Design And Development Of An Angular Drilling Fixture For Precision Machining Applications

Abstract

This Research Paper Presents The Design, Development, And Implementation Of An Angular Drilling Fixture For Precision Machining Operations. Angular Drilling Fixtures Are Specialized Work-holding Devices That Enable Accurate Drilling At Predetermined Angles On Workpieces, Addressing Significant Challenges In Conventional Drilling Operations Including Manual Alignment Errors, Inconsistent Hole Positioning, And Reduced Productivity. The Proposed Fixture Incorporates A Rigid Base Plate, Precision Locating Elements, Efficient Clamping Mechanisms, And An Angular Support Block Designed For A 30-degree Drilling Application. The Design Follows The 3-2-1 Locating Principle To Constrain All Six Degrees Of Freedom, Ensuring Deterministic Positioning And Repeatability. The Fixture Was Fabricated Using Mild Steel For The Base Plate And EN8 For Critical Components, With Hardened Drill Bushings For Tool Guidance. Experimental Validation Demonstrated Linear Accuracy Of ±0.1 Mm, Significant Reduction In Setup Time, And Consistent Hole Quality Across Multiple Workpieces. The Fixture Successfully Eliminates Manual Measurement Requirements, Reduces Operator Skill Dependency, And Enhances Production Efficiency In Mass Manufacturing Environments. Applications Include Automotive, Aerospace, And General Manufacturing Sectors Requiring Precise Angled Holes For Assembly And Functional Purposes.

Keywords