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- EXTREMEMetal Removal
EXTREMEMetal Removal
EXTREMEMetal Removal
1. Material Toughness: Various materials are compared based on toughness and hardness. DMP35 is noted for high shock resistance, suitable for interrupted or unstable applications. DMK35 and DMK30 offer medium shock and wear resistance, while DMK25 provides the highest wear resistance but reduced shock absorption.
2. Wear Resistance: DMK25 is highlighted for outstanding edge life in high-temperature alloys. DMP35 offers moderate wear resistance, while DMK35 and DMK30 provide good wear resistance for specific applications.
3. Heat Resistance: DMK25 has the highest heat resistance, followed by DMK35 and DMK30. DMP35 offers good heat resistance due to its fine grain structure.
4. Resistance to Built-Up Edge (BUE): DMP35 provides excellent resistance to BUE, making it suitable for challenging materials.
1. Insert Selection and Maintenance: Guidelines are provided for selecting APET/XPET inserts based on material properties and application requirements. The importance of using anti-seize compounds on screws and changing insert screws every 10 inserts is emphasized.
2. Application Recommendations: Recommendations include using square shoulder milling for heavier depths of cut, utilizing climb milling, and compensating for radial chip thinning. It advises against using coolant in most milling applications to avoid thermal shock.
3. Troubleshooting: Common issues such as insert wear, chipping, and poor finish are addressed with potential causes and solutions, including adjusting speed, feed, and insert selection.
1. Feed and Speed Calculations: Formulas for calculating RPM and feed rates based on material and tool specifications are provided. A feed rate compensation chart for chip thinning is included.
2. Helical Interpolation: This technique is recommended for larger-diameter hole making, allowing for efficient material removal and flexibility in hole size variation.
1. Recommended Cutting Speeds/Feeds: Suggested operating parameters for various materials are listed, emphasizing starting at the middle of the SFM range and adjusting IPT for optimal productivity and tool life.
2. Tool Holder Recommendations: High-rigidity tool holders and reduced tool gage length are advised to improve performance and reduce tool pressure.
Detailed specifications for modular extensions and torque wrench systems are provided. Recommended feed per tooth (FPT) values for different diameters (10mm, 12mm, 16mm) and various geometries (XPET, APET) are included. Extensions are universal, compatible with Dapra and competitors' modular heads, and feature cylindrical inch shanks for adaptation to various holders. They are available in sizes to accommodate head sizes from 3/4” to 1-1/2”.
The use of carbide core modular extensions, which enhance vibration dampening and rigidity, is outlined. The use of heavy-metal modular extensions for increased resistance to vibration and deflection is described. Extensions are equipped with thru-coolant for efficient delivery of air or coolant.
High-performance milling chucks or heat/mechanical shrink holders are recommended for optimal rigidity and reduced deflection. The torque wrench system is suggested for precise tightening without binding or stripping screws.
Tables provide part numbers, shank diameters, effective lengths, and thread specifications for various modular extensions. Torque driver handles and TORX® bits are listed, emphasizing the importance of accurate torque application.
The benefits of using Dapra's torque system, which includes accurate torque application, secure grip, and leverage, are highlighted. Color-coded adapters and bits for quick identification and preset torque values for precise tightening are featured.
The importance of using the correct modular extensions and torque systems to ensure optimal performance and avoid damage to tools and workpieces is emphasized.
Catalog excerpts
90° SQUARE SHOULDER MILLS APET/XPET | SINGLE-SIDED Single-Sided APET/XPET 90° Milling Series Square Shoulder EXTREMEMetal Removal Nickel plating provides a harder casing for improved pocket durability and resistance to chip galling Cutter bodies machined from hardened steel to minimize runout and create excellent surface finishes at high feed rates Long-reach tools available with Carbide Core for enhanced rigidity and reduced deflection Precision cutter and insert combination provides longer tool life Deep gullets provide efficient chip evacuation, even on the heaviest cuts Inserts offered in both pressed and lapped versions for a combination of economy and performance
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The most economical, high-performance inserts available! • PET and XPET inserts are manufactured using CNC press technology, A providing reliable accuracy and repeatability. • Feature a high positive pressed cutting geometry for aggressive material removal rates and low horsepower consumption. APET & XPET CNC Pressed Inserts • ave a strong edge preparation for heavy chiploads. H • re available in a large variety of corner radii with a true tangential blend. A Insert Geometry Selection APET Geometry XPET Geometry Positive/negative cutting edge with T-land Cutting Edge Positive cutting edge with...
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90° SQUARE SHOULDER MILLS Cutter Bodies for 10mm APET/XPET Inserts Dapra is in the process of transitioning to all thru-coolant tooling for SSEM, SSER, and CC-SSER cutter bodies. Solid bodies are available while stock lasts, after which only thru-coolant versions will be available. “C” denotes coolant thru tool. 10MM END MILLS APET/XPET | SINGLE-SIDED Overall Length Effective Length 1.25” cutters and smaller are available without Weldon flats in limited supplies. Add WOF to end of part number when ordering. OD * Cylindrical shank – no Weldon flats. Overall Length Effective Length 10MM EXTENDED-REACH...
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(old versions for comparison) versions for comparison) (old XPHT.. Insert Size XPET Cutting Edge (Honed Edge) High Shear Fancier “cutaway” style Fancier “cutaway” style Available Coated Grades (EDP) XPET Inserts are ideal for high-performance milling of stainless steels and nonferrous materials such as copper alloys and aluminum. Also good for gummy, softer, free-machining steels. XPET-ALU lapped inserts feature a ground and lapped rake face for machining aluminum and copper alloys, bronze, brass, etc. Built-up edge is virtually eliminated. .380” .250” .031” .380” .250” .062” REQ = Available...
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90° SQUARE SHOULDER MILLS Cutter Bodies for 12mm APET/XPET Inserts Dapra is in the process of transitioning to all thru-coolant tooling for SSEM, SSER, and CC-SSER cutter bodies. Solid bodies are available while stock lasts, after which only thru-coolant versions will be available. “C” denotes coolant thru tool. 12MM END MILLS APET/XPET | SINGLE-SIDED Overall Length Effective Length Overall Length Effective Length * Cylindrical shank – no Weldon flats. L 12MM EXTENDED-REACH END MILLS WITH CARBIDE CORE R Overall Length Effective Length 12mm Shell Mills 12MM STANDARD-PITCH SHELL MILLS Overall Length...
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(old versions for comparison) versions for comparison) (old XPHT.. Insert Size XPET Cutting Edge (Honed Edge) High Shear Fancier “cutaway” style Fancier “cutaway” style Available Coated Grades (EDP) XPET Inserts are ideal for high-performance milling of stainless steels and nonferrous materials such as copper alloys and aluminum. Also good for gummy, softer, free-machining steels. XPET-ALU lapped inserts feature a ground and lapped rake face for machining aluminum and copper alloys, bronze, brass, etc. Built-up edge is virtually eliminated. .472” .312” .031” .472” .312” .062” .472” .312” .120”...
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90° SQUARE SHOULDER MILLS Cutter Bodies for 16mm APET/XPET Inserts Dapra is in the process of transitioning to all thru-coolant tooling for SSEM, SSER, and CC-SSER cutter bodies. Solid bodies are available while stock lasts, after which only thru-coolant versions will be available. “C” denotes coolant thru tool. 16MM END MILLS APET/XPET | SINGLE-SIDED Overall Length Effective Length Overall Length Effective Length * Cylindrical shank – no Weldon flats. R Overall Length Effective Length
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Cutter Bodies for 16mm APET/XPET Inserts 16mm Shell Mills 16MM STANDARD-PITCH SHELL MILLS Overall Length Socket Head Cap Screw Overall Length Socket Head Cap Screw 16MM COARSE-PITCH SHELL MILLS EDP
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90° SQUARE SHOULDER MILLS (old versions for comparison) versions for comparison) (old 16mm APET/XPET Inserts and Grades Left to right: T, N, D L XPET.. Insert Size Fancier “cutaway” style Fancier “cutaway” style APET Inserts feature a high-strength cutting edge and are ideal for high-performance milling of most harder steels and cast irons. XPET Cutting Edge (Honed Edge) High Shear APET Cutting Edge (T-Land Edge) High Strength XPET Inserts are ideal for high-performance milling of stainless steels and nonferrous materials such as copper alloys and aluminum. Also good for gummy, softer, free-machining...
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16mm APET/XPET Inserts and Grades Left to right: T, N, D XPET Cutting Edge (Honed Edge) High Shear Fancier “cutaway” style Available Coated Grades (EDP) XPET-ALU lapped inserts feature a ground and lapped rake face for machining aluminum and copper alloys, bronze, brass, etc. Built-up edge is virtually eliminated. .625” .625” .625” .625” .625” PCD-tipped inserts provide the ultimate in wear resistance for high-volume aluminum or graphite milling. Available in 1/32” corner radius only. .225” leg length for the PCD tip. REQ = Available upon request. Older coatings available upon request; may have...
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90° SQUARE SHOULDER MILLS APET/XPET | SINGLE-SIDED Utility Cutters Make the most of your APET and XPET Inserts! BCSM 15° Back-Corner Shell Mills BCSM shell mills allow the unused corner of the APET/XPET inserts to be used for general face milling – this means you get 4 usable edges per insert instead of 2! B BCSM 15° BACK-CORNER SHELL MILLS D Cutting Diameter Overall Length “C” denotes coolant thru tool. BCSM Back Corner Shell Mill CMEM Chamfering End Mills CMEM end mills are perfect for chamfer milling, providing a free-cutting positive geometry for both 30° and 45° chamfering. CMEM CHAMFERING...
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