Drilling and Milling Machine with Transomless Door
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Solution Overview
Problem
Existing machine tools, such as drilling and milling machines, face challenges in maintaining high precision and protecting drive mechanisms from machining residues, especially during 5-axis machining, which leads to complex and costly designs due to the risk of deformation and residue contamination.
Innovation Solution
The integration of an automatic pallet changer and tool changer with a transomless front door and a concertina roof allows for easy assembly, rapid exchange of elements, and unrestricted access to the workpiece, enabling efficient machining of bulky components with high-power motor spindles and maintaining precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the workpiece table is made pivotable for 5-axis machining, then the machining capability is improved, but the design complexity and cost increase due to the need for complex sealing measures to protect drive apparatus from machining residues
Solution Approach 1:
The drive apparatus is extracted from the workpiece table and relocated to the machine bed. This separation eliminates the need for complex sealing measures on the pivotable workpiece table, as the drive means are now protected in the stationary machine bed away from machining residues
Solution Approach 2:
A linear motor is introduced as an intermediary drive mechanism that can be positioned in the machine bed and magnetically couple with the workpiece table through a non-contact arrangement, eliminating mechanical connections that would require sealing
2Reliability
If complex sealing measures are implemented to protect drive means from machining residues, then the reliability is improved, but the device complexity and cost increase
Solution Approach 1:
The drive apparatus is extracted from the workpiece table and relocated to the machine bed. This separation eliminates the need for complex sealing measures on the pivotable workpiece table, as the drive means are now protected in the stationary machine bed away from machining residues
Solution Approach 2:
The machine bed structure itself serves as the protective enclosure for the drive means, utilizing the existing housing to protect sensitive components from machining residues without requiring additional complex sealing systems
3Manufacturing precision
If the workpiece table has a linear motional path with compensation for deformation, then the machining precision is improved, but the movement apparatus becomes very complex and expensive
Solution Approach 1:
Mechanical compensation mechanisms are replaced with a linear motor system that provides direct, precise control of the workpiece table motion through electromagnetic fields, eliminating the need for complex mechanical compensation apparatus while maintaining high precision
Solution Approach 2:
The drive mechanism transitions from mechanical to electromagnetic operation, allowing for precise control of motion parameters through electronic regulation of the linear motor, which simplifies the overall movement apparatus while maintaining or improving precision
Data Source
AI summary
A machine tool (1, 1′), in particular a drilling and milling machine, comprising a housing (20) having a machine bed (2), together with side walls (3, 4) and doors (5, 6, 7), comprising a fixed, pivotable or rotatable work table (8, 9), and comprising a slide (10), transportable in the y direction, for the reception of a spindle head (11), transportable in the x-z direction, for the reception of tools (12), wherein the front door (5), for the enlargement of the working and loading area (21) in the upward direction, is of transomless configuration, the roof region (13) of the machine (1, 1′) has an automatically operable cover (16), the rear region (22) of the machine (1, 1′) has an integrable automatic pallet changer (14), and the machine (1, 1′) is assigned an automatic tool changer (15).