Work Support Air-Passage Layout for Accurate Rod State Detection
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Solution Overview
Problem
The existing work support device fails to distinguish between the retracted release state, the state where the support rod does not ascend during advancement and locking, and the advanced lock state due to issues with rod seal deterioration, leading to swarf and cutting fluid entering and causing the support rod to stick, preventing proper movement.
Innovation Solution
The work support incorporates an ascent-detecting air supply port, a descent-detecting air supply port, and a valve mechanism that differentiates between states by controlling air pressure levels, ensuring the support rod can accurately distinguish between retracted release, non-ascending, and advanced lock states through specific pressure readings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single air supply port and a single air passage are used, then the device structure is simple, but the device cannot distinguish between the advanced lock state and the state where the support rod does not ascend
Solution Approach 1:
The single air supply port is segmented into two separate air supply ports: an ascent-detecting air supply port connected to the ascent-detecting air passage, and a descent-detecting air supply port connected to the descent-detecting air passage. This segmentation allows independent detection of different pressure conditions, enabling the device to distinguish between the advanced lock state and the non-ascending state with high precision.
Solution Approach 2:
The invention adds a dimensional aspect to state detection by creating two independent detection pathways (ascent and descent) rather than relying on a single detection channel. This multi-dimensional approach provides redundant and complementary information about the system state, resolving the ambiguity between different operational states.
2Reliability
If pressurized air is supplied to a single air passage, then the pressure control is simple, but the device cannot detect whether the support rod has properly ascended
Solution Approach 1:
The invention implements feedback mechanisms through two independent pressure detection pathways. The ascent-detecting air passage provides feedback on whether the support rod has ascended (by detecting pressure changes when the air outlet is closed), and the descent-detecting air passage provides feedback on the valve mechanism's closing action. This dual feedback system ensures reliable detection of proper operation and enables appropriate control responses.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows the work support to effectively differentiate between the retracted release state, the state where the support rod does not ascend during advancement and locking, and the advanced lock state, ensuring proper operation and preventing sticking issues caused by swarf and cutting fluid entry.
Implementation Method 1
The work support is capable of distinguishing among the states: a retracted release state; a state in which a support rod does not ascend when driven for advancing and locking; and an advanced lock state, based on a combination of: a state of pressurized air supplied to the ascent-detecting air supply port; and a state of pressurized air supplied to the descent-detecting air supply port
Data Source
AI summary
An ascent-detecting air supply port (33), a descent-detecting air supply port (43), and an air discharge port (44) are provided to a housing (2). The ascent-detecting air supply port (33) is communicatively connected to an air outlet (38) by an ascent-detecting air passage (39). The descent-detecting air supply port (43) is communicatively connected to the air discharge port (44) by a descent-detecting air passage (45). The descent-detecting air passage (45) is closed by a valve mechanism (49) including: a valve surface (50) provided on a piston portion (15); and a valve seat (51) provided on an inner surface of the housing (2), when an advance piston (14) is retracted to a lowered position.