Kanehira Kanehira





CNC Tool Grinding Machine

The RTG-series is the world’s highest-level grinding machine in the 21st century. It was developed from our long years of expertise and technological know-how from dealing in PCD grinding machines by KANEHIRA. They are a leading grinding machine manufacturer with over 30 years experience in the manufacture of PCD tool grinding machines.


By using digital camera, a initial preparatory work performs smoothly, and various measurement and saving measurement image in real time.

Saving a work before and after the processing, so that it contributes quarity assurance.

Observing from low to high magnification by a zoom lens. Especially small diameter nose R set smoothly in high magnification.

Crack or separation of work can be observed by epi-illumination. Especially it demonstrates on regrinding process.

Concentric circle, semicircle, viewing cross line
Epi-illumination+Transmitted illumination

Concentric circle, semicircle, viewing cross line

XY distance measurement
Transmitted illumination

Camera image 200X

Semicircle,Angle measurement

Drawing of workpiece


Axis composition

Processing example

Cylindical mini work piece grinding attachment

NC cylindrical grinding: Machining a small-diameter grinding wheel using an index device

PCD cutter grinding

Machining a disposable tip (The tip breaker is machined at the same time)


PCD cutter

Interactive program


Machine mounted laser measurement (optional)

The Blum laser system measures the configuration of the workpiece on the machine,completely automatically. The results of the measurements are used to prepare for the next machining session,to reduce the time needed for highly accurate machining. Setup time is also substantially reduced.

AE sensor system (option)

The AE ultrasonic sensor incorporated in the main spindle alerts the operator to any micro-vibration which might occur in the main spindle during operation. The alert is shown in real time on the monitor. It can also be used for checking the resistance while grinding,for sensing contact,and other purposes.

Machine mounted dresser

The high-performance dresser mounted on the machine continuously keeps the diamond wheel aligned and flat,for the best accuracy. This provides high accuracy,great uniformity ,and high efficiency to your machining operations. Programming for constant compensation will get the most out of the NC.

High-rigidity bed

A number of thick ribs are used for the machine,after careful consideraton of the distribution of mass on the superstructure. This provides the rigidity required of a PCD tool grinding machine,as well as the ability to absorb vibration.

Space saving

The entire machine is enclosed snuggly in a housing that uses only a very small floor space for installation (1550mm x 1742mm).There are no unnecessary projections of doors or servomotors. The operation panel is carefully designed and organized for easy operation.

User macro

A great many user macro programs(some macros are optional) are possible, for easy and efficient operation. The machine comes with some macros already installed. Even operators who are not familiar with NC machines can easili progam a macro. We also stand ready to make customized macros, according to a costomer’s machining needs.

The futures of RTG3800

  • 8 axes NC control
  • Lazer measuring
  • AE sensor system
  • NC on-board dressing
  • Digital zoom camera device
  • With automatic loader
  • A workpiece is set on exclusive holder
  • Exclusive holder with ID chip
  • Micron folder with tempreture adjustment


Digital camera

Demonstrating power to smoothly start new item.


Mixture flow production is possible by ID.
ID aquires the variations of workpieces and corrects them.

ID+Digital camera

Utlizing quality control and quality assurance by using and saving ID data of workpiece images.

Interactive program

You can create programs easy by PCD tool grinding interactive programming system that combines KANEHIRA’s know-how of PCDgrinding over many years. It can response to change shape of item promptly.


Reliability of open CNC in PC is improved greatly. There is no risk of data loss by crush.

Automatic loader

A nighttime unmanned operation is possible.

Standard specifications

  • Controls

    CNC axis

    8 axis (X,Y,Z,C,B,U,W,V)

    Operation panel

    Equipped with LCD(9.5inch)

    Manual pulse generator

    1 set

    Operation unit

    FAUNC 32i-MB

  • Wheel spindle

    Spindle motor

    spindle motor

    Motor output


    Wheel spindle speed


    Swivel angle

    AC servomotor(B axis)

    Tilting angle


    Wheel shape

    Taper cup type φ200 x T65 x H60

  • Wheel spindle stock

    Wheel spindle stock travel

    AC servomotor(X axis)

    Oscillation stroke


  • Work

    Cross table horizontal travel Right and left

    NC(V axis)

    Cross table horizontal travel Right and left


    Cross table horizontal travel Back and forth

    AC servomotor(U axis)

    Cross table horizontal travel Back and forth


    Work table swivel

    AC servomotor(C axis)

    Work table swivel angle


    Infeed table travel

    AC servomotor(Z axis)

    Infeed table travel


    Cross table vertical travel

    AC servomotor(Y axis)

    Cross table vertical travel


  • Onboard dresser

    Back and forth travel

    AC servomotor (W axis)

    Control function

    Continuous/intermittent selectable

    Wheel for use

    Cup type φ100mm

  • Machine weight


  • Wheel flange


  • Work tools



  • 【CCD camera unit】
    CCD camera | 6 magapixel color CMOS
    High precision zoom microscope | 1~5x
    PC | Windows 7,HDD250G,DVD drive,Keyboard,Mouse,USB3.0,LAN
    Monitor | 17 inch color LCD
    Monitor magnification | 40-200x (zoom lens)
    Measurement function | Scale,between two points,radius angle,calibration
    Display soft | Cross scale,concentric circle,semicircle
    Transmitted light | LED 6W
    Camera | Reinforced-camera mount system
  • 【Coolant unit】
    Tank capacity / Pump | 60L / 60W
    Tank capacity / Pump | 60L / 60W
    Filter | Simple paper filter
    Tank capacity | 120L
    Filter | Micron filter temperature adjustment
  • Work table(X-table) digital display
  • Signal tower
  • Custom macro soft
  • Auto measuring unit for wheel position
  • Auto measuring unit for work form |
    Used laser point gage
  • Auto measuring software for work
  • Wheel axis acoustic unit | To know touching with a wheel
  • Work loading unit

Machine dimension