Machine Tool Lighting with Integrated Interlock Switch
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Solution Overview
Problem
The existing machine tools require a separate enabling switch, either connected via a cable or on the operation panel, which increases costs, occupies space, and reduces work efficiency due to the need for operators to operate the switch from a distance while observing machining operations.
Innovation Solution
Mounting the momentary switch on the lighting apparatus, allowing operators to cancel interlock restrictions without a separate switch, improving visibility and efficiency by enabling operation only when the lighting apparatus is on, and requiring both hands to operate the switch and activation button simultaneously for safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate enabling switch connected via cable is used, then the operator can stop the driving apparatus at emergency, but it increases cost and occupies space at the front of the machining chamber
Solution Approach 1:
The enabling switch is integrated into the operation panel, merging the emergency stop function with the existing control interface. This eliminates the need for a separate cable-connected switch, reducing device complexity while maintaining the reliability of emergency stop capability.
Solution Approach 2:
The operation panel serves multiple functions: it controls machining operations and also houses the enabling switch for emergency stop. This multi-functionality reduces the need for separate components, thereby reducing device complexity and cost while preserving safety functionality.
2Device complexity
If the enabling switch is provided on the operation panel, then device complexity is reduced, but work efficiency decreases due to difficulty in operating the distant switch while observing the machining unit
Solution Approach 1:
The lighting apparatus is made movable to dynamically adjust the position of the enabling switch within the operation panel. This allows the switch to be positioned optimally for operator access while maintaining the integrated design, thereby improving work efficiency without increasing device complexity.
Solution Approach 2:
The operation panel is designed with the enabling switch positioned in a location that is easily accessible to the operator while observing the machining unit. This local optimization of switch placement improves ergonomics and work efficiency while maintaining the integrated design benefits.
3Productivity
If the momentary switch is mounted on the lighting apparatus, then work efficiency is improved by eliminating separate switch, but the lighting apparatus becomes more complex
Solution Approach 1:
The momentary switch is merged into the lighting apparatus, combining the illumination function with the enabling switch function. This integration improves work efficiency by eliminating the need for a separate switch while the movable design of the lighting apparatus keeps the added complexity manageable.
Solution Approach 2:
The lighting apparatus serves dual purposes: providing illumination for the machining unit and housing the enabling switch for emergency stop. This multi-functionality improves work efficiency by consolidating controls while the movable design helps manage the increased complexity.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A machine tool comprises a machining unit 122 for machining a workpiece W1 , a housing 110 configured to accommodate a machining unit 122, a lighting apparatus 150 configured to illuminate the machining unit 122, an interlock system U1 configured to impose a restriction or prohibition on the operation of the machining unit 122 when an interlock condition is met, a momentary switch SW1 mounted on the lighting apparatus 150, and a cancelation system U2 configured to cancel at least part of the restriction or prohibition imposed by the interlock system U2 by an operation of the momentary switch SW1.