Vibration Control Equipment With Mold Cavity Positioning
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Solution Overview
Problem
Conventional vibration control equipment for machines has complex assembly processes and increased production costs due to the need for press fitting damping rubbers into cylindrical holes, which complicates the fixing of mold cavity portions in line with the vibrating direction.
Innovation Solution
The vibration control equipment features damping rubbers with outer tubes and inner tubes, flange portions, and rubber elastic bodies, where the outer tubes are inserted into fixing holes without pressing, allowing for easy alignment of mold cavity portions with the vibrating direction using positioning portions, and are secured by plate members and fastening members to ensure support rigidity and vibration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If damping rubbers are pressed into cylindrical holes of the bracket member to fix the circumferential direction, then the mold cavity portions can be positioned in line with the vibrating direction, but the assembling work becomes complicated and production cost increases
Solution Approach 1:
The patent applies preliminary action by pre-forming the mold cavity portions in the damping rubbers at specific orientations before assembly. The damping rubbers are manufactured with mold cavity portions already positioned to align with the vibrating direction, eliminating the need for complex press-fitting operations during assembly. This allows the damping rubbers to be simply inserted into the bracket member holes without requiring jigs or complex positioning procedures.
2Manufacturing precision
If damping rubbers are pressed into cylindrical holes of the bracket member to fix the circumferential direction, then the mold cavity portions can be positioned in line with the vibrating direction, but production cost increases due to requirement of press fitting jigs
Solution Approach 1:
The patent applies preliminary action by pre-forming the mold cavity portions in the damping rubbers at specific orientations before assembly. The damping rubbers are manufactured with mold cavity portions already positioned to align with the vibrating direction, eliminating the need for complex press-fitting operations during assembly. This allows the damping rubbers to be simply inserted into the bracket member holes without requiring jigs or complex positioning procedures.
3Reliability
If the support rigidity of damping rubbers is lowered to enhance vibration-resistance properties, then vibration transmission is reduced, but the vibration generating body may interfere with surrounding objects
Solution Approach 1:
The patent applies local quality by creating mold cavity portions at specific locations within the damping rubber structure. These cavities are positioned to align with the vibrating direction, selectively reducing rigidity where needed for vibration damping while maintaining structural integrity and support rigidity in other directions. This localized modification allows the damping rubber to have different mechanical properties in different directions, achieving both vibration resistance and adequate support.
Solution Approach 2:
The patent applies asymmetry by positioning the mold cavity portions asymmetrically within the damping rubber structure, specifically aligning them with the vibrating direction. This asymmetric placement creates directional differences in rigidity, making the damping rubber softer in the vibration direction for better damping performance while maintaining sufficient support rigidity in perpendicular directions to prevent interference with surrounding objects.
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 configuration simplifies assembly, reduces production costs, and enhances vibration resistance by aligning mold cavity portions with the vibrating direction, improving the damping rubbers' performance while maintaining support rigidity.
Implementation Method 1
a rubber elastic body for connecting the outer tube and the inner tube
Implementation Method 2
the rubber elastic bodies are axially compressed through the pair of plate members by firmly fastening the fastening member
Data Source
AI summary
In a vibration control equipment 1 constituted by inserting an outer tube 20 of pair of damping rubbers 2A, 2B into an opening 30 of a bracket member 3, clamping the pair of damping rubbers 2A, 2B by means of plate members 4A, 4B, tightening a fastening member 5 for coupling the plate members 4A, 4B, and then compressing the rubber elastic bodies 22 of the damping rubbers 2A, 2B in the axial direction, the outside diameter of the outer tube 20 before tightening the fastening member 5 is smaller than the inside diameter of the fixing hole 30, the rubber elastic bodies 22 are compression deformed by tightening the fastening member 5 and thus a bracket member 3 is clamped by means of upper and lower flange portions 23, at least one of the rubber elastic bodies 22 is provided with mold cavity portions 26A, 26B and at least one of the pair of outer tubes 20 is provided with a positioning portion 24 for determining the circumferential position of the pair of damping rubbers 2A, 2B relative to the bracket member 3. According to the present invention, assembling work is facilitated by arranging the mold cavity portions in accordance with the direction of vibration and the production cost can be reduced.