Ovality Confusion
Hey guys,
This is one of the problems that we as a company face during our quality audit. We cater machined products to the customers and we recently had an argument on how much ovality can a hole have it its tolerance and dia is given. For example, lets consider we have a hole of 55mm with a tolerance of +0.05/-0.05. Present scenario is that the ovality of that hole can be (0.05+0.05)/2 that is 0.05mm. But i am not able to find any proof from the standards to back it up. Also when i had a look up at the pipe industries, they are measuring ovality in percentage, and their standards are 5-8% of the nominal diameter is applicable. But i just want to know if there is any specific standards for these kind of non-piping operatons. So i appriciate your help in this topic and if you can also provide with the source of your opinion, that would be really helpful. Thanks in advance.
Sid
This is one of the problems that we as a company face during our quality audit. We cater machined products to the customers and we recently had an argument on how much ovality can a hole have it its tolerance and dia is given. For example, lets consider we have a hole of 55mm with a tolerance of +0.05/-0.05. Present scenario is that the ovality of that hole can be (0.05+0.05)/2 that is 0.05mm. But i am not able to find any proof from the standards to back it up. Also when i had a look up at the pipe industries, they are measuring ovality in percentage, and their standards are 5-8% of the nominal diameter is applicable. But i just want to know if there is any specific standards for these kind of non-piping operatons. So i appriciate your help in this topic and if you can also provide with the source of your opinion, that would be really helpful. Thanks in advance.
Sid
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