Determination of the direction of motion of CNC machine tools
2022-09-19 05:05:16
(1) Movement of the Z coordinate The movement of the Z coordinate is determined by the principal axis that transmits the cutting force, and the coordinate axis parallel to the spindle axis is the Z coordinate. For the spindle such as lathe and grinding machine, the workpiece rotates; for the milling machine, the drilling machine, the boring machine and other spindles with the tool rotation, the coordinate axis parallel to the main axis is the Z coordinate. If the machine does not have a spindle (such as a planer), the Z axis is perpendicular to the workpiece loading surface.
The positive direction of the Z coordinate is the direction that increases the distance between the workpiece and the tool. For example, in the drill collar machining, the direction of drilling and breaking into the workpiece is the negative direction of the Z coordinate, and the exit is the positive direction.
(2) The X coordinate of the X coordinate is horizontal, which is parallel to the mounting surface of the workpiece. This is the primary coordinate for motion within the tool or workpiece positioning plane. For machine tools where the workpiece is rotating (such as lathes, grinders, etc.), the direction of the X coordinate is in the radial direction of the workpiece. The direction in which the tool leaves the center of rotation of the workpiece is the positive X-axis direction. For machine tools with tool rotation (such as milling machines, boring machines, drilling machines, etc.), if the Z axis is vertical, when viewed from the main axial column of the tool, the positive direction of the X motion points to the right, as the Z axis (spindle) is horizontal, When viewed from the direction of the main axial workpiece, the positive direction of the X motion points to the right.
(3) The Y coordinate of the Y coordinate is perpendicular to the X and Z coordinate axes. The positive direction of the Y motion is judged according to the positive direction of the X and Z coordinates, according to the right hand right angle Decathlon coordinate system.
(4) Rotational motions A, B, and C
A, B, and C correspondingly represent rotational motions whose axes are parallel to the X, R, and Z coordinates. The positive directions of A, B, and C, respectively, indicate the direction in which the right-handed threads advance in the positive X, Y, and Z coordinates.
(5) Additional coordinates If there are coordinates other than the X, Y, and Z main coordinates, they can be specified as U, Y, and W, respectively. If there is a third set of motions, specify P, Q, and R, respectively.
(6) For the machine tool in which the workpiece is moving in the opposite direction during the movement of the workpiece instead of the tool movement, the above-mentioned provisions for the movement of the tool must be arranged in reverse. Use a letter with a '', such as +X, to indicate that the workpiece is moving relative to the tool in the forward direction. A letter without a '', such as +X, indicates a forward motion command of the tool relative to the workpiece. The direction of motion indicated by the two is just the opposite. For programmers and craftsmen, only the direction of motion without "'" is considered.
(7) The direction of the spindle rotation motion refers to JB3208—83 “Code for preparation function G and auxiliary function M in the punching block program format of CNC machine toolsâ€.
The positive direction of the Z coordinate is the direction that increases the distance between the workpiece and the tool. For example, in the drill collar machining, the direction of drilling and breaking into the workpiece is the negative direction of the Z coordinate, and the exit is the positive direction.
(2) The X coordinate of the X coordinate is horizontal, which is parallel to the mounting surface of the workpiece. This is the primary coordinate for motion within the tool or workpiece positioning plane. For machine tools where the workpiece is rotating (such as lathes, grinders, etc.), the direction of the X coordinate is in the radial direction of the workpiece. The direction in which the tool leaves the center of rotation of the workpiece is the positive X-axis direction. For machine tools with tool rotation (such as milling machines, boring machines, drilling machines, etc.), if the Z axis is vertical, when viewed from the main axial column of the tool, the positive direction of the X motion points to the right, as the Z axis (spindle) is horizontal, When viewed from the direction of the main axial workpiece, the positive direction of the X motion points to the right.
(3) The Y coordinate of the Y coordinate is perpendicular to the X and Z coordinate axes. The positive direction of the Y motion is judged according to the positive direction of the X and Z coordinates, according to the right hand right angle Decathlon coordinate system.
(4) Rotational motions A, B, and C
A, B, and C correspondingly represent rotational motions whose axes are parallel to the X, R, and Z coordinates. The positive directions of A, B, and C, respectively, indicate the direction in which the right-handed threads advance in the positive X, Y, and Z coordinates.
(5) Additional coordinates If there are coordinates other than the X, Y, and Z main coordinates, they can be specified as U, Y, and W, respectively. If there is a third set of motions, specify P, Q, and R, respectively.
(6) For the machine tool in which the workpiece is moving in the opposite direction during the movement of the workpiece instead of the tool movement, the above-mentioned provisions for the movement of the tool must be arranged in reverse. Use a letter with a '', such as +X, to indicate that the workpiece is moving relative to the tool in the forward direction. A letter without a '', such as +X, indicates a forward motion command of the tool relative to the workpiece. The direction of motion indicated by the two is just the opposite. For programmers and craftsmen, only the direction of motion without "'" is considered.
(7) The direction of the spindle rotation motion refers to JB3208—83 “Code for preparation function G and auxiliary function M in the punching block program format of CNC machine toolsâ€.
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