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         CES, the International Consumer Electronics Show, sponsored by the Consumer Electronics Manufacturers Association of the United States, aims to promote the integration of cutting-edge electronic technology and modern life. Held every January in the world famous gambling city - Las Vegas, is the world's largest and most influential consumer electronics technology annual exhibition, is also one of the world's largest consumer technology industry event. The exhibition is highly professional and has a good trade effect. It enjoys a high reputation in the world. Over the years, CES has gathered the best traditional consumer electronics manufacturers and IT core manufacturers, who bring the most advanced technology concepts and products, attracting a large number of high-tech equipment enthusiasts, users and industry audiences. So far, 51 sessions have been held successfully. Condensed into a word, is - "the world's most cattle black science and technology exhibition". We are familiar with apple, IBM, Google, Amazon, Tesla and other world famous enterprises will bring their latest, the most bovine black technology collective appearance. Of course, China, as a big technology country after the fashion, has already become one of the countries with the largest number of exhibitors in CES, such as BAT, Huawei, DJI, Lenovo, Haier and so on are familiar to CES.                                                                                                                                                             The scale of the current CES data is as follows:         The total number of 4,500 exhibitors from 149 countries and regions reached 177,393;More than 300 meetings, 1,100 speakers and 1,200 startups from more than 45 countries;         Focus on the top 11 themes, including 5G and the Internet of Things, advertising, entertainment and content, autonomous driving, blockchain, Health and Care, Home & Home, Immersive Entertainment, Product Design and Manufacturing, Robotics and Machine Intelligence, Sports, Startups, and more.         On such a large scale, the organizers opened the two largest pavilions, LVCC and SANDS EXPO, and rented the pavilions in the WESTGATE Hotel. In addition, there are DESIGN & SOURCE pavilion (mainly for Chinese mainland, Taiwan, China, Hong Kong, China, Korean enterprises), LVCC opposite the open space of GOOGLE and other large companies built independent pavilions. LVCC has the first and second floor, central and north pavilion; SANDS EXPO has the first and second floors. The total exhibition area is 229,988 square meters, which is the largest in the world.

      Recently, David, executive director of the British company that our company cooperated with, and his delegation came to our company for a field visit. Sunny, general Manager of our company, and Kevin, minister of quality department received the visiting party.      In order to let the customer have a more comprehensive understanding of our company's production strength, business philosophy and product quality, accompanied by Kevin, the head of our quality Department, the customer visited the whole casting production process, physical and chemical inspection process, model making and machining workshop in turn. After further understanding of the company's scale strength, research and development ability and product structure, customers expressed their recognition and praise for our company's better casting workshop environment, orderly production process, strict quality control system and advanced processing and inspection equipment. During the visit, the relevant technical staff of the company gave detailed answers to all kinds of questions raised by customers. Their rich professional knowledge and enthusiastic working attitude also left a deep impression on customers.                                                                       After the visit, sunny, the general manager of our company, first explained our company's corporate culture, development history, technical strength, after-sales service system, related cooperation cases and other information to the visiting guests. Then, David and Sunny reviewed the progress of the cooperation project of both parties in the previous year, and discussed in depth about the expansion of cooperation in the future. Through this visit, David has seen the mature technology and production management strength of our company, and he is more assured about the quality of the products produced by our company. At the same time, he is looking forward to deeper and wider cooperation in the future. He hopes to achieve mutual benefit and common development in the future cooperation projects.     Foxron, as a leading precision machinery parts manufacturer, has always focused on the research and development, production and sales of precision machinery parts, and has been committed to actively expanding the European and American overseas markets. Now Foxron's products are as follows: CNC Milling die castings parts, CNC Mchined parts, engineering machinery castings parts,CNC milling, CNC heats sinks etc. have been exported to the United States, Japan, Britain, Germany, Canada, South Korea, Spain and other countries and regions. Our main customers include Caterpillar, GE, Westinghouse Brake, Okuma, Brothers, Hitachi, Doosan, WIA, BIZel, IBCC and other fortune 500 companies and industry leaders.

                       Our European customers recently came to our company for a field visit. Our company's high-quality products and services, solid company qualification and reputation, and good industry development prospects are the important reasons to attract this customer's visit.           On behalf of the company, the general manager of our company extended a warm welcome to the European customers and arranged a careful reception. Accompanied by the main leaders of each department, the European customer visited the production workshop of the company, and carried out the test operation on site under the guidance of relevant technical personnel. Our customers were wowed by the good performance of our equipment. All kinds of questions raised by customers, the company's leaders and related staff are meticulous answers, rich professional knowledge and well-trained working ability, but also left a deep impression on customers.                                                                                        The accompanying personnel introduced in detail the production and processing process of the main equipment of our company, the scope of use of the equipment, the effect of use and other relevant knowledge. After the visit, the person in charge of the company introduced the current development status of the company, as well as the technical improvement of equipment and sales cases in detail.          The customer was deeply impressed by the company's good working environment, orderly production process, strict quality control, harmonious working atmosphere and hard-working staff, and had in-depth discussions with the company's senior management on the future cooperation between the two parties, hoping to achieve complementary win-win and common development in the future cooperation projects!

CNC Milling                         CNC milling, or computer numerical control milling, is a machining process which employs computerized controls and rotating multi-point cutting tools to progressively remove material from the workpiece and produce a custom-designed part or product. This process is suitable for machining a wide range of materials, such as metal, plastic, glass, and wood, and producing a variety of custom-designed parts and products.Several capabilities are offered under the umbrella of precision  CNC machining services, including mechanical, chemical, electrical, and thermal processes. CNC milling is a mechanical machining process along with drilling, turning, and a variety of other machining processes, meaning that material is removed from the workpiece via mechanical means, such as the actions of the milling machine’s cutting tools.   This article focuses on the CNC milling process, outlining the basics of the process, and the components and tooling of the CNC milling machine. Additionally, this article explores the various milling operations and provides alternatives to the CNC milling process.                                                                                                                                                     Milling Definition          What is milling? It's is a type of machining that uses cutters to shape a workpiece, often on a moveable tabletop, although some milling machines also feature movable cutters. Milling started out as a manual task performed by humans, but most milling these days is done by a CNC mill, which utilizes a computer to oversee the milling process. CNC milling offers higher precision, accuracy, and production rates, but there are still some situations when manual milling comes in useful. Manual milling, which requires a lot of technical skill and experience, offers shorter turnaround times. It also has the added benefit that manual mills are cheaper and the user doesn’t need to worry about programming the machine.Overview of CNC Milling Process           Like most conventional mechanical CNC machining processes, the CNC milling process utilizes computerized controls to operate and manipulate machine tools which cut and shape stock material. In addition, the process follows the same basic production stages which all CNC machining processes do, including:1.Designing a CAD model2.Converting the CAD model into a CNC program3.Setting up the CNC milling machine4.Executing the milling operation         The CNC milling process begins with the creation of a 2D or 3D CAD part design. Then the completed design is exported to a CNC-compatible file format and converted by CAM software into a CNC machine program which dictates the actions of the machine and the movements of the tooling across the workpiece. Before the operator runs the CNC program, they prepare the CNC milling machine by affixing the workpiece to the machine’s work surface (i.e., worktable) or workholding device (e.g., vise), and attaching the milling tools to the machine spindle. The CNC milling process employs horizontal or vertical CNC-enabled milling machines—depending on the specifications and requirements of the milling application—and rotating multi-point (i.e., multi-toothed) cutting tools, such as mills and drills. When the machine is ready, the operator launches the program via the machine interface prompting the machine to execute the milling operation.       Once the CNC milling process is initiated, the machine begins rotating the cutting tool at speeds reaching up to thousands of RPM. Depending on the type of milling machine employed and the requirements of the milling application, as the tool cuts into the workpiece, the machine will perform one of the following actions to produce the necessary cuts on the workpiece:1.Slowly feed the workpiece into the stationary, rotating tool2..Move the tool across the stationary workpiece3..Move both the tool and workpiece in relation to each otherAs opposed to manual milling processes, in CNC milling, typically the machine feeds moveable workpieces with the rotation of the cutting tool rather than against it. Milling operations which abide by this convention are known as climb milling processes, while contrary operations are known as conventional milling processes.Generally, milling is best suited as a secondary or finishing process for an already machined workpiece, providing definition to or producing the part’s features, such as holes, slots, and threads. However, the process is also used to shape a stock piece of material from start to finish. In both cases, the milling process gradually removes material to form the desired shape and form of the part. First, the tool cuts small pieces—i.e., chips—off the workpiece to form the approximate shape and form. Then, the workpiece undergoes the milling process at much higher accuracy and with greater precision to finish the part with its exact features and specifications. Typically, a completed part requires several machining passes to achieve the desired precision and tolerances. For more geometrically complex parts, multiple machine setups may be required to complete the fabrication process.Once the milling operation is completed, and the part is produced to the custom-designed specifications, the milled part passes to the finishing and post-processing stages of production.CNC Milling Machine Operations                                                                         Examples of tooling for milling machine operations, including cutters, drills, and broaching bits.           CNC milling is a machining process suitable for producing high accuracy, high tolerance parts in prototype, one-off, and small to medium production runs. While parts are typically produced with tolerances ranging between +/- 0.001 in. to +/- 0.005 in., some milling machines can achieve tolerances of up to and greater than +/- 0.0005 in. The versatility of the milling process allows it to be used in a wide range of industries and for a variety of part features and designs, including slots, chamfers, threads, and pockets. The most common CNC milling operations include:1.Face milling2.Plain milling3.Angular milling4.Form millingFace Milling           Face milling refers to milling operations in which the cutting tool’s axis of rotation is perpendicular to the surface of the workpiece. The process employs face milling cutters which have teeth both on the periphery and tool face, with the peripheral teeth primarily being used for cutting and the face teeth being used for finishing applications. Generally, face milling is used to create flat surfaces and contours on the finished piece and is capable of producing higher quality finishes than other milling processes. Both vertical and horizontal milling machines support this process.Types of face milling include end milling and side milling, which use end milling cutters and side milling cutters, respectively.Plain Milling             Plain milling, also known as surface or slab milling, refers to milling operations in which the cutting tool’s axis of rotation is parallel to the surface of the workpiece. The process employs plain milling cutters which have teeth on the periphery that perform the cutting operation. Depending on the specifications of the milling application, such as the depth of the cut and the size of the workpiece, both narrow and wide cutters are used. Narrow cutters allow for deeper cuts, while wider cutters are used for cutting larger surface areas. If a plain milling application requires the removal of a large amount of material from the workpiece, the operator first employs a coarse-toothed cutter, slow cutting speeds, and fast feed rates to produce the custom-designed part’s approximate geometry. Then, the operator introduces a finer toothed cutter, faster cutting speeds, and slower feed rates to produce the details of the finished part.Angular Milling          Angular milling, also known as angle milling, refers to milling operations in which the cutting tool’s axis of rotation is at an angle relative to the surface of the workpiece. The process employs single-angle milling cutters—angled based on the particular design being machined—to produce angular features, such as chamfers, serrations, and grooves. One common application of angular milling is the production of dovetails, which employs 45°, 50°, 55°, or 60° dovetail cutters based on the design of the dovetail.Form Milling           Form milling refers to milling operations involving irregular surfaces, contours, and outlines, such as parts with curved and flat surfaces, or completely curved surfaces. The process employs formed milling cutters or fly cutters specialized for the particular application, such as convex, concave, and corner rounding cutters. Some of the common applications of form milling include producing hemispherical and semi-circular cavities, beads, and contours, as well as intricate designs and complex parts with a single machine setup.Other Milling Machine Operations         Besides the aforementioned operations, milling machines can be used to accomplish other specialized milling and machining operations. Examples of the other types of milling machine operations available include:Straddle milling: Straddle milling refers to milling operations in which the machine tool machines two or more parallel workpiece surfaces with a single cut. This process employs two cutters on the same machine arbor, arranged such that the cutters are at either side of the workpiece and can mill both sides at the same time.  Gang milling: What is gang milling? Gang milling refers to milling operations which employ two or more cutters—typically of varying size, shape, or width—on the same machine arbor. Each cutter can perform the same cutting operation, or a different one, simultaneously, which produces more intricate designs and complex parts in shorter production times.Profile milling: Profile milling refers to milling operations in which the machine tool creates a cut path along a vertical or angled surface on the workpiece. This process employs profile milling equipment and cutting tools which can be either parallel or perpendicular to the workpiece’s surface.Gear cutting: Gear cutting is a milling operation which employs involute gear cutters to produce gear teeth. These cutters, a type of formed milling cutters, are available in various shapes and pitch sizes depending on the number of teeth necessary for the particular gear design. A specialized lathe cutter bit can also be employed by this process to produce gear teeth.Other machining processes: Since milling machines support the use of other machine tools besides milling tools, they can be used for machining processes other than milling, such as drilling, boring, reaming, and tapping.CNC Milling Equipment and Components         The CNC milling process employs a variety of software applications, machine tools, and milling machinery depending on the milling operation being performed.CNC Mill Support Software         Like most CNC machining processes, the CNC milling process uses CAD software to produce the initial part design and CAM software to generate the CNC program which provides the machining instructions to produce the part. The CNC program is then loaded to the CNC machine of choice to initiate and execute the milling process.CNC Milling Machine Components         Despite the wide range of milling machines available, most machines largely share the same basic components. These shared machine parts include the:1.Machine interface2.Column3.Knee4.Saddle5.Worktable6.Spindle7.Arbor8.Ram9.Machine toolFigure 1 – CNC Milling Machine Configurations and Components                                                                      Machine interface: The machine interface refers to the machine component the operator uses to the load, initiate, and execute the CNC machine program.Column: The column refers to the machine component which provides support and structure to all other machine components. This component includes an affixed base and can include additional internal components which aid the milling process, such as oil and coolant reservoirs.Knee: The knee refers to the adjustable machine component which is affixed to the column and provides support to the saddle and worktable. This component is adjustable along the Z-axis (i.e., able to be raised or lowered) depending on the specifications of the milling operation.Saddle: The saddle refers to the machine component located on top of the knee, supporting the worktable. This component is capable of moving parallel to the axis of the spindle, which allows the worktable, and by proxy the workpiece, to be horizontally adjusted.Worktable: The worktable refers to the machine component located on top of the saddle, which the workpiece or workholding device (e.g., chuck or vise) is fastened. Depending on the type of machine employed, this component is adjustable in the horizontal, vertical, both, or neither direction.  Spindle: The spindle refers to the machine component supported by the column which holds and runs the machine tool (or arbor) employed. Within the column, an electric motor drives the rotation of the spindle.Arbor: The arbor refers to the shaft component inserted into the spindle in horizontal milling machines in which multiple machine tools can be mounted. These components are available in various lengths and diameters depending on the specifications of the milling application. The types of arbors available include standard milling machine, screw, slitting saw milling cutter, end milling cutter, and shell end milling cutter arbors.Ram: The ram refers to the machine component, typically in vertical milling machines, located on top of and affixed to the column which supports the spindle. This component is adjustable to accommodate different positions during the milling operation.Machine tool: The machine tool represents the machine component held by the spindle which performs the material removal operation. The milling process can employ a wide range of milling machine tools (typically multi-point cutters) depending on the specifications of the milling application—e.g., the material being milled, quality of the surface finish required, machine orientation, etc. Machine tools can vary based on the number, arrangement, and spacing of their teeth, as well as their material, length, diameter, and geometry. Some of the types of horizontal milling machine tools employed include plane, form relieved, staggered tooth, and double angle mills, while vertical milling machine tools employed include flat and ball end, chamfer, face, and twist drill mills. Millings machines can also use drilling, boring, reaming, and tapping tools to perform other machining operations.Milling Machine Considerations           In general, milling machines are categorized into horizontal and vertical machine configurations, as well as differentiated based on the number of axes of motion.In vertical milling machines, the machine spindle is vertically oriented, while in horizontal milling machines the spindle is horizontally oriented. Horizontal machines also employ arbors for additional support and stability during the milling process, and have support capabilities for multiple cutting tools, such as in gang milling and straddle milling. Controls for both vertical and horizontal milling machine are dependent on the type of machine employed. For example, some machines can raise and lower the spindle and laterally move the worktable, while other machines have stationary spindles and worktables which move both horizontally, vertically, and rotationally. When deciding between vertical and horizontal milling machines, manufacturers and job shops must consider the requirements of the milling application, such as the number of surfaces requiring milling and the size and shape of the part. For example, heavier workpieces are better suited for horizontal milling operations, while die sinking applications are better suited for vertical milling operations. Ancillary equipment that modifies vertical or horizontal machines to support the opposing process is also available.   Most CNC milling machines are available with 3 to 5 axes— typically providing performance along the XYZ axes and, if applicable, around rotational axes. The X-axis and Y-axis designate horizontal movement (side-to-side and forward-and-back, respectively, on a flat plane), while the Z-axis represents vertical movement (up-and-down) and the W-axis represents diagonal movement across a vertical plane. In basic CNC milling machines, horizontal movement is possible in two axes (XY), while newer models allow for the additional axes of motion, such as 3, 4, and 5-axis CNC machines. Table 1, below, outlines some of the characteristics of milling machines                                                                                      Table 1 – Characteristics of Milling Machines by Axes of Motion Note 1: If applicable, “A” indicates advantageous characteristics and “D” indicates disadvantageous characteristic.Note 2: Some milling machineNumber of AxesCharacteristics3Capable of managing most machining needsCapable of producing the same products as machines with more axesSuitable for automatic or interactive operation, cutting sharp edges, drilling holes, milling slots, etc.Simplest machine setup (A)Only requires one workstation (A)Higher knowledge requirements for operators (D)Lower levels of efficiency and quality (D)4Capable of operating on materials ranging from aluminum and composite board to foam, PCB, and woodSuitable for advertising design, art creating, medical equipment creating, technology research, hobby prototype building, and industrial applicationsGreater functionality than 3-axis machines (A)Higher levels of precision and accuracy than 3-axis machines (A)More complex machine setup 3-axis machines (D)More expensive than 3-axis machines (D)5Multiple axes configurations available (e.g., 4+1, 3+2, or 5)Suitable for aerospace, architectural, medical, military, oil and gas, and artistic and functional applicationsGreatest functionality and capabilities (A)Depending on config., faster operation than 3-axis and 4-axis machines (A)Highest levels of quality and precision (A)Depending on config., slower operation than 3-axis and 4-axis machines (D)More expensive than 3-axis and 4-axis machines (D)         Depending on the type of milling machine employed, the machine tool, the machine worktable, or both of the components can be dynamic. Typically, dynamic worktables move along the XY-axes, but they are also capable of moving up and down to adjust the depth of cut and swiveling along the vertical or horizontal axis for an increased range of cutting. For milling applications requiring dynamic tooling, in addition to its inherent rotary motion, the machine tool moves perpendicularly along multiple axes, allowing the tool’s circumference, rather than just its tip, to cut into the workpiece. CNC milling machines with greater degrees of freedom allow for greater versatility and complexity in the milled parts produced.Types of Milling Machines          There are several different types of milling machines available which are suitable for a variety of machining applications. Beyond classification based solely on either machine configuration or the number of axes of motion, milling machines are further classified based on the combination of their specific characteristics. Some of the most common types of milling machines include:1.Knee-type2.Ram-type3.Bed-type (or manufacturing-type)4.Planer-typeKnee-type: Knee-type milling machines employ a fixed spindle and vertically adjustable worktable which rests on the saddle supported by the knee. The knee can be lowered and raised on the column depending on the position of the machine tool. Some examples of knee-type milling machines include floor-mounted and bench-type plain horizontal milling machines.Ram-type: Ram-type milling machines employ a spindle affixed to a movable housing (i.e., ram) on the column, which allows the machine tool to move along the XY axes. Two of the most common ram-type milling machines include floor-mounted universal horizontal and swivel cutter head milling machines.  Bed-type: Bed-type milling machines employ worktables affixed directly to the machine bed, which prevents the workpiece from moving along both the Y-axis and Z-axis. The workpiece is positioned beneath the cutting tool, which, depending on the machine, is capable of moving along the XYZ axes. Some of the bed-type milling machines available include simplex, duplex, and triplex milling machines. While simplex machines employ one spindle which moves along either the X-axis or Y-axis, duplex machines employ two spindles, and triplex machines employ three spindles (two horizontal and one vertical) for machining along the XY and XYZ axes, respectively.Planer-type: Planer-type milling machines are similar to bed-type milling machines in that they have worktables fixed along the Y-axis and Z-axis and spindles capable of moving along the XYZ axes. However, planer-type machines can support multiple machine tools (typically up to four) simultaneously, which reduces the lead time for complex parts.Some of the specialized types of milling machines available include rotary table, drum, and planetary milling machines. Rotary table milling machines have circular worktables which rotate around the vertical axis and employ machine tools positioned at varying heights for roughing and finishing operations. Drum milling machines are similar to rotary table machines, except the worktable is referred to as a “drum” and it rotates around the horizontal axis. In planetary machines, the worktable is stationary, and the workpiece is cylindrical. The rotating machine tool moves across the surface of the workpiece cutting internal and external features, such as threads. Material Considerations         The CNC milling process is best suited as a secondary machining process to provide finishing features to a custom-designed part, but can also be used to produce custom designs and specialty parts from start to finish. CNC milling technology allows the process to machine parts of a wide range of materials, including:Metals (including alloy, exotic, heavy duty, etc.)1.Plastics (include thermosets and thermoplastics)2.Elastomers3.Ceramics4.Composites5.GlassAs with all machining processes, when selecting a material for a milling application, several factors must be considered, such as the properties of the material (i.e., hardness, tensile and shear strength, and chemical and temperature resistance) and the cost-effectiveness of machining the material. These criteria dictate whether the material is suitable for the milling process and the budgetary constraints of the milling application, respectively. The chosen material determines the type(s) of the machine tool(s) employed and its/their design(s), and the optimal machine settings, including cutting speed, feed rate, and depth of cut.Alternatives          CNC milling is a mechanical machining process suitable for machining a wide range of materials and producing a variety of custom-designed parts. While the process may demonstrate advantages over other machining processes, it may not be appropriate for every manufacturing application, and other processes may prove more suitable and cost-effective.Some of the other more conventional mechanical machining processes available include drilling and turning. Drilling, like milling, typically employs multi-point tools (i.e., drill bits), while turning employs single-point tools. However, while in turning the workpiece can be moved and rotated similar to that of some milling applications, in drilling the workpiece is stationary throughout the drilling operation.Some of the non-conventional mechanical machining processes (i.e., do not employ machine tools but still employ mechanical material removal processes) include ultrasonic machining, waterjet cutting, and abrasive jet machining. Non-conventional, non-mechanical machining processes—i.e., chemical, electrical, and thermal machining processes—provide additional alternative methods of removing material from a workpiece which do not employ machine tools or mechanical material removal processes, and include chemical milling, electrochemical deburring, laser cutting, and plasma arc cutting. These non-conventional machining methods support the production of more complex, demanding, and specialized parts not typically possible through conventional machining processes.   Summary           Outlined above are the basics of the CNC milling process, various CNC milling operations and their required equipment, and some of the considerations that may be taken into account by manufacturers and machine shops when deciding whether CNC milling is the most optimal solution for their particular machining application.