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Encyclopedia > Grinding machine
Rotating abrasive wheel on a bench grinder.

A grinding machine is a machine tool used for producing very fine finishes or making very light cuts, using an abrasive wheel as the cutting device. This wheel can be made up of various sizes and types of stones, diamonds or of inorganic materials. For machines used to reduce particle size in materials processing see grinding. Image File history File links Grinding machine http://www. ... A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by the selective removal of metal. ... A grinding wheel is an expendable wheel that carries an abrasive compound on its periphery. ... This article is about the gemstone. ... Inorganic chemistry is the branch of chemistry concerned with the properties and reactions of inorganic compounds. ... The word grinding can mean many things: Grinding is a manufacturing process that uses friction with a rough surface to wear away or smooth the surface of a work piece - see grinding machine. ...


Construction

The grinding machine consists of a power driven grinding wheel spinning at the required speed (which is determined by the wheel’s diameter and manufacturer’s rating, usually by a formula) and a bed with a fixture to guide and hold the work-piece. The grinding head can be controlled to travel across a fixed work piece or the workpiece can be moved whilst the grind head stays in a fixed position. Very fine control of the grinding head or tables position is possible using a vernier calibrated hand wheel, or using the features of NC or CNC controls. “Vernier” redirects here. ... Numerical control or numerically controlled (NC) machine tools are machines that are automatically operated by commands that are received by their processing units. ... A CNC Turning Center A CNC Milling Machine The abbreviation CNC stands for computer numerical control, and refers specifically to a computer controller that reads G-code instructions and drives the machine tool, a powered mechanical device typically used to fabricate metal components by the selective removal of metal. ...


Grinding machines remove material from the workpiece by abrasion, which can generate substantial amounts of heat; they therefore incorporate a coolant to cool the workpiece so that it does not overheat and go outside its tolerance. The coolant also benefits the machinist as the heat generated may cause burns in some cases. In very high-precision grinding machines (most cylindrical and surface grinders) the final grinding stages are usually set up so that they remove about 2/10000mm (less than 1/100000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible. bb In physics, heat, symbolized by Q, is defined as a form of energy whose absorption raises the temperature of a body, not existing in the transition state, and abstraction of which from the same body lowers its temperature. ... Cutting fluid or coolant is liquid used to cool and lubricate the cutting edges of machine tools and the pieces they are shaping. ... Tolerance in Final Fantasy is an allowance, given as a permissible range, in the nominal dimension or value specification of a manufactured object. ...


Types of grinders

These machines include the

  • Belt grinder, which is usually used as a machining method to process metals and other materials, with the aid of coated abrasives. Sanding is the machining of wood; grinding is the common name for machining metals. Belt grinding is a versatile process suitable for all kind of applications like finishing, deburring, and stock removal
  • Bench grinder, which usually has two wheels of different grain sizes for roughing and finishing operations and is secured to a workbench. It is used for shaping tool bits or various tools that need to be made or repaired. Bench grinders are manually operated.
  • Cylindrical grinder which includes the centerless grinder. A cylindrical grinder may have multiple grinding wheels. The workpiece is rotated and fed past the wheel/s to form a cylinder. It is used to make precision rods.
  • Surface grinder which includes the wash grinder. A surface grinder has a "head" which is lowered, and the workpiece is moved back and forth past the grinding wheel on a table that has a permanent magnet for use with magnetic stock. Surface grinders can be manually operated or have CNC controls.
  • Tool and Cutter grinder and the D-bit grinder. These usually can perform the minor function of the drill bit grinder, or other specialist toolroom grinding operations.
  • Jig grinder, which as the name implies, has a variety of uses when finishing jigs, dies, and fixtures. It's primary function is in the realm of grinding holes and pins. It can also be used for complex surface grinding to finish work started on a mill.

rahul pal Please wikify (format) this article or section as suggested in the Guide to layout and the Manual of Style. ... Please wikify (format) this article or section as suggested in the Guide to layout and the Manual of Style. ... // High stock removal is a technological process with the goal to remove large / substantial amounts of material. ... An electrically driven abrasive wheel (normally a pair of wheels) mounted securely on a pillar or a bench. ... Cylindrical grinders are a class of grinding machines used on the work pieces that are symmetrical about an axis of rotation (e. ... A surface grinder is a machine tool used to provide precision ground surfaces, either to a critical size or for the surface finish. ... A tool and cutter grinder is used to sharpen milling cutters and tool bits along with a host of other cutting tools. ... A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required. ...


See also


An angle grinder is a handheld tool powered by an electric motor, petrol engine or compressed air. ... The subject of optical fabrication and testing spans an enormous range of manufacturing procedures and optical test configurations. ... Diamond tools are cutting tools which contain diamond segments for cutting through a wide variety of materials which other cutting tools cannot. ...

Metalworking:

 Grinding and lapping: Image File history File links Blacksmith-hammer-anvil-50x50. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ...

Abrasive | Angle grinder | Bench grinder | Coated abrasives | Diamond plate | Flick grinder | Grindersparks | Dresser | Grinding machine | Grinding wheel | Jig grinder | Lapping | Emery paper | Spark test | Surface grinder | Tool and Cutter grinder | Whetstone Abrasives are extremely commonplace and are used very extensively in a wide variety of industrial, domestic, and technological applications. ... An angle grinder is a handheld tool powered by an electric motor, petrol engine or compressed air. ... An electrically driven abrasive wheel (normally a pair of wheels) mounted securely on a pillar or a bench. ... Coated abrasives are made of abrasive grains adhered to the surface of flexible or semi-flexible backings such as paper, cloth, vulcanized fiber, plastic films. ... It has been suggested that this article or section be merged into Sharpening stone. ... A flick grinder is a rough and ready surface grinder or tool and cutter grinder, its usage is varied but it may be used where great accuracy is not required, but a machine better than a bench grinder is required. ... Grinder sparks are the debris caused by the rubbing of a piece of metal against a grinder wheel. ... A grinding dresser or wheel dresser is a tool to dress the surface of a grinding wheel. ... A grinding wheel is an expendable wheel that carries an abrasive compound on its periphery. ... A jig grinder is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required. ... Lapping is an abrasive machining operation. ... sheets of sandpaper Sandpaper is a form of paper where an abrasive material has been fixed to its surface; it is part of the coated abrasives family of abrasive products. ... By noting the type of sparks that issue from a piece of steel that has been put to a grinding wheel, one can deduce with some accuracy the type of alloy present (for instance; percentage carbon, vanadium, chromium). ... A surface grinder is a machine tool used to provide precision ground surfaces, either to a critical size or for the surface finish. ... A tool and cutter grinder is used to sharpen milling cutters and tool bits along with a host of other cutting tools. ... A whetstone is a stone used for sharpening knives and other cutting tools and is usually made out of ceramic or a hard mineral such as quartz or novaculite. ...


Metalworking topics:   Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ...

Casting | CNC | Cutting tools | Drilling and threading | Fabrication | Finishing | Grinding | Jewellery | Lathe (tool) | Machining | Machine tooling | Measuring | Metalworking | Hand tools | Metallurgy | Milling | Occupations | Press tools | Smithing | Terminology | Welding Casting may be used to create artistic sculptures Casting is a manufacturing process by which a molten material such as metal or plastic is introduced into a mold, allowed to solidify within the mold, and then ejected or broken out to make a fabricated part. ... A CNC Turning Center A CNC Milling Machine The abbreviation CNC stands for computer numerical control, and refers specifically to a computer controller that reads G-code instructions and drives the machine tool, a powered mechanical device typically used to fabricate metal components by the selective removal of metal. ... a Cutting Tool, in the context of Metalworking is any tool that is used to remove metal from the workpiece by means of shear deformation. ... Drilling is the process of using a drill bit in a drill to produce holes. ... A typical steel fabrication shop Fabrication, when used as an industrial term, applies to the building of machines and structures by cutting, shaping and assembling components made from raw materials. ... Metalworking finishing is the activity of making things out of metal in a skillful manner. ... Amber jewellery in the form of pendants. ... Conventional metalworking lathe In woodturning, metalworking, metal spinning, and glassworking, a lathe is a machine tool which spins a block of material so that when abrasive, cutting, or deformation tools are applied to the block, it can be shaped to produce an object which has rotational symmetry about an axis... A lathe is a common tool used in machining. ... A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by the selective removal of metal. ... The examples and perspective in this article or section may not represent a worldwide view. ... Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ... Metalworking hand tools are hand tools that are used in the metalworking field. ... Metallurgy is a domain of materials science and of materials engineering that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys. ... Endmills for a milling machine. ... It has been suggested that this article or section be merged with Smith (metalwork). ... Power press with a fixed barrier guard A press, or a machine press is a tool used to work metal (typically steel) by changing its shape and internal structure. ... A smith, or metalsmith, is a person involved in the shaping of metal objects. ... This article needs to be wikified. ... Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...

rahul pal


  Results from FactBites:
 
Grinding machine - Wikipedia, the free encyclopedia (548 words)
A grinding machine is a machine tool used for producing very fine finishes or making very light cuts, using an abrasive wheel as the cutting device.
Very fine control of the grinding head or tables position is possible using a vernier calibrated hand wheel, or using the features of NC or CNC controls.
Grinding machines remove material from the workpiece by abrasion, which can generate substantial amounts of heat; they therefore incorporate a coolant to cool the workpiece so that it does not overheat and go outside its tolerance.
grinding machine: Information from Answers.com (708 words)
All grinding machines use a wheel made from one of the manufactured abrasives, silicon carbide or aluminum oxide.
The grinding machine consists of a power driven grinding wheel spinning at the required speed (which is determined by the wheels diameter and manufacturers rating, usually by a formula) and a bed with a fixture to guide and hold the work-piece.
Grinding machines remove material from the workpiece by abrasion which can generate substantial amounts of heat, they therefore incorporate a coolant to cool the workpiece so that it does not overheat and go outside its tolerance, the coolant also benefits the machinist as the heat generated may cause burns in some cases.
  More results at FactBites »

 
 

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