Description
Product Introduction
This 1-inch 101151mm straight handle Fried Dough Twists drill produced by VANGUARD INDUSTRIAL is a large-scale high-performance metal drilling tool:
Core parameters: The nominal diameter of the drill bit is 1 inch (approximately 25.4mm), the blade length of the working part is 101mm, and the total length of the drill bit is 151mm. It adopts a standard straight handle structure design and is suitable for heavy drilling equipment such as industrial drilling machines and rocker drills with high torque.
Structural advantages: The overall material is made of fully ground high-speed steel, and the two optimized spiral chip removal grooves are smooth and not easy to block chips. The standard 118 ° top angle design has excellent centering performance, and it is not easy to deviate during the drilling process. The processed hole position accuracy is high, the hole wall is flat, the cutting edge rigidity is strong, and it can withstand high torque drilling operations.
Applicable scenarios: Widely used for large-scale drilling of heavy workpieces such as steel, cast iron, and thick metal plates, suitable for industrial scenarios such as mechanical manufacturing, steel structure installation, and heavy equipment maintenance that require deep hole and large aperture machining.
🛠️ Usage
preliminary preparation
Mark the drilling points on the workpiece to be processed, and use a center drill to create positioning pits at the marked points to avoid slipping and deviation of the large-diameter drill bit during initial drilling; Clean the burrs and debris on the surface of the workpiece, and use fixtures such as pressure plates and V-shaped irons to firmly lock the workpiece on the workbench to prevent displacement during high torque drilling.
Clamping and debugging
Fully insert the straight shank of the drill bit into the compatible large-sized drill chuck to ensure stable clamping without looseness. After clamping, confirm that the radial runout of the drill bit during rotation is controlled within a reasonable range to avoid problems such as large hole diameter and drill bit fracture caused by non concentricity.
Drilling operation
Adjust the equipment speed to the low speed range suitable for large-diameter drill bits, align with the pre drilled positioning pit and smoothly drill down, while maintaining a uniform and stable feed rate; Continuously injecting metal cutting fluid during the drilling process to cool and lubricate the drill bit, avoiding overheating and annealing of the drill bit; When the drill bit is about to drill through the workpiece, adjust the feed rate appropriately to prevent the drill bit from being stuck and damaged by chips.
Final maintenance
After drilling is completed, promptly clean the residual chips in the spiral groove of the drill bit, check the wear of the cutting edge, and standardize the grinding in a timely manner when slight wear occurs, which can greatly extend the service life of the drill bit; When stored for a long time, place the drill bit in a dedicated storage box to avoid collision and damage between the cutting edges.
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