Automotive／Various Automotive Parts
Various Automotive Parts
For Aluminum Parts / NewD
For Gears / Disc Dresser (Forming Tool for Grinding Wheel)
Achieves Stable and Long Tool Life by Measuring and Optimizing the Crystal Orientation The optimum crystal orientation of diamond is set with high accuracy, and it is rigidly bonded to cemented carbide of unique shape. A combination of the original shape tip and holder facilitates the setting of the tool accurately as with throwaway tips. The tips are designed for linear cutting and curved cutting and the profile accuracy of the tip for profile curved cutting is 5 µm. No chips will be fused or deposited on the rake face to keep producing high quality surfaces even during continuous operations. ・Automotive components (Pistons, Aluminum wheels, Compressors, Commutators, etc.) ・Plastic lenses, Resin parts ■Applications ・Less dispersion in tool life, which is a weakness of single crystal diamond tools, and 1.5 to 2 times longer tool life than conventional tools on average. ・The combination of our originally-designed inserts and holders enables easy and precise tool setting like indexable inserts. ・There are inserts for straight cutting and those for curved-surface copying. The form accuracy of the latter is 5 µm. ・The rake face is free from adhesions and accumulation of chips and maintains the high quality of worked surfaces even during continuous use. ・Exhibits high durability even during interrupted cutting. ・Unlike the conventional type with a retaining cap, there is no retaining cap to hold the diamond, enabling chips to move smoothly on the rake face, improving the machining accuracy. ■Features
・Dressing of worm-shaped grinding wheels used for generating the tooth form of automotive and machine gears ■Applications ・Extremely high tooth profile accuracy of 0.001 mm or less can be obtained. ・High ability to maintain tooth profile accuracy shape and low dresser life variation contribute to reduced grinding costs. Contributes to Higher Quality Gears and Reduced Grinding Costs As a dresser for shaping worm-shaped grinding wheels used in gear grinding, it realizes "higher precision gears" and "reduced grinding costs" by extending dresser life. ・Based on information such as workpiece gear specifications, grinding wheel shape and specifications, we design a dresser that achieves the required tooth surface quality. ■Features
Disc Dresser Contour Shape
■Holder Types
■Insert Types
Size(mm)
Types
Types
Size(mm)
Holder Specifications
I.C. φA (mm)
I.H. φB (mm)
Thickness h (mm)
Insert
Insert Specifications
Corner Radius
Clearance Angle
Holder
Right Hand Left Hand W L S h NDH-R06 NDH-L06 6 50 6.5 6 NDH-R08 NDH-L08 8 60 8.5 8 NDH-R10 NDH-L10 10 80 10 10 NDH-R12 NDH-L12 12 100 12 12 NDH-R16 NDH-L16 16 125 16 16 NDH-QR10 NDH-QL10 10 80 13 10 NDH-QR12 NDH-QL12 12 100 15 12 NDH-QR16 NDH-QL16 16 125 19 16
Long Life Type
Precision Type *1
NWD-PP2□□ -PL2□□
NWD-CL302 NWD-CP302 R0.2 NWD-CL305 NWD-CP305 R0.5 NWD-CL308 NWD-CP308 R0.8 NWD-CL310 - R1.0 NWD-CL316 - R1.6 NWD-CL320 - R2.0 NWD-PL302 NWD-PP302 R0.2 NWD-PL305 NWD-PP305 R0.5 NWD-PL308 NWD-PP308 R0.8 NWD-PL202 NWD-PP202 R0.2 NWD-PL205 NWD-PP205 R0.5 NWD-PL208 NWD-PP208 R0.8 NWD-CL416 - R1.6
L
30°
Variable Valve Grinding Wheel / MB SPARK
NDH-R1□ -L1□ -N1□ NDH-QR1□ -QL1□
7°
Both High Efficiency and Long Life Ensured in Machining Sintered Alloy and Cast Iron This is a machining system that realizes next generation double sided surface grinding that overturns conventional wisdom. Truing interval can be significantly improved compared to resin bond wheels by combined with electric discharge truing.
＋ 0.2
φ9.525 φ4.4
－ 0 4
NWD-CL3□□ -PL3□□ -CP3□□ -PP3□□
L
17°30 ▽
φB
・Electro-discharge truing realizes life about 3 times longer than general resin bond wheels. ・Long lasting cutting performance and high-wear resistance. ・Less industrial waste because conventional grinding wheel is not used for truing which reduces sludge. ■Features
11°
NDH-R0□ -L0□ -N0□
＋ 0.2
φ6.35 φ2.8
－ 0 3
NDH-R20V NDH-L20V 20 150 25 20 NDH-R25V NDH-L25V 25 150 32 25
L
NWD-CL416 -CP420
・Automotive engine components and Automotive oil pump components ■Applications
NDH-R20V -L20V -R25V -L25V
NWD-CL416- AW *2
-
■Machining Examples
Free
＋ 0.2
7°
φ9.525 φ4.4
－ 0 5.5
□Comparison with Conventional Resin Bond Wheel Machine Wheel Specification
NWD-PP2□□ -PL2□□
NDH-N06 NDH-N08 NDH-N10 NDH-N12
6 50 - 8 60 -
6 8
-
NWD-CP420
L
1） ２） ３） 4） 5） 6）
JTEKT MACHINE SYSTEMS KVD-300 ①MB SPARK #230-MED ②Resin Bond Wheel #140-B φ305-75W-3X Oil Pump Component (Powdermetal SMF4040) Water-Soluble Wheel Rotation : Stock Removal (Rough) : Feed Rate (Rough) : Stock Removal (Finish) : Feed Rate (Finish) : Spark Out : (Upper, Lower) 1,500 min -1 (C.C.W) 0.19 mm (Both Sides) 0.035 mm/sec 0.01 mm (Both Sides) 0.015 mm/sec 2 sec
R2.0
- NWD-CP420- AW *2 *1 : Precision type/cutting edge contour precision 5 µm or less *2 : Special process to cutting edge
10 80 - 10 NWD-CL3□□ -PL3□□ -CP3□□ -PP3□□ 12 100 - 12
Wheel Size Workpiece Coolant Conditions
NDH-N16 16 125 - 16 Please inquire for specifications except the above in the case of an order
When Ordering
NWD-C L 3 02 Insert Types
NDH-R 0 6 Holder Types
Discharge Electrode
Corner Radius R0.2 Tool Angle 55° I.C. φ9.525
□6
Clearance Angle 7°
Long Life Type (Precision Type is “P”)
Right Hand (Left Hand is “L”)
Examples of Cast Aluminum Wheel Machining
・Shiny machined surface is obtained by providing a uniform negative rake surface applied to the cutting edge. ■Features
■Electro-Discharge Truing Machine :JTEKT MACHINE SYSTEMS CORPORATION
・NC Turning Centre ■Machine
Comparison of Truing Time
Comparison of Load Current Values
Comparison of Wheel Wear Amount
・ NewD ■Tool
15 20 25 30 35 40 10 5
40
WA Truing
Truing Limit
6
・Cast Aluminum (AC-4CH) ■Workpiece
Resin Bond Wheel
30
4
MB SPARK
Approx. 1/3
20
2
Electro-Discharge Truing
Rotational Speed Feed Per Revolution
（min -1 ）
800〜1,200 0.05〜0.222
Good Surface Brightness
Good Surface Brightness
Resin Bond Wheel
10
（mm/rev）
0
MB SPARK
0
20 40
60 80 100 120
D.O.C. Coolant
（mm）
0.05〜1
0
0
2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000
Grinding Amount (cm 3 )
Water-Soluble Oil
MB SPARK
Resin Bond Wheel
Workpiece of Ground (Pieces)
017
018
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