Solid carbide NC-Center drills 90°, 120°, 142°
Precision spot drilling with VHM NC spot drills from Nachreiner
Wherever CNC and NC machines are used, achieving a high degree of precision in spotting holes for thread tapping or other drilling applications is essential. To ensure consistently high-quality results, drills must always be positioned precisely on the workpiece. Depending on the metal being processed and the shape of the workpiece, standard metal drills and twist drills can often wander within the bore, resulting in crooked or uneven initial holes. To reduce waste and guarantee flawless accuracy, using VHM NC spot drills for high-strength metal machining is highly recommended.
Unlike simple center drills, VHM NC spot drills do not have a centering tip. Since most NC and CNC machines are inherently stable and rigid, the centering tip is unnecessary, reducing drilling distance and saving time. This time advantage is especially beneficial when working with large production volumes. However, it’s important to note that a VHM NC spot drill is not intended for complete hole drilling. Lacking the necessary length and guiding chamfers for clean, fully drilled holes, NC spot drills are mainly used for precision countersinking and centering holes with high stability on NC machines, boring mills, or milling machines.
VHM NC spot drills available individually or as sets at Nachreiner
The Nachreiner Tools range includes NC spot drills in various configurations and standard sizes. Although many applications use HSS NC spot drills, some cases demand the superior quality and stability of solid carbide (VHM) NC spot drills. Unlike carbide drills that are simply brazed or attached to steel, VHM NC spot drills are made entirely from solid carbide, crafted from a single piece. This eliminates the need for a carbide carrier material, which could otherwise affect performance. VHM tools generally feature higher cutting speeds and longer tool life. Naturally, higher speeds also mean shorter machining times, making VHM NC spot drills highly valuable in industries where every second counts.
Ensure the correct point angle foryour spot drills
When ordering VHM spot drills from Nachreiner, please pay attention to selecting the correct point angle, as this can significantly affect the results depending on the application. Common point angles for NC spot drills are 90, 120, and 142 degrees, though other variations are also available. If you need a specific size or an angle not listed in our catalog, feel free to reach out. Typically, we can source the required tools or suggest viable alternatives. Additionally, we offer custom tool production to meet your precise requirements if standard options are insufficient. We understand that industry standards don’t always accommodate the creativity of our customers.