The difference between G54 and G92 of CNC machine tools

G92 is the machine tool to a certain point and then use G92 to set the coordinates.

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g91g28z0.

m6t2m3s1600

g92z0.

m98p7001

m5 g49n2

G54 is the coordinate recorded in the coordinate system G54 of the machine tool.

program_name =c1)

tool_name : d10)

tool_diam = 10., r=

g90 g80 g17 g40 g54 g49s15000 m03

G92 goes to a certain point and then sets: G54 is the coordinates in G54!

If you can't tell the difference, don't show g54 and g92 at the same time in the program! It's easy to go wrong!

g54 is the coordinate system of the workpiece;

G92 is the threaded cycle instruction;

g54 is selected for the workpiece coordinate system;

g92 is the change of the coordinate system of the workpiece;

In the FANUC CNC lathe system, the G94 format is as follows:

After G94 is executed, the trajectory of the tip movement is rectangular or trapezoidal (4 edges), 2 edges are fast moving, and the other 2 edges are the speed of G01 (cutting machining).

The direction indicated by the arrow is the direction in which the tip of the knife moves, and the coordinates of the diagonal point are the X and Z coordinates behind G94.

1. Programming and program carrier. The CNC program is the work instruction of the CNC machine tool to automatically process parts. The program carrier is a kind of storage carrier used to store the programmed program for easy input to the numerical control device.

2. an input device. The function of the input device is to transmit and store the numerical control ** on the program carrier (information carrier) into the numerical control system.

3. Numerical control device. CNC devices are the core of CNC machine tools. Its role is:

Take out or accept one or several sections of numerical control machining program sent by input device from internal memory, compile by the logic circuit or system software of numerical control device, after operation and processing, output several kinds of control information and instructions, control the work of each part of the machine tool, make it carry out the specified orderly movement and action.

4. Drive device and position detection device. The function of the driving device is: to receive the stall information from the numerical control device, after the power amplification, in strict accordance with the requirements of the instruction information to drive the moving parts of the machine tool, in order to process the parts that meet the requirements of the drawing.

The function of the position detection device is: the actual displacement of each coordinate axis of the CNC machine tool is detected, and the feedback system is input.

1. The setting time is different.

g92 is the coordinate system set in the program.

G54 and G59 are coordinate systems that are set before processing.

2. Use differently.

The G92 instruction is set and selected by the program to add the core brother coordinate system, and the set machining coordinate system origin is related to the position of the current known tool, and the position of the machine tool origin in the machine tool coordinate system is changed with the difference of the current tool position.

Thread cutting cycle G92: In the FANUC CNC system, there are two processing instructions for CNC lathe thread cutting cycle machining: G92 straight cutting and G76 oblique cutting.

Due to the different feeding methods of cutting tools, these two processing methods are different, and their programming methods are also different, and the machining accuracy of the thread section after the workpiece is machined is also different.

Instruction description: G92 is the modal G instruction;

Cutting starting point: the starting position of the stool with thread interpolation gives way;

End of cut: the end position of the thread interpolation;

X: Absolute coordinate of the x-axis of the end point of cutting, unit: mm;

u: the difference between the absolute coordinates of the end point of cutting and the x-axis of the starting point, unit: mm;

Z: Absolute coordinates of the Z-axis of the end point of cutting, unit: mm;

w: the difference between the absolute coordinates of the end point of cutting and the z-axis of the starting point, unit: mm;

r: the difference between the absolute coordinates of the x-axis of the starting point of cutting and the end of cutting (radius value), when the sign of r and u is inconsistent, r u 2 is required, unit: mm;

f metric thread pitch, value range, f command value is maintained after execution, input can be omitted;

I inch thread number of teeth per inch, take the value range of teeth inches, I command value is maintained after execution, can omit input;

j: the amount of movement in the direction of the minor axis when the thread is tailed, the value range is 0 units: mm), without direction (according to the process.

The position of the starting point of the sequence automatically determines the direction of tail retreat), modal parameters, if the minor axis is the x-axis, then the value is specified for the radius,;

k: the length of the thread in the direction of the long axis when the tail is withdrawn, the value range is 0 unit: mm). Without direction, modal parameters, e.g. the long axis is the x-axis, the value is specified for the radius;

l: the number of heads of the long thread, the range of this value is: 1 99, modal parameter. (Defaults to a single-head thread when L is omitted).

The G92 command can complete the machining of one thread in multiple feeds, but it cannot realize the machining of two consecutive threads, nor can it process the end thread. The definition of the G92 command thread pitch is the same as that of G32, which refers to the displacement of the main shaft in one rotation of the long axis (the displacement of the x-axis is valued by radius).

The pitch of the taper thread refers to the displacement of the major axis of the spindle (the displacement of the x-axis is according to the radius value), and when the absolute value of the Z-axis coordinate difference between point b and point C is greater than the absolute value of the coordinate difference of the x-axis (radius value), the z-axis is the long axis; Conversely, the x-axis is the long axis.

1. The front G41 is along the direction of movement of the tool, and the tool is on the right side of the workpiece. G42 is to follow the direction of movement of the tool, and the tool is on the left side of the workpiece.

2. G41 is used for positive boring and G42 is used for reverse boring.

3. Turning machining center: on the basis of ordinary CNC lathes, C-axis and power head are added, and more advanced machine tools also have a tool magazine, which can control X, Z and C three coordinate axes, and the linkage control axis can be (X, Z), (X, C) or (Z, C).

4. Due to the addition of the C-axis and the milling power head, the processing function of this CNC lathe is greatly enhanced, in addition to rough general turning, it can also carry out radial and axial milling, surface milling, drilling of holes and radial holes where the center line is not in the center of rotation of the part.

Workpiece coordinate system selection (G54-G59).

Format g54 x z ; 2.Function By using the G54 G59 command, assign an arbitrary point of the machine's coordinate system (workpiece origin offset value) to the parameter of 1221 1226 and set the workpiece coordinate system (1-6).

This parameter corresponds to g ** as follows: Workpiece Coordinate System 1 (G54) - Workpiece Origin Returns Offset Value --- Parameter 1221 Workpiece Coordinate System.

1. The setting time is different.

G92 is the coordinate system set in the program, while G54 and G59 are the coordinate systems set before processing.

2. Use differently.

The G92 instruction is set and selected by the program, and the origin of the machining coordinate system is related to the position of the current tool, and the position of the origin of the machining machine in the machine tool coordinate system is changed with the difference of the current tool position.

Although G92, G54 and G59 are all set workpiece coordinate systems, G92 is the coordinate system set in the program, while G54 and G59 are set coordinate systems before machining.

2) The difference between G92 and G54 G59.

Both the G92 command and the G54 G59 command are used to set the coordinate system of the workpiece machining, but there is a difference in use. The G92 instruction is set and selected by the program, and the origin of the machining coordinate system is related to the position of the current tool, and the position of the machining origin in the machine tool coordinate system is changed with the difference of the current tool position.