Tared Caliper With Flexible Member For Calibrated Measurement Effort
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Solution Overview
Problem
Vernier calipers lack devices to ensure calibrated measurement efforts, leading to reduced accuracy and increased errors due to the human factor, particularly when measuring elastic and large-size details, as the regulated efforts do not correspond to optimal conditions.
Innovation Solution
A tared caliper with a device featuring a flexible member between the feed mechanism and measuring frame, allowing for optimal measurement efforts to be set without distorting the parallelism of the jaws, using replaceable calibrated flexible members to adjust efforts based on the specific conditions of the detail being measured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vernier calipers are used without calibrated effort devices, then the device structure remains simple, but measurement accuracy deteriorates due to human factor effects and uncontrolled measurement efforts
Solution Approach 1:
A flexible member is introduced as an intermediary element between the measuring frame and the object being measured. This flexible member automatically adjusts and maintains the optimal measurement effort without requiring complex mechanical effort control mechanisms, thus improving measurement accuracy while keeping the device structure relatively simple.
Solution Approach 2:
The flexible member's elasticity parameter is utilized to provide the required measurement effort. By selecting flexible members with appropriate elastic coefficients, the device can adapt to different measurement conditions (elastic and large-size details) while maintaining consistent measurement quality without complex adjustment mechanisms.
2Reliability
If regulated measurement efforts are established by standards, then measurement consistency is improved, but the efforts are not optimal for elastic and large-size details
Solution Approach 1:
Instead of using fixed regulated efforts, the flexible member provides a dynamic measurement effort that automatically adapts to the specific characteristics of the object being measured. This allows the measurement effort to be optimized for each specific case (elastic details, large-size details) while maintaining consistency through the physical properties of the flexible member itself.
3Force
If additional movable measuring jaw is added to ensure calibrated effort, then measurement effort control is improved, but parallelism of measuring jaws deteriorates and measurement error increases
Solution Approach 1:
The flexible member serves as an intermediary that transmits measurement effort without interfering with the parallelism of the measuring jaws. Unlike rigid effort control mechanisms that may distort jaw alignment, the flexible member naturally accommodates positional variations while maintaining consistent measurement force, thus preserving jaw parallelism.
4Area of stationary object
If measurement effort is increased for large-size details, then full contact of measuring jaws is improved, but measurement of elastic details causes material deformation
Solution Approach 1:
The flexible member's elastic parameter is selected to provide appropriate measurement effort for different object types. For large-size details, the flexible member's elasticity allows sufficient force for full jaw contact, while for elastic details, the same flexible member naturally reduces the applied force to prevent deformation, thus adapting to different measurement conditions without manual adjustment.
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 tared caliper reduces human factor effects and measurement errors by 30-60% by ensuring optimal measurement efforts across various conditions, improving accuracy and enabling precise measurements of elastic and large-size details without compromising parallelism.
Implementation Method 1
A tared caliper with a device featuring a flexible member between the feed mechanism and measuring frame
Data Source
AI summary
A tared caliper having a measuring bar with a fixed jaw, a moving frame with a measuring indicator and with a moving jaw, an accurate feed mechanism, a measurement effort device with a calibrated flexible member. The calibrated flexible member in form the non-fixed replaced cylindrical compression spring with effort from 0.5 . . . 3 N to 25 . . . 60 N. The non-fixed replaced cylindrical compression spring coaxial into the rod inside the body by the measurement effort device. The body is connected to a moving frame. The force indicator includes from the marking window on the body and from the force scale on the rod. The rod is connected to an accurate feed mechanism. The rod is pressed to the flexible member.