[Q] What are the practical applications of parallel robots?
[Answer] The parallel robot can be defined as a closed loop mechanism that the moving platform and the fixed platform are connected by at least two independent kinematic chains. The mechanism has two or more degrees of freedom and is driven in parallel. Workshop CMM Q&A essence
Parallel robot has no accumulated error and high accuracy; The driving device can be placed on or near the fixed platform, so that the moving part has light weight, high speed and good dynamic response; Compact structure, high rigidity and large bearing capacity; The working space is small.
Based on the above characteristics, parallel robots have been widely used in areas requiring high stiffness, high accuracy or large load without large workspace. The practical application fields include:
1. Sorting, handling and packing in food, electronics, chemical, packaging and other industries.
2. Metal cutting
3. Class milling machine, grinder drilling machine or spot welding machine, cutting machine.
4. Measuring machine, used as error compensator of other mechanisms
5. Cell manipulation robots in biomedical engineering, injection and segmentation of cells, microsurgery robots, etc;
6. Parallel robots are also widely used in submarines and tank driving motion simulators in the military field, vector nozzles of the next generation fighter aircraft, docking devices of submarines and space vehicles, attitude controllers, etc;
Parallel robots have been used since the 1990s, mainly in medicine, electronics and other light industries. Parallel robots have a large bearing capacity; High precision; Small footprint; Fast; Wear resistance and other characteristics. This is a good choice for industrial production requiring high precision.
[Q] What are the characteristics of parallel robots?
[Answer] The characteristics of parallel robot are: (1) no accumulation and error, high accuracy; (2) The driving device can be placed on or near the fixed platform, so that the moving part has light weight, high speed and good dynamic response; (3) Compact structure, high rigidity and large bearing capacity; (4) The fully symmetric parallel mechanism has good isotropy;
[Q] Production efficiency of parallel robot production line
[Answer] High production efficiency. The parallel robot has greatly improved the production efficiency, freed the labor force and reduced the cost of human and material resources. Parallel robots are widely used in food, medicine, electronics and other light industries, and have unparalleled advantages in material handling, packaging, sorting and other aspects. In the past two years, with the increasing application of parallel robots in the market, it has become a new force in the growth of demand for industrial robots.
[Q] What are the common joints of parallel robots?
[Answer] Parallel robots often use rotary joints, mobile joints, spherical joints and Hooke joints.
[Q] Why is the repetition accuracy of parallel robot lower than that of series robot?
[Answer] Because parallel robots have the same requirements for three arms and high processing requirements, and generally use ordinary reducers.
For the robot in series (six joints), the size requirement for a single arm is not so high, only the link is compact, and the required reducer (RV, harmonic) accuracy is very high.