Vibration Damping in Single-Drive Processing Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Processing machines with a single drive system suffer from reduced positioning accuracy, axis dynamics, and mechanical vibration issues due to lower rigidity and indirect position detection, leading to suboptimal machining results.
Innovation Solution
Incorporating an acceleration sensor to determine the natural frequency and amplitude of vibrations, allowing for targeted control and damping of the drive movement, with sensors placed on both the guide element and processing unit to enhance movement regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single drive system is used instead of dual drive systems, then cost is reduced, but positioning accuracy and axis dynamics deteriorate
Solution Approach 1:
The patent implements feedback control by using an acceleration sensor to detect vibrations and feeding this information back to the control unit, which then adjusts the drive parameters to compensate for positioning errors and maintain accuracy despite using a single drive system
Solution Approach 2:
The patent utilizes mechanical vibration analysis by detecting natural frequencies and amplitudes with an acceleration sensor, then applying vibrational compensation through the control unit to maintain positioning accuracy in the single drive system
2Device complexity
If a single drive system is used instead of dual drive systems, then device complexity is reduced, but axis dynamics deteriorate
Solution Approach 1:
The patent detects natural frequencies and vibrational amplitudes using an acceleration sensor, then applies vibrational compensation through the control unit to maintain axis dynamics performance despite the reduced mechanical rigidity of a single drive system
Solution Approach 2:
The patent dynamically changes drive parameters based on detected vibration characteristics, adjusting acceleration profiles and speed parameters in real-time to optimize axis dynamics for the single drive configuration
3Device complexity
If indirect position detection is used, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent uses feedback from the acceleration sensor to compensate for the limitations of indirect position detection, detecting vibrations that occur during transmission and using this information to correct position measurements and improve detection precision
4Ease of manufacture
If a single drive system is used, then rigidity is reduced, but cost is reduced
Solution Approach 1:
The patent detects natural frequencies and vibrational amplitudes caused by reduced rigidity using an acceleration sensor, then applies vibrational compensation through the control unit to maintain effective system performance despite the lower mechanical rigidity of a single drive system
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 approach actively damps critical natural frequencies, improving the machining accuracy and dynamics by effectively managing vibration energy, thereby enhancing the overall performance of single-drive processing machines.
Implementation Method 1
an acceleration sensor (10) arranged on the guide element (2), wherein the control device (30) is designed to reduce the drive variable of the drive (4) in dependence on the amplitude determined by the acceleration sensor (10)
Implementation Method 2
The frequency and amplitude, in particular of the first natural frequency, can be determined with the acceleration sensor. The described structure of the machine tool according to the invention makes it possible, in particular, to determine the amplitude of the first natural frequency and to influence the drive variable of the drive on the basis of this result. The actual drive movement is overlaid with the present amplitude and dampened in this way.
Data Source
Figure 1
Figure 2
AI summary
The processing machine has a base portion (1) along which the movable guide elements (2,3) are attached to the processing unit (9). The guide element (2) is provided with a drive that is coupled to a bearing of other guide elements on the base portion, and is driven relative to the base portion. A sensor is mounted on the guide elements. A control device controls the drive size of the drive based on the detection result of the sensor. The processing unit is partially mounted between the sensor and the drive on the guide element. An independent claim is included for method for providing controlled drive for processing machine.