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The RC series centerless grinding machines can be used for infeed grinding and thrufeed grinding to ensure accuracy, high productivity in workpieces with diameters between 1 mm and 50 mm. Automatic loading and unloading attachment is convenient to operate and reduce cost. The main features are as follows¡G
- The grinding and regulating wheel spindles are made of high quality alloy steel (SNCM-439), and treated through: normalized, tempered, carburized hardening, sub-zero treatment, and then follows the precision grinding process which can greatly enhances spindle life and stability guaranteeing deformation free performance.
- The unique hydrostatic bearings of the grinding wheel and Roller and Ball Bearing of regulating wheel can reduce the metal friction.
- The machine base is manufactured from high quality Meehanite cast iron and analyzed by advanced Finite Element Method (FEM). Along with vibration stress release, these outstanding structural features assure high strength, maximum damping capability, and longer service life.
- Total solution. Automatic grinding process design.
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HIGH PRECISION CENTERLESS GRINDING MACHINES
Wide range of centerless grinders for high precision and production jobs that have been designed to easily incorporate peripheral equipment such as loading systems, measuring equipment and
coolant systems.
E - 301- 305 - 318 -327
Component size (min-max) diam. (mm) 1,5 - 250
Grinding wheel dimensions (mm) 325 x 125 - 650 x 500
Main motor power (kW) 7,5 - 75
Gross weight (approx.) (kg) 1800 - 16500
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Centertype grinding machine heavy duty with movable heads
for processing of round rods, bars, shaps, mill products
adjustable grinding presure
heigh though speed
programm contolled adjustment of diameter and lenght
stations for grinding, brushing, polishing
Diameter range: 70-500 mm
Length: 1200-14000mm
Max weight: 10000kg
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PreciGrind 2000
outer diameter (OD) – range
inch 0.020” - 0.315”
metric 0.500 mm - 8.000 mm
(larger size available upon request)
bore diameter range (for guiding wire)
inch 0.004” - 0.236”
metric 0.100 mm - 6.000 mm
(larger size available upon request)
maximum part or “chain of parts” length
inch 35 1/2”
metric 900 mm
grinding wheel dimensions (standard)
inch 1A1 7”x 3/4”-2 3/4” x 1 3/4”
metric 1A1 175 x 20-70 x 45 mm
(other dimensions are available upon request)
automatic process control (NC)
Siemens S7-200 step-motor
electrical specifications
voltage 200V - 230V
frequency 50Hz - 60Hz
dimensions
inch (LxHxW) 75” x 79” x 32”
metric (LxHxW) 1900 x 2000 x 800 mm
weight
290kg / 640lbs.
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HIGH PRECISION CENTERLESS GRINDING MACHINES
Wide range of centerless grinders for high precision and production jobs that have been designed to easily incorporate peripheral equipment such as loading systems, measuring equipment and
coolant systems.
E - 315 FV
Component size (min-max) diam. (mm) 0,5 - 50
Grinding wheel dimensions (mm) 610 x 200
Main motor power (kW) 15
Gross weight (approx.) (kg) 8000
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Centerless grinding involves the workpiece being simultaneously machined and guided on its generated surface. The line contact on a grinding wheel forms the grinding line, the workpiece lies flush with the regulating wheel and is held in place from below by a guide rail.
During grinding, the center of the workpiece lowers as its diameter is reduced through abrasion. This causes the workpiece to migrate towards the regulating wheel. JUNKER’s electronic control system compensates for this position change by tracking the grinding wheel so that precise machining is guaranteed at all times.
Centerless cylindrical grinding is also the ideal solution for workpieces that are difficult to hold due to their shape or small dimensions.
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Simplify. With a ground-breaking project, BONELI's Smart 10 centerless grinder is unbeatable in performance. Designed to reach a new level in grinding, the machine simplified operations once complex. The result is a machine with much higher precision, easy to operate, lean, with low and simple maintenance and, best of all, a much lower cost. It is a intelligent machine. It is Smart 10.
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BONELI is developing the new BONELI SMART 20 centerless grinder. The machine will have the exact same concept of the SMART 10, however with maximum wheel width of 508 mm (20 inches). All the technological innovations introduced in the SMART 10 (use of spindles, new dressing concept, new software) will also be used in the SMART 20. The SMART 20 will be dedicated especially for thrufeed grinding where it is demanded, beyond precision, extremely high productivity. The launching of the new machine will be during the first months of 2008. Find below the main characteristics of the new BONELI SMART 20:
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Centerless grinding is an extremely efficient process for producing high volume cylindrical components with extremely precise, micron-level, dimensional tolerances.
Cinetic Landis centerless grinding solutions are widely used to process automotive, aerospace, and textile manufacturing components, as well as literally thousands of other precision parts.
Cinetic Landis supplies the industry’s broadest selection of centerless grinding technologies under the Giustina and Landis brand names. These machines, and the process development, service, and support systems behind them, are known worldwide for accuracy, reliability, and ease of use.
These attributes are illustrated by the compact, high-productivity Viking SuperSeries II®, a machine capable of sub-micron accuracy in high-volume applications. Available in a range of sizes and configurations, Viking SuperSeries II®machines can use CBN wheels or slant plunge feed with new generation design.
Large Viking machines feature double support hydrodynamic spindles and cutting speeds up to 60 m/s, while medium and small machines have high speed electro spindles with cutting speeds up to 120 m/s. Wheel widths range from 150 to 650 mm and diameters from 400 to 760 mm.
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BASE
Extremely rigid and vibration-free, thermodynamically stable, one piece cast iron multiple box section design, heavily ribbed, able to maintain consistently high stability under all conditions to the highest level of accuracy over the longest time.
GRINDING WHEEL HEAD
Superior stiff and vibration-free design with steel construction ensuring the highest level of spindle alignment, accuracy and integrity for the spindle under all the working conditions. This is the seat of the nitride steel spindle, supported at both ends by hydro-bearings with forced-circulation of the oil.
REGULATING WHEEL SPINDLE
The structure is made in cast iron and it is fixed on a crank support. Positioned in the center of the slides and not on the side, it allows big amounts of stock removals during rough grinding and very tight tolerances during finish grinding. It is the seat of the casehardened steel spindle, supported at both ends by adjustable bearings.
SLIDES
Wide upper and lower precision slides, hydraulically preloaded antibacklash system provides maximum accuracy for positioning, compensation, repeatability and rigidity. Low friction design, slides protected by a contamination prevention system.
WHEEL DRESSER SLIDES
Slides are hydraulically controlled, with adjustable feed on Monza conventional and Monza CNC single axis, and CNC controlled on Monza CNC multiaxis. Linear precision guides provide: accurate movements stick slip effect elimination and easy maintenance.
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Acme offers a complete line of wet or dry Centerless Grinding machinery for performing a variety of operations ranging from tolerance grinding to decorative finishing on the outside diameter of tube, pipe, rod and bar.
Acme Centerless Systems can utilize coated abrasive belts, abrasive flap wheels, non-woven abrasive wheels, buffing wheels, nylon and wire brushes.
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Centerless grinding is an extremely efficient process for producing high volume cylindrical components with extremely precise, micron-level, dimensional tolerances.
Cinetic Landis centerless grinding solutions are widely used to process automotive, aerospace, fluid power, precision bars and bearings, as well as literally thousands of other precision parts.
Cinetic Landis supplies the industry’s broadest selection of centerless grinding technologies under the Giustina and Landis Cincinnati brand names. These machines, and the process development, service, and support systems behind them, are known worldwide for accuracy, reliability, and ease of use.
These attributes are illustrated by the compact, high-productivity Viking SuperSeries II®, a machine capable of sub-micron accuracy in high-volume applications. Available in a range of configurations for thrufeed and infeed applications, Viking SuperSeries II® machines can utilize CBN wheels, diamond or conventional grinding wheels.
Larger machine designs such as the RK Series feature double support hydrodynamic spindles for larger work. Grinding speeds range from 43 m/s to 120 m/s. Wheel widths range from 203 mm to 650 mm and wheel diameters from 400 mm to 610 mm.
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KCG - 200J
- Easy gusset of minute-sized materials by attaching micron-unit micro gusset device.
- Easy speed control during operation with continuously variable transmission.
- Improved durability with Turcite table transportation system.
KCG - 150/200
- High-resolution realized by adopting the grooved bearing of G/W and R/W.
- Structure to make it easy to change wheel.
- Device to control gusset of R/W with a micro size.
KCG - 300
- High efficiency realized by adopting both sides support type R/W.
- Bed split type, highly rigid, envelop type G/W Wheel head.
- High-resolution realized by adopting the grooved bearing of G/W and R/W.
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BONELI is developing the new BONELI SMART 20 centerless grinder. The machine will have the exact same concept of the SMART 10, however with maximum wheel width of 508 mm (20 inches). All the technological innovations introduced in the SMART 10 (use of spindles, new dressing concept, new software) will also be used in the SMART 20. The SMART 20 will be dedicated especially for thrufeed grinding where it is demanded, beyond precision, extremely high productivity. The launching of the new machine will be during the first months of 2008. Find below the main characteristics of the new BONELI SMART 20:
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Landis Cincinnati RK Series centerless grinders provide an outstanding combination of precision, productivity and ease of operation. The 350-20 RK is arranged for up to a 20” wide wheel for applications requiring high output rough or finish grinding.
A solid, modular machine design built on an epoxy granite base, combined with advanced features make this machine very accurate and highly productive. Forced lubrication has been eliminated by utilizing precision antifriction slideways throughout. Easy setup and operation allow more time for production grinding. Simple systems are easily maintained and deliver high reliability.
Key Features & Advantages:
* Epoxy granite machine base for superior rigidity, vibration dampening and thermal characteristics
* 0.1 micron (0.000004”) machine resolution
* Single screw swivel adjustment
* Anti-friction slide-way systems
* Arranged for infeed or thrufeed operation
* Servomotor regulating wheel drive
* Multi-axis servomotor machine motions
* FILMATIC grinding wheel spindle bearings
* Externally mounted grinding wheel motor
* Stand-alone machine hydraulics
* Machine mounted electrical cabinet
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Simplify. With a ground-breaking project, BONELI's Smart 10 centerless grinder is unbeatable in performance. Designed to reach a new level in grinding, the machine simplified operations once complex. The result is a machine with much higher precision, easy to operate, lean, with low and simple maintenance and, best of all, a much lower cost. It is a intelligent machine. It is Smart 10.
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Monza CNC machines are:
- SMART: they minimize the necessity of a supervision by the operator.
- EASY TO USE: they work through a simple machine-operator interface with screen pages.
- VERSATILE: they reduce the times for changing grinding cycles and for set-ups.
- FLEXIBLE: they can be interfaced with different types of loading/unloading systems and Post-Process gauging systems
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► New Centerless Grinding Machines
► Rebuilding Centerless Grinding Machines
► DINATEC/MICROREX propose as well "Rebuilt Machines" ready for use and available on sale
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