Piston Ring Separation Mechanism for Narrow-Width Stack Cutting
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Solution Overview
Problem
Conventional methods struggle to reliably separate piston rings with narrow widths one by one due to positional deviations and entanglement issues during cutting, leading to incomplete cutting processes.
Innovation Solution
A cutting-out apparatus with a retaining unit, cutting-out unit, detecting unit, pushing-out unit, restricting unit, and moving unit that aligns piston rings, detects boundaries, and inserts pushing-out and restricting units to separate piston rings one by one, even with positional deviations, using a combination of claws and actuators to ensure precise separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cutting methods are used for narrow-width piston rings, then the cutting process is simpler, but the piston rings cannot be successfully separated one by one due to positional deviations and entanglement
Solution Approach 1:
The cutting device is divided into multiple functional components: a pushing-out unit with pushing-out claws, a restricting unit with restricting claws, and a detecting unit. These segmented components work cooperatively to address different aspects of the cutting problem, enabling reliable separation of narrow-width piston rings while managing device complexity through modular design
Solution Approach 2:
The pushing-out claws and restricting claws act as intermediary elements that insert into the dividing portion between piston rings. These intermediary components facilitate the separation process by physically engaging with the piston ring boundaries detected by the detecting unit, enabling precise separation without direct manipulation of the narrow-width rings themselves
2Manufacturing precision
If pushing-out and restricting units are inserted into the dividing portion based on detection, then positional deviations are compensated, but the device structure becomes more complex
Solution Approach 1:
The detecting unit detects the actual position of boundaries between piston rings and provides feedback to control the insertion position of the pushing-out and restricting units. This feedback mechanism compensates for positional deviations in the stacked piston rings, ensuring precise cutting even when rings are misaligned, while the control system manages the increased device complexity
Solution Approach 2:
The detecting unit performs preliminary detection of boundary positions before the pushing-out and restricting units are inserted. This preliminary action allows the system to adjust the insertion positions in advance, ensuring that the cutting components align with the actual boundaries even when there are positional deviations in the stacked piston rings
Data Source
AI summary
A retaining unit that retains a stack body in which piston rings are stacked in an axial direction, a cutting-out unit that delivers a piston ring at the tip end of the stack body from the stack body, and a detecting unit that detects a boundary between the piston rings that are adjacent to each other in the stack body are included, and the cutting-out unit includes a moving unit that moves a pushing-out unit and a restricting unit, and after inserting the pushing-out unit and the restricting unit into a dividing portion that is a boundary between the piston ring at the tip end and a piston ring that is adjacent to the piston ring at the tip end in the stack body, in a state in which movement of the piston ring that is adjacent to the piston ring at the tip end in a delivering direction in which the piston ring at the tip end is delivered is restricted by the restricting unit, the moving unit moves the pushing-out unit in the delivering direction, so that the piston ring at the tip end is separated from the stack body, and the piston ring at the tip end is delivered along the retaining unit.