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Din 15070 17


Din 15070 17: A Standard for Crane Rail Wheels and Their Calculation




Crane rail wheels are essential components of press brake machines, which are devices that bend sheet metal into various shapes and forms. Crane rail wheels are responsible for supporting and moving the sheet metal along the rails during the bending process. Therefore, it is important to choose the right crane rail wheels and calculate their dimensions and forces correctly.




Din 15070 17


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One of the standards that can help you with this task is Din 15070 17. This is a standard that provides the basis of calculation for crane rail wheels and their matching with rails. Din 15070 17 covers the aspects of material selection, pressure calculation, wheel force calculation, wheel diameter calculation, characteristic wheel force calculation, and permissible wheel force calculation. Din 15070 17 also provides tables and formulas that can help you perform these calculations easily and accurately.


In this article, we will tell you more about Din 15070 17, its contents and applications, and how you can use it to improve your press brake performance.


What is Din 15070 17?




Din 15070 17 is a standard that was published by the German Institute for Standardization (DIN) in 1984. It is titled "Basis of calculation for crane rail wheels". It is based on the recommendations of the European Federation of Materials Handling (FEM) in its document FEM 1.001.


Din 15070 17 is a standard that provides the basis of calculation for crane rail wheels and their matching with rails. It applies to crane rail wheels that are used for press brake machines, as well as other types of cranes and hoists. It covers the aspects of material selection, pressure calculation, wheel force calculation, wheel diameter calculation, characteristic wheel force calculation, and permissible wheel force calculation.


Din 15070 17 also provides tables and formulas that can help you perform these calculations easily and accurately. It also provides examples of calculations for different types of crane rail wheels and rails.


Din 15070 17 is a standard that can help you choose the right crane rail wheels and calculate their dimensions and forces correctly.


What are the Contents of Din 15070 17?




Din 15070 17 consists of six sections and two annexes. The sections are:


  • Section 1: Scope. This section defines the scope and application of the standard.



  • Section 2: Symbols and units. This section lists the symbols and units used in the standard.



  • Section 3: Material selection. This section provides the criteria for selecting the material of crane rail wheels and rails. It also provides tables of permissible pressure and material coefficient for different materials.



  • Section 4: Pressure calculation. This section provides the formula for calculating the pressure between crane rail wheels and rails. It also provides tables of speed coefficient and operating time coefficient for different speeds and operating times.



  • Section 5: Wheel force calculation. This section provides the formula for calculating the wheel force of crane rail wheels. It also provides tables of characteristic wheel force for different wheel diameters and rail head widths.



  • Section 6: Wheel diameter calculation. This section provides the formula for calculating the wheel diameter of crane rail wheels. It also provides examples of calculations for different types of crane rail wheels and rails.



The annexes are:


  • Annex A: Characteristic wheel force calculation. This annex provides an alternative method for calculating the characteristic wheel force of crane rail wheels.



  • Annex B: Permissible wheel force calculation. This annex provides an alternative method for calculating the permissible wheel force of crane rail wheels.



Din 15070 17 is a standard that provides comprehensive information on crane rail wheels and their calculation.


How to Use Din 15070 17?




If you want to use Din 15070 17 to improve your press brake performance, you need to follow these steps:


  • Select the material of your crane rail wheels and rails according to section 3 of Din 15070 17. You can use the tables provided in this section to find the permissible pressure and material coefficient for different materials.



Calculate the pressure between your crane rail wheels and rails according to section 4 of Din


  • 15070 17. You can use the formula and the tables provided in this section to find the pressure for different wheel diameters, rail head widths, speeds, and operating times.



  • Calculate the wheel force of your crane rail wheels according to section 5 of Din 15070 17. You can use the formula and the tables provided in this section to find the wheel force for different wheel diameters and rail head widths.



  • Calculate the wheel diameter of your crane rail wheels according to section 6 of Din 15070 17. You can use the formula and the examples provided in this section to find the wheel diameter for different types of crane rail wheels and rails.



  • Alternatively, you can use the methods provided in annexes A and B of Din 15070 17 to calculate the characteristic wheel force and the permissible wheel force of your crane rail wheels.



  • Compare your calculated values with the recommended values given in Din 15070 17. If your values are within the acceptable range, you can use your crane rail wheels and rails as they are. If your values are outside the acceptable range, you may need to adjust your crane rail wheels and rails or replace them with more suitable ones.



Using Din 15070 17 can help you ensure that your crane rail wheels and rails are compatible and suitable for your press brake machine. This can improve your press brake performance by reducing machine down time, set-up time, scrap, errors, and optimizing production.


Conclusion




In this article, we have told you about Din 15070 17, a standard that provides the basis of calculation for crane rail wheels and their matching with rails. We have explained what this standard is, what it contains, and how you can use it to improve your press brake performance. We hope that this article has helped you learn more about Din 15070 17 and decide whether you want to use it or not. If you have any questions or comments, please feel free to contact us.


The article is already complete and does not need to be continued. However, if you want to add some additional information or tips for the readers, you can write something like this:


Additional Information and Tips




Here are some additional information and tips that can help you use Din 15070 17 more effectively:


  • You can download Din 15070 17 from the official website of DIN: https://www.beuth.de/en/standard/din-15070/101545. You can also buy a printed copy or a PDF file from this website.



  • You can also find some online calculators that can help you perform the calculations based on Din 15070 17. For example, you can use this calculator: https://www.karl-georg.de/en/calculation-of-crane-rail-wheels/. However, you should always verify the results with the standard itself and use your own judgment.



  • You should always check the compatibility of your crane rail wheels and rails with your press brake machine and its controller. You should also follow the manufacturer's instructions and recommendations for installing and maintaining your crane rail wheels and rails.



  • You should regularly inspect your crane rail wheels and rails for any signs of wear, damage, or deformation. You should also lubricate them as needed to reduce friction and prevent corrosion.



  • If you have any doubts or difficulties in using Din 15070 17, you can consult a professional engineer or a qualified technician who has experience in press brake programming and crane rail wheel calculation.



Using Din 15070 17 can help you use your crane rail wheels and rails more effectively. However, you should also use your own knowledge, skills, and common sense to ensure the best results.


90 mm


Let us assume that we have a crane rail wheel with a diameter of 250 mm and a rail head width of 90 mm. The material of the crane rail wheel is steel with a minimum tensile strength of 800 N/mm. The material of the rail is steel with a minimum tensile strength of 690 N/mm. The speed of the crane wheel is 80 m/min. The operating time is 16 hours per day.


To calculate the pressure between the crane rail wheel and the rail, we can use the same formula from section 4 of Din 15070 17:


R = pzul c2 c3 d1 (k - 2 r1)


where:


  • R is the pressure in N/mm



  • pzul is the permissible pressure in N/mm



  • c2 is the speed coefficient



  • c3 is the operating time coefficient



  • d1 is the wheel diameter in mm



  • k is the rail head width in mm



  • r1 is the radius of curvature of the rail head in mm



We can find the values of pzul, c2, c3, and r1 from the tables provided in section 4 of Din 15070 17. For this example, we have:


  • pzul = 7.2 N/mm (from table 2, for rail material with minimum tensile strength of 690 N/mm and wheel material with minimum tensile strength of 800 N/mm)



  • c2 = 0.63 (from table 3a, for speed of 80 m/min)



  • c3 = 0.63 (from table 4, for operating time of 16 hours per day)



  • r1 = 6 mm (from table 5, for rail head width of 90 mm)



Plugging these values into the formula, we get:


R = 7.2 0.63 0.63 250 (90 - 2 6)


R = 316350 N/mm


This is the pressure between the crane rail wheel and the rail.


Example 3: Crane rail wheel with a diameter of 300 mm and a rail head width of 6c859133af


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