At present, research on fixed torque electric wrenches mainly focuses on digital explicit fixed torque electric wrenches that have both fixed value and overload fault functions, and are popular among users through the user-friendly design of LCD display windows. In addition, there are torque value monitoring terminals, peak setting and alarm functions, wireless transmission functions, communication with installed wireless transmission terminals, data recording and management.

從傳統(tǒng)的手指扭矩扳手到各種社會功能的數(shù)字式顯式固定扭矩電動扳手，隨著信息技術(shù)的發(fā)展可以實現(xiàn)了質(zhì)的飛躍。現(xiàn)有的定扭矩電動扳手具有以下幾個優(yōu)點(diǎn):

From traditional finger torque wrenches to digital explicit fixed torque electric wrenches with various social functions, with the development of information technology, a qualitative leap has been achieved. The existing fixed torque electric wrenches have the following advantages:

①技術(shù)不斷成熟，性能比較穩(wěn)定;

① The technology is constantly maturing and the performance is relatively stable;

（2）人性化管理操作系統(tǒng)界面;強(qiáng)大的數(shù)據(jù)分析處理主要功能等。

(2) Humanized management operating system interface; Powerful data analysis and processing main functions, etc.

固定扭矩電動扳手缺點(diǎn):系統(tǒng)進(jìn)行組件多任務(wù)復(fù)雜性文獻(xiàn)中提出了作為一種人工智能扭力扳手系統(tǒng)，包括企業(yè)電子標(biāo)簽、扭力扳手、信息資源管理會計軟件等，通過建立一系列發(fā)展智能手機(jī)芯片來完成一個必要的功能。使用扳手系統(tǒng)時，須能夠同時啟動計算機(jī)并對螺栓信息編號，創(chuàng)建網(wǎng)絡(luò)信息記錄學(xué)生管理分析軟件，并在相應(yīng)的螺栓上粘貼電子標(biāo)簽。力矩扳手的功能需要在教學(xué)準(zhǔn)備教育工作任務(wù)完成后我們才能充分發(fā)揮，效率低，操作過程復(fù)雜。類似的扭力扳手結(jié)構(gòu)比較復(fù)雜。準(zhǔn)確性和困難目前，市場上的定扭矩電動扳手在精度和上都是難題。高精度扳手一般是數(shù)字式定扭矩電動扳手，進(jìn)口產(chǎn)品，水平一般來說較高。低的是扭力針扳手結(jié)構(gòu)相對簡單，精度低，難以滿足人們使用不同要求。這也是扭矩扳手在相關(guān)知識領(lǐng)域方面沒有能力得到廣泛應(yīng)用的原因之一。

Disadvantages of fixed torque electric wrenches: The system is proposed as an artificial intelligence torque wrench system in the literature, which includes enterprise electronic tags, torque wrenches, information resource management accounting software, etc., by establishing a series of development smartphone chips to complete a necessary function. When using the wrench system, it is necessary to be able to simultaneously start the computer and number the bolt information, create a network information security record student management analysis software, and paste electronic labels on the corresponding bolts. The function of torque wrenches needs to be fully utilized after the completion of teaching preparation and educational tasks, resulting in low efficiency and complex operation process. Similar torque wrenches have a more complex structure. Accuracy and Price Difficulties Currently, fixed torque electric wrenches in the market are difficult in terms of accuracy and price. High precision wrenches are generally digital fixed torque electric wrenches, imported products, and generally have a higher price level. The low price is due to the relatively simple structure and low accuracy of the torque needle wrench, which is difficult to meet people's different requirements for use. This is also one of the reasons why torque wrenches do not have the ability to be widely applied in related knowledge fields.

智力低下?，F(xiàn)有的固定扭矩電動扳手具有應(yīng)用扭矩值和監(jiān)測扭矩值的能力，但需要手動設(shè)置多少扭矩值才能適用于不同規(guī)格的螺栓。不同螺栓的預(yù)緊力矩值可參照有關(guān)手冊或公式計算。目前，只有一些特殊行業(yè)的產(chǎn)品有預(yù)壓螺栓的信息。普通螺栓預(yù)緊力的具體值是根據(jù)經(jīng)驗確定的，這是阻礙使用定扭矩電動扳手的原因之一。

Intellectual disability. The existing fixed torque electric wrenches have the ability to apply torque values and monitor torque values, but they require manual setting of how many torque values are suitable for different specifications of bolts. The pre tightening torque values of different bolts can be calculated by referring to relevant manuals or formulas. At present, only some special industry products have information on pre pressed bolts. The specific value of pre tightening force for ordinary bolts is determined based on experience, which is one of the reasons hindering the use of fixed torque electric wrenches.