Oscillating Tool Spindle With Integrated Superimposed Motion
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Solution Overview
Problem
Conventional oscillatingly driven machine tools require a separate and complex additional drive to superimpose movements, resulting in an expensive and intricate structure.
Innovation Solution
The tool spindle is designed to oscillate about its longitudinal axis with a superimposed movement generated by the eccentric element, using a coupling element and slotted guide system that allows for perpendicular movement without a separate drive, simplifying the design and enabling interchangeable slotted guides for varying movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate additional drive is provided to superimpose movements on the oscillating tool spindle, then the machine tool can perform complex cutting operations, but the structure becomes expensive and complex
Solution Approach 1:
The patent combines the oscillating drive and the movement superimposition function into a single integrated drive system. The eccentric element not only generates the oscillating movement but also simultaneously generates the superimposed movement through its interaction with the slotted guide, eliminating the need for separate actuators and reducing structural complexity
Solution Approach 2:
The eccentric element serves multiple functions: it generates the primary oscillating movement of the tool spindle and simultaneously generates the superimposed movement through its engagement with the slotted guide. This multi-functional design reduces the number of components needed while maintaining versatility
2Measurement precision
If multiple actuators are used to generate superimposed movements, then precise control is achieved, but the construction becomes expensive
Solution Approach 1:
The eccentric element automatically generates both the oscillating movement and the superimposed movement through its own rotational motion and geometric interaction with the slotted guide, without requiring external actuators. The system serves itself by utilizing the inherent properties of the eccentric mechanism to produce the required complex motion trajectory
3Adaptability or versatility
If a complex additional drive is provided for superimposed movements, then versatile cutting operations are enabled, but the structure becomes intricate
Solution Approach 1:
The movement generation is segmented into two independent components: the oscillating movement generated by the eccentric element's rotation and the superimposed movement generated by the interaction between the eccentric element and the slotted guide. This segmentation allows each component to be simple while their combination provides versatility
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 configuration simplifies the machine tool design, eliminates the need for additional actuators, and allows for efficient superimposed movements, particularly suitable for sawing applications with minimal feed force and secure sealing, while enabling adjustable speed control for improved work progress.
Implementation Method 1
a motor with a motor shaft is accommodated, on which an eccentric element is received... which cooperates with the eccentric element for generating a movement of the tool spindle oscillating about its longitudinal axis
Implementation Method 2
a coupling element is non-rotatably received, which cooperates with the eccentric element for generating a movement of the tool spindle oscillating about its longitudinal axis... allowing for perpendicular movement without a separate drive
Data Source
AI summary
An oscillatingly driven machine tool having a housing in which a motor with a motor shaft is received, on which an eccentric element is accommodated, with a spindle head, with a tool spindle that is rotatably mounted about its longitudinal axis in the spindle head, on which a coupling element is non-rotatably received, which cooperates with the eccentric element for generating a movement of the tool spindle which oscillates about its longitudinal axis such that, in addition to the oscillating movement, a differing, superimposed movement is introduced into the coupling element.