Tangential Thread Rolling Head Identical Roll Offset
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Solution Overview
Problem
Existing tangential thread rolling heads require the production of two differently offset thread rolls, increasing manufacturing costs and risking damage due to mix-ups during processing.
Innovation Solution
Designing thread rolls with identical profiles and using a gear system with twisted roller and pinion engagement means to achieve the required offset, ensuring the profiles are offset in a single defined rotational position during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If two different thread rollers with offset thread profiles are produced, then the required offset dimension is achieved, but manufacturing effort increases
Solution Approach 1:
The patent applies asymmetry by rotating the thread rollers relative to each other by a specific angle (e.g., 90 degrees) around their axes. This asymmetric rotational positioning creates the required offset between thread profiles without requiring different thread roller designs. The asymmetric arrangement of engagement means (teeth, claws, or other coupling elements) on the thread rollers and corresponding gears ensures that the offset is automatically achieved during assembly.
2Manufacturing precision
If two different thread rollers with offset thread profiles are produced, then the required offset dimension is achieved, but the risk of damage and loss of function increases due to interchangeability
Solution Approach 1:
The asymmetric rotational positioning of identical thread rollers, combined with asymmetric engagement means, creates a self-locking mechanism that prevents incorrect installation or interchangeability. The specific angular orientation required for proper engagement ensures that thread rollers can only be installed in the correct position, eliminating the risk of mix-ups during processing while maintaining manufacturing simplicity.
3Ease of manufacture
If identical thread rollers are used with different rotational positions, then manufacturing is simplified, but the alignment precision must be ensured during assembly
Solution Approach 1:
The engagement means (teeth, claws, or coupling elements) on the thread rollers and corresponding gears are designed to automatically guide and lock the thread rollers into the correct rotational positions during assembly. This self-aligning mechanism ensures precise angular positioning without requiring external alignment tools or complex assembly procedures, allowing identical thread rollers to be easily installed in the correct offset configuration.
Data Source
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AI summary
The invention relates to a tangential thread rolling head comprising two fork-shaped rolling head arms (12, 14) in each of which a thread roll (16, 20) is rotatably mounted on an axle (18, 22), wherein the thread rolls are each engaged with a transmission coupling the thread rolls, and wherein the thread rolls can be inserted laterally into a mounting position in the rolling head arms before the axles are installed, in which each axle can be inserted into a bearing bore of the thread rolls, wherein the two thread rolls, including a thread profile formed on their circumferential surface, are identically designed, such that the thread rolls have roller engagement means which engage with transmission engagement means of the transmission, and that the roller engagement means and the transmission engagement means are designed such thatthat the threaded rollers can each only be inserted laterally into the mounting position in a single defined rotational position, whereby the rotational position is different for the two threaded rollers, so that the thread profiles of the threaded rollers have an offset from each other in the mounting position.