JB/T 3051-1999 Nomenclature of coordinates and motion directions for CNC machine tools

JB/T 3051-1999 This standard is equivalent to ISO 841:1974 "Nomenclature of coordinates and motion directions of numerically controlled machine tools". This standard is a revision of JB 3051-82 "Nomenclature of coordinates and motion directions of numerically controlled machine tools". This standard specifies the naming method of coordinates and motion directions of numerically controlled machine tools, which can simplify the compilation of programs and ensure the interchangeability of recorded data. This standard is applicable to various numerically controlled machine tools. It can also be used for other numerically controlled machinery, such as winding machines, cutting machines, plotters, etc. This standard was first published on the date of year. JB/T 3051-1999 Nomenclature of coordinates and motion directions of numerically controlled machine tools JB/T3051-1999 Standard download decompression password: www.bzxz.net

iB.T30511999
This standard is equivalent to IS(）841:1974 "Nomenclature of coordinates and motion directions of numerically controlled machine tools". This standard is a revision of JB33051-82 "Nomenclature of coordinates and motion directions of numerically controlled machine tools". During the revision, editorial changes were made to the original standard, and the main technical content remained unchanged. This standard replaces J133051-82 from the implementation date 1. This standard is proposed by the National Technical Committee for Standardization of Industrial Automation Systems and Integration and is drafted by Beijing Machine Tool Research Institute 48
Mechanical Industry Standard of the People's Republic of China
Nomenclature of coordinates and motion directions of numerical control machine tools
Numcrical control of nuachines--Axis and motion nomenclalure1Scope
JB/T 3051—1999
erv 1s0 84t: 1974
This standard specifies the naming method of coordinates and motion directions of numerical control machine tools. It can simplify the preparation of programs and ensure the interchangeability of numbers.
This standard is applicable to various numerical control machine tools. It can also be used for other CNC machines, such as winding machines, cutting machines, plotters, etc. 2 Principles of naming coordinates and movement directions
2.1 This standard is for naming coordinates and movement directions so that programmers can determine the machining operation of the machine without knowing whether the tool is moving closer to the workpiece or the workpiece is moving closer to the workpiece. It can be assumed that the tool is relative to the stationary workpiece coordinate system (standard). 2.2 The standard coordinate system is a right-hand true angle Cartesian system (see Figure 1). It is related to the main linear guide rails installed on the machine tool.
2.3 The positive direction of movement of a certain part of the machine: it is the direction that increases the distance between the workpiece and the tool (that is, increases the size of the workpiece). 2.4 For machines used for pinning, boring and marking (only using its main linear motion), drilling or carefully 1. The direction of movement of a part The direction of the movement is negative.
2.5 When the machine tool cannot be used for drilling and boring, special rules will be made to eliminate the situation where the movement directions are contradictory. 2.6 In the attached machine tool diagram, when considering the movement of the tool, the letter with "" at the end indicates the direction of movement: when the tool moves, the letter with "" at the end indicates the direction of movement. The letter with "" at the end indicates the direction of movement opposite to the direction indicated by the letter (\) 37. Coordinate movement
3.1 Z coordinate movement (except 3.6). It is also the spindle that transmits the power of the visit. 3.1.1 For milling machines, drilling machines, armoring machines, and silk machines, the spindle drives the tool to rotate. 3.1.2 For lathes, grinders and other machines that form rotating surfaces, the spindle drives the workpiece to rotate. 3.2 If the machine tool has several spindles, select a vertical one. The clamping axis of the lower workpiece mounting surface is used as the main spindle. 3.3 If the main spindle is always parallel to one of the coordinates in the standard three-coordinate system, then this coordinate is the 7th coordinate. 3.4 If the main and auxiliary spindles can swing, and within the swing range, the spindle can be parallel to only one of the coordinates in the three-coordinate system. This coordinate is the 7th coordinate.
3.5 If the main spindle can swing, and within the range of motion, the spindle can move between two or more of the standard coordinate systems, the coordinate perpendicular to the mounting surface of the machine tool table is the 2nd coordinate (without considering the angle of the accessories or the mounting accessories). 3.6 If the machine tool does not have a spindle (such as a bullhead bed), then its coordinate is perpendicular to the workpiece mounting surface. 3.7 The 7th direction of F is the direction of increasing the distance between the workpiece and the tool. 4X coordinate movement
4.1 The X coordinate is horizontal and parallel to the workpiece clamping surface. This is the main coordinate of the tool or workpiece positioning plane. Approved by the State Bureau of Machinery Industry in 1999-0628
Implementation in 20000１-01
JB/T3051—1999
4.2 On machine tools without rotating tools or rotating workpieces (such as lathes), the X coordinate is parallel to the main cutting direction. This direction is the positive direction.
4.3 On machine tools with rotating workpieces (such as lathes, grinders, etc.), the direction of the X coordinate is in the radial direction of the workpiece. It is parallel to the cross slide. For tools mounted on the tool holder of the cross slide, the direction away from the center of rotation of the workpiece is the positive direction of the X coordinate (if the machine tool has more than two tool holders, it shall be confirmed according to the provisions of Chapter 8).
4.4 On machine tools with rotating tools (such as milling machines, drilling machines, boring machines, etc.), the following provisions are made: 4.4.1 If the Z coordinate is horizontal, when looking from the main tool spindle to the workpiece, the +X movement direction points to the right. 4.4.2 If the Z coordinate is vertical, for single-column machines, when looking from the main tool spindle to the column, the +X movement direction points to the right. For bridge-type gantry machines, when looking from the main spindle to the left column, the +X movement direction points to the right. 5 Movement of the Y coordinate
The +Y movement direction is determined according to the movement directions of the X and Y coordinates in accordance with the right-hand rectangular Cartesian coordinate system (see Figure 1). +X, +Y or +2
+A, +B
) or +
Figure 1 Cartesian coordinate system
6 Rotational motion A, B and C
6.1 A, B and C represent the rotational motion whose axis is parallel to the X, Y and Z coordinates respectively. 6.2 The positive direction of A, B and C represents the direction of advancement according to the right-hand thread in the positive direction of the X, Y and Z coordinates respectively (see Figure 1). 450
7 Origin of the standard coordinate system
JB/T3051---1999
7.1 The position of the origin (-0, y0, y0=0) of the standard coordinate system is arbitrary. 7.2 The origin (0° position) of the A, B and C motions is also arbitrary. When selecting, the origin (0° position) is preferably selected to be parallel to the Y, Z and X coordinates respectively.
8 Additional Coordinates
8.1 Linear Motions
8.1.1 If, in addition to the principal X, Y, and Z linear motions, there is a second set of coordinates parallel to these, they may be designated U, V, and W, respectively. If there is a second set of motions, they may be designated I, Q, and R, respectively. If, in addition to the principal X, Y, and Z linear motions, there are linear motions that are not or may not be parallel to XY or Z, they may also be designated U, V, W, PQ, or R, as appropriate. For boring and milling machines, the motion of the radial tool carriage slide may be designated U or P (if this letter is appropriate), with the direction of the slide away from the spindle center being the positive direction (see Figure 12).
8.1.2 Select the linear motion closest to the principal spindle and designate it as the first linear motion, the next closest as the second linear motion, and the farthest as the third linear motion.
For example:
a) Radial drilling machine: the up and down movement of the main shaft sleeve and the lifting and lowering movement of the cross arm on the column can be designated as 7. and W respectively; h) Hexagonal lathe: the movement of the cross tool holder and the hexagonal tool holder can be designated as B and W respectively according to the proximity and distance from the main shaft. 8.2 Rotational movement
If there is a second group of rotational movements parallel or not parallel to A, B and C at the same time as the first group of rotational movements A, B and C, it can be designated as D or E.
9 Direction of spindle rotational movement
The clockwise rotational movement direction of the spindle is the direction in which the right-hand thread enters the workpiece. 10 For the opposite direction when the workpiece moves
For machine tools where the workpiece moves instead of the tool, the above provisions for tool movement must be arranged in the opposite way on the paper tape. In the attached machine tool diagram, a letter with a "\", such as "X', indicates the instruction for the positive movement of the workpiece. A character without a “\”, such as a +X, indicates a command for the tool to move in the positive direction relative to the workpiece (for programmers and process personnel, only the movement direction without a “\” should be considered. For machine tool manufacturers, the movement direction with a “\” should be considered). 11 Some machine tool schematics
11.1 The schematics attached to this standard are the formal description of the coordinates of these machine tools. 11.2 In the schematics, letters represent the coordinates of the movement, and arrows represent the positive direction. 11.3 The coordinate system shown in each diagram will make it easier to program the parts. The coordinates marked here are the same as those on the part drawings.
The diagrams are as follows:
Figure 2 Ordinary lathe
Figure 4 Chuck lathe
JB/1 3051-1999
Figure 3 Turret type hexagonal lathe
Figure 5 Double column vertical lathe
Figure 6 Horizontal lifting table milling machine
Figure 8 Horizontal boring machine
JB/T3051--1999
Figure 7 Vertical lifting table milling machine
Note: For vertical drilling machine and vertical jig boring machine, the coordinates are also applicable to Figure 9 CNC and contour milling machine
Figure 10 Gantry type contour milling machine
Figure 12 Horizontal boring machine||tt| |IB/T3051—1999
Figure 11 Gantry movable contour milling machine
Figure 13 Hole coordinate (table movable surface and wheel milling machineFigure 14 Five-axis horizontal surface and contour milling machine IB/T3051-1999
Figure 15 Five-axis swing type milling head surface and contour milling machineFigure 16 10,000-axis swing worktable surface and contour milling machineFigure 17 External magic milling machine
Figure 18 ↓ Grinding taste
Figure 20 ShaperwwW.bzxz.Net
JB/T 3051-1999
Figure 19 Single-arm side bead
Figure 2! Vertical winding machine
Horizontal winding machine
Figure 24 Rotary punch press
JB/T 3051-1999
Figure 23 Flame cutting machine
Figure 25 Plotter
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