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Rubber molding is a molding process that produces a useable rubber product. Rubber products are made from uncured rubber or elastomers. An elastomer is any material with sufficient resilience or memory for returning to its original shape in response to pressure or distortions. Rubber and elastomers can be derived from natural sources, although they are mostly synthetic, produced through highly controlled chemical processes. Rubber is an excellent material for situations that require a material to expand and return to its original shape. Specific industries that benefit from custom molded rubber are automobile, appliance controls, lawn and garden, sporting goods, medical, electrical, government and recreational. These industries and others benefit from many different products that can be created with this process.

Rubber molding creates molded rubber parts by pressing a block of rubber into a Rubber moldingmetal cavity. The rubber is then exposed to heat, activating a chemical reaction. While there are variations in specific methods, all rubber manufacturers use heat and pressure method to form molded rubber products. The three most common methods in the rubber molding process are injection molding, compression molding and transfer molding. They all involve pouring liquid rubber material into a mold where it is cured in an oven and cooled. Some examples of molded rubber parts include rubber grommets, tubes, shock mounts, stoppers, hoses, bumpers, washers, gasket and seals. Foam rubber goods are also significant due to their many applications.

It is better to incorporate the following rubber molding design guidelines while doing so.
?    Sharp corners are allowed as the material is flexible.
?    It is better to avoid overly complex shapes but it can be done for a wide variety of simple or bit complex 2D or 3D shapes.
?    It is mostly suitable for gaskets, hose adapters, o-rings, hydraulics and pneumatics, medical and dental products, geophysics, appliances, electronics, electrical parts, buttons, handles, knobs, appliance housings containers and any other part which requires flexibility.
?    Rubber molding offers many advantages as it is of low cost that leaves behind no gate or ejection marks.

At eMachineShop, we have revolutionised the art of making custom-made machine parts. It is a remarkable new way to get the custom parts you need for cars, bikes, aircraft, musical instruments, watercraft, optical devices, sensors, models, nameplates, electronic devices, enclosures, clocks, machinery and many more. It is easy to use, comes with free design software along with instant expert help and is cost effective and very convenient as you can do everything from the comfort of your house.

For more information on our Rubber molding  process, CNC moulding, CNC machine, and >plastic molding, please visit us at www.emachineshop.com.

Plasma? CNC router?

CNC Turning process is a simple method of shaping a metal or wood on a lathe. It is a machine tool that spins or turns a block of material to achieve rotational symmetry in a machine shop. Turning can be done manually or using a CNC machining. The computer numerically controls CNC machine. A typical CNC machining center is designed to remove material using a rotating cutter that moves laterally to a work piece mounted onto a table or fixture.

In the CNC turning process, a piece of material is rotated on the lathe and a cutting tool is traversed along two axis of motion, transverse or longitudinal. The process is done in a machine shop. The cutting tool is used until the required depth and dimension is achieved. Turning can be on both sides, inside or outside as per the needs and specifications. The rotation occurs at the turning center that enables control of tool motion through computer programs that use numeric data. Parts that are too large to balance and cause difficulty in rotating around one center point, can be worked on a machining center featuring a U axis. The turning length is about 1000mm between centers and has a drive power and speed range up to 46kW and 4,000 revolution/minute respectively.

CNC turning process cuts the metal into various different shapes ranging from plain surface, taper ends, contour, and filter to radius profiles and threaded surfaces. These cut and turned metal pieces are used to create shafts, rods, hubs, bushes, pulleys and much more. Many industries also use it for fabricating parts and materials that have circular cross section. The process applies well to the most rigid materials that can be controlled exclusively with the software program tooling. The process does reduce the cost of production but on the other end, it limits the design flexibility.

CNC turning machines are said to deliver components at a faster production rate with optimum manufacturing accuracy. The automation of the CNC turning process allows reaching tight dimensional tolerances in every piece. Other advantages are high level of parts consistency or uniformity, achievement of optimum cycle times for all components and faster execution of larger volume. As machines have brought a revolution in the industrial world, new technologies provided by emachineshop, boost the use of metal products.

Computer Numerical Control (CNC) Milling is a common type of automated machining process. These machines are specially used for drilling, facing, and turning functions. Their classification is based on the number of axes they have. These axes are labeled as x and y for the two horizontal directions while z is for vertical movement. CNC milling is a cutting process that is used to remove metal or plastic from a block of stock material by the rotating action of the tool. The tool is moved in three (or more) directions to get the desired cut of the material.

CNC Milling machines have been programmed with the help of a set of commands called G-codes. These codes are special CNC functions in alphanumeric format.

The cutting tool is usually rotated along the axis, which is perpendicular to the table where the material to be cut is placed. There are different cutter shapes (called milling bits) such as round (ball end), square, and angled.

Advantages of CNC Milling

A large variety of 2D and 3D shapes are possible. Complex shapes from rod, block, or sheet material can be created and is cost effective for short runs.

Specifications for CNC Milling

? Rigid materials such as metals and hard plastics are used.

? Alternative machines for 2D sheet shapes that include Laser Cut, Turret Punch and fixed punch are used.

? CNC Milling requires software program tooling or work holding jigs.

? To contain costs avoid large variations in work piece height and avoid thin walls.

The CNC Machining centers are computer controlled vertical mills which can move the spindle along the Z-axis. When the machine is used in combination with conical tools or a ball nose cutter it improves the milling precision without affecting the speed thus providing an economical substitute to flat surface job that requires hand engraving.

During the milling process pressure is applied to the material therefore it is better to avoid weak shapes, long thin shapes, or ones with thin walls. CNC milling offers a cut surface that has a visible pattern due to the rotation and movement of the cutter.

eMachineShop offers you information about a vast number of products and machines and CNC Milling machine is one of them. A unique online CMC provider allows you to design and even order custom CNC machined parts. Visit the site www.eMachineShop.com to get details about these and other services. While you?re there, don?t forget to download the company?s free 3D CAD software which makes designing CNC milled parts a snap!

CNC milling finds application making a wide range of custom parts. CNC milling is a cutting process in which material is removed from a block metal or plastic by a rotating tool. In CNC milling the cutting tool (called a ?mill?) is moved in all three dimensions to cut a desired shape from stock.

In this process, the material is usually removed by both the end and the side of the cutting tool. Unlike a drill which removes material only from the end, in CNC milling the cutting tool rotates about an axis that is perpendicular to the table that holds the work. Cutting tools of various profile shapes are available including square, rounded, and angled. A wide variety of part shapes and geometries are possible. The most common are the ?end mill? which finishes to a flat bottom surface while a ?ball mill? has a rounded end.

A wide variety of 2D and 3D shapes are possible in the process. Some of the examples of CNC milling are engine components, custom jigs and mold tooling, complex mechanisms, enclosures, etc.

The thing CNC Milling does especially well is create complex shapes block material. While CNC milling can be used on 2D projects, there are lots of other choices for thin stock. Waterjet cutting and plasma cutting, for example, come to mind. But thick stock, needing metal removed? That?s where CNC milling shines. The CNC Milling process proves to be cost effective for short runs.

In the event you run into large production quantities, then you might wish to consider cast or forged parts.

When you set about designing a new custom part, keep a wide range of cutting machines in mind. Depending upon the production quantity you can model the cost of Laser Cutting, Turret Punch or Fixed punches, and the cast or forge decision.

The easy way to get started making custom CNC parts is to design them in free 3D CAD software available from www.emachineshop.com, the world?s first online machine shop. Once a part is draw, it can be assigned to different machines and prices and deliveries compared. If you like your design, eMachineShop is only too happy to build it for you.