Multi-Station Nut Screwing Assembly With Shared Gear Drive
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Solution Overview
Problem
Conventional processes for manufacturing sealing nuts are time-consuming and inefficient as they can only screw one nut with one bolt at a time, lacking the ability to simultaneously screw multiple nuts and bolts.
Innovation Solution
An automatic nut screwing device featuring a positioning mold plate, screw shaft, driving gear elements, transmission screwing elements with torque limiters, and a nut socket placing element that allows for simultaneous screwing of multiple nuts and bolts in a single step, utilizing a pneumatic or electric driver to rotate the screw shaft and engage the transmission screw gear units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional process is used to screw one nut with one bolt at a time, then the screwing operation is simple and reliable, but the production efficiency is low and the manufacturing time is long
Solution Approach 1:
The device is divided into multiple independent screwing units, each capable of screwing one nut with one bolt simultaneously. Each unit includes a positioning hole, transmission screwing element, and driving gear element, allowing parallel operation of multiple screwing operations to improve productivity while maintaining operational simplicity
Solution Approach 2:
Multiple screwing operations are merged into a single device structure. The positioning mold plate integrates multiple positioning holes and the driving mechanism combines multiple driving gear elements share a common drive shaft, enabling simultaneous screwing of multiple nuts and bolts in one operation cycle
2Loss of time
If multiple nuts and bolts are screwed simultaneously in one step, then the manufacturing time is shortened and productivity is improved, but the device structure becomes more complex
Solution Approach 1:
The device uses multiple independent transmission screwing elements, each with its own bolt head, bolt body, and transmission screw gear unit. These segmented units can operate independently and simultaneously, reducing manufacturing time while keeping each individual unit's structure relatively simple
Solution Approach 2:
The driving gear elements and transmission screwing elements are designed as universal components that can be replicated multiple times. Each unit performs the same screwing function, allowing the device to handle multiple screwing operations with standardized components rather than complex customized mechanisms
3Reliability
If a torque limiter is provided in the transmission screw gear unit, then the reliability of the screwing operation is improved by preventing over-tightening, but the device complexity increases
Solution Approach 1:
The torque limiter is integrated into the transmission screw gear unit and automatically limits the torque applied during screwing operations. When the predetermined torque is reached, the torque limiter automatically releases the force, preventing over-tightening without requiring external control systems or complex monitoring mechanisms
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables the simultaneous screwing of a large number of nuts and bolts, significantly increasing productivity and improving production efficiency by allowing multiple nuts and bolts to be secured in a single operation.
Implementation Method 1
the transmission screw gear unit being provided to engage to an upper out surface of the bolt head... the transmission screw gear unit being engaged with the driving gears such that the transmission screw gear unit is driven to rotate by the shaft engaging portion
Implementation Method 2
a screw thread being provided on an out surface of the bolt body... the screw body are rotated to screw with the nut
Data Source
AI summary
An automatic nut screwing device includes a positioning mold plate, a screw shaft, driving gear elements having driving gears, and transmission screwing elements having transmission screw gear units, bolt heads and bolt bodies. The transmission screw gear unit engages an upper out surface of the bolt head. The bolt head of each transmission screw element is fixed with the positioning mold plate. The shaft engaging portion engages with the transmission screw gear unit. The transmission screw gear unit engages with the driving gears such that the transmission screw gear unit is driven to rotate by the shaft engaging portion. A nut socket placing element has nut sockets when the screw shaft is axially rotated to enable the shaft engaging portion of the screw shaft to drive the transmission screw elements, thereby successively rotating elements that result in screw body being rotated to screw with the nut.