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The method and skill of nc machine tools of knife

by:Mingquan Machinery     2020-04-20
Nc machine tools to the method and skill of the knife knife is the most basic of numerical control machine, which is the most basic, the knife is to determine the degree of precision of processed parts.

how to determine the machine tool coordinate system?

why the knife? Of cutter is the purpose of your coordinates and the coordinates of your parts, machine tool, in this way can we start machining or you not knife, start the machine will hit a knife, because your machine is not the same as the coordinates and workpiece coordinate. After the workpiece and cutting tool is installed, use method of trial cut knife, of cutter operation according to the following steps: 1) To return to zero ( Refer to the above back to the reference point)

2) X, y direction of cutter

1. The workpiece through the fixture on the workbench, the clamping, the workpiece of four sides should be set aside for the position of the knife. 2. Starting the spindle rotation at a moderate speed, fast moving workbench and spindle, let the knife fast moving close to have a safe distance from the left side of the workpiece position, and then reduce speed move to close to the left side of the workpiece. 3. Near the artifacts to fine-tuning operations ( General use 0. 01 mm to near) To slowly close to the left of the workpiece and cutting tool make knives happens to come into contact with the workpiece on the left side of the surface ( Watch, listen to the cutting sound, see cut marks, chip, as long as one of the case indicates that the tool in contact with the workpiece) , return to return zero. 01mm。 Write down at this point the X coordinate values shown in the machine tool coordinate system,

240. 500, etc. And the relative coordinates are zero.

4。 Along the Z direction is return to the surface above, use the same method is close to the workpiece on the right side, jot down at this point the X coordinate values shown in the machine tool coordinate system, such as. . . 60. 400, etc. And the relative coordinates are zero. 5. On the basis of available workpiece coordinate system origin coordinate values for X - in the machine tool coordinate system 60. 400/2 = - 30. 200. In addition to the relative coordinate values of 2 center coordinate values for X direction. 6. Move to the center point, reset. 7. Input relative data: Settings - Relative zero - X zero - G54 - The actual coordinates entered G54 machine tool and the workpiece coordinate system X. 其中。 3) Z to knife knife ( Two kinds of methods) The first method: 1. Remove the tool quickly to artifacts. 2. Starting the spindle rotation at a moderate speed, moving workbench and spindle, let the tool moving close to have a safe distance from the surface of the workpiece on the position, and then reduce speed mobile makes tool face close to the workpiece surface. 3. Near the artifacts to fine-tuning operations ( General use 0. 01 mm to near) , let the tool face slowly close to the surface, make the tool face is bumping on the workpiece surface, then the Z axis to raise 0. 01 mm, write down the Z value of the machine tool coordinate system, such as. . . 140. Such as 400, the machine tool coordinate system in the Z coordinate values for - 140. 400. The second way: in order to prevent the knife cut the workpiece surface, also can be used between cutter and workpiece gauge block method of cutter. But at the moment to Z to the data set, consideration should be given thickness gage block 50 mm. Such as write down Z value of the machine tool coordinate system, such as. . . 140. Such as 400, the machine tool coordinate system in the Z coordinate values for - 140. 400 - 50 = - 190. 400. Input relative data, the cutting tool compensation - Knife repairing table 4) Inspection, inspection of cutter is correct, this step is critical
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