Tilting Machining Body Support to Reduce Rattling and Clearance
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Solution Overview
Problem
Existing portable machining apparatuses face issues with rigidity and rattling due to the use of resin angular plates, which are easily slidable but lack sufficient stability, and metal angular plates with clearance, leading to reduced operability during tilting and machining.
Innovation Solution
The apparatus incorporates die-cast metal angular plates with protrusions and compression springs to reduce radial clearances and enhance sliding stability, allowing for precise tilting and machining by engaging ridged and recessed rails with elastic buffers to absorb frictional forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a resin angular plate is used, then sliding ease is improved, but rigidity deteriorates
Solution Approach 1:
The invention uses a resin angular plate combined with a metal plate to create a composite structure. The resin provides sliding ease while the metal plate adds rigidity, resolving the contradiction between ease of operation and strength.
2Strength
If a metal angular plate is used, then rigidity is improved, but rattling occurs due to clearance
Solution Approach 1:
The invention introduces a protrusion as an intermediary element between the metal plate and body support. This protrusion fills the clearance gap, preventing rattling while maintaining the rigidity benefits of the metal plate.
3Ease of operation
If clearance is placed between metal plate and body support, then sliding is allowed, but operability deteriorates
Solution Approach 1:
The invention applies local quality by providing engagement protrusions at specific critical locations where stability is needed, while maintaining clearance in other areas to allow sliding. This resolves the contradiction between sliding capability and operational stability.
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
This design improves the rigidity and stability of the tilting mechanism, reducing rattling and enhancing operability by maintaining smooth sliding and precise control during machining operations.
Implementation Method 1
a spring configured to urge the protrusion toward the guide
Implementation Method 2
a body support located between the body and the base, the body support including a guide engageable with the protrusion to allow sliding of the protrusion on the guide
Data Source
AI summary
A portable machining apparatus has high operability in tilting a body with respect to a base or in machining a workpiece with the tilting body. A portable machining apparatus placeable on a long gauge placed on an upper surface of a workpiece includes a base placeable on the long gauge, a body including a blade for machining the workpiece, an angular plate fixed to the base to support the body in a tiltable manner and including a protrusion, a body support located between the body and the base and including a guide engageable with the protrusion to allow sliding of the protrusion on the guide, and a spring that urges the protrusion toward the guide.