# 机械设计笔记 (@sanweizhongheng) on douyin

- id: koinon:creator:douyin_sanweizhongheng
- url: https://koinonlink.com/kol/douyin/sanweizhongheng
- schema_version: 1.4

## Identity
- platform: douyin
- handle: sanweizhongheng
- platform_url: https://www.douyin.com/user/MS4wLjABAAAAqc9o9vuxFkHERYHNs9cKt2EFh4Q-xn-3t_nqzpCK6vuwGRY_8DK30Zm-opVDOJDc
- country: China
- entity_type: creator
- person_id: Cross-platform identity not resolved for this creator.

## Reach
- followers: 96938
- following: 26
- posts_total: 28
- posts_observed: 2
- verified: true
- size_tier: koc

## Engagement
- status: peak_post_only
- peak_post_engagement_rate: 0.08955
- best_post_interactions: 8681
- measurement_source: cn_posts_max
- measurement_formula: likes + comments + shares (douyin) or likes + comments + collects (xiaohongshu), max over observed posts
- comparable_pool: peak_interactions
- status_note: We have only the single best observed post, so no mean exists. peak_post_engagement_rate is an UPPER BOUND, systematically higher than an average — never compare it against an average rate.
- unit_note: engagement_rate and peak_post_engagement_rate are ratios (0-1); avg_interactions_per_post and best_post_interactions are absolute counts. Read status before reading any number: a null rate has several different causes and status says which one applies here.

## Content
- category: software
- subcategory: devtools
- category_confidence: 0.95
- category_source: derived_from_recent_content
- topics: 工程材料选型与热处理, 公差配合与精度设计, 齿轮传动计算与选型, 电机与液压缸选型计算, 螺纹连接与紧固件设计, 表面处理工艺
- bio: 想学机械设计可联系，可一对一～～～
作品资料包括全套表面处理文档+v：  jxbiji
公司机械结构主管，持续分享，感谢关注！
工业软件 / 机械工具 / 技术服务推广可私信沟通
暂不接零散设计外包，欢迎留言提问

## Audience (inferred)
- status: present
- description: Mechanical design engineers and non-standard automation practitioners, primarily frontline structural designers, product developers, and process executors in manufacturing companies
- roles: design
- seniority: practitioner
- pain_points: Incorrect material grade and heat treatment selection often lead to part failure or cost overruns, Non-standard tolerance fits, thread annotations, and groove designs cause machining rework, Lack of quick-reference resources for strength calculations and component selection of common parts like gears, motors, and hydraulic cylinders, Insufficient experience in surface treatments and precision design impacts part wear resistance, corrosion resistance, and assembly reliability
- posts_analysed: 100
- confidence: 0.9

## Commercial (inferred)
- audience_buyer_fit: 0.9
- promotion_intent: 0.8
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 70
- authenticity_basis: engagement_observed
- credibility_score: 67
- flagged_for_review: false
- koinon_bd_grade: A — measures Koinon partner-outreach fit, not creator quality
- interpretation: Signals for triage, not verdicts. A flag means the profile is worth a manual check.

## Evidence
- [douyin_sanweizhongheng#e0ca5ffb] 机械设计之表面处理系列。累计两百九十万播放，感谢这一年大家的支持，将会持续分享关于机械设计方面的知识，感恩陪伴 (https://www.douyin.com/user/MS4wLjABAAAAqc9o9vuxFkHERYHNs9cKt2EFh4Q-xn-3t_nqzpCK6vuwGRY_8DK30Zm-opVDOJDc)
- [douyin_sanweizhongheng#293f2446] #机械设计 #表面处理  #电镀  #阳极氧化  #solidworks / @山川鼓语-海燕创作的原声 / 作者声明：拍摄于 2026-02-06 江苏苏州 / 公差配合怎么选？常用配合一次讲清。#机械设计 #公差配合 #非标自动化 #机械加工 #机械制图 / 致英雄（剪辑版） / 作者声明：个人观点，仅供参考 / 介绍机械零件精度设计、公差配合相关知识 / 这么有趣的合集，不能只有我一个人知道吧

## Provenance
Every inferred field below carries how it was produced. Facts stay facts; inferences stay inferences.

- audience.description: source_type=ai_inferred, confidence=0.9, freshness_days=84, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.9, freshness_days=84, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.9, freshness_days=84, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=85, method=llm_scorer — Relative signal within Koinon indexing, not a market-wide score.
- commercial.promotion_intent: source_type=ai_inferred, confidence=0.6, freshness_days=85, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=107, method=profile_snapshot_and_engagement_ratio_heuristic — Means "worth a manual check", NOT confirmed fraud. Flags can be wrong and are not a verdict about the person.
- quality.authenticity_score: source_type=heuristic, confidence=0.5, freshness_days=85, method=Starts at 60; interactions-per-follower on collected posts then adds or subtracts (large following with near-zero engagement is penalised heavily). — The input set differs by platform; do not compare this score across platforms.
- quality.koinon_bd_grade: source_type=ai_inferred, confidence=0.5, freshness_days=107, method=llm_partner_fit_classifier + authenticity >= 55 AND fit_score >= 0.45 => A; authenticity >= 40 AND fit_score >= 0.3 => B; else C. authenticity < 30 or a promotional-pattern flag => quarantine. — Koinon partner-outreach fit, not creator quality.
- reach.followers: source_type=observed, confidence=0.95, freshness_days=107, method=platform_profile

## Freshness
- profile_checked_days_ago: 107
- content_analysed_days_ago: 85
- audience_updated_days_ago: 84

## AI retrieval
- indexing_requests: 10
- user_triggered_requests: 0
- note: Being indexed in bulk is not the same as being retrieved to answer a question.

## This profile
- Claim or correct: https://koinonlink.com/claim?k=douyin_sanweizhongheng
- Request removal: https://koinonlink.com/claim?k=douyin_sanweizhongheng
- Terms: https://koinonlink.com/for-ai