【 Leading technology 】 Know the way to the law

【 Leading technology 】 Know the way to its 2019 - 03 - 11 ( Timken) The zhuangzi dao (one of the wheel flat rationalism ( 卓 ） Wheel, when is the spring and autumn period and the qi famous building cars workers round flat with his axe with a knife cut wood manufacturing wheel as an example and the story of the duke debate. In 'round flat even wheel' story, round flat yue: 'rationalism wheel, xu is not solid, disease is not into the bitter, xu disease, is to the hand and should to the heart, the mouth cannot speak, have saved how between'. It is their own rich experience in manufacturing wheel: the use of timber production wheels, round hole happy slippage is not strong, the round hole contraction spokes sluggish acerbity into hard, only constant practice to do not loose not tight, just right, and the language can't talk. Know the way, can with ease of more than two thousand years ago 'round round flat even in today's manufacturing, can be understood as tolerance. Fit tolerance is a concept often used in the field of mechanical equipment, to form fit tolerance of hole and shaft, the sum of amount of change is to allow clearance or interference. In the bearing application field, the accuracy of the fit tolerance directly affects the equipment performance, and its choice need comprehensive many factors, such as rotating speed, the size of the load, the direction of the load, impact load, whether you need clearance adjustment, and the type and material of the bearing, and so on. Therefore, it is important to understand fit tolerance of 'tao'. In machine tool industry, for example, high speed precision angular contact ball bearing inner ring of the fitting quantity generally to accurate to micron level. Because for high speed machine tool spindle, if cooperate with quantity is too small, can produce relatively rotating shaft and bearing inner ring, lead to wear and surface erosion; If the amount is too large, can increase the bearing pre-tightening, produce heat and reduces the speed performance. Timken in this way is both inside and outside the precision angular contact ball bearing ring on micro code, help customers according to the micro code matching with the corresponding shaft in order to achieve accurate quantity. Timken in a successful case of pelletizer industry also fully show our exquisite master of fit tolerance. Wood pelletizer roller parts configuration has two LieDiao heart roller bearings, some brand bearing life can reach 500 hours. Timken provide solution is a pair of spherical roller bearing, the biggest difficulty of this scheme is in addition to the narrow clearance deviation of two bearings, but also control the dimensional tolerance of bearing outside diameter to ensure the fit tolerance of two bearing close, loss by the outer ring fitting clearance is close to, so as to ensure the installation of two bearing clearance after close, four row roller bearing. Practice proves that the solution of timken bearing life up to 2500 hours, is 5 times. Its method, suddenly clear and tolerance in the same way, bearing applications. There will be many details of technical personnel understand the 'tao', to ensure the smooth running of the equipment. Fortunately, human technology development so far we don't have to like the wheel flat 'mouth cannot speak, can only' several deposit how to affect. Now we can with the aid of technology, based on a large number of data acquisition developed bearing analysis software for simulation and analysis. 铁姆肯公司® The Syber is such a powerful software. It can not only according to specific application conditions quickly and accurately calculate the adaptation tolerance value, also can undertake a variety of technical analysis: 1. Bearing clearance and pre-tightening force proposal 2. Verify the lubricating oil ( Fat) Viscosity whether meet the requirements of lubrication coefficient calculation, set the appropriate bearing surface roughness 3. Recommend suitable lubricating oil ( Fat) Flow 4. Calculate the stress distribution, the application of risk assessment and bearing type optimization of 5. Calculation of bearing life, reinforcing 6 on the materials and design. To evaluate the speed of the bearing performance, recommend suitable pre-tightening and lubrication 7. In addition, the calculated stiffness and deformation of timken has strong ability of finite element analysis is widely used in wind power and automobile, etc. Outside the powerful software analysis ability, timken more pay attention to the test of experiment, theory combined with practice, to provide rigorous and scientific guidance, in time for the customer to reassure ', 'grant. In the field of bearings, timken tirelessly, lean, accumulated rich professional knowledge and experience, and actively share with customers, with our unique 'tao' and 'method' help customers solve various problems, enable customers to obtain the most reliable and efficient mode of production. In the future, timken will continue to inject an own strength for the industrial development, in the field of industrial bearing applications, conveying and popular professional, precise bearing application, to promote industrial progress.