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The Definition of CNC Deep Hole Drilling Machine

Infrared laser side CNC Deep Hole Drilling Machine is an economical and practical plate furniture horizontal hole punching equipment. It is automatic production equipment that uses laser head induction to solve the side hole punching and slotting of fixed plate parts. It’s mainly used for the problem of slotting, vertical hole punching and side hole punching in the material processing process.

What is the CNC Deep Hole Drilling Machine?

A deep hole drilling machine is a metal-cutting machine tool, designed to produce very deep, precision holes into virtually any metal. Deep hole drilling machines enable the performance of specific tools such as BTA and gundrills, to optimize the deep hole drilling process for manufacturers. Machines are engineered to integrate the technology used by these tools, and optimize all aspects of the process, to drill deep holes with accuracy, reliability, and efficiency.

Deep hole drilling machines are ideal for a variety of sizes of deep holes and production levels, and are necessary for holes that are approximately 20:1 depth-to-diameter or greater in ratio. Dedicated deep hole drilling machines provide the tooling support, coolant delivery, and process feedback that allow manufacturers to achieve their deep hole drilling goals. These features optimize the process and prioritize deep hole drilling methods, by reducing cycle time, stabilizing tooling, evacuate chips, and preventing tool breakage and process failures, when compared to CNC machining centers.

Deep Hole Drill Guide

The deep hole drill is a drill bit specially designed for machining deep holes, which can be divided into two types: outer chip removal and inner chip removal.

The biggest drawback of deep drilling is the difficulty of heat dissipation and chip evacuation.

Introduction

The drill is specifically designed to machine deep holes.

When a hole depth ratio greater than 6 is usually referred to as a deep hole in machining.

In deep hole drilling, heat dissipation and chip removal are difficult, and the drill pipe is slender and has poor rigidity, which is prone to bending and vibration.

Cooling and chip removal problems are generally addressed by means of a pressure cooling system

Deep hole processing characteristics

Shank of drill machine has a slender and rigid rigidity, and it is difficult to discharge the chips.

Due to the tool cutting ability in the hole, cutting conditions and tool wear cannot be observed.

Drilling deep hole method

Diameter 3 ~ 20mm with a gun hole drill.

Diameter 20 ~ 65mm with high-pressure internal chip removal deep hole drilling or with the suction drill, can also be used with indexable insert staggered deep hole drilling

The Method of Use

Drilling Machine: The process of machining a hole in a solid material with a drill bit is called drilling, and the special device for drilling is called a drilling machine.

Deep hole drilling machine: Deep hole drilling machine is one of the working parts of the tool that is mostly surrounded by the machined surface.

Therefore, there are problems such as rigidity, chip removal, guiding, and cooling lubrication of the tool.

The bit of deep hole drilling machine has poor rigidity and is easy to “bias” when drilling.

Limitation by the machining hole is the reason, which is generally long, and at the same time, it is required to have the largest possible chip on the drill bit.

The groove facilitates chip evacuation, which makes the core thinner and thus less rigid.

Due to the rigidity and guiding of the drill bit (drilling, only two narrow edges of the drill bit are in contact with the hole wall), the two main cutting edges are difficult to be symmetrical, and the radial forces cannot cancel each other out.

Moreover, the first contact with the machined surface during drilling is the chisel edge with a large negative rake angle, which makes it difficult for it to enter the cutting.

Therefore, the carbide drill bit is prone to “biasing” when drilling, resulting in the axis of a drilled hole. Skew or aperture expansion, not round, etc.