Fixtec Power Tools Co., Ltd. , http://www.fixtec-tools.com
Rally machine maintenance should pay attention to the following points :
First, when the tension machine is repaired, it should first consider the difference in the range of the quality required pull force, determine the different sensors used, and thus determine the structure of the pull machine. For general flexible packaging manufacturers,
A pull range of 100N is sufficient. Generally use a single arm type on it. Relative to the gate structure cost is lower. The gate structure is adapted to a relatively large pulling force, such as 1T or more.
Second, the problem of the test stroke when the tension machine maintenance According to the performance and requirements of the flexible packaging film test, the stroke can be 600-800mm. Materials with an elongation of more than 1000% can be used with a stroke of 1000 or 1200mm.
Third, the output of the tensile machine repair test results The test results can be arbitrarily set: the maximum force value, elongation, tensile strength, elongation at a fixed force, the value of the fixed elongation, yield strength, elastic modulus, maximum test force 8 item. This can be said to be the most comprehensive result of the output of the microcomputer. Some foreign manufacturers' products can generally output these 8 items. Some domestic manufacturers can output 5-6 items, and some manufacturers can only output the maximum force value, average value, and minimum value.
Fourth, when the tensile machine maintenance can be done in the experimental project on the flexible packaging requirements of a multi-purpose pull machine, which is equipped with different fixtures on the basis of stretching, compression, bending, tearing, shearing, 180 ° peel, 90 ° Peel test. There are some high-grade tensile machines on the market that, in addition to the above items, can also test the friction coefficient because of their high sensor accuracy (some of which reach 250,000th of one million).
V. Rally machine maintenance The three basic configuration of the standard configuration problems intelligent: host, microcomputer, and printer, if the microcomputer can print directly. In addition can also be equipped with ordinary computers. With a computer, you can perform complex data analysis, such as data editing, local magnification, adjustable report formats, and statistical analysis of grouped patterns. If equipped with a computer, the manufacturer should be added to the corresponding control system.
Six, Rally machine repair products mainly equipped with mechanical transmission, screw drive and rack drive, the former is expensive, for high-precision, test repeatability is high; the latter is cheap, for low accuracy, test repeatability is low. Screws have a decisive effect on the accuracy of tension measurements. General ball screw, trapezoidal screw, general screw. Among them, the accuracy of the ball screw is the highest, but the performance of the ball screw depends on the operation of the computer servo system to play, the entire package price is also relatively expensive. The general screw and trapezoidal screw can be used to achieve the required precision of the flexible packaging, ie 0.5-1% accuracy. Transmission, gear transmission and chain drive, the former is expensive, used for high precision; the latter is cheap, used for low precision. The main cost of sensors is life. Photoelectric sensing is one of the more advanced technologies. It can generally be used more than 100,000 times.
Tensile machines are also called tensile testing machines or universal material testing machines. Tensile testing of tensile testing machines: Tensile testing (stress-strain testing) is generally carried out by clamping two ends of a material sample to two fixtures at a certain distance. The two fixtures separate and tension the specimen at a certain speed and measure the change in stress on the specimen until the specimen is destroyed. Tensile machine tensile test is one of the most widely used methods to study the mechanical strength of materials. It needs to use constant velocity motion.