3D Track Groove Cam Assembly for Adjustable Reformer Die Paths
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Solution Overview
Problem
The existing base reformer assemblies in necker machines have limited adjustability, leading to frequent maintenance and replacement of drive elements due to wear, and lack of desirable components like sealed thrust bearings due to space constraints, resulting in inefficiencies and potential contamination of lubricants.
Innovation Solution
A cam arrangement with contoured cam channels and adjustable roller assemblies allows for precise adjustment of the roller die's path without swapping the cam plate, enabling operation at full capacity, and includes a cam follower with upper and lower roller members that can engage cam channels at different depths, facilitating adjustments while the machine is running.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base reformer assembly uses a fixed cam plate with limited adjustability, then the device complexity is reduced, but the reliability deteriorates due to frequent wear and replacement of drive elements
Solution Approach 1:
The cam follower assembly is made adjustable along the cam channel, allowing dynamic repositioning of the roller die path. This enables the system to adapt to wear conditions and maintain reliable operation without requiring a completely new cam plate, thereby improving durability while managing complexity through controlled adjustability.
Solution Approach 2:
The position of the cam follower along the cam channel can be changed to adjust the roller die's path and engagement parameters. This parameter adjustment allows the drive elements to operate at optimal positions, extending their service life and reducing frequent replacements, thus improving reliability without excessive complexity.
2Adaptability or versatility
If the cam plate design includes multiple adjustment positions, then the adaptability is improved, but the device complexity increases due to additional adjustment mechanisms
Solution Approach 1:
The cam channel is segmented into multiple zones or positions that correspond to different roller die paths. The cam follower can be positioned at discrete locations along this segmented channel, providing adaptability without requiring a completely complex reconfiguration mechanism. This segmentation approach balances versatility with manageable complexity.
Solution Approach 2:
Instead of adding complexity in the planar cam plate design, the adjustment is achieved by moving the cam follower along the length of the cam channel (adding a dimensional aspect). This allows multiple adjustment positions to be accessed along the cam channel without significantly increasing the overall mechanical complexity of the cam mechanism itself.
3Reliability
If the forming assembly operates in limited space, then the productivity is maintained, but the reliability worsens due to inability to include robust drive elements
Solution Approach 1:
The adjustable cam follower assembly is nested within the existing cam plate structure, allowing robust drive elements to be incorporated without significantly increasing the external dimensions of the forming assembly. This nested configuration enables reliable, wear-resistant components to fit within the limited space while maintaining high processing speeds and productivity.
4Productivity
If the machine requires downtime for adjustments, then the device complexity is reduced, but the productivity deteriorates due to operational interruptions
Solution Approach 1:
The cam follower position can be pre-adjusted to optimal settings before operation begins. This preliminary adjustment allows the machine to run continuously at peak efficiency without requiring interruptions for mid-operation tweaks. The ability to set the correct path beforehand prevents downtime while maintaining manageable device complexity.
Solution Approach 2:
The adjustable cam follower mechanism is designed to allow quick position changes during operation if needed. This dynamic adjustability enables operators to make minor corrections without shutting down the entire machine, thereby maintaining productivity while using a relatively simple adjustment mechanism rather than a complex continuous control system.
Data Source
AI summary
A cam arrangement includes a cam plate and a cam follower. The cam plate having a body with a planar face and a number of cam channels defined in the body, each cam channel extending into the body from the planar face and defined, in-part, by a pair of opposing sidewalls. The cam follower includes a roller assembly having an upper roller member and a lower roller member. The upper roller member is engaged with a first sidewall of the pair of opposing sidewalls at a depth into the channel from the planar face, and the lower roller member is engaged with a second sidewall, opposite the first sidewall, of the pair of opposing sidewalls at the depth into the channel from the planar face.