Is there any positive or negative rotation of the torsion shear wrench?

扭剪扳手不管是24扳手還是30扳手都沒(méi)有正反轉(zhuǎn)的，只能正轉(zhuǎn)，如果反轉(zhuǎn)應(yīng)該是扳手出現(xiàn)問(wèn)題了。

Torsional shear wrenches, whether 24 wrenches or 30 wrenches, do not have positive and negative rotation. They can only turn forward. If they are reversed, the wrench should have problems.

扭剪扳手有正常套筒，加長(zhǎng)套筒，加長(zhǎng)套筒適用于空間距離受限制區(qū)域。

The torsion shear wrench has a normal sleeve and an extended sleeve. The extended sleeve is suitable for areas with limited space distance.

有些特別狹窄區(qū)區(qū)域需要用角向扭剪扳手。

Some special narrow areas require the use of angle shear wrenches.

扭矩法就是利用扭矩與預(yù)緊力的線性關(guān)系在彈性區(qū)進(jìn)行緊固控制的一種方法。該方法在擰緊時(shí)，只對(duì)一個(gè)確定的緊固扭矩進(jìn)行控制，因此，因?yàn)樵摲椒ú僮骱?jiǎn)便，是一種一般常規(guī)的擰緊方法。但是，由于緊固扭矩的90%左右作用于螺紋摩擦和支承面摩擦的消耗，真作用在軸向預(yù)緊力方面僅10%左右，初始預(yù)緊力的離散度是隨著擰緊過(guò)程中摩擦等因素的控制程度而變化的，因而該擰緊方法的離散度較大，適合一零件的緊固，不適合重要的、關(guān)鍵的零件的連接。

Torque method is a method of tightening control in the elastic zone by using the linear relationship between torque and preload. This method only controls a certain tightening torque when tightening. Therefore, because this method is simple to operate, it is a general conventional tightening method. However, about 90% of the tightening torque acts on the consumption of thread friction and bearing surface friction, and only about 10% of the actual effect is on the axial preload. The dispersion of the initial preload changes with the control degree of friction and other factors in the tightening process. Therefore, the dispersion of this tightening method is large, which is suitable for the tightening of a part, not for the connection of important and key parts.

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