Parts And Functions Of Drill Machines

drill machine

There are many types of drill machines, here we take a closer look at the handheld power drill.

It is a practical and versatile tool when it comes to drilling a hole in different materials. Be it wood, plastic or stone – the drill allows you to drill holes with different diameters and depths.

Casings

The externally visible part of the drill is the housing. It is usually made of plastic and is manufactured in half-shell construction.

On the housing are manufacturer information and usually a nameplate indicating the electrical power consumption, the number of revolutions, the operating voltage, and the protection class?

Many drills still have an extra handle that attaches to the housing. Such a drill is easy to hold with two hands.

Motor

The electric motor is the heart of every drill. It generates the necessary rotational movement of the drill. Most motors are operated with 220V AC voltage.

Gearbox

The high speed of the electric motor is not suitable for drilling, so by means of a gearbox, the high speed of the motor is translated into a lower speed of the drill.

In this case, a gear transmission is used, which is designed as a manual transmission. This makes it possible for at least 2 different gear ratios (“gears”) and sometimes even a “reverse gear”. This setting is made with the “gearshift”.

Chuck

This part of the drill is an attachment that picks up the drill and allows you to work with different drills by swapping them quickly. By the chuck key, the jaws can be moved inside the chuck and the drill can be fixed or loosened again.

Drill Bits

The drill (more precisely, the drilling tool) is the insert that is picked up by the drill chuck. Through the cutting edge at the top, he penetrates into the material. There are drills for various materials – for metal, stone, wood, and plastic. The drill with a conical head.

A special type of hand drill is the impact drill. Here, the (switchable) impact mechanism in addition to the rotational movement of the drill lifting movements at high frequency. These feel like a vibration during drilling and support the drilling of materials such as concrete or stone.

What Is The Difference Between Oil-Free And Oil-Lubricated Compressor

oil free compressor

Oil-free compressor vs. oil lubricated compressor

You are unsure whether an oil-free compressor or an oil-lubricated compressor is right for you? Depending on the requirements you place on your compressor, different models are possible.

When choosing the right device, it helps to ask yourself the following questions: Do you need a highly compressed air power, about 10 bar or 15 bar, or is a lower pressure sufficient?

Should the compressor be oil-free or is an oil-lubricated model better suited for your purposes?

Which type of compressor is more economical? Do you need the compressor as an endurance runner, that is, will it be in constant operation or is the compressor used at intervals?

In addition, the question arises as to whether the compressor is quiet must be (so-called quiet running compressors) or the sound insulation plays a minor role (e.g, when operating in a separate room).

Below you will find an overview of the advantages and disadvantages of oil-free compressors compared to oil-lubricated compressors, their applications, and quiet running compressors.

Oil-free compressors

In some purchasing decisions, the question of a comparison with the oil-lubricated air compressor is not. In certain applications, an oil-free compressor is essential or mandatory:

  • the oil-free compressor in the laboratory
  • Dental medicine
  • Spraying
  • Environmental Measurement
  • Food u. beverage industry
  • pharmaceutical industry
  • chemical industry
  • Electrical engineering

In addition, best quiet air compressor is more and more oil-free compressors are also used in areas where an oil-lubricated compressor could also be used. The main reasons for this are the low environmental impact and the minimal maintenance effort. The Airwin oil-free compressors we offer also have the advantage of being particularly quiet.

 Advantages and Disadvantages At A Glance

Oil-Free Compressor Advantages

  • minimal maintenance
  • clean, oil-free compressed air
  • no oil change / oil separation required
  • no oil filter replacement necessary
  • especially environmentally friendly
  • Treatment and disposal costs are eliminated

Oil Free Compressor Disadvantages

  • limited operating pressure up to 8 bar
  • high investment costs for equipment with a relatively high intake volume.

Oil Lubricated Compressors Advantages

  • higher operating pressure possible
  • simultaneous lubrication (eg important for compressed air tools)
  • long lifetime

Oil Lubricated Compressors Disadvantages

  • higher maintenance costs
  • Oil change & disposal of used oil required
  • Oil leaks can occur
  • Air / environmental pollution

Conclusion

An oil-free air compressor offers many advantages. The lower maintenance costs are not only reflected in the lack of purchase cost of compressor oil and air filter, but also include the amount of time an employee or a maintenance service has to do.

Oil level controls are eliminated, there is no hazardous waste (waste oil), and you can also save oil filter and oil separator.

For certain areas (see above), a compressed air compressor that operates without oil is also essential.

The compressed air containing trace amounts of oil can not be used in sensitive areas, e.g, in the production of food, medical and hygiene articles, in the laboratory and in research, or in the processing of paints and varnishes.

Oil-free compressors are  well-suited for

  • Paint processing,
  • Blowing with clean compressed air,
  • For airbrushing,
  • In the production and processing of food and beverages,
  • In laboratories,
  • In dentistry or dental technicians / dental laboratories,
  • In the dust removal,
  • In the field of production of electronic parts
  • In the pharmaceutical or chemical industry,
  • To prevent contamination with oil.

Another advantage is the lower volume of oil-free Air Win compressors over ordinary reciprocating compressors.

The oil lubricated compressor then the better choice if the required compressed air, or the speed could only be achieved with very expensive oil-free compressors and the oil for the lubrication of e.g, pneumatic tools is advantageous.

In addition, when investing in your compressed air system, remember that an oil lubricated compressor has a longer service life than a device without oil.

Advantages Of Cool Welding Helmets

cool welding helmet

LARGE VIEWABLE FIELD

Large field of view provides good visibility of the welding object and the environment. Adjustable sensor slide to change the detection angle from 120 ° to 60 °. Thus, a reaction of the welder cassette to light pulse from the environment can be prevented.

WSH II 9-13: Equipped with an additional sensor for even more sensitive reaction. Protection level fine adjustment between DIN 5-9 and DIN 9-13 (WSH II 5-13) or DIN 9-13 (WSH II 9-13) Controller to adjust the sensitivity to the environmental conditions and your own needs.

SWITCHING TIME

Opening delay to adjust the switching time from dark back to bright state. WSH II 9-13: Auto or manual mode in auto mode, the helmet automatically adapts the adaptation of the protection level to the respective arc intensity.

MANUAL MODE

In manual mode, the cool welding helmet remains in the set protection level. WSH II 5-13: Protection level setting DIN 5-9 or DIN 9-13 Abrasive mode for switching off the cassette for flicker-free grinding Interchangeable backup batteries for constant power supply to the consistent.

WSH II 9-13

The WSH II 9-13 is ideal for all applications with changing welding processes. This helmet allows a stepless adjustment between the protection levels 9 and 13 and is also equipped with an automatic mode, which individually adapts the protection level to the respective conditions.

Ergonomic helmet design with minimal strain on the neck muscles and comfortable headband with telescopic mechanism.

Special smoke-resistant design.

Rear-facing lens to prevent scratches.

Anti-glare cassette with lots of clever details.

Additional sensor so that the helmet responds even more sensitive.

Auto or manual mode for the automatic adaptation of the protection level or manual adjustment of the arc intensity

The WSH II 5-13 is the welding helmet for almost all welding processes.

The steeples adjustment between the protection levels 5 and 13 makes the helmet the perfect working tool for demanding welders with changing welding processes.

The Importance Of Happy Mother Day

happy mother day

Mother Day Quotes

Dear Mama, On this occassion of Happy Mothers Day, I owe my life to You, you have only ever given me the best, I’m holding you tight because I love you And thank God that you exist!  You have given me the life Have a big thank you, You are the best mom in the world, I wish you all the love for Mother’s Day! I wish you to Mother’s Day Health, happiness, and sunshine, I give you flowers and a kiss And send you a kind greeting! Dear Mum Today is your feast, You are the best and have a big heart, I brought flowers to you today And I wish you all the love for Mother’s Day! I cannot remember a long poem, And I wonder: What should I give you? I give you a kiss and hug you, You’re the best mom in the world! Dear mum, I love you very much, You are the best mum that ever exists, I wish you a long and happy life, May God give you only the best? Be happy, stay healthy and strong I send you my best wishes Mother’s Day!  Much love for Mother’s day!

Mother’s Day is a wonderful holiday in honor of mother and motherhood because the most important person in our lives is our dear mother: she gives birth to us, cares for us, loves and supports us all her life.

Mother’s Day is a nice family party. Even though we can make Mother’s Day every day and show our love and gratitude every day, it is still nice that we dedicate one day a year to our mother alone. It is also a wonderful occasion to spend more time with the family or to visit the mum.

Mother’s Day is always held on the second Sunday of May in German-speaking countries.

Gifts for Mother’s Day

On Mother’s Day we want to give our mom a treat, give her something nice and spoil her. The traditional Mother’s Day gifts are flowers, chocolates, and a nice card.

Usually, our mother can buy everything herself, so it’s usually small gestures and attention that give her the most pleasure. For example, on this day you can prepare breakfast for you, cook something special, bake a cake or organize a family outing. It is important that our gift is made with love and comes from the heart.

A personal gift, such as a homemade card, is very original and equally well received. Here you can find beautiful sayings and poems for Mother’s Day.

Heathrow to Gatwick Airport

heathrow gatwick airport

From Heathrow to Gatwick Airport, the fastest is 1.5hr by public transport, or you can call a taxi for about 50mins.

In other words, the aircraft is not delayed, everything goes well, you do not check baggage, and 2hrs can get off the plane to Gatwick airport,

Then the ground is pleased to let you check in 1hr before boarding.

In fact, the general mode of public transport passengers should stay 5hrs above.

That cannot get on how to do? Three possibilities, the first is to transit when the border officials directly to your repatriation, do not let you inbound. Because you show a plane ticket that is almost impossible to get on unless you have enough evidence that you just want to turn around.

The second solution is to change the votes as soon as possible.

The third way is to contact the ticket seller, if you two flights are sold by the same travel agency, on behalf of their homework problems, or airlines approved such a trip, then by that time if you cannot keep up the next class Aircraft, airlines are willing to help you change the votes. But not like this, please ask the travel agency (the person who sells you).

If the airlines (travel agencies) approve of such transit options, they can also contact them to determine the itinerary can be so go.

From gatwick to heathrow transfer to the Italian ticket will be better, because an airport in the west one in the south, take public transport basically should be too late, take a taxi maybe you can buy a ticket

I tried to contact the person selling tickets, this is a special ticket, not for any changes ^^, I consider too much to buy a ticket from LHR to VCE, but the return ticket is invalid!

So you can only rush to LGW in time to go all the best, or buy a ticket from Britain to Italy and return to Hong Kong, the latter cost you can buy a new Italian round-trip ticket! That can only choose the former. Now to consider how to get to the plane and less than the aircraft, the moment how to deal with.

You said BACKPACKER and take a taxi will consider ^^ but not sure enough to catch the plane, I think about it could not catch up on the machine should do it!

From Heathrow departure to the Italian ticket will be better, because an airport in the west one in the south, take public transport basically should be too late, take a taxi maybe you can buy a ticket

First, The Concept And Working Principle Of Proxy Server

proxy-sites-list-vpn

Proxy server (A) the concept of proxy server with the rapid development of Internet technology, more and more computers connected to the Internet. Many companies also have their own corporate LAN access to the Internet. How to quickly access Internet sites, improve network security, has become a hot topic today. In this case, the proxysite came into being.

Concept Of Proxy Server

The concept of proxy server, it is an intermediary between the personal network and Internet service agencies, which is responsible for forwarding legitimate network information, the forwarding control and registration. As a bridge between Internet and Internet, proxy server plays an extremely important role in practical application.

It can be used for many purposes, the most basic function is to connect, in addition to security, cache, content Filtering, access control management and other functions. Proxy server, as its name suggests, is a machine that cannot directly access the Internet in the local area. It sends the Internet access request (for example, browsing a certain home page) to a proxy server that can directly access the Internet.

Then the proxy server completes the Internet access request, into the proxy server’s cache; then pass this page to the requester. Such machines on the LAN are just as capable of accessing the network directly. And, the proxy server can also be some of the site’s filtering and control functions, thus enabling us to control and save Internet costs.

Proxy servers allow computers without IP addresses to use their proxy features to quickly and securely access Internet resources. When the proxy server client sends an external resource access request, the request is first recognized by the proxy server and requested by the proxy server to request resources.

Because the general proxy server has a large bandwidth, high performance, and can intelligently cache browsed or unbrowsed website content, under certain circumstances, the client can access the network resources through the proxy server more quickly. Common examples of proxy server applications: A LAN with hundreds of computers can also access the external Internet through a proxy server that has access to external network resources.

The function of the proxy server

The LAN port, Serving as a connection between the LAN and the external network serves as a connection port between the LAN and the external network. At the same time, the internal network structure is shielded from the external network so that the external network cannot directly access the internal network. At this point, the proxy server acts as a gateway.

What Is Proxy mode?

proxy site

Proxy mode use the proxy object to complete the user request, shielding the user’s access to the real object. Real-world agents are empowered to carry out some matters of the parties without the need for the parties to come forward. From a third-party perspective, it seems that the parties do not exist because they only communicate with the agents. In fact, agents must have the authority of the parties, and on the core issues also need to ask the parties.

There are also a number of intent to use the proxy mode in software design, such as the need to shield the client from direct access to real objects for security reasons, or the technical details (such as RMI) of using proxy classes to handle remote method calls in remote calls Improve system performance, and encapsulate real objects so as to achieve the purpose of lazy loading.

Agent mode role is divided into four kinds:

Thematic Interfaces: A public external method that defines proxy classes and real topics, and is also a way to represent the true topic of proxy classes;

The real theme: the real business logic class;

Agent category: used to proxy and package the real theme;

Main: Client, using proxy classes and thematic interface to do some work.

Lazy loading

A simple example to explain the use of proxy mode lazy loading method and its significance. Suppose a client software based on user requests to the database query data. Before querying data, you need to get the database connection, initialize all the classes of the system when the software is turned on, and try to get the database connection.

When the system has a large number of similar operations exist (such as XML parsing, etc.), all of these initialization operations will make the system start very slow. To this end, the use of the proxy mode proxy encapsulation of the database query initialization operation, when the system starts, initialize this proxy class, rather than the real database query class, and the proxy class did not do anything. Therefore, its construction is quite rapid.

When the system is started, the method that consumes the most resources is separated by the proxy mode, which can speed up the startup of the system and reduce the waiting time of the user. In the real user query operation by the proxy class alone to load the real database query class to complete the user’s request. This process is to use the proxy mode to achieve a lazy loading.

Core idea behind deferred loading Proxysite

The core idea behind deferred loading is that if you do not currently use this component, you do not need to actually initialize it, use a surrogate object instead of its original location, and load it whenever you really need it. It is very meaningful to use the lazy loading of the proxy mode.

Firstly, it can distribute the system pressure on the timeline. In particular, it does not have to complete all the initialization tasks at the system startup, so as to speed up the startup time. Secondly, for many real themes, May not be called at all until the software is started until it is shut down. Initializing these data is a waste of resources.

For example, using the proxy class encapsulates the database query class, the system startup process for this example. If the system does not use the proxy mode, it is necessary to initialize the DB Query object at startup, and use the proxy mode, only need to initialize a lightweight object DB Query Proxy at startup.

The following code ID Query is the thematic interface, defines the proxy class and the real class needs external services, defines the common method request () function to achieve database queries. DB Query is the real theme, responsible for the actual business operations, DB Query proxy class.