Bending Device with Integrated Pre-Cutting and Finishing Tools
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Solution Overview
Problem
Current bending devices separate bending and cutting sections, leading to inefficiencies in the machining cycle and often result in torn cuts that require additional processing, negating the time optimization benefits.
Innovation Solution
Incorporating a pre-cutting element and a cutting element in each bending/cutting section, with the pre-cutting element activated first to initiate the cutting process along a specific path, ensuring a clean and straight cut without subsequent machining needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a single cutting element is used to perform the complete cutting operation, then the machining cycle time is reduced, but the cutting quality deteriorates resulting in torn cuts that require additional machining
Solution Approach 1:
The cutting operation is divided into two distinct phases performed by two separate cutting elements: a pre-cutting element that performs the initial cut, and a finishing cutting element that completes the cut with high precision. This segmentation allows each element to be optimized for its specific function, resolving the contradiction between speed and quality.
Solution Approach 2:
The pre-cutting element performs a preliminary cutting action before the main cutting element operates. This preliminary action prepares the material by creating an initial separation, which enables the subsequent finishing cut to be performed faster and with better quality, thus reducing the overall cycle time while maintaining precision.
2Ease of manufacture
If bending and cutting sections are separated, then each section can be optimized independently, but the overall productivity decreases due to profile transfer requirements
Solution Approach 1:
The bending section and cutting section are merged into an integrated unit where both bending forms and cutting elements (pre-cutting and finishing) are positioned within the same bending section. This allows the profile to undergo bending and cutting operations sequentially without transfer, maintaining independent optimization of each function while eliminating transfer time and improving productivity.
3Manufacturing precision
If a pre-cutting element is added to perform initial cutting, then cutting quality improves, but the device complexity increases
Solution Approach 1:
Both cutting elements are mounted on the same movable blank holder jaw, which serves multiple functions: clamping the profile during bending, positioning the cutting elements, and providing the movement mechanism for both pre-cutting and finishing operations. This multi-functionality reduces overall device complexity despite adding a second cutting element.
Solution Approach 2:
The blank holder jaw acts as an intermediary structure that carries and coordinates both cutting elements. It provides a unified mounting platform and movement mechanism, simplifying the control and actuation system compared to having separate mounting structures for each cutting element, thus managing device complexity.
Data Source
AI summary
The invention relates to a device for bending profile members in which the bending head includes at least one stage for bending the profile members and cutting the profile members after bending, provided with a tool for cutting the profile members including a pre-cutting member suitable for starting the cutting of the profile members, and a cutting member suitable for finishing the cut started by the pre-cutting member.