Machining process
Centering technology
Seat to seat move
Valve seat capacity
Production
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single point CNC
Valve seat machines
Valve seat machines
PROFILE
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Machining process
Single Point CNC
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Centering technology
Triple air cushion
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Seat to seat move
Manual
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Valve seat capacity
14 to 120 mm - 0.55" to 4.72"
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Production
Small or medium volume
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Automotive
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Motorcycle
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Heavy duty
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Marine
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Racing
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Stationary engine
The latest single point CNC Machine from Serdi. More than 10 years of experience in single point technology condensed into the most advanced machine on the market. Ease of use, speed and accuracy brought to a whole new level, leaving all competition behind. Extremely versatile machine appropriate for machining any kinds of cylinder heads, from small motorcycle to large stationary engine. It does it all.
gantry design
The whole spindle and centering system assembly moves up and down along rigid preloaded guideways. Manual vertical movement guaranties the ease of pilot insertion. The sturdy design coupled with a short spindle travel greatly increase global rigidity. Safe ‘‘normally closed’’ clamping system for increased safety : The gantry is clamped when no pressure is applied. Perfectly balanced spindle whatever the working height.
Triple air cushion centering
SERDI’s proven triple air float and the built-in motor combination results in an unequaled centering accuracy. 30% floating mass reduction (all floating parts when centering) compared to the previous single point generation. New machine architecture greatly reduce the lever arm between the pilot and the floating system. Pilot flexion due to the floating mass is thus kept to a minimum.
Built-in motorspindle
Built-in motor-spindle with maximum torque from 0 to 3000 rpm. Very high power density Swiss made synchronous spindle motor. High precision life lubricated spindle bearings. High dynamic Siemens servomotors with absolute encoders on both Z and U axis. Preloaded precision ball screws on both Z and U axis. The only machine on the market with CNC controled spindle speed, allowing a constant cutting speed at any point of the cutting profile. Serdi designed kinematics allow very high machining rates with unmatched accuracy.
CONVERSATIONAL CNC
Siemens 840dsl CNC / Sinamics S120 Drives / Simotics S Servo motors for a perfectly coherent and integrated solution. Multi-touch HMI screen. Sinumerik OS with custom designed interfaces. Very easy conversational programming. Sinumerik Openness allows for continuous software improvement and custom features development. Connectivity and network integration : USB and Ethernet. Ethernet connection allows for remote monitoring, data transfer and teleservice.
Facing head
Facing head with automatic balancing system. An internal balancing system compensates the carriage mass travel to avoid any vibration when the spindle rotates, even at the highest speeds. LVDT gauge to guarantee the same accurate machining depth on all the seats, regardless of the cylinder head inclination. Hydraulic expansion pilot holder, combining high clamping force with the highest concentricity level. Fits all standard Serdi Pilots.
U and Z axis interpolation machining
Interpolation of U and Z axis by numerical control allows shaping any valve seat profiles, compound of any segments or radii. Large U-axis travel of 22 mm (0.86 in) reduces the need for tool change/adjustment. Concave shapes to increase the exhaust gas speeds (Venturi) are also possible. This high geometry flexibility combined with the few cutting efforts generated by the single point cutting makes this machine ideal for prototyping engines as well as medium volume production.
Tooling
High tooling flexibility allowing in addition to valve seat machining operations such as cam bucket bore machining.
INTEGRATED VACUUM TESTER
Graduated vacuum tester from 0 to -1 bar, linked to a vacuum generator on one end and to a foam pad on the other, in order to make a fast valve sealing check with the valve mounted on the valve seat, before disassembling the cylinder head from the machine.
Chip-guard enclosure
Chip projection is limited thanks to three covers surrounding the facing head. The front cover is removable
Fixture table
The two parallel bars are mounted on two preloaded guideways. When the machine is not supplied with air or when machining, the fixture table is automatically locked for a higher safety level. Accomodates any Serdi fixture.
Clamping fixture
The machine is supplied with a universal clamping system allowing to setup and clamp cylinder heads with both vertical and inclined valve guides. Cylinder heads can rest straightly on parallels or stand in the tilting cradles. Several types of spacers or clamping bars are supplied to adapt the most common cylinder heads. The cradle can tilt from +42° to -15° from vertical.
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Space requirement
Width :
2800 mm - 110"
Depth :
1400 mm - 55"
Height :
2400 mm - 98.5"
Net weight approx. :
1500 Kg - 3306 lbs
Head stroke
Lenghtwise :
990 mm - 39'’
Crosswise :
50 mm - 1.96"
Vertical :
330 mm - 13"
Centering plane air cushion travel :
14 mm - 0.55"
Maximum cylinder head size
Width (on parallels with standard 190 mm pilot) :
500 mm - 19.7"
Length (on parallels with standard 190 mm pilot) :
unlimited
Heigth (on parallels with standard 190 mm pilot) :
400 mm - 15.3"
Length (single or dual axis rollover fixture) :
1050 mm - 41.3"
Width (single or dual axis rollover fixture) :
300 mm - 11.81"
Heigth (single or dual axis rollover fixture) :
190 mm - 7.48"
Spindle
Spindle speed :
0 to 3000 rpm
Cutting speed :
0 to 300 m/min
Spindle travel :
120 mm - 4.73"
Spindle feed (Z axis) :
0 to 3000 mm/min
U axis travel (radius) :
22 mm - 0.86"
Carriage feed (U axis) :
0 to 2000 mm/min
Machining capacity
Valve seat capacity :
14 to 120 mm - 0.55" to 4.72"
Connections
Electric power supply :
6.3kVA-3x400V+PE-50/60 Hz
Pneumatic air supply :
6 bars
Table stroke
Table travel :
210 mm - 8.26"