PEEK 擺線減速器是一種以聚醚醚酮（PEEK）復(fù)合材料為核心傳動部件的擺線針輪減速裝置，結(jié)合了擺線傳動的高承載能力與 PEEK 材料的輕質(zhì)化特性，以下從結(jié)構(gòu)原理、材料優(yōu)勢、性能參數(shù)及應(yīng)用場景進(jìn)行詳細(xì)介紹：
一、結(jié)構(gòu)原理
采用單級擺線針輪傳動結(jié)構(gòu)：由偏心輸入軸、兩個相位差 180° 的 PEEK 擺線輪、鋼制針齒殼及輸出機(jī)構(gòu)組成。當(dāng)輸入軸旋轉(zhuǎn)時，通過偏心套驅(qū)動擺線輪做行星運動，擺線輪齒廓與針齒殼上的針齒嚙合，將運動和動力通過輸出軸傳遞。核心創(chuàng)新點在于擺線輪采用 40% 碳纖維增強(qiáng) PEEK 注塑成型，針齒銷采用 PEEK - 金屬復(fù)合結(jié)構(gòu)（外層為 PEEK 耐磨層，內(nèi)層為鋼制芯軸），實現(xiàn)傳動部件的輕量化與自潤滑。
二、材料優(yōu)勢
輕量化設(shè)計：PEEK 擺線減速器密度僅 1.45g/cm³，較鋼制擺線輪減重 50%-60%，整機(jī)重量降低 35% 以上，特別適用于對負(fù)載敏感的機(jī)器人關(guān)節(jié)；
耐磨損特性：PEEK 材料表面硬度達(dá)洛氏硬度 R120，配合碳纖維增強(qiáng)，齒面磨損率僅為鋼制的 1/5，在無潤滑條件下仍可保持長效運行；
溫度適應(yīng)性：可在 - 50℃~200℃寬溫范圍內(nèi)穩(wěn)定工作，熱變形溫度高達(dá) 343℃，滿足高溫工業(yè)環(huán)境需求。
三、核心性能參數(shù)
減速比：8:1~100:1（單級），支持兩級串聯(lián)實現(xiàn)更高減速比
額定扭矩：10~200N?m（對應(yīng)型號 BX-25~BX-100）
傳動精度：回程間隙≤3 弧分，傳動效率＞95%（額定工況下）
壽命指標(biāo)：額定負(fù)載下疲勞壽命＞8000 小時，沖擊負(fù)載承受能力為額定扭矩的 3 倍
四、典型應(yīng)用場景
人形機(jī)器人關(guān)節(jié)：可適配 50W 至 5kW 電機(jī)，借助內(nèi)外軸復(fù)合結(jié)構(gòu)能減重 33%，扭矩密度提升 50%，契合手指、膝關(guān)節(jié)等需兼顧力量與靈活度的復(fù)雜動作場景。
工業(yè)機(jī)器人輔助部件：工業(yè)機(jī)器人輕負(fù)載腕部關(guān)節(jié)或需頻繁啟停、靈活轉(zhuǎn)向的附加執(zhí)行模塊等，用 PEEK擺線減速器，能減輕非核心傳動部位重量，并借其耐疲勞性減少停機(jī)維護(hù)時間。


五、關(guān)鍵部件的材料應(yīng)用
擺線輪：擺線輪是PEEK擺線針輪減速器的核心傳動部件。使用 PEEK 或碳纖維增強(qiáng) PEEK 制作擺線輪，在維持傳動精度前提下，可大幅減輕重量。據(jù)公開內(nèi)容顯示，科盟創(chuàng)新推出的 PEEK 輕量化擺線減速機(jī)的擺線輪通過材料創(chuàng)新，讓減速器在 1.62kg 的重量下抗沖擊能力提升 200%，適配人形機(jī)器人的高負(fù)載需求。同時，PEEK 的耐疲勞性有助于延長擺線輪在高頻、交變載荷工況下的使用壽命。
針齒：針齒與擺線輪齒面直接接觸，要求具備良好的耐磨性。采用 PEEK 基復(fù)合材料針齒或 PEEK 涂層的金屬針齒，能利用 PEEK 低摩擦系數(shù)特點，減少齒面摩擦與磨損，可能降低對潤滑的依賴或允許使用更簡易的潤滑方案。此外，其彈性特質(zhì)能在一定程度上緩沖嚙合沖擊，減小運行噪音。
支撐與密封部件：減速器的端蓋、支撐環(huán)等結(jié)構(gòu)件用 PEEK 材料，可減輕非傳動核心部分重量，達(dá)成整體輕量化。PEEK 制作的密封件，能憑借其耐高溫、耐化學(xué)腐蝕等優(yōu)勢，防止減速器內(nèi)部潤滑油泄漏，并抵御外部惡劣環(huán)境侵蝕，適合水下、高溫等特殊場景機(jī)器人應(yīng)用。
對比傳統(tǒng)PEEK擺線針輪減速器的優(yōu)勢
輕量化表現(xiàn)突出：PEEK 密度約 1.32g/cm³，遠(yuǎn)低于常用的金屬材料，用其制造部分零件能讓減速器重量顯著減輕，降低機(jī)器人關(guān)節(jié)負(fù)載，提升運動靈活性與能量利用效率，對追求高自由度和長續(xù)航的人形機(jī)器人等意義重大。
優(yōu)化的噪音控制：因 PEEK 材料具一定彈性與自潤滑性，可有效緩沖擺線輪和針輪嚙合產(chǎn)生的振動，進(jìn)而減少噪音，利于機(jī)器人在如實驗室、醫(yī)療環(huán)境等對噪音敏感的場景使用。
強(qiáng)化的環(huán)境適應(yīng)性：PEEK 擁有出色的耐化學(xué)性與寬溫域使用性能，在高溫、有化學(xué)腐蝕風(fēng)險等傳統(tǒng)金屬減速器易失效的復(fù)雜場景中，基于 PEEK 部件的減速器能穩(wěn)定運行更久。
主要應(yīng)用場景
人形機(jī)器人關(guān)節(jié)：PEEK擺線針輪減速器單級減速比可達(dá) 87，雙級甚至能超過 3000，有高負(fù)載、高精度等特點，PEEK 輕量化版本適合人形機(jī)器人的腰髖、下肢等既要力量又對重量敏感的關(guān)節(jié)。國信證券研究表明，下肢關(guān)節(jié)采用對應(yīng)減速器可減輕 18% 重量，控制精度提升 3 倍左右。
特種機(jī)器人：用于航空探測、深?？瓶嫉忍胤N機(jī)器人時，其輕量化可降低運輸與動力成本，優(yōu)異環(huán)境耐受性可保障減速器在復(fù)雜溫濕度、存在化學(xué)侵蝕物等狀況下可靠運作。


The PEEK cycloidal reducer is a cycloidal pinwheel reduction device with a PEEK composite material as its core transmission component. It combines the high load-bearing capacity of cycloidal transmission with the lightweight characteristics of PEEK material. The following details are provided in terms of structural principle, material advantages, performance parameters, and application scenarios:
1. Structural Principle
PEEK cycloidal reducer adopts a single-stage cycloidal pinwheel transmission structure: consisting of an eccentric input shaft, two PEEK cycloidal wheels with a phase difference of 180°, a steel pin gear housing, and an output mechanism. When the input shaft rotates, the eccentric sleeve drives the cycloidal wheel to perform planetary motion. The cycloidal wheel tooth profile meshes with the pin teeth on the pin gear housing, transmitting motion and power through the output shaft. The core innovation lies in the use of 40% carbon fiber reinforced PEEK injection molding for the cycloidal wheel and the PEEK-metal composite structure for the pin gear pin, achieving lightweight and self-lubrication of the transmission components.
2. Material Advantages
Lightweight Design: The density of the PEEK cycloidal reducer is only 1.45g/cm³, reducing the weight by 50%-60% compared to steel cycloidal wheels, and reducing the overall weight by more than 35%, especially suitable for robot joints with sensitive load requirements;
Toughness: The surface hardness of PEEK material reaches Rockwell hardness R120, combined with carbon fiber reinforcement, the tooth surface wear rate is only 1/5 of that of steel. It can still maintain long-term operation without lubrication under high-temperature conditions;
Temperature Adaptability: PEEK cycloidal reducer can work stably within a wide temperature range of -50℃ to 200℃, with a heat deformation temperature of up to 343℃, meeting the requirements of high-temperature industrial environments.
3. Core Performance Parameters
Reduction Ratio: 8:1 to 100:1 (single stage), supporting two-stage series connection to achieve higher reduction ratios
Rated Torque: 10 to 200N?m (corresponding models BX-25 to BX-100)
Transmission Accuracy: Return clearance ≤ 3 arc minutes, transmission efficiency > 95% (under rated conditions)
Life Index: Fatigue life under rated load > 8000 hours, impact load-bearing capacity is 3 times the rated torque
4. Typical Application Scenarios
Humanoid robot joints: Can be adapted to 50W to 5kW motors. With the internal and external shaft composite structure, it can reduce weight by 33%, torque density increases by 50%, suitable for complex motion scenarios such as fingers and knee joints that require both strength and flexibility.
Industrial robot auxiliary components: For light-load wrist joints of industrial robots or additional execution modules that need frequent start-stop and flexible turning, using PEEK cycloidal reducers can reduce the weight of non-core transmission parts and reduce maintenance downtime due to its fatigue resistance.

V. Application of Materials for Key Components
Spiral Bevel Gear: The spiral bevel gear is the core transmission component of the PEEK spiral bevel gear reducer. Using PEEK or carbon fiber reinforced PEEK to manufacture the spiral bevel gear can significantly reduce the weight while maintaining the transmission accuracy. According to public information, the PEEK lightweight spiral bevel reducer introduced by Komei Innovation has a spiral bevel gear that, through material innovation, increases the impact resistance of the reducer by 200% at a weight of 1.62 kg, meeting the high-load requirements of humanoid robots. At the same time, the fatigue resistance of PEEK helps extend the service life of the spiral bevel gear under high-frequency and alternating load conditions.
Pin Teeth: The pin teeth directly contact the tooth surface of the spiral bevel gear and require good wear resistance. Using PEEK-based composite material pin teeth or PEEK-coated metal pin teeth can take advantage of the low friction coefficient of PEEK to reduce the friction and wear on the tooth surface, possibly reducing the reliance on lubrication or allowing for simpler lubrication schemes. Additionally, its elastic property can buffer the impact of meshing, reducing operating noise.
Support and Sealing Components: The end cover, support ring, and other structural components of the reducer are made of PEEK material, which can reduce the weight of non-transmission core parts and achieve overall lightweighting. The PEEK-made seals can, with their advantages of high-temperature resistance and chemical corrosion resistance, prevent the leakage of lubricating oil inside the reducer and resist the erosion of harsh external environments, suitable for underwater, high-temperature, and other special scenarios for robot applications.
Advantages compared to traditional PEEK spiral bevel gear reducers
Outstanding lightweight performance: The density of PEEK is approximately 1.32 g/cm³, much lower than commonly used metal materials. Using PEEK to manufacture some parts can significantly reduce the weight of the reducer, lower the load on robot joints, improve motion flexibility and energy utilization efficiency, which is of great significance for humanoid robots that pursue high degrees of freedom and long battery life.
Optimized noise control: Due to the certain elasticity and self-lubrication property of PEEK, PEEK cycloidal reducer can effectively buffer the vibration generated by the meshing of the spiral bevel gear and pin wheel, thereby reducing noise and facilitating the use of robots in scenarios such as laboratories and medical environments that are sensitive to noise.
Enhanced environmental adaptability: PEEK has excellent chemical resistance and wide temperature range usage performance. In complex scenarios where traditional metal reducers are prone to failure due to high temperatures and chemical corrosion risks, reducers based on PEEK components can operate stably for a longer time.
Main application scenarios
Humanoid Robot Joints: The single-stage reduction ratio of the PEEK spiral bevel gear reducer can reach 87, and the double-stage can even exceed 3000. PEEK cycloidal reducer has high-load, high-precision characteristics. The lightweight PEEK version is suitable for joints such as the waist and hips, and lower limbs of humanoid robots that require both strength and weight sensitivity. According to research by Guoxin Securities, using the corresponding reducer for the lower limb joints can reduce the weight by 18% and improve control accuracy by about 3 times.
Special Robots: When used in special robots such as aerospace exploration and deep-sea research, the lightweight feature can reduce transportation and power costs, and the excellent environmental tolerance can ensure the reliable operation of the reducer in complex temperature and humidity conditions and the presence of chemical corrosive substances.