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Monday, May 14, 2012
Times Of Prayers - Hadith Application ; Android, iPhone, Blackberry, Windows Phone , Mobile
Smart Phone Application: The guide for the topic of Times Of Prayers. Sayings of Holy Prophet on Times Of Salat. Hadith Navigation by Narrators With References HD Quality Facebook Share This application is available for Android, Kindle Fire, iOS, iPhone, iPad, iPod Touch, BlackBerry, Windows Mobile, Windows Phone Amazon: www.amazon.com www.amazon.com Website: www.appxone.com Download anytime from any language and country
Tags: Android (operating System), blackberry (Operating System), Hadith (Religious Text), iphone (Computer), Windows, Mobile, Cell
2 Tips to Create Great Mobile User Experiences
Experienced mobile Applications developers realize the importance of bringing to their mobile app users a great user experience. The fact that a particular mobile app meets specific client concepts is all well and good, but if it doesn't offer a satisfactory user experience then it is destined to fail, no matter what the quality of its mobile website design and functionality.
For this to happen, developers make use of different techniques and implement an array of tips to ensure high performance mobile user experiences.
Create An Iphone App
Let's take a look at some of the tips that are used:
Identifying Elements Can Most Enhance the Brand's Identity
Think of mobile apps whether they are iPhone Applications or apps built on some other mobile OS as a means of telling a story - a story of the brand. User interaction with the app should facilitate brand recognition and promote its credibility. This is only possible, if a developer is able to identify those key elements that absolutely must be a part of the app because they make a contribution towards building the brand identity. These elements could be anything right from features to animations and from visuals to text. Identifying and making them a part of the app will definitely improve user experiences.
Focusing on Offering Solutions
Some developers get so carried away with their own expertise, as well as, the demands of the client that when the mobile app is finally developed, it is difficult to use. Although, it does align with the needs and requirements of the client, it doesn't offer a great user experience because it fails to offer a solution that is user centric. Take for e.g. an app whose main purpose is to facilitate shopping. So product search, products details and purchasing must be the key features of this app. But if it is packed with other features that don't play an important role in the shopping process, it's just going to make finding and purchasing a product all that more time consuming, if not difficult. On the other hand, if the developers only offer the 3 key features, it's going to improve the experience of using the app.
These are just two of many tips that mobile app developers use to offer highly workable and powerful user experiences. Its only apps that are high on the usability quotient that will work with the users as such apps are easy to understand and their use can be optimized by them. Nobody likes to put in the time to understand the functioning of a particular app. This is why the focus is always on usability.
2 Tips to Create Great Mobile User ExperiencesHow to Make a Baby Burp Cloth & Bias Tape Maker Giveaway!
In this week's video I show you how to make a simple baby burp cloth. You will also learn to finish the burp cloth edges with your own custom single fold bias tape. To make the single fold bias tape I use Simplicity's Bias Tape Maker. It does all the work for me and it's super fast! Simplicity has been kind enough to provide me with a Bias Tape Maker to host a giveaway this week for one of my lucky viewers! One lucky winner will receive: One Simplicity Bias Tape Maker machine One 1 1/4" Quilt Binding Tip (for use with machine) One 1/4" Single Fold Tip (for use with machine) One Bias Tip Insertion Tool (for use with 1/8" and 1/4" bias strips) Watch the video to learn how you can enter to win. Giveaway will close on Sunday, August 21, 2011 at 5:00pm (EST) One random winner will be selected from all qualifying entries and will be announced in next week's video tutorial. You can purchase your own Simplicity Bias Tape Maker here: www.simplicity.com I hope you'll consider making this project yourself. If you do please share pictures of your completed projects on our Facebook page: www.facebook.com Check me out at: Crafty Gemini mobile app: available for FREE in Android market and iPhone App store Website/Blog: www.craftygemini.com Facebook www.facebook.com Twitter: www.twitter.com Online Shop: www.craftygemini.bigcartel.com Voicemail for tutorial suggestions 73-CRAFTY-73 / (732)723-8973
Keywords: simplicity, bias, tape, binding, burp, cloth, baby, child, gift, easy, beginner, diy, making, howto, craftygemini, crafty gemini, simple, bias tape maker, machine, 1/4, single fold, double fold, giveaway
Unemployed in Iowa? Three Options to Help You Through the Tough Times
Starting your own business
According to the Facts About Unemployment Guide 2010-2011 by the Iowa Workforce Center, you can earn up to 25% of your weekly benefit amount in a part-time job and your benefit will not be reduced. Any earnings over that amount will result in a dollar for dollar reduction in your benefit. Let's say that your weekly benefit amount is 0. You could earn 0 x 25%, or .00 without having any deduction from your unemployment benefit. If you earned 0, your benefit would be reduced by to 0. However, if you have self employment income, it is not considered wages and you could earn an unlimited amount of money with no reduction in your benefit. Even if you earned 00 in one week, you could still draw your full unemployment benefit as long as you met the established requirements.
Application Development
You must remain able and available to accept suitable work and continue to comply with job search requirements. If you don't meet these requirements, you will forfeit your unemployment benefit. However, if you've dreamed of starting your own business and just never had the time, this might be a good time to give it a try. If you turn a profit, you will have a little extra money to help you through this difficult time and taking the time to pursue your dreams may give your confidence a badly needed lift if you've been unemployed for a while. It's also possible that you will make new connections that will help you in your job search. The guide does indicate that you should ask for more information, so check with your local workforce office if you're considering this option.
Go back to school
If you'd like to go back to school for additional training, complete an Application for Department Approved Training. If you enter an approved training program, your job search requirements will be waived. If you stop training for any reason, you must notify Iowa Workforce Development and comply with work search requirements immediately.
You can also apply for Training Extension Benefits. These benefits provide an additional 26 weeks of benefits for people who qualify for unemployment benefits and were laid off or voluntarily separated from employment due to a permanent reduction of operations. There are three types of eligible training:
Working towards a GED in an approved program, Training for an occupation that is considered High Occupational Demand by Iowa Workforce Development, and Training for a high tech occupations
Work part-time to extend your eligibility
A part-time job can provide a little (up to 25% of your weekly benefit amount) extra income. Any earning over 25% of your weekly benefit will be deducted from your benefit. However, working part-time will allow you to draw benefits longer if you are unable to find work quickly. Remember all earnings must be reported the week that they are earned, not when they are paid. You must report employment earnings even if they don't exceed 25% of your weekly benefit. You must continue your job search and remain able and available for suitable work while you are working part-time.
Unemployed in Iowa? Three Options to Help You Through the Tough TimesModern Threading Technology
(with acknowledgment to Mike Kanagowski, General Manager, VNE Corp, Wi, a sister company of Vargus who contributed some of the material)
Introduction
Application Development
If we are honest with ourselves, manufacturing engineers looking for increased productivity, spend a lot of time looking for optimizing tool set ups, choosing correct cutting tool grades for a given workpiece and finding the maximum feed and speed conditions in turning and milling Applications. They do not necessarily spend the same of time in optimizing threading operations since there is still an aura of "black box" attitudes concerning this operation.
Threading technology today has advanced in parallel with turning and milling improvements as far as tool grades and coatings, however advance in the design of inserts for threading chip control and the rapid strides in thread milling technology, give the manufacturing engineers a much wider choice for optimizing productivity.
Thread Turning
There are over 40 types of internationally accepted thread standards, some rarely used others much more popular. In addition, many countries have established variations on the international standards for their specific manufacturing requirements.
Primarily the threads are used in four categories:-
Fasting: nuts and bolts
Containing: lids of jars, gas caps, etc
Connecting: fittings and pipe couplings
Actuating: lead screws to transfer power and motion.
The ISO and UN standards are widely used in all industries, the other popular standards have more specific Applications: -
BSW Gas and water fittings
NPT- Pipe fittings
BSPT- Gas and water fittings
ACME- Moving parts
Metric buttress- Moving parts in machine tool construction
Trapeze- Moving parts
Round - Tube fittings for food and chemical industries
UNJ & MJ- Aircraft industries
API- Oil industry
A little over half of the thread forms are based on what we will call the 60º Vee geometry and only differ in such factors as the size of the tolerances and root and crest radii.
Threading versus Turning
Threading operations are much more demanding than straight forward turning operations. Cutting forces are in general higher in threading and the cutting nose radius of the insert smaller and thus weaker.
Comparing the feed rate for turning and threading, we see that in threading, the feed rate must correspond exactly to the pitch of the thread. In the case of an 8 TPI thread, the tool must travel at a feed rate of 0.125 inch/revolution. The nose radius of the threading insert is typically 0.015 ". In the case of turning, the normal feed rate is 0.012 inch/ revolution with a standard radius of 0.032 ". From this example we see that threading feed rates are typically 10 times greater than turning. Correspondingly, the cutting forces at the tip of the threading insert can be anywhere from 100 to 1000 times greater than those for straight turning operations. Thus the nose radius of a threading insert plays a vital role in threading and its dimension is strictly limited by the allowable radius at the root of the thread form as defined in the relevant standard. Unlike turning where the material can be sheared, if, in the case of threading, material is "pushed" then thread distortion will be occur.
Further, since the thread is formed by carrying out a number of passes over the length of the thread, the leadscrew of the cross slide is working excessively hard, stopping and starting, moving forwards and backwards and this factor alone results in a limitation in optimization potential.
Partial Profile versus Full Profile Inserts
Partial profile inserts, sometimes referred to as "non topping" inserts cut the thread groove without topping or cresting the thread. These inserts allow production of a wide range of threads, however the nose radius of the insert ( the most vulnerable part of the insert) must be small enough to produce the smallest pitch. The depth of thread is also affected by the small nose radius. For example for a 8 TPI thread, a partial profile insert requires a thread depth of 0.108" while the same thread with a full profile insert will be no deeper than the specified 0.81". Thus a stronger thread is produced with a full profile insert and further, up to four less passes in producing the thread.
Multi Tooth Inserts
Multi tooth inserts are designed with a number of teeth so that each one cuts deeper into the thread groove than the previous tooth. Thus the number of passes required to produce a thread can be reduced by up to 80%. The tool life of these inserts is considerably longer than single point inserts since the final tooth is only machining a half or a third of the metal removal of a given thread.
These inserts obviously can give a big push to improve productivity, however, due to the higher cutting forces they are not recommended for thin walled parts as chatter can result. The design of the workpiece should have a sufficient amount of thread relief or run out to allow all the teeth to exit the cut.
Infeed Per Pass
The depth of cut or infeed per pass is critical in threading because each successive pass engages a larger portion of the cutting edge than the preceding pass. If a constant infeed per pass is defined, forces and metal removal rates increase dramatically on each pass.
Producing a 60º thread form using a constant 0.010" infeed per pass will result in the second pass removing three times the amount of metal as the first pass. For each succeeding pass the amount of metal removed grows exponentially. Thus the pressure on the nose radius increases accordingly. The depth of cut should reduced on each pass in order to achieve more realistic cutting forces.
Infeed Methods
a) Radial - not recommended for general use
Whilst, controversially, this method is probably the most common method of producing threads, it is the least recommended. Since the tool is fed radially (perpendicularly to the workpiece centerline) metal is removed from both sides of the thread flanks, giving a V shaped chip. This form of chip is difficult to break this chip flow can be a problem. Further, since both sides of the insert nose are subject to high heat and pressure, tool life will generally be shorter than other infeed methods.
b) Flank Infeed - generally not recommended
In this method of infeed, the chip formed is similar to that produced in conventional turning and is easier to form and guide away from the cutting edge, providing better heat dissipation. With this infeed however, the direction of infeed is parallel to one of the thread flanks (30º ) and the trailing edge of the insert does not cut only rubs along the flank causing burnishing of the thread resulting in poor surface finish and maybe,chatter.
c) Modified Flank Infeed - highly recommended
This method is similar to the flank infeed except that the infeed angle is somewhat less than the 30º. This gives the advantages of the flank infeed method while eliminating the problems of the training edge of the insert. A 29½º infeed angle will normally produce the best results but in practice an infeed angle of between 25º and 29½º are generally acceptable.
d) Alternating Flank Infeed - not recommended
This method utilizes both flanks of the insert to form the thread and gives longer tool life since both sides of the insert nose are used. In reality, this method can result in chip flow problems, which can affect surface finish and tool life. This method is usually used for very large pitches and such forms as ACME, TRAPEZE etc.
Clearance Angle Compensation
The ability to precisely tilt the insert in the direction of cut by changing the helix angle is probably one of the most powerful features of the laydown system.
This feature gives a higher quality thread because the insert will not rub against the flank of then thread form and also give a longer tool life since the cutting forces are evenly distributed over the full length of the cutting edge.
In the diagram above, the cutting edge of the insert on the left is parallel to the centerline of the workpiece. Note that the clearance angles under the leading edge and the trailing edge of the insert are not equal. In the case of many thread forms, particularly coarser pitches, this inequality can cause the flank to rub against the side of then insert.
With the laydown anvil system, (a helix angle chart appears in most catalogs allowing ease of choice of the correct shim to be used for the Application under consideration) the proper anvil will tilt the cutting edge of the insert (in the direction of feed) in a plane perpendicular to the helix angle of the thread. The clearance angles beneath the insert's leading and trailing edges will be equivalent. This ensures that the insert will rub on the thread flanks and edge wear will develop uniformly.
Thread Tolerances
Most manufacturers specify the thread tolerance for which their inserts will be suitable and it is important for the manufacturing engineers to take note of this.
Although inserts can be produced which are suitable for other tolerance defined threads, it usually necessary to contact a manufacturer to have these tools manufactured by special order.
Miniaturization
The success of the laydown system has resulted in manufacturers looking for similar Applications in smaller and smaller bore diameters.
The laydown system typically will allow threads to be formed in bores down to ½" diameter. For smaller diameters down to approximately 0.3" diameter, interchangeable inserts with 2 or 3 edges are available
Mini threading laydown inserts offer many advantages over traditional machining of small bores. The quality of the thread formed is usually higher, the insert design allows chips to flow out of the bore with little damage to the thread and being indexable the tooling investment for machining a considerably lower.
This tooling is usually available in a range of carbides and coatings giving the manufacturing engineer the flexibility to chose an optimum set of conditions.
The carbide used in these applications permit machining at lower surface speeds than is normally associated with threading. This is more the result of machine tool limitations than the capability of the tooling.
For bores even smaller than 0.3" the micro range of tooling offers a complete package of machining in addition to threading. This includes turning, copying, chamfering and both radial and axial grooving.
Those Special Needs
In spite of the large range of tooling available for seemingly unending applications, there is always that "special" problem for which standard tooling does not provide the answer.
In one of these cases, a manufacturer had a problem producing tens of thousands of brass fittings using a Schutte 6 spindle machine. There were two threads to be formed on the component and the previous method of manufacture produced each thread one at a time. Thus a more efficient method was required and the company turned to its tooling supplier.
The supplier came up with an innovative solution - using two thread milling inserts on a special holder enabling the machining of both threads at the same time. The inserts were used in the style of multi tooth thread turning inserts. The customer successfully threaded over 70,000 components without changing the inserts!! As well as saving inventory costs over the previous method, a considerable productivity saving was also achieved.
This is just one example of thousands of special applications that are solved year on year. If
Your application is not solved with standard tooling, don't hesitate to contact your tooling supplier, you will be surprised at his innovative solutions!!
Thread Milling
The principle of the screw was invented in the third century BC by Archimedes. Industrial production of screw threads began after 1850 utilizing lathe technology. Over a hundred years later in the late 20th century, threading production by milling was developed.
Without screws the Industrial Revolution would not have taken place. Without thread milling technology, efficient means of production would have been just a dream.
The advent of 3-axis CNC milling machines with helical interpolation opened the door to thread milling technology. Helical interpolation is the simultaneous movement of the tool in the chuck in the "X", "Y" and in the "Z" axis perpendicular the "X" and "Y" plane.
Thread milling is a system based on indexable multi tooth inserts. The cutter rotates on its own axis and at the same time moves along a helical path. The inserts are precision ground so that each tooth is within the specification of the thread form required and forms one pitch of the thread. At the end of a single revolution each tooth has completed the forming of one pitch which combine together to give the thread over the length of the insert.
Advantages
There are numerous practical advantages of this technique of forming threads, each giving cost savings and higher output levels.
- enables machining of large workpieces not mountable on a lathe
- non symmetrical parts easily machined
- all operations can be completed in a single clamping set up
- threading of large diameter threads require considerably less power than taps
- no upper limit to diameters, external or internal
- short chips for easy control
- blind holes do not require a thread relief groove
- a single toolholder can be used for both internal and external threads
- one insert can be used for both right hand and left hand threads
- major reduction in tool inventory costs as a small range of tooling covers a wide range of applications
- interchangeable inserts
- suitable for machining hard materials
- high quality surface finish
- the CNC program can be correct for diameter and length during production
-interrupted cuts machined without any special conditions
- one insert is suitable for a wide range of workpiece material
- short machining time due to high speeds and rapid feed rates
- low cutting forces allowing machining of components with thin walls
With such an outstanding list of advantages, it is quite clear why this technology is growing at such a rapid rate.
Infeed Methods
How does the thread milling cutter enter and exit the workpiece?
Tangential arc approach - the best method!
With this method, the tool enters and exits the workpiece smoothly. No marks are left on the workpiece and there is no vibration, even with harder materials.
Although it requires slightly more complex programming than the radial approach (see below), this is the method recommended for machining the highest quality threads.
1-2: rapid approach
2-3: tool entry along tangential arc, with simultaneous feed along z-axis
3-4: helical movement during one full orbit (360°)
4-5: tool exit along tangential arc, with continuing feed along z-axis
5-6: rapid return
Radial Approach
This is the simplest method. There are two characteristics worth noting about the radial approach:
· a small vertical mark may be left at the entry (and exit) point. This is of no significance to the thread itself.
· when using this method with very hard materials, the tool may have a tendency to vibrate as it approaches the full cutting depth.
Note: Radial feed during entry to the full profile depth should only be 1/3 of the subsequent circular feed !
1-2: radial entry
2-3: helical movement during one full orbit (360°)
3-4: radial exit
Coarse Pitch Threading
Coarse pitch threads are defined as a result of the combination of a small thread diameter and relatively large pitches. Since contrary to thread turning, the thread milling operation does not produce an exact copy of the profile of the insert. This fact can cause profile distortion particularly when machining internal threads.
The distortion can be caused as a result of one or more of the following parameters; thread diameter, tool diameter, pitch and profile angle. It is always necessary to refer to the manufacturers recommendations in this regard.
CNC Program Generator
In order to avoid programming errors, manufacturers provide software to make the job easier. Whilst one can learn the techniques, it is rather like the now defunct slide rule which was overtaken by the pocket calculators.
Summary.
The information in this article merely touches the surface of two of the more popular threading techniques. Coating technology, chip breaker designs, sintered inserts and sintered chip breakers all provide the opportunity for better production rates.
The Development of threading tooling will continue in the foreseeable future
By: Stuart Palmer, Marketing Consultant
Modern Threading TechnologyiPhone and iPod Touch Typing Tips
Typing on the iPhone's virtual keyboard can be a challenge for some people. But there are several tips and techniques that can make it easier.
If you find the keyboard too small, more Applications support a second, larger keyboard that will appear if you turn your iPhone on its side. The keys then become 50% larger and easier to find with your fingers.
Iphone Application
To type a capital letter, you would normally touch the shift key, which looks like an outline of an up arrow.
Then you would touch the letter you wish to type. But you can also touch the shift key, and then drag your finger without lifting it to the letter and release. This single touch, drag and release action will type the capital letter as well. You can use the same technique to type letters and symbols by touching the ".?123" key, dragging and releasing over the key you wish to enter.
If you mistype a word and want to quickly replace it, double-tap the word and it will appear inside a selection box with Cut and Copy buttons. Instead of tapping one of these buttons, simply start typing again and the word will disappear to be replaced with what you are typing.
To type letters with accent marks, touch and hold a key like the "e" and wait for two seconds. A list if additional keys will pop up from the initial key and let you select variations that include accent marks. You can also find other special characters this way, for instance a degree symbol with the zero key, and underscore with the dash key, alternate currency symbols with the dollar sign key, more quote symbols with the quote key, and more. Experiment to see what else is available as result vary according to the language settings of your iPhone.
Similarly, when you are typing in a URL and a special ".com" key appears, you can hold down the ".com" key to reveal ".org," ".edu," and ".net."
The iPhone includes an auto-correct feature that will correct slight misspellings, allowing you to type faster without getting every single letter perfect. But this auto-correct feature will also allow you to skip some characters like apostrophes in contractions. For instance, you can type "dont" and it will come out "don't."
Another shortcut is the double space. Tap the spacebar twice at the end of a sentence and you will get a period followed by a space.
You can customize how your keyboard works by going to your iPhone preferences, and looking in the General preferences, Keyboard settings. Here, you can turn off auto-correction, auto-capitalization, and the period shortcut. You can also choose what type of keyboard you are using. For instance, you can switch from English to UK English, or one of many other languages.
iPhone and iPod Touch Typing Tips