Pipe Cutter Threaded Assembly for Stable Wheel Alignment
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Solution Overview
Problem
Conventional pipe cutting devices suffer from misalignment of cutting element and spindle part, leading to increased structural space and instability, and require precise shaft positioning for accurate engagement, which is compromised by errors or allowances.
Innovation Solution
A pipe cutting device with a body unit, roller units, sliding unit, threaded rod unit, and control unit, where the sliding unit is moved in a receiving recess, and the control unit engages or disengages screwing portions linearly, allowing for exact assembly and stable support through perpendicular axes and dual restriction mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cutting element and spindle part are arranged in a staggered manner, then the structural space is increased, but the stability and support are reduced
Solution Approach 1:
The patent inverts the conventional staggered arrangement by aligning the cutting element and spindle part on the same axis. This inversion resolves the contradiction by eliminating the need for staggered positioning, thereby reducing structural space while improving stability through direct alignment and force transmission.
Solution Approach 2:
The patent introduces asymmetric positioning of the cutting element relative to the spindle part, where the cutting element is positioned offset from the centerline of the spindle part. This asymmetric arrangement allows the cutting element to be supported by the spindle part while maintaining stability, resolving the contradiction between space occupation and stability.
2Ease of manufacture
If the shaft position of the engagement element has errors or allowances, then the assembly is easier to manufacture, but the engagement accuracy is reduced
Solution Approach 1:
The patent employs a self-aligning mechanism where the engagement element automatically adjusts its position to achieve accurate engagement with the receiving part. The seesaw structure and toothed section design allow the engagement element to self-correct positioning errors, eliminating the need for high-precision shaft positioning while maintaining engagement accuracy.
Solution Approach 2:
The patent changes the geometric parameters of the engagement element, specifically designing the toothed section with a specific angle and shape that allows for automatic alignment. By optimizing the angular parameters of the toothed section, the system accommodates manufacturing tolerances while ensuring accurate engagement, resolving the contradiction between ease of manufacture and engagement precision.
3Productivity
If the cutting element is subjected to force, then the cutting function is activated, but the torque on the engagement element teeth increases
Solution Approach 1:
The patent extracts the force transmission function from the engagement element teeth by introducing a separate force transmission path through the spindle part. The cutting element is directly supported by the spindle part, which handles the torque transmission, while the engagement element focuses solely on positioning and engagement. This separation resolves the contradiction by removing the torque burden from the engagement element teeth.
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
Ensures precise and stable assembly of components, allowing for efficient force transmission and adjustment of cutting wheel distance, enhancing structural stability and ease of assembly.
Implementation Method 1
an elastic member (53). The control member (52) is assembled with the press member (51). The control member (52) is provided with a second screwing portion (521) engaging the first screwing portion (422)
Implementation Method 2
The threaded rod unit (40) includes a rotation member (41) and a threaded rod (42). The threaded rod (42) is provided with a second pivoting section (421) and a first screwing portion (422)
Implementation Method 3
two roller units (20). The two roller units (20) are pivotally mounted in the second receiving recess (114)
Data Source
AI summary
A pipe cutting device includes a body unit, two roller units, a sliding unit, a threaded rod unit, and a control unit. The body unit includes two bodies each provided with a first receiving recess, a first pivoting section, and a second receiving recess. The sliding unit includes a slide and a cutting wheel. The slide is provided with a fourth receiving recess, a first pivot portion, a fifth receiving recess, and a sixth receiving recess. The threaded rod unit includes a rotation member and a threaded rod. The threaded rod is provided with a second pivoting section and a first screwing portion. The control unit includes a press member, a control member, and an elastic member. The control member is assembled with the press member and provided with a second screwing portion engaging the first screwing portion.