Electric Pipe Expander With Worm-Driven Precision Clamping
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Solution Overview
Problem
Existing electric pipe expanders have complex structures, leading to time and labor waste during positioning and clamping, with low positioning precision and inconsistent pipe socket processing quality.
Innovation Solution
An electric pipe expander with a simple structure, featuring a mandrel sliding cavity, a chuck body for clamping, and a guide screw rod with a transmission screw nut, utilizing a worm gear and worm mechanism to drive the mandrel and ensure high positioning precision and uniform pipe socket formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an electric pipe expander is used to save time and labor in pipe expanding processing, then productivity is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The device is divided into distinct functional modules: a handle assembly, a ratchet mechanism assembly, and a pipe expanding mechanism assembly. Each module performs a specific function and can be independently manufactured and assembled, reducing overall device complexity while maintaining automation benefits
Solution Approach 2:
The complex threaded rotary rod clamping mechanism is replaced by extracting the positioning function and implementing it through a simple positioning groove and positioning block structure. This removes unnecessary mechanical complexity while preserving the clamping and positioning functions
2Ease of operation
If a threaded rotary rod clamp is used for pipe positioning, then clamping function is achieved, but time and labor are wasted and positioning precision is low
Solution Approach 1:
The positioning groove is pre-formed in the handle assembly, and the positioning block is pre-equipped on the pipe expanding mechanism. This preliminary configuration eliminates the need for complex real-time adjustment during operation, enabling quick and accurate positioning without time-consuming manual intervention
Solution Approach 2:
The complex threaded rotary rod mechanical adjustment system is replaced with a simpler positioning groove and positioning block mechanism that achieves the same clamping and positioning functions with fewer moving parts and less operational time
3Weight of moving object
If manual pipe expander is used, then device size is small and weight is light, but time and labor are wasted and positioning precision is low
Solution Approach 1:
The positioning block acts as an intermediary element that fits into the positioning groove, providing precise mechanical positioning. This simple intermediary mechanism achieves high positioning precision without adding significant weight or complexity to the device
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
The solution achieves high positioning precision, reduces time and labor in pipe expanding, ensures uniform pipe socket shape, and extends the service life of the pipe expander, while also making it more convenient to use and carry.
Implementation Method 1
the elastic body decelerates the axial moving speed of the mandrel through self deformation
Implementation Method 2
The mandrel configured to push the pipe expanding cone to perform pipe expanding processing is driven through the worm gear and worm mechanism
Implementation Method 3
a guide screw rod provided with a transmission screw nut is disposed on the pipe expander body opposite to an opening of the elastic body accommodating cavity
Data Source
AI summary
An electric pipe expander and intelligent control circuit for the electric pipe expander are provided. The electric pipe expander includes a pipe expander body and a mandrel sliding cavity disposed on the pipe expander body. A chuck body capable of clamping a pipe to be processed is disposed at an opening end of the mandrel sliding cavity. A mandrel is slidingly connected in the mandrel sliding cavity, an outer side end of the mandrel is provided with an obliquely disposed pipe expanding cone, an inner side end of the mandrel is provided with an elastic body accommodating cavity. Flat keys are disposed on the mandrel, and an elastic body is clamped and disposed between the flat keys and a bottom surface of the elastic body accommodating cavity.