Tool Carrier Layout for Dual-Path Machining Flexibility
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Solution Overview
Problem
Existing manufacturing cells face challenges in achieving high output rates while maintaining flexibility, particularly in machining operations that require independent processing of workpieces.
Innovation Solution
The manufacturing cell design includes a machine tool with a tool carrier that can move in multiple directions relative to the machine bed and workpiece carriages, allowing for overlapping tool coverage across two parallel workpiece paths. This enables simultaneous machining of workpieces on both paths, with independent carriage movement ensuring flexibility and high output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two tool units are arranged on a gantry to machine two workpieces simultaneously, then productivity is improved, but device complexity increases
Solution Approach 1:
A single tool unit is designed to perform multiple functions by machining workpieces on both the first and second workpiece paths. The tool unit can be displaced to machine workpieces on either path sequentially, eliminating the need for separate tool units for each path and thereby reducing device complexity while maintaining high productivity
Solution Approach 2:
The tool unit is made dynamically positionable between the two workpiece paths through a displacement mechanism along the longitudinal direction. This dynamic repositioning capability allows the single tool unit to service both paths efficiently, achieving simultaneous machining capability without requiring static dual tool unit configuration
2Device complexity
If a single tool unit services both workpiece paths, then device complexity is reduced, but machining time increases
Solution Approach 1:
Workpieces are prepared and positioned on both workpiece paths in advance before machining begins. The workpiece supply system ensures that workpieces are ready on both paths simultaneously, allowing the single tool unit to switch between paths without waiting for workpiece preparation, thereby minimizing idle time
Solution Approach 2:
The system maintains continuous machining operation by having the tool unit alternate between machining workpieces on the first and second paths without idle transitions. The independent displacement of workpiece carriages ensures that workpieces are always ready for machining, eliminating waiting time and maintaining continuous productive action
3Device complexity
If workpiece carriages are coupled together, then device complexity is reduced, but flexibility is lost
Solution Approach 1:
The workpiece transport system is segmented into independently controllable workpiece carriages for each path. Each carriage can be displaced independently along its respective path, allowing flexible control of workpiece supply timing and positioning. This segmentation enables adaptive coordination between the two paths while maintaining relatively simple individual carriage designs
Data Source
AI summary
A manufacturing cell comprises a machine tool that has a tool carrier carrying a tool unit and has two adjacent workpiece paths oriented in a longitudinal direction. The tool unit can be displaced relative to a machine bed of the machine tool in a transverse direction and in a vertical direction. At least one workpiece carriage per workpiece path can be displaced in the longitudinal direction along the machine tool. The tool unit can be displaced in the longitudinal direction relative to the machine bed and/or relative to the workpiece carriages. The tool carrier overhangs or projects beyond the workpiece paths. The individual workpiece carriage can also be displaced in the longitudinal direction along the workpiece supply. Furthermore, the workpiece supply has at least one lowerable or tiltable stop device per workpiece path.