TMG manufactures precision mechanical machining with variable diameter teflon bars for lathe machining, and mechanical elements on block plates for milling work.Teflon is a solvent-resistant polymer of any type. Its use in precision mechanics is motivated by precise mechanical features combined with its great lightness. Approfondisci “TMG: the teflon peculiarities in precision mechanics”
Year: 2017
Precision cnc machining and processing of high precision mechanical parts
For the production of high precision mechanical parts after the passage from the lathe machines it may be necessary to rectify an additional treatment of the grinding components. This adjustment allows you to also eliminate the last residues of material and to obtain a component conforms exactly to the project.
On high-precision cnc machining parts can be performed so additional processing to further improve the surface of the component. After washing the components in tanks of solvents, which are used to clean the material from all impurities, you can proceed, for example, the burnishing or nickel plating. The T.M.G. It performs at the request of high precision mechanical parts treatments to ensure a perfect finish of the components, as in the medical or hydraulic industry.
In pressurized circuits hydraulics the perfect calibration of the components is a prerequisite to ensure the watertight integrity of every detail and also the processing of materials is carefully evaluated to ensure reliable assemblies.
The precision cnc machining of high precision mechanical parts therefore not only limited to the realization of the structural part of the component but requires complex operations which give the original material in a high capacity for endurance of workloads can occur over time. Only when all the stages of preparation of the component respond to the fulfillment of the requirements in the design phase will start production of the component in the guarantee of an excellent quality standard
All the possibilities of precision mechanics: discovering PTFE
Massively used in precision mechanics, Teflon is the trade name of polytetrafluoroethylene (PTFE), a polymer belonging to the class of perfluorocarbons, which are added other stabilizing components and thinners to improve the application possibilities.Teflon is the trade name of polytetrafluoroethylene (PTFE), a polymer belonging to the class of perfluorocarbons, which are added other stabilizing components and thinners to improve the application possibilities.
It is the material with the lower coefficient of friction known and has a considerable resistance towards external agents, a high degree of non-stick properties and resistance to low and high temperatures (from -200 ° C to + 260 ° C). It is therefore considered one of the most stable plastics materials from the thermal point of view, great to be worked in the cnc precision mechanics also.
The PTFE was discovered accidentally by Roy Plunkett in 1938, during an attempt to manufacture a chlorofluorocarbon for use as refigerante for the compression cycles.
Some of Teflon characteristics, such as the total chemical inertia (which is not attacked by chemical compounds, except that of the alkali metals in the molten state, high-pressure fluorine and some of its compounds), the complete insolubility in water and organic solvents , the fire resistance, over wing surface smoothness and all’antiaderenza, make it indispensable in precision mechanics for gaskets and the parts intended for contact with corrosive agents, in the engines, to reduce the friction of the exchange, for vehicle windscreen wipers, as insulating material and for many other uses in the mechanical, computer and food.
Brass in precision cnc machining, wath you need to know
In precision cnc machining, brass is an oxidizable alloy formed by copper (Cu) and zinc (Zn) and optionally other elements. They say the brass rails formed only of copper and zinc, ternary those in which there is another element and quaternary ones where there is a quarter of a chemical element that characterizes the league.
For the brass binary one speaks of α phase when the zinc content is less than 36%. These brasses have an excellent cold workability (drawing and molding) and a good hot workability. The alloys with a 45% higher percentage of zinc have no practical interest.
The copper-zinc binary, also in precision cnc machining work progress, alloys are normally machined by numerical control machine (CNC machining precision), but their toughness causes the formation of very long chips. To obviate this drawback it adds that of lead, remains completely separated from the alloy and, due to its lower melting temperature, is the last element to solidify. So, it will be distributed to the edges of the grains of the copper-zinc alloy making very short chips or even dusty and safeguarding cnc machining services.
The brasses are also referred to lead-dried brass and are used for the pieces machined on a lathe, such as valves and faucets. CuZn39Pb3, in particular is used for gears, pinions and for all those details to complex shapes requiring a machine tool working by removal of very high-speed chip.
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Precision mechanics: the heat treatment of metals
In precision mechanics, among the processes performed on ferrous materials for the production of one of the heat treatment of precision mechanical components it is used to modify the molecular structure of the metal.
In the heat treatment the effect of heat allows the metals to enhance the characteristics depending on their use. of different treatment cycles between the heating and cooling phases can enhance the hardness and resistance capacity of the metals used in the precision mechanics.
The heat treatment of metals in precision mechanics has ancient origins that go back at least 4000 years ago when it was already used for the production of spears and knives by the high technological level. By heating a given metal in the presence of acids and chemical solvents capable of generating carbides and nitrides, to then be immersed in water and thus obtain already a primordial quenching technique.
In the mechanical precision of the quenching often it concludes the process of the heat treatment giving the component a hardness that can also be increased by a hundred times compared to the physical properties of the original metal.
Among the most used thermochemical treatments include the carboniturazione, carburizing and galvanizing, all these processes are executed directly from T.M.G. and forming an integral part of the process of realization of the components for the precision mechanics.
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Aluminium cnc machine, the many faces of a ductile and resistant material
Working with a Aluminium cnc machine means subjecting the material to a series of stresses and changes in shape that presuppose that it is ductile and formable to duty. Exactly like aluminum. Aluminium is the most abundant element on Earth, after oxygen and silicon. In nature it is always combined with other elements and is present in many minerals. The industrial production of aluminum from bauxite, or from a rock red brown or yellow, widely promoted in the United States, Russia, Guyana, Hungary and the former Yugoslavia. It is typically machined from aluminum cnc machine, or machines to specific numerical control for this material.
Aluminium has many properties that make it suitable for industrial use, namely: a low specific weight (about a third of that of steel or of alloys of copper), high corrosion resistance, high thermal and electrical conductivity, non-toxic, plasticity, ductility and malleability, low radiating power and excellent weldability. These characteristics change when aluminum is combined with other elements to be worked dall’aluminium cnc machine.
The metal alloys formed by aluminum all have low melting temperatures (between 510 and 650 ° C), low specific weight (between 2,66 and 2,85 g / cm3), high electrical and thermal conductivity.
The various alloys are identified by a serial number of four digits, the first of which indicates the main element of the alloy with the aluminum. The 2000 series, which goes by the trade name Avional has as main alloying element Copper.
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Cnc machining stainless steel: discover the 11SMnPb37 | AVP
A special kind of Cnc machining stainless steel,is the 11SMnPb37 | AVP, suitable for mechanical processing at high speed. The greatest field of its use is the production of small parts, or of mechanical parts for which the end use does not require high mechanical strength. Because of its physical and chemical characteristics (such as the content of sulfur and phosphorus), it is not intended to heat treatment and even recommended for welding.
The Steel 11SMnPb37 | AVP is also said automatic steel and possesses a high index of workability. It is specifically designed to be worked on automatic machines by removal of high-speed chip, such as CNC machining stainless steel. Its sulfur content ensures the chip fragmentation, while the lead reduces the friction between tool and workpiece, extending the life of the tools and allowing the machining stainless steel to achieve the high machining speed. Automatic steel is usually supplied in bars or rolls without heat treatment, although some types can be reclaimed, normalized or annealed before finishing. The bars can have a section comprised between 5 and 100 millimeters.
Areas of client companies
Food
Medical
Hydraulic
Agricultural
Industrial
Pneumatics
Automotive
Furniture
Refrigeration
Plumbing and Heating
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All about milling machine, the heart of precision mechanics
The milling machine is the heart of precision mechanics, a very important tool used in cnc machining services to work into complex shapes metal parts or other materials of spherical shapes.
There are two main types of milling machines, both with a horizontal plane x-y. The first, the vertical, has the engine mounted on a z-axis, for which the movement on three axes allows the machine to make holes or reaming; in that horizontal, instead, the motor is placed on a lateral guide and makes it similar to a large circular saw. It is mainly used to realize slots, grooves and continuous pockets.
In these two types of milling machine are added the so-called “machining centers”, which have a fixed desk, and the motorized head that moves along 4 or more axes.
The CNC milling machines have an accuracy of up to the order of microns (0.001 mm), although they require special working conditions such as an air-conditioned environment, a solid base of support, temperature sensors on the axles, optical guides.
Normally, milling machines are very solid, because they have to absorb the vibrations generated by motorized head without losing precision, why, when performing work on very hard materials or at very high speeds using special lubricants to optimize the cooling of the tip and to reduce the efforts.
Precision mechanics for industry: discover T.M.G
Precision mechanics is a discipline of mechanics that deals with the production of machine parts for the industrial, agricultural, medical.
One of the machines used for the construction and maintenance of these machines is the lathe. Its history is very old, there are traces from prehistoric times, when it was used to produce vessels.
Of course over the centuries it has been perfected, and today there are several types, specialized for the type of production.
The latest evolution in the field of precision mechanics of the lathe is to numerically controlled, also called CNC lathe (Computer Numerical Control).
It is a machine completely controlled by a computer, in which are inserted the parameters of the workpiece that is to be produced. The machine parts move in totally automatic mode, and the computer, during processing, the signals received by sensors that allow it to monitor the smooth running of the work. If, for any reason (such as tool consumption) sensors detect abnormalities in the production of the piece, the computer makes the necessary corrections during construction. The precision of the pieces obtained with this machine is measured in the order of hundredths or thousandths of a millimeter.
Who’s T.M.G.?
Our company was born in 1996 in the province of Vicenza as a small company of precision machining and, in 2000 the need to have more space for our production, it led us to choose the venue of Zimella, in the province of Verona, where, still today, all the realization of our products happens.
From the beginning we have augmented the machinery and the organic; since there, today, all our products made by the qualified staff are shipped.
We have 20 years of experience in the field of precision mechanical components, but we continue to invest in the technology innovation and in the quality of the final product.
Our company structure it’s composed of Carlo, Luca, Paola Pasqualotto and Agostino Dalla Gassa, all daily engaged with highly responsibility roles inside the company.
Our team, instead, is composed of more than 20 qualified workers in the precision machining coordinated by a head of production and by a head of quality control, both of them always in direct contact withe their own customers.
For any info please contact us: Tel. +39 0442 412271 – info@meccanicatmg.it
Realizing mechanical details with precision CNC machining
CNC machining? The TMG company deals with design and implementation of specific machine components and adapted to different industrial sectors.
TMG uses the latest technology and the help of a park machines of the highest level such as lathes and CNC precision machining and milling machines, allowing the company to produce high-precision mechanical parts for every specific need and in different materials.
For numerical control, or CNC refers to a programmable electronic system that allows a machine to perform a task cyclically, without human intervention. In this way, the machines work at predetermined pace and in a much more fluid, allowing also a considerable rapidity in the performance of designs.
When a company, such as agricultural, needs a particularly high precision mechanic, send a request to our company. TMG, then, creates a technical drawing, where necessary, and produces a basic budget to be submitted to the client. In case of acceptance of the quotation, TMG provvere processing of mechanical part.
TMG follows the creation process step by step, adapting – when possible – their work to the needs of the customer.
Do you need info about CNC precision machining?
Please contact us: tel: +39 0442 412271
Email: info@meccanicatmg.it