Drill for Wheel Hubs. Solid Carbide Drill MHE

Transcription

1 . Update B3G Expanded New Grade Solid Carbide Drill Uniue design provides superior hole accuracy for shallow hole drilling. Effective drilling of hub bolt holes can be achieved. Additional new grade DP30 achived long tool life!

2 Solid Carbide Drill youtline For machining of the bolt holes of hubs, general-purpose drills are widely used. However, these are not highly productive due to the following problems. achips elongate and damage the periphery of drilled holes and lead to poor surface finishes. aplastic deformation can occur leading to a work hardened layer generating in the wall of the hole. This can result in a poor press fitting of the hub bolts. adue to poor surface finish, a reaming operation maybe reuired to finish the holes. The solid carbide drill overcomes the above problems as it exhibits excellent chip control and offers efficient, high precision drilling due to the use of low resistance cutting edges and low helix angle. Wheel hub Hub bolt Hole location Axle yfeatures Low Cutting Edge Height Reduces the cutting torue Small Point Angle Improves the initial hole entry H Narrow Flute Improves the chip breaking properties Low Cutting Edge Height Narrow Flute Low Helix Angle Offers high tool rigidity and stable hole accuracy Drill WSTAR Drill Drill WSTAR Drill Reduces cutting torue Finely breaks up chips 1

3 Solid Carbide Drill y Straight Type ød1 ød4 y Dimensions Stock Dimensions (mm) Stock Dimensions (mm) D1 (mm) DP30 VPTF D1 (mm) DP30 VPTF Made to order product Product Range Drill dia. : ø ø mm Drilling depth : L/D<1 (L: hole depth; D: drill dia.) Dimensions : Flute length is less than 4 times the drill diameter; Shank length will be determined based on present standards. Tool grade : DP30, VPTF Note) Contact Mitsubishi Materials for any geometry that is not shown above (e.g. different diameters and flute lengths can be made to order). Order Number When placing an order clearly indicate the following information. Drill dia. (D1), Overall length (), Shank dia. (D4) Ex) M H E 00 x 4 x Drill dia..00 mm Overall length 4 mm Shank dia..0 mm The flute length will be determined by Mitsubishi Materials. Specify the hole diameter (including the hole tolerance) when placing an order. Notes When Regrinding and Recoating the Drill When carrying out regrinding, it is necessary to recoat the drill to maintain tool life. When reuesting regrinding and recoating of the drill, contact Mitsubishi Materials sales staff. 2

4 y Step Type ød2 ød1 ød4 L4 y Dimensions Stock Dimensions (mm) D1 (mm) DP30 VPTF D2 L4 D : Made to order product. y Chamfer Diameter Reference Range : Applicable Range Max. Chamfer Cutting Edge Dia. (mm) D1 (mm) Chamfer Cutting Edge Dia. D2 (mm) y Step Length Range : Applicable Range y Flute Length Range : Applicable Range D1 (mm) Step Length L4 (mm) D1 (mm) Flute Length (mm) Order Number When placing an order clearly indicate the following information. Drill dia. (D1), Chamfer dia. (D2), Overall length (), Shank dia. (D4) Ex) M H E 00 x 00 x 1 x Drill dia..00 mm Chamfer dia..00 mm Overall length 1 mm The flute length will be determined by Mitsubishi Materials. Specify the hole diameter (including the hole tolerance) when placing an order. Notes 1. These products are made to order. 2. Specify the hole diameter (including the hole tolerance) when placing an order. Shank dia..0 mm 3 Product Range Drill dia. D1 : ø ø mm Chamfer dia. D2 : D2/D1<1.6 and up to ø mm Overall length : To be determined based on the straight type drill. If the chamfer diameter is ømm, the maximum overall length is 2 mm. Shank dia. D4 : Same as the chamfer diameter up to ø mm. Increases in 0.5 mm increments for the diameter larger than ø mm. Tool grade : DP30, VPTF Notes When Regrinding and Recoating the Drill When carrying out regrinding, it is necessary to recoat the drill to maintain tool life. When reuesting regrinding and recoating of the drill, contact Mitsubishi Materials sales staff.

5 ycutting Performance Hole Accuracy Chip Geometry.950 Drill Diameter (mm) Hole diameter tolerance within μm! Cutting Length (m) <Cutting Conditions> Workpiece: JIS S53C Cutting speed: m/min Feed: 0. mm/rev Hole depth: 6 mm Coolant: : New product : 1st regrind : 2nd regrind : 3rd regrind Chip breaking properties The workpiece surface is not damaged due to the fine chips that were generated. Result of Reducing the Cutting Torue Prevents the generation of high cutting temperatures and the formation of the work hardened layer. Work hardened layer Depth of work hardening !m Tough Drill Tool Grade Features of new grade DP30 Special multilayer PVD coating for drills using proprietary crystal control technology enables double the tool life compared with earlier products. Vickers hardness (HV) Conventional drill: 367HV drill: 291HV Conventional drill: Work hardened layer generated. Coated Features of VPTF MIRACLE coated VPTF has a high welding resistance, making it suitable for machining a wide range of workpiece materials from mild steels and carbon steels, through to stainless steels and cast iron Distance from the machined surface (!m) drill: No work hardened layer The drill can prevent the formation of a work hardened layer (that usually cause tool damage), which makes it possible to produce high uality products. Oversize (!m) Oversize Comparison Oversize of Drills Competitor A General purpose drill Workpiece : JIS SC Cutting speed: 74.5 m/min Feed : mm/rev Hole depth : 7 mm External coolant Competitor B General purpose drill Competitor s hub drill Recommended Cutting Conditions Work Material Hardness Cutting Speed (m/min) &.0 &.0 mm Feed (mm/rev) P Carbon Steel 0 280HB 75 ( 90) 0.25 ( ) (Note) The above cutting conditions should be used as a guide and need to be adjusted according to the machine rigidity, workpiece clamping and shape. Due to reduced oversize, the drill can produce holes without reaming. 4

6 Solid Carbide Drill Application Examples Tool. x 1 x (DP30).8 x x.8 (DP30) Carbon Steel (JIS SC) Carbon Steel (JIS SC) Workpiece 9 Component Inner face of hub Outer face of hub Cutting Conditions Cutting Speed (m/min) Feed (mm/rev) Revolution (min -1 ) Coolant Machine Type Results Drill Normal wear Drill Normal wear Conventional Conventional Tool. x 4 x (VPTF). x 4 x (VPTF) Carbon Steel (JIS SC) Carbon Steel (JIS SC) Workpiece 6 Component Inner face of hub Inner face of hub Cutting Conditions Cutting Speed (m/min) Feed (mm/rev) Revolution (min -1 ) Coolant Machine Type Results Drill Normal wear Drill Normal wear Competitors Competitors For Your Safety adon't handle inserts and chips without gloves. aplease machine within the recommended application range and exchange expired tools with new ones in advance of breakage. aplease use safety covers and wear safety glasses. awhen using compounded cutting oils, please take fire precautions. awhen using rotating tools, please make a trial run to check run-out, vibration and abnormal sounds etc. agrinding or heating of cutting tools produces dust and mist. Inhaling large amount of dust or contacting with eyes and skins may harm your body. MITSUBISHI MATERIALS CORPORATION Area Marketing & Operations Dept. KFC bldg., 8F, 1-6-1, Yokoami, Sumida-ku, Tokyo 0-00, Japan TEL FAX Mitsubishi Carbide Home page : (Tools specifications subject to change without notice.)..(-)