Different products can only be processed by using different methods. It depends on what kind of products they are, and then they can be determined. The same is true for grinding machines. How do surface grinding machines process automobile camshaft? Let's find out!
The geometric accuracy of surface grinding machine refers to the movement accuracy and mutual position accuracy of each part under no load. It is impossible to make the machine tool accurate. There are always some unavoidable errors. This kind of error will be reflected to the workpiece in different degrees during the processing of the workpiece, which will affect the machining accuracy of the workpiece. Generally, there are radial and axial runout of spindle, straightness of moving parts such as worktable, mutual position error and transmission error of working parts.
The difference between automobile camshaft and common grinding is only in the shape of grinding cam. A six cylinder car camshaft has 13 cams and three or four bearing diameters. It consists of six intake cams, six exhaust cams and one pump cam along the same center. The intake and exhaust cams sometimes have different shapes, but in other engines involved they have slightly different contours.
Camshaft is made of special alloy cast iron, which is more widely used in the latter material at present. The cam is hardened after casting, but the hardness of bearing surface and gear should not be too high to facilitate turning.
The camshaft is supported by a good thimble eye. The operation is to turn the bearing diameter to a diameter of 0.040 larger than the specified size for rough grinding and fine grinding. The cam profile is directly ground after pouring. The casting is assumed to be 0.070 to 0.080 larger than the specified size of the camshaft. However, in the work, the grinding capacity of the non-circular and irregular shape of the casting can be increased to 1 / 8 in the cam profile.
After turning, the bearing is made in a unified, semi-automatic or special surface grinder. The operation of the grinder is similar to that of the ordinary cylindrical grinder. When the grinder is applied, the independent grinding wheel is installed to grind the four bearings to the size in one operation. This method can produce about 20 camshaft per hour. Therefore, the diameters of the four bearings are not equal, and their sizes are specified by multiple gears or micrometers.
If you want to know more about how the surface grinder processes automobile camshaft, I hope it can help you. If you want to know more about grinding machine, you can click the website page to browse!
On 2018-08-08 11:45:46
