| 有哪些因素影响着拉力机的测量精度？ |
| 添加时间：2019/2/25 19:27:35 浏览次数： |
| 1 、拉力机的力值传感器，要知道一台试验机的精度和测力稳定性是由传感器的好坏来决定的，目前市场上的拉力机所使用的传感器大力值一般用轮輻式传感器，小力值一般则用S型传感器，传感器内部一般为电阻应变片式，如果应变片精度不高或固定应变片用的胶抗老化能力不好在或者传感器的材料不好都将影响传感器的精度和使用寿命。 1. Force sensor of tension machine, we should know that the accuracy and stability of a test machine are determined by the quality of the sensor. At present, the force of the sensor used in tension machine on the market is generally spoke type sensor, while the small force is generally S type sensor. The inside of the sensor is generally resistance strain gauge type, if the precision of strain gauge is not high or the glue used for fixing strain gauge. The inadequate anti-aging ability or the inadequate material of the sensor will affect the accuracy and service life of the sensor. 2 、驱动传感器运动的部件滚珠丝杠，因为丝杆如果有间隙的话将来做出的试验数据，将直接应响试验的最大变形和断后伸长率。目前市场上的拉力机有的丝杆是用T形普通丝杆，这样的话一是间隙比较大，二是磨擦力比较大使用寿命短。 2. The ball screw, which drives the sensor to move, will directly respond to the maximum deformation and elongation of the test if the screw has clearance. At present, some of the screw rods in the market are T-shaped ordinary screw rods. In this way, the gap is larger, and the friction force is shorter than ambassador's service life. 3、拉力机的传动系统，目前市场上的拉力机传动系统有的采用减速机，有的采用普通皮带，这两种传动方式的主要弊端：前种需要定期加润滑油，后种则保证不了传动的同步性影响试验结果。 3. The transmission system of puller, some of the current market puller transmission systems adopt reducer, some use ordinary belt, the main drawbacks of these two transmission modes: the former need regular lubrication, the latter can not guarantee the synchronization of transmission to affect the test results. 4 、拉力机的动力源（电机）也叫马达，目前市场上有的拉力机采用普通三相电机或变频电机，这种电机采用模拟信号控制，控制反应慢，定位不准确，一般调速范围窄，有高速就没了低速或有低速就没了高速，并且速度控制不准确。 4. The power source (motor) of the tractor is also called motor. At present, some tractors on the market use ordinary three-phase motor or variable frequency motor. This kind of motor adopts analog signal control, which has slow control response, inaccurate positioning and narrow speed range. If there is high speed, there will be no low speed or low speed, there will be no high speed, and the speed control is inaccurate. 5 、万能试验机拉力机的测控系统（也就是软件和硬件），目前市场上大部分拉力机的测控系统采用的是8位的单片机控制，采样速率低，且抗干扰能力差，另外就是AD转换器如果AD转换器的位数也就是分辨率低的话。那么测量也不会准。 5. The measurement and control system (i.e. software and hardware) of the universal testing machine puller. At present, most of the measurement and control systems of the puller in the market are dakeluo.89ix.comdiaosu.71ix.comjinggaiz.89ix.comwusuanna.89ix.com jinggaif.89ix.comliuliangji.37ix.com.cncontrolled by 8-unit single-chip computer. The sampling rate is low and the anti-interference ability is poor. Another is the AD converter if the digit of the AD converter is low resolution. Then the measurement will not be accurate. |
| 上一页 塑料拉力机基本操作步骤 |
| 下一页 橡胶拉力机的功能都有哪些呢? |
Copyright © 技术支持：遨游网络