Dual-Spindle Machine Tool Layout for Compact Rigid Machining
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Solution Overview
Problem
Existing machine tools are not rigid and compact enough to efficiently machine complex workpieces, and they often lack the capability to finish workpieces within the machining center.
Innovation Solution
A machine tool design featuring two vertically aligned tool spindles with a common machine frame, allowing for short transport distances and direct transfer of workpieces between devices, along with a double gantry structure that minimizes tilting moments and enables precise machining. The tool spindles move in two directions, while devices can pivot, facilitating quick and complete machining of complex workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a common machine frame with two vertically aligned tool spindles is used, then the machine tool becomes more compact and rigid with shorter transport distances, but the structural complexity increases
Solution Approach 1:
The patent merges two machine frames into a single common machine frame that supports both tool spindles vertically aligned. This consolidation reduces the overall machine footprint and improves rigidity while maintaining the functionality of two independent working areas through shared structural components.
Solution Approach 2:
The patent transitions from horizontal arrangement of machine frames to vertical alignment of tool spindles within a common frame. This dimensional change from horizontal to vertical configuration achieves compactness without sacrificing the dual-working-area capability.
2Productivity
If tool spindles are vertically aligned with short travel distances, then machining speed increases, but the capability to machine complex workpieces may be limited
Solution Approach 1:
The patent makes each tool spindle capable of performing multiple functions by enabling tool changes during the machining process. The spindles can machine both simple and complex workpieces, and can switch between different tools to handle varying workpiece requirements, achieving universality without compromising speed.
Solution Approach 2:
The patent introduces dynamic tool changing capability that allows the system to adapt its tooling during operation. This dynamic reconfiguration enables the high-speed spindles to handle complex multi-operation workpieces by swapping tools mid-process, combining speed with versatility.
3Device complexity
If a common tool magazine is used for both spindles, then the structure is simplified, but tool access time increases
Solution Approach 1:
The patent segments the tool magazine into two separate magazines, one dedicated to each tool spindle. This segmentation allows each spindle to access its own tool supply independently, eliminating wait times for tool changes and maintaining high productivity while simplifying the control logic for tool management.
Data Source
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AI summary
The invention relates to a machine tool (10) which is provided with two vertically aligned tool spindles (22, 25) which are equipped to receive tools (23, 26) and which can be moved vertically in a first direction (33) and horizontally in a second direction (34) that is orthogonal to the first direction (33). The machine tool (10) is additionally provided with two devices (29, 31) for clamping workpieces (27, 28) to be machined. At least one of the devices (29, 31) can be moved horizontally in a third direction (35) that is orthogonal to the first and the second direction (33, 34). The two tool spindles (22, 25) and the two devices (29, 31) are mounted on a common machine frame (11) with a common working chamber (32), wherein the two tool spindles (22, 25) can be moved parallel to each other in the second direction (34) and face each other.