Workpiece Support Clamping Feedback for High-Speed Machining
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Solution Overview
Problem
Existing machining systems face challenges in ensuring operational reliability during high-speed turning operations due to limitations in workpiece clamping and stress monitoring, particularly with contactless energy transmission interfaces that can lead to reliability issues and interference problems.
Innovation Solution
A system that combines a contactless information transmission interface with a hydraulic and/or pneumatic energy transmission interface for workpiece support, allowing for bidirectional energy and information exchange, which enhances monitoring and energy supply reliability, and includes a clamping device with self-locking actuating devices for secure workpiece fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contactless inductive or capacitive transmission interface is used for energy and information transmission between rotary milling table and workpiece support, then wear is reduced and reliability is improved, but the possibilities for sensors and actuators on the workpiece support are limited which may negatively affect operational safety
Solution Approach 1:
The patent divides the transmission system into two separate interfaces: a contactless inductive or capacitive interface for information transmission, and a hydraulic or pneumatic energy transmission interface for power supply. This segmentation allows each interface to be optimized for its specific function, enabling full sensor capabilities on the workpiece support while maintaining reliable energy transmission through the rotary table.
2Productivity
If high rotational speeds are used for turning operations, then productivity is improved, but safety requirements increase and monitoring of workpiece clamping becomes more difficult
Solution Approach 1:
The patent implements a monitoring device on the workpiece support that detects the state of stress of the clamping device and transmits this information via the contactless information transmission interface to the control device. This feedback mechanism enables continuous monitoring of workpiece clamping safety during high-speed turning operations, allowing the control system to respond to any changes in clamping conditions.
Solution Approach 2:
The patent replaces mechanical contact-based transmission with contactless inductive or capacitive transmission for information transfer, and hydraulic or pneumatic transmission for energy transfer. This substitution eliminates wear and interference issues associated with mechanical contacts, enabling reliable operation at high rotational speeds while maintaining accurate monitoring capabilities.
3Adaptability or versatility
If detachable connection between rotary milling table and workpiece support is used, then adaptability is improved, but reliable clamping and monitoring during rotation becomes more difficult
Solution Approach 1:
The patent introduces hydraulic or pneumatic energy transmission as an intermediary mechanism between the rotary milling table and workpiece support. This intermediary system provides continuous energy supply for clamping during rotation, ensuring reliable workpiece fixation even with detachable connections, while the contactless information transmission interface maintains monitoring capabilities throughout the rotational movement.
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 system provides increased operational reliability by reducing the risk of failure in stress monitoring and energy supply, allowing for secure workpiece attachment and monitoring during high-speed operations, while minimizing installation space and interference issues.
Implementation Method 1
EP 1 522 377 A1 shows a rotatable rotary milling table with a contactless inductive (or capacitive) transmission of electrical energy from the rotary milling table to a workpiece support attached thereto
Implementation Method 2
EP 1 522 377 A1 shows a rotatable rotary milling table with a contactless inductive (or capacitive) transmission of electrical energy
Implementation Method 3
the support device and the workpiece support fastened to the receiving device are further configured to be coupled to one another via an energy transmission interface for the transmission of hydraulic and/or pneumatic energy
Implementation Method 4
a clamping device which is used to fasten a workpiece to be machined to the workpiece support
Data Source
AI summary
A system for machining workpieces includes a machine tool including a support device including a receiving device for workpiece supports. The receiving device is configured to rotate about an axis of rotation with respect to a base of the machine tool. The system includes a workpiece support which can be fastened to the receiving device and has a clamping device, via which a workpiece is fastened. The workpiece support includes a monitoring device to monitor a state of stress of the clamping device. The support device and the workpiece support are electrically coupled via a contactless information transmission interface such that the monitoring device can transmit information about the state of stress monitored during the workpiece machining to the support device. The support device and the workpiece support are configured to be coupled to one another via an energy transmission interface for the transmission of hydraulic and/or pneumatic energy.