Vertical Cam Shaft Work Transfer Device for Multi-Process Press
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Solution Overview
Problem
Existing work transfer devices in multi-process press machines are complex and large due to the need for three-dimensional movement, often requiring multiple servo motors and position detection systems, which complicates the structure and increases size.
Innovation Solution
A work transfer device with a vertically mounted cam shaft driven by a single motor, utilizing three cams and a link mechanism with swing levers and rods to achieve three-dimensional movement of the feed bar, allowing for compact design and efficient transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple servo motors and position detection systems are used to achieve three-dimensional movement, then transfer precision and smoothness are improved, but device complexity and size increase
Solution Approach 1:
The patent combines three separate cam mechanisms (X-axis feed cam, Y-axis feed cam, and Z-axis feed cam) onto a single vertical cam shaft, eliminating the need for multiple independent servo motors and position detection systems. This merging approach maintains three-dimensional movement capability while significantly reducing device complexity and size.
Solution Approach 2:
The patent replaces complex servo motor-driven mechanical systems with a cam-based mechanical system. The cam profiles are designed to directly generate the required three-dimensional movement trajectories, substituting electronic control and position detection with purely mechanical motion generation, thereby reducing device complexity while maintaining precision.
2Stability of the object's composition
If multiple servo motors and position detection systems are used to achieve three-dimensional movement, then transfer smoothness is improved, but device size increases
Solution Approach 1:
The patent merges three cam mechanisms onto a single vertical cam shaft, consolidating what would traditionally require multiple separate motor assemblies and control systems into one compact unit. This significantly reduces the overall device size while the cam profiles ensure smooth three-dimensional transfer motion.
Solution Approach 2:
The patent uses a vertical cam shaft arrangement where cams are stacked in the vertical dimension rather than spreading mechanisms out in horizontal space. This dimensional reorganization allows three-dimensional workpiece transfer to be achieved within a more compact footprint, reducing device size while maintaining transfer smoothness.
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 device enables efficient and smooth three-dimensional movement of the workpiece, reducing complexity and size while maintaining high transfer precision, thus accommodating limited spaces effectively.
Implementation Method 1
a cam mechanism operated on the horizontal plane by rotation of the cam shaft, which is formed of three cams including an X-axis feed cam that serves to move a feed bar provided with a work holding fitting for holding the work toward its longitudinal direction as an X-axis direction
Implementation Method 2
three types of swing levers each having a cam follower engaged with each of the cams that constitute the cam mechanism in an intermediate portion of the respective swing levers so as to be swingably operated at predetermined support points
Data Source
AI summary
A work transfer device employed in a multi-process press machine is provided with a drive unit formed of a servo motor, a cam shaft vertically provided so as to be rotatably driven by the drive unit, a cam mechanism formed of three cams including an X-axis feed cam that moves a feed bar provided with a work holding fitting for holding a work toward an X-axis direction, a Y-axis feed cam that moves the feed bar in parallel toward a Y-axis direction in parallel, and a Z-axis feed cam that moves the feed bar in parallel toward a Z-axis direction, a group of swing levers formed of three types of swing levers which are swingably operated in engagement with the corresponding cams that constitute the cam mechanism, and a link mechanism connected to each end portion of the swing levers such that the feed bar is linearly driven toward the X-axis, Y-axis, and Z-axis directions.