Upgraded Deep Hole Machining Technology: A Full Guide to Welded Gun Drills

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Upgraded Deep Hole Machining Technology: A Full Guide to Welded Gun Drills

2026-03-25

#DeepHoleMachining #WeldedGunDrill #MechanicalManufacturing #ToolTechnology

Deep hole machining is a pivotal process in the mechanical manufacturing industry, with tool performance directly determining machining accuracy and production efficiency. Welded gun drills, as the core tool for deep hole machining, are widely used in various industries for their excellent adaptability and wide machining scope. To help manufacturing enterprises achieve accurate tool selection, standardized use and efficiency improvement, we now release a comprehensive technical guide for welded gun drills, covering structural design, model selection, application specifications and maintenance tips, providing professional technical support for the high-quality development of the manufacturing industry.

#ToolStructure #ModularDesign

Welded gun drills adopt a high-performance modular structure, composed of carbide cutting heads, alloy steel pipe drill rods and alloy steel tool shanks. The three components are precisely combined to ensure the overall rigidity, low torsional deformation and stable cutting performance of the tool, laying a solid foundation for various deep hole machining scenarios from general processing to high-precision manufacturing.

#GuideStripLayout #PrecisionSelection

The guide strip layout is the core design of welded gun drills for adapting to different machining needs, divided into three major categories with multiple refined models, realizing precise matching of materials, accuracy and processing scenarios:

  • Non-measurable universal type (G/S): G-type for all materials and high-precision occasions, S-type for short hole machining of steel parts with high surface quality;
  • Non-directly measurable asymmetric type (E/EA): E-type for low-precision processing of all materials (especially plastics), EA-type for cross-hole and inclined plane drilling;
  • Directly measurable symmetric type (A/C/D/EM): A-type for aluminum high-precision processing, C-type for stainless steel and difficult-to-machine materials, D-type for cast iron high-precision processing, EM-type for soft materials such as steel and cast iron.
#ToolShankConfiguration #Multi-scenarioAdaptation

Welded gun drills offer a rich variety of tool shank configurations to fully meet the needs of single-spindle and multi-spindle machining: three fixing methods (round shank/side clamping/inclined side clamping), full coverage of metric (6mm-40mm) and inch (12.7mm-38.1mm) diameter specifications, and differentiated structures for external and on-machine adjustment of multi-spindle equipment. The connection mode between the tool shank and drill rod is scientifically designed according to the size difference, ensuring stable connection and smooth machining.

#ToolCategory #CustomizedSolution

Based on conventional welded gun drills, a variety of special and upgraded tool types have been developed to meet personalized machining needs of different apertures and processes:

  • Solid carbide gun drills: For 0.7-10mm small-diameter machining, with good rigidity and low vibration, including solid drills, step drills and reaming tools;
  • Special welded tools: Single-edge boring tools, gun drill trepanning tools and reaming drills with front guide, adapting to special processes such as internal cooling machining, core retention and weight reduction, and high coaxial accuracy stepped hole machining;
  • Insert type gun drills: Multi-station structural design for 10mm above large-aperture machining, matching different aperture ranges with high flexibility.
#GrindingStandard #AngleDesign

Standardized grinding and precise angle design are the key to ensuring the machining accuracy and service life of welded gun drills. Welded tools require mandatory grinding, with the grinding head moving type sharpener as the preferred equipment to ensure grinding accuracy of long tools (conventional grinding range: 5mm-32mm). The tool supports customized grinding design (enlarged coolant channel, chip breaker, etc.) and exclusive angle matching for different materials (brittle materials, soft materials, stainless steel, etc.), maximizing cutting performance.

#ApplicationParameters #ToolLife

Scientific application parameters and standardized operation are essential to prolong the service life of welded gun drills. Enterprises need to match coolant flow and pressure with tool diameter, adjust cutting speed and feed rate according to machining materials, and strictly avoid ten key influencing factors such as excessive tool protrusion, poor machine tool accuracy, inappropriate cutting fluid pressure and excessively high cutting speed. Good management of cutting fluid temperature and filtration also plays an important role in ensuring machining effect and tool life.

#IndustryUpgrade #ManufacturingEfficiency

This comprehensive technical guide to welded gun drills systematically sorts out the core technical points and application specifications of the tool, providing a clear reference for manufacturing enterprises in the whole process of tool selection, use and maintenance. As the demand for high-precision and high-efficiency machining in the manufacturing industry continues to rise, welded gun drills will continue to carry out structural optimization and performance upgrading, further adapt to the diversified machining needs of various industries, and inject strong technical impetus into the intelligent and high-quality upgrade of the mechanical manufacturing industry.

#TechnicalInnovation #ProcessingPrecision
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