- Index
- Catalog
- MACHINES FOR CREEP FEED GRINDING OF HARD-TO-MACHINE MATERIALS
- SPECIAL MACHINE WITH CNC FOR CREEP FEED PROFILE GRINDING OSH-680F3
SPECIAL MACHINE WITH CNC FOR CREEP FEED PROFILE GRINDING OSH-680F3
DESCRIPTION
Special machine for creep feed profile grinding with CNC OSH-680 is designed for creep feed grinding of profile precision surfaces of gas turbine engines blades made from heatproof and other hard-to-machine materials by abrasive grinding wheels.
Machine field of use is the enterprises of serial and large-scale manufacture.
Program of creep feed processing of parts is installed on the machine. The control over the following axes of machine coordinates is foreseen:
- longitudinal travel of wheel head – coordinate X;
- vertical travel of wheel head - coordinate Y;
- vertical travel of dressing mechanism diamond roller - coordinate V.
DESIGN ADVANTAGES
- Installation of machined parts is realized in the customer’s attachment. Part clamping is realized mechanically by hand.
- Supply of electric power to electric cabinet is centralized from the customer’s power grid, voltage is 380V ±10%, 50Hz ±1%.
- Supply of compressed air to machine is centralized from the customer’s pneumatic network, pressure is 4,5…5 bar.
- Technical specifications
- Design description
- Delivery set
- Options
- Video
- Reference-list
- Reviews
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Maximum dimensions of installed workpiece (L x B x H)
800 х 500 х 400 mm
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Table mirror width
500 mm
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Table mirror length
650 mm
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Grinding wheel diameter
500 mm
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Grinding wheel height
10...110 mm
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Grinding wheel bore diameter
203 mm
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Main drive power
28 kw
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Grinding spindle rotation frequency
800...8000 mm/min
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External diameter of installed diamond roller
100...160 mm
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Internal diameter of installed diamond roller
52H5 mm
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Hydraulic drive pump feed
3,3 L/min
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Hydraulic drive working pressure
2,0 MPA
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Hydraulic drive tank volume
25 L
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Тumber of Т-shaped slots
5 pc
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Width of slots
18 mm
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Distance between slots
80 mm
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Maximum diameter of grinding spindle cone
80 mm
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Frequency of rotation of dressing mechanism diamond roller
1000...3000 mm/min
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Range of rates of travel-longitudinal one of grinding wheel (X)
0,01...10 m/min
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Range of rates of travel -cross one of grinding wheel (Z)
0,01...6 m/min
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Range of rates of travel -vertical one of grinding wheel (Y)
0,01...6 m/min
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Range of rates of travel - vertical one of diamond roller (V)
0,01...1 m/min
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Maximum travel - cross one (Z)
500 mm
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Maximum travel - longitudinal one (X)
660 mm
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Maximum travel - vertical one of grinding wheel (Y)
500 mm
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Maximum travel - vertical one of diamond roller (V)
100 mm
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Discreteness of travel over controllable coordinates Х, Z
0,001 mm
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Discreteness of travel over controllable coordinates Y, V
0,0001 mm
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Limits of working longitudinal feeds (coordinate Х)
10...1000 mm/min
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Minimum limits of working vertical feeds (coordinate Y)
0,1 mkm/rev
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Maximum limits of working vertical feeds (coordinate Y)
6000 mm/min
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Limits of working cross feeds (coordinate Z)
5...6000 mm/min
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Minimum limits of working vertical feeds (coordinate V)
0,1 mkm/rev
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Maximum limits of working vertical feeds (coordinate V)
100 mm/min
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Working pressure of coolant treatment system
12,0 MPA
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Feed of pump of watering to the dressing zone
80 L/min
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Working pump of coolant treatment
6,0 MPA
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Coolant treatment tank volume
3200 L
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Capacity of filters-conveyors
2x220 L/min
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Feed of watering pump into cutting zone
350 L/min
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Overall dimensions (length x width x height)
6000 x 3800 x 3100 mm
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Mass
16000 kg
Machine has an arrangement with wheel head movable in longitudinal, cross and vertical direction. Base of the machine is its bed in the front part of which there is a stationary table on which basing attachment for fastening processed blades is installed.
Sled bearing column with wheel head travels in the rear part of the bed over linear guide ways in longitudinal direction.
Grinding wheel dressing by rotary profile diamond roller mechanism is installed on wheel head body.
Machine control is realized by CNC system from machine control panel located in front of working zone. Working zone of grinding is guarded by cabinet type protection in which connection of exhaust system of coolant-lubricant aerosols sucking off is foreseen.
Front wall of protection has movable opening door from plexiglass. Working zone is lighted by means of a luminaire.
Profile surfaces grinding and also constant grinding wheel dressing are produced as per CNC control program (CP) in automatic cycle, creep feed method of grinding is used in this case. CNC system “Sinumerik-840Dsl” with drives Sinamics of the firm Siemens is used on the machine. MMC support (supply) version is in Russian. Control panel is equipped with portable electronic hand-wheel NOT-STOP for travel over controllable coordinates in manual mode.
Machine is equipped with system of coolant feed and treatment with use of pumps of coolant-lubricant supply into machining zone Q = 350 l/min, Р=12 bar, coolant-lubricant supply into dressing zone Q = 80 l/min, Р=6 bar and drum-type filter with use of filter cloth.
To support the constant temperature of coolant –lubricant refrigerating unit is used on machine which supports the constant set temperature of coolant-lubricant directly in tank of clean coolant-lubricant and provides it to be not higher than 20°C.
- machine assembled;
- system of coolant feed and treatment with refrigerating plant;
- hydraulic station;
- electric cabinet;
- control panel with CNC system;
- aerosol sucking off unit;
- set of spare parts and attachments, quick wearing parts for 1 year of operation;
- abrasive wheels - 4 pcs.;
- set of mounting pads (shoes) for machine installation – 9 pcs.
SPECIAL MACHINE WITH CNC FOR CREEP FEED PROFILE GRINDING OSH-680F3
