Tensile testing machine how to configure the right screw?
Tensile testing machine how to configure the right screw? Believe that many customers friends want to know about the problem, before the solution to this problem, we first to get to know what is the lead screw and screw under their respective characteristics? Screw is our instrument is common to all kinds of testing machine accessories, such as: universal material testing machine, tensile testing machine and other precision testing instruments commonly used in the transmission components, its main function is to convert rotary motion to linear motion, or convert torque into axial force repeatedly, at the same time combines the characteristics of high accuracy, reversibility and high efficiency. Because of the very small friction resistance. So, a lot of customers in the choose and buy of precision testing instruments, such as universal material testing machine, tensile testing machine, the screw on the issue of struggle for a long time, is the choice ball screw or trapezoidal screw? This paper will detail for you under the characteristics of the two specific what are the differences? 1, the service life: the surface of the rolling friction damage than many sliding friction small, therefore, to maintain life of ball screw than trapezoidal screw is relatively higher. 2, self-locking: self-locking sex generally is inversely proportional to the transmission efficiency, transmission efficiency is higher, the self-locking sex. As a result, almost no self-locking ball screw, and have certain self-locking trapezoidal screw. 3, transmission efficiency: ball screw because the ball screw attached between the screw nut and screw shaft has a lot of rolling ball doing sports, so the movement of high efficiency. If the driver of the same size of load, the use of ball screw can use smaller driving power, using a smaller power tension tester, as well as reduce the cost, can reduce energy consumption. 4, transmission speed: ball screw is the rolling friction, trapezoidal screw is sliding friction, the rise of temperature of the work while the former is much lower than the latter, the ball screw can bear the high-speed transmission tasks. 5, economy: from before the tensile testing machine and the present situation, selects the ball screw because of its structure is relatively complex trapezoidal screw, the price is higher than the trapezoidal screw. However, as the increasing of the universal material testing machine, testing instruments and production increase, price difference is smaller and smaller. Ball screw is on ball belongs to rolling friction, high speed and precision, but is not suitable for heavy load! And trapezoidal screw, it is sliding friction, low efficiency, the precision is low, but a good rigidity, used in heavy load. Ball screw transmission of meshing clearance can be arbitrary adjustment, in order to achieve the ideal matching accuracy, it is especially important to reduce the directional error. The fitting clearance of trapezoidal screw, it is hard to adjust it. In a word, the importance of tensile testing machine fittings ball screw and trapezoidal screw in many cases are not interchangeable, always need to make a trade-off between accuracy, stiffness and load capacity. Not necessarily completely correspondence between the specifications and performance. So, it is impossible to make a decision after you weighed, might as well listen to the supplier's advice, professional to professional people to do, always can't go wrong. Tensile testing machine is used widely, cooperate with different jig, can do different test, is an economic and practical precision equipment. https://www. gesterinstruments。 Com/tags: & nbsp tensile testing machine & NBSP vendors would & NBSP ball screw tensile machine & NBSP factory house
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