Clamp Profile Mounting with Fixed References for Repeatable Positioning
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Solution Overview
Problem
Existing processing center technologies fail to achieve precise and repeatable positioning of workpieces, leading to inaccuracies in processing due to non-identical positions on stands for identical workpieces.
Innovation Solution
A method involving an anthropomorphic robot that uses a Reference Positioning System (RPS) with six fixed and movable references to securely position profiles on a turntable, ensuring consistent placement and stability by utilizing inclined planes and mechanical components for precise mounting and unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional mounting methods are used, then the device complexity is low, but the positioning precision and repeatability are insufficient
Solution Approach 1:
The mounting system is segmented into multiple independent reference elements (first lower fixed reference, second front fixed reference, third rear fixed reference, fourth lateral fixed reference) that work together to define the complete position of the profile. Each reference element can be independently positioned and adjusted, allowing precise control of the profile's location while keeping individual components simple.
Solution Approach 2:
The profile itself serves as the mounting target by directly resting on the fixed references during insertion. The profile's own geometry (ends and surfaces) engages with the reference elements without requiring additional positioning fixtures or complex alignment procedures, enabling self-positioning that simplifies the overall system.
2Manufacturing precision
If profiles are positioned without fixed references, then the device complexity is low, but the positioning repeatability deteriorates
Solution Approach 1:
The fixed reference elements are pre-positioned and fixed to the stand before profile insertion. These references establish predetermined, repeatable positions that guide the profile into consistent locations during each mounting operation, ensuring repeatability without requiring complex real-time adjustment mechanisms.
Solution Approach 2:
The set of fixed reference elements serves multiple functions simultaneously: the first lower fixed reference provides vertical positioning, the second front fixed reference provides front-to-back positioning, the third rear fixed reference provides additional vertical support, and the fourth lateral fixed reference provides lateral positioning. This multi-functional reference system achieves comprehensive positioning control with a relatively simple structure.
3Manufacturing precision
If profiles are not laterally constrained, then the device complexity is low, but the positioning accuracy and stability deteriorate
Solution Approach 1:
The lateral constraining function is merged with the profile insertion operation itself. As the profile is inserted into the stand, it naturally engages with the fourth lateral fixed reference, which provides lateral positioning and constraint. This integration eliminates the need for separate lateral constraining mechanisms while maintaining positioning accuracy.
Solution Approach 2:
The fourth lateral fixed reference acts as an intermediary element between the profile and the stand structure. It transfers lateral positioning forces from the stand to the profile during insertion, ensuring accurate lateral positioning without requiring complex active constraining mechanisms. The reference element mediates the interaction between the profile and mounting system.
Data Source
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AI summary
A method for mounting on a clamp parts or profiles (5) to be worked or already worked (6) in a processing center (1) provided with a supporting frame (2) for a turntable (3) with two or more stepped positions or stands or machining stations (4), comprising a robot (7), which is anthropomorphic on the wrist, for the loading/unloading of the profiles (5) to be worked and of the subsequently worked profiles (6), from a loading basket (10) toward an unloading basket (11) with multiple receptacles. The method provides for the insertion of the profile to be worked (5), by means of the robot (7), in a region arranged below at least one first open clamp (15a, 15b, 15c) that is present in the stand (4); this is followed by the resting of the profile to be worked (5) on at least one first lower fixed reference (18) provided on a fixed front jaw (22a, 22b, 22c) of the at least one first open clamp (17a, 17b, 17c). This is followed by the resting of the profile to be worked (5) on a second and/or third front fixed reference (19, 20) present on the fixed front jaw (22a, 22b, 22c) of the at least one first open clamp (17a, 17b, 17c). This is followed by the resting of the profile to be worked (5) on at least one fourth lateral fixed reference (21) present on one side of the fixed front jaw (22a, 22b, 22c) of the at least one first open clamp (17a, 17b, 17c). Then the lateral closing of the profile to be worked (5) occurs by means of a first movable presser (27) associated with the stand (4) and then the upper closing of the profile to be worked (5) occurs by means of at least one second presser (29a, 29b) associated with the stand (4). The profile to be worked (5) is then closed by means of the movement of the second jaw (23a, 23b, 23c) of the at least one first clamp (17a, 17b, 7c).