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Surface grinder structure and grinding motion

There are many types of grinding machines, including surface grinders, cylindrical grinders, internal grinders, universal cylindrical grinders (also grind inner holes), gear grinders, thread grinders, guide grinders, centerless grinders (grinding circles) and tool grinders ( Grinding tools) and so on. Here we introduce the surface grinder and its movement.
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  1. Structure of surface grinder (taking M7120A as an example, where: M–grinding machine tool; 71–horizontal surface grinder; 20–table width 200mm; A–first major improvement.)

(1) Grinding wheel frame–Installing the grinding wheel and driving the grinding wheel for high-speed rotation, the grinding wheel frame can be moved manually or hydraulically along the dovetail guide rail of the sliding seat.

(2) Slider–Install the wheel frame and drive the wheel frame to move up and down along the column guide.

(3) Columns – support slides and grinding wheel frames.

(4) Workbench – The workpiece is mounted and driven by a hydraulic system for reciprocating linear motion.

(5) Bed body – support the workbench and install other components.

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(6) Coolant system–providing coolant (saponified oil) to the grinding zone

(7) Hydraulic transmission system – its composition is:

a. Power component–for the oil pump, supply hydraulic transmission system pressure oil;

b. Actuator – for the cylinder, to drive the movement of the table and other components;

c. Control elements – for various valves, control pressure, speed, direction, etc.;

d. Auxiliary components – such as fuel tanks, pressure gauges, etc.

Compared with the mechanical transmission, the hydraulic transmission has smooth transmission, overload protection, and can realize stepless speed regulation in a large range.
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  1. Surface grinding motion
    (1) Main motion – high-speed rotation of the grinding wheel.

(2) Feed movement

a. Longitudinal feed–the workbench drives the reciprocating linear motion of the workpiece;

b. Vertical feed–the movement of the grinding wheel in the depth direction of the workpiece;

c. Transverse feed–the movement of the grinding wheel along its axis.

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