Pistons boring machines

Piston pin hole boring machines are the majority of our machine tools production
sold and delivered to customers all over the world. Thanks to this commercial goal achieved in the years, DAMUS brand is recorded as a leader in this special sector since 1983, the date of activity start up.
At the beginning, patented compensator device has granted a successful respect of tolerances and repeatability for the pin hole diameter, of cilindricity and roughness due to the double stroke machining process.
Afterwards the tool piloting system (DPU), obtained by progressive development of compensator device, has allowed to perform all the non cylindrical form required by piston modern evolution (trumpet, double trumpet, oval elliptic, etc)
Spindles are internally built and applied according to customers’ request: hydrodinamic, with ceramic ball bearings and grease lubrication, with extra-precise ball bearings and temperature controlled oil lubrication. Speeds up to 6.500 rpm are reached.


4 spindles / double end boring machine

Piston: automotive diesel
Cycle time: 96 sec x 2 pieces
Operations: -rough boring
-circlip grooving
-int + ext chamfering
-semi-finish and finish boring
Spindles: hydrodinamic  4.000 rpm
Load/unload: automatic by gantry loader
Features: -piloted compensators (trumpet and double trumpet)
-off-set and compr. Height regulation
-2 rotating tables 180°

 

4 spindles / double end boring machine

Piston: military vehicle
Cycle time: 122 seconds x 2 pieces
Operations: -rough boring
-circlip grooving
-int + ext chamfering
-semi-finish and finish boring
Spindles:

hydrodinamic 3.000 rpm

Load/unload: manual
Features: -linear compensator
-3 positions rotary table

 

4 spindles / 2 opposite boring units machine

Piston: motorcycle
Cycle time: 84 second x 2 pieces
Operations: -rough boring
-circlip grooving
-int + ext chamfering
-semi-finish and finish boring
Spindles: extra precise ball bearings with grease lubrication 4.000 rpm
Load/unload: manual and automatic
Features: -linear compensators
-2 rotary tables 180°

 

1 spindles / 2 opposite boring units machine

Piston: automotive diesel
Cycle time: 26 seconds
Operations: -pre-machined bore centering
-semi-finish and finish boring
Spindles: hydrodinamic 6.000 rpm
Load/unload: manual/automatic
Features: -piloted compensator (trumpet,double trumpet, oval)
-off-set and compr. height regulation
-angular orientation

1 spindle / double end boring machine

Piston: automotive gasoline
Cycle time: 34 seconds
Operations: -pre machined bore centering
-semi-finish and finish boring
Spindles:

hydrodinamic 4.600 rpm

Load/unload: manual
Features: -piloted compensator (trumpet)
- angular orientation

2 spindles / double end boring machine

Piston:

truck diesel

Cycle time: 48 seconds x 2 pieces
Operations: -pre machines bore centering
-semi-finish and finish boring
Spindles: ball bearings with temperature controlled oil lubrication 4.800rpm
Load/unload: manual
Features: -piloted compensators (trumpet)
-off set and compr.height regulation
-angular orientation


2 spindles / double end boring machine

Piston: marine motor
Cycle time: 120 seconds
Operations: -rough boring
-circlip grooving
-int + ext chamfering
-semi-finish and finish boring
Spindles: extra precise ball bearings with grease lubrication 3.600 rpm
Load/unload: manual
Features: -linear compensator
-groove recessing CNC driven
-rotary table 180°
-compr. height regulation

3 spindles / 2 opposite boring units machine

Piston: automotive diesel
Cycle time: 95 seconds
Operations: -rough boring
-circlip grooving
-int + ext chamfering
-pocket oil milling (lapping optional)
-semi-finish and finish boring
Spindles: hydrodinamic 5.000rpm
Load/unload: manual
Features: -piloted compensator (trumpet)
-groove recessing CNC driven
-transversal slide CNC driven
-eccentric spindle regulation for pocket milling axes

3 stations / 4 spindles special purpose boring machine

Piston: automotive diesel
Cycle time: 30 seconds x 2 pieces
Operations: -rough boring
-circlip grooving (pocket oil milling optional)
-int + ext chamfering ( lapping optional)
-semi-finish and finish boring
Spindles: ball bearings with temperature controlled oil lubrication 6.000rpm
Load/unload: automatic by special system
Features: -piloted compensators (trumpet,double trumpet)
-bidirection indexing rotary table (6 fixtures)
-transversal slide CNC driven
-eccentric spindle regulation for pocket milling axes