Tool Making - How to Choose the Correct Ejector Pin?

HOW TO SELECT EJECTOR PIN:-

   There are many different kinds of ejector pins in the market nowadays and it is a challenge for users to select the correct ones. In most cases, selecting an inappropriate ejector pin is wasting resources andcreates inefficiency in production.

Many of us understand the importance of material and related hardness when selecting an ejector pin. However, in this article, we will focus on another important factor and that will be the working temperature.

Working Temperature

Working temperature is crucial because it affects the lifetime or durability of an ejector pin. For example, if the working temperature is high and the ejector pin being used is made for a low working temperature environment, then the ejector pins will certainly not last long.

In the market, there are three common types of ejector pins: (1) through hard pins, (2) nitride H13 pins and (3) the newly developed black ejector pins. All of these pins are excellent to use; however, each has its own characteristics and is designed to be used in a specific environment.

Through Hard Pins
                                      The design of the through hard pins involves the same hardness throughout the diameter of the ejector pin. With this characteristic, the ejector pin can last much longer in working temperatures below 200oC. It is mainly suitable for plastic injection molds.

Nitride H13 Pins
                                 If the working temperature goes beyond 200oC, then nitride H13 pins will be a much better fit. The reason is that the surface of these pin has a hardness of HRC 65 to 70, which can lead to a much better life expectancy in high working temperatures. These pins are best for die casting.

Black Ejector Pins
                                    Nitride H13 pins are not suitable for working temperatures that exceed 600oC, so black ejector pins were developed as an option. These pins have a special black surface coating treatment on the entire pin that can sustain working temperatures up to 1,000oC. Also, the special black surface treatment provides additional self lubrication to the ejector pin, making it an excellent fit for automobile injection molding. These pins are suitable for most working temperatures, but the cost of such a pin is higher. 

Summary

                          From the above comparison, it is evident that different types of ejector pins are suitable for different environments, which is why working temperature is a necessary factor to consider before your final selection. This will also apply to ejector sleeve and ejector blade selection.

Product Design - Stunning Product Designs of BIKES-PART-1

Luxury Tricycle “Enzo Trike ” from Kid Kustoms

Company Kid Kustoms aims to make a tricycle, rather a children’s tricycle, a source of pride, both the child and his parents. This tricycle called “Enzo Trike” comes with a huge list of accessories including a deep aluminum tub fixed to a single axle and custom billet disk wheels, or the matching 52 spoke wheels. Crafted from the finest material available and certain to become a family heirloom, the trike features interchangeable fenders with functioning brake lights, custom pedals, headlights, exhaust tips and grips to make sure no two trikes are alike. The special shape of the wings and frames, headlight, and other design decisions, force these tricycle to look very special. You’ll be able to make your child happy for $950.

Honda’s “Motor Compo”

On exhibition at Tokyo Motor Show 2011 Honda represent “Motor Compo”, a foldable electric scooter, which design hearkens back to the 1980′s “Motocompo”. The Motor Compo’s total length and height are under 1 meter (39”), which makes it super compact. It also features a removable battery specifically designed to be used as an emergency power source in case of disaster.”Looking at the “Motor Compo” now, it’s as if we combined the memories of both the city [line of honda cars] and the [1980's original] motocompo to create an image to represent this new generation.” Take a look!

Futuristic Bike “Detonator” by Daniel Simon

The Cosmic Motors Detonator is an unique concept created by German automotive futurist Daniel Simon for his futuristic vehicle design company, “Cosmic Motors”. Simon calls this futuristic bike a “street cruiser bike built for humanoid droids.” Simon obtained his degree in vehicle design in 2001 at the University of Applied Science in Pforzheim, Germany. After completion, Simon went to Barcelona and designed concept cars for Bugatti and Lamborghini, followed by five years at the VW Group’s Advanced Studio where he is currently designing virtual vehicles for his brand Cosmic Motors. He has published a book, “Comic Motors” and continues to offer his services to premium carmakers while designing his own concepts.

Hybrid Bike Concept “INgSOC”

Today we want to show you very interesting bike concept INgSOC by designers Edward Kim and Benny Cemoli. Unusual combination of aerodynamic shapes of triathlon designs, flexible handling of traditional bikes and advanced hybrid power technology turns ordinary bike into vehicle from fantastic movies. “The frame is constructed from carbon fiber reinforced polymer (CFRP) for its high strength yield to weight ratio. Adaptability comes from mono-direction reinforcing of the frame, directing stiffness by orienting carbon fiber strains along a projected trajectory. The battery which powers the motor, integrated front and rear lights, as well as a charging dock for communication devices, entertainment, or navigation is directly charged from the rider’s own energy output to maximize efficiency.”

Electric Motorcycle “Orphiro”

Orphiro is not just an electric bike, it’s efficient, quiet and an all around a great option for sustainable mobility. This battery-powered cruiser made in the Netherlands. Company founder Alexander Steegh says the slick streamlined exterior covers five lithium-ion batteries putting out 72 volts. Top speed is 75 mph, and recharging the batteries takes six and a half hours. “Sustainable fun, a cool design and comfortable driving. Orphiro combines all ideals when it comes to new motorcycling: fully electric, fast loading and one with nature.”

Voltitude Folding Urban Electric Bike

This compact electric vehicle called Voltitude was presented at the Geneva Motor Show. Red color and cross on the body resemble folding swiss knife. Folded bicycle-scooter has a minimum size. "Even though its size and wheelbase is absolutely comparable to a normal bicycle, the Voltitude bike can be folded in a very small space such as a locker, cupboard or car boot. Basically two Voltitude bikes can be stored in a space similar to a European washing machine."

Kanyakumari - Beauty of Kanyakumari + PHOTO's ONLY (PART-1)

FOR MORE DETAILS ABOUT KANYAKUMARI TOURIST PLACES and TOUR EXPERIENCE
VISIT THE BEAUTIFUL full fledged Kanyakumari website which is shown below:- Clicking that link take you to that Beautiful page :-
                                                http://heartin-kanyakumari.blogspot.in

   
In the Above website you get the details of 
1.) Train , Bus , Flight timings to reach kanyakumari
2.) Beautiful photos with details of all tourist places.
3.) Route map of all tourist places in there
4.) Personal Journey Experience Review of all tourist places.
5.) Videos of that particular tour place.

MAP WITH DIFFERENT COLOUR CODE IDENTIFICATION

MAP WITH PHOTOS WHICH THE PLACE IS FAMOUS FOR...

MAP WITH TRAIN, ROAD , RIVER and ALL HIGHWAY DETAIL

MAP WITH EACH VILLAGE AND ALL MAJOR PLACES of DISTRICT

What 's in KANYAKUMARI - A short GLANCE... 

C - KANYAKUMARI... 

AT AFTERNOON IN KANYAKUMARI FROM HELICOPTER   

AT EVENING IN KANYAKUMARI 

AT  NIGHT IN KANYAKUMARI

    CLOSE-UP SHOT OF VALLUVAR

                                                             ON ROAD SIDE...

                                   ON THE ENTRANCE TO KANYAKUMARI FROM CHENNAI...

ON ROAD SIDE...

    

                                                       a SHOT FROM SMALL HILL..

a SHOT OF MATHUR  BRIDGE & SURROUNDING SCENERY

                            

                           a SHOT OF HILLOCK JAIN TEMPLE & SURROUNDING SCENERY

   

                     a SHOT OF TIRPARAPPU WATERFALLS & SURROUNDING SCENERY 

                                    a SHOT ON THE SIDE OF A RIVER IN KK... 

                                  a SHOT OF SEA SHORE's IN KANYAKUMARI

a SHOT OF RUBBER ESTATE IN HILL AREA

a SHOT OF KALIKESAM FOREST

a SHOT NEAR  BHOOTHAPANDY SHIVA TEMPLE

This are some of the PHOTO's from kanyakumari District. Remaining PHOTO's YOU CAN VIEW in NEXT POST - PART-2 

FOR MORE DETAILS ABOUT KANYAKUMARI TOURIST PLACES and TOUR EXPERIENCE
VISIT THE BEAUTIFUL full fledged Kanyakumari website which is shown below:- Clicking that link take you to that Beautiful page :-
                                                http://heartin-kanyakumari.blogspot.in

   

Tool Making - Six Points You Must Want to Know about High-Feed Milling...

                                          A look at why the benefits of high-feed milling can significantly outweigh the potential challenges.High-feed milling focuses on removing as much material as possible in the shortest amount of time. It’s a process that’s been around for a while and can open doors to more lucrative business opportunities. Unfortunately, some manufacturers have moved away from the process due to what they consider reliability concerns. And it’s true, if not applied properly, high-feed milling can create some unfavorable results.

                                           For those willing to take the leap, the benefits of high-feed milling can significantly outweigh the potential challenges. The process offers amazing productivity, nearly triple the metal removal rate of conventional methods, and increases tool life. However, there are several things you must know in order to make high-feed milling successfully work for you.

1.    Machine Tools
                                    Rigid, highly capable machine tools are a must because the cutters run at high feeds, which require the machine and the control to keep up with these demands. New equipment is a lot more advantageous when dealing with high-feed milling technology. It’s possible to apply new high-feed mills on older machines, but the process works best with large cutters because the feeds and speeds are not as accelerated.

2.    Inserts
                     Trigon-style inserts provide the lowest possible lead angle over round or square inserts. Low lead angles produce a much thinner chip, which in turn, requires higher feedrates to maintain proper chip thickness for the insert geometry. The lower lead angle also directs the cutting forces in the axial direction, pushing up into the spindle, which is more stable and easier on the machine. Higher lead angles create thicker chips requiring less adjustment in feedrate. They also produce more radial force causing vibration and stress on the spindle bearings.

High-feed cutters that use trigon-style inserts, providing the lowest possible lead angle over round or square inserts to direct cutting forces in the axial direction, which is more stable and easier on the machine

3.    Insert Grade
                              Make sure you have the right insert grade for your job because you don’t want your tool to fail prematurely, especially if you’re performing a lights-out operation. Choosing the correct insert grade for the type of material you are machining can increase tool predictability, resulting in fewer tool changes, less rejects and less reworking. 

4.    Machining Application
                                                   Not every machining method is created equal. While high-feed mills with long overhangs are great, for high-speed options for milling processes, you need to remember you can’t run them as fast as you would tools with shorter overhangs without adding specialized vibration dampening toolholders or reducing cutting speed. When a tool with long overhang operates faster than it should, you can experience increased vibrations, causing insert chipping and premature insert failure.   

 High-feed mills well suited for plunge milling because they are free cutting and provide efficient chip evacuation.

5.    Programming
                                   Optimize the cutter path through proper programming, so you don’t put any unrealistic demands on the cutting tool. For example, when you are in a mold and come to a corner, changing directions without using a smooth transition is very hard on a tool because it creates a large angle of engagement. A good rule of thumb is to program an arc that is 50 percent larger than the cutter diameter. If using a 2.0” cutter, program a 3” diameter arc.  Programming an arc in pocket corners reduces the angle of engagement and avoids overloading the cutter. Machine tools can also have problems in this area because several calculations are involved in generating an arc. If the machine tool can’t properly calculate the arc, the toolpath can become erratic.

Where drilling would draw too much power on low-power machines, this high-feed mill offers the option of instead creating holes by helical ramping.

6.    Engaged Tools
                                      Keep your high-feed mills as engaged as possible across the full diameter or less than half the insert width. One of the reasons these mills work so well is because their cutting forces are directed at the machine spindle in the axial direction to create balance. If you use the same cutter and only engage it 50 or 60 percent of the diameter, you will experience push and increased vibrations because the cut is unbalanced.