Decision inputs
- Joint torque and stiffness targets
- Backlash requirement
- Collision energy rating
- Mass and space limits
APPLICATION SOLUTION
Robotics joint preload & overload protection
Robot joints and transmissions use disc springs for reducer preload, bearing preload and collision overload protection; this entry page lists precision drive decision points.
ENGINEERING PROBLEM
Joint stiffness, backlash and collision safety impose dual constraints on preload and overload protection.
BOUNDARY
This page describes a decision pattern and does not promise size or performance for another operating condition.
Solution pattern
- Disc springs preload bearings and reducers to cancel backlash
- Collision torque limited by spring-loaded friction
- Lightweight via small, highly stressed discs
Key risks
- Characteristic drift after collisions
- High-stress fatigue
- Temperature rise alters preload
Verification plan
- Stiffness and backlash measurement
- Collision trip/reset testing
- Life and temperature re-tests
Source-backed correspondences
| Summary | Load | Travel | Source |
|---|---|---|---|
| 机器人预紧——按preload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。 | 按关节预紧目标 | 补偿行程 | Source ↗ |
Evidence (library locators)
Every technical claim traces to a specific asset version and page; restricted sources show locator metadata only.
- 302 US 8 316 959 B2 Torque limiting device with disk springs 碟簧扭矩限制器 PDF p.6 · mechanism(internal source; excerpt not public)
- 2023 IEEEAccess Compliant VSA Spring Pretension PDF p.2 · mechanism(internal source; excerpt not public)
- 303 US 2011 0120830 A1 Compact disc spring torque limiter 紧凑型碟簧扭矩限制器 PDF p.5 · mechanism(internal source; excerpt not public)
- 301 US 9 759 267 B2 Torque limiting clutch for use with robot arm 机器人臂扭矩限制 PDF p.22 · mechanism(internal source; excerpt not public)
- 2023 IEEEAccess Compliant VSA Spring Pretension PDF p.7 · numeric(internal source; excerpt not public)
- 2023 IEEEAccess Compliant VSA Spring Pretension PDF p.8 · numeric(internal source; excerpt not public)
- 2023 IEEEAccess Compliant VSA Spring Pretension PDF p.9 · numeric(internal source; excerpt not public)
- 2023 IEEEAccess Compliant VSA Spring Pretension PDF p.9 · numeric(internal source; excerpt not public)
- 300 DFKI Novel Serial Elastic Actuator Elastic module without friction hys PDF p.4 · numeric(internal source; excerpt not public)
- 301 US 9 759 267 B2 Torque limiting clutch for use with robot arm 机器人臂扭矩限制 PDF p.7 · numeric(internal source; excerpt not public)
- 303 US 2011 0120830 A1 Compact disc spring torque limiter 紧凑型碟簧扭矩限制器 PDF p.3 · numeric(internal source; excerpt not public)
- US8382177 RoboticGripper QuickChange Finger Belleville Compliance PDF p.2 · numeric(internal source; excerpt not public)
Cases illustrate decisions and do not constitute a specification promise for any other operating condition.
ENGINEERING REVIEW