Inner Roller Feed Mechanism With Cam Drive for Wide Radial Adjustment

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Solution Overview

Problem

Current counter-roller spinning technologies face limitations in the flexibility and rigidity of inner roller feeding devices, particularly in large-size baseplates, leading to high costs, long manufacturing cycles, and restricted adjustment ranges, which hinder the production of cylindrical parts with varying diameters and wall thicknesses.

Innovation Solution

An inner roller feeding device for counter-roller driving power spinning equipment, featuring a cam-driven worm gear mechanism with a servo motor and feed screw, enhancing the adjustment range and rigidity by using multiple inner roller columns, shafts, and a cam mounting cylinder, connected to a baseplate for improved positioning precision and stress distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a feed screw drives a conical wedge to adjust the radial feed of the inner roller, then the inner roller position can be adjusted, but the adjustment range is limited and the flexibility is poor

Engineering Contradiction:

Improveadjustment range of inner rollerVSAvoidstructure complexity of feeding device

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent transforms the static cantilever structure into a dynamic system where the inner roller frame can rotate around the inner roller shaft. This rotational capability allows the inner roller to reach different positions and process workpieces with various diameters, significantly improving the adjustment range and flexibility of the feeding device.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention adds a rotational dimension to the inner roller frame, enabling it to move not only radially but also angularly around the inner roller shaft. This dimensional change allows the system to process workpieces with different diameters and configurations, greatly enhancing adaptability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Strength

If the inner roller frame and inner roller shaft are cantilever structures, then the structure is simple, but the rigidity is poor

Engineering Contradiction:

Improverigidity of inner roller structureVSAvoidstructure complexity of inner roller support

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The patent divides the inner roller support system into multiple segments: the inner roller shaft, the inner roller frame, and the connection to the spinning wheel. This segmentation allows each component to be optimized independently, with the shaft providing rotational support and the frame providing structural stability, thereby improving overall rigidity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention merges the support functions of the inner roller shaft and frame into an integrated system where the shaft serves as both a rotational axis and a structural support. This combination eliminates the need for separate support structures, improving rigidity while controlling complexity.

Inventive Principle:

Principle #5Merging (Combining)

3Measurement precision

If the position of the inner roller is adjusted using a lead screw and wedge mechanism, then the inner roller can be positioned, but the positioning precision and flexibility are insufficient

Engineering Contradiction:

Improvepositioning precision of inner rollerVSAvoidflexibility of position adjustment

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the traditional lead screw and wedge mechanical positioning system with a direct rotational positioning mechanism. The inner roller frame rotates around the inner roller shaft, allowing for more precise and flexible positioning through angular adjustment rather than linear mechanical transmission.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 provides a compact, high-precision inner roller mechanism with a large adjustment range, improving the rigidity and universality of the inner roller feeding device, enabling flexible processing of cylindrical parts with different diameters and wall thicknesses, thus overcoming the limitations of existing technologies.

Implementation Method 1

a cam-driven worm gear mechanism with a servo motor and feed screw

Methodology Applied

Scientific EffectCam mechanism: Cam

Implementation Method 2

cam-driven worm gear mechanism

Methodology Applied

Scientific EffectWorm gear drive: Worm Drive

Implementation Method 3

feed screw connected to a baseplate for improved positioning precision

Methodology Applied

Scientific EffectServo motor: Linear Motor

Data Source

PatentUS11306799B2Inner roller feeding device for a baseplate of counter-roller driving power spinning equipment

Publication Date: 2022.04.19 XI AN JIAOTONG UNIV

AI summary

An inner roller feeding device for a baseplate of a counter-roller driving power spinning equipment includes an inner roller column, an inner roller top plate, an inner roller upper plate, an inner roller lower plate, a cam, a cam mounting cylinder, inner rollers, inner roller shafts, a feed screw, a servo motor and a baseplate. According to the inner roller feeding device, a brake motor serves as a power source, the inner roller is driven by the cam through a worm gear drive to feed along a radial direction of a workpiece, such that an inner roller mechanism is small in size, large in adjustment range and high in positioning precision.