Rotatable Crankshaft Support for Dual-End Machining
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Solution Overview
Problem
Existing machines for machining crankshafts face limitations such as difficulty in loading and unloading from a single point, inability to machine both ends in case of a breakdown, and challenges in performing complex operations like keyway machining without additional modules or tool-head changes.
Innovation Solution
A machine with two identical machining modules and a rotatable support structure allowing 180-degree rotation, enabling both modules to work on both ends of multiple crankshafts simultaneously, and allowing for flexible tool positioning and operation without needing additional modules or tool changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two workstations are used with crankshafts arranged in reverse manner, then the cycle time is reduced and machinery exploitation is improved, but the device complexity increases and loading/unloading becomes more difficult
Solution Approach 1:
The support structure is made rotatable about a vertical axis, allowing it to dynamically change orientation between different working positions. This enables a single support structure to serve multiple functions that previously required separate workstations, reducing device complexity while maintaining high productivity
Solution Approach 2:
The single support structure is designed to accommodate crankshafts in multiple orientations and positions, enabling it to serve as both first and second workstation depending on its rotational position. This multi-functionality eliminates the need for separate dedicated workstations for different machining operations
2Productivity
If two workstations are used with reverse arrangement, then both machining modules can work simultaneously with minimum downtime, but the ease of operation for loading and unloading deteriorates
Solution Approach 1:
The rotatable support structure allows the loading/unloading station to be positioned at any orientation, enabling operators to load and unload crankshafts from a single fixed location regardless of which machining module is being serviced. This dynamic repositioning maintains operational simplicity while preserving high machining efficiency
Solution Approach 2:
The rotatable support structure acts as an intermediary between the two machining modules and the single loading/unloading station, enabling material transfer and positioning without requiring separate loading/unloading points for each module
3Adaptability or versatility
If additional machining modules are used to perform complex operations, then the versatility is improved, but the device complexity and cost increase
Solution Approach 1:
The rotatable support structure enables complex machining operations by allowing the crankshaft to be positioned at various orientations relative to the machining modules. Operations requiring specific working angles can be performed by rotating the support structure to the appropriate position rather than adding dedicated modules for each operation
Data Source
AI summary
The invention relates to a machine comprising a first machining module (1) configured to simultaneously machine at least two crankshafts, a second machining module (2) configured to simultaneously machine at least two crankshafts, and a support structure (3) with at least four crankshaft fixing positions (31, 32, 33, 34) for the machining of such crankshafts. The support structure (3) is located between the machining modules. The fixing positions (31, 32, 33, 34) are arranged in two columns (35, 36) of fixing positions, each of which comprises at least two of the fixing positions (31, 32; 33, 34) located at a different height, and the support structure (3) is rotatably arranged, such that it can perform a rotation of at least 180 degrees.