A kind of press forming mold and press forming method of grinding wheel segment

Abstract

The invention relates to a press-forming mold and a press-forming method for a grinding wheel segment. The press-forming mold includes a mold frame, and the mold frame has an arc-shaped cavity extending along the vertical direction and adapted to the arc of the corresponding grinding layer. The press-forming mold also Including the upper arc-shaped indenter and the lower arc-shaped indenter assembled in the arc-shaped mold cavity by sliding guides during use, the upper-arc-shaped indenter, the lower-arc-shaped indenter and the arc-shaped die on the section perpendicular to the up-down direction The cross-sectional shape of the cavity is the same as the cross-sectional shape of the grinding layer. The present invention provides a pressing molding mold which can save raw materials when pressing and forming grinding wheel segments with special-shaped cross-sections, and can ensure uniform axial and radial density when pressing grinding wheel segments with thicker axial and radial thicknesses. Compression molding method.

Description

technical field [0001] The invention relates to a press forming mold and a press forming method of a grinding wheel segment. Background technique [0002] Such as figure 1 As shown, the grinding wheel includes a grinding wheel base 2 and a grinding layer 1 fixed on the grinding wheel base. The grinding layer is generally formed by pressing, drying, and sintering superhard abrasives. The pressing forming method of the grinding layer is divided into the integral pressing method And the block pressing method, the overall pressing method is suitable for the grinding layer with a small size, the block pressing method is suitable for the grinding layer with a large size, and the block pressing method refers to the loose molding material being pressed into multiple grinding wheels Each grinding wheel segment is finally spliced ​​into an annular grinding layer. In the grinding layer pressing process, it is necessary to use a supporting pressing molding die. An existing pressing mo...

AI Technical Summary

Problems solved by technology

The problem with the existing forming dies is that the existing forming dies are more suitable for grinding layers with uniform radial thickness and not too thick, but not suitable for grinding layers with too thick radial thickness or radial thickness. Inhomogeneous surface grinding layer

When the grinding wheel segment is pressed in the axial direction, if the axial thickness of the grinding layer is greater than twice the radial width of the grinding layer, the density at both ends will be high in the thickness direction of the grinding wheel, and the density in the middle will be small, resulting in grinding wheel grinding. During the grinding process, a series of problems such as unstable wear, unstable machine tool compensation, low durability of the grinding wheel, and poor surface quality of the workpiece are prone to occur; In the radial direction of the grinding wheel, the superhard grinding wheel is also easy to form a situation where the density at both ends is high and the density in the middle is small, resulting in a series of problems that the grinding wheel segments are easily pressed along the axial direction during the grinding process of the grinding wheel

Images