Software spline calculation the software spline calculation calculates sizes needed for inspection of serration and involute gears and splines spur and helical. This is free software that adds several spline and linear interpolation functions to microsoft excel. This page uses frames, but your browser doesnt support them. Life factor limited by wear, flexible splines table vi. Dimensions over under pins, balls or wire for an involute gear. It suffers from great loads and alternating stress during the runtime. Straighttooth spline strength splines have the same failure mechanisms as keys. The nb ball spline is a linear motion mechanism utilizing the recirculating motion of ball elements. The benefits of using a splined shaft in the place of a keyed shaft are many. Mitcalc mechanical, industrial and technical calculations. Iso 5480 standard applies to splined connections with involute splines based on reference diameters for connecting hubs and shafts either with a removable connection, a sliding fit or a permanent fit.
The nb rotary ball spline can be used for both rotational and linear motion. The computed stress should not exceed the values in the table. Lower stress on attachment gear better fit, less vibration spline integral to shaft so no vibrating may allow axial motion while reacting torque disadvantage. As the data of gears and splines are always given in. Allowing you to solve more complex shafts with more loads, bearings and stress concentrations. The main focus is the sizing of machine elements like gears, shafts, bolts, rolling bearings and more. The analysis of the effective variation, which is defined as the deviation allowance, for the different spline tolerance classes is presented. Stress concentration free spline for high torque twin screw power transmission joe mattingly, steeramerica inc.
The spline calculator also includes calculation bases. Mechanical engineering calculation package includes solutions for gear, belt and chain drives, springs, beam, shaft, bolt connection, shaft connection, tolerances and many others. The torque capacity per unit length of an sae spline is based on a 1,000 psi bearing stress on the sides. Thus, it is essential to conduct a surface hardening process such. Splinewrspan amplitude excursion from one peak to the next represents one span measurement. The spline calculator software calculates the inspection dimensions of spline profiles with serration flanks and of involute gearing straight or helical. Grobs custom spline shaft manufacturing and engineering staff has the browse spline shafts datasheets for grob, inc. L f min l, le in compressive stresses on sides of spline teeth. Calculation example splined shaft according to niemann. Calculate 3d models of spiral bevel gears previously known as gleason or klingelnberg.
Mesys shaft calculation introduction this shaft calculation version 042017, file version 3. The new functions can be used for data analysis, forecasting, and many other applications. Several splines, depending on the diameter, can be placed into one tube. Check the hub option off and inventor will create the feature. Iso 5480 standard applies to splined connections with involute splines based on reference diameters for connecting hubs and shafts either with a removable connection, a sliding fit. The sinusoidal record for this particular spline is an indication of. Ball spline nb ball spline products nippon bearing. They explain the concept of effective variation, actual and effective tooth size. Can carry higher torque for given diameter vs keys. Keys 4 a key is the piece inserted in an axial direction between a shaft and hub of the mounted machine element such as pulley or gear etc. Example spline and analysis results figure 1 shows the contact model for an example clearancefit spline joint that is designed according to ansi standard b92. Axial keys machined into a shaft transmit torque from shaft to another machine element advantages. Albero scanalato ad evolvente intext 24z 2m 30p iso4156 involute spline shaft splined rotary shafts.
Professional calculations of shafts, bearings, gears, shaft hubconnections, springs and timing belts, etc. This section introduces the dimension calculations for spur gears, helical gears, gear rack, bevel gears, screw gears, and worm gear pairs. As the data of gears and splines are always given in different ways, this soft. The spline connection provides an equally distributed load along the sides of the teeth. New measurement method for spline shaft rolling performance. Shaft connection involite spline calculation and design. When your project requires mating parts, look no further click here for more info and specs. Several practical exercises help to understand the functionalities and to. Spline calculations in english units inventor autodesk. Material, application factors and life expectation coefficients can be entered directly, or calulated by wn4. Wn4 calculates compressive stress, spline teeth shear stress, hoop stress, bending stress, torsional stress, and equivalent stress according to sae design guide for involute splines.
Grob spline shafts are made with an even number of teeth and are parallel over two or more teeth. Stress calculation has been carried out for spline shaft using the technical specifications. The splines, grooves, or tongues are machined along the length of the shaft. Inside splines gear solutions magazine your resource to the. Splined shaft coupling issues couplingguru mechanical 11 apr 17 19. Wnxe software calculates dimensions and profile of external spline shaft and internal spline hub.
Shear stress and angle of twist of shaft under torsion. Pitch diameter is assumed as a reference parameter during the analysis. Grobs custom spline shaft manufacturing and engineering staff has. The torque values for straight sided splines in machinerys handbook are approximately the same as what i calculated using psi side load, but the torque we currently have on this shaft is much higher than the calculation or what machinerys handbook shows. Calculation of gear dimensions free gear guide khk gears. Keys are temporary fastening and are always made of mild steel because they are subjected to shearing and compressive stresses caused by the torque they transmit. Calculation report after the completion of your calculation, you can create a calculation report. May, 2018 mitcalc how to calculate and design the involite spline for the shaft. Free gear calculation software, calculate splines, calculate dimention over pins.
It can be used in scara robots, the vertical shaft of assembly equipment, and tool changers and loaders. Between 6 and 50 teeth deutschman, michels, wilson. The system model consists of a shaft, an external spline and an internal spline. The actual developer of the software is frenco gmbh. They mate with a femalesplined bore, gear, bearing, or other mating component. The programs installer is commonly called calculator. The main menu allows you to enter the gear parameters easily. As soon as the software program has been given enough information, all remaining parameters are calculated automatically. Creating hub splines note the shaft creation option is off and inventor is using the splines from the existing shaft to size the hub splines. Spline stress calculation based on when splines need. Grob standard spline shafting has been designed to maximize torsional strength and contact area. The calculations are compatible with many types of 2d and 3d cad systems autocad, autocad lt, intellicad, turbocad, autodesk inventor, solidworks and support both imperial and metric units and are processed. It can be used in a wide variety of applications including robotics and transport type equipment. Mitcalc how to calculate and design the involite spline for the shaft.
Maximum shear stress experimental stress analysis of spline shaft using photo elasticity determination of material fringe value using circular calibration disc the circular disc of 65 mm diameter made of photo elastic material is loaded under diametral compression in polariscope. Calculation of gear dimensions gear dimensions are determined in accordance with their specifications, such as module m, number of teeth z, pressureangle. Aug 20, 2018 spline shaft is an important part of a machine to transmit power or bear torque. In addition to deformations, forces, moments, equivatent stress and bearing life also the strength according din 743 and natural frequencies can be calculated optional with. The nb ball screw spline combines ball screw and ball spline on a single shaft, allowing linear actuation, torque transfer, and rotational motion with a single compact assembly. Mesys ag in zurich switzerland develops software for technical calculations in mechanical engineering. Although it is difficult to establish an equation for them through. Custom spline shafts for agriculture applications even though grob offers you a variety of standard spline shafts to choose from, some applications require a custom spline shaft or custom shapes. Professional calculations of shafts, bearings, gears, shafthubconnections, springs and timing belts, etc. In addition to standardized software also custom software is developed. Shear stress and spline length are calculated based on the assumption that only 25% of the teeth make contact at any given moment. The tooth root of the spline shaft has a risk of fracture due to fatigue stress 1,2,3,4. Spline shafts are mechanical components that provide antirotation when functioning as a linear guide or otherwise transmit torque. Spline wrspan amplitude excursion from one peak to the next represents one span measurement.
In addition, the message window contains the hint that this shaft hubconnection is suitable and can be used. Contact diameter mmtip diameter of spline shaft d h w. Frenco spline calculator is compatible with windows xp7810 environment, 32bit version. Involute splines hexagon mechanical engineering software. The rotation of the splined shaft is transferred to the internally splined member, such as a gear or other rotary device. The system model consists of a shaft, an external spline and. Grobs cold rolled spline shafts are made with an even number of teeth and are parallel over two or more teeth. Spline functions include cubic spline, bessel spline, and oneway spline which is a monotonic spline. Ball spline nb ball spline products nippon bearing nb. Software spline calculator calculating the spline data and inspection dimensions the spline calculator software allows for a quick and uncomplicated calculation of the spline data and inspection dimensions of internal and external.
Contact length of splinetotal length a of involute spline bushing. Webbased calculation software for mechanical engineering. Webbased calculation software for mechanical engineering the webbased software eassistant is an intelligent calculation tool that will definitely pay off right from the first minute. If you are only creating a shaft spline, inventor will still be waiting for the hub. Torque capacity of straight splines mechanical engineering. In addition, the message window contains the hint that this shafthubconnection is suitable and can be used. The calculation is designed for geometric designs and strength checks of shaped connections of shafts with hubs parallel. Export single member analysis reports in an easy and professional format to pass on to your client or fellow engineer.
Standard spline shafts grob standard spline shafting has been designed to maximize torsional strength and contact area. Therefore, there is a corresponding relationship between the dimensional change. The shear stress at the pitch line of the teeth for a transmitted torque t. It is simple to use because the new functions work just like all other existing excel functions. A calculation of different weights of cylinders is included for certain purposes. Shaft calculation the software allows the calculation of deformation of several coaxial shafts in combination with nonlinear bearing stiffness of rolling bearings.
Involute gear design equations and calculator engineers edge. Standard spline shafts cold rolled in the us since 1951. Sep 20, 2016 albero scanalato ad evolvente intext 24z 2m 30p iso4156 involute spline shaft splined rotary shafts. Depending on the class of fit, a spline is able to accommodate axial. One revolution of the part is obvious as the cycle repeats again after 45 peaks. For our calculation example the splined shaft is su ciently dimensioned. After an introduction to the handling of the software and its user interface, the training focuses on sizing and optimization of shafts and their supports using the calculation modules in kisssoft and learning about the underlying theory of the calculation procedures. Inside splines gear solutions magazine your resource to. Spline calculations in metric units inventor autodesk. The spline shaft is 44% thicker there are 47% more teeth between the spline shaft and hub there is 23% more vertical spline engagement the force carried per tooth has been reduced by 54% the new spline shaft is a one piece design vs. Inventor shafts and splines augi the worlds largest cad. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. The solved model of spline shaft is shown in figure 5.
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