Mirror Milling Assembly for Thin-Walled Spherical Part Precision
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Solution Overview
Problem
Machining large-scale rotary spherical thin-walled parts poses challenges due to their large size, low rigidity, and complex feature profiles, leading to operational complexity, quality inconsistency, and precision issues, as well as resource conflicts and deformation during machining.
Innovation Solution
The mirror milling machining equipment features an annular base with a rotary table, a machining positioning assembly, and a support positioning assembly, including multiple movable platforms and drivers, allowing for precise positioning and rotation of the machining device and support member to maintain precision and prevent deformation, along with a control method that enables efficient machining of these parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large-scale special machine tool is used for machining large-scale rotary spherical thin-walled parts, then machining capability is provided, but resource conflicts occur and development progress is affected
Solution Approach 1:
The patent segments the machining system into modular components: a rotary table for workpiece positioning, a machining positioning assembly with multiple movable platforms (radial, pivotal, oblique), and a support positioning assembly. This segmentation allows the system to be configured for different machining tasks without requiring a complete dedicated machine tool, thereby resolving resource conflicts while maintaining machining capability.
Solution Approach 2:
The machining positioning assembly and support positioning assembly are designed with multi-functional movable platforms that can perform both machining operations and support functions. The radial movable platform, pivotal movable platform, and oblique movable platform can be configured for different operations, making the system universally applicable to various large-scale rotary spherical thin-walled parts, thus improving resource utilization.
2Ease of manufacture
If traditional machining methods are used on thin-walled parts, then machining operations can be performed, but the workpiece deforms during machining
Solution Approach 1:
The patent introduces a support positioning assembly as an intermediary between the workpiece and the machining system. This assembly includes a support base, support oblique movable platform, and support parallel positioner that provide continuous support to the thin-walled workpiece during machining, preventing deformation while allowing machining operations to proceed.
Solution Approach 2:
The support positioning assembly is configured to counteract the deforming forces before they can cause significant damage. By positioning support members at critical locations on the workpiece and providing preemptive support during the machining process, the system prevents the thin-walled structure from deforming under cutting forces.
3Manufacturing precision
If multiple positioning and support components are added to prevent deformation, then machining precision is maintained, but device complexity increases
Solution Approach 1:
The patent merges the machining positioning functions and support positioning functions into an integrated system. The machining positioning assembly and support positioning assembly share common structural elements and coordinate their movements, reducing the overall complexity compared to having completely separate systems. The radial, pivotal, and oblique movable platforms serve both machining and support functions in coordination.
Solution Approach 2:
The patent introduces oblique movable platforms that operate in three-dimensional space, adding a new dimension to the positioning and support system. This spatial arrangement allows multiple positioning and support functions to be achieved without increasing planar complexity, as the oblique platforms utilize vertical and angular dimensions for their operations.
Data Source
AI summary
Provided are a mirror milling machining equipment and a method for large-scale rotary spherical thin-walled parts. The equipment includes an annular base (100), an annular rotary table (200), a machining positioning assembly (300), a machining device (400), a support positioning assembly (500), and a support member (600).