A grinder is a production machine tool used in manufacturing, in which the grinding wheel is installed in the tool holder and the workpiece is fixed on the worktable. When the operation starts, it removes unnecessary materials to obtain the desired surface Smooth finish, correct size and accurate workpiece shape.
The cylindrical grinding process is used to shape the outer surface of the workpiece. The cylindrical grinding process is mainly used to grind the surface of cylindrical objects. The object will rotate around an axis, the surface of the object to be ground will be concentric with this axis, and the workpiece will rotate around this axis.
1. What is the main movement of the cylindrical grinder
The cylindrical grinder is composed of a bed mounted on the base, and the working table below is mounted on the bed, reciprocating on the X-axis on the bed rail. The upper worktable of the cylindrical grinder is installed on the lower worktable and can be rotated in the longitudinal plane. The headstock of the cylindrical grinder with a drive system for the workpiece (which can be rotated in some designs) and a fixed tailstock are mounted on the upper table. The tailstock can be moved along the length of the watch and locked in the desired position.
The grinding wheel head of a cylindrical grinder with a separate motor (which can be rotated in some designs) is mounted on the base and moves in the transverse direction (toward or away from the workpiece) to provide the depth of cut
The cylindrical grinder has a coolant system that can flood the cutting area during the grinding process. The reciprocating movement of the table on the longitudinal (X) axis is hydraulic, and the table speed is infinitely variable. You can use the joystick to change the speed of the workbench movement or stop the movement.
There are two movable stoppers on the front of the cylindrical grinder table, which can be moved and locked at any position. The hydraulic valve for reversing the reciprocating direction of the worktable is located between the two stoppers, and during the grinding process, the stopper on the moving worktable hits the hydraulic valve to reverse the direction. There is a need to place the two stoppers in such a way that once the length of the workpiece passes the grinding wheel, the movement of the table will be reversed.
2. The external cylindrical grinder is manually operated for grinding
The predetermined cutting depth can be synchronized with the reversal of the worktable direction. Cylindrical grinding is also called "center type" grinding, because the cylindrical grinding workpiece is a shaft with a precision center on both faces and is installed between the centers (with a drive bracket) during the grinding process. Grind the outer diameter (OD) of the long and short shafts, either single diameter, multiple diameters, or taper. Keep the concentricity of all diameters and tapers on the shaft within tolerance.
A cylindrical grinding machine is a grinding method used to shape the inner and outer diameters of workpieces. Some manually controlled external cylindrical grinders can be designed to have only the inner diameter grinding function or only the outer diameter grinding function. Cylindrical grinding machines can produce cylindrical workpieces of various shapes under manual or automatic control, but the original workpiece must have at least one central axis so that it can rotate concentrically during processing. This includes but is not limited to cylindrical shapes such as cams and crankshafts.
Cylindrical grinding machines must have four key movements: First, the workpiece must continuously rotate. Secondly, the grinding wheel must rotate continuously. Third, the grinding wheel moves forward and backward toward the workpiece. Then move the workpiece relative to the grinding wheel. Most cylindrical grinders use these four movements to complete the grinding process, but there are still some grinders that only use three of them for grinding.
For cylindrical grinders, the spindle bearing of the grinding wheel is also an important part, which requires attention. In the mechanical field, the bearing is an essential mechanical component that restricts the relative motion within the required range of motion, and it is responsible for reducing the friction between the moving parts.
