Selecting HDC636: what the production record tells you

The HDC636 series is ideal for high-speed PCB and precision drilling applications due to its TiN coating and left-hand design, which ensures efficient chip evacuation and surface finish.

Selecting the Right Tool for Your Application

When choosing the HDC636 series, the diameter range and specific geometry callout are critical factors. The series covers a diameter range from 0.15 mm to 3.72 mm, making it suitable for a wide variety of drilling tasks. However, the actual diameter of the tool must match the requirements of the job. For instance, the minimum diameter of 0.15 mm is essential for fine-pitch hole drilling in printed circuit boards, where precision is paramount. The geometry callout, such as "D1.84123.238118°," provides specific information about the flute length, land length, and helix angle, which influence the tool's performance in different materials and applications.

Key Measurements That Determine Tool Fit

Two key measurements from the production record are the diameter range and the example geometry callout. The diameter range of 0.15 mm to 3.72 mm ensures that the HDC636 series can be used in a wide range of applications, from micro drilling to larger precision holes. The example geometry callout "D1.84123.238118°" specifies the flute length, land length, and helix angle, which are crucial for chip evacuation and cutting efficiency. The flute length of 12 mm and land length of 3.2 mm help in maintaining a clean cut and reducing heat buildup, while the helix angle of 118° ensures smooth cutting action and reduced vibration.

Verifying Specifications Before Ordering

Before ordering the HDC636 series, it is essential to verify the diameter and geometry callout to ensure compatibility with your machine and material. The minimum diameter of 0.15 mm is particularly important for applications requiring high precision, such as drilling in PCBs. Additionally, the specific geometry callout should be matched to the tooling requirements of your equipment to achieve optimal performance. The series code HDC636 must be used verbatim to ensure the correct product is selected.

Verified production record

Figures above are transcribed from the production order record and the printed catalogue extracts. Confirm the held tolerance for a specific part number in the written quotation.

See the recorded geometry on the HDC636 page of this catalogue.