What conditions do the clamping devices used for precision parts processing also meet?

The technology of precision parts processing is improving faster and faster, indicating that the scope of application is more and more extensive, and the precision of precision parts processing is now very high, because the quality of good precision parts is still low. Encounter the overall processing equipment is very complete, and now the perfect processing conditions for precision parts are the effect that many manufacturers want, and the performance of precision parts processing is still very stable and complete.
In the process of precision parts processing, in addition to the main processing equipment, there will definitely be some auxiliary devices, and fixture devices are indispensable. In order to meet the prerequisites for precision parts processing, the fixtures used must also have some basic requirements.
First of all, the fixture device for precision parts processing must have proper clamping force. The so-called proper means not only to ensure that the position of the workpiece is stable and the vibration is small during the entire processing process, but also that the workpiece does not produce Excessive clamping deformation. Secondly, its manufacturability must be good in order to better cooperate with the completion of precision parts processing. It is required that the complexity of the clamping device should be compatible with the production program. Under the premise of ensuring production efficiency, its structure should be simple and easy to manufacture and maintain.
There is also good usability. The operation of the clamping device used in the processing of precision parts should be convenient, safe and labor-saving, and provide a stable foundation for the completion of the entire processing process. With reference to the above-mentioned requirements, the clamping mechanisms that are combined with oblique wedge, spiral, eccentric and other components are more commonly used at present. This kind of precision parts processing clamping device adopts the inclined wedge as the force transmission element or clamping element. When the inclined wedge is directly used for clamping, when the angle of rise of the inclined wedge is smaller than the angle between the inclined wedge and the workpiece, or between the inclined wedge and the clamping body Self-locking occurs when the sum of the friction angles.
In order to ensure the reliability of self-locking, the inclined wedge of the clamping device is driven by air pressure or hydraulic device; at the same time, this design also conforms to the characteristics of simple structure, large force increase ratio, and good self-locking performance. Therefore, it is used in precision parts processing. Widely used in the process.