TTB-Highest precision quality without compromise
Technical details and features
|Application technology||Grinding from solid material||Ø 0,02 - 12 mm|
|Resharpening||Ø 3 - 25 mm|
|Grinding length||max. 150 mm|
|Linear axes||Longitudinal travel (X axis)||290 mm|
|Cross travel (Y axis)||250 mm|
|Vertical travel (Z axis)||150 mm|
|Swivel axes||Swivel range of the workpiece spindle (V axis)||230 °|
|Rotary axes||Rotational Range of Workhead (U axis)||infinite|
|Rotary Speed (U Axis) for cylindrical grinding||0 - 1,500 rpm|
|Feed rates||Linear 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 axis||36,000 °/min|
|Minimum Positioning Increment||Linear Axes (X, Y, Z axes)||0,0001 mm|
|Rotary Axes (U, V)||0,0001 °|
|Measuring systems||Resolution 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 spindles||Number 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 spindles||up to 12,000 RPM|
|Number of possible wheels per spindle||1 - 3|
|Positioning time of turret||3 sec.|
|High-frequency spindles (option)||60,000 1/min|
|Tool clamping||Clamping systems||W25, W20, B15
|Clamping diameter range||1 - 25,4 mm|
|Clamping length||up to 250 mm|
|Optional clamping systems||upon request|
|Programming system software||NUMROTOplus®|
|Dimensions of machine||L x W x H||290 x 225 x 180 cm|
|Weight||ca. 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:
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.
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.
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.
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).
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!
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.
TTB supplies peripherals, accessories and special units upon request:
The following tools can be ground or resharpened on the EVOLUTION model:
The CNC grinding machine TTB EVOLUTION is used in the following industries: