Keltu The Great

  When designing a part for CNC machining, the first question one must ask is: what kind of CNC machine will be used for the part? RapidDirect uses a variety of machines, including standard mills, lathes and 5-axis machining centers, and these different machines are capable of creating different kinds of   CNC machining parts. Let’s look at a standard 3-axis vertical machining center as an example. When designing a part for 3-axis machining, one must consider the function of the machine: the cutting tool moves along three axes but always faces downwards, which naturally limits the kind of cuts the machine can make in the workpiece. If you create a diagonal cavity on the underside of the part, the machine will not be able to cut it unless the part is completely reoriented. This is one of the most important factors to consider when designing CNC parts. If cuts need to be made on the reverse side of the part, the workpiece must be set up again the other way round. If it needs to ...

  CNC Machining – What Is It and Why Do You Need It? CNC machining is a broad manufacturing category that includes many different computer-controlled processes where raw material is selectively removed in exact amounts to produce a near-final shape of parts. That’s why it’s considered subtractive, as opposed to additive manufacturing or 3D printing. Standard CNC machining processes include milling, turning, surface grinding and electrical discharge machining (EDM) although there are other specialized applications. Whenever a machine is digitally controlled there must always be a 3D CAD file of the part design which is used to program the machine’s movements. CNC machining  is used on many common metals such as aluminum, brass, mild and stainless steels, magnesium and titanium. It can also be used on rigid or engineering-grade plastic resins. We employ it every day to make not only finished parts but also tools and dies that are used for plastic injection molding and pressure d...

 Designing for CNC machining Because many common CNC machines — 3-axis milling machines, for example — can only cut downwards, any features that are inaccessible to the downward-facing cutting tool cannot be cut in the normal way. These inaccessible features are known as undercuts. If possible, undercuts should be avoided altogether. However, when they must be included in the part design, there are a few rules to follow to ensure proper part fabrication. Undercuts come in two main varieties: T-slots and dovetails.  cnc machining parts T-slots are horizontal cuts, and T-slot cutting tools therefore utilize horizontal cutting blades fitted to a standard vertical spindle. This allows for a standard 3-axis machine to cut sideways instead of downward, allowing the machine to create horizontal undercuts. Dovetail undercuts involve diagonal angles. To create a dovetail undercut, a dovetail tool with a conical surface is used, and these tools are most commonly found with 45° or 60° an...

  Designing undercuts for CNC machining Because many common CNC machines — 3-axis milling machines, for example — can only cut downwards, any features that are inaccessible to the downward-facing cutting tool cannot be cut in the normal way. These inaccessible features are known as undercuts. If possible, undercuts should be avoided altogether. However, when they must be included in the part design, there are a few rules to follow to ensure proper part fabrication. Undercuts come in two main varieties: T-slots and dovetails.  cnc machining parts T-slots are horizontal cuts, and T-slot cutting tools therefore utilize horizontal cutting blades fitted to a standard vertical spindle. This allows for a standard 3-axis machine to cut sideways instead of downward, allowing the machine to create horizontal undercuts. Dovetail undercuts involve diagonal angles. To create a dovetail undercut, a dovetail tool with a conical surface is used, and these tools are most commonly found with 45...

  Tolerances Tolerances let the manufacturer know how closely a part’s dimensions must match those specified in the design or technical drawing. Tighter tolerances mean the dimensions must be almost exact, while looser tolerances indicate that speed and cost are more important than micrometer-level accuracy. Most  CNC machines  can achieve fairly tight tolerances (± 0.025 mm is standard), but ultra-tight tolerances require more labour and are therefore more expensive. Remember that not all part dimensions demand the tightest tolerances. If a part does not form part of a mechanical system, for example, a matter of micrometers may make little difference to the part’s function. Prototypes, too, can often be CNC machined with fairly loose tolerances, which can then be tightened up for the final part if necessary. Cavities Many CNC machined parts incorporate cavities for mechanical or fitting reasons, or to reduce mass. However, the dimensions of the machine’s cutting tool det...

  Tolerances Tolerances let the manufacturer know how closely a part’s dimensions must match those specified in the design or technical drawing. Tighter tolerances mean the dimensions must be almost exact, while looser tolerances indicate that speed and cost are more important than micrometer-level accuracy. Most  CNC machines  can achieve fairly tight tolerances (± 0.025 mm is standard), but ultra-tight tolerances require more labour and are therefore more expensive. Remember that not all part dimensions demand the tightest tolerances. If a part does not form part of a mechanical system, for example, a matter of micrometers may make little difference to the part’s function. Prototypes, too, can often be CNC machined with fairly loose tolerances, which can then be tightened up for the final part if necessary. Cavities Many CNC machined parts incorporate cavities for mechanical or fitting reasons, or to reduce mass. However, the dimensions of the machine’s cutting tool det...

  Initial considerations When designing a part for CNC machining, the first question one must ask is: what kind of CNC machine will be used for the part? RapidDirect uses a variety of CNG machine parts ,  including standard mills, lathes and 5-axis machining centers, and these different machines are capable of creating different kinds of CNC machined part. Let’s look at a standard 3-axis vertical machining center as an example. When designing a part for 3-axis machining, one must consider the function of the machine: the cutting tool moves along three axes but always faces downwards, which naturally limits the kind of cuts the machine can make in the workpiece. If you create a diagonal cavity on the underside of the part, the machine will not be able to cut it unless the part is completely reoriented. This is one of the most important factors to consider when designing CNC parts. If cuts need to be made on the reverse side of the part, the workpiece must be set up again t...

  Initial considerations When designing a part for CNC machining, the first question one must ask is: what kind of CNC machine will be used for the part? RapidDirect uses a variety of  CNG machine parts,  including standard mills, lathes and 5-axis machining centers, and these different machines are capable of creating different kinds of CNC machined part. Let’s look at a standard 3-axis vertical machining center as an example. When designing a part for 3-axis machining, one must consider the function of the machine: the cutting tool moves along three axes but always faces downwards, which naturally limits the kind of cuts the machine can make in the workpiece. If you create a diagonal cavity on the underside of the part, the machine will not be able to cut it unless the part is completely reoriented. This is one of the most important factors to consider when designing CNC parts. If cuts need to be made on the reverse side of the part, the workpiece must be set up again t...

  What is CNC Milling? CNC milling is a machining process that utilizes computerized controls to manage the movement and operation of multi-point rotary cutting tools. As the tools rotate and move across the surface of the workpiece, they slowly remove excess material to achieve the desired shape and size. The  CNC  process can be broken up into four distinct stages: CAD model design: engineers create a 2D or 3D design of the desired part CAD model conversion to a CNC program: the design is exported into a compatible file format and converted into machine instructions using CAM software CNC milling machine setup: the machine operator prepares the machine and workpiece Milling operation execution: the machine operator initiates the machining program The systems used in CNC milling operations are known as CNC milling machines. They can have a moving workpiece and a stationary rotary tool, a stationary workpiece and a moving rotary tool, or a moving workpiece and rotary tool...

  What is CNC Milling? CNC milling is a machining process that utilizes computerized controls to manage the movement and operation of multi-point rotary cutting tools. As the tools rotate and move across the surface of the workpiece, they slowly remove excess material to achieve the desired shape and size. The  CNC  process can be broken up into four distinct stages: CAD model design: engineers create a 2D or 3D design of the desired part CAD model conversion to a CNC program: the design is exported into a compatible file format and converted into machine instructions using CAM software CNC milling machine setup: the machine operator prepares the machine and workpiece Milling operation execution: the machine operator initiates the machining program The systems used in CNC milling operations are known as CNC milling machines. They can have a moving workpiece and a stationary rotary tool, a stationary workpiece and a moving rotary tool, or a moving workpiece and rotary tool...

  CNC machining is a general term used for a variety of machining applications. “CNC” stands for Computer Numerical Controlled and refers to the programmable feature of the machine, allowing the machine to perform many functions with minimal human control. CNC machining is the fabrication of a component using a CNC controlled machine. The term describes a range of subtractive manufacturing processes where material is removed from a stock workpiece, or bar, to produce a finished component part. There are 5 common types of CNC machining performed by 5 different types of CNC machines. These processes are used in many applications across a spectrum of industries including medical, aerospace, industrial, oil and gas, hydraulics, firearms, etc. A variety of materials can be CNC machined including metal, plastics, glass, composites and wood. CNC machining offers many benefits over machining without CNC programmable capabilities. Significantly reduced cycle times, improved finish...

  CNC machining   is a general term used for a variety of machining applications. “CNC” stands for Computer Numerical Controlled and refers to the programmable feature of the machine, allowing the machine to perform many functions with minimal human control. CNC machining is the fabrication of a component using a CNC controlled machine. The term describes a range of subtractive manufacturing processes where material is removed from a stock workpiece, or bar, to produce a finished component part. There are 5 common types of CNC machining performed by 5 different types of CNC machines. These processes are used in many applications across a spectrum of industries including medical, aerospace, industrial, oil and gas, hydraulics, firearms, etc. A variety of materials can be CNC machined including metal, plastics, glass, composites and wood. CNC machining offers many benefits over machining without CNC programmable capabilities. Significantly reduced cycle times, improved fini...

  CNC machining is a general term used for a variety of machining applications. “CNC” stands for Computer Numerical Controlled and refers to the programmable feature of the machine, allowing the machine to perform many functions with minimal human control. CNC machining is the fabrication of a component using a CNC controlled machine. The term describes a range of subtractive manufacturing processes where material is removed from a stock workpiece, or bar, to produce a finished component part. There are 5 common types of CNC machining performed by 5 different types of CNC machines. These processes are used in many applications across a spectrum of industries including medical, aerospace, industrial, oil and gas, hydraulics, firearms, etc. A variety of materials can be CNC machined including metal, plastics, glass, composites and wood. CNC machining  offers many benefits over machining without CNC programmable capabilities. Significantly reduced cycle times, improved finishes a...

  What Else Can a CNC Machine Do? As plenty of CNC machine video demonstrations have shown, companies use CNC machines to make highly detailed cuts out of metal pieces for industrial hardware products. In addition to the aforementioned machines, you can find several other common pieces of machinery used in CNC manufacturing to produce highly detailed and accurate CNC products. Some of the most common products produced by CNC machines include steel aerospace parts, metal automotive components, wooden decorations and plastic consumer goods pieces. Since these CNC products have unique requirements, CNC machines regularly utilize other tools and components. Check out some of the primary pieces of machinery used within CNC systems: Embroidery machines Wood routers Turret punchers Wire-bending machines Foam cutters Laser cutters Cylindrical grinders 3D printers Glass cutters Since CNC machinery can implement so many other tools and components, you can trust it to produce an almost limitl...

  What Else Can a CNC Machine Do? As plenty of CNC machine video demonstrations have shown, companies use CNC machines to make highly detailed cuts out of metal pieces for industrial hardware products. In addition to the aforementioned machines, you can find several other common pieces of machinery used in CNC manufacturing to produce highly detailed and accurate CNC products. Some of the most common products produced by CNC machines include steel aerospace parts, metal automotive components, wooden decorations and plastic consumer goods pieces. Since these CNC products have unique requirements, CNC machines regularly utilize other tools and components. Check out some of the primary pieces of machinery used within CNC systems: Embroidery machines Wood routers Turret punchers Wire-bending machines Foam cutters Laser cutters Cylindrical grinders 3D printers Glass cutters Since CNC machinery can implement so many other tools and components, you can trust it to produce an almost limitl...

  CNC Machine Programming In CNC manufacturing, machines are operated via numerical control, wherein a software program is designated to control an object. The language behind CNC machining is alternately referred to as G-code, and it’s written to control the various behaviors of a corresponding machine, such as the speed, feed rate and coordination. Basically,  CNC machining  makes it possible to pre-program the speed and position of machine tool functions and run them via software in repetitive, predictable cycles, all with little involvement from human operators. In the CNC machining process, a 2D or 3D CAD drawing is conceived, which is then translated to computer code for the CNC system to execute. After the program is inputted, the operator gives it a trial run to ensure no mistakes are present in the coding. Due to these capabilities, the process has been adopted across all corners of the manufacturing sector, and CNC manufacturing is especially vital in the areas ...

  CNC Machine Programming In CNC manufacturing, machines are operated via numerical control, wherein a software program is designated to control an object. The language behind CNC machining is alternately referred to as G-code, and it’s written to control the various behaviors of a corresponding machine, such as the speed, feed rate and coordination. Basically, CNC machining makes it possible to pre-program the speed and position of machine tool functions and run them via software in repetitive, predictable cycles, all with little involvement from human operators. In the CNC machining process, a 2D or 3D CAD drawing is conceived, which is then translated to computer code for the CNC system to execute. After the program is inputted, the operator gives it a trial run to ensure no mistakes are present in the coding. Due to these capabilities, the process has been adopted across all corners of the manufacturing sector, and CNC manufacturing is especially vital in the areas of metal and...

  OVERVIEW OF CNC MACHINING PROCESS Evolving from the numerical control (NC) machining process which utilized punched tape cards, CNC machining is a manufacturing process which utilizes computerized controls to operate and manipulate machine and cutting tools to shape stock material—e.g., metal, plastic, wood, foam, composite, etc.—into custom parts and designs. While the CNC machining process offers various capabilities and operations, the fundamental principles of the process remain largely the same throughout all of them. The basic CNC machining process includes the following stages: Designing the CAD model Converting the CAD file to a CNC program Preparing the CNC machine Executing the machining operation CAD Model Design The CNC machining process begins with the creation of a 2D vector or 3D solid part CAD design either in-house or by a CAD/CAM design service company. Computer-aided design (CAD) software allows designers and manufacturers to produce a model or rendering of the...