See Figure 1. When you select a program, text appears in the right-hand window describing in detail what the program does. Sooner or later, you may end up learning the number coding of the programs. The opening screen also has a window for bringing in data from already-completed work. This name is then added to the list.
The data input forms range from simple to very complex, depending on which program is used—the latter being complex because they have to be, as experienced gear people know. The wizard form steps you from one input field to another: you enter the inputs you want and IGS then solves it, notifying you that it has done so.
It will also notify you of any appropriate cautions and warnings, with the goal of guiding you through the design process. See Figure 2. Again, you enter the inputs you wish and solve, then read the output values directly on the form. See Figure 3. Some forms have additional tabs for configuring plots, filling in data tables, and, depending on the program, other specific calculations. Many programs have standard report formats, and all programs allow custom reports, with inputs, outputs, and plots that you choose, plus headers and footers, and even a logo.
Available plots include teeth in mesh, hob geometry, life data, and stress data shown below. IGS also supports comparative reports that pull in data from two or more saved runs. See Figure 4 and Figure 5. If all of this sounds complicated, it is, but not unnecessarily so. The architecture of IGS is logical and comprehensible enough, and certainly reflects the real world of project management.
But there was a downside, Marsch adds. The new software preserves the modularity, but all the data is kept in one database and can be brought into any program. The enhanced reports are a great time-saver, and the comparative reports are a much, much bigger time-saver. Marsch says he uses the wizard only for initial data entry. For designing gears, he prefers the power-user form. Tom Pijaca, technical manager of Smiths Aerospace in Whippany, New Jersey, says that his company particularly likes the visual plots of the UTS software — and the fact that there are programs for designing worm gears.
If they do make a mistake, or want to modify some input value, the interface makes it very easy to retrace their steps, change the desired value, update the output, and see how the change affected the final gear set.
Blalock also predicts IGS will fill an important need for companies in an era of greater employee mobility. It's not hard to write a single computer program that does basic gear design calculations, but how can you avoid the more complex and sophisticated calculations and still get the most out of a design? The short answer is the accurate answer—You can't! Our experts will help you select the Programs that are right for you—no more. UTS customers have found that with the help of our software and services, they can:.
Solve design and manufacturing problems quickly and easily. Once and for all, get rid of most gear related problems! How to get more information. After you go through this product profile, we suggest some or all of the following steps:. Fill out the requirements worksheet on line or fax a hard copy to UTS. View online demos Talk to our Application Engineers on the phone to go over your needs. Have UTS make some sample runs for you at no charge. Request a Net-Meeting demo this is a live demo you can see over the Web Visit UTS for a demo and detailed technical discussion about your specific gear problems.
The statistical effect of the scatter in the actual errors is accounted for by calculating the root-mean-square index error. This program calculates the synchronic index of an in-line geared transmission system. The synchronic index of a geared system is the minimum number of full turns made by the driver to bring the system back to the initial alignment of the gear teeth.
After this number of turns, all gears will be back to their initial angular alignment with respect to each other and the gear housing. This program calculates the coordinates of the intersections of two circles. Its primary use is to locate the centers for idler gears.
This is a model of a gear meshed with three other gears. Gear parameters such as number of teeth, contact ratios, approach-recess action, non-standard addendum, and center locations are calculated. Once a target gear ratio has been determined and the load is known, the next step in the design process is to obtain the geometry for a preliminary gear set. This gear set is then checked with more detailed design equations to determine suitability for the loads and speeds involved along with a duty cycle if applicable.
This program is structured to produce a preliminary gear set from the data usually at hand when the ratio, load, and speed of a single gear set has been determined. This program calculates the polar coordinates of an involute in terms of the diameter, roll angle, pressure angle, and base diameter. The Cartesian coordinates are also given.
The area, moment of inertia, and centroid of the involute sector is calculated. All values may be input or output data. This program will provide an accurate plot of the final form of external involute spur and helical gears in mesh at any position on the line of action. This program provides an accurate plot of the tooth form produced by hobbing or shaping and post processing from the production gear drawing and the tool drawing.
In the case of molded gears plastic or powdered metal circular arc fillets, chamfers and tip relief may be specified. A set of coordinates for the mold with shrinkage allowance is available. For form ground gears, the coordinates of the grinding wheel form are produced. This program will plot the transverse plane projection of the positions of the cutting edges of a hob. The transverse plane is the plane of rotation of the gear. It may be used to evaluate the suitability of a hob for the production of a gear.
Non-topping, semi-topping, topping, or tip relief hobs may be used. If a roughing hob is used prior to a semi-finishing or finishing hob, the program will provide a plot of both profile patterns. This program will provide an accurate plot of the final form of external involute spur and helical gears in mesh with an internal gear at any position on the line of action. This program provides an accurate plot of the tooth form produced by shaping and post processing from the production gear drawing and the tool drawing.
In the case of molded gears plastic or powdered metal , circular arc fillets, chamfers, and tip relief may be specified.
Spur on center face gear sets consist of a spur pinion meshing with a gear formed on the side of a disc. The axes are at 90 degrees and intersect. The pinion may be produced by any means used to make spur involute pinions.
These include hobbing, shaping, extruding and molding. The face gear must be generated by a shaper cutter with the same normal diametral pitch and pressure angle as the pinion. This standard provides a method by which different gear designs can be compared. Most of the inputs for this program can be transferred automatically from Program Calculations in this application conform to the ISSO The methods are summarized below: Factors of influence are derived and applied in accordance with ISO , Method B.
Calculation of surface durability pitting conforms to ISO Strength and quality of materials conform to ISO This model covers the design of cylindrical worms and throated gears mounted with axes at a 90 degree angle.
The model will give solutions for gear sets whether they comply with the standard or not. This program covers the design and rating of cylindrical worm gear speed reducers of the following types: 1. Single Reduction 2. Double Reduction with cylindrical worm gearing for each reduction 3. Double Reduction with helical gear first reduction and cylindrical worm gear final reduction Read More. This program covers the design of double enveloping worms and worm gears mounted with axes at a 90 degree angle.
This program covers the rating of double-enveloping worm gear speed reducers of the following types: 1. Multiple Reduction with double enveloping worm gearing for each reduction 3. Multiple Reduction with spur or helical gear reductions combined with double enveloping worm gearing Read More. This program has been prepared to help you with the design of new worm drives or to analyze existing worm sets. The program has been configured to help you design a worm drive and design the cutting tools required at the same time.
If you wish to start with a worm gear hob, the program will allow you to do this quickly and efficiently. In addition, data on the probability of scoring using other than the two oils covered by the standard has been included.
The purpose of this model is to provide an accurate set of coordinates for use in plotting the final form of external involute spur and helical plastic gears.
In addition to a plot of the teeth, the model furnishes numerical results for many of the design parameters of interest to the designer. The model can be used for the design of a plastic gear set and the necessary tooling and, if load and material data is entered, an analysis of the load capacity will be made. This is the standard for inch series splines based on a stub diametral pitch design.
It is possible to use the model to convert the dimensions to metric but the basic calculations are always based on diametral pitch and the inch system. The model will automatically calculate data for splines and gauges in accordance with the standard. If data is entered for a modified spline the model will indicate that the spline is not standard and will then calculate data for measurements and gauges for the modified spline.
This is the standard for metric series splines based on metric modules and a series of basic generating racks. It is possible to use the model to convert the dimensions to inches but the basic calculations are always based on the metric module and the basic rack system from the standard.
Fixed, flexible straight and flexible crowned splines are included. A plot of the splined parts in assembly is provided for a visual check of the geometry in addition to numerical data.
This is a model of the contact conditions between an external involute shaper cutter and an internal gear.
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