第1个回答 2012-10-18
About the precision grinding of YK05 -16.5X26 and 16.5X28,the hight of production drawing is 16.8±0.15(16.65~16.95), but precision grinding size you require is 16.785~16.79,so sizes of some parts cann't reach the precious grinding requiremnet .
Mr chen wants to ask whether they only product blank or modify the height of drawing like the past, but if do like this , peice weight will increase .In the past ,besause the number of precision granding was too few,they chose some products which had big allowance to grind accurately.However , the number of products you require increases now,so old methods are not proper.