Positioning Drill, Bimetallic Positioning Drill

• Customization: Available
• Saw Type: Hole Saw
• Application: Metal Saw
• Model NO.: M3/M42 HSS
• Brand: Alston
• Type: Portable
• Power Source: Electricity
• Customized: Customized
• Condition: New
• Transport Package: White Box
• Specification: SGS
• Trademark: DAVAM
• Origin: China
• HS Code: 82023990
• Production Capacity: 50000PCS/Year
• Package Size: 33.00cm * 22.00cm * 11.00cm
• Package Gross Weight: 11.000kg

Product Description

The positioning drill function of the bimetallic hole opener is an important feature in its design, which is mainly used to improve the accuracy and stability of drilling. The following is a detailed description of its functions and working principles:

1. The core role of the positioning drill
Precise positioning: The positioning drill (usually the guide drill bit in the center of the hole opener) penetrates the surface of the material at the beginning of drilling, plays a role in fixing the position and preventing the hole opener from sliding or shifting.

Guided cutting: The center point is determined by the first positioning drill to ensure that the concentric circle trajectory is maintained during the subsequent ring sawtooth cutting to avoid skewed hole positions.

2. Advantages of bimetallic structure
Material combination: The main body of the hole opener is made of two metal composites (such as high-speed steel + spring steel), taking into account the hardness and toughness of the sawtooth and extending the service life.

Heat resistance: The bimetallic welding process enhances high temperature resistance and is suitable for long-term or high-speed drilling (such as metal sheet processing).

3. Workflow
Positioning stage: After starting the electric drill, the center guide drill bit first contacts the material, penetrates and fixes the position.

Cutting stage: The guide drill continues to penetrate, and the outer ring teeth begin to cut the material to form a circular incision.

Complete the hole: After the teeth completely penetrate the material, remove the hole opener to get a round hole with neat edges.

4. Typical application scenarios
Metal processing: thin steel plates, aluminum alloys, copper pipes, etc. (need to be used with coolant).

Woodworking/Plastics: Quickly open cable holes and pipe holes, and the positioning drill can prevent wood from splitting.

Installation projects: distribution boxes, pipe fixings, and other occasions that require high-precision hole positions.

5. Precautions for use
Speed control: Metal processing requires low speed (such as 300-500 RPM), and wood can be high speed (above 1500 RPM).

Pressure adjustment: Avoid excessive downward pressure that causes the positioning drill to break, and rely on the weight of the tool to cut in slowly.

Chip removal: Regularly exit the hole opener to remove debris to prevent overheating or jamming.

6. Solutions to common problems
Broken positioning drill: Check whether the pressure is applied vertically, or the material hardness exceeds the tool load (for example, stainless steel requires a special hole opener).

Burrs on the edge of the hole: The saw teeth are worn or the speed does not match, and the parameters need to be replaced or adjusted.

The positioning drill design of the bimetallic hole opener significantly improves the operating efficiency and accuracy, especially for scenes that require batch hole opening or strict requirements on the hole position. Correctly selecting specifications (such as hole diameter, number of teeth) and matching appropriate processes can significantly reduce processing costs.