Spring Coiling Machine Cutting Tool Trajectory Control
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Solution Overview
Problem
Existing spring coiling machines lack flexibility and user-friendliness in producing helical springs with optimized sectional patterns, cutting burr positions, and other parameters, leading to inefficiencies in productivity and tool service life.
Innovation Solution
A spring coiling machine equipped with a programmable trajectory adjustment system for the cutting tool, allowing for flexible setting of different trajectories without manual mechanical intervention, including straight, elliptical, and asymmetrical paths, optimized through independent control of linear and pivoting movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a programmable trajectory adjustment system is implemented, then flexibility and adaptability in cutting trajectories are improved, but device complexity increases
Solution Approach 1:
The patent replaces manual mechanical adjustment systems with a programmable control system that uses numerical control (NC) to regulate the cutting tool's trajectory. The control device stores trajectory data and automatically generates control signals, eliminating the need for complex mechanical adjustment mechanisms while achieving flexible trajectory customization.
Solution Approach 2:
The system dynamically adjusts the cutting tool's trajectory by superimposing a reciprocating linear movement with an oscillating pivoting movement through independently controllable drives. This dynamic control allows the trajectory shape and position to be varied programmatically during operation, providing flexibility without requiring multiple fixed mechanical configurations.
2Ease of operation
If manual mechanical intervention is required for trajectory adjustment, then device complexity is reduced, but ease of operation and productivity deteriorate
Solution Approach 1:
The control device automatically generates control signals for the cutting tool's trajectory based on stored trajectory data. The system performs self-adjustment through automated control rather than requiring manual mechanical intervention, improving ease of operation while managing complexity through software-based solutions.
3Adaptability or versatility
If cutting trajectory is fixed, then device complexity is reduced, but adaptability for different spring specifications deteriorates
Solution Approach 1:
The cutting device is designed with universal adaptability through a programmable control system that can execute multiple trajectory types (straight, elliptical, asymmetrical) using the same hardware platform. The control device stores various trajectory data and can switch between them based on spring specifications, eliminating the need for dedicated mechanical adjustment systems for each trajectory type.
4Productivity
If programmable trajectory control is implemented, then productivity and spring quality are improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical trajectory adjustment mechanisms with a programmable control system that uses software and electronic signal generation. This substitution improves productivity through automated, precise trajectory control while managing hardware complexity by eliminating mechanical adjustment components.
Data Source
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AI summary
A spring coiling machine for manufacturing helical springs (200) by coiling has a feeding device for supplying wire (115) to a forming device (120), wherein the forming device comprises at least one coiling tool (122, 124) and at least one pitching tool (130), as well as a cutting device for separating a finished helical spring from the supplied wire after completion of a forming operation. The cutting device has a cutting tool (152) which can be moved along a predefinable closed path by means of a cutting tool drive system. A control device serves to control the feeding device, the forming device, and the cutting device based on an NC control program. The spring coiling machine has a programmable path setting system for adjusting the shape and/or position of the path to be traversed by the cutting tool.With the help of this trajectory setting system, it is possible to select either a straight trajectory, an elliptical or egg-shaped trajectory (BK1) that is mirror-symmetric to a plane of symmetry with a predefinable ratio of height to width, or an asymmetrical trajectory (BK3) with a non-mirror-symmetrical path that deviates from an elliptical or egg shape.