What is the difference between internal grinder and external grinder?

What is the difference between internal grinder and external grinder?

Internal grinding machine is mainly used for grinding cylindrical, conical or other shape lines developed into the surface of the inner hole and its end face.

A grinding machine for processing cylindrical, conical or other shape lines of a workpiece forming the inner hole surface and its end face. Internal grinding machine is divided into ordinary internal grinding machine, planetary internal grinding machine, centerless internal grinding machine, coordinate grinding machine and special purpose internal grinding machine. According to the arrangement of the sand wheel shaft, the internal grinder has horizontal and vertical points.

① Common

The chuck mounted on the spindle of the head frame holds the workpiece for circular feed movement, the table drives the grinding wheel frame to make longitudinal reciprocating movement along the bed guide rail (see machine guide rail), and the head frame makes transverse feed movement along the sliding saddle (see machine tool). The head frame can also be turned around the vertical axis at an Angle to grind the cone hole.

② Planet

When working, the workpiece is fixed, and the grinding wheel rotates around the axis of the machined hole in addition to rotating around its own axis at high speed to achieve circular feed, which is suitable for grinding large workpieces or workpieces that are not suitable for rotating such as internal combustion engine cylinder block.

③ Centerless

When working, the outer circle of the workpiece is supported on the roller or supporting block, and the end face of the workpiece is attracted by the magnetic chuck and driven to rotate, but it can float slightly to ensure the concentricity of the inner and outer circles. The grinding wheel speed of small internal grinding machine can reach hundreds of thousands of revolutions per minute. The internal grinder used in mass production requires a higher degree of automation, and the size can be automatically controlled by plug gauge or micrometer during the grinding process.

Cylindrical grinding machine is a grinding machine for processing the outer surface and the end face of the shaft shoulder formed by cylindrical, conical or other shape elements; Widely used, can process a variety of cylindrical conical outer surface and shaft shoulder end grinding machine.

The main machine is composed of the bed, the head, the tail, the grinding head, the transmission dust suction device and other components. Head, grinding head can turn Angle, used for grinding thimble and roller chamfering special fixture.

The structure of the external grinding machine is composed of the bed, the head, the tail, the grinding head, the transmission dust suction device and other components. The head, the grinding head can turn the Angle, the special fixture for grinding the thimble and roller chamfering, the dynamic balancing frame, the roller detector three parts are ordered by the customer.

Surface Grinding Machines

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