Adjustable Chamfering Tool for Front-Fed Backside Hole Machining
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Solution Overview
Problem
In the manufacturing of automobile parts, particularly for double-lug holes with specific structures, there is no operational space to directly feed a tool from the back face of holes for chamfering, leading to reduced production efficiency and the need for manual burr removal, which is inefficient.
Innovation Solution
A hole chamfering device with bilateral symmetry blades and a blade posture adjusting assembly that allows the blades to be adjusted into three postures, enabling chamfering from the front face and removing burrs, including a mechanism with a nut plate, screw, rotating shaft, and gears to facilitate access to both the front and back faces of holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tool is fed from the back face of the hole for chamfering, then the chamfering work can be completed, but the production takt is increased and production efficiency is reduced due to lack of operational space
Solution Approach 1:
Instead of feeding the tool from the back face of the hole (conventional approach), the invention feeds the tool from the front face of the hole. The blade is designed with a specific geometry that allows it to chamfer both the front face and back face of the hole by rotating around the hole's axis, thereby inverting the conventional tool feeding direction and improving productivity
Solution Approach 2:
The blade is designed to rotate around the hole's axis, adding a rotational dimension to the chamfering process. This allows the blade to access both the front and back faces of the hole through rotation, rather than requiring direct linear access from the back face, thus solving the operational space constraint
2Ease of operation
If manual removal of burrs is used, then the operational space constraint is avoided, but the production efficiency is reduced
Solution Approach 1:
The blade is designed with multi-functionality to perform both chamfering and burr removal operations. By designing the blade with specific cutting edge geometries that can chamfer at different angles and remove burrs, the invention eliminates the need for separate manual operations, thereby improving production efficiency while maintaining operational feasibility
Solution Approach 2:
The invention merges the chamfering operation and burr removal operation into a single blade and single tool feeding action. The blade is designed to perform both functions during one pass through the hole, combining multiple operations that would traditionally require separate steps, thus improving productivity
3Device complexity
If a single posture blade is used, then the device structure is simple, but it cannot complete chamfering work on both front and back faces of the hole
Solution Approach 1:
The blade is designed with dynamic adjustability, allowing it to change its posture (cutting angle) during operation. The blade can be adjusted to different angles to chamfer both the front and back faces of the hole, transforming a static single-posture blade into a dynamic multi-posture blade that adapts to different machining requirements while maintaining relative structural simplicity
Data Source
AI summary
The present disclosure belongs to the technical field of hole machining equipment, and provides a hole chamfering device including blades in bilateral symmetry and a blade posture adjusting assembly. The hole chamfering device not only can be fed from the front face of a hole to complete chamfering work on the front face of the hole, but also can solve the problem of chamfering the back face of the hole under the condition that a chamfering tool cannot be directly fed from the back face of the hole. The hole chamfering device can be fed from the front face of the hole to complete chamfering work on the front face and the back face of the hole, and meanwhile, can remove burrs in the hole, thereby meeting the machining requirement of conventional chamfering of the hole.