Braking Device for Orbital Tool Automated Disc Changing
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Solution Overview
Problem
Orbital grinding machines face challenges in achieving a defined position for the mounting plate during automated disc changing, and the plate often continues to rotate after the motor is turned off, delaying the changing process.
Innovation Solution
A braking device is integrated into the orbital grinding machine, comprising a frame, a leaf spring, a lever, and an actuator. The actuator moves the lever, tensioning the spring and pressing it against the mounting plate to decelerate and position it accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the motor is turned off to stop the mounting plate, then energy consumption is reduced, but the mounting plate continues to rotate for a considerable period, causing delay in the automated changing process
Solution Approach 1:
The braking device is activated before the motor is turned off to counteract the residual rotation of the mounting plate. The actuator engages the brake pad against the braking surface, applying a braking force that opposes the rotational motion and brings the plate to a quick stop, preventing the delay that would otherwise occur after motor shutdown.
Solution Approach 2:
The braking action is initiated in advance as part of the automated changing sequence, before the motor is completely stopped. This preliminary braking action ensures that the mounting plate is already decelerating or stopped when the changing process begins, eliminating waiting time in the automation cycle.
2Strength
If the mounting plate is allowed to rotate freely after motor shutdown, then mechanical stress on braking components is reduced, but the plate comes to rest in an undefined position, preventing automated disc changing
Solution Approach 1:
The automated control system activates the braking device at the appropriate moment in the changing sequence, using feedback from the system's control logic to determine when braking should engage. This ensures the plate is stopped at a defined position (such as a home position or reference orientation) that enables proper alignment for disc changing.
Solution Approach 2:
The braking device is integrated into the automated changing system, where the system itself controls the braking action to achieve the desired position. The mounting plate's position is automatically controlled through the actuator-driven brake, eliminating the need for manual positioning while ensuring repeatable, defined positions for automated operations.
3Productivity
If a braking device is added to quickly stop the mounting plate, then the automated changing process becomes faster and more reliable, but the device complexity increases
Solution Approach 1:
The braking function is extracted as a separate, dedicated device with its own actuator, brake pad, and braking surface. This modular approach allows the braking system to be independently controlled and optimized without complicating the motor or mounting plate design, enabling quick stopping action that speeds up the automated changing process.
Solution Approach 2:
The actuator serves as an intermediary component that converts control signals into mechanical braking force. By using this intermediate element, the control system can precisely manage the braking action without direct mechanical coupling between the control system and the mounting plate, simplifying the overall control architecture while achieving fast, reliable stopping.
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 braking device effectively decelerates the mounting plate and positions it in a defined angle, enabling faster and more reliable automated disc changing by eliminating the delay caused by residual rotation.
Implementation Method 1
a spring (in particular, a leaf spring), which is fixated to the frame at a first end, as well as a lever which is connected to a second end of the spring. The braking device further comprises an actuator which is configured to move the lever, wherein, when the lever is moved, the spring is tensioned
Implementation Method 2
a part of the lever is pressed against the mounting plate of the machine tool
Data Source
AI summary
The invention relates to a device with a machine tool and a braking device, the machine tool having an eccentrically supported, rotatable backing pad for receiving a tool. According to one embodiment, the braking device has a frame, which is attached to the machine tool; a spring, a first end of which is fixed on the frame; and a lever, which is connected to a second end of the spring. The braking device also has an actuator, which is designed to move the lever, wherein in the event of a movement of the lever, the spring is compressed and a part of the lever is pressed against the backing pad of the machine tool.