Turret Coolant Sealing With Reciprocating Rod and Elastic Ring
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Solution Overview
Problem
Conventional turret devices with coolant supply mechanisms face issues with coolant leakage due to chip accumulation between the piston and turret, leading to seal ring damage and difficulty in replacing parts without stopping the machine tool.
Innovation Solution
A turret device design with a coolant supply mechanism positioned on the front surface, utilizing a reciprocating rod with an elastic body that prevents chip entry and allows easy maintenance by closing the housing space with a lid, enabling quick part replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a seal ring is provided on the distal end of the piston to prevent coolant leakage, then liquid-tightness between the piston and turret is improved, but chips can be caught between the seal ring and turret surface, gradually damaging the seal ring and impairing sealing property
Solution Approach 1:
The invention divides the sealing function into two separate components: a seal ring on the piston for liquid-tightness, and a chip preceptor (groove structure) that segments and collects chips before they reach the seal ring. This segmentation prevents chips from damaging the seal ring while maintaining reliable sealing.
Solution Approach 2:
The chip preceptor groove acts as an intermediary element between the chip-generating machining area and the seal ring. It intercepts and collects chips, preventing them from directly contacting and damaging the seal ring, thus protecting the sealing function.
2Ease of operation
If the coolant supply mechanism is arranged behind the turret, then the piston can be pressed against the rear surface of the turret to supply coolant, but replacement of the seal ring becomes difficult and requires long machine tool stoppage
Solution Approach 1:
The invention extracts the seal ring from its traditional position on the piston and relocates it to the chip preceptor groove structure. This extraction allows the seal ring to be easily accessible for replacement without disassembling the entire coolant supply mechanism, significantly improving maintenance ease.
Solution Approach 2:
Instead of making the piston removable for seal ring replacement, the invention inverts the approach by making the chip preceptor groove structure with the integrated seal ring easily removable. This inversion simplifies the replacement process and reduces machine tool stoppage time.
3Reliability
If chips are caught between the distal end of the piston and rear surface of the turret, then a gap is formed allowing coolant leakage, but providing a seal ring makes replacement difficult without stopping the machine tool
Solution Approach 1:
The chip preceptor groove structure automatically collects and retains chips, preventing them from causing gaps and coolant leakage. This self-service function eliminates the need for frequent manual intervention and seal ring replacement, reducing machine tool stoppage time.
Solution Approach 2:
The chip preceptor groove performs preliminary action by collecting chips before they can reach and damage the seal ring. This preliminary chip collection prevents the formation of gaps that would lead to coolant leakage, maintaining reliable sealing without requiring frequent maintenance interruptions.
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
Prevents coolant leakage by keeping chips out of the coolant supply mechanism and allows for rapid maintenance without stopping the machine tool, enhancing operational efficiency.
Implementation Method 1
an annular elastic body arranged on the distal end of the reciprocating rod
Implementation Method 2
the piston is retracted by a biasing force of a compression coil spring arranged in the piston holder
Data Source
AI summary
An outer cylinder unit (20) of a turret device (1) has a cylindrical housing space (24) in a front side thereof and has a coolant discharge flow path (22) opened as a connection port (22a) in an inner peripheral surface (24a) of the housing space (24), and the connection port (22a) is formed at a predetermined pitch interval in a circumferential direction. A coolant supply mechanism (25) arranged on an end of a shaft unit (10) is disposed in the housing space (24) and an opening of the outer cylinder unit (20) is closed by a lid (39). The coolant supply mechanism (25) includes a reciprocating rod (30) advancing and retracting with respect to the inner peripheral surface (24a) of the housing space (24) and a shaft receiving unit (26) supporting the reciprocating rod (30). The reciprocating rod (30) has a supply hole (34, 53) opened in a distal end thereof and has an annular elastic body (50) arranged to surround the opening of the supply hole (34, 53). When the reciprocating rod (30) advances, the elastic body (50) comes into contact with the inner peripheral surface (24a) of the housing space (24) to surround the connection port (22a) in the inner peripheral surface (24a).