Каталог Widia достижения 2020 - страница 165

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Indexable Milling I Solid End Milling I Holemaking I Turning Grooving and Cut-Off • WGC Internal Coolant Delivery Guidelines 1. WGC system capable of 5076 psi (350 bar). 2. Toolholder delivered with four entry holes. 3. A quality filtration system is necessary to prevent blockages Port 3 in the toolholder that will affect coolant flow and performance. 4. M achines without a proper filtering system may require modification or an inline filter. • F or pressure >1015 psi [70 bar], use 10–20 µm filter. • F or pressure <1015 psi [70 bar], 50–100 µm. • U sing fine filters in low-pressure applications may affect flow rate. VDI Port Port 2 Port 1 Thread and Wrench Specifications Maximum Coolant Pressure Recommended Torque Value General Safety Guidelines 1. All safety doors and mechanisms must be in place before trying out 4. While indexing inserts, ensure the pocket is free from chips and/or dirt. the internal coolant to avoid any danger to the operator in the event Also, inspect the insert and make sure there are no blockages in the of a failure. coolant canal. 2. Use the correct pipe fittings to connect the holders to the system. 5. P eriodically check all hoses and fittings for damage and wear for proper Ensure the maximum pressure recommended for the fittings are functioning of the system. This check should also include filters. not exceeded. 3. While implementing pressure >1160 psi [80 bar], increase the pressure in steps to ensure proper functioning of insert clamping and leak-free joints. Internal Coolant Flood Coolant Internal Coolant Delivery Performance Internal coolant offers a clear advantage in tool life and chip forming/evacuation vs. external coolant in difficult conditions and in high-pressure coolant. Example: Chipbreaking in plunging of steel. Material steel ST52; 1,087 psi 2,900 psi Insert size 6mm; f = 0,25 mm/U (75 bar) (200 bar) Low Pressure — If performance is at risk due to low coolant pressure, apply internal coolant in combination with external coolant to increase volume. Recommendation to improve tool life and/or productivity: Apply high pressure coolant: 80–350 bar recommended. VDI Assemblies The WGC internal coolant delivery can be leveraged with VDI holding systems with both traditional or Quick-Change coolant connections. widia.com 163 widia.com