Centrifugal Pendulum Carrier Disk Balancing Bore Design
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Solution Overview
Problem
The existing centrifugal pendulum devices for motor vehicle drive trains require balancing bores to be drilled after assembly, which can introduce chips that negatively affect the device's function and require additional machining steps.
Innovation Solution
A centrifugal pendulum device with pre-manufactured bores on the carrier disk for receiving balancing masses, such as solid rivets, which can be easily inserted during production, eliminating the need for post-assembly drilling and minimizing the risk of foreign particles entering the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If balancing holes are drilled into the carrier disc after assembly, then the centrifugal pendulum device can be balanced to eliminate imbalance, but chips produced during drilling can enter the device and impair its function
Solution Approach 1:
The balancing holes are pre-formed in the carrier disc during manufacturing, before the pendulum masses are installed. This preliminary action allows balancing masses to be inserted without requiring post-assembly drilling, thereby preventing chip contamination while achieving the necessary balancing precision.
2Manufacturing precision
If balancing holes are drilled after assembly, then imbalance can be eliminated, but additional machining steps are required
Solution Approach 1:
The balancing holes are created during the initial manufacturing of the carrier disc, integrating the balancing feature into the base component design. This eliminates the need for separate post-assembly drilling operations, reducing the number of machining steps while maintaining balancing precision.
3Adaptability or versatility
If balancing holes are drilled after assembly, then the balancing process can be adjusted based on test run results, but the process becomes more time-consuming
Solution Approach 1:
The balancing holes are pre-formed during carrier disc manufacturing, allowing balancing masses to be quickly inserted and adjusted based on test run results. This eliminates the time-consuming post-assembly drilling step while preserving the ability to adjust balancing based on measured imbalance.
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 solution allows for effective balancing without additional machining, reduces the risk of chip contamination, and simplifies the balancing process by enabling precise placement of balancing masses to counteract imbalances, thereby enhancing the device's performance and reliability.
Implementation Method 1
These masses oscillate along predetermined paths in the field of centrifugal acceleration when excited by variations in rotational speed
Implementation Method 2
These oscillations extract and replenish energy from the excitation vibration at appropriate times, thus damping the excitation vibration; the pendulum masses therefore act as vibration dampers
Implementation Method 3
the centrifugal pendulum device is balanced by means of balancing holes. For this purpose, holes are drilled into the carrier disc to eliminate any imbalance
Data Source
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AI summary
The invention relates to a centrifugal pendulum device for arranging in the drive train of a motor vehicle, comprising at least one pendulum mass, which is arranged on a carrier disk and can perform a relative motion in relation to the carrier disk along a specified pendulum path in order to assume a variable distance from the axis of rotation of the carrier disk, wherein the carrier disk comprises at least one bore for accommodating at least one balancing mass.