Description
Product Introduction
This 12mm × 101 × 151mm straight shank Fried Dough Twists drill produced by VANGUARD INDUSTRIAL is a lengthened high-precision universal hole processing tool:
Core parameters: the nominal diameter of the drill bit is 12mm, the effective working edge length is 101mm, and the total length of the drill bit is 151mm. It belongs to the extended straight shank Fried Dough Twists drill, which is suitable for conventional large stroke bench drill, vertical drilling machine, high-power electric hand drill and other equipment, and can meet the requirements for deep hole processing that cannot be covered by ordinary standard drill bits.
Structural advantages: The overall material is made of fully ground high-speed steel, with two large lead optimized spiral chip removal grooves for smooth chip removal and easy blockage. The standard 118 ° top angle design has excellent centering performance and is not prone to deviation during drilling. The elongated blade design ensures rigidity while achieving deeper drilling depth. The processed hole position accuracy is high, the hole wall is flat and smooth, the guidance is good, and the drilling axis is not easily skewed.
Applicable scenarios: Widely used for deep hole drilling operations on various common materials such as ordinary steel, cast iron, aluminum alloy, wood, engineering plastics, etc., it is suitable for mechanical processing, heavy equipment maintenance, steel structure installation, deep hole DIY production and other scenarios. It is a very practical basic drilling tool for deep hole processing in the industrial field.
🛠️ Usage
preliminary preparation
Mark the drilling points on the workpiece to be processed, punch a center sample punch hole to create positioning pits, and avoid the drill bit slipping and shifting during initial drilling; Clean the burrs and debris on the surface of the workpiece, firmly clamp and fix the workpiece to prevent displacement during the drilling process.
Clamping and debugging
Fully insert the straight shank of the drill bit into the drill chuck with a large clamping range 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 corresponding speed according to the processing material: 600-1000 revolutions per minute can be used for wood/plastic, 1800-2800 revolutions per minute can be used for ordinary steel, align with the pre drilled positioning pit and smoothly drill down, keeping the feed rate uniform and stable; When drilling metal materials, it is recommended to use corresponding cutting fluid for continuous cooling and lubrication to avoid overheating and annealing of the drill bit; When drilling deep holes, it is necessary to frequently exit the drill bit to clean the chips. 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 the 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 daily grinding only needs to grind the main and rear cutting surfaces to ensure that the two main cutting edges are symmetrical and the cross cutting angle is maintained at around 50 ° -55 °, 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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