Annular Burr Cutter Layout for In-Cycle Friction Welding Deburring
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Solution Overview
Problem
Existing friction welding machines face challenges in efficiently removing burrs immediately after welding due to complex burring apparatus structures, which lead to increased time consumption, burr hardening, and potential misalignment of work pieces, resulting in inefficient welding and burring processes.
Innovation Solution
A compact burring apparatus with a doughnut shape cutter movable along the axial direction of the main spindle, allowing for immediate burr removal after welding, featuring a hydraulic cylinder for precise cutter movement and optimized cutter design to prevent misalignment and ensure smooth burr shearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a complex burring apparatus with rotatable cutter arms is used to surround the jointed work piece, then burring can be performed in the welding cycle, but the apparatus structure becomes very complex and the machine dimensions increase
Solution Approach 1:
The invention extracts the burring function from a complex multi-component apparatus and implements it with a single doughnut-shaped cutter. The cutter is positioned ahead of the main spindle and moves axially to perform burring, eliminating the need for rotatable cutter arms and auxiliary slide units, thus simplifying the overall apparatus structure while maintaining burring capability
Solution Approach 2:
The doughnut-shaped cutter serves multiple functions: it acts as both a positioning element during welding and a burring tool after welding. By integrating these functions into a single component, the invention reduces device complexity while maintaining productivity
2Ease of operation
If the annular cutter is formed after the jointed work piece is liberated and retracted by a predetermined length, then the cutter arms can be rotated to form the annular cutter, but it takes additional time and the burr cools and hardens making it difficult to remove
Solution Approach 1:
The doughnut-shaped cutter is pre-positioned ahead of the main spindle before welding begins. After welding, the cutter simply moves axially forward to engage the burr, eliminating the time-consuming process of rotating cutter arms and allowing burring to occur while the burr is still hot and soft for easier removal
3Productivity
If the slide unit is made slidable in the axial direction to retract the slide and form the annular cutter, then burring can be performed, but the apparatus structure becomes more complex
Solution Approach 1:
The invention eliminates the auxiliary slide unit and its complex sliding mechanisms by using a simpler axially movable doughnut-shaped cutter positioned ahead of the main spindle. The cutter moves directly along the axial direction to perform burring, removing unnecessary structural complexity while maintaining automatic burring functionality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables immediate and neat burr removal post-welding, reducing overall cycle time, improving welding precision, and maintaining a compact machine structure without increasing dimensions.
Implementation Method 1
A compact burring apparatus with a doughnut shape cutter movable along the axial direction of the main spindle, featuring a hydraulic cylinder for precise cutter movement
Implementation Method 2
a friction welding machine for friction welding a first and a second rod shape work piece by forcing one end of the second work onto one end of the first work in rotation
Data Source
Figure 1
Figure 2
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AI summary
OBJECT To provide a burring apparatus for a friction welding machine, capable of removing a burr created in friction welding immediately after the welding. MEANS FOR ACHIEVING THE OBJECT An inventive burring apparatus for a friction welding machine comprises: a clamp unit (25), provided at the front end of a horizontal main spindle (22), for holding the work piece W1 coaxial with the main spindle (22); a clamp unit (34) provided at the front end of a slide (30) that is movable to and away from the main spindle (22) in the direction of the axis L of the main spindle (22), the clamp unit (34) adapted to gripping the work (W2) coaxial with the slide (30); and a doughnut-shaped cutter (50) for shearing off a burr. The work piece W2 is moved forward together with the slide (30) through the doughnut-shaped cutter (50) ahead of the main spindle (22) until the work piece W2 comes into contact with the work piece W1 in rotation with the main spindle 22 so that the mated ends of the work pieces W1 and W2 are friction welded together on one side of the doughnut-shaped cutter (50) proximate to the main spindle (22), thereby forming a jointed work piece W. After the work pieces W1 and W2 are friction welded, the cutter 50 is moved over to the main spindle 22 Meanwhile, the burr w formed on the periphery of the jointed work is sheared off by the cutter. The jointed work piece W gripped by the main spindle (22) is then liberated from the main spindle 22, and the slide (30) is retracted to its home position. The chopped burr comes off the work piece W when the jointed work piece W is removed through the cutter 50.