Hub Fixture Positioning and MQL for Multi-Spec Machining
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Solution Overview
Problem
Current hub fixtures struggle with positioning accuracy and efficiency, particularly when machining multi-specification hubs, and traditional machining devices use inefficient flood lubrication methods, leading to environmental and health hazards, as well as low machining accuracy and increased costs.
Innovation Solution
An automobile hub fixture with a positioning apparatus and minimal quantity lubrication system, featuring a fixture body with clamping claws and a movable platform for self-positioning, and a machining device with a machine tool equipped with a minimal quantity lubrication apparatus, which uses a connecting rod mechanism and adjustable clamping claws to accommodate different hub sizes and specifications, and a loading and unloading system for continuous hub processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional hub fixture is used for multi-specification hub machining, then the fixture can be adjusted to accommodate different hub sizes, but the positioning accuracy cannot meet machining requirements and the adjustment process is time-consuming
Solution Approach 1:
The fixture employs adjustable clamping claws that can dynamically adapt to different hub sizes through radial movement along the fixed platform. The positioning apparatus includes a movable platform that can be positioned at different locations, enabling the fixture to accommodate various hub specifications while maintaining positioning accuracy through coordinated adjustment of clamping and positioning elements.
2Adaptability or versatility
If the fixture is adjusted constantly for different hub specifications, then adaptability is improved, but production efficiency decreases due to time-consuming adjustments
Solution Approach 1:
The positioning apparatus is prepared in advance with a movable platform that can be quickly repositioned for different hub sizes. The clamping claws are pre-configured with connecting rod mechanisms that enable rapid adjustment. This preliminary preparation of the adjustment mechanism allows for quick adaptation to different specifications without time-consuming manual adjustments during production.
3Manufacturing precision
If flood lubrication is used to remove heat and cuttings, then machining quality can be maintained, but large quantities of cutting fluid are consumed causing environmental harm and high costs
Solution Approach 1:
The patent extracts only the essential lubrication function needed for machining quality, eliminating the excessive cutting fluid application of flood lubrication. The minimal quantity lubrication system delivers precisely the amount of cutting fluid required at the cutting zone, removing the harmful excess while maintaining adequate cooling and lubrication for machining quality.
4Adaptability or versatility
If island-type machining with three machine tools is used, then flexibility is maintained, but machining accuracy is low due to same positioning reference for rough, semi-finishing, and finishing operations
Solution Approach 1:
The machining process is segmented into distinct rough machining, semi-finishing, and finishing operations, each with optimized positioning references. The fixture design incorporates positioning apparatus specifically configured for different machining stages, allowing each operation to use appropriate positioning strategies rather than a single uniform reference system, thereby improving overall machining accuracy while maintaining process flexibility.
Data Source
AI summary
An automobile hub fixture includes a fixture body and a positioning apparatus. The fixture body includes a fixed platform and a plurality of clamping claws arranged at intervals in a circumferential direction of the fixed platform. The clamping claws are configured to clamp an outer rim of a hub. The plurality of clamping claws are connected to a driving member by using a linkage, and the driving member drives the clamping claws to radially move along the fixed platform. The positioning apparatus includes a movable platform slidably connected to the clamping claws. A positioning module configured to position an inner rim or the outer rim of the hub is mounted to the movable platform. The machining device includes a fixture, a machine tool, and a minimal quantity lubrication apparatus. The production line includes a machining device, a loading system, a loading and unloading manipulator, and a catching table.