What is the difference between CNC lathe G02 and G03, and what is the difference between it?

Here's how to distinguish it:

1. Look at the upper half of the drawing (shaft), if it is convex is G03, and if it is concave, it is G02.

2. Look at the tool holder, CNC lathe.

For the front turret, G02 processes a counterclockwise arc, and G03 processes a clockwise.

Arc, figuratively said that G03 processes the convex arc, and G02 processes the concave arc, provided that the CNC lathe front tool holder is used.

3. Right-hand Cartesian coordinate system.

Judgment, clockwise direction arc interpolation G02 and counterclockwise circular interpolation G03 direction are based on the right-hand Cartesian coordinate system, first determine the positive direction of the Y axis, and then judge the positive direction of the X axis from the positive direction of Y to the negative direction, and then judge the direction of G02 and G03 in the XZ plane is already OK, the front turret Y axis positive direction is downward, and the rear turret Y axis positive direction is towards the upper part.

Two methods: 1. G02 for concave arc according to the drawing, G03 for convex arc (limited to CNC lathes, the formula is "2 concave, 3 convex"; 2. According to the outline of the drawing, only look at the upper part of the axis and go around the contour clockwise according to the feed direction of the tool for G02 and G03 counterclockwise; There is a third one, forget it.

G02 is the arc interpolation instruction (clockwise rotation) in the CNC machining technical instruction.

CNC machining programming methods are divided into manual (manual) programming and automatic programming. Manual programming, the entire content of the program is written by manual according to the instruction format specified by the CNC system. Automatic programming, that is, computer programming, can be divided into automatic programming methods based on language and drawing.

However, regardless of the automated programming method, it requires the appropriate hardware and software.

It can be seen that the realization of CNC machining programming is the key. But programming alone is not enough, CNC machining also includes a series of preparations that must be done before programming and aftercare after programming.

Development Background

The initial idea of CNC machine tools, in 1952, the Massachusetts Institute of Technology developed a three-coordinate CNC milling machine. In the mid-50s, such CNC milling machines were used to process aircraft parts. In the 60s, CNC systems and programming work became more and more mature and perfect, CNC machine tools have been used in various industrial sectors, but the aerospace industry has always been the largest user of CNC machine tools.

Some large aviation factories are equipped with hundreds of CNC machine tools, among which cutting machine tools are the mainstay. CNC machined parts include the overall wall panel, girder, skin, bulkhead, propeller of aircraft and rocket, as well as the mold cavity of the casing, shaft, disc and blade of the aero engine and the special cavity surface of the combustion chamber of the liquid rocket engine. In the early stage of the development of CNC machine tools, it was mainly CNC machine tools with continuous trajectory and continuous trajectory control.

Circular command, clockwise machining.

Regardless of whether the x-axis is facing up or down, G02 and G03 are programmed the same.

The problem of the front turret and the rear turret: the operator stands in front of the CNC lathe, and the turret is located between the spindle and the operator, and if the spindle is between the turret and the operator, it belongs to the rear turret. The front turret spindle is facing upwards when the spindle is forward, and the tip is facing down when the rear turret spindle is spinning.

The programming of the front turret and the rear turret is the same, the direction of the clockwise circular arc interpolation G02 and the counterclockwise circular interpolation G03 are based on the right-hand Cartesian coordinate system, first determine the positive direction of the Y axis, and then determine the positive direction of the X axis from the positive direction of the Y to the negative direction, and then judge the direction of G02 and G03 in the XZ plane, the positive direction of the Y axis of the front turret is facing downward, and the positive direction of the Y axis of the rear turret is towards the upper part. No matter what system is the same, if you look at the right-hand Cartesian coordinate system from the right direction, you can determine that G02 and G03 are the same in the front and rear turrets, the Y axis is just a virtual axis, and the lathe does not actually have a Y axis.

Here's how to distinguish it:

1. Look at the upper half of the drawing (shaft), if it is convex is G03, and if it is concave, it is G02.

2. Look at the tool holder, the CNC lathe front tool holder, G02 processing counterclockwise arc, G03 processing clockwise arc, figuratively said that G03 processing convex arc, G02 processing concave arc, provided that the CNC lathe front tool holder.

3. The right-hand Cartesian coordinate system determines that the direction of the clockwise circular arc interpolation G02 and the counterclockwise circular arc interpolation G03 are based on the right-hand Cartesian coordinate system, first determine the positive direction of the Y axis, and then determine the positive direction of the X axis from the positive direction of the Y to the negative direction, and then judge the direction of G02 and G03 in the XZ plane It is already possible, the positive direction of the Y axis of the front turret is facing downward, and the positive direction of the Y axis of the rear turret is towards the upper part.

Drawing an arc along the beginning of the arc to the end point is a clockwise arc, and vice versa.

Use g02 clockwise and g03 counterclockwiseLater added r

1. High processing accuracy and stable processing quality.

2. It can carry out multi-coordinate linkage and process parts with complex shapes.

3. When the processed parts are changed, generally only need to change the CNC program, which can save production preparation time.

4. The machine tool has high precision and high efficiency, and can choose a favorable processing amount and high productivity.

5. The machine tool has a high degree of automation, which can reduce labor intensity.

Summary. 1) Specify the position of the center of the circle with i and k (i, k command):

Format: G02(G03) x Z i k F;

The parameter x z represents the coordinates of the end point of the arc; i k represents the coordinates of the center of the circle, and its value is the incremental value relative to the starting point of the arc, which can be divided into positive and negative. Generally, the Y coordinate value of CNC lathes can not be used and can be omitted.

2) Specify the position of the center of the circle with the radius r of the arc (R command):

Format: G02(G03) x Zr F ;

The parameter x z represents the coordinates of the end point of the arc; r represents the radius of the arc;

CNC lathe G03** with reverse knife lathe is used G02**.

G02 is a clockwise circular interpolation instruction, G03 is a counterclockwise circular interpolation instruction, and G02 and G03 refer to the rapid annihilation command of the shed, which are often used for processing arcs, complete circles or forming surfaces composed of arcs and other characteristic parts. G02 and G03 commands are modal ** and can be canceled by other commands of the chain rush group, such as G00, G01, etc.

G02 and G03 selection method (1) The definition method is to look at the negative direction of the plane coordinate axis where the arc is located along the vertical segment, and the tool is clockwise relative to the direction of movement of the workpiece, then it is clockwise arc interpolation G02, and vice versa. Cracking (2) empirical method of the CNC lathe with the front turret, if the outer circle is turned from the positive direction of the Z-axis to the negative direction, G02 is used if it is a concave arc, and G03 is used for convex arc. The opposite is true.

1) Specify the position of the center of the circle with i and k (i, k command): format: g02 ( g03) x type such as filial piety z i k f ; The parameter x z represents the coordinates of the end point of the arc; i k represents the coordinates of the center of the circle, and its value is the incremental value relative to the starting point of the arc, which can be divided into positive and negative.

Generally, the Y coordinate value of CNC lathes can not be used and can be omitted. (2) Specify the position of the center of the circle with the radius r of the arc (r refers to the draft order): format:

g02（ g03） x－ z－ r－ f－；The parameter x z represents the coordinates of the end point of the arc; r Oak represents the radius of the arc;

There are 3 differences between G01 and G32 for CNC programming

2. Relevant attention to G32: the current program section is thread cutting, and the next program section is also thread cutting, and the cutting in the next program section starts without detecting the one-turn signal of the spindle position encoder, and directly starts thread machining, which can realize continuous thread machining.

Second, the use of the two is different:

1. The use of G01: G01 is mainly used in contour processing and forming processing. Any diagonal movements (e.g. chamfers, bevels, corners, cones, etc.) must be programmed in this mode for precise machining.

2. The use of G32: The G32 instruction can be used to process straight threads, taper threads, end threads and continuous multi-section threads of the car source with metric or imperial pitch.

3. The essence of the two is different:

1. The essence of G01: the linear interpolation instruction in the CNC machining technical instruction. The function of the linear interpolation command is that the tool starts from a certain point at the feed rate set in the program and moves in a straight line to the target point.

2. The essence of G32: it is a modal G instruction; The pitch of the thread refers to the displacement of the main shaft in one rotation of the long axis (the displacement of the x-axis is based on the radius); When the X coordinate value of the orange point and the end point of the starting sail are the same (no X or U is entered), the straight thread is cut; When the z-coordinate values of the start and end points are the same (Z or W is not entered), the end face thread is cut; When the X and Z coordinate values of the start and end points are not the same, the taper and thread cutting is performed.

Summary. Pro-<>

Hello! 【Answer】G02 (clockwise arc interpolation) means that its path is clockwise; When identifying, it is necessary to use the tool holder of the machine tool as the rear tool holder (the tool holder is located opposite the operator); G03 (counterclockwise circular interpolation) means that its path is counterclockwise; Circular sowing is its definition; G01 (straight line replacement), but there is a difference between processing straight line and arc; However, the biggest difference between G01 and G02G03 is that G02G03 needs to be compensated for the tip radius when machining;

What does CNC lathe G02 mean.

Translate these two programs.

After the execution of got02 in line 3, does it skip to n2 t4m6 in line 28?

G0 T02 is to quickly locate the No. 2 tool, T4 M6 is to change the No. 4 tool, which tool to execute.

Hello dear<>! 【Answer】G02 (clockwise arc interpolation) means that its path is clockwise; When identifying, it is necessary to use the tool holder of the machine tool as the rear tool holder (the tool holder is located opposite the operator); G03 (counterclockwise circular interpolation) means that its path is counterclockwise; Circular sowing is its definition; G01 (straight line replacement), but there is a difference between processing straight line and arc; However, the biggest difference between G01 and G02G03 is that G02G03 needs to be compensated for the tip radius when machining;