Automotive／Engine
Engine Cylinder Head and Block Machining / PCD Rotating Tool
Touring Examples of PCD Rotating Tool for Cylinder Head Machining
・Multi-Step profile tools consolidate the hole finishing process. ・Achieve precise and stable accuracy by utilizing the characteristics of diamond material with sharp edges and abrasion resistance. ・Combining the optimal design and machining conditions can improve accuracy and machining time. ■Features Aluminum parts for powertrain applications are becoming more complex in shape and getting thinner for improvement of fuel efficiency and lightweighting. We contribute to various needs with design proposals suitable for further control of machining time and costs, such as process consolidation of multi-step holes, one-shot machining of roughing and finishing, and high feed with multi-blades.
Finishing multiple holes on the coaxiality line with a single multi-step reamer reduces machining time and ensures high coaxiality by consolidating processes. ■PCD Multi-Step Reamer for Finishing Solenoid Holes
The multiple cutting edges at the start of machining ensure the constraint of the cutting tool. Stable machining quality is achieved even for shapes with a difference in hole diameter. ■PCD Reamer for Finishing Spark Plug Holes
High precision grooving can be expected due to a cutting edge design that reduces Chatter caused by cutting resistance. ■PCD Side Cutter for Machining Cam Bearing Oil Grooves
High quality hole finishing with Chatter suppression is realized by the design considering the guide pad distribution and dynamic balance. ■1-Flute PCD Reamer for Finishing Valve Lifter Holes
■Multi-Step Finishing Difference in Performance According to Specifications and Shank Material 25 Coaxiality Roundness
■Multi-Step Finisher (Valve Guide/Sheet Parent Metal)
We propose a design that prevents chips from being fitted into the water jacket, and also takes into consideration a chatter-free cutting surface. ■PCD Endmill for Machining Spring Seat Surface
The design considering the quality degradation of interrupted areas (chips and grooves in machined holes) stabilizes machining accuracy. ■PCD Reamer for HLA Hole Finishing
Machining Time
60
50
20
40
15
30
Valve Seat Hole
10
■Example of HLA Hole Finishing Process
20
Horizontal Spindle Machining Center (HSK-A63)
Machine
5
10
Cutting Speed Vc (m/min)
188 (φ12)
The high shape accuracy of PCD material, which is suitable for shape creation, stabilizes machining accuracy in the next process (finishing). ■PCD Ball Endmill for Machining Cam Bearings
0
0
Feed Per Revolution f
0.34
4-Flute (Carbide)
1-Flute (Carbide)
4-Flute (Hardened Steel)
(mm/rev)
Valve Guide Hole
Stock Removal
(φ)
0.5
■Machining Conditions
Coolant
JIS A1 Class Emulsion
※HLA: Hydraulic Lash Adjuster Abbreviation
4-Flute (Hardened Steel)
4-Flute (Carbide)
1-Flute (Carbide)
Specification
Machine
Horizontal Spindle Machining Center (HSK-A63)
Cutting Speed Vc (m/min)
400（φ36）
The multi-blade design achieves high precision and shortens machining time for simple hole drilling. ■PCD Reamer for Finishing Sensor Holes
Feed Per Revolution f (mm/rev)
0.3
0.075
0.3
Part Print
Cross Section of Machining Tool
Coolant
JIS A1 Class Emulsion
Highly rigid shank material is used to finish multi-step holes (Valve guide/Sheet parent metal) in one shot. ■PCD Reamer for Multi-Step Finishing
High quality cutting edges enable both high precision and high efficiency machining.
※φ11-φ36 finish processing example
PCD endmill for rough machining with stock removal to achieve high precision finishing of the valve guide press-fit hole and throat hole in the next process. ■PCD Endmill for Rough Machining of Valve Guide Press-Fit Hole + Rough Machining of Throat Hole
The high rigidity of the shank and accuracy of the cutting edge achieves coaxiality and cylindricity. ■Example of Multi-Step Finishing
Machine
Horizontal Spindle Machining Center
Rotational Speed s (min -1 ) Feed Rate F (mm/min) Feed Per Tooth fz (mm/z)
6,000 2,880
0.12
The high quality full-form cutting edge and the layout design that suppresses cutting resistance improve the precision of the throat shape and avoid chip entrapment problems, contributing to higher productivity. ■PCD Endmill for Throat Hole Finishing
Stock Removal (φ)
0.6
Coolant
JIS A1 Class Emulsion
011
012
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