Bi-Rotary Machining Head for Faster Multi-Axis Panel Machining
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Solution Overview
Problem
Current machine tools require expensive and wear-prone tool heads for multi-axis machining, limiting rotation speed and increasing production costs due to the need for multiple tools and complex tool change procedures, especially in five-axis machines where controlling the rotation of heads is complex and inflexible.
Innovation Solution
A machine tool with a bi-rotating head capable of rotating around two axes and translating along two perpendicular directions, allowing for flexible machining configurations without the need for additional tool heads, and a gripper system that enables efficient drilling on inclined surfaces without the limitations of traditional tool change mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional tool heads with mechanical transmissions are used for multi-axis machining, then the machine can perform multiple machining operations, but the rotation speed is limited and production costs increase
Solution Approach 1:
The patent removes the traditional tool head with mechanical transmissions from the system and replaces it with a direct-drive electrospindle. This extraction of the problematic component eliminates the speed limitation while maintaining multi-axis machining capability through software-controlled toolpath compensation
Solution Approach 2:
The patent makes the electrospindle universal by enabling it to perform multiple machining operations (drilling, milling, countersinking) at high speed without requiring different tool heads. The multi-functionality is achieved through programmable toolpaths that compensate for the fixed spindle orientation
2Adaptability or versatility
If multiple tool heads are equipped for different machining directions, then various machining operations can be performed, but the machine complexity and production costs increase
Solution Approach 1:
The patent uses a single electrospindle to perform all machining operations that would traditionally require multiple specialized tool heads. The electrospindle is programmed to execute different toolpaths for drilling, milling, countersinking, and other operations, eliminating the need for physical tool head changes
Solution Approach 2:
The patent merges the functions of multiple tool heads into a single electrospindle system. By combining all machining capabilities into one high-speed spindle and using software control, the system reduces complexity while maintaining operational versatility
3Ease of operation
If traditional tool heads with mechanical transmissions are used, then tool change procedures can be performed, but the machining speed is reduced and performance is limited
Solution Approach 1:
The patent removes the mechanical transmission system from the tool head, eliminating the bottleneck that limited machining speed. The direct-drive electrospindle operates at full speed without the constraints of mechanical gears and transmissions
Solution Approach 2:
The patent pre-calculates and programs all toolpath compensations and positioning movements before machining begins. This preliminary action allows the electrospindle to maintain high speed throughout the operation without needing to slow down for mechanical adjustments or tool changes
4Adaptability or versatility
If five-axis machine tools with rotating heads are used, then complex work configurations can be achieved, but the control complexity and workspace requirements increase
Solution Approach 1:
The patent replaces the mechanical rotation system with a software-based solution. Instead of physically rotating the electrospindle on multiple axes, the system uses programmable toolpaths and coordinate transformations to achieve the same effect, dramatically simplifying the control system
Solution Approach 2:
Instead of rotating the tool to achieve different work configurations, the patent inverts the approach by keeping the tool fixed and rotating the workpiece or the coordinate system through software. This inversion eliminates the complexity of controlling multi-axis spindle rotation while maintaining the ability to machine complex configurations
Data Source
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AI summary
The present invention concerns a machine (M) for machining workpieces (P), such as wood, glass, fiberglass, plastic, metal, ceramic or similar panels, comprising: a moving element (2) for moving a piece (P) along a substantially horizontal advancement direction (X); a group (3) for working said workpiece (P), in its turn comprising a bi-rotary machining head (31), wherein said working group (3) is able to rotate around a first substantially horizontal axis of rotation and parallel to a first translational direction (Y), which is perpendicular to said advancement direction (X), and wherein said machining group (3) is able to rotate around a second rotation axis, parallel to a second translation direction (Z), which is substantially perpendicular to said feed direction (X) and to said first translation direction (Y); a first mechanical member for moving said machining group (3) along said first translational direction (Y); and a second mechanical member for moving said machining group (3) along said second translation direction (Z). The present invention also concerns a method of operation of said machine (M).