Cam Mechanism Transfer Rollers Transverse Force Reduction
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Solution Overview
Problem
Conventional cam mechanisms experience reduced service life and are unable to transmit high forces due to lateral forces between the cam disc and take-off roller, limiting production speed and force transmission capabilities.
Innovation Solution
A cam mechanism with at least two rotatably mounted take-off rollers on a pivotally mounted pendulum lever, which reduces transverse forces to zero by breaking them down into opposing components, allowing for the transmission of high forces up to 1000 kN and increasing service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single take-off roller is used in the cam mechanism, then the structure is simple, but transverse forces are high and service life is reduced
Solution Approach 1:
The single take-off roller is segmented into two take-off rollers (12', 12'') that are rotatably mounted on a pendulum lever (24). This segmentation allows the transverse forces to be distributed and broken down into opposing components, reducing the net transverse force to zero while extending service life.
2Device complexity
If a single take-off roller is used, then the device is simple, but the force transmission capability is limited
Solution Approach 1:
The force transmission is segmented through two take-off rollers on a pendulum lever, allowing the cam disc (6) to transmit high forces up to 1000 kN by breaking them down into components that act on each roller, thereby increasing overall force transmission capability.
Solution Approach 2:
The pendulum lever (24) acts as a counterbalancing mechanism that offsets transverse forces through its pivotal movement, enabling the system to handle high forces while maintaining structural integrity and reducing lateral loads on individual components.
3Productivity
If conventional cam mechanism is used, then production speed is limited, but the mechanism is reliable
Solution Approach 1:
The segmented take-off roller system with two rollers on a pendulum lever reduces wear and transverse forces, allowing the cam mechanism to operate at higher speeds with extended service life, thereby increasing productivity without sacrificing reliability.
4Device complexity
If high forces are transmitted through a single take-off roller, then the cam mechanism is compact, but wear increases and service life decreases
Solution Approach 1:
The load is segmented across two take-off rollers instead of one, distributing the wear and reducing the stress on each individual roller. This segmentation allows high forces to be transmitted while extending the service life of the cam mechanism components.
Solution Approach 2:
The pendulum lever introduces a new parameter - the angle of inclination - which changes dynamically to optimize the force distribution between the two take-off rollers, reducing wear and extending service life under high force conditions.
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 solution significantly extends the service life of the cam mechanism and linear carriage, enabling high production speeds and efficient force transmission, with reduced wear and maintenance, and supports complex cam disk contours.
Implementation Method 1
The cam disc (6) and the linear slide (8) touch each other in the cam joint, the so-called contact point... with the rotation of the cam disk... the touching take-off rollers vary the respective touching points or lines of the peripheral surface
Implementation Method 2
the linear slide (8) has a pivotably mounted pendulum lever (24), the pendulum lever (24) having at least two take-off rollers (12 ', 12'') which are rotatably mounted in such a way that the cam disk (6) can be rolled on the at least two take-off rollers (12 ', 12'') resting against the cam disk (6) in order to transmit the drive force introduced to the linear slide (8)
Data Source
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AI summary
The present invention relates to a cam mechanism (1) having a cam element (2) and an engaging element (4), wherein the engaging element (4) comprises a rotatably mounted transfer roller (12) for transmitting to the engaging element (4) a drive force (10) which is discharged into the cam element (2). The engaging element (4) has at least two rotatably mounted transfer rollers (12'; 12''). The present invention proposes a production method for said cam mechanism, provides a program for carrying out at least some of the steps of the production method, and proposes a punching-bending machine equipped with such a cam mechanism.