Double-Threaded Tolerance Compensator for Precise Screw Alignment
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Solution Overview
Problem
Existing tolerance compensation elements require manual adjustment of the distance between components, lack reliability in automatic compensation, and often suffer from high imprecision due to frictional issues and thread errors.
Innovation Solution
A double-threaded bolt with a supporting shoulder and a tapered retaining section equipped with a dragging element that creates a friction-fit or form-fit connection with a female thread element, allowing for automatic compensation of the distance between components through co-rotation, ensuring reliable and precise screwing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a double threaded bolt with supporting shoulder is used for automatic tolerance compensation, then the distance between components can be compensated automatically, but frictional errors and thread errors cause high imprecision and unreliable compensation
Solution Approach 1:
A dragging element is introduced as an intermediary component between the female thread element and the double threaded bolt. This dragging element has a dragging surface that creates a deliberate friction connection, allowing the female thread element to reliably drive the double threaded bolt during rotation while compensating for thread errors and frictional variations in the thread engagement
Solution Approach 2:
The friction connection between the dragging element and the female thread element automatically compensates for thread errors and frictional variations during the screwing process. The system self-adjusts through the frictional interaction, eliminating the need for manual intervention or adjustment to achieve precise tolerance compensation
2Device complexity
If a movable clamping bushing with thread is used on a cylindrical axial section, then the second thread is provided, but manual adjustment of the distance between components is required
Solution Approach 1:
The double threaded bolt with supporting shoulder and dragging element automatically compensates for distance variations between components through co-rotation during the screwing process. The friction connection ensures that the female thread element drives the bolt to rotate and translate, automatically adjusting to the actual distance without manual intervention, thereby simplifying operation while maintaining construction complexity
3Extent of automation
If a female thread element with high friction value is used to overcome moment of friction, then rotation and axial displacement occur, but thread errors and waviness increase the moment of resistance
Solution Approach 1:
The dragging element serves as a mediator that distributes and controls the frictional interaction between the female thread element and the double threaded bolt. By providing a dedicated dragging surface with optimized friction characteristics, it ensures reliable transmission of rotational motion while compensating for thread errors and waviness, thereby improving the reliability of the automatic tolerance compensation mechanism
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 solution enables automatic and precise compensation of the distance between components, enhancing the reliability and efficiency of the screw connection while minimizing manual intervention and reducing the impact of frictional errors.
Implementation Method 1
a friction-fit or form-fit connection with a female thread element, allowing for automatic compensation of the distance between components through co-rotation
Data Source
AI summary
A tolerance compensation element with which tolerances in the distance between a first and a second component are compensable, with the tolerance compensation element comprising: a double threaded bolt with a first and a second axial thread section with opposite convolution direction which are separated from one another by means of a supporting shoulder arranged between them, and adjacent to the first thread section, a tapered retaining section with a dragging element arranged on it is provided in a direction facing away from the shoulder, being adapted to co-rotate the tolerance compensation element via the dragging element in a friction-fit manner by means of an inner thread of a female thread element matching the first thread section.