Horizontal milling and boring machine FCW

Horizontal milling and boring machine

FCW 140, 150 and 160 – horizontal milling and boring machines, which are used in dusty working environments and when machining materials such as cast iron, special plastics or GFK.

Horizontal milling and boring machine FCW – Description of main groups of machine:

Bed

Grey cast iron structure – GG 30 (DIN)
Two guide ways
Hardened guiding ribs for X travel. Part of compact linear guiding
HEIDENHAIN linear scale for X-axis located on the bed
Hardened teeth rack for X – axis feed bolted to the bed section
Limit switches for X – axis
Telescopic protective steel-sheet covers over the whole width of the bed

Saddle

Grey cast iron structure – GG 30 (DIN)
On bottom side of saddle there are 5 roller (linear) tanks on each guide way for X travel. Part of compact linear guiding
Lubrication of tanks by means of grease
Backlash-free twin-pinion gearbox driven by SIEMENS AC drive for movement in X – axis
Hydraulically controlled clamping units in each corner of column saddle

Column

Grey cast iron structure – GG 30 (DIN)
Hardened guiding ribs for Y travel. Part of compact linear guiding
Counterweight for ram’s dropping compensation inside the column; including chain pulleys for hanging of headstock
HEIDENHAIN linear scale for Y-axis located on the column
Ball screw with rotating nut for movement in Y – axis
Limit switches for Y – axis
Telescopic protective steel-sheet covers over and below the headstock

Headstock

Grey cast iron structure – GG 25 (DIN)
On backside of headstock there are 2 roller (linear) tanks on each guide way for Y travel. Part of compact linear guiding
Lubrication of tanks by means of grease
Consists of basic parts like ram, boring & milling spindle, frames, gearing etc.
Gearbox for Y – axis movement driven by SIEMENS AC drive mounted on headstock
Three-step spindle drive with gears in continuous mesh and hydraulically shifted claw clutches
Thermal stabilization of oil fillings of the headstock and main drive gearbox
Disc brake of main drive is hydraulically released

Ram

Special cast iron GGG 60 (DIN)
Ram’s movement via ball screw and AC feed drive SIEMENS
Milling and boring spindle seated inside the ram
Compact roller guiding for ram’s out travel
Automatic clamping system of attachments onto ram’s face
Automatic ram’s dropping compensation system

Ram’s dropping compensation system

FCW machines use special SKODA automatic ram compensation system
Ram out-travel is compensated by hydraulic cylinder, which is attached on the front chain of the headstock by means is connected with counterweight.
Additional ram compensation system is working on a basis of supporting of ram from bottom by means of hydraulic cylinder.
Pressures in hydraulic cylinders for both compensation sub-systems are controlled by CNC system of the machine.
Automatic ram compensation is functional along whole out-travel of ram as well as when special milling and boring attachment loaded on the ram.

Boring spindle

Special nitrided forging alloy steel, hardness HV 850
Seated in milling spindle and ram. Seating of spindle in special ball bearings with oblique contact (maker SKF / FAG). Lubrication by means of oil mist
Spindle’s movement via ball screw and AC feed drive SIEMENS
Complete spindles’ seating dynamically balanced
Oriented stop of spindle, spindle’s rotary encoder
Mechanised tool clamping chuck collet as per DIN 69872 (hydraulically operated tool release, tool clamping by disk springs)

Operator’s platform and machine control

Semi-closed operator’s platform firmly bolted to the column saddle. In front part and from above is protected against flying chips and splashing coolant based on international safety standards.
Front part of the platform is moveable in ram’s direction (Z1) for 1 000 mm
Main operator’s panel located on rotary pillar on the operator’s platform.
Auxiliary portable panel with a cable with appr. 6 meters long for set-up and test purpose incl. position read-out

Hydraulic system and equipment

Circuit for lubrication of spindle’s seating
Circuit for thermal stabilisation of headstock and feed boxes with compressed cooler of used oil
Circuit for thermal stabilisation of ram by means of controlled heating
High-pressure circuit for auxiliary functions of machine like tool releasing, ram compensation, clamping units (X, Y), gear shifting, main disk brake, etc.
High pressure air distribution for tool hollow’s cleaning, spindle seating sealing, sealing of scales of measuring system, etc.

Standard accessories

Set of tools for maintenance (according to list in Operation manual)
Set of spare parts for 2 years trouble free run of machine (according to list in Operation manual)
5 pieces of retention studs for clamping tools with tool taper ISO 50 (DIN 69871 – AD)
Checking fixture EMA
Anchoring material ŠKODA for machine (delivered without auxiliary materials for fixing like cement, grouting material etc.)