Internal Thread Repair Assembly for Worn Nut Remanufacturing
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Solution Overview
Problem
Internal threads in nuts used in engineering machinery often wear out due to long-term use, leading to thread failure and resulting in resource waste as worn nuts are typically scrapped rather than repaired.
Innovation Solution
An additive repair device for internal threads, comprising a moving assembly, rotating assembly, speed regulation assembly, gear assembly, and additive assembly, which allows for linear movement and rotation of the workpiece, enabling surfacing welding to restore the internal threads, thus extending the life of the nuts and preventing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If worn nuts are scrapped instead of repaired, then production time is reduced and operational reliability is maintained, but resource waste increases and manufacturing costs rise
Solution Approach 1:
The patent applies the discarding and recovering principle by enabling the recovery and restoration of worn nuts through additive repair. Instead of discarding worn nuts, the device deposits new material to restore the internal threads, allowing the nuts to be reused and thereby reducing resource waste while maintaining reliability
Solution Approach 2:
The patent applies parameter changes by modifying the physical state and dimensions of the nut through additive material deposition. The repair process changes the volume, shape, and surface characteristics of the worn areas to restore functional dimensions and thread geometry, enabling the nut to meet original performance parameters
2Adaptability or versatility
If a repair device is designed to accommodate multiple nut specifications, then adaptability increases, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a repair device that can handle multiple nut specifications using the same core mechanism. The device achieves multi-functionality through adjustable components and flexible positioning systems that allow it to adapt to different nut sizes and thread configurations without requiring completely separate repair systems for each specification
Solution Approach 2:
The patent applies dynamics by incorporating adjustable and reconfigurable elements in the device structure. The positioning mechanisms, clamping systems, and deposition head locations can be dynamically adjusted to accommodate different nut specifications, allowing the device to transform its configuration rather than requiring multiple fixed setups
Data Source
AI summary
An additive repair device for internal threads is provided. The device includes a moving assembly, a rotating assembly, a speed regulation assembly, a gear assembly, an additive assembly, and a connecting assembly. The moving assembly includes a drive part and a linear movement mechanism. The additive assembly is connected to the linear movement mechanism through the connecting assembly. One end, which is far away from the drive part, of the linear movement mechanism is connected to an input end of the speed regulation assembly through the gear assembly. The rotating assembly includes a clutch mechanism and a clamping mechanism. The clutch mechanism includes a clutch outer gear and a clutch inner gear. The clutch outer gear is arranged at an output end of the speed regulation assembly. The clamping mechanism is fixed to one end, which is far away from the speed regulation assembly, of the clutch inner gear.