Group: HITACHI
Catalog excerpts
Application range Copper Taper ball end mill specifically for plastic mold reinforcing ribs Carbon steel Alloy steel Stainless steel Tool steel Pre-hardened steel Hardened steel Hardened steel 45~55HRC 55~72HRC Mold making Applications Taper ball Epoch Combination Rib Ball ® ECRB-PN A new processing method to change the common practice of rib grooving. From discharge machining to cutting machining. ECRB-PN R 0.4 R 0.5 (14 Items) ・ Lineup of tools ideal for machining rib grooves designed as countermeasures for mold sinks and short shots. For the following rib grooves Top surface width: 0.9mm Bottom width: 0.8mm Depth: Up to 12mm Top surface width: 1.0mm Bottom width: 0.8mm Depth: Up to 12mm Top surface width: 1.2mm Bottom width: 1.0mm Depth
Open the catalog to page 1Features of Epoch Combination ® Direct cutting using a new machining method By using various combinations from the small lineup of Epoch Combination Rib Balls, a variety of rib sizes can be handled, enabling machining of rib grooves with good release. Cutting machining can replace discharge machining in the region conventionally performed by discharge machining. Reciprocating cutting with high accuracy The shape of the tool used for machining rib grooves by reciprocating cutting is transferred directly. Machining can be performed with high accuracy without tool deflection, etc. Optimum...
Open the catalog to page 2Rib Ball Features of flute shape Features of flute shape 1 • The R flute cross-section has the proper shape to provide both rigidity and good chip removal characteristics. • Achieves high-performance cutting with 2-flute tip and 4-flute periphery. Poor chip removal 2 flutes on ball section Figure: Cross-section of R45° portion (R0.4) Features of flute shape 2 Flute groove ・The periphery flutes employ a 2-stage flank surface to ensure flute tip rigidity and achieve good surface roughness in high-performance cutting. 2nd flank face Flank face Coating Improved wear resistance New coating with...
Open the catalog to page 3Combination rib machining to achieve high Method of use Top surface width: 0.9mm Use end mills having the same large edge diameter as the rib groove's top surface width and the same tool diameter as the rib groove's bottom in sequence starting with the shortest flute length. For making the rib groove shown at right with a top surface width of 0.9 mm and bottom width of 0.8 mm, the following four items should be used. Item code Order of use Ball radius Size (mm) Taper angle Tool dia. Large edge dia. Flute length Shank dia. Overall length on side Combination rib machining can combine the...
Open the catalog to page 4performance, high accuracy rib grooving. Example of program creation method Machining shape Reciprocating cutting matching the curved surface of the top surface Top surface with: 1 mm Bottom width: 0.8mm Depth: 7 to 11.5 mm Situation in which the top surface and rib bottom are curved so that the rib groove depth is not uniform. Reciprocating cutting matching the curved surface of the bottom (Tool diameter: 0.8 mm; Large edge diameter: 1.0 mm; Flute length: 6 mm) Perform reciprocating cutting using a contour that matches the curved surface of the top surface. By performing machining to the...
Open the catalog to page 5Line up Epoch® Combination Rib Ball Taper ball Miniature Finishing Tip 2 futes Periphery 4 flutes Item code Ball Radius Large edge dia. Flute length Overall length Taper angle on side Cutting Conditions •When using a multi-speed spindle, etc. with fixed rotation speeds, select the condition which is closer to the rotation speeds listed below. •When using a machining center, etc. where the rotation speed can be freely set, use 20,000 rpm as the standard condition. Revolution (min-1) Ball radius R Tool dia. Dc Large edge dia. Flute length (mm) ①Adjust the cutting depth referring to the depth...
Open the catalog to page 6Field Data “High Precision Pre-finishing” Work material:S55C Tool:ECRB0810-6-PN(R0.4× Large edge dia. 1.0 × Flute length 6mm) Cutting condition:n =20,000min-1(v c=50m/min) v f =900mm/min(fz =0.0225mm/t) ap=0.01mm Wet The effects of PN coating greatly increase tool life. ● Field data 2 Work material:S50C Tool:9 pcs. ECRB0810-6-PN (R0.4×Large edge dia. 1.0 × Flute length 6mm):5 pcs. ECRB0810-12-PN(R0.4×Large edge dia. 1.0 × Flute length 12mm) pcs. :4 Cutting time:13.4 hours (Rib grooving only) Cutting condition:R0.4×Large edge dia. 1.0mm × Flute length 6mm n=20,000min-1 v f...
Open the catalog to page 7The diagrams and table data are examples of test results, and are not guaranteed values. "Epoch" and “ ” are a registered trademark of Mitsubishi Hitachi Tool. Attentions on Safety 1. Cautions regarding handling (1) When removing the tool from its case (packaging), be careful that the tool does not pop out or is dropped. Be particularly careful regarding contact with the tool flutes. (2) When handling tools with sharp cutting flutes, be careful not to touch the cutting flutes directly with your bare hands. 2. Cautions regarding mounting (1) Before use, check the outside appearance of the...
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