Adjustable Stop Clamping Mechanism for Machine Tools
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Solution Overview
Problem
Existing stop units in processing machines, particularly molding machines, face challenges in adjusting to different cutting circle diameters and throat depths, requiring difficult-to-access screws for clamping, which can lead to operational hazards and inefficiencies.
Innovation Solution
A stop unit with a mechanical clamping system using a two-armed lever and compression spring, where the clamping force is generated mechanically and can be easily released using a pneumatic, hydraulic, electric, or electromagnetic drive, allowing for quick adjustment and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional screw clamping is used for the stop unit, then the clamping structure is simple, but the accessibility for adjustment is poor and operator safety is compromised
Solution Approach 1:
The clamping mechanism transitions from a static screw system to a dynamic lever-based system with movable clamping elements. The lever can be actuated to move the clamping element between clamped and unclamped positions, providing dynamic control over the stop adjustment process and improving operator accessibility.
Solution Approach 2:
The traditional screw-based mechanical clamping system is replaced with a lever-based mechanical advantage system. The lever amplifies the operator's input force to generate sufficient clamping force, eliminating the need for difficult-to-access screw adjustments while maintaining structural simplicity.
2Manufacturing precision
If the stop is clamped securely to maintain positioning accuracy, then machining precision is improved, but the effort required to release and adjust the stop increases
Solution Approach 1:
The clamping system incorporates a lever that can be quickly actuated between clamped and unclamped states. This dynamic mechanism allows the stop to be securely held during machining operations while enabling rapid release and adjustment when tool changes occur, significantly reducing adjustment time.
Solution Approach 2:
The lever-based clamping mechanism is designed to engage and disengage quickly, allowing the operator to prepare the stop for adjustment in advance. The preliminary positioning of the lever facilitates rapid transition between clamped and unclamped states, minimizing downtime during tool changes.
3Stability of the object's composition
If the clamping force is increased to ensure secure stop positioning, then workpiece guidance stability is improved, but the force required to actuate the clamping mechanism increases
Solution Approach 1:
The lever-based clamping mechanism provides dynamic force multiplication. A relatively small force applied to the lever is amplified through the lever arm ratio to generate a large clamping force on the stop, ensuring stable positioning without requiring significant actuation force from the operator.
Solution Approach 2:
The lever mechanism combines the actuation force application point with the clamping force generation point through a mechanical advantage arrangement. This merging of functions allows the operator to apply force at a convenient location while the system automatically generates the necessary clamping force at the stop contact point.
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 precise and efficient adjustment of the stop unit to match various tool configurations, ensuring high machining quality while minimizing operator risk and simplifying the clamping process.
Implementation Method 1
The force is generated by at least one compression spring arranged on an axle fixed in the counter-stop
Implementation Method 2
The transmission element is advantageously a two-armed lever, on one arm of which the force acts in the form of a compressive force, and on the other arm of which generates the clamping force
Data Source
Figure 1
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Figure 3
AI summary
The clamping device is designed for an adjustable stop (12) of a machine tool. The stop (12) serves to guide workpieces through the machine tool. The clamping device has a clamping element (33) with which the stop (12) can be clamped against a counter stop (25). The clamping element (33) is provided on a transmission element (23) upon which a force (F1) acts, which is converted into a clamping force (F2) acting on the clamping element (33). A release unit (51) is provided for releasing the clamp. The machine tool is equipped with at least one such clamping device.