Junker jupiter grinding machine

JUNKER partner for precision JUPITER Can precision grinding UPITER 125 
JUPITER 200
JUPITER 250
JUPITER 500 Productive all the way - centerless cylindrical grinding Grinding with JUPITER means centerless cylindrical grinding using either corundum or CBN, depending on the application. CBN high-speed grinding technology allows for a high stock removal rate while still maintaining long grinding wheel life - a huge advantage, particularly with high production volume. Efficient all the way Centerless grinding is a method of series or mass production of cylindrical components. There are basically two types of centerless grinding - through feed and plunge-cut.

JUNKER JUPITER 3 The right concept for precise grinding Stable construction for perfect results Compared to the competition, JUPITER grinding machines demonstrate above- average dynamic stiffness.

JUNKER JUPITER series PRECISION Market-leading stiffness with the JUNKER Work rest blade automatically adjustable machine bed concept during grinding stiffness behavior of JUPITER machines Economic and technical advantages The JUPITER series with its proven angled bed is a machine High stock removal concept with high static stiffness. This is crucial in order to simultaneous grinding of several diameters optimally use the advantages of centerless grinding. optional use of CBN abrasives for higher machine availability and increased stock removal Centerless grinding with cantilevered workpiece Dressing device and process to match requirements Taper correction boosts productivity; regulating wheel In centerless grinding, the workpiece is ground and infed can be swivelled to adjust in case of non-linear grinding along its lateral surface. The linear contact with the grinding wheel wear. This can lengthen the dressing interval. wheel comprises the cutting line. The workpiece lies against Full protective hood opens on both sides, allowing the regulating wheel and is supported from below by a work connection to a central mist collection system optionally, rest blade. During grinding, as the part diameter is reduced, a non-central mist collector can be offered the center of the workpiece becomes lower, causing it to Vibration-free torque transmission on grinding spindle migrate towards the regulating wheel. The JUNKER electronic control system compensates the change in position with corresponding adjustments to the grinding and regulating wheels, guaranteeing precise grinding every time. For parts that are difficult to clamp because of their shape or small size, centerless cylindrical grinding is the ideal solution.

JUNKER JUPITER 5 Centerless cylindrical grinding with the JUPITER series

High roundness quality thanks to market-leading stiffness High stock removal on micro surfaces with the patented adjustable work rest blades No need to change components - angular plunge cut operation without retooling Fast changeovers thanks to automatic calculation of set-up parameters with the unique JUNKER software tool

MODEL FAMILY

JUPITER 125 Presenting, the latest addition to the JUNKER product lineup - the JUPITER 125. This machine takes traditional straight plunge-cut centerless grinding and adds angular plunge-cut grinding with a regulating wheel head adjustable up to 15 degrees. This allows the machine to grind a wide variety of contours, including shoulders. One technical innovation featured on the JUPITER 125 is the patented work rest blade that automatically adjusts its height during the grinding process. In combination with the stiff machine bed concept, the machine attains roundness qualities of under 1 mm. Each grinding spindle is equipped with a direct drive, which means that variable wheel speeds and process parameters can be flexibly selected.

JUPITER 200 The JUPITER 200 machine concept is set apart by its compactness and accessibility. We've combined our field experience with the newest design principles and the latest CNC technologies and adapted them to the needs of the operator. simple, flexible and inexpensive automation systems allow for part changeovers that take less than 3 seconds.

JUPITER 250 JUPITER 250 and 500 Like the JUPITER 125, the JUPITER 250 and 500 both feature an automatically height-adjustable, numerically controlled work rest blade. The machine concept lends itself to applications such as the grinding and fine grinding of needles for bearings and hydraulic pistons. Another application is stock removal for rods up to 6 m in length at a feed rate of 5 to 12 meters per minute.

JUPITER 500 Regulating spindle and regulating wheel head Regulating wheel head installed on slideways Double-sided roller bearing in precision spindle bearings spindle drive SP2 axis via servo drive and gear belt Torque: 58 Nm Continuous rotational speed: 1-800 min-1 Automatic grinding wheel compensation after dressing Dressing unit with 2 numerically controlled axes

Grinding spindle and wheelhead Double-sided roller bearing in precision spindle bearings Vibration-free torque transmission across V-belt Automatic balancing unit Drive capacity of 22 to 100 kW Dressing unit with 2 numerically controlled axes Grinding and regulating spindle

JUNKER JUPITER 7 Technical data

Grinding area Part diameter Part length Grinding wheel Corundum CBN spindle drive Abrasive Regulating wheel Regulating wheel dimensions spindle drive Method Through feed grinding Plunge-cut grinding Machine dimensions Width x length x height The JUPITER, JUPITER and JUPITER come available with a full or partial enclosure.

TECHNICAL DATA mm mm mm/sec mm/sec kW CBN / Corundum

CONTROLs The central JUNKER CNC control concept An open complete system

The idea: central control system for all components of the grinding machine. All entries and all information through the Erwin Junker Operator Panel EJ-OP. On the JUPITER, this comprises the operating interface for a Siemens Sinumerik D CNC control unit and, on the other JUPITER machines, a Bosch Rexroth unit.

start-up: simple and reliable The JUNKER hardware and software concept allows a significant reduction in installation cost for JUPITER cylindrical grinding machines. Special software tools help ensure that start-up is fast and secure.

Teleservice: fast and effective Your main source of help with any questions or problems is the JUNKER Services team. If necessary, all the available data related to machine status can be analyzed online. This JUNKER service raises the availability of your system and keeps service costs down.

EJ-OP operating panel: one format for all machines Programming and operation supported by graphics and interactive procedures Less training required Chances of operating errors minimized Fast retooling and set-up Stores all grinding parameters Machine programming can also be done centrally, for example main screen template for work preparation

All components accessible via Teleservice Identical operating system for different machines, regardless of the controls used Uniform operating interface for all components Automatic file storage, including set-up parameters of all non-JUNKER components

Grinding technology selection Grinding wheel for angular plunge-cut Geometric requirements and center-point displacement

EQUIPMENT AND OPTIONS variable equipment and individual options Automation JUNKER offers both internal and external loading systems for the JUPITER line, depending on workpiece specifications or customer preference. The loading systems can be combined with various part transportation systems, such as conveyor belts, vibrating conveyors or specially customized systems.

Measuring systems The measuring systems are also individually tailored to work- pieces and customer specifications. For instance, they can be built either as contact-free pneumatic/laser or mechanical systems. Measuring is done post-process. The recorded measurements are evaluated and then used for dimensional corrections, according to the measurement strategy.

Flexible dressing system On the JUPITER, dressing can be done manually, in set-up mode Automation systems or with an automatic dressing program with grinding wheel compensation. The 2-axis CNC dressing system for grinding and regulating wheel be selected either as a stationary dresser needle fliese blade and needle plate or, for the grinding wheel, as a power dressing wheel rotating diamond roller. If the dressing wheel is selected, it can still be easily exchanged for a stationary dresser in future.

Integrated dynamic balancing system Cutting speed remains constant thanks to grinding wheel drive control Power dressing wheel Post-process measurement control; includes dynamic roundness measurement for certain applications Coolant nozzles with automatic compensation Regulating wheelhead swivels along B2-axis and inclines along C2-axis; numerically controlled Retrofit for CBN grinding Height-adjustable work rest blade holder Mist extraction system Hydraulic unit for: Automatically clamping work rest blades Automatically locking regulating wheel head Automatically opening protective hood Power diamond dressing wheel Coolant filtration unit Measuring systems JUNKER for Precision Erwin Junker Erwin Junker Erwin Junker Grinding Technology Grinding Technology of Technological Progress. Phone: Fax E-Mail: