• CNC tool grinding machine model Evolution

Grinding machine TTB Evolution

5 or 6 axes – precision at its best

TTB-Highest precision quality without compromise

  • Tools in the diameter range from Ø 0.02 to 12 mm in optimum quality
  • Consistent accuracy even after many years, thanks to TTB own developed axes drive mechanical system
  • Spindle revolver with 4 grinding spindles repeat positioning precision < 0,3µm
  • Short changeover times because of the use of modular components
  • High mechanical reliability and extremely low downtime
  • Optimum TCO (Total Cost of Ownership) thanks to reduced price of the machine and low maintenance costs.

Tool data

  • Min. diameter of the tool Ø 0.02 mm
  • Max tool diameter Ø 12 mm
  • Max. grind length 150 mm
  • Resharpening Ø 3 - 25 mm

Technical details and features

  • Spindle change: less than 0.3µm axial and radial in 3 seconds
  • Each spindle can be equipped with up to 3 grinding wheels
  • Backlash-free linear axes with unique TTB axis drive system
  • High precision drive spindles, hydrodynamic lubrication and hydraulic backlash compensation (preload)
  • Rotary axis V: Backlash-free with hydraulic compensation (preload)
  • All axes X-Y-Z-V-U with direct high-resolution measuring systems - glass scales and direct encoders (+/- 0.01µm or +/- 2")
  • Multi-pallet loader from 2 to 4 pallets for high capacity
  • Pallets for diameters from 1 to 16mm and up to 814 workpieces
  • NUM control with NUMROTOplus® software
  • Extensive range of accessories and special units for flexible expansion options

Technical data - TTB Evolution

Application technologyGrinding from solid material Ø 0,02 - 12 mm
ResharpeningØ 3 - 25 mm
Grinding lengthmax. 150 mm
Linear axesLongitudinal travel (X axis)290 mm
Cross travel (Y axis)250 mm
Vertical travel (Z axis)150 mm
Swivel axesSwivel range of the workpiece spindle (V axis)230 °
Rotary axesRotational Range of Workhead (U axis)infinite
Rotary Speed (U Axis) for cylindrical grinding0 - 1,500 rpm
Feed ratesLinear Axes (X, Y, Z axes)3 m/min
Swivel of Tool Spindle (V axis)10,000 °/min
Rotary speed of U axis as a positioning axis36,000 °/min
Minimum Positioning IncrementLinear Axes (X, Y, Z axes)0,0001 mm
Rotary Axes (U, V)0,0001 °
Measuring systemsResolution Linear Axes (X, Y, Z axes)0,01 µ
Accuracy Swivel Axis (V axis)+/- 2''
Accuracy Rotary Axis (U axis)+/- 20''
Turret and wheel grinding spindlesNumber of grinding wheel spindles (HSK C32)4 (optional 5)
Nominal power grinding motor (Pn-S1) 10.0 kW (13.4 HP)
Programmable speed of grinding spindlesup to 12,000 RPM
Number of possible wheels per spindle1 - 3
Positioning time of turret3 sec.
High-frequency spindles (option)60,000 1/min
Tool clampingClamping systemsW25, W20, B15
Hydraulic Collet
Clamping diameter range1 - 25,4 mm
Clamping lengthup to 250 mm
Optional clamping systemsupon request
CNC controlNUM
Programming system softwareNUMROTOplus®
Dimensions of machineL x W x H290 x 225 x 180 cm
Weightca. 3,300 kg
Technical changes and fallacies reserved.
Text and illustrations contain optional accessories.


The Evolution consists of 2 groups of axes, the grinding unit and the workhead unit. They are mounted onto an extremely firm cast iron base plate. The base plate is supported by special anti-vibration pads, to avoid interferences from external sources.


The grinding unit (Y-axis) (please also change in the DE version, no A axis, only Y) controls movement of the grinding wheels. The workhead unit (U, V, X and Z- axes) controls movement of the tool. The U-axis has dual functionality: it can be used as a positioning axis or a free-turning spindle (used when cylindrical grinding).


This kinematics allows the wheels to grind above or below the tool. The machine assemblies are supplied with tempered oil in order to reduce the heat transfer.


The heart of the machine is the grinding wheel turret with 4 spindles. Each spindle can be equipped with up to 3 wheels. This gives the machine significant advantages:

  • All required grinding wheels are always and instantly ready for use in the machine
  • The selection of the grinding wheel is performed in 6.9 seconds
  • Maximum deviation in grinding wheel package changeover < 0.3 µm axial and radial
  • Absolute accuracy in positioning and repeatability

The tools can be ground in one clamping and with the highest degree of precision. Additionally, the linear axes have a “one of a kind” motion-driving system; a combination of hydrodynamic technology and a calibrated preload. The conclusion: guaranteed, unparalleled repeating accuracy and backlash-free movements.

Kinematics of the Evolution CNC tool grinding machine

Setting up the machine

For setup of the grinding machine Evolution, several versions of modular components are available, such as steady rests or blank guides, loading solutions, camera, clamping systems, tailstock and grinding wheel spindles. This allows individual configurations and optimization of the machine for a specific grinding task.

Changing of the modular units occurs easily and quickly.

The grinding wheels can be trued and measured while mounted inside the machine.

Turret of the Evolution tool grinding machine

Loading Unit / Automation

Profitability through high automation

The machine can be equipped with an automatic tool loading unit, allowing 24/7 un-manned operation.

The loader can be configured in different versions with 2, 3 or 4 pallets. Customized pallets can be provided upon request.

Standard pallets can accommodate up to 814 workpieces ranging from 1 to 16 mm, depending on the diameter.

The loader is equipped with two precise CNC axes and with pneumatic swivel and clamping units. During a single loading sequence, a new blank is taken from the 1st pallet by gripper #1. It positions itself at grinding entry door and waits. Upon completion of the current grinding cycle, the tool loading unit enters the machine. The finished tool is removed from the collet by gripper #2. The new blank in gripper #1 is inserted into the collet and clamped accordingly. The complete gripper unit then exits the machine and places the finished tool into the second pallet.

Profitability through high automation

Steady Rest, Spindle, Machine control

Steady Rest

The fully automatic steady rest is designed for tools having grind lengths in the range of 10x to 15x of the diameter. The radial mounting position of the steady rest can be adjusted in 15 ° increments, thus the steady rest can be used either above or below the tool (see illustrations).

Steady rest above the tool Steady rest from above
Steady rest below the tool Steady rest from below

Assembly and set-up are achieved quickly by a simple procedure and with fewer steps. The support prisms and bushings are clamped by a quick clamping system and can be aligned according to the tool taper.


High frequency spindle

The high frequency spindle is used for the grinding of pockets of inserts and for grinding with small diameter wheels. The HF spindle is mounted in one of the spindle turret positions. The turret can be equipped with up to 4 HF spindles. TTB can also supply pneumatic HF spindles of 60,000, 100,000 and 150,000 1/min. The conversion from a standard to an HF spindle or vice versa takes place in under 3 minutes!


Shaft guide

The shaft guide optimizes the concentricity of the tools by guiding the shaft on a v-block with a counterholder. The counterholder can be mounted on the left or right and is equipped with a v-block so that the blank rotates symmetrically.


IC Detect (Internal Coolant Hole Detection)

We are using a high-res camera to locate the indexing position of coolant hole channels in blanks. This camera system is integrated into the loading unit; the necessary measurements happen separately from the tool grinding process. The smallest detectable hole diameter is Ø 0.05 mm (tool diameter max Ø 6 mm).


NUMROTOplus® programming system

NUMROTOplus® has optimal and efficient programming and support functions and includes powerful 3D simulation and precise collision monitoring. Company-specific technology databases can also be created. This enables optimal adaptation to a wide range of production strategies and the best utilization of customer-specific programming and operating know-how. Software updates are available free of charge for the entire service life of the machines.

Steady rest on the tool grinding machine Evolution

Additional options

TTB supplies peripherals, accessories and special units upon request:

  • Chillers
  • Coolant filter and supply pump units
  • Oil mist filtration systems
  • Fire suppression systems
  • Image processing systems for workpiece positioning
  • Special measuring systems with laser or probe technology
  • Special loading units
  • Assembly units for specific applications
Loading module for the Evolution CNC grinding machine

Application examples

The following tools can be ground or resharpened on the EVOLUTION model:

  • Hobs, shaper cutters and power skiving (gearing)
  • End Mill Cutters
  • Drills, step drills
  • Screw tap
  • Turning Tools
  • Cutting blades
  • Turning tools
  • Stamps, punching tools
  • Burrs

The CNC grinding machine TTB EVOLUTION is used in the following industries:

  • Automotive industry
  • Medical and dental industry
  • Aerospace
  • Precision mechanics
  • Watch industry
  • Electronics industry
  • Molds
  • Metal industry
  • Chemical and textile industry
Areas of application for different tools in different industries