Monthly Archives: May 2017

Overview and Advantages of the Hydraulic Radial Drill

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Can you imagine the hassles of not being able to drill a hole through a work piece that is too large to fit in your drilling machine’s table? The limitations of your drilling machine may be inconvenient, but the radial arm drill press puts an end to this dilemma.

 

A hydraulic radial drill or radial arm press is a geared drill head that is mounted on an arm assembly that can be moved around to the extent of its arm reach. The most important components are the arm, column, and the drill head. The drill head of the radial drilling machine can be moved, adjusted in height, and rotated. Aside from its compact design, the radial drill press is capable of positioning its drill head to the work piece through this radial arm mechanism.

 

This is probably one of the reasons why more machinists prefer using this type of drilling machine. In fact, the radial drilling machine is considered the most versatile type of drill press. The tasks that a radial drilling machine can do include boring holes, countersinking, and grinding off small particles in masonry works.

 

Although some drill presses are floor mounted, the most common set-up of hydraulic radial drills are those that are mounted on work benches or tables. With this kind of set-up, it is easier to mount the drill and the work pieces. There is no need to reposition work pieces because the arm can extend as far as its length could allow. Moreover, it is easier to maneuver large work pieces with the radial arm drilling machine. Large work pieces can be mounted on the table by cranes as the arm can be swiveled out of the way.

 

Here are some of the major parts of the radial arm drilling machine:

 

Column – the part of the radial arm drill press which holds the radial arm which can be moved around according to its length.

 

Arm Raise – adjusts the vertical height of the radial arm along the column.

 

On/Off Button – the switch that activates and deactivates the drill press.

 

Arm Clamp – secures the column and the arm in place.

 

Table – is the area where the work pieces are fed and worked on.

 

Base – the radial arm drill press part that supports the column and the table.

 

Spindle – the rotated part of the drill press which holds the drill chuck used in holding the cutting tool.

 

Drill Head – the part of the drill press that penetrates through the material or work piece and drill through the specific hole size.

 

Radial Arm – holds and supports the drill head assembly and can be moved around on the extent of its length.

 

There are a number of advantages of using the radial arm drill press. One of these advantages is the amount of area that it can cover which is only dependent on the length of the arm. Another advantage is the considerable size of work that it can handle since the arm can actually swivel out of the working area allowing cranes and derricks to place work pieces on the table. Finally, less effort is required during the drilling process because the arm assembly seemingly is doing all that is needed for specific tasks to be completed.

 

Top-One Machinery Co., Ltd. is a professional hydraulic radial drill manufacturer. The company provides high quality machinery for clients. If you are interested in learning further information about radial drill series, welcome to browse the website of Top-One or contact with them directly!

 

 

Article Source: http://www.brighthubengineering.com/manufacturing-technology/62030-radial-drilling-machine/

Growing Impact of Aluminum Die Casting Parts in Various Industries

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Die casting aluminum is mostly used in large manufacturing units. This process is very much acclaimed for its reliability and strength. Used in various industries they are cost effective in nature and immensely cater to the demand of users. Their advent can be seen more in aerospace industry where precision and quality is vital. Components made from casting aluminum are solid in nature and are resistant to harsh weather condition. Product crafted from aluminum is mostly used in aviation and commercial industries. Of immense potentiality these aluminum die casting products gel with other metals and offer flexibility by all means.

 

Aluminum die casting parts are comparatively better than plastic injection molded parts. Tag for quality, it bags excellence in all manufacturing endeavor. These aluminum parts are a natural shield for RF and EMI and prevent radio frequency. Stronger and stiffer casted aluminum parts are more stable dimensionally and are resistant to heat. With high degree of permanence these aluminum parts are with highest tolerance and finest finish. Ensuring more uniformity and dimension accuracy, aluminum die casting parts have drawn attention of the users. Its applicability in aircraft industry mark safety by all means. Light in weight and durable at high temperature these die casted products are of huge benefit to aviation industry which includes aircraft seats, components for the passenger cabin or baggage compartment etc.

 

This technology is marked for its high quality and utilitarian parts. Used in making electronic devices like cell phones and MP3 players, digital cameras and flat screen monitors and many others they also form an important part of construction industry. Aluminum casting is known for producing precision parts in high volume at low costs. While ensuring good surface finish they eliminate the need of post machining. Manufactured under strict supervision of experts, die casted aluminum parts ensure impeccability and comply with the international standard. Owing for superior attributes, these casted parts are commonly used in electrical, telecom, automobile and plastic industries. When it comes to strength and weight zinc casting parts offers best pact.

 

Aluminum die casting is used in number of industries because of its marked quality and excellent trait. Need of various industries this process lower cost and ensures productivity. As of you know how these aluminum die casting parts are useful, you can easily choose to avail them online. By browsing internet you can get handful suggestions and opt for the best that suits your need.

 

Champion H&C Inc. is an expert of Zinc, Aluminum, Magnesium Alloy tooling and mold design. We can provide superior quality aluminum die casting parts and various services to meet clients’ demands. If you need further information about our company, welcome to visit our website and send inquiry to Champion!

 

Article Source: http://EzineArticles.com/5856003

Thread Milling VS. Tapping

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There are some distinct differences between thread milling and tapping. This article explains the advantages and disadvantages of each so that you can make an educated decision about the strategy that will work best for your parts.

 

Tapping: Advantages and Disadvantages

The greatest advantage of tapping is speed. High-speed tapping centers set up with a rigid tap can thread holes in a fraction of the time it would take to thread mill the same holes. Additionally, tapping can thread deeper holes in harder materials such as steel.

 

A significant disadvantage of tapping is that a different size tap is required for each size hole that needs to be threaded. This can consume a large number of valuable, but limited positions in the tool magazine. Plus, having to switch tapping tools for all of the various size holes increases the cycle time.

 

Another disadvantage is that tapping does not allow for adjusting thread fit. Once the hole is tapped, the size and position of the thread is final. Also, rigid taps are used exclusively for interior threading of holes and cannot be used to mill threads onto the outside of a post or screw.

 

Finally, since the initial portion of a rigid tap is designed to plunge into material rather than making perfect threads, these tools are best for tapping through holes rather than blind tapping, which is threading holes that end within the material. In the case of blind tapping, the deepest threads in the hole are made with the part of the tool that is designed to plunge rather than thread. To complete these last areas as perfect threads, a secondary finishing tool is required and results in longer cycle times.

 

As general rule of thumb, it is best to employ tapping when you need to make a lot of holes with few variations in size.

 

Thread Milling: Advantages and Disadvantages

The primary advantage of thread milling is the ability to control the fit. A threaded hole is milled at a high RPM and the tool helixes into a previously-milled hole. So, the machine operator has the ability to adjust thread size using a strategy similar to using an end mill, rather than a drill bit to make a hole. This can be advantageous if there are tight tolerances on the thread sizes or if allowances need to be made for finishing such as painting.

 

Also, a single tool can be used in thread milling to make a wide range of hole sizes. This reduces both the cost of tooling and the amount of time associated with tool changes. Plus, a thread mill can create interior and exterior threads, right-hand and left-hand threads, as well as very large threaded holes (e.g. pipe threads). In the case of the latter, this eliminates the need to invest in a large rigid tap to thread big holes.

 

Furthermore, the thread mill gives the user the ability to design custom threads without having to invest in custom taps which can be very expensive and require long lead times. In the machining of very shallow blind threads in thin materials, the thread mill allows for maximum threads in a very short distance.

 

The one disadvantage of thread milling is you need to be equipped with a high-speed spindle in order to do it properly.

 

The Bottom Line

If you need more flexibility, have a range of thread sizes and types and require the ability to adjust thread fits, thread milling is the best choice. If speed is your requirement, then rigid tapping is what you need.

 

If you are still interested in learning more information about tapping and tapping centers, welcome to browse the website of Ares-Seiki. The company is the professional manufacturer of providing top quality advanced tapping center series and excellent after sales service. Feel free to contact with Ares-Seiki via email or telephone.

 

Article Source: http://www.datron.com/blog/thread-milling-vs-tapping/

What is a Scroll Chuck?

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A self-centering chuck, also known as a scroll chuck, uses dogs (usually called jaws), interconnected via a scroll gear (scroll plate), to hold onto a tool or workpiece. Because they most often have three jaws, the term three-jaw chuck without other qualification is understood by machinists to mean a self-centering three-jaw chuck. The term universal chuck also refers to this type. These chucks are best suited to grip circular or hexagonal cross-sections when very fast, reasonably accurate (±0.005 inch [0.125 mm] TIR) centering is desired.

 

Sometimes this type of scroll chuck has 4 or 6 jaws instead of 3. More jaws grip the workpiece more securely if it is truly cylindrical, and thin-walled work will deform less. Four jaws are also useful for square bar work.

 

There are also independent-jaw (non-self-centering) chucks with three jaws.

 

There are hybrid self-centering chucks that have adjustment screws that can be used to further improve the concentricity after the workpiece has been gripped by the scroll jaws. This feature is meant to combine the speed and ease of the scroll plate’s self-centering with the run-out eliminating controllability of an independent-jaw chuck. The most commonly used name for this type is a brand name, Set-Tru. To avoid undue genericization of that brand name, suggestions for a generic name have included “exact-adjust”.

 

Three-jaw chucks are often used on lathes and indexing heads.

 

Di Chun Iron Work Co., Ltd. is the professional manufacturer of producing scroll chuck and kinds of power chucks. If you are interested in learning further specification and what do them look like, welcome to browse our website and feel free to contact with Di Chun.

 

 

Article Source: https://en.wikipedia.org/wiki/Chuck_(engineering)

What are Metal Bond Grinding Wheels and What Benefits Do They Offer?

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Extensively used in manufacturing diamond grinding wheels, metal bonds are manufactured utilizing three different processes: cold press, semi hot press and hot press modes.

Metal Bond Grinding Wheel
Cold press mode involves pressing the transition layer (no diamonds) and the working layer (with diamonds) of selected diamond portions to forms that on the body of the grinding wheel. These segments are then allowed to interconnect with the grinding wheel’s body via slots or teeth. Finally, cold press grinding wheels are placed into sintering furnaces where they are sintered without press.

 

Semi hot press mode improves on the cold press mode by complementing the sintering process. While grinding wheels are sintering in a furnace, applicable molds are applied and minimal to moderate pressure is added. However, any pressure applied is significantly lower than the amount of pressure applied in hot press mode.

 

Hot press mode directly sinters diamond particles in molds under preset pressure levels in sintering press machines. Diamond segments are then affixed on the grinding wheel using high frequency laser welding, high frequency welding or mosaic methods of mechanical welding.

 

Metal bond grinding wheels are produced when powdered metals or compounds containing cubic boron nitride or diamond are sintered on the wheel, resulting in exceptionally strong tools that maintain shape during rigorous use. In addition, metal bonding extends the life of grinding wheels by reducing the need for repeated dressings and continues being productive longer than market-brand super abrasives.

 

Benefits of Using Metal Bond Grinding Wheels

  • Because metal bond grinding wheels are sintered with cobalt, copper, mill, silver or stanum power, they work exceptionally well on a variety of surfaces (glass, refractories, ceramics, silicon, semi-conductors and quartz).
  • Whether used for tool cutting, glass grinding, ceramic grinding or form cutting, metal bond grinding wheels provide the longest, most superior quality of service before any type of maintenance is needed.
  • Metal bond offers the ability to perform outstanding interrupted cuts while retaining the tool’s original dimensions even during the most energetic grinding actions, including centerless, cylindrical, creep feed, deburring and cutoff applications.
  • Although resin bonds are more commonly used than vitrified or electroplated bonds, these bonds do not offer the hardness or wheel retention properties exhibited by metal bond grinding wheel.

 

As one of the most frequently seen machines in manufacturing plants requiring grinding applications, centerless grinders especially benefit from metal bond grinding wheels because of the slow, precise pace of material removal method demanded of these machines. Additionally, super abrasive centerless grinders necessitate powerful wheels such as metal bond grinding wheels that can effectively make predetermined alterations to products while reducing quality control issues that may arise if lesser quality wheels are used.

 

Best Diamond Industrial Co., Ltd. is the professional manufacturer of metal bond grinding wheel & CBN wheels. If you are interested in learning more information about grinding wheels or related products, welcome to contact with Besdia directly!

 

 

Article Source: http://blog.cdtusa.net/what-are-metal-bond-grinding-wheels-and-what-benefits-do-they-offer

Something You Need to Know about Height of Volleyball Nets

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The height of volleyball nets varies depending on the age group that is playing Volleyball. Logically, the net height is considerably lower for the younger players and it gets taller as the age group grows. Also, the net height for women is slightly lower than that for men’s volleyball, because females are typically smaller in height. The net is positioned at a height regardless of your age that requires a reasonable jump to get above it (unless you are unusually tall). For a tall Volleyball player, usually they can just reach the top of the net without jumping, but you wouldn’t be able to block or hit the ball over straight down without jumping.

 

What this means is that you need to learn to jump as high as possible. In fact, the taller that you can reach the more chance you have of getting the ball down on the opponent court. Some of the tall players in volleyball are able to jump up a meter in the air, meaning that their total reach is often near 3 and a half meters! The full net height for males is 2.43 meters, and for females it is 2.24 meters. The net height is adjusted by loosening the net with the winch, undoing the pin that goes through the net pole, sliding the net up and then fitting the pin in again. From there, you simply wind the net back up so it is taught.

 

You might think that just because you aren’t tall that you have no chance of being a good spiker. In experience, those that are smaller have bigger jumping abilities, meaning that they have about the same height jump as someone who is tall. Of course, being tall has its advantages for blocking and spiking. You can always increase your vertical jump, but you aren’t always able to grow more!

 

Check out Holyhoe’s volleyball nets for selection. Holyhoe provides the complete solutions for the sports’ nets and accessories and we have been supplying high quality products to the international customers around the globe. Welcome to contact us to learn further details about volleyball nets!

 

 

Article Source: http://EzineArticles.com/5670379

Employing Lifting Magnets for Material Handling Operations

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Magnetic lifters are a lightweight and cost-effective way of transporting heavy materials in situations where another method of material handling would be difficult, dangerous, or expensive.

 

These lifters use magnets to hold heavy materials securely without requiring clamps, slings and other holding equipment. They are most beneficial in situations in which another method of material handling would be difficult, dangerous, or expensive.

 

Lifting magnets vary widely in size. Usually, the larger ones are hung from a chain on a crane that is able to move the lifting magnet into the location necessary to retrieve the material. This type of lifter can be used for a wide variety of purposes, including automobile junking, construction, and demolition and cleanup.

 

How Lifting Magnets Work

 

There are two types of lifting magnets: permanent magnets and electromagnets. Permanent magnets use permanently magnetized material to create a magnetic field. They can be used to lift loads up to 2,200 pounds. These lifters can be moved easily to various work locations. However, one disadvantage of permanent magnets is that they have a restricted lifting capacity. If a variable lifting capacity is required, the optimum choice is the electromagnetic lifter.

 

Electromagnetic lifters use an energized electrical coil wound around a steel core to orient magnetic domains within ferrous materials in a common direction, thus, creating a magnetic field. Unlike permanent magnets, electromagnets require a constant DC power source. Hence, a power failure can be a safety issue with electromagnets unless an emergency power or backup supply is integrated with this type of lifting system.

 

Permanent magnets are favored (1) when electricity is not available, (2) when power failures are a common occurrence, or (3) when adjustable magnetic force is not necessary. Electromagnets are the choice for applications where varying strength or remote magnet control is required.

 

Suitable Applications for Lifting Magnets

 

Smooth, Flat Surfaces: Permanent lifting magnets are manually operated. They create a very strong but low magnetic field so they are sensitive to air gaps between the magnet and the load. When an air gap increases, the magnetic force will be significantly reduced. They work best on smooth, flat surfaces rather than rough and irregular ones.

 

Type of Material: While ferromagnetic materials are inherently magnetize-able, paramagnetic materials, such as aluminum and magnesium are not. (Diamagnetic materials, such as copper, lead, and silver, do not magnetize.) For materials other than iron-based materials, a reduction factor must be calculated to determine the effective holding force.

 

Thickness of Material: The thickness of the material to be lifted also plays a role factor in selecting a lifting magnet. Thick materials are the best candidates. Materials thinner than the specification for the lifting magnet will have a much lower level of holding force.

 

Benefits

 

Lifting magnets save time by reducing and sometimes eliminating blocking and slinging. They can also eliminate or decrease waste. They reduce product damage commonly caused by chains, hooks, and other mechanical grabs. But the significant advantages of lifting magnets are ease of operation and cost-effectiveness.

 

Earth-Chain Enterprise Co., Ltd. is a professional manufacturer of specializing in lifting magnet, magnetic precision tools, magnetic clamping block, and etc. magnetic tools. If you are interested in learning further details about our lifting magnet series, welcome to browse Earth-Chain’s website or contact with us directly!

 

 

Article Source: http://EzineArticles.com/6074964

What are CNC Tool and Cutter Grinder and Its Applications?

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Today’s tool and cutter grinder is typically a CNC machine tool, usually 5 axes, which produces endmills, drills, step tools, etc. which are widely used in the metal cutting and woodworking industries.

 

Modern CNC tool and cutter grinders enhance productivity by typically offering features such as automatic tool loading as well as the ability to support multiple grinding wheels. High levels of automation, as well as automatic in-machine tool measurement and compensation, allow extended periods of unmanned production. With careful process configuration and appropriate tool support, tolerances less than 5 micrometers (0.0002″) can be consistently achieved even on the most complex parts.

 

Apart from manufacturing, in-machine tool measurement using touch-probe or laser technology allows cutting tools to be reconditioned. During normal use, cutting edges either wear and/or chip. The geometric features of cutting tools can be automatically measured within the CNC tool grinder and the tool ground to return cutting surfaces to optimal condition.

 

Significant software advancements have allowed CNC tool and cutter grinders to be utilized in a wide range of industries. Advanced CNC grinders feature sophisticated software that allows geometrically complex parts to be designed either parametrically or by using third party CAD/CAM software. 3D simulation of the entire grinding process and the finished part is possible as well as detection of any potential mechanical collisions and calculation of production time. Such features allow parts to be designed and verified, as well as the production process optimized, entirely within the software environment.

 

Tool and cutter grinders can be adapted to manufacturing precision machine components. The machine, when used for these purposes more likely would be called a CNC Grinding System.

 

CNC Grinding Systems are widely used to produce parts for aerospace, medical, automotive, and other industries. Extremely hard and exotic materials are generally no problem for today’s grinding systems and the multi-axis machines are capable of generating quite complex geometries.

 

Top Work is the expert of manufacturing tool and cutter grinders. We specialize in the grinder development to diversify our products and elevate the quality. If you are interested in learning further details about tool grinders, welcome to browse Top Work’s website and feel free to contact with us via Email or phone.

 

 

Article Source: https://en.wikipedia.org/wiki/Tool_and_cutter_grinder

Overview and Basic Design of Valve Stem Oil Seals

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Valve stem oil seals are small relative to other gaskets and seals in an engine, but play an important role in lubrication. What makes valve stem seals different than almost every other type of seal? The answer is simple – they are designed to leak. Seals designed to leak may sound counter-intuitive, but the amount and way in which they leak is precisely controlled to achieve a specific goal.

 

Valve stem seals provide a controlled leak of oil to allow the valve stem to be lubricated as it slides in the valve guide. The amount of oil that passes by the valve stem seal must be precisely controlled, as too little oil causes stem and guide wears. Too much oil causes carbon buildup leading to valve seat damage, decrease in volumetric efficiency, increased emissions and excessive oil consumption.

 

There are two basic valve stem oil seal designs:

 

  1. Deflector seals – also called umbrella seals, deflect oil away from the valve stem. They are secured to the valve stem and move with the valve to shield the valve guide from excess oil. Umbrella type seals were commonly used prior to the development of positive type seals.

 

  1. Positive seals – attach to the valve guide boss and function as squeegees, wiping and metering oil on the stem as they pass through the seals.

 

AOK supplies high quality Valve Seals for cars such as Alfa Romeo valve seals, BMW vehicle valve seal and motorcycle’s, etc… In order to maintain high quality, the valve stem oil seals from AOK are all inspected thoroughly, therefore, AOK has won worldwide recognition.

 

If you are looking for various rubber parts, oil seal, or others, please don’t hesitate to contact with AOK via phone call or email. Let us know your requirements to find what you need.

 

 

Article Source: http://www.felpro-only.com/blog/valve-stem-seals_/

Fishing Waders Help Keep You Dry

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Getting a good start in fly fishing as a new hobby can be as easy as making a list of all the equipment you will need. Keeping dry while wading is very important so a good place to start would be with fly fishing waders.

 

This all important piece of equipment is a pair of overalls with straps that go over your shoulders and cover your chest with a pair of rubber boots that fit over your feet keeping them dry. Hip waders are also available with rubber boots.

 

When looking at hip waders keeps in mind they look like two large rubber boots that fit up to the hip. These waders will help keep the fisherman dry while offering support from the padded reinforced knees. This feature comes in handy if the fisherman takes a fall or needs to kneel down. Discount fishing waders can be found in both chest and hip fishing waders.

 

Hodgman pants are one of the popular brands chosen by fly fishermen. When shopping for waders, hip or chest online it is important to have measurements for chest, outseam, inseam and shoe size. If shopping at the local sporting goods store the salesman will be able to help with measurements or the waders can be tried on before buying.

 

When shopping for waders check out simms fishing boots. The simms fishing waders are made with five layers of material that prevents tears around the chest area, is waterproof, and comes with hand warmers and a zippered chest pocket.

 

PACIFIC EAGLE Enterprise Co., Ltd. is a specialized OEM company. We have engaged in manufacturing of neoprene, hunting and fishing field products for over 25 years. If you are interested in learning more information about simms fishing waders or other waders, welcome to visit our website or fill out the form at Pacific Eagle for any technical support or requests for quotations.

 

 

Article Source: http://EzineArticles.com/3591673