Reciprocating Saw Drive Assembly for Stable Low-Vibration Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional saw tools experience deflection and vibration during the reciprocating motion of the output shaft due to incomplete conversion of rotating force into reciprocating force, making it difficult to cut materials smoothly.
Innovation Solution
A saw tool design featuring a rotatable member connected to a power source with a driven assembly that is reciprocatably movable, including a first end portion connected to a driving tool and a second end portion slidably received within an insertion hole, which stabilizes the operation and reduces shaking by allowing smooth reciprocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotational member and output shaft are allowed to move relatively to convert rotating force into reciprocating force, then the cutter can be driven to reciprocate, but incomplete conversion causes deflection and vibration of the cutter
Solution Approach 1:
The patent applies dynamics by making the connection between the rotational member and driven assembly movable rather than fixed. The driven assembly includes a movable connection that allows relative motion between the rotational member and output shaft, enabling dynamic conversion of rotating force into reciprocating force while maintaining stability through controlled movement.
2Ease of operation
If a conventional motor-driven mechanism is used to convert rotating force into reciprocating force, then the cutter can be driven, but the structure becomes complex and manufacturing becomes difficult
Solution Approach 1:
The patent segments the driven assembly into distinct components: a driven assembly body, a movable connection, and a cutter. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining the force conversion capability. The movable connection is separated as a distinct element that enables the rotation-to-reciprocation conversion without requiring a complex mechanism.
3Device complexity
If the driven assembly is rigidly connected to the rotational member, then the structure is simple, but the rotating force cannot be completely converted into reciprocating force
Solution Approach 1:
The patent resolves this contradiction by introducing a movable connection that allows the driven assembly to move relative to the rotational member. This dynamic connection enables complete conversion of rotating force into reciprocating force by allowing the necessary relative motion, while the overall structure remains relatively simple. The movable connection is designed to be straightforward in construction while achieving the desired force conversion efficiency.
Data Source
AI summary
A saw tool is provided, including: a rotatable member, a first end portion of the rotatable member being configured to be connected with a power source, a second end portion of the rotatable member including an insertion hole; and a driven assembly, driven by the rotatable member to be reciprocatably movable relative to the rotatable member; wherein the driven assembly includes a first end portion and a second end portion opposite to the first end portion, the first end portion being configured to be connected with a driving tool, the second end portion being slidably received within the insertion hole.