PEEK (Polyether Ether Ketone) Plastic CNC Turning Skills

How to properly handle PEEK material it, the most common processing methods - turning to tell you, according to the processing of PEEK material selection of processing tools of different brands. Generally available YW1 or YW2 general-purpose carbide tools, diamond tools are better. The hardness and stiffness of high-speed steel (white steel cutter) is too low, easy to wear. Use coolant during machining to reduce wear and heat transfer; otherwise, the high temperature generated by the friction between the tool and the end face of the product during machining will cause the material to melt.

For processing thin-walled parts, due to its poor rigidity and weak strength, if it is directly clamped with the jaws of the three-jaw chuck, it is very easy to produce deformation, increasing the shape error of the parts, which in turn affects the circumferentiality of the parts. Parts can not be guaranteed. Therefore, when processing thin-walled products, clamping methods such as open-ended sleeves or spring collets should be used. It is also possible to change the direction of the action of the fastening force, and change the radial clamping to axial clamping, that is, some platen tools are used for clamping.

Reasonable choice of cutting parameters, cutting parameters have the greatest impact is the amount of tool travel, so cutting thin-walled sleeve should reduce the amount of tool travel and cutting speed. Processing peek material, appropriately increase the front angle, you can make the lathe sharp, smooth chip removal, reduce the friction between the cutting and the front face, reduce the cutting force and cutting heat. Appropriate increase in cutting edge inclination can increase the actual front angle of the lathe, reduce the arc of the cutting edge and improve the sharpness of the tool.

Therefore, the cutting force and cutting heat are reduced. According to the characteristic that the axial bearing capacity of the thin-walled sleeve is larger than the radial bearing capacity, appropriately increasing the primary deflection angle can reduce the counterforce and the deformation of the workpiece. Appropriately increasing the secondary deflection angle can reduce the friction between the secondary cutting edge and the workpiece and reduce the cutting heat. Appropriately reducing the radius of the tool tip arc can reduce the counterforce and reduce the deformation of the workpiece, but it should not be too small. Too small will affect the surface roughness of the workpiece and reduce the tip heat dissipation area.

According to the thin-walled sleeve axial bearing capacity is greater than the radial bearing capacity of the characteristics of the main deflection angle can be appropriately increased to reduce the counterforce and reduce the deformation of the workpiece. Appropriately increasing the secondary deflection angle can reduce the friction between the secondary cutting edge and the workpiece and reduce the cutting heat. Appropriately reducing the radius of the tool tip arc can reduce the counterforce and reduce the deformation of the workpiece, but it should not be too small. Too small will affect the surface roughness of the workpiece and reduce the tip heat dissipation area.

Appropriately increasing the secondary deflection angle can reduce the friction between the secondary cutting edge and the workpiece and reduce the cutting heat. Appropriately reducing the radius of the tool tip arc can reduce the reaction force and reduce the deformation of the workpiece, but it should not be too small. Too small will affect the surface roughness of the workpiece and reduce the tip heat dissipation area.