Pneumatic Machining Device With Segmented Piston Chambers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pneumatic machining devices struggle to maintain a constant position and pressure while machining a workpiece, leading to uneven machining results.
Innovation Solution
The pneumatic machining device incorporates a piston assembly with a sealing system that divides the interior space into chambers to control gas pressure, allowing for precise movement and rotation of the machining tool, ensuring constant pressure and position through the use of external pressure sources and sealing groups to maintain uniform machining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If pneumatic machining device uses gas pressure to drive machining tool, then machining speed and flexibility are improved, but position stability and pressure consistency deteriorate
Solution Approach 1:
The piston assembly is divided into multiple chambers (first chamber and second chamber) separated by a piston group. The first chamber receives gas from a first external pressure source to drive the piston group for positioning, while the second chamber receives gas from a second external pressure source to drive the machining tool. This segmentation allows independent control of position and machining pressure, resolving the contradiction between speed flexibility and position stability.
Solution Approach 2:
A coupling member is introduced as an intermediary between the piston group and the machining tool. The coupling member includes a coupling body that couples to the piston group and a coupling head that couples to the machining tool, with a gas passage connecting them. This intermediary structure allows gas to be transmitted from the second chamber through the coupling member to drive the machining tool, enabling precise control of both position and machining pressure independently.
2Ease of operation
If pneumatic machining device uses gas pressure control, then ease of operation is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent employs a sealing system with sealing groups in both chambers to maintain consistent gas pressure. The first sealing group seals the first chamber to maintain positioning pressure, while the second sealing group seals the second chamber to maintain machining pressure. This feedback mechanism ensures that gas pressure remains constant throughout the machining process, preventing pressure fluctuations that would cause uneven machining and improve manufacturing precision while maintaining ease of pneumatic operation.
3Device complexity
If pneumatic machining device uses simple pressure control, then device complexity is reduced, but machining uniformity deteriorates
Solution Approach 1:
The device is segmented into distinct pressure control zones: the first chamber for positioning control and the second chamber for machining pressure control. Each chamber has its own sealing group and external pressure source connection. This segmentation allows simple yet effective independent control of each function, achieving uniform machining through consistent pressure control without requiring overly complex integrated control systems.
Solution Approach 2:
The piston group and coupling member work together as a self-contained mechanism where the piston group automatically transmits motion through the coupling member to the machining tool. The gas pressure system self-regulates through the sealing groups, maintaining consistent pressure without requiring external intervention or complex control algorithms, thereby achieving uniform machining with relatively simple device architecture.
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 enables consistent machining by maintaining constant pressure and position, resulting in uniform machining of the workpiece surface.
Implementation Method 1
The piston group may be driven under pressure of the first external pressure source to move away from the fixing plate
Implementation Method 2
a sealing system that divides the interior space into chambers to control gas pressure
Implementation Method 3
machining a workpiece by polishing
Data Source
AI summary
Pneumatic machining device includes a fixing plate, a hollow piston shell, a piston group, a machining tool, a first sealing group, and a second sealing group. The piston shell is fixed to the fixing plate and coupled to a first external pressure source and second external pressure source to feed gas into the piston shell to drive the piston group and the machining tool, respectively. The piston group and the first and second sealing groups are received inside the piston shell. The piston group is driven by the first external pressure source to move away from the fixing plate. The first and second sealing groups divide the piston shell into a number of chambers for controlling a gas pressure. The machining tool is coupled to the piston group and extends out of the piston shell to machine a workpiece as the piston group moves away from the fixing plate.