Clamping Lever Segmentation for One-Sided Printing Press Assembly
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Solution Overview
Problem
Existing clamping lever designs for printing press tools require complex assembly and multiple screw connections, making it difficult to install, replace, or add levers without removing the spindle, especially since they often need to be threaded onto the spindle in advance.
Innovation Solution
A two-piece clamping lever design with a base body and a clamping lug that form-fits onto a recess, allowing for one-sided mounting and secure fixation without screws on the inaccessible side, using a single screw connection for easy assembly and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a two-piece clamping lever design with form-fitting connection is used, then ease of assembly and replacement is improved, but device complexity increases due to additional components
Solution Approach 1:
The clamping lever is divided into two separate components: a base body and a clamping lug. This segmentation allows the clamping lug to be independently attached to the base body via a form-fitting connection, enabling the lever to be assembled onto the spindle in a single operation from one side, thereby improving ease of assembly despite the increased number of parts.
2Reliability
If multiple screw connections are required for secure clamping, then reliability of clamping is improved, but ease of operation deteriorates due to complex assembly requirements
Solution Approach 1:
By segmenting the clamping lever into a base body and a clamping lug with form-fitting connection, the design achieves reliable clamping through the integrated structure while requiring only a single screw connection for attachment to the spindle, thus maintaining reliability without compromising ease of assembly.
Solution Approach 2:
The form-fitting connection between the clamping lug and base body acts as an intermediary mechanism that provides secure mechanical attachment without requiring multiple screw connections. This intermediate structural feature ensures reliable clamping while simplifying the assembly process to a single screw operation.
3Reliability
If levers must be threaded onto the spindle in advance, then reliability of connection is improved, but productivity deteriorates due to time-consuming assembly processes
Solution Approach 1:
The segmented design with form-fitting connection allows the entire clamping lever assembly to be attached to the spindle in a single operation from one side, eliminating the need for pre-threading operations. This significantly improves assembly speed and productivity while maintaining connection reliability through the integrated form-fitting structure.
Solution Approach 2:
The form-fitting connection between the clamping lug and base body is prepared in advance during manufacturing, allowing the field assembly to be simplified to a single screw operation. This preliminary structuring of the connection mechanism enables rapid installation without compromising connection reliability.
4Reliability
If screws are located on both sides of the spindle, then reliability of fixation is improved, but ease of operation worsens due to requirement of access from both sides
Solution Approach 1:
The segmentation into base body and clamping lug with form-fitting connection concentrates all fastening requirements to a single location on one side of the spindle. The form-fitting connection internally secures the clamping lug to the base body, while only one screw is needed for spindle attachment, eliminating the need for access from both sides and improving ease of operation while maintaining fixation reliability.
Data Source
Figure 1~2
Figure 3~4
AI summary
A clamping lever (1) for attaching machining tools (12) to a rotatably mounted element (14) of a printing press, comprising a base body (2), wherein the base body (2) has, on the one hand, a receiving device for a machining tool (12) and, on the other hand, is designed to partially encompass the rotatably mounted element (14), and a clamping tab (4), wherein the clamping tab (4) has a fastening device for attaching the clamping tab (4) to the base body (2) such that the clamping lever (1) is fixed to the rotatably mounted element (14), is intended to be mountable in a particularly simple manner and with very few means. For this purpose, the base body (2) further comprises a recess (10) and the clamping tab (4) a projection in the form of a lug, wherein the lug is positively engaged in the recess (10) in the fixed position of the clamping lever (1) on the rotatably mounted element (14).