cnc machine

3 Aspects of CNC Machining Parts That You Should Know

“Custom made CNC machining parts involving a variety of plastic and metal materials, quick prototyping or end-user applications, both CNC milling and turning for mirror-like surface finishing and uphold tight tolerance.” This article is from WayKen, if you want to know more about this aspect, you may click here.

1. What is CNC Machining?

Source:roboticsandautomationnews.com

CNC machining refers to a manufacturing process to fabricate simple as well as complex CNC machining parts with miniature dimensions by utilizing pre-programmed computer software. The acronym CNC stands for “Computer Numerical Control” and it is basically a subtractive manufacturing process which removes layers of materials from a workpiece by the numerically controlled program.

Due to its compatibility with a wide variety of materials, CNC machining parts can be made of metals, plastics, wood, glass, foam, composites, and so on. It is an autonomous process that does not require human intervention, thus, it is more accurate, specific, cheap labor cost, and less time-consuming. It is the opposite of the additive manufacturing process (like 3D printing) or mass-replication technique (like injection molding) since it is a subtractive manufacturing method.

2. CNC Machining Material Considerations

The most important feature which enables them to stand out from its competitors is their suitability to a variety of engineering materials including both plastic (PEEK, PC, PE, PTFE, nylon, etc.) and metal (brass, steel, aluminum, etc.).

Plastic:

Engineering plastics or polymers are popular because of their high strength, resilience, toughness, lack of conductivity, resistance to corrosion, color, processing, transparency, and low cost. To manufacture high precision plastic parts, CNC machining of plastics is a very strong candidate. It is the most widespread method to manufacture plastic parts with strict tolerance limits and excellent surface finish. Unlike the injection molding process, in plastic CNC machining, molds are not required, hence it moderates the costs and startup times.

CNC machining of plastics is similar to machining metals however, it requires different cutting speeds, cutting tools, and tool compensation to attain desired surface roughness and tolerances. CNC machined plastics have widespread applications including plastic medical components. Generally, in biomedical devices, they require high precision and geometry. Some examples of such medical devices include anesthetic and therapy components, surgical and dental instruments, catheters, diagnostic devices, cardiac implants, orthopedic, and other implantable devices.

Metals:

Properties of metals are different than those of plastics; they are heavy due to the densely packed structure. Metals can outclass almost all material groups in some specific applications where thinness is critical. CNC machining of metals can provide us tight tolerance, mirror-like surface finish, and complex size and shape. You can get your functional metal parts as quickly as one working day by CNC machining services. The precision offered by CNC machining is the best choice for prototyping and rapid production of small and large metal parts. Among the wide variety of metal materials which are compatible with CNC machining services, Aluminum, Stainless Steel, Brass, Copper, Magnesium, Steel Alloy, and Titanium are most popular and most widely used.

CNC milling parts

Source:thomasnet.com

The most commonly used method to fabricate almost 80% of the plastic parts is the milling parts. However, it is not only limited to plastic products but also used widely for manufacturing metals such as aluminum, stainless steel, brass, titanium, and so on. It is a subtractive technique that removes plastic or metal from the workpiece by a numerically controlled program. Mostly, the milling machines are categorized by their number of axes. A standard CNC milling machine mostly has three axes X, Y, & Z however, to manufacture parts having complex shapes and size, there are now 5-axis, 6-axis milling machines.

It is mostly used to fabricate any rotationally symmetrical shape by removing material from the workpiece very rapidly. Turned parts are often adorned with an excellent surface finishing and it often requires no post-processing.

Typically, a lathe or turning machine is employed for CNC turning parts. It works in a linear motion by feeding the cutting tool along the surface of the rotating workpiece. In doing so, it removes material around the perimeter until the preferred diameter is attained. Some examples of turned parts are cylinder-shaped parts with external and internal structures. By the CNC turning method, almost all kinds of materials can be machined such as all types of steel, aluminum, cast iron, brass, copper, and bronze, along with plastics such as nylon, fiberglass, and PTFE.

3. Tips for Maintaining Tight Tolerances

Another term to express machining tolerance is dimensional accuracy which implies an acceptable variance in a part or cutting tool. In order to obtain high performing parts with maximum quality, tight tolerances are very critical. Here are some tips for holding tight tolerances while manufacturing CNC machining parts:

Source:ogsindustries.com

To select the perfect tool:

We have to be very cautious and wise with the choice of tools for tight tolerances. It is to be ensured that for exceptionally tight tolerances, a specific set of tools including separate ones for roughing and finishing should be used. Furthermore, good quality cutting tools can provide more precision than a dull or blunt head cutting tool.

Warm up the spindle:

A routine warm-up is extremely important for A CNC machine to work at its maximum. It is advised to run the machine for around 15–20 minutes before starting the actual milling procedure. It allows parts of the machine to reach an ideal temperature and will help diminish the effects of thermal expansion during milling.

Effect of the temperature:

For holding tight tolerances, thermal stabilization is one of the most important things. A slender deviation from the ideal temperature can largely influence the dimensions of the parts in various ways. Therefore, it should always be kept in mind to place the machine in a temperature-controlled environment.

Calibration of equipment:

Apart from being extremely cautious on all the above points, a desired level accuracy or precision may not be achieved after the machine is used for a longer period of time. It’s time to calibrate the equipment. It is very natural for the machine to loosen up after being used for thousands of hours and it’s unavoidable. However, calibrating, servicing and annual maintenance can keep a fitted leash on the machine precision.

In Conclusion

CNC machining of plastic and metal parts stands out from all other manufacturing processes available in the industry for its diversity, precision, and comparatively faster process. Almost any type of plastic or metal part can be fabricated by the CNC milling or turning process with strict tolerances if the machine is operated and maintained carefully.

How to Build Your Own CNC Router – A 2020 DIY Guide

CNC machines have been around for quite some time and they were first presented to the public all the way back in the 1950s. During that era, these devices basically transformed how we manufacture specific items. They have also helped with various processes, which in return, allowed engineers all over the globe to create products by themselves.

If you are thinking about building your own, DIY CNC router, you might find this article to be quite helpful. The text below is going to feature a guide for making a CNC router, as well as some things that you might want to consider before you start your project. Let’s take a closer look at the guide:

What Should I Consider Before Starting The Project?

The most difficult thing that you might come across is determining where you should start. Now, before you start comparing various parts and kits, there are some questions that you should ask yourself first. The questions that you need to answer before starting your project include:

  1. What Will I Make With The Device? – The first thing you should know is that these machines are quite versatile and naturally, they can create various items. But, different types will be better for different things. Hence, you should start by determining what you will make with the CNC tool. By knowing this, you can also learn what pieces you might need to make it.

 

  1. How Much Time Should I Spend Building it? – The answer to this question will depend on whether you are interested in making this machine for a hobby or profit. Of course, you should spend as much time as you can work on it, but, this is not the only thing to consider. If it is your first time building something like this, you should start smaller and simpler. Hence, you’ll be able to do it properly.

 

  1. How Much Should I Spend on it? – Similarly to the questions and answers above, it will depend on whether you want to use it for a hobby or a business. Of course, it is always best when you get what you paid for. So, you will need to determine what parts you will need for building your device – and if you do not need something, do not buy it!

A Guide For Building A CNC Machine

Source:hackaday.com

You will need a CNC kit is you want to build your machine in an easy and effective way. This happens because the kits come with everything you need to assemble it. Most manufacturers do have optimization features, which means that you can choose the right items that you need. If you want to learn more things about these CNC routers, check out elephant-CNC for additional info.

The Steps You Should Follow When Assembling

  1. Gather The Necessary Components

Of course, the first thing you should do is purchase the necessary parts. The electrical parts that you must get include a processor, stepper drivers & shield, motors, as well as the power supply. Next, choose the mechanical parts such as the tools you will need, the frame, bearing, guides, spacers, washers, nuts, screws, supports, and bolts.

  1. Design How it Will Look Like

By designing the device, you will be able to get a clear picture of how it will look like when it is assembled. You can, for example, start with a sketch and they convert the drawing to CAD by utilizing a program that you feel comfortable with using. This will make everything easier.

  1. Build a Frame

The frame is the most crucial part because it will hold all the parts together. Hence, this is the first thing you should make. Metals such as aluminum are is a good option since they are stable and rigid. Using aluminum can help you boost the longevity of the device, as well as other components.

  1. The Gantry Comes Next

Of course, your machine does not have to feature a gantry, but, it is a quite popular item that people love to add to their DIY CNC device. A gantry is what can allow it to move to the Y-axis, and it will keep it in place above or on your work surface.

  1. Add The Z and the X-axis

The device will move up and down the “Z-axis”, however, you should also have a space that will house the machine. Next, you need to add the bearing and the guide rails which are important parts because they will allow your tool to move up and down the X-axis, which is something that you’’ want it to do.

  1. Add The Drive System And Electrical Parts

Once you are done with the aforementioned things, you will need to make it move. Hence, you should add the drive system, which is usually created from various components, including a motor, pulley, screws, bolts, nuts, as well as the spindles that you will need for your machine.

When you finish with the drive system, it is time to add the electronic parts. Of course, the most important thing is the motor, and then the PSU, rivers, the processor, and the breakout board. Additionally, add the tabletop on, because it will hold the components together. It can be made from basically any material including wood, metal, as well as MDF.

Source:woodworkingnetwork.com
  1. Opt For a Controller And Program

The last thing on your list is the controller and program that you will use. The controller will spread signals that are provided by your computer and processor and then transmits them to signals to the electronic parts. By now, the machine is almost operation. The last thing you should do is choose the program that will make your CNC machine operational.

Conclusion

As you can see, it is not that difficult to assemble and build your own CNC machine. And, by following the tips and steps from the article above, you’ll be able to make the process of building a CNC machine easier, less time-consuming, as well as less expensive. So, now that you know what you should do, do not waste any more time. Instead, start answering the aforementioned questions and start building a machine that will allow you to do wonders.

The Importance Of CNC Machining Services

We take products from granted and don’t understand the process that the same goes through when manufactured. Whether we are talking about medical, agricultural, or constructional products all, go through a complicated manufacturing process that includes the use of a lot of machines. And one of the most important ones has to be the CNC machines or the so-called computer numerical control equipment. For those of you that don’t know here are included different machines such as drills, cutters, routers, rollers and similar type of equipment that can be controlled by a computer and greatly increases the precision than if done by hand.

As mentioned above the CNC machining services have a huge role in manufacturing and benefit the companies in numerous ways. All the products are made much faster and without the risk of precision errors. Along with that, these are much more adaptable, and designers can set the machines to work right according to their specifications. Saying this, CNC has been a part of almost all industries out there.

Let’s take a look at the huge impact that the invention of CNC machining has made, and how to know a good company providing machining services.

Img source: precisionmetalgroup.com

All The Industries CNC Has An Impact ON

 When it comes to the use of the same the Rapid CNC Prototype China Machining Services, have to be one of the best on the market, providing fast and precise work for a modest price. And the same has had a huge impact on numerous industries. First of all the automobile industry benefits out of CNC equipment as these machines are highly responsible for many parts that a vehicle contains. In these are included frames as well as identical components that a car needs such as bearing caps, housings, axels, and even the carburetor. On the other hand, the medical industry relies on it as well. Scalpels, plastic products and all items that are needed for operating equipment are produced by CNC machining services.

Along with that, the construction industry has its reliance on this equipment as well, and the CNC produce a lot of uniformed studs, tools as well as screws and nails. Fast, and accurate is what makes these machines so good. And last but not least is the agriculture industry for which the CNC machines can produce garden tools, blades as well as any needed heavy equipment.

Img source: solidcam.com

How To Know A Good CNC Machining Services Company

 With the popularity of these machines rising there are multiple companies offering CNC Machining Services out there, and that is why it ain’t that easy to know a good one. Still, there are a few factors you should consider, and the Art machining one caught our eyes offering a good service at a modest price. First of all, a company should offer numerous services with die casting, laser casting, metal stamping as well as plastic injection molding included. Saying this, the company you are hiring shouldn’t specialize only in one industry but in numerous because that shows that it is flexible and has good equipment to offer.

The industries covered should be medical, energy, food processing as well as the electronics industry. One of the most important types of services that a company should offer is the milling and turning prototype services. The Art machining provides a variety of different material prototype parts such as aluminum, copper as well as plastics and stainless steel. This type of service is cost-effective and comes with a minimal possibility for an error. And the great thing is that all your needs are fulfilled in a rapid time frame. From the moment of order, it takes no more than a few days to have your parts or products done. Last but not least in case something goes wrong there is a 24/7 customer support team to solve it!

Img source: tpitexas.com

Summary

No matter what type of an industry you are in the CNC machining services have a huge impact, and you might reap many benefits out of the same. Thus hiring a good CNC services agency is crucial and following our advice, you shouldn’t have a problem doing so!