Machine base

Optimized vibration damping achieved using Polymer-concrete.

Temperature coefficient consistent with all major set up components. Thermo-symmetric construction elements (cubical base profile)

Embedded coolant channels with one central coola-nt outlet
.
Parallel distributed T-Slots (raster 185 mm) guaranteeing flexibility in setup and rebuilt.

Efficient utilization of floor / production space. Same setup possibility on smaller platform.

Function related integration e.g. Machine base with integrated coolant channels for hydrostatic oil coverage (central in- and outlets)

"Hook"-machine
Variable transport accommodation, support and carrying frame of the electrical cabinet.

The possibilities are highly diverse and flexible.

Challange our expertise for your manufacturing solutions!

Locating in a ,V-block‘ fixture

No workpiece spindle head, no tailstock A well-proven work holding fixture where the workpiece is located on diamond (or carbide) inserts and driven against an axial deadstop by rollers set at an angle.
Loading / unloading workpieces into the V-block fixture via high speed loading device.

Machine frame and Enclosure

Modular Machine Frame - Enclosure
Used for supporting internal automation solution (Key-Hole).Used as cable channels and tracks.

Supporting Element for door- and enclosure modules, Adjustable layout, arrangement and interchangeability of door- and enclosure modules.

"Concertina" Concept for flexible and modular enlargement of the machine base used in linkages and turnkey solutions.

Leakage
Embedded coolant collecting tracks as interface to the machine base.
Inward positioned side panels doors and service openings to prevent dripping.

Interface with peripherals accessories Gauging Easy integration ability for pre-, in- and post process gauge Stations

Automation
Variable bracing of automation components using machine base or frame.
Open structure enables flexible layout of keyhole passover Positions or opening for gantry solutions.

Supply Modules

Integration of Aggregates at the Supply Module
Hydrostatic slides used for all axes
Hydrostatic work piece spindle head
Hydraulic unit (gauge systems; grippers; etc.)
Supply for plain bearing components

assembled crane hook module Using pull out and extendable drawer systems Safety catch basins for lubrications overflow only one electrical outlet, Fill levels , Filter- and Pressure monitoring utilized through "Profi"-Bus systems Warning message appears on machine control display (control as central information platform).

Included in future versions:
Integrated coolant high pressure pump. Chiller - refrigerator units.

Short Stroke Oscillation

Linear Short Stroke Oscillation Slide,hydrostatically born for increased form, accuracy and surface finish quality for internal grinding.

Oscillation in seat direction, without interpolation error

Reduction in movable mass

Installed Synchronic linear motor using absolute linear encoders (glass scales)

Progressive fluid flow regulation for increased stiffness

Technical data

Hydrostatic bearing 
Maximum stroke30 mm
  
Preloaded bearing achieved through full contact guide
  
Temperature control of linear drive+-0.2oC
Temperature control hydrostatic oil+-0.2oC
progressive fluid flow control  
Straightness deviation< 0.1 µm
Stiffness in feeding direction 
Stiffness vertical of feeding direction 
Maximum frequency30 Hz
  
Dependent from the Amplitude and weight of the high frequency spindle
  

Hydrostatic Linear Axis
Goal

Hydrostatic Linear axes to increase overall work piece quality
Straightness at the components <0.1µm at 25mm lenght.
Exchange of the hydrodynamic guideways at the external grinding machines.
Increase stifness at guide ways
Increase rapid speed from 10m/min to 40m/min

Design of a hydrostatic linear axis with linear direct drive

Hydrostatic Work Piece Spindle Head

Ultra precise hydrostatic work piece spindle using a torque motor and high precise CNC controlled C- axis (360 degrees).

Used for highly precise grinding tasks!
Technical data
Hydrostatic bearing
Direct drive: Torque motor

C-Axis with encoder  
rpm (1/min)0-6000
Constant torque24 Nm
Concentricity radial< 0.05 µm
Concentricity axial< 0.05 µm
Run out at component< 0.05 µm
Spindle bore28 mm
Stiffness radial340 N/µm
Stiffness axial370 N/µm

Piezo Tailstock

Tailstock adjustment achieved by using a Piezo element:

Smallest increment<0.1µm
Adjustable distance:50µm
No back lash
In-process compensation of the taper fault



Modular System with 3x Machine Base Sizes



 
Bahmueller Technologies, Incorporated, 521 Eagleton Downs Drive, Suite F, Pineville, North Carolina 28134. Tel:704.587.3506. Fax:704.587.3508
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