Decision inputs
- Rated and peak torque
- Stroke and buffering space
- Response and reset requirements
- Cycle life and duty
- Mounting interface (hollow shaft / motor shaft)
APPLICATION SOLUTION
Actuator torque protection
Disc spring stacks provide end-of-stroke cushioning, constant trip torque and overload protection for actuators and electric cylinders; this page outlines selection inputs, stack patterns and verification points, with specifications grounded in the cited sources and engineering review.
ENGINEERING PROBLEM
At stroke ends or under overload, electric cylinders and actuators transmit extreme torque and shock into the motor and drivetrain; an adjustable force-stroke buffer and dependable trip protection are required.
BOUNDARY
This page describes a decision pattern and does not promise size or performance for another operating condition.
Solution pattern
- Arrange a disc spring stack along the nut or output shaft as an adjustable-stiffness buffer
- Set stack stiffness with a preload-adjusting nut
- Absorb overload by spring compression or trigger friction trip
- Combine with a hydraulic chamber to suppress pressure surges where needed
Key risks
- Incorrect preload leaves buffering too stiff or too soft
- Fatigue and relaxation of springs under high-frequency cycling
- Friction face wear shifts the trip torque
Verification plan
- Torque-angle characteristic test
- Record of preload setting versus stiffness
- Trip torque re-test after life testing
- Temperature rise and lubrication checks
Source-backed correspondences
| Summary | Load | Travel | Source |
|---|---|---|---|
| 执行器扭矩保护——按overload-protection目标预选产品族；场景摘要仅供决策参考，不构成对其他工况的产品承诺。 | 按扭矩限值目标 | 过载打滑行程 | Source ↗ |
Evidence (library locators)
Every technical claim traces to a specific asset version and page; restricted sources show locator metadata only.
- 454 US20110120830A1 Compact disc spring torque limiter 紧凑碟簧扭矩限制器 PDF p.1 · mechanism(internal source; excerpt not public)
- 346 CN114825753B 电动缸 碟簧组缓冲电动执行机构 PDF p.4 · mechanism(internal source; excerpt not public)
- 345 US4860992 Valve actuator torque overload protector 阀 执行器过载保护器 PDF p.1 · mechanism(internal source; excerpt not public)
- 346 CN114825753B 电动缸 碟簧组缓冲电动执行机构 PDF p.1 · mechanism(internal source; excerpt not public)
- 346 CN114825753B 电动缸 碟簧组缓冲电动执行机构 PDF p.2 · mechanism(internal source; excerpt not public)
- 超磁致伸缩微位移致动器碟簧特征分析与设计 PDF p.1 · mechanism(internal source; excerpt not public)
Asset details → · access method in preparation
- 具有非对称分段线性刚度的超磁致伸缩微位移致动器的非线性分析 PDF p.1 · mechanism(internal source; excerpt not public)
Asset details → · access method in preparation
- 2016 TransJSME TiNi SMA Disc Spring Actuator PDF p.1 · mechanism(internal source; excerpt not public)
- 超磁致伸缩微位移致动器碟簧特征分析与设计 PDF p.2 · numeric(internal source; excerpt not public)
Asset details → · access method in preparation
- 超磁致伸缩微位移致动器碟簧特征分析与设计 PDF p.3 · numeric(internal source; excerpt not public)
Asset details → · access method in preparation
- 超磁致伸缩微位移致动器碟簧特征分析与设计 PDF p.4 · numeric(internal source; excerpt not public)
Asset details → · access method in preparation
- 具有非对称分段线性刚度的超磁致伸缩微位移致动器的非线性分析 PDF p.2 · numeric(internal source; excerpt not public)
Asset details → · access method in preparation
- 2016 TransJSME TiNi SMA Disc Spring Actuator PDF p.2 · numeric(internal source; excerpt not public)
- 2025 Micromachines Piezo Actuator Nonlinear Stiffness Coupling Preload PDF p.1 · numeric(internal source; excerpt not public)
Cases illustrate decisions and do not constitute a specification promise for any other operating condition.
ENGINEERING REVIEW