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公开(公告)号：EP2391876A2
公开(公告)日：2011-12-07
申请号：EP08736942.7
申请日：2008-04-11
CPC分类号： G01L5/0042 , G01L5/24 , G01L25/003
摘要： A variable torque-rate test point for the performance testing of rotary tools for threaded fasteners comprises a screw-threaded bolt (1) having a moment of inertia comparable to that of a bolt to be tightened using the rotary tool. The bolt (1) is tightened in the test joint against a torque-rate adjustment device (6) which can be adjusted to simulate a hard or a soft joint. The adjustment device (6) comprises a washer portion (7) beneath the bolt head (4), at least one spring beam (8) extending from a reaction point (9) radially outwardly of the bolt (1), and a pivotal bearing member (10) or other pivot means at a mid portion of the beam (8). The beam (8) flexes as it extends in cantilever over the pivot point, and that flexure can be adjusted to vary the torque-rate of the test joint by varying the distance between the pivot point and the rotary axis of the bolt (1).
摘要翻译： 一种可变扭矩速率测试点的旋转工具对螺纹紧固件的性能测试包括螺纹螺栓（1）具有的转动惯量媲美做了螺栓的使用旋转工具紧固。 螺栓（1）中针对可被调节，以模拟硬或软接头的关节扭矩速率调整装置（6）的测试被拧紧。 所述调节装置（6）包括一个垫圈部（7）的螺栓头下方（4），至少一个弹性梁（8）从反应点（9）沿径向向外的螺栓（1），和一个枢转轴承扩展 构件（10）或在所述光束（8）的中间部分以外枢轴。 束（8）弯曲，因为它在悬臂在枢轴点延伸，并没有挠曲可以调整通过改变枢转点和所述螺栓的旋转轴线之间的距离，以改变测试接头的转矩率（1） ，
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公开(公告)号：EP2529193B1
公开(公告)日：2014-03-05
申请号：EP11700282.4
申请日：2011-01-10
CPC分类号： G01L25/003 , G01C17/00 , G01L5/243
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公开(公告)号：EP2529193A1
公开(公告)日：2012-12-05
申请号：EP11700282.4
申请日：2011-01-10
CPC分类号： G01L25/003 , G01C17/00 , G01L5/243
摘要： The invention provides a variable torque-rate test joint for the performance testing of rotary tools for threaded fasteners. In a typical test routine a nut (1) is repeatedly tightened by the tool and after each tightening the nut (1) must be released and run back to its start position. The invention provides a means for rapidly releasing the pressure on the tightened nut (1) so that it can be run back quickly and easily. The variable joint is supported by a reaction surface (4) that is the operative face of a piston and cylinder assembly (9, 11) seated on a shoulder (8) fast to a shank (2) of the threaded fastener. A hydraulic control (12, 13) is provided for the piston and cylinder assembly (9, 11), including means for hydraulically extending the piston from (11) the cylinder (9) to a fixed maximum extension which defines a test position of the reaction surface (4), and means for hydraulically retracting the piston (1) back into the cylinder (9) to remove the pressure from the nut (1) at the end of the test. During tightening the piston (11) is extended and preferably hydraulically locked.
摘要翻译： 本发明提供了一种用于螺纹紧固件旋转工具性能测试的可变扭矩测试接头。 在一个典型的测试程序中，螺母（1）被工具反复拧紧，并且在每次拧紧后，螺母（1）必须被释放并返回到其起始位置。 本发明提供了一种用于快速释放被紧固的螺母（1）上的压力以使其能够快速且容易地返回的装置。 可变接头由反作用面（4）支撑，所述反作用面（4）是紧靠螺纹紧固件的柄部（2）安置在肩部（8）上的活塞和缸组件（9,11）的工作面。 为活塞和缸体组件（9,11）提供了液压控制装置（12,13），包括用于将活塞从（11）缸体（9）液压地延伸到固定的最大延伸部的装置，该最大延伸部限定了 反作用表面（4）以及用于将活塞（1）液压地缩回到气缸（9）中以在测试结束时从螺母（1）移除压力的装置。 在拧紧过程中，活塞（11）伸出并优选液压锁定。
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公开(公告)号：EP1075646B1
公开(公告)日：2004-09-22
申请号：EP99920957.0
申请日：1999-05-04
IPC分类号： G01L25/00
CPC分类号： G01L25/003
摘要： An apparatus for calibrating rotary power assembly impulse tools comprises a variable rate simulated test joint in which a rotary shaft is braked by brake shoes in direct contact with the shaft under the control of a computer. The braking torque applied to the shaft by the brake shoes is gradually increased while the shaft is driven at free-running speed by the tool being calibrated, and the pulsed output of the impulse tool is monitored. The monitored pulsed output is initially erratic, but settles down to a regular stream of output pulses. The first pulse of that regular stream can be identified. The magnitude of the braking torque is then increased as a linear function of time with a predefined gradient representative of the torque rate of the joint being simulated, commencing with the identified first pulse. The apparatus is the first such apparatus to be able to provide thoroughly reliable and consistent torque calibration for impulse tools.
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