Carbide ball grinding equipment at the present time the orbits of the finishing time is long, large dosage of steel ball and low grinding efficiency, the purpose of the utility model aims to provide a kind of hard alloy ball grinding disc, through the improvement of grinding plate of track structure, shorten the track nap time, save steel consumption, and further improve the grinding efficiency of tungsten carbide balls.

In order to achieve the above purpose, the utility model provides a hard alloy ball grinding disc, including an upper grinding disc and a lower grinding disc used with it; The lower grinding disc design has at least two concentric circular orbits that coincide with the center of the lower grinding disc; Each track is designed with a v-groove; The two inner sides of the v-shaped groove face an arc groove with an equal chord length; The center of the circular arc groove coincides with the center of the processed carbide ball, and the radius of the circular arc groove is the same as that of the processed carbide ball.

Using the above carbide ball grinding wheel to be machining carbide ball grinding, semi-finished products, will first grinding and grinding disc under the distribution of the plate is installed on the grinding machine grinding plate and the lower grinding plate, and by using the circular arc groove corresponding to the steel ball finishing orbit, after being met the requirement of the orbital repair, will be machining carbide ball semi-finished grinding disc under load orbit, grinding disc for grinding so as to exert pressure to move up and down the grinding disc counterclockwise involution golden ball grinding process.

In the optimal implementation mode, in order to ensure an ideal contact area between the alloy sphere to be processed and the arc orbit, the chord length of the arc groove is 0.3 ~ 0.35 times of the diameter of the carbide sphere to be processed.

In the optimal implementation mode, in order to separate the two arc tracks and ensure the formation of three-point contact in the processing process, the lower end of the v-shaped groove is provided with a scavaging groove connected with the v-shaped groove, so that even if the arc track is worn for a period of time, the two arc tracks will not be connected, thus extending the service life of the arc track.

To implement the optimal selection of way, in order to guarantee the alloy to be sphere in the machining process inside and outside the orbit of the linear velocity difference greater since the corner.

In the optimal implementation mode, the upper grinding disc is designed with observation holes. During the grinding process, the carbide ball can roll freely in the observation hole to facilitate the observation of its grinding state.

In the preferred embodiment, the upper grinding plate is designed with at least four positioning screw holes for fixing the upper grinding plate on the upper grinding plate of the grinding machine; The locating screw holes are distributed on the locating circle of the upper grinding disc; The positioning circle is designed according to the center of gravity of the upper grinding disc; The observation hole is located outside the locating circle of the upper grinding disc.

In the optimal implementation mode, the axes of the upper grinding disc and the lower grinding disc coincide; The upper grinding disc and the lower grinding disc are both rings and have the same inner and outer diameters.

Described implementation approach, the optimal selection of the grinding plate design has three track, the mill plate along the radial direction by three orbit radius of circular arc groove outside introversion, in turn, increases, so in different size of tungsten carbide ball, without grinding disc replacement, you just need to change different tracks and to save the time for replacing grinding disc, and avoid change caused by different grinding disc repeat positioning accuracy is poor. On the premise of ensuring the equal height of the three types of alloy ball to be processed after loading into orbit, the grinding processing of three different types of alloy ball can be realized at the same time. This grinding method is also applicable to the design of carbide ball grinding disk with more than three orbits.

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