Flowing Drilling Apparatus Dynamic Parameter Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flow drilling apparatuses face a compromise between drilling speed and surface quality, as high rotational speed and feed force are needed for rapid material plasticization but result in lower surface quality, and vice versa.
Innovation Solution
A control device that adjusts the feed drive and rotary drive parameters in multiple operating modes, switching from high speed and force for plasticization to lower speed and force for shaping, allowing for better surface quality and adaptability to different materials and geometries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high rotational speed and high feed force are used, then material plasticization speed is improved, but surface quality of the passage deteriorates
Solution Approach 1:
The patent applies dynamics by making the operating parameters (rotational speed and feed force) variable during the drilling process. The control device automatically adjusts these parameters in two stages: first using high values for rapid plasticization, then switching to lower values for high-quality passage formation. This dynamic parameter adjustment resolves the contradiction between speed and quality.
Solution Approach 2:
The patent implements periodic action by dividing the drilling process into two distinct phases with different parameter sets. The control device switches between parameter sets at a defined switchover point (when the flow drill exits the workpiece), creating a periodic pattern of high-speed plasticization followed by low-speed finishing, thereby achieving both high productivity and high surface quality.
2Productivity
If high feed force is applied, then drilling speed is improved, but surface quality of the passage deteriorates
Solution Approach 1:
The patent applies dynamics by making the feed force variable during the drilling process. The control device automatically adjusts feed force in two stages: high feed force during plasticization to achieve rapid penetration, then low feed force during passage formation to ensure high surface quality. This dynamic adjustment resolves the contradiction between drilling speed and surface quality.
Solution Approach 2:
The patent implements periodic action by switching between two feed force regimes at the switchover point. The control device applies high feed force initially for fast drilling, then transitions to low feed force for precision passage formation, creating a periodic pattern that achieves both high productivity and high manufacturing precision.
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 faster drilling with improved surface quality of the passage, enhancing the quality of subsequent threads and accommodating various sheet metal materials and thicknesses through parameter adjustment and automatic detection.
Implementation Method 1
The workpiece is heated by the friction produced between the flow drill and the workpiece
Data Source
AI summary
A flowing drilling apparatus having a feed drive for producing a feed of a flow drill in an axial direction and having a rotary drive for producing a rotational movement of the flow drill. The flowing drilling apparatus includes a control device that is configured and adapted to control the feed drive and/or the rotary drive in accordance with a first set of parameters up to a defined switchover point and to control it/them in accordance with a second set of parameters differing from the first set of parameters, from the defined switchover point onward.