The paper is presents the understanding important of digital prototype over prototype in manufacturing engineering. Today, in this modern fast growing industrial age, every company is looking for speed in manufacturing to meet the needs and requirements of its clients. Whereas agricultural field is still an exception. Robots are more quickly, cheaply, and accurately than humans have ever been. The materials in contact with the moving arm experience very large elastic deformations and stress, and may move at a velocity close to that of the tool. Our project mainly deals around the shearing operation, our challenge is designing and optimizing a light weight material robotics arm’s part which is more durable and reliable. After related study we have achieved the design and analysis of a jointed robotic arm’s part were the base is fixed and the remaining joints move in vertical and horizontal directions.