center hole grinder

Working principle of center hole grinding

Center hole grinding is a necessary process of cylindrical grinding. If there is no high-precision center hole, high-precision cylindrical grinding will be nonsense.

The center hole grinder is specially designed and manufactured to solve the problem that the cylindrical grinder cannot process high-precision workpieces due to the insufficient roundness accuracy of the center hole (center hole) of the workpiece. We are a professional center hole grinder manufacturer, which can ensure that the center holes of all workpieces can be grinded with high precision efficiently. At the same time, with the high-precision center hole processed by our center hole grinder as the guarantee premise, for the subsequent cylindrical grinding, it can be formed by grinding at one time without repeatedly grinding the top hole and repeatedly grinding the outer circle, which greatly improves the processing efficiency and part processing accuracy.

1.The cutting surface of the central hole is cross reticulated

If the workpiece is fixed, the grinding track consists of three movements: the rotation of the spindle, the revolution of the spindle around the axis of the central hole and the reciprocating movement of the spindle along the conical surface of the central hole.

2.Dressing of grinding wheel cone generatrix

Swing type grinding wheel dresser: the diamond pen moves along the conical surface bus of the grinding wheel, and swings with the intersection line of 30 ° with the center of the grinding wheel as the center, so as to reduce the dressing error.

3.matic centering of workpiece

During grinding, the workpiece can be fixed or rotated

It can process rotating body and non rotating body

4.Positioning mode

Positioning of the outer circle at the upper end of the lower central hole

Both ends are positioned with center holes

Advantages of center hole grinder:

1.When the external roundness of the three jaw chuck is insufficient, the central axis of the workpiece can be adjusted through the adjustment of the jaw, so as to obtain a high-precision central hole in the machining.

2.During the machining process, the workpiece rotates and the grinding head moves back and forth, so that after the machining, the center hole has ultra-high precision and at the same time, there are network cross grinding lines. These mesh cross grinding lines also have the function of oil bag, which can form a layer of permanent oil film between the central hole (top hole) and the fixed central top, prevent oil-free friction and prevent the top from jamming, so as to improve the surface accuracy of the central hole.

3.Large vertical structure and integral casting are adopted, which can carry higher and larger workpieces, so as to prepare for the later product transformation and compatibility with richer product lines.