Relate Accurately to Tightening Torque松动扭矩与拧紧扭矩没有明确的联系扭矩测量扭矩测量 定扭矩扳手定扭矩扳手 准确度准确度: : 低低方便性方便性/ /速度速度: : 高高Apply Torque Until Wrench Clicks at Set Torque扳手发出响 声时所施加的扭矩即为设定扭矩Not a Real Audit Method - Basically a Torque Re-Applicat
16、ion Method不是一种真正的检测方法,基本上是一种扭矩再应用检 测Only Gives Assurance That Inspected Fastener Has Been Tightened只能确定检测的紧固件已经被拧紧扭矩测量扭矩测量 测扭矩扳手测扭矩扳手准确度准确度: : 低低方便性方便性/ /速度速度: : 中中Apply Torque Until Operator Senses Movement操作人员能够感应到 移动之前的扭矩为适合扭矩Read Peak Torque on Tool Indicator从指示器上读出峰值扭矩Subject to Operators Skill and Joint Conditions收到操作者技能水平 和连接条件的限制扭矩测量扭矩测量
