Cutting of soft rubber (Ⅱ)

Cutting of soft rubber

(3) Tool and cutting parameters

① Tool material. The tool materials for cutting soft rubber are high speed steel and YG class cemented carbide.

② Geometric parameters of the tool. Because the hardness of soft rubber is very low, the elastic modulus is very small, the chip is cut from it, and the front Angle and back Angle of the tool are required to be large, and the wedge Angle is very small (20°~30 "), so that the tool is particularly sharp. Gamma in general. =45°~55, α. = 12 ~ 15

③ Cutting parameters. High speed steel tool, v=60~80m/min. Carbide tool, v=100~150m/min. ap=1~4mm, f=0.2~lmm/r

(4) Typical cutting tools for soft rubber

Cutting soft rubber tools, whether they are turning tools, milling tools, boring tools, planing tools and drills, they have several common characteristics, that is, large front Angle, large back Angle, small wedge Angle, and sharp blade.

(5) Problems that should be paid attention to when cutting soft rubber

① When cutting soft rubber, do not use oil for cooling and lubrication to prevent corrosion and deformation.

(2) When using the cutting type feed, the feed size (radial and depth ruler) should be mastered, and it is best to move the tool once to prevent the workpiece margin from being too small, the rubber elasticity is large, and it is not good to cut again, so that the size is not easy to control.

③ When the rubber plate is used as the blank, the clamped board should be flat, and the nails of the fixed rubber plate should not be nailed too tightly to prevent the deformation of the workpiece.

④ When using a mandrel or a set of clamping workpiece, the size change law of the workpiece should be mastered to

Ensure the dimensional accuracy of the workpiece.

⑤ The cutting speed during cutting should not be too high to prevent the cutting temperature from exceeding 150 ° C to soften the rubber. Should keep the tool sharp, found dull should be trimmed in time.

For further more, please contact Shungji knife.