Calibration Adapter for Drilling Resistance Measurement
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Solution Overview
Problem
Existing drilling resistance measuring devices require complex calibration processes, making it difficult to obtain reproducible and precise measurements across various locations and materials.
Innovation Solution
A calibration adapter with a main body and coupling device for attaching to the drilling resistance measuring device, featuring a drilling needle passage and receiving space for a test body, allowing for simple and flexible calibration by recording drilling resistance signals from a test body before measuring the object, enabling precise parameter calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed using existing methods (gravimetric comparison or complex reference measurements), then measurement precision is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent introduces a calibration adapter as an intermediary component that attaches to the drilling resistance measuring device. This adapter contains a receiving space for a test body with known properties, serving as a mediator between the measurement device and the object being measured. The adapter simplifies calibration by providing a standardized interface and pre-positioned test body, eliminating complex setup procedures while maintaining measurement precision.
Solution Approach 2:
The calibration adapter is pre-configured with a receiving space designed to hold a test body of specific dimensions and material properties. The drilling needle passage is pre-aligned with the receiving space to ensure proper positioning. This preliminary preparation of the calibration apparatus eliminates the need for complex calibration procedures during actual use, as the test body is already positioned and ready for measurement.
2Measurement precision
If calibration is performed at centralized service locations, then measurement precision is improved, but adaptability and ease of operation deteriorate
Solution Approach 1:
The calibration system is segmented into a portable calibration adapter that can be detached from the measuring device and a separate test body. This segmentation allows the calibration components to be transported and used at various locations independent of centralized service centers. The adapter can be attached to the measuring device at the measurement site, enabling flexible calibration while maintaining precision.
Solution Approach 2:
The calibration adapter is designed to be self-contained with all necessary calibration components (receiving space, alignment features) integrated into a single unit. Users can perform calibration themselves by simply attaching the adapter with the test body to the measuring device, eliminating the need for specialized service center equipment or procedures. This self-service capability enables calibration at any location while maintaining measurement accuracy.
Data Source
AI summary
The present invention provides a calibration adapter (1) for drilling resistance measuring devices (10) which have at least one drilling needle receptacle which is coupled to a drive, a drilling needle (15), a guide sleeve (12) with a drilling needle outlet opening and an apparatus for drilling resistance detection and output. The invention further provides a calibration apparatus and a drilling resistance measuring apparatus, and also a method for calibrated drilling resistance measurement. The calibration adapter (1) has a main body (3) which has a coupling apparatus (5) in order to be releasably fastened to the drilling resistance measuring device (10) upstream of the drilling needle outlet opening and a drilling needle passage channel (33) which extends through the main body (3) and which is designed in such a way that it is aligned with the drilling needle outlet opening in a fastening arrangement of the calibration adapter (1) to the drilling resistance measuring device (10). The main body (3) further has at least one receiving space (31) for at least one test body (2). An alignment axis which is provided by the passage channel (33) intersects the at least one receiving space (31).