The tool clamping apparatus of milling machine

1. Main demand

Do not beg very complex clamping apparatus commonly in treatment of numerical control milling, ask simple fixed position, clamp is OK only, the principle that its design is as same as clamping apparatus of general milling machine also, combine the characteristic that numerical control milling machines, here raises a few basic requirements:

. Wait for treatment face to be exposed adequately to make sure workpiece is in what all need finish in this working procedure outer, clamping apparatus should do open open as far as possible, because the safe distance that keeps certain answers between clamp orgnaization component and treatment face, cell of requirement clamp orgnaization can be small at the same time low, interference happens in order to prevent clamping apparatus and sleeve of milling machine main shaft or broach shell, cutting tool in machining a process.
. The installation azimuth to hold a part and department of machine tool coordinate and process designing coordinate fasten directional consistency, clamping apparatus should assure to realize directional installation on the machine tool, still ask harmonious spare parts locates certain coordinate maintains to contact between face and machine tool.
. The tigidity of clamping apparatus and stability are close friends. Do not use the design that clamp dot changes in machining a process as far as possible, when clamp changes to nod in must machining a process, want special attention to because change to clamp is nodded and destroy the fixed position precision of clamping apparatus or workpiece,cannot change.

2. The sort of commonly used clamping apparatus

Numerical control milling machines commonly used clamping apparatus to have the following kinds roughly:

. All-purpose built up fixture. When suiting to small lot is produced or be developed in small, small-sized workpiece is in aspirant travel milling machines numerical control milling machine.
. Special milling clamping apparatus. This is special for some or the fixture that design of similar a few workpiece makes, be in commonly year of crop bigger or otherwise of the blame when development but when use. Its structure is fixed, use the specific process at a specific spare parts only, stress of design of this kind of clamping apparatus is begged simplify, make production time shortens as far as possible.

. Multitask clamping apparatus. Can place many workpiece with fashionable dress, can reduce the number that change a knife, already facilitated one side is machined, assemble and unassemble at the same time workpiece, be helpful for shortening auxiliary time, improve productivity, the batch in suiting relatively is produced.
. Pneumatic or hydraulic pressure clamping apparatus. Suit the situation with bigger production lot, use other clamping apparatus to take a lot of work particularly again, painstaking work, can reduce a worker labor intensity and improve productivity, but structure of this kind of clamping apparatus is more complex, cost often very tall, and production cycle is longer.
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