Drilling Head Axial Oscillation Generator for Chip Breaking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drilling machines face challenges in breaking up long chips during drilling operations, which can impair hole quality, and require adaptive axial oscillations to suit different materials, but existing devices are not robust enough, sensitive to load, and lack flexibility for universal use.
Innovation Solution
A drilling head with a controlled generator of axial oscillations, featuring a piezoelectric actuator, elastically deformable suspension, and adjustable preload, capable of transmitting torsion moments and guiding the tool holder, allowing for variable amplitude and frequency oscillations, and equipped with a sensor to detect material changes for real-time parameter adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If axial oscillations are applied to break up chips, then chip breaking improves, but device robustness deteriorates
Solution Approach 1:
The device separates the oscillation generation function from the drilling function by using a piezoelectric actuator that can be independently controlled, allowing chip breaking oscillations to be applied without compromising the robustness of the main drilling system
Solution Approach 2:
The system dynamically adjusts oscillation parameters (amplitude, frequency) based on detected material conditions, enabling effective chip breaking while maintaining device robustness through adaptive control rather than continuous high-amplitude oscillations
2Adaptability or versatility
If adaptive oscillations are used for different materials, then drilling quality improves, but device complexity increases
Solution Approach 1:
A sensor detects material conditions during drilling and provides feedback to the control system, which automatically adjusts oscillation parameters accordingly, enabling material adaptation without requiring complex manual intervention or overly sophisticated control mechanisms
Solution Approach 2:
The drilling device incorporates a universal control system that can handle multiple material types through a single adaptive control mechanism, avoiding the need for separate specialized systems for each material type
3Object-generated harmful factors
If high amplitude oscillations are applied, then chip breaking effectiveness improves, but sensitivity to load increases
Solution Approach 1:
The system dynamically adjusts oscillation amplitude based on real-time load detection, applying high amplitude oscillations only when needed for effective chip breaking while reducing amplitude under varying load conditions to maintain stability and reduce sensitivity
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
The solution effectively breaks up chips and adapts to various materials, providing robust and flexible axial oscillations that are not sensitive to load, enabling improved drilling quality and efficiency by adjusting parameters based on material detection.
Implementation Method 1
a controlled generator of reciprocating movements (oscillations) in the direction of the abovementioned axis, interposed between the mount and the tool holder... featuring a piezoelectric actuator
Implementation Method 2
elastically deformable suspension means for suspending the tool holder from the mount which are capable of transmitting torsion moments
Data Source
AI summary
A drilling head (1) with an axial oscillation generator, includes a mounting (2) for coupling the head to a motor for rotating the mounting about an axis, the mounting (2) having a longitudinal axis (5) coinciding with the axis of rotation of the motor, a tool holder (3), an elastically deformable element (6) for retaining the tool holder (3) in the mounting (2) and an element (7) for guiding the tool holder (3) in the mounting (2) along the longitudinal axis (5) of the mounting, wherein the mounting of the drilling head includes a controlled generator (8) of reciprocating movements in the direction of the aforementioned axis (5) positioned between the mounting (2) and the tool holder, the tool holder and the generator being connected by a longitudinal coupling member (9) suitable for damping the impacts withstood by the tool holder while enabling the transmission of the reciprocating movements.