Method for determining clamping force of CNC machining tool
When the cnc machining tool is designed with a clamping device, the determination of the clamping force includes three factors: the direction of the clamping force, the point of action and the size. So how do you determine the clamping force of a CNC machining tool?
1. The action point of the clamping force of the NC machining tool The clamping force action point refers to a small area where the clamping member is in contact with the workpiece. The problem of selecting the point of action is to determine the position and number of points of application of the clamping force in the case where the clamping direction has been determined. The selection of the clamping force point of action is the primary factor in achieving the optimum clamping state. ^ Reasonable selection of clamping force The following points must be observed:
The roughness of the surface of the 200 grinding surface is reduced from 2.0 to 1.1.
2. The direction of the clamping force of the CNC machining tool is related to the basic configuration of the positioning of the part and the direction of the external force of the workpiece. The following guidelines must be observed when selecting CNC tools:
1 The direction of the clamping force should help the positioning to be stable, and the main clamping force should be toward the main positioning base.
2 The direction of the clamping force should be beneficial to reduce the clamping force to reduce the deformation of the workpiece and reduce the labor intensity.
3 The direction of the clamping force should be the direction in which the workpiece is rigid. Since the stiffness of the workpiece in different directions is unequal, the different force-receiving surfaces are also deformed by the contact area. Especially when clamping thin-walled parts, it is more important to point the direction of the clamping force to the direction of the workpiece's rigidity.
3. CNC machining tools simplify the process and reduce production costs. In some applications, the surface quality of high-speed milling is comparable to that of grinding. High-speed milling can be directly used as the final finishing process. This simplifies the process and reduces the production cost, and its economic benefits are considerable.
4. The machining energy consumption of CNC machining tools is low, and the volume of the cutting layer material cut by unit power is significantly increased when the high-speed cutting of the knowledge-making resources is saved. For high-speed cutting of aluminum alloys such as Lockheed Aircraft, the spindle speed is from 4 000 1/… When the temperature is increased to 20,000, the cutting force is reduced by 30^, and the material removal rate is increased by three times. The material removal rate per unit of power can reach 130?160 ((1) is better than 'Tear>, while ordinary milling is only 30'). Due to the high removal rate, low energy consumption, the workpiece's in-time
Short, increased energy and equipment utilization, and reduced the proportion of cutting processing in manufacturing system resources. Therefore, high-speed cutting meets the requirements of a sustainable development strategy.
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