數控加工零件的特點(diǎn)對夾具提出的要求
一是要保證夾具的坐標方向與機床的坐標方向相對固定;二是要協(xié)調零件和機床坐標系的尺寸關(guān)系。
One is to ensure that the coordinate direction of the fixture and the
coordinate direction of the machine tool are relatively fixed; the other
is to coordinate the size relationship between the parts and the
coordinate system of the machine tool.
除此之外,還要考慮以下幾點(diǎn):
In addition, we should consider the following points:
1)當零件加工批量不大時(shí),應盡量采用組合夾具、可調式夾具及其他通用夾具,以縮短生產(chǎn)準備時(shí)間、節省生產(chǎn)費用。
1) When the batch of parts is not large, modular fixture, adjustable
fixture and other general fixture should be used as far as possible to
shorten the preparation time and save production costs.
2)在成批生產(chǎn)時(shí)才考慮采用專(zhuān)用夾具,并力求結構簡(jiǎn)單。
2) consider the use of special fixtures in batch production and strive for simple structure.
3)零件的裝卸要快速、方便、可靠,以縮短機床的停頓時(shí)間。
3) the loading and unloading of parts should be fast, convenient and reliable, so as to shorten the pause time of machine tools.
4)夾具上各零部件應不妨礙機床對零件各表面的加工,即夾具要開(kāi)敞,其定位、夾緊機構元件不能影響加工中的走刀(如產(chǎn)生碰撞等)
4) The parts and components on the fixture should not interfere with the
machining of the Parts'surfaces, that is, the fixture should be open,
and its positioning and clamping mechanism components can not affect the
tool running (such as collision)