Fixture Design Based on the previously outlined process plan, we designed two specialized fixtures. Both clamps are mounted on the lathe spindle flange using a 206H7 stop. Clamp 1 is an eccentric clamp, and the 206H7 stop is positioned eccentrically relative to the 184h7 boss to ensure the required eccentricity of the workpiece hole. Clamp 2 is a concentric clamp used to meet the coaxiality requirements of the workpiece hole. To ensure that the eccentricity of the workpiece meets the drawing specifications, the eccentricity (e) of Clamp 1 must be tightly controlled within a certain tolerance. We set the tolerance for the eccentricity of Clamp 1 as e. The fit between the clamp and the lathe spindle flange's positioning surface is 206H7/h6, which has a maximum clearance of 0.075 mm. The maximum clearance between the workpiece and the 184H9/h7 bore of Clamp 1 is 0.118 mm. Therefore, the maximum possible error in the eccentricity of the workpiece is calculated as follows: max = e + 1/2 × (1max + 2max) = e + 1/2 × (0.075 + 0.118) = e + 0.0965 Given that max = 0.1 mm, substituting into the formula gives: e = 0.1 - 0.0965 = 0.0035 mm. However, since the required eccentricity is 0.1 mm, we adjust the calculation accordingly. If max = 0.2 mm, then e = 0.2 - 0.0965 = 0.1035 mm. Thus, the eccentricity of Clamp 1 should be maintained within the range of 12.5 ± 0.05 mm. For Clamp 2, if the coaxiality error of the workpiece hole is denoted as d, and the coaxiality error between the two cylindrical locating surfaces (206H7 and 180h7) on the clamp is f, then: dmax = f + 1/2 × (1max + 2max) = f + 1/2 × (0.075 + 0.103) = f + 0.089 Assuming dmax = 0.1 mm, then f = 0.1 - 0.089 = 0.011 mm. Since this value is very small, it indicates that Clamp 2 cannot tolerate any significant coaxiality error. To eliminate this, we mounted Clamp 2 on the lathe and machined the 180h7 locating surface to ensure perfect coaxiality, thereby meeting the workpiece’s requirements. The machining process and fixture design were validated through practical application. Not only do they guarantee the accuracy of the workpiece, but they also enhance production efficiency. By making full use of existing equipment, the process reduces costs and improves overall productivity. This method proves to be efficient, cost-effective, and reliable for processing similar parts. Wood Graining Rubber,Decorative Wooden Graining Rubber,Textured Wooden Graining Rubber,Diy Textured Rubbr Wooden Graining Jiangmen Nichiyo Decorative Material Co.,Ltd. , https://www.nichiyopt.com