Deep Rolling Machine Axial Guide Roller for Crankshaft Stability
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Solution Overview
Problem
Deep-rolling machines with scissor-like designs for crankshafts suffer from instability along the axis of rotation, leading to axial vibrations during machining, which deteriorate the work result due to the relatively low stability of deep-rolling devices.
Innovation Solution
Incorporating an axial guide roller attached to the support roller head that engages between oil collars of the crankshaft's bearing journal, and optionally using spacers between scissor arms to stabilize the deep-rolling devices, ensuring they are secured in the axial direction and reducing vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If deep-rolling devices with scissor-like design are used, then the deep-rolling tool can be positioned at a large distance from the attachment point improving flexibility, but the stability of the deep-rolling device in the axial direction deteriorates leading to vibrations
Solution Approach 1:
An axial guide roller is introduced as an intermediary component between the deep-rolling device and the crankshaft. This roller engages with the oil collars of the bearing journal to provide axial guidance and stabilization, allowing the scissor-like deep-rolling device to maintain its flexible design while eliminating harmful axial vibrations through the mediating guidance function
Solution Approach 2:
The axial guide roller acts as a counterbalancing element that opposes and neutralizes the unstable axial movements and vibrations inherent in the scissor-like deep-rolling device design, providing stabilizing reaction forces through engagement with the crankshaft oil collars
2Stability of the object's composition
If axial guide roller is attached to support roller head, then stability of deep-rolling device is improved, but forces are introduced into the oil collar of the crankshaft
Solution Approach 1:
The axial guidance function is extracted from the deep-rolling head and transferred to a separate axial guide roller mounted on the support roller head. This separation allows the deep-rolling function to remain focused on radial rolling while the axial guidance handles stabilization, distributing forces more favorably and reducing harmful axial loads on the oil collar
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 axial guide roller and spacers effectively stabilize the deep-rolling devices, reducing axial vibrations and improving the machining process by directing forces into the crankshaft, thereby enhancing the stability and effectiveness of the deep-rolling operation.
Implementation Method 1
an axial guide roller, which is fastened to the support roller head and, when the deep-rolling tool is closed, engages between the associated oil collars of a bearing journal of the crankshaft
Data Source
AI summary
The invention relates to a deep rolling machine (2) for crankshafts (5) comprising a number of deep rolling units (3) in a scissors-like construction, which are pivotably fastened to the deep rolling machine (2) next to one another in the direction of the axis of rotation (4) of the crankshaft (5) with lateral spacings (6) in each case, wherein some deep rolling units (3) are provided for the deep rolling of main bearing journals (14) and other deep rolling units (3) are provided for the deep rolling of crankpin journals of the crankshaft (5), and the deep rolling units (3) respectively carry at the outer ends of their two scissor arms a deep rolling roller head (11) and a supporting roller head (9), which together form a deep rolling tool (10), wherein the deep rolling tool (10) has a great distance along the scissor arms from the associated fastening of the deep rolling unit (3) to the deep rolling machine (2) in the ratio of the width (7) of the scissor arms to their length. At least one of the deep rolling units provided for the deep rolling of the main bearing journals (14) or the crankpin journals has a device (8) which, in the working position of the deep rolling unit (3), acts on the crankshaft (5) and stabilizes the deep rolling unit (3) in the direction of the axis of rotation (4) of the crankshaft (5).