CLASSIFICATION OF GRINDER II (grinding mill)
Jig grinder
A jig grinder(grinding mill) is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required.
The jig grinder is very similar to a jig borer, in that the table positioning and spindles are very accurate (far more so than a manual milling machine or lathe). It is almost exclusively used by tool and die makers in the creation of jigs or mating holes and pegs on dies. There are usually many peripheral elements to a large jig grinder, including separate hydraulic motors, air compressors, and various cooling systems for both the hydraulic circuit and supplying coolant to the work and machine itself.
The machine operates by a high speed air spindle rotating a grinding bit. The air spindles are removable and interchangeable to achieve varying surface speeds. Some spindles are fixed speed (60000 rpm), others are adjustable (30000-50000 rpm), and still others are very high speed (175000 rpm). The machines have a standard X-Y table with the notable exception of knee travel. All axes are indexed to .0001" via a vernier scale on the handwheels, with higher accuracy available with the use of measuring bars. The machine head has two vertical travels, one rough head adjustment and the other a precise spindle adjustment. The spindle to which the detachable air spindle mounts also rotates at a variable speed and can typically outfeed .100" while running, again with an accuracy of .0001" on the handwheel or greater, for very precise hole, peg and surface grinding. A well-kept jig grinder will reliably position work to a higher degree of accuracy than is possible with handwheels alone. These features are all critical in positioning a hole and peg system a precise distance from a reference surface or edge.
The most important factor on a jig grinder is the dual-spindle configuration. The main spindle is roughly positioned with between 1" or 2" of travel for setup, and then the .100" of outfeed is used during machine operation to outfeed into the work. A spacer bar may be used between the grinder and main spindle, allowing large (9" radius or larger) work to be completed. The main spindle has a wide range of speeds to ensure proper grinder feed rates are maintained.
Grinders (footwear)(grinding mill)
Grinders is a footwear line established in 1965 in the United Kingdom. Famous for their air cushion sole and leather footwear for both men and women, Grinders have become one of the leading "Street Fashion Footwear" brands from the United Kingdom. Utilising some of the best craftsmen in England, Grinders are renowned for welted sole footwear. The sole unit, which is patented to Grinders, is heat sealed to the welt, giving the Grinder footwear range the strength and lasting durability of the Goodyear welt process. The unique air cushion sole enables flexibility and ensures guaranteed long lasting quality to every pair.
Grinders brand boots and shoes have been particularly popular in the UK and eastern Europe, especially among certain subcultures, such as rivetheads and skinheads. Famous musicians who have worn Grinders boots include members of Guns N' Roses, The Prodigy, Funeral Dress and E-17. Like Dr. Martens, Grinders are now made in China unless you buy them from the British Boot Co who have them made especially in Northamptonshire so the Grinder can retain the Made in England stamp.
Wet grinder(grinding mill)
Wet grinders are very popular tools in the South Indian kitchen used to make paste out of soaked grains and lentils. At one time, a wet grinder consisted of a large rock with a pit in it, where a cylindrical rock with a wooden handle fit in. The grain or lentil was poured in with water and the cylinder rotated by the handle on the top to grind it in to paste or batter. The ground paste is used for various food items like idli, dosa, sevai and vada. The evolution of grinders have a dramatic change in the working. The earlier form of wet grinder called "Attu Kallu" used mechanical energy in which the user has to rotate the top stone called "Kullavi" to grind the medium. The invention of electricity has led to the development of electric-powered wet grinders. Mr. Krishnamurthy of Lakshmi Grinders revolutionized the grinders by fitting the motor to it and made it automatic. In his version, the kulavi was connected to the motor. These grinders were used by home based businesses or restaurants only. People took their rice or other grains to these home businesses and got them ground.
The next revolution of the grinders was made possible by Mr. Duraisamy of Santha Grinders. He was thinking about making the grinders compact and more user friendly. He replaced the single kulavi (which was heavy and too cumbersome to clean) with two smaller roller stones. The first model he made worked well except that it was splashing the dough out the grinding vessel. He was thinking hard and one day, he noticed the roller on the water well retaining the water when people drew water. He got the idea and made the roller stones with grooves that kept the dough contained within the vessel and gave good results. Also in his version, the drum was connected to the motor and it rotated.
The next big revolution was created by Mr. L. Varadarajulu of ELGI Ultra grinders. He was thinking why the grinder has to be so bulky and needs a man to clean it. He came up with the Ultra Grind+ grinders where the drum was detachable and the stones were light weight women could handle it easily.
Now Coimbatore is the hub for the wetgrinders and 95% of the wetgrinders made in India are made there. These grinders are also exported to all over the world.
In the original stone grinder, there were dips and bumps and the grains were ground by crushing action. By constant use, the spots where the kulavi meets the attukkal became smooth. This reduced the efficiency of the grinder. One had to hire a person to resurface the stone with chisel and hammer (they came to people's houses and worked on the attukkal as it was too heavy to be transported).
Now the grinders have smooth bottom stone and smooth roller stones. The grains are ground by shearing action or crushing action depending on the manufacturer. And these grinders do not need any resurfacing.
Grinder's Stand(grinding mill)
Grinder's Stand was the stand, or inn, located on the historic Natchez Trace where Meriwether Lewis died. A replica can be visited today at the Meriwether Lewis Park, located on the Natchez Trace Parkway south of Nashville, southwest of Columbia, and east of Hohenwald, Tennessee.
The tavern is believed to have been established in 1807. Its proprietors were Robert Evans Grinder and Priscilla Knight Grinder. The original stand consisted of two rough log cabins adjoined at right angles with a dogtrot between them. Both rooms had doors facing the Natchez Trace; one room also had a door facing the dis-joined kitchen behind the stand. A barn and stable were also located on the property, although the original locations of these two buildings have not been discovered.
According to tradition, Robert Grinder sold whiskey to the Indians, whose lands came within a few feet of the cabin. The proper use of the stand was to provide food and lodging to the travellers of the Natchez Trace.
In the 1930s, the Civilian Conservation Corps built a replica cabin less than twenty feet from the remains of the original stand. The current cabin does not authentically match the design of the original.
Surface grinder
A surface grinder is a machine tool used to provide precision ground surfaces, either to a critical size or for the surface finish.The typical precision of a surface grinder depends on the type and usage, however +/- 0.002 mm (+/- 0.0001") should be achievable on most surface grinders.
The machine consists of a table that traverses both longitudinally and across the face of the wheel. The longitudinal feed is usually powered by hydraulics, as may the cross feed, however any mixture of hand, electrical or hydraulic may be used depending on the ultimate usage of the machine (ie: production, workshop, cost). The grinding wheel rotates in the spindle head and is also adjustable for height, by any of the methods described previously. Modern surface grinders are semi-automated, depth of cut and spark-out may be preset as to the number of passes and once setup the machining process requires very little operator intervention.
Spark out is a term used when precision values are sought and literally means "until the sparks are out (no more)". It involves passing the workpiece under the wheel, without resetting the depth of cut, more than once and generally multiple times. This ensures that any inconsistencies in the machine or workpiece are eliminated.
As with any grinding operation, the condition of the wheel is extremely important. Diamond dressers are used to maintain the condition of the wheel, these may be table mounted or as the first image shows, mounted in the wheel head where they can be readily applied.
The machine has provision for the application of coolant as well as the extraction of metal dust (metal and grinding particles).
Depending on the workpiece material, the work is generally held by the use of a magnetic chuck. This may be either an electromagnetic chuck or a manually operated, both types are shown in the first image.
Flick grinder
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.
Besides the grinding wheel, the machine is hand powered on all axis. The machine may be used to cut die punches to length or to perform grinding operations such as grinding flats or other shapes on punches etc.
Cylindrical Grinder(grinding mill)
Cylindrical grinder is a class of grinding machines used on the work pieces that are symmetrical about an axis of rotation
Types of Cylindrical Grinder
OD grinder
An OD grinder grinds the outer diameter (OD) of the work piece, held on one or both ends. Usually, the work piece is held between centers or chucked and rotated against a faster spinning grinding wheel,great care should be taken as the OD comes closer to finished size as its too easy to over grind the tool.
ID grinder
An ID grinder grinds the inside diameter (ID) of a work piece but usually this tends to be a longer process than OD grinding as the ID grinding stone is smaller and requires the operator to make smaller cuts from the tool to ensure that the ID grind is perfect and to the correct size.
Centerless grinder
A centerless grinder is a type of OD grinder where the workpiece, rather than being supported on either end, is held against the grinding wheel by a second smaller wheel, turning at a slower RPM and known as a regulating wheel, while resting on a workblade.
Bench grinder
A bench grinder or pedestal grinder is a machine used to drive an abrasive wheel (or wheels).
Depending on the grade of the grinding wheel it may be used for sharpening cutting tools such as lathe tools or drill bits. Alternatively it may be used to roughly shape metal prior to welding or fitting.
A Wire brush wheel or buffing wheels can be interchanged with the grinding wheels in order to clean or polish work-pieces.
Organ grinder
The organ grinder was a musical novelty street performer of the 19th century and the early part of the 20th century, and refers to the operator of a street organ.
Period literature often represents the grinder as a gentleman of ill repute or as an unfortunate representative of the lower classes. Newspaper reporters would sometimes describe them cynically or jocularly as minor extortionists who were paid to keep silent, given the repetitious nature of the music. Later depictions would stress the romantic or picturesque aspects of the activity. Whereas some organ grinders were itinerants or vagabonds, many were recent immigrants who chose to be street performers in order to support their families. Those who actually owned their barrel organs were more likely to take care of them and pursue the "profession" more seriously. A few organ grinders still remain, perhaps most famously Joe Bush in the United States.
Angle grinder
An angle grinder is a handheld power tool used for cutting, grinding and polishing.
Angle grinders can be powered by an electric motor, petrol engine or compressed air. The motor drives a geared head at a right-angle on which is mounted an abrasive disc that can be renewed when worn. Angle grinders typically have an adjustable guard and a side-handle for two-handed operation.
Angle grinders may be used both for removing excess material off a piece or simply cutting into a piece. There are myriad different kinds of discs that are used for various materials and tasks, such as cut-off discs (diamond blade), abrasive grinding discs, grinding stones, sanding discs, wire brush wheels and polishing pads. The angle grinder has large bearings to counter side forces generated during cutting, unlike a power drill, where the force is axial.
Angle grinders are widely used in metalworking and construction, as well as in emergency rescues. They are commonly found in workshops, service garages and auto body repair shops. There is a large variety of angle grinders to choose from when trying to find the right one for the job. The most important factors in choosing the right grinder are the disc size and how powerful the motor is. Other factors include power source (pneumatic or electric), rpm's, and arbor size. Generally disc size and power increase together. Disc size is usually measured in inches. Common disc sizes for angle grinders include 4, 4.5, 5, 6, 7, 9 and 12 inches. Discs for pneumatic grinders also come much smaller. Pneumatic grinders are generally used for lighter duty jobs where more precision is required. This is likely because pneumatic grinders can be small yet remain powerful, while it is harder for an electric grinder to maintain adequate power with smaller size. Electric grinders are more commonly used for larger, heavy duty jobs. There are also small electric grinders and large pneumatic grinders.
Meat grinder
A meat grinder or meat mincer is a culinary tool for grinding meat. Several varieties of the tool are available, although most people conjure the image of a hand-powered grinder which is cranked.
Most meat grinders function by forcing the meat against and through small holes as it is cut. They can be run on electricity.
grinding mill machine for industrial.
This contents for reference only, business please go to the official network http://mill.com.tw
CLASSIFICATION OF GRINDER II (grinding mill)
Jig grinder
A jig grinder(grinding mill) is a machine tool used for grinding complex shapes and holes where the highest degrees of accuracy and finish are required.
The jig grinder is very similar to a jig borer, in that the table positioning and spindles are very accurate (far more so than a manual milling machine or lathe). It is almost exclusively used by tool and die makers in the creation of jigs or mating holes and pegs on dies. There are usually many peripheral elements to a large jig grinder, including separate hydraulic motors, air compressors, and various cooling systems for both the hydraulic circuit and supplying coolant to the work and machine itself.
The machine operates by a high speed air spindle rotating a grinding bit. The air spindles are removable and interchangeable to achieve varying surface speeds. Some spindles are fixed speed (60000 rpm), others are adjustable (30000-50000 rpm), and still others are very high speed (175000 rpm). The machines have a standard X-Y table with the notable exception of knee travel. All axes are indexed to .0001" via a vernier scale on the handwheels, with higher accuracy available with the use of measuring bars. The machine head has two vertical travels, one rough head adjustment and the other a precise spindle adjustment. The spindle to which the detachable air spindle mounts also rotates at a variable speed and can typically outfeed .100" while running, again with an accuracy of .0001" on the handwheel or greater, for very precise hole, peg and surface grinding. A well-kept jig grinder will reliably position work to a higher degree of accuracy than is possible with handwheels alone. These features are all critical in positioning a hole and peg system a precise distance from a reference surface or edge.
The most important factor on a jig grinder is the dual-spindle configuration. The main spindle is roughly positioned with between 1" or 2" of travel for setup, and then the .100" of outfeed is used during machine operation to outfeed into the work. A spacer bar may be used between the grinder and main spindle, allowing large (9" radius or larger) work to be completed. The main spindle has a wide range of speeds to ensure proper grinder feed rates are maintained.
Grinders (footwear)(grinding mill)
Grinders is a footwear line established in 1965 in the United Kingdom. Famous for their air cushion sole and leather footwear for both men and women, Grinders have become one of the leading "Street Fashion Footwear" brands from the United Kingdom. Utilising some of the best craftsmen in England, Grinders are renowned for welted sole footwear. The sole unit, which is patented to Grinders, is heat sealed to the welt, giving the Grinder footwear range the strength and lasting durability of the Goodyear welt process. The unique air cushion sole enables flexibility and ensures guaranteed long lasting quality to every pair.
Grinders brand boots and shoes have been particularly popular in the UK and eastern Europe, especially among certain subcultures, such as rivetheads and skinheads. Famous musicians who have worn Grinders boots include members of Guns N' Roses, The Prodigy, Funeral Dress and E-17. Like Dr. Martens, Grinders are now made in China unless you buy them from the British Boot Co who have them made especially in Northamptonshire so the Grinder can retain the Made in England stamp.
Wet grinder(grinding mill)
Wet grinders are very popular tools in the South Indian kitchen used to make paste out of soaked grains and lentils. At one time, a wet grinder consisted of a large rock with a pit in it, where a cylindrical rock with a wooden handle fit in. The grain or lentil was poured in with water and the cylinder rotated by the handle on the top to grind it in to paste or batter. The ground paste is used for various food items like idli, dosa, sevai and vada. The evolution of grinders have a dramatic change in the working. The earlier form of wet grinder called "Attu Kallu" used mechanical energy in which the user has to rotate the top stone called "Kullavi" to grind the medium. The invention of electricity has led to the development of electric-powered wet grinders. Mr. Krishnamurthy of Lakshmi Grinders revolutionized the grinders by fitting the motor to it and made it automatic. In his version, the kulavi was connected to the motor. These grinders were used by home based businesses or restaurants only. People took their rice or other grains to these home businesses and got them ground.
The next revolution of the grinders was made possible by Mr. Duraisamy of Santha Grinders. He was thinking about making the grinders compact and more user friendly. He replaced the single kulavi (which was heavy and too cumbersome to clean) with two smaller roller stones. The first model he made worked well except that it was splashing the dough out the grinding vessel. He was thinking hard and one day, he noticed the roller on the water well retaining the water when people drew water. He got the idea and made the roller stones with grooves that kept the dough contained within the vessel and gave good results. Also in his version, the drum was connected to the motor and it rotated.
The next big revolution was created by Mr. L. Varadarajulu of ELGI Ultra grinders. He was thinking why the grinder has to be so bulky and needs a man to clean it. He came up with the Ultra Grind+ grinders where the drum was detachable and the stones were light weight women could handle it easily.
Now Coimbatore is the hub for the wetgrinders and 95% of the wetgrinders made in India are made there. These grinders are also exported to all over the world.
In the original stone grinder, there were dips and bumps and the grains were ground by crushing action. By constant use, the spots where the kulavi meets the attukkal became smooth. This reduced the efficiency of the grinder. One had to hire a person to resurface the stone with chisel and hammer (they came to people's houses and worked on the attukkal as it was too heavy to be transported).
Now the grinders have smooth bottom stone and smooth roller stones. The grains are ground by shearing action or crushing action depending on the manufacturer. And these grinders do not need any resurfacing.
Grinder's Stand(grinding mill)
Grinder's Stand was the stand, or inn, located on the historic Natchez Trace where Meriwether Lewis died. A replica can be visited today at the Meriwether Lewis Park, located on the Natchez Trace Parkway south of Nashville, southwest of Columbia, and east of Hohenwald, Tennessee.
The tavern is believed to have been established in 1807. Its proprietors were Robert Evans Grinder and Priscilla Knight Grinder. The original stand consisted of two rough log cabins adjoined at right angles with a dogtrot between them. Both rooms had doors facing the Natchez Trace; one room also had a door facing the dis-joined kitchen behind the stand. A barn and stable were also located on the property, although the original locations of these two buildings have not been discovered.
According to tradition, Robert Grinder sold whiskey to the Indians, whose lands came within a few feet of the cabin. The proper use of the stand was to provide food and lodging to the travellers of the Natchez Trace.
In the 1930s, the Civilian Conservation Corps built a replica cabin less than twenty feet from the remains of the original stand. The current cabin does not authentically match the design of the original.
Surface grinder
A surface grinder is a machine tool used to provide precision ground surfaces, either to a critical size or for the surface finish.The typical precision of a surface grinder depends on the type and usage, however +/- 0.002 mm (+/- 0.0001") should be achievable on most surface grinders.
The machine consists of a table that traverses both longitudinally and across the face of the wheel. The longitudinal feed is usually powered by hydraulics, as may the cross feed, however any mixture of hand, electrical or hydraulic may be used depending on the ultimate usage of the machine (ie: production, workshop, cost). The grinding wheel rotates in the spindle head and is also adjustable for height, by any of the methods described previously. Modern surface grinders are semi-automated, depth of cut and spark-out may be preset as to the number of passes and once setup the machining process requires very little operator intervention.
Spark out is a term used when precision values are sought and literally means "until the sparks are out (no more)". It involves passing the workpiece under the wheel, without resetting the depth of cut, more than once and generally multiple times. This ensures that any inconsistencies in the machine or workpiece are eliminated.
As with any grinding operation, the condition of the wheel is extremely important. Diamond dressers are used to maintain the condition of the wheel, these may be table mounted or as the first image shows, mounted in the wheel head where they can be readily applied.
The machine has provision for the application of coolant as well as the extraction of metal dust (metal and grinding particles).
Depending on the workpiece material, the work is generally held by the use of a magnetic chuck. This may be either an electromagnetic chuck or a manually operated, both types are shown in the first image.
Flick grinder
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.
Besides the grinding wheel, the machine is hand powered on all axis. The machine may be used to cut die punches to length or to perform grinding operations such as grinding flats or other shapes on punches etc.
Cylindrical Grinder(grinding mill)
Cylindrical grinder is a class of grinding machines used on the work pieces that are symmetrical about an axis of rotation
Types of Cylindrical Grinder
OD grinder
An OD grinder grinds the outer diameter (OD) of the work piece, held on one or both ends. Usually, the work piece is held between centers or chucked and rotated against a faster spinning grinding wheel,great care should be taken as the OD comes closer to finished size as its too easy to over grind the tool.
ID grinder
An ID grinder grinds the inside diameter (ID) of a work piece but usually this tends to be a longer process than OD grinding as the ID grinding stone is smaller and requires the operator to make smaller cuts from the tool to ensure that the ID grind is perfect and to the correct size.
Centerless grinder
A centerless grinder is a type of OD grinder where the workpiece, rather than being supported on either end, is held against the grinding wheel by a second smaller wheel, turning at a slower RPM and known as a regulating wheel, while resting on a workblade.
Bench grinder
A bench grinder or pedestal grinder is a machine used to drive an abrasive wheel (or wheels).
Depending on the grade of the grinding wheel it may be used for sharpening cutting tools such as lathe tools or drill bits. Alternatively it may be used to roughly shape metal prior to welding or fitting.
A Wire brush wheel or buffing wheels can be interchanged with the grinding wheels in order to clean or polish work-pieces.
Organ grinder
The organ grinder was a musical novelty street performer of the 19th century and the early part of the 20th century, and refers to the operator of a street organ.
Period literature often represents the grinder as a gentleman of ill repute or as an unfortunate representative of the lower classes. Newspaper reporters would sometimes describe them cynically or jocularly as minor extortionists who were paid to keep silent, given the repetitious nature of the music. Later depictions would stress the romantic or picturesque aspects of the activity. Whereas some organ grinders were itinerants or vagabonds, many were recent immigrants who chose to be street performers in order to support their families. Those who actually owned their barrel organs were more likely to take care of them and pursue the "profession" more seriously. A few organ grinders still remain, perhaps most famously Joe Bush in the United States.
Angle grinder
An angle grinder is a handheld power tool used for cutting, grinding and polishing.
Angle grinders can be powered by an electric motor, petrol engine or compressed air. The motor drives a geared head at a right-angle on which is mounted an abrasive disc that can be renewed when worn. Angle grinders typically have an adjustable guard and a side-handle for two-handed operation.
Angle grinders may be used both for removing excess material off a piece or simply cutting into a piece. There are myriad different kinds of discs that are used for various materials and tasks, such as cut-off discs (diamond blade), abrasive grinding discs, grinding stones, sanding discs, wire brush wheels and polishing pads. The angle grinder has large bearings to counter side forces generated during cutting, unlike a power drill, where the force is axial.
Angle grinders are widely used in metalworking and construction, as well as in emergency rescues. They are commonly found in workshops, service garages and auto body repair shops. There is a large variety of angle grinders to choose from when trying to find the right one for the job. The most important factors in choosing the right grinder are the disc size and how powerful the motor is. Other factors include power source (pneumatic or electric), rpm's, and arbor size. Generally disc size and power increase together. Disc size is usually measured in inches. Common disc sizes for angle grinders include 4, 4.5, 5, 6, 7, 9 and 12 inches. Discs for pneumatic grinders also come much smaller. Pneumatic grinders are generally used for lighter duty jobs where more precision is required. This is likely because pneumatic grinders can be small yet remain powerful, while it is harder for an electric grinder to maintain adequate power with smaller size. Electric grinders are more commonly used for larger, heavy duty jobs. There are also small electric grinders and large pneumatic grinders.
Meat grinder
A meat grinder or meat mincer is a culinary tool for grinding meat. Several varieties of the tool are available, although most people conjure the image of a hand-powered grinder which is cranked.
Most meat grinders function by forcing the meat against and through small holes as it is cut. They can be run on electricity.
grinding mill machine for industrial.
This contents for reference only, business please go to the official network http://mill.com.tw
CLASSIFICATION OF GRINDER II (grinding mill)
