Translatory Tool Module for Finishing with Pneumatic Pressure Control
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Solution Overview
Problem
Current automated fine machining technologies are limited in processing complex geometric elements, as they often require manual intervention for surface finishing, and existing tool modules lack efficient mechanisms for maintaining consistent contact pressure and adapting to varying machining conditions.
Innovation Solution
A tool module with a fluid pressure system that uses a piston-cylinder mechanism to transmit pressure close to the fine machining element, allowing for adjustable and continuous contact pressure control, and the option for electrical force transmission, enabling translational movement for uniform machining of flat and curved surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a pneumatic cylinder is connected to a tool holder and acts on the entire oscillating head, then contact pressure can be controlled, but the mass between the pneumatic cylinder and the actual tool becomes relatively large
Solution Approach 1:
The patent extracts the pressure control function from the traditional pneumatic cylinder acting on the entire oscillating head, and relocates it to a pressure device with a piston connected directly to the tool holder. This separates the mass of the oscillating head from the controlled component, reducing the moving mass that affects contact pressure responsiveness.
Solution Approach 2:
The patent introduces a piston as an intermediary element between the pneumatic pressure source and the tool. The piston transmits the contact force directly to the tool holder, enabling precise control of contact pressure while minimizing the mass that needs to be accelerated during oscillation.
2Extent of automation
If automated fine machining is implemented using existing tool modules, then automation extent increases, but manufacturing precision deteriorates for complex geometric elements
Solution Approach 1:
The patent implements dynamic control of contact pressure through a pneumatic system that can continuously adjust the force applied by the piston. This allows the automated system to adapt to varying machining conditions and maintain high precision on complex geometric elements by optimizing contact pressure in real-time.
Solution Approach 2:
The patent changes the contact pressure parameter dynamically during the machining process using the pneumatic pressure system. By adjusting the air pressure to the piston, the system can optimize the contact force between the tool and workpiece for different stages of machining and different geometric features, maintaining high manufacturing precision.
3Productivity
If the spindle interface is connected to a robot system's machining spindle, then productivity increases, but the contact force control becomes less precise
Solution Approach 1:
The patent replaces mechanical contact force control mechanisms with a pneumatic pressure system. This substitution allows for smoother, more precise control of contact force through gas pressure regulation, while maintaining the high-speed capabilities of the robot spindle system.
Solution Approach 2:
The patent uses a pneumatic pressure system with a piston to control contact force, replacing traditional mechanical spring or weight-based systems. The pneumatic system provides continuous, adjustable, and precisely controllable contact force while being compatible with high-speed automated machining operations.
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 high-quality, automated surface finishing of complex geometries with reduced tool wear, allowing for full-surface contact and improved machining precision, particularly beneficial for sheet metal forming and injection molding tools.
Implementation Method 1
the contact force can be determined or co-determined by the pressure of the fluid. The fluid pressure system has at least one pressure transmission device arranged in the at least one translation unit for transmitting the fluid pressure to the at least one finishing element.
Implementation Method 2
a tool is connected to a shaft via an eccentric device, which is axially displaceable relative to a hollow shaft. The eccentric device translates a rotary drive by means of a spindle into a linear oscillating movement of an oscillating head carrying the tool.
Data Source
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AI summary
A translationally acting tool module for fine machining, comprising at least one fine machining element (12, 34, 48, 54) having a contact stroke, at least one contact force system for influencing a contact force of the at least one fine machining element (12, 34, 48, 54) on a workpiece surface to be machined, and drive means for driving the at least one fine machining element (12, 34, 48, 54), wherein the at least one fine machining element (12, 34, 48, 54) is arranged on at least one translation unit (19, 43, 61, 81, 91, 92) driven by means of the drive means and linearly guided, is characterized by at least one in the translation unit (19, 43, 61, 81, 91, 92) or in at least one of the translation units (19, 43, 61, 81, 92). 91, 92) arranged to transmit a force to the finishing element (12, 34, 48, 54) or to at least one of the finishing elements (12, 34, 48,54) serving transmission device, wherein the transmission device is a pressure transmission device comprising a piston-cylinder system and operated by fluid pressure or an electrically operated power transmission device.