电子万能试验机维修时测量精度。精度问题，包括测力精度，速度精度，变形精度，位移精度。这些精度值zui高都可达到正负0.5。但对于一般厂家，达到1%精度就足够了。
Measurement accuracy of electronic universal testing machine during maintenance. Accuracy includes force measurement accuracy, velocity accuracy, deformation accuracy and displacement accuracy. These accuracy values can reach positive or negative 0.5. But for general manufacturers, 1% accuracy is enough.
万能试验机维修时试验速度:市面设备有的在10~500mm/min，有的在0.001~500mm/min，前者一般使用普通调速系统，成本较低，粗糙影响精度;后者使用伺服系统，价格昂贵，精度高，对于软包装企业，选用伺服系统，调速范围1~500mm/min的就足够了，这样既不影响精度，价格又在合理范围之内。
The testing speed of universal testing machine during maintenance: some of the market equipment is in the range of 10-500 mm/min, others in the range of 0.001-500 mm/min. The former generally uses ordinary speed control system with low cost and rough influence on accuracy; the latter uses servo system, which is expensive and high precision. For soft packaging enterprises, servo system is selected with speed control range of 1-500 mm/min. That's enough, so that the accuracy is not affected, and the price is within a reasonable range.
电子万能试验机维修产品机械主要配置：传动，有丝杠传动和齿条传动，前者昂贵，用于高精度，测试重复性高;后者便宜，用于低精度，测试重复性低。丝杠，金属材料试验机对拉力精度测量具有决定作用。一般的有滚珠丝杠，梯形丝杠，一般丝杠。其中，滚珠丝杠的精确度zui高，但是其性能的发挥要靠电脑伺服系统操作才能发挥，整套价格也比较昂贵。采用一般丝杠和梯形丝杠就可以达到软包装所要求的精度，即0.5-1%精度。传动，有齿轮传动和链条传动，前者昂贵，用于高精度;后者便宜，用于低精度。传感器，主要成本在于寿命，光电是其中比较先进的技术，一般可用十万次以上，进口和国内部分合资厂家可以达到更好技术。
Maintenance products of electronic universal testing machine are mainly equipped with transmission, screw drive and rack drive, the former is expensive, used for high precision and high repeatability of testing; the latter is cheap, used for low precision and low repeatability of testing. Lead screw and metal material testing machine play a decisive role in the measurement of tension accuracy. Generally there are ball screw, trapezoidal screw, general screw. Among them, the accuracy of ball screw Zui is high, but its performance depends on the operation of computer servo system to play, and the price of the whole set is relatively expensive. The precision required by soft packaging can be achieved by using general lead screw and trapezoidal lead screw, i.e. 0.5-1% accuracy. Drive, there are gear drive and chain drive, the former is expensive for high accuracy; the latter is cheap for low accuracy. Sensors, the main cost is life, photoelectricity is one of the more advanced technology, generally can be used more than 100,000 times, imported and domestic joint venture manufacturers can achieve better technology.
电子万能试验机维修时在可做实验项目上。软包装要求拉力机一机多用，即在配备不同夹具的基础上，可做拉伸、压缩、弯曲、撕裂、剪切、180度剥离、90度剥离试验。市面上有一些高档拉力机除以上项目外，因其传感器精度高(有的达到二十五万分之一)还可以测试摩擦系数。
When the electronic universal testing machine is repaired, it can be used for experimental projects. Soft packaging requires a multi-purpose tension machine, that is, on the basis of equipping different fixtures, tension, compression, bending, tearing, shearing, 180 degree peeling, 90 degree peeling test can be done. In addition to the above items, there are some high-grade tension machines on the market, because of their high precision sensors (some up to one in 250,000) can also test the friction coefficient.