Role of Metrology and EDM Drill in Precision Engineering
Electrical Discharge Machining, better known as acronym EDM is a manufacturing process. It is a state-of-the-art method that has replaced the traditional drilling, milling and grinding with electrode based drilling for accurately shaping and sizing out products from hard metals. The method involves employing electrical charge on an extremely hard metal for eroding it into desired shape and size. drill edmThe method is used across metals such as Kovar, Titanium, Carbide, Hastelloy and Inconel.
Science of Measurement
As already pointed out earlier, accurate measurement in all respects is critical for manufacturing of precision parts. As a result, the engineering companies need a science of measurement that covers both practical and theoretical measurement issues, as well as, offers inclusive values of quantity, such as length, time, temperature, quantity of a certain material and so on. In other words, the engineering companies use Metrology (the science of measurement) to carry out accurate measurement of any quantity.
The science of Metrology is extensively employed by manufacturers of extrusion parts. These engineering companies need to be super precise in terms of measurements during production of precision parts, such as idler rolls, ceramic guides, interlacing jets, aspirators, texturing jets etc. As a result, they need to be equipped with the best quality precision machines, better known as, Computer Numerically Controlled (CNC) machines. This is of course in addition to deft engineering staff to operate these machines. The various CNC machines that are required to accomplish precision manufacturing include CNC Multitasking machines, CNC Milling machines, CNC Lathes, CNC High Speed Hard Milling machines and EDM Drill. Besides, these engineering companies boast of a state-of-the-art Industrial Metrology and Metallurgical Laboratory for high quality precision manufacturing.
An EDM drill machine also uses electrode for generating electric sparks that can erode hardest of metals into desired shapes and sizes. The electricity released by the drill is a constant square wave, which when flows on to the surface of the metal,ensures quick and deep erosion with extreme precision. In other words, the EDM drill machine promise to enhance productivity and efficiency during production, that too in a relatively decreased amount of time. Naturally, the drill machines are in high demand and come in broad range. The machines are broadly classified on their strength of drilling through hard metals. You must choose the EDM machine that best suits your requirement for best efficiency during production process. Not to mention, you must always buy the machine from a genuine dealer of repute for lasting customer satisfaction.
2012年8月5日星期日
Know More About Cycle Racing
Know More About Cycle Racing
The bicycles used for cycle racing are specially designed and engineered to adhere to the rules of the UCI. They usually sacrifice comfort in favor of speed. The drop handlebars are placed in a lower position than the saddle. This helps the cyclist maintain a highly aerodynamic posture. These bicycles also have their front and rear wheels positioned close together to facilitate quicker handling. There are some racing bicycles modeled for recreational use also.
Bicycle racing is quite popular all over the world, especially in countries like France, Germany, Spain, the Netherlands, Switzerland, Italy, and Belgium.brake racing The first bicycle race was purportedly held on May 31, 1868, at the Parc de Saint-Cloud in Paris.
There are various types of bicycle races - for individuals as well as teams, and for amateurs as well as professionals. Mountain bike racing, track cycling, road bicycle racing, and time-trialling are a few of the categories of bicycle racing events.
Road races usually take place between spring and fall. There are professional one-day road races such as the Milan - San Remo and Ronde van Vlaanderen. There are also races that take place in several stages and span multiple days. These multi-day races include the very popular Tour de France, Tour of California, Giro d'Italia, and Vuelta a Espana.
Bicycle racing is a competitive sport conducted all over the world. It is a recognized Olympics event and has several categories based on the type of bicycle used for racing. International cycling events as well as the sport of cycling are governed by an international body called the Union Cycliste Internationale (UCI), which was formed on April 14, 1900.
Track cycling takes place on banked tracks called velodromes. The bicycles used in track cycling do not have freewheels or brakes.
Cyclocross racing is another type of cycle racing. It originated as a sport after it served as a sort of training for cyclists during the cold months, i.e., during the off season. Cyclocross races usually take place during the autumn and winter months. They consist of many laps of a 2-3 km course that features steep hills, grass, pavements, wooded trails, and other obstacles. The cyclist is required to dismount, carry the bicycle and remount it, all in one smooth motion.
With the advent of numerous types of digital technologies, you can keep track of cycling events all over the world through videos, photos, satellite trackings, blogs, voice-casts, and more. Of course, watching a cycle racing event first hand is an adventure in itself.
The bicycles used for cycle racing are specially designed and engineered to adhere to the rules of the UCI. They usually sacrifice comfort in favor of speed. The drop handlebars are placed in a lower position than the saddle. This helps the cyclist maintain a highly aerodynamic posture. These bicycles also have their front and rear wheels positioned close together to facilitate quicker handling. There are some racing bicycles modeled for recreational use also.
Bicycle racing is quite popular all over the world, especially in countries like France, Germany, Spain, the Netherlands, Switzerland, Italy, and Belgium.brake racing The first bicycle race was purportedly held on May 31, 1868, at the Parc de Saint-Cloud in Paris.
There are various types of bicycle races - for individuals as well as teams, and for amateurs as well as professionals. Mountain bike racing, track cycling, road bicycle racing, and time-trialling are a few of the categories of bicycle racing events.
Road races usually take place between spring and fall. There are professional one-day road races such as the Milan - San Remo and Ronde van Vlaanderen. There are also races that take place in several stages and span multiple days. These multi-day races include the very popular Tour de France, Tour of California, Giro d'Italia, and Vuelta a Espana.
Bicycle racing is a competitive sport conducted all over the world. It is a recognized Olympics event and has several categories based on the type of bicycle used for racing. International cycling events as well as the sport of cycling are governed by an international body called the Union Cycliste Internationale (UCI), which was formed on April 14, 1900.
Track cycling takes place on banked tracks called velodromes. The bicycles used in track cycling do not have freewheels or brakes.
Cyclocross racing is another type of cycle racing. It originated as a sport after it served as a sort of training for cyclists during the cold months, i.e., during the off season. Cyclocross races usually take place during the autumn and winter months. They consist of many laps of a 2-3 km course that features steep hills, grass, pavements, wooded trails, and other obstacles. The cyclist is required to dismount, carry the bicycle and remount it, all in one smooth motion.
With the advent of numerous types of digital technologies, you can keep track of cycling events all over the world through videos, photos, satellite trackings, blogs, voice-casts, and more. Of course, watching a cycle racing event first hand is an adventure in itself.
Engineering Plastic Bearing and Metal Compound Bearing
Engineering Plastic Bearing and Metal Compound Bearing
From the above-mentioned introduction, it can be concluded that the Plastic Bearing and metal sliding bearing have the following differences. Firstly, the whole plastic bearing is the lubricating material and it has a long operation life. As for the metal sliding bearing, only the 0.003mm PTFE is the lubricating layer. When the thin layer is removed, the operation life of the bearing is over. Secondly,slide bearing the plastic bearing is rust-proof and corrosion-proof. As for the metal bearing, it is easy to rust and cannot be used in the chemical liquid. Thirdly, compared with the metal bearing,Plastic bearing the cost of the plastic bearing is lower. Besides, there is no noise when the plastic bearing is in operation and it has the function of vibration absorption.
In the market, the plastic bearing is the main representative in the non-metal sliding bearing. In general situation the plastic bearing is made by the engineering plastics with a relatively good property. The professional factories are usually good at the technologies such as self-lubricating technology of the engineering plastics. Through the fiber, special lubrication, glass bead and so on the self-lubricating property can be enhanced. And then in use of the treated engineering plastics, the self-lubricating plastic bearing can be processed by the way of injection technology. At present, the manufacturers such as IGUS in Germany, CSB in China are quite excellent in this field around the world.
At present the used bearings can be classified into rolling bearing and sliding bearing. As for their working principle, people can distinguish them from their names. When the rolling bearing is in operation, the occurred friction is called rolling friction. When the sliding bearing is in operation, the friction is known as sliding friction. The amount of the rolling friction depends on the bearing's manufacturing accuracy. As for the amount of the sliding friction, it has a close relationship with the material of the bearing's sliding surface. the working surface of the rolling bearing has the self-lubricating function. According to the material, the sliding bearing can be grouped into non-metal sliding bearing and metal sliding bearing.
Now the most popular metal sliding bearing is three-layer compound bearing. The carbon steel plate is the base plate of this bearing. Firstly, through the sintering technology a layer of ball-shaped copper powder will be sintered on the carbon steel plate. Then a layer of 0.03mm PTFE lubricant will be sintered on the layer of the copper powder. The function of the ball-shaped copper powder is to enhance the bonding strength between the carbon steel plate and PTFE. What's more, in operation it can have the function of support and lubrication. GGB company in the USA, OILES company in Japan and CSB company in China are the professional manufacturers.
From the above-mentioned introduction, it can be concluded that the Plastic Bearing and metal sliding bearing have the following differences. Firstly, the whole plastic bearing is the lubricating material and it has a long operation life. As for the metal sliding bearing, only the 0.003mm PTFE is the lubricating layer. When the thin layer is removed, the operation life of the bearing is over. Secondly,slide bearing the plastic bearing is rust-proof and corrosion-proof. As for the metal bearing, it is easy to rust and cannot be used in the chemical liquid. Thirdly, compared with the metal bearing,Plastic bearing the cost of the plastic bearing is lower. Besides, there is no noise when the plastic bearing is in operation and it has the function of vibration absorption.
In the market, the plastic bearing is the main representative in the non-metal sliding bearing. In general situation the plastic bearing is made by the engineering plastics with a relatively good property. The professional factories are usually good at the technologies such as self-lubricating technology of the engineering plastics. Through the fiber, special lubrication, glass bead and so on the self-lubricating property can be enhanced. And then in use of the treated engineering plastics, the self-lubricating plastic bearing can be processed by the way of injection technology. At present, the manufacturers such as IGUS in Germany, CSB in China are quite excellent in this field around the world.
At present the used bearings can be classified into rolling bearing and sliding bearing. As for their working principle, people can distinguish them from their names. When the rolling bearing is in operation, the occurred friction is called rolling friction. When the sliding bearing is in operation, the friction is known as sliding friction. The amount of the rolling friction depends on the bearing's manufacturing accuracy. As for the amount of the sliding friction, it has a close relationship with the material of the bearing's sliding surface. the working surface of the rolling bearing has the self-lubricating function. According to the material, the sliding bearing can be grouped into non-metal sliding bearing and metal sliding bearing.
Now the most popular metal sliding bearing is three-layer compound bearing. The carbon steel plate is the base plate of this bearing. Firstly, through the sintering technology a layer of ball-shaped copper powder will be sintered on the carbon steel plate. Then a layer of 0.03mm PTFE lubricant will be sintered on the layer of the copper powder. The function of the ball-shaped copper powder is to enhance the bonding strength between the carbon steel plate and PTFE. What's more, in operation it can have the function of support and lubrication. GGB company in the USA, OILES company in Japan and CSB company in China are the professional manufacturers.
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