精密機(jī)械加工工藝外文翻譯-其他專業(yè)(編輯修改稿)
2025-02-24 01:04 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 basic Clamp 共 5 頁(yè) 第 6 頁(yè) The original force into a clamping force through the clamping body to the many institutions in the clamping wedge oblique spiral and by their eccentric bination of the most mon application of clamping. (A) Wedge Clamp Wedge used as ponents or transmission of the clamping device clamping body known as the Wedge Clamp. Wedge clamping directly the oblique wedge of the selflocking conditions are:Wedge angle smaller than the work piece Wedge Wedge and folders between the concrete and the friction angle. Namely: a f1+f2 In order to ensure a reliable selflocking manual clamping generally take a =6 176。~ 8 176。. Using pneumatic or hydraulic device drivers do not need the selflocking oblique wedge it is desirable to a =15 176。 ~35 176。. Wedge clamp is simple in structure than by large selflocking features such as performance it is widely available. (B) Helical Clamp Used as intermediate screw transmission ponents are collectively referred to as the clamping screw clamping body ans. Because of its simple structure reliable clamping mon good and as a result of the small helix angle spiral of selflocking clamping body good clamping force and the clamping itinerary are larger fixture on manual with the most a clamping body. 1. Simple screw clamp body The simplest spiral as a result of the direct use of clamping bodies pressed workpiece screw head so easy to damage the surface of the work piece under pressure or driven rotating work piece. So often in the head with swinging Press. Press with the work piece as a result of friction between the Press and the torque is greater than the friction between the screw torque screw together with the Press will not rotate. Clamping action slow timeconsuming loading and unloading the work piece is a single spiral Another drawback of the Clamp. To overe this shorting the rapid clamping bodies can be. 2. Clamp screw plate Institutions in the clamping the use of spiral plate is very mon mon structure of the spiral structure of a typical plate size has been standardized the designer can refer to the relevant national standards and fixture design manual design. (C) Eccentric Clamp With eccentric pieces, directly or indirectly, the work piece clamping body, known as the eccentric clamping body. There are two types of eccentric pieces, that is, and the curve 共 5 頁(yè) 第 7 頁(yè) of eccentricity eccentric circle, which, due to a round eccentric structure is simple and easy to manufacture and is widely used. Eccentric clamping processing is easy to operate, rapid clamp, the disadvantage of clamping force and clamping trip are small. Not generally used in cutting force, vibration small there is no centrifugal force of the impact of the processing. 1. Round the working principle of eccentric 2. Eccentric clamping round trip and paragraph 3. Eccentric selflocking condition of a≤ j1+ j2 Was derived: f1 ≥2e / D When f = hours, e / D≥ 20, when f = pm, e / D ≥14 Fourth institutions centering clamping When the work piece is processed by the central element of surface (axis, the center plane, etc.) for the base process in order to enable the base to reduce the positioning error of coincidence to be used centering clamping body.
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