CNC Double column Type  Slideways & Surface Grinding Machine  KSL Series

Backed by many years of experience and accumulated know-hou, the Sumitomo CNC Double column type Slideway & Surface Grinding Mchine is the answer to the diversified needs of users.With Palette cahnger・Automatic grinding wheel changer can unmanned operation(CNC specification)

Recommended Industry and Workpiece

Grinding machine  Machine tools  Machine tool bed and column
Grinding machine  Various machine parts  Various machine parts

Product characteristics

High precision

  • Rigid construction
  • Heat deformation suppression
  • Precise spindle
  • Vibration suppression
  • Precise feed mechanism
  • Coolant temperature control(option)

Abundant additional technology(options)

  • Automatic measuring device of grinding allowance
  • Convex/Concave grinding device
  • Automatic grinding wheel changer
  • Palette changer
  • Tandem table system

Excellent operation

  • CRT Built into concentrated pendant control box(Current position display)(Grinding program display)
  • Spark-on control
  • CNC automatic operation

Horizontal spindle grinding head

Horizontal spindle grinding head
  • Accurate vertical and horizontal feed of the grinding head is controlled by AC servo.
  • The slideways are coated with low friction fluoro-plastic plates.

Dressing device

Dressing device
  • The hydraulic dresser feed uses precisely finished dovetail slideways.
  • Angled faces are dressed automatically with the index coupling(in 5[degree]steps)
  • Under programmed operation, the dressing infeed and opening and closing the grinding wheel cover are performed automatically.

Hydrostatic bearing grinding spindle

Hydrostatic bearing grinding spindle

The grinding spindle is constructed with high rigidity, high precision, low vibration, hydrostatic bearings.

Universal grinding head

Universal grinding head
  • Rotation of the grinding head is indexed, precisely and automatically, in 5°steps(1°steps to special order) by the index coupling.
  • Accurate vertical and horizontal feed of the grinding head is controlled by AC servo motors and precise ball screw.
  • The slideways are coated with low friction fluoro-plastic plates.

Dressing device

Dressing device

Using the grinding head’s own feed mechanism, the grinding wheel can be dressed automatically with various forms by the diamond tool which is set at the lower right hand end of the crossrail.

Spindle

Spindle

The grinding spindle is a spindle unit which uses high rigidity, super recision bearings.

Pendant control box

Pendant control box

The CNC Control Panel is built into a pendant control box from all which all operations of the machine are controlled. These include:all manual operations such as grinding head and table driving, simple grinding cycle settings, NC program editing, MDI operations.

Setting grinding mode

The grinding mode for manual grinding operations, such as plunge grinding and traverse grinding, can be set simply by using the digital switches and the select switches.

Spark on control device

Spark on control device

This device automatically brings the grinding wheel close to the workpiece and stops when operating load on the grinding spindle changes as the grinding wheel touches the workpiece. The directions of approach are downwards for the horizontal spindle grinding head and up, down, left or right for the universal grinding head.

CNC automatic operation

CNC automatic operation
  • All operations, including vertical and horizontal grinding head feed, table driving and dressing operation, are controlled by the CNC Controller.
  • High volume, repetitive processing operations can be fully automated with numerically controlled programs which are thoroughly interwoven with operator know-how.
  • For low volume operations, the operator can easily set up the operating cycles of a pre-set system.

Grinding flow chart

Grinding flow chart

CNC control equipment specifications

Item Specifications
CNC control equipment FANUC Series 31i
Controlled axis
( )denotes additional axis
Y, Z, V, W, A, (X), B, *C, AA, BB, CC
Simultaneous controllable axis 4 axes (positioning and linear interpolation)
Minimum increment system 0.001mm
Tape code EIA or ISO (automatic recognition)
Decimal point input Yes
Rapid traverse rate 6000mm/min (Y, V axes)
3000mm/min (Z, W axes)
Rapid traverse override 0%,25%,50%,100%
Freerate command mm/min units, F4 digit direct designation
Feedrate range (manual operation) 0~1500mm/min(21 notches)
(automatic) F4 digit command
Feedrate override 0〜200%
LCD&MDI panel 10.4inch(*15inch) color&full-keyboard
Custom macro Yes
Command system Both absolute/incremental commands
Post program length *1) 640m *max.20480m
Tool offset memory *1) 999 *max.2000
Registered program storage *1) 500 *max.4000
Custom macro common variable *1) 600
Reference point return No.1 No.2 *1 ) No.3 No.4
Position detection system By pulse coder, semi-closed loop type
Coordinate system and coordinate system setting G92, G52, G53, G54〜G59
Various functions
  • Memory type pitch error compensation
  • Backlash compantation
  • Skip function(G31)
  • Separate manual pulse generator(magnification ratios X1, X10, X100)
  • External data input/output
  • Reader/Punch interface(Standard RS232-C)
  • Single block
  • Dry run
  • Stored Stroke Check
  • Handle interruption
  • Date protection key
  • Dwell function(G04)
  • T, S Code, Auxiliary function(M Code)
  • Display language conversion(Standard: English, Japanese)
  • Operating times, part numbers display
  • *Crowning function
  • *Background edit function

*Optional accessories
*1)Includes quantities used by standard grinding programs supplied by us.

Automatic measuring device of grinding allowance

・With this device fitted to the grinding head, the accuracy of the workpiece on the ground surface is measured automatically. All measuring is performed automatically in accordance with the numerical control program and the results of the measuring are input automatically to the CNC equipment for head positioning and grinding allowance. This means less tine is needed for pre-processing measurement and grinding can be fully automated.

Measuring grinding allowance

Measuring grinding allowance

Measuring thickness

Measuring thickness

Convex/Concave grinding device

Convex/Concave grinding device Convex/Concave grinding device2
  • Because the vertical and horizontal movements of the grinding head(universal grinding head) are synchronized with the table movement by a pre input NC program, cured surface can be ground. This avoids the necessity skilled operator and ensures constant accuracy.
  • Concave and convex forms are set by the NC program so changes and additions to shapes are easily made and several workpiece may be ground simultaneously.

Automatic grinding wheel changer

  • This device automatically changes the various grinding wheels used on the universal grinding head.
  • The grinding wheel, flange and grinding wheel cover are changed together as one unit.
  • The grinding wheel is clamped by dish spring and unclamped hydraulically(pullstud system)
  • After the grinding wheel has been changed, its dynamic balance is adjusted automatically. Also, depending on the number of grinding wheels to be stored, either of the following systems may be selected.
    • Rotary magazine system(4 wheels)
    • In-line palette system(extra grinding wheels can be added)
Rotary magazine system

Rotary magazine system

In-line palette system

In-line palette system

Automatic grinding changer, in-line palette system

Automatic grinding changer, in-line palette system

Palette changer

8 rotary palette pool system

8 rotary palette pool system

  • Reducing the time required for setting up and carrying the workpiece and in and out, improve efficiency and saves labor.
  • Various palette changers can be used to suit space and layout.
  • 8 rotary palette pool system
  • Multistory palette pool system
  • The common use of palettes by the machining center leads to integrated factory automation.
Multistory palette pool system

Multistory palette pool system

Tandem table system

Tandem table system2

The tandem table system combines improved working efficiency through reduced set up time with high precision grinding of large workpiece.

While table A is grinding, table B is stopped. This enable workpiece to be set up, removed or measured while the machine is operating, which increases the operation efficiency of the machine.

Coupling and separation of Table A and Table B is automatic.

Since Table A and Table B can be used while coupled together, long workpiece can also be ground.

Tandem table system1

Grinding center

  • CNC Guideway & surface grinding machine with the automatic grinding wheel changer and the palette changer.
  • This is a fixed crossrail, single universal grinding head.
Grinding center

Coolant separator

Choose from the following, depending on the workpiece and finish required.

  • Magnetic coolant separator
  • Magnetic coolant separator with paper filter
  • Other

Coolant temperature control device

Coolant temperature control device

The coolant temperature is maintained constantly at he temperature of the main machine by a heater and cooler installed in the coolant tank.

Heat deformation suppression

Heat deformation suppression

Coolant circulated inside the table suppresses heat deformation of the table due to the heat generated by the hydraulic cylinder and the stabilized table movement permits finish grinding at any time.

Dynamic wheel balancing device

The dynamic balance of the grinding wheel can be simply adjusted while the grinding spindle is rotation. There are two systems.

  • Interval balance pieces in the spindle.
    Enclosed in the end of the grinding spindle are two fan-shaped balance pieces. Dynamic balance of the grinding wheel is effected by controlling their angle of rotation.
  • Interactive balance device
    By automatically displaying the unbalance vibration value during rotation of the rotating shaft and the appropriate angle of the three balance pieces provided on the whorling flange, it is possible to minimize the dynamic balance of the palm gutter easily. Once balanced you can keep it for a long time.

Crossrail level adjustment device

The adjustment can be made while observing the crossrail level in the CRT display on pendant control box. With a specially specified program, the adjustment can be made automatically.

Grinding wheel flanges

Case study

Product specifications

Machine specification

Machine specification

※Please check the catalog for product specification details

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