• Aparna Patil

Areas where Compliant Design may be the only option.

Updated: 2 days ago

  1. Where precise motion is a design requirement

Precise motion

In many precision devices like watches or precision machinery, especially those where there is repeated movement, traditional rigid-body designs cause a degradation with time due to wear at the joints. In these cases, Compliant design is the only option. In the micro sensor area this becomes critical as well work in niche areas or in significantly constrained environments. For example, applications in miniaturised forms like Micro-Electro_mechanical MEMS sensors which are increasing due to the focus on Internet of Things (IOT), or in low noise or critical environments like medical or Space. In many of these areas, Compliant Design may be the only option. Robotics Medical Space Electronics Handheld tools Components in transportation since the parts need to perform for a long period with the same accuracy which maintains the precision.

2. Where component weight is a liability

Component weight

The weight of components can be significantly reduced by using compliant mechanisms since the number of parts is lower. Typical examples where component weight is a critical factor are in aerospace and medical-surgical applications. Also, the increase of micro mechanisms whether in watches or small precision devices makes compliant design critical.

3. Where space is limited - miniaturization

Limited Space

Compliant Design reduces the total number of parts and joints needed. This makes it easier to reduce the size of the overall machine. This can be a significant advantage in the fabrication of micro-mechanisms. This is a very promising field due to the increase in IOT (Internet of Things) where more and more sensors are needed and distributed everywhere. MEMS (Micro electromechanical sensors) is one of the focus areas in the current industry and CMDE Labs can provide expert advice on this.

4. Where mechanism noise is a constraint

Traditional mechanisms are noisy due to friction between different moving parts. Compliant mechanisms use component flexibility instead of friction. Hence, they have lower noise levels. In the field of aerospace, micro electronics, and medical, the noise created during a mechanism can be a detriment. These also are increasingly being used for acoustic applications.

5. Uninterrupted and improved performance

Compliant mechanisms reduce friction and the need for lubrication. This is because of the smaller number of movable joints such as a pin (turning) and sliding joints. These parameters are useful in mechanisms which are difficult to access, or where harsh environments adversely affect the joints. It has particular relevance in space applications, where low gravity makes lubricants evaporate faster. Reduction of wear and maintenance also helps reduce the overall cost of ownership as well as improve the product life.

Want to know how compliant mechanisms may be useful for your product and also want to retain the quality and performance of it? Then please do not hesitate to get in touch with CMDE Labs! Fix your appointment with us now.

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