Wedge Force Generator for High Compression in Short Stroke
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Solution Overview
Problem
Existing pressing machines fail to generate a high compressive force efficiently over a short stroke, particularly in applications like shortening wall discs for water pipes, where a large force is required with minimal adjustment travel.
Innovation Solution
A force generator with a housing and a movable output wedge, driven by a wedge mechanism that translates the applied force into a linear movement, utilizing oblique contact surfaces to achieve a high compressive force over a short stroke, allowing for adjustable force magnitudes through varying surface angles and low-friction materials to minimize losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional pressing machine with press jaws is used, then the pressing machine can provide a defined force over a defined stroke, but it cannot generate high compressive force efficiently over a short stroke
Solution Approach 1:
The patent introduces a wedge mechanism that converts linear motion in one dimension into linear motion in another dimension. The drive wedge moves perpendicular to the sliding direction of the output wedge, translating external pressing force into linear movement of the output wedge through oblique contact surfaces, thereby achieving high force multiplication over short stroke
Solution Approach 2:
The patent employs adjustable contact surface angles on the wedge mechanism to change the force transmission ratio. By varying the angle between the contact surfaces and the direction of movement, the system can optimize the balance between output force and stroke length according to different application requirements, enabling high compressive force with minimal adjustment travel
2Adaptability or versatility
If the direction of force application is changed via cam drive, then the pressing machine can drive a press jaw, but the direction of force application and available force do not meet every application requirement
Solution Approach 1:
The force generator is designed as a universal device that can be applied to various tasks requiring high compressive force over short stroke. The wedge mechanism with adjustable contact angles can adapt to different applications such as shortening wall discs, inserting press-fit sockets, or other compression tasks, providing both directional flexibility and force adaptability
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
Enables the generation of high compressive forces with a short stroke, facilitating tasks like tearing off pipe sections and inserting press-fit sockets, with the ability to apply force from different angles and reset the system for efficient operation.
Implementation Method 1
a drive wedge (108) for transmitting an externally applied pressing force into a linear movement of the output wedge (106) relative to the housing (102), wherein the output wedge (106) and the drive wedge (108) have contact surfaces (110, 112) extending obliquely to the direction of movement of the drive wedge (108)
Data Source
AI summary
The invention relates to a force generator for generating a linear pressure force, including a housing, an output wedge displaceably arranged in the housing, and a drive wedge for transmitting an externally exerted pressing force into a linear movement of the output wedge. The output wedge is connected to a first pressure element. The housing is connected to a second pressure element. A force applied to the drive wedge causes displacement of the first pressure element relative to the second pressure element. The force generator solves the technical problem of providing a high pressure force and using the known press jaws for this purpose.