Category: cnc machining

CNC Stainless Steel and its implications

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CNC stainless steel is the manufacturing of stainless steel through the use of Computer Numerical Control. The best way to cut stainless steel sheet and plates is by using CNC cutting equipment which can be programmed to modification.

Precision stainless steel machining is used by many companies and is more focused on cutting precision stainless steel parts. There are a couple of things to be considered before cutting CNC stainless steel. They include;

  • Maintain high cutting speed rates. CNC machining equipment require high speed rates cutting to maintain the fine finishes demanded by stainless steel
  • Expect a lot of heat to be released and keep in mind that large tools give too much heat
  • Use lubricants and coolants to counter heat energy produced on the surface of the material
  • Use sharp tools and always have a look out for wear. If it wears, replace it because dull tools cause work hardening and also erosion of the metallic surface.
  • Use high speed rates because the feed rate does not affect heat.

Some of the applications of CNC Stainless steel cold be used for milling processes, countersinking, turning material, drilling metal, counterboring, boring, threading, fine finishing, 3 axis and 4 axis milling and turning, reaming and tapping.

All these processes are used to make rivets, medical gadgets, spacers, shafts, gears, marine Parts, pins, rods, bolts, gears, engine parts, studs, bolts, nuts, handles, , hospital and lab instruments, vehicular parts, pressure tanks, electronic parts and cables

How does CNC Machining Operate?

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CNC (Computer Numerical Control) is a mill that can be instructed what to do by a computer program. Consisting of 3 main components. First, is the mill which has a rotating spindle that can run any number of cutting tools including fly cutters, drills and other examples of end mills. It’s a drill like tool which unlike a drill bit can cut sideways or up (z axis) and down (Y axis). It has a table that moves sideways (x axis). All the (x), (y) and (z) movements are driven by little stepper motors which can be controlled with very tiny and precise increments.

By combining x, y and z movements all at the same time, extremely complex parts can be produced with tolerances in the thousands of an inch range. Additionally there’s a much larger motor that’s responsible for the spindle. All these motors can be made to run slower, faster, backwards, just in any way. There are various add-ons to the machines such as lubricants. You can also control the tool holders by adding a pneumatic gizmo which helps you change tools relatively quickly without tightening or untightening the drawbar which holds tools in this spindle. Addition of enclosures is possible so that the tool won’t splatter all over. You can add a stand, fourth axis tray that accumulates all the waste when you cut. Inside the mill is an electronic control system which tells all four motors what to do controlling speed, direction and movement of the spindle.

What do you mean by Precision CNC Machining?

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CNC Machining is the operation used in the manufacturing industry whereby programmed computers are used to sway machine tools such as mills, routers, welder, lathes, cutters and grinders. CNC is acronym for Computer Numerical Control whereby a code is installed in the computer to command the machine the way it should carry out the work. Precision CNC machining is the process of removing a material from a workpiece with close attention to finishes.

Therefore, put together, Precision CNC machining is the process used to perform a wide variety of manufacturing tasks done with great accuracy.

CNC is everywhere worldwide. The products used on a day-to-day basis and the really complex and experimental designs such as small machine shops, vehicles and aerospace all require complex geometry and they’re being produced in large quantities. CNC basically automated the world. CNC machine operators work in a wide variety of fields. People from all different walks of life, such as collectors or those who like collecting as a hobby and even military personnel, take advantage of the automated benefit brought by using CNC machines to turn raw materials into final products. The machines are accurate, more efficient, time saving and have good safety measures.

Precision CNC machining offers services such as CNC milling, profiling, boring, shafting, radius machining, cutting, levelling, making groves, tapping, grinding and more.

How can I use a Milling Machine?

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It’s without a doubt that the most adaptable machine instrument is the vertical mill milling machine. A mill can be used to flatten, bore, drill, chamfer, profile amongst other things. There are mini mills, mill drills, side mills and vertical mills. Milling machine is made up of a vertically mounted motor and a spindle, a table that can be moved around with good precision and a mount or body keeping everything together. Milling machines employ small cutters such as ball end mills, four flute mills etc. They however can also drive big fly cutters, boring bars, involute gear cutters and other increasingly arcane cutting tools. The mills fit into high precision Kaulitz which mount to the spindle and are capable of making cuts with a very high degree of accuracy.

You can also mount drilling chucks onto the spindles of mills and perform conventional drilling operations. There are many types of milling machines which can prove difficult to choose when deciding which one to buy. The smallest one is the mini mill which is used by people who make models e.g. model steam engines, model railroads etc. Next up is the mill drill, a tool which borrows attributes from both the drill press and full-sized vertical mill. Mill drills will typically have horsepower in the one horsepower range. On the high end you’ll find the vertical mill, sometimes called the Bridgeport which is the company which introduced it in the first place. They weigh several tons and consist of a motor and spindle, body and knee where the table is mounted and have a greater one a half horsepower range.

What importance does aluminium CNC machining have?

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As we know it, Aluminum is categorized in the Group II of metals, which means it can easily lose electrons. Therefore it can be combined easily with other elements to form an alloy. When combusted with oxygen, aluminum forms an extra layer of oxidation (Magnesium Oxide) that gives the metal some layer to prevent it against corroding, rusting and even abrasion.
Group II metals have high electrical and thermal conductivity. Hence this it a good material for heat conductors and electricity conduction in CNC machining apparatus.

For Aluminum CNC machining, there are a number of factors that should be looked into. Because of the sensitivity of it, high speeds should be used when cutting so as to prevent cracking or damage of any kind. Aluminum cuts can be more extensive than stainless steel so cuts should be deep enough to prevent the tool from slipping on the surface. You should use sharp tools every time and in case of a sign of wearing out, replace them. When using Aluminium, you should always maintain a high cutting rate and never back from intensity unless it starts to wear. If it starts to wear, sharp objects are advisable to replace with since dull objects make it hard to bore the metallic surface. As friction will always occur, lubrication is important to cool the heat that the cutting goes out.

Aluminium CNC machining is used for products that require light materials. Some of these could be:

  • Aircraft equipment
  • House appliances especially those that use heat or electric
    conductivity
  • Cables and engine blades

Why are CNC Machining Services better?

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Manufacturing used to be very manual and analog. But due to change of times in technology, it seems like everything is moving towards a digital era. For those die-hard mechanical fans, it may be a bit hard to change and get used to the current wave, but it is always advisable to move forward as things get better and simplified.

CNC Machining is basically the process used in the manufacturing industry whereby machines controlled by computer programs are used to design and make other machine tools. CNC, the acronym for Computer Numerical Control, is the software responsible for collecting data, robotize information and take action according to how it was programmed to.

The computer usually operates on a CAM program. Computer Aided Manufacturing (CAM), is what is used to create the code for the control of the CNC machine. You simply type in your code and adjustments, and simply let the computer and the machine sync and do the work for you.

Due to the machine’s capability of moving through different axes, (x, y and z), linear and rotatory, it is responsible for drilling, cutting, levelling, boring, profiling, shafting amongst other many activities. The CAM software operates on a 3D based computer prototype or model and it is important to understand that the CNC machine does not run under CAM, CAM is just creates the code or acts as the programmer for the computer to follow.

Precision cnc machining and processing of high precision mechanical parts

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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

Cnc machining stainless steel: discover the 11SMnPb37 | AVP

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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

Do you need any info? Contact us: +39 0442 412271 – info@meccanicatmg.it

 

All about milling machine, the heart of precision mechanics

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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

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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