Kunshan Meiyaxing Hardware Machinery Co., Ltd. is a service-oriented enterprise specializing in the sales and operation of CNC cutting tools. We provide tungsten carbide end mills, end mill inserts, turning inserts, grooving and parting inserts, drilling and boring inserts, multi-functional inserts, threading inserts, and other indexable inserts, along with matching tool holders and tool holders. We have established long-term and stable strategic partnerships with well-known professional manufacturers of high-efficiency tungsten carbide end mills. The company possesses advanced production equipment from Swiss Rollomatic, German Walter, and Japanese Makino Seiki, as well as German Zoller-Genius 3S and American PG... With 1000 and other testing equipment, relying on our services and operations, and guided by strong R&D and production, we solve various tooling problems for processing and manufacturing enterprises. We aim to become a professional partner offering integrated tooling solutions and cost optimization services, focusing on optimizing product processing costs to achieve mutual benefit and common development. In the field of machining, deep hole machining (usually referring to holes with an aspect ratio exceeding 10) has long been considered a highly challenging problem. Traditional processes often use extended twist drills, but this method often falls short in the face of ever-increasing efficiency and precision requirements. As a high-quality and efficient tool for deep hole drilling, extended gun drills and their core component-insertions-are becoming a key technology for solving this bottleneck due to their unique advantages. It is not just a tool, but represents a high-precision, high-efficiency deep hole machining solution.
Core Advantages: Why do gun drills stand out?
Compared to traditional twist drills, the advantages of extended gun drill inserts are revolutionary, mainly reflected in the following aspects:
1. 1. Superior Machining Accuracy and Surface Quality
Gun drills, named for their original use in machining gun barrels, are inherently designed for high precision. In a single pass, a gun drill can complete both roughing and finishing. The drill's unique structure provides self-guiding during cutting. This results in holes with extremely high straightness (typically 1/1000 to 2/1000) and coaxiality, with a stable surface roughness of Ra0.4–3.2 μm and tolerance grades of IT7–IT9. Twist drills, on the other hand, are prone to skew when machining deep holes, and their surface quality is far inferior.
2. Revolutionary Machining Efficiency
The efficiency difference is the most obvious distinction. When machining deep holes with extended twist drills, retraction and chip removal are necessary after drilling approximately 1-2 times the diameter, a tedious and time-consuming process. In contrast, gun drills deliver high-pressure cutting fluid to the cutting zone through internal cooling holes and continuously flush chips out from V-shaped chip evacuation channels, eliminating the need for frequent tool retraction. Examples show that machining a Φ11×300mm hole in 45# steel takes 3 hours with a twist drill, but only 5 minutes with a gun drill, increasing efficiency by tens of times.
3. Extremely Long Tool Life
Due to smooth chip removal and sufficient cooling, gun drills wear much slower than traditional drills. Under the same working conditions, an uncoated gun drill may only last for 10 workpieces, while a gun drill with a suitable coating can last for 50-60 workpieces. In practical comparisons, the life of a regular twist drill (based on machining length) is approximately 10 meters, while a gun drill can last 300 to 500 meters.
4. Solving the Problem of Machining Large Aspect Ratios
For ultra-deep holes with extremely high aspect ratios (up to 100 or even 250 times), traditional methods are almost inadequate. Gun drills are a specialized solution for such problems, with tool holders up to 3000mm long, enabling stable deep hole machining.
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Contact us:Company name:Kunshan Meiyaxing Hardware Machinery Co., Ltd;Tel:8618962438699;Address: Room 3003, Building 3, Zhengtailong, No. 1288 Chengbei Middle Road, Kunshan City, Jiangsu Province, China;Email:myxcuttingtools@gmail.com;Website: https://www.myxcuttingtools.com
