Robot Arm Mechanical Stop Device for Adjustable Swivel Angle
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Solution Overview
Problem
Existing robot arm stop devices are not easily adjustable to change the maximum swivel angle of rotary joints, making it difficult to modify the configuration of robotic arms during assembly and operation.
Innovation Solution
A mechanical stop device with a counter-stop body and receptacle system that allows for quick and safe adjustment of the maximum swivel angle by repositioning the counter-stop body, utilizing a form-fitting connection profile and counter-profile that can be inserted and removed axially, without additional fastening means, to change the angular division of the rotary joint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical stop device is used to limit the maximum swivel angle of a rotary joint, then the joint's angular range is controlled, but the adjustment of the maximum swivel angle becomes complex and time-consuming
Solution Approach 1:
The stop device is segmented into a stop body and a counter-stop body that can be independently positioned and locked. The counter-stop body can be moved to different positions on the support arch and secured using a locking mechanism, allowing discrete adjustment of the maximum swivel angle without requiring complex continuous adjustment mechanisms
Solution Approach 2:
The support arch is pre-configured with multiple receptacles at predetermined angular positions. The counter-stop body can be quickly locked into these pre-positioned receptacles, eliminating the need for complex real-time adjustment mechanisms and enabling rapid change of the maximum swivel angle
2Ease of operation
If additional fastening means are used to secure the counter-stop body, then the mechanical stability is improved, but the ease of adjustment is reduced
Solution Approach 1:
The locking mechanism integrates the fastening function into the counter-stop body itself. The inclined surface and locking element are combined in a single component that can be actuated by a simple lifting motion, eliminating the need for separate fastening means and enabling tool-free adjustment
Solution Approach 2:
The locking mechanism is designed to be self-actuating through a simple lifting motion of the counter-stop body. The inclined surface automatically engages with the locking element when the counter-stop body is lifted, and the spring automatically maintains the locked position, requiring no additional fastening operations
Data Source
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AI summary
The invention relates to a robot arm (2), comprising a mechanical stop device (13) having at least one counter-stop body (16.1, 16.2), which has a shape, which, in interaction with a respective corresponding shape of a receptacle (18), is designed to retain the counter-stop body (16.1, 16.2), whenever the counter-stop body is inserted in one of the plurality of receptacles (18), on the receptacle (18), in which the counter-stop body is inserted, both in the circumferential direction and in a radial direction with respect to the axis of rotation (D) of the swivel joint, in a form-fitting manner.