Serdi Profile single point CNC valve seat cutting machine

• Machining processSingle Point CNC
• Centering technologyTriple air cushion
• Seat to seat moveManual
• Valve seat capacity14 to 120 mm - 0.55" to 4.72"
• ProductionSmall or medium volume

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• Automotive
• Motorcycle
• Heavy duty
• Marine
• Racing
• Stationary engine

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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.

Serdi Profile

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.