{"id":389,"date":"2015-06-12T23:56:04","date_gmt":"2015-06-12T14:56:04","guid":{"rendered":"http:\/\/mechasea.com\/arakifunkeymachine-en\/?p=389"},"modified":"2017-08-01T00:06:45","modified_gmt":"2017-07-31T15:06:45","slug":"bandit-250-engine-boring","status":"publish","type":"post","link":"https:\/\/mechasea.com\/arakifunkeymachine-en\/?p=389","title":{"rendered":"Bandit 250 engine, boring"},"content":{"rendered":"

The brim of the sleeve protrudes from the upper surface of the cylinder block.
\n(I designed it like that.)<\/p>\n

<\/p>\n

So I reduce the top surface of the cylinder together.This work is called surface polishing.
\nIt is a unique name for sharpening the joint between the cylinder head and the cylinder.
\nOriginally, polishing is to grind with a grindstone.And cutting is to sharpen it with a knife.
\nBut, as in this time cutting is also called face grinding.<\/p>\n

<\/p>\n

It turns around with a Pick test<\/a>,pick up the center coordinates.<\/p>\n

<\/p>\n

As a result, I found that the bore pitch was 61 mm – 90 mm – 61 mm.<\/p>\n

I will prepare the boring head.
\nThe chip uses a thing for castings.<\/p>\n

<\/p>\n

With this scale it is possible to adjust the protrusion amount of the blade with 1\/1000 units.<\/p>\n

<\/p>\n

And, I prepare a cylinder bore gauge for measurement, too.<\/p>\n

And I do boring.My aim is \u03c6 49.00 mm.
\nI make \u03c6 48.995mm with boring.Then I make 49.000 by honing.<\/p>\n

<\/p>\n

The animation of a series of processes is this.<\/p>\n