Adjustable Chamfering Tool for Front and Back Hole Edges
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Solution Overview
Problem
Current machining techniques lack efficient tools to chamfer the back face of holes, particularly in double-lug structures where the distance between lugs is small, making it difficult to remove burrs and affecting machining rhythm and efficiency.
Innovation Solution
A hole chamfering device with bilateral symmetry blades and a blade distance adjusting assembly, allowing for adjustable blade positions to chamfer both the front and back faces of holes, utilizing a guide rail, sliding blocks, springs, and a V-shaped block to facilitate easy operation and efficient chamfering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing equipment is used for interpolation and milling during machining, then the front face of the hole can be chamfered, but the machining rhythm is affected and the efficiency is low
Solution Approach 1:
The chamfering tool is segmented into two independent cutting edges: a first cutting edge for chamfering the front face of the hole, and a second cutting edge for chamfering the back face of the hole. This segmentation allows both faces to be processed in one operation, eliminating the need for separate interpolation and milling steps, thereby improving machining efficiency and maintaining continuous machining rhythm.
2Adaptability or versatility
If a chamfering tool is fed from the front face of the hole, then the front face can be chamfered, but the back face of the hole cannot be chamfered due to lack of operation space
Solution Approach 1:
The chamfering tool is designed with cutting edges that extend through the hole, allowing the second cutting edge to act on the back face of the hole from the front face approach. This inversion of the conventional approach enables chamfering of the back face without requiring direct access from the back, solving the operation space limitation in double-lug structures.
Solution Approach 2:
The cutting edges are arranged in different spatial dimensions and orientations. The first cutting edge processes the front face while the second cutting edge, positioned at the opposite side of the tool, processes the back face of the hole. This dimensional arrangement allows dual-face chamfering from a single approach direction.
3Shape
If the distance between lugs is quite small in a double-lug structure, then the structure is compact, but burrs on the back face of the mounting hole are quite difficult to remove
Solution Approach 1:
Instead of approaching the hole from the back face to remove burrs, the tool approaches from the front face with cutting edges that extend through the hole to process the back face. This inverted approach allows burr removal in compact double-lug structures where back face access is impossible.
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 efficient chamfering of both the front and back faces of holes, improving machining efficiency and practical application value by allowing for precise adjustment and easy operation.
Implementation Method 1
a spring (20), the first sliding block (12) and the second sliding block (17) are connected with each other through the spring
Implementation Method 2
the V-shaped block (15) is positioned between the first sliding block (12) and the second sliding block (17), and two sides of the V-shaped block (15) are respectively matched with the first sliding block (12) and the second sliding block (17) in a wedge-shaped mode
Implementation Method 3
a V-shaped block (15), the first guide rail (11) and the second guide rail (16) are in bilateral symmetry, the first sliding block (12) is mounted on the first guide rail (11)
Implementation Method 4
a screw (6) and a nut plate (2), the lower end of the screw (6) is fixed on the sleeve (9); and a circle of annular slideway is arranged on the bottom face of the nut plate (2) around the threaded hole
Data Source
AI summary
The present disclosure belongs to the field of machining of chamfers of holes. The hole chamfering device includes blades in bilateral symmetry and a blade distance adjusting, through the blade distance adjusting, the distance between the blades on the left side and the right side can be adjusted, thus, after the blades on the left side and the right side of the hole chamfering device process chamfers on the front face of a hole, the distance between the blades is reduced to enable the blades to pass through the hole to process chamfers on the back face of the hole, after processing of the chamfers on the back face of the hole is completed, the distance between the blades is reduced, the hole chamfering device not only can chamfer the front face of the hole, but also can chamfer the back face of the hole.