Modular Calibration Weight Base Module Segmentation
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Solution Overview
Problem
Existing calibration weights for balances are limited by their size and diversity, requiring separate designs for different load ranges and leading to increased production costs and spatial inefficiencies, as they need to match the upper limit of each load range to minimize errors in weighing results.
Innovation Solution
A modular calibration weight system with a base module that can be coupled and uncoupled from a calibration weight arm, featuring attachment areas for supplemental weights and positioning means to ensure accurate positioning, allowing the same design to be used across various balance types with different load ranges, and utilizing wear-resistant materials to prevent oxidation and material exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration weights are designed to match the upper limit of each load range, then measurement precision is improved, but device complexity and production costs increase due to requiring multiple different calibration weight designs
Solution Approach 1:
The calibration weight is divided into a base module and detachable supplemental weights. The base module contains the core calibration function, while supplemental weights can be attached or removed to adjust the total mass. This segmentation allows a single base module design to serve multiple load ranges by combining with different supplemental weight configurations, thereby reducing the need for multiple complete calibration weight designs while maintaining calibration accuracy for different balance capacities.
Solution Approach 2:
The base module is designed with universal attachment areas that can accommodate various supplemental weights. This universal design allows the same base module to function across different balance types and load ranges by simply changing the supplemental weight configuration, rather than creating dedicated calibration weights for each balance model. The positioning means ensure that regardless of which supplemental weights are attached, the calibration weight maintains accurate positioning on the calibration weight arm.
2Measurement precision
If separate calibration weight designs are created for different balance types, then measurement precision is improved, but manufacturing costs and production time increase
Solution Approach 1:
By segmenting the calibration weight into a standardized base module and interchangeable supplemental weights, the manufacturing process can mass-produce the base module once and then efficiently assemble different supplemental weight configurations for various balance types. This significantly increases production efficiency compared to manufacturing entirely separate calibration weights for each balance model, while still maintaining the precision required for each specific application.
Solution Approach 2:
Instead of changing the entire calibration weight design for different balance types, only the supplemental weight parameters (mass, shape, attachment configuration) are changed while the base module remains constant. This parameter change approach allows rapid adaptation to different balance specifications without retooling the entire manufacturing process, thereby improving productivity while preserving calibration accuracy.
3Measurement precision
If calibration weights are made larger to match higher load ranges, then measurement precision is improved, but volume and spatial requirements increase
Solution Approach 1:
The segmentation into base module and supplemental weights allows the calibration system to achieve high load range calibration without requiring a single large-volume weight. Instead, multiple smaller supplemental weights are attached to the base module, achieving the same total mass but with more compact overall volume and better spatial distribution, fitting more efficiently within the balance housing.
4Reliability
If wear-resistant materials are used to prevent oxidation and material exchange, then reliability is improved, but manufacturing costs increase
Solution Approach 1:
By segmenting the calibration weight into base module and supplemental weights, wear-resistant materials and surface treatments can be applied selectively to the positioning means and attachment areas where contact and wear occur, rather than treating the entire calibration weight. This targeted approach maintains reliability by protecting critical surfaces while reducing overall manufacturing costs compared to treating the entire weight structure.
Data Source
AI summary
A calibration weight 100 for a gravimetric measuring instrument includes a calibration weight base module 101 which is equipped with at least one attachment area 106. The calibration weight 100 further has at least one positioning means 104 and at least one transfer element 105. The attachment area 106 allows supplemental weights 102 to be built onto the calibration weight base module 101; the positioning means 104 serves to position the calibration weight 100 in relation to the calibration weight arm 20; and the transfer element 105 serves as the place through which the transfer mechanism lever 31 applies its force and effects a transfer.