Experimental and numerical study of a plastic worm meshed with a steel helical gear
Bibliographic record
Abstract
In this paper, the transmission mechanism of a plastic worm meshed with a steel helical gear is applied to achieve power transmission and motion transfer. Tooth profile equations of the gear pair are derived and general meshing conditions are proposed in terms of gear geometry. A mathematical model of the tooth profiles of the gear pair is established. Contact stress analysis and general evolution law of the tooth profiles are discussed using the finite element method. Material characteristics, mesh generation, contact definition, and constraint conditions are given. For comparison, analysis results of a steel worm meshed with a steel helical gear is also provided. Through the hobbing process, injection molding, and machining center, samples of steel helical gears, plastic worm, and steel worm are completed, respectively. A characteristic test of the transmission mechanism of the plastic worm meshed with a steel helical gear is carried out based on the microtransmission experimental platform. The contrasting results show that the plastic worm has better transmission performance.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".