Integrated Cutting and Bevelling Machine for Metal Bars
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Solution Overview
Problem
Existing cutting and bevelling processes for metal bars and tubes are inefficient, requiring separate machines and extensive handling, leading to high processing times and maintenance costs, especially when dealing with bars of varying diameters and lengths.
Innovation Solution
A cutting machine with motorized rotatable mandrels and a integrated cutting and bevelling unit that allows for simultaneous cutting and bevelling operations, where the bar is rotated and the cutting and bevelling tools move in synchronized, opposing directions to minimize vibration and optimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate cutting and bevelling machines are used, then each operation can be performed with dedicated equipment, but processing time increases and handling complexity increases
Solution Approach 1:
The patent combines cutting and bevelling operations into a single machine unit. The cutting device with rotating blade and the bevelling device with chamfering tool are integrated on the same machine, allowing both operations to be performed on the bar without transferring it between separate machines, thereby reducing processing time and handling complexity.
Solution Approach 2:
The patent enables continuous processing by performing cutting and bevelling in sequence without interrupting the bar's rotation or requiring intermediate handling. The bar rotates continuously while the cutting blade performs the cut, and immediately afterward the bevelling tool applies the chamfer, maintaining continuous useful action and eliminating downtime between operations.
2Reliability
If bars are transferred between cutting and bevelling machines, then specialized equipment can be used for each operation, but handling complexity and temporary stacking requirements increase
Solution Approach 1:
The patent integrates both cutting and bevelling devices on a single machine platform. The cutting blade assembly and bevelling tool assembly are both mounted on the same machine, allowing bars to remain on the rotating mandrel throughout both operations without transfer, thus eliminating temporary stacking requirements and reducing handling complexity.
3Ease of manufacture
If a stationary turning tool is used for chamfering, then the tool structure is simple, but it is not effective at low rotation speeds
Solution Approach 1:
The patent employs a rotating bevelling tool that rotates in the opposite direction to the bar's rotation. This dynamic approach ensures that the cutting inserts on the bevelling tool maintain effective relative motion with the bar surface even at low rotation speeds, achieving proper chamfering without requiring high bar rotation speeds like traditional stationary turning tools.
Solution Approach 2:
Instead of using a stationary tool as in traditional lathe operations, the patent inverts the approach by making the bevelling tool itself rotate. The bevelling tool rotates in the opposite direction to the bar, creating the necessary relative motion for effective chamfering at low bar rotation speeds, thereby solving the limitation of stationary tools.
4Device complexity
If cutting and bevelling are performed sequentially on the same bar, then equipment simplicity is maintained, but processing time increases
Solution Approach 1:
The patent combines cutting and bevelling operations into a single integrated machine with both devices operating on the same bar simultaneously in sequence. The bar rotates on a mandrel, first undergoing cutting by the rotating blade, then immediately receiving bevelling from the chamfering tool, all without leaving the machine or stopping rotation, thus maintaining equipment simplicity while reducing processing time.
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
This solution reduces processing times, eliminates downtime between cutting and bevelling, and allows for flexible handling of bars of different diameters, while maintaining efficiency even at low rotation speeds, thus lowering construction and maintenance costs.
Implementation Method 1
the cutting and bevelling tools move in synchronized, opposing directions to minimize vibration
Data Source
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AI summary
It is disclosed a cutting machine for cutting bars or tubes comprising a base frame (1) on which a lying axis (X-X) of a bar is defined, and a cutting unit (5, 6, 7) provided with a cutting tool (7) apt to be perpendicularly moved closer to/further away from said lying axis (X-X) along a work plane (Z-Z), wherein said base frame (1) is provided with at least one through-mandrel (2, 3), which is coaxial on, said lying axis (X-X), provided with a clamping head in the proximity of a processing area which is crossed by said work plane (Z-Z), and said through-mandrel (2, 3) is rotatable with a rotation about said lying axis (X-X), wherein furthermore there is provided a bevelling unit (8), equipped with a rotating bevelling tool (10) mounted movable closer to/further away perpendicularly to said lying axis (X-X) along said work plane (Z-Z) by a movement along an arc of circle.