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Valve seat inspection

REVO™ valve seat and guide measurement and analysis
REVO valve seat measurement

The measurement of valve seats and guides has traditionally been very challenging, involving time-consuming methods that are often a compromise and not capable for the task.

REVO technology changes this situation dramatically, making it possible to collect large amounts of data very quickly, from which the analysis parameters for both the valve seat and the valve guide features can be calculated. The method performs exceptionally well in repeatability and reproducibility tests.

Data evaluation

The valve seat and guide analysis utility that is embedded in Renishaw's MODUS metrology software is utilised to evaluate the scan data and return data regarding the attributes listed below:-

  • Form error of the valve seat
  • Circularity profile of the seat at any specified height
  • Valve seat width
  • Runout of the seat to the guide bore axis
  • Diameter of the guide
  • Straightness of the guide cylinder
  • Cylindricity of the guide
  • Circularity profile of the guide cylinder at any specified height
  • Form errors of the cones, above and below the valve seat cone

The two types of scanning used to inspect valve seats and guides are...

Helical scans

The measurement process involves two helical scans, one on the valve guide bore and the second over the valve seat area.

On the guide a single helical scan is used with a typical pitch of 0.5 mm, at a scanning speed of 150 mm/s.

Adaptive scanning

This valve seat scan utilises REVO's adaptive scanning capability, which allows a single scan command to cover the areas above and below the critical valve seat surfaces.

On the valve seat a single helical scan is also used, with a typical pitch of 0.1 mm, at a scanning speed of 500 mm/s.

THE DATA COLLECTION PROCESS TAKES APPROXIMATELY 20 SECONDS!

REVO valve seat and stem scanning

Part number
MODUS online
MODUS - touch-trigger (IGES input, STEP input, collision detection, MODUS organiser)
A-5639-0001
MODUS - 3-axis scanning (IGES input, STEP input, collision detection, MODUS organiser)
A-5639-0003
MODUS - 5-axis scanning (IGES input, STEP input, collision detection, MODUS organiser)
A-5639-0005
MODUS offline
MODUS - touch-trigger offline
A-5639-0101
MODUS - 3-axis scanning offline
A-5639-0103
MODUS - 5-axis scanning offline
A-5639-0105
MODUS options
MODUS airfoil
M-5639-0008
MODUS point cloud sectioning (MPCS)
M-5639-0225
MODUS surface texture
M-5639-0226
MODUS surface texture advanced
M-5639-0227
MODUS gear
M-5639-0215
MODUS spline
M-5639-0216
MeasureMax clientM-5639-3500
MODUS upgrades
MODUS touch-trigger to 3-axis scanning upgrade
A-5639-5001
MODUS touch-trigger to 5-axis scanning upgrade
A-5639-5002
MODUS 3-axis scanning to 5-axis scanning upgrade
A-5639-5003
MODUS CAD options
VDA-FS import / export
M-5639-0010
CATIA V4 import
M-5639-0020
CATIA V4 import / export
M-5639-0021
CATIA V5 import
M-5639-0022
CATIA V5 import / export
M-5639-0023
CATIA V5 manufacturing option (includes CATIA V5 import)
M-5639-0024
Unigraphics import
M-5639-0030
Unigraphics manufacturing option (includes Unigraphics import)
M-5639-0031
Parasolid import / export
M-5639-0032
Pro/E import
M-5639-0040
Pro/E manufacturing option (includes Pro/E import)
M-5639-0041
SolidWorks import
M-5639-0050
MODUS educational
Education bundle 1 (5 seats, maintenance contract required)
A-5639-0251
Education bundle 2 (10 seats, maintenance contract required)
A-5639-0252
Education bundle 3 (20 seats, maintenance contract required)A-5639-0253
MODUS maintenance
MODUS - touch-trigger
M-5639-0501
MODUS - 3-axis scanning
M-5639-0503
MODUS - 5-axis scanning
M-5639-0505
MODUS - touch-trigger offline
M-5639-0601
MODUS - 3-axis scanning offline
M-5639-0603
MODUS - 5-axis scanning offline
M-5639-0605
MODUS airfoil
M-5639-0508
MODUS point cloud sectioning (MPCS)
M-5639-0725
MODUS surface texture
M-5639-0726
MODUS surface texture advanced
M-5639-0727
MODUS gear
M-5639-0715
MODUS spline
M-5639-0716
VDA-FS import / export
M-5639-0510
CATIA V4 import
M-5639-0520
CATIA V4 import / export
M-5639-0521
CATIA V5 import
M-5639-0522
CATIA V5 import / export
M-5639-0523
CATIA V5 manufacturing option (includes CATIA V5 import)
M-5639-0524
Unigraphics import
M-5639-0530
Pro/E manufacturing option (includes Pro/E import)
M-5639-0531
Parasolid import / export
M-5639-0532
Pro/E import
M-5639-0540
Pro/E manufacturing option (includes Pro/E import)
M-5639-0541
SolidWorks import
M-5639-0550
Educational bundle 1 annual maintenance
M-5639-0751
Educational bundle 2 annual maintenance
M-5639-0752
Educational bundle 3 annual maintenanceM-5639-0753
APEXBlade
APEXBlade (stand-alone licence)
A-5639-0220
APEXBlade (add-on to existing MODUS licence)
M-5639-0220
APEXBlade maintenance
M-5639-0720
SurfitBlade
SurfitBlade (stand-alone licence)
A-5639-0221
SurfitBlade (add-on to existing MODUS licence)
M-5639-0221
SurfitBlade maintenanceM-5639-0721