Wuhan Huazhong Numerical Control Co., Ltd HNC-18xp/T, HNC-19iT v4.0, HNC-21T, HNC-22T, HNC-18iT Programming Manual

Century

Century Star

Star

Star Turning

Turning

Turning CNC

CNC

CNC System

System

Programming

Programming Guide

Guide

V

V 3.3

November,

November, 2007

Wuhan

Wuhan Huazhong

Huazhong

Huazhong Numerical

Numerical

Numerical Control

3.3

3.3 2007

2007

Control

Control Co.,

Co.,

Co., Ltd

Ltd

Preface

Organization

Organization of

1. General

2. Preparatory Function

3. Interpolation Function

4. Feed Function

5. Coordinate System

6. Spindle Speed Function

7. Tool Function

8. Miscellaneous Function

9. Functions to Simplify Programming

10. Comprehensive Programming Example

11. Custom Macro

Applicability

This Programming Guide is applicable to the following CNC system:

HNC-18iT/19iT v4.0

of

documentation

of

documentation

of documentation

documentation

HNC-18xp/T

HNC-19xp/T

HNC-21TD/22TD v05.62.07.10

Internet

Internet Address

http://www.huazhongcnc.com/

Address

i

Table of Contents

Table

Table of

Preface ............................................................................................................................................. i

1 General ................................................................................................................................... 1

2 Preparatory Function (G code) ............................................................................................. 21

3 Interpolation Functions ......................................................................................................... 24

4 Feed Function ....................................................................................................................... 49

5 Coordinate System ................................................................................................................ 53

of

Contents

of

Contents

of Contents

Contents

1.1 CNC Programming ..................................................................................................... 2

1.2 Interpolation ................................................................................................................ 4

1.2.1 Linear Interpolation ........................................................................................ 4

1.2.2 Circular Interpolation ...................................................................................... 5

1.2.3 Thread Cutting ................................................................................................ 5

1.3 Feed Function ............................................................................................................. 6

1.4 Coordinate System ...................................................................................................... 7

1.4.1 Reference Point ............................................................................................... 7

1.4.2 Machine Coordinate System ........................................................................... 8

1.4.3 Workpiece Coordinate System ........................................................................ 9

1.4.4 Setting Two Coordinate Systems at the Same Position ................................ 10

1.4.5 Absolute Commands ..................................................................................... 11

1.4.6 Incremental Commands ................................................................................ 12

1.4.7 Diameter/Radius Programming .................................................................... 13

1.5 Spindle Speed Function ............................................................................................ 14

1.6 Tool Function ............................................................................................................ 15

1.6.1 Tool Selection ............................................................................................... 15

1.6.2 Tool Offset .................................................................................................... 15

1.7 Miscellaneous Function ............................................................................................ 18

1.8 Program Configuration ............................................................................................. 19

1.8.1 Structure of an NC Program ......................................................................... 19

1.8.2 Main Program and Subprogram .................................................................... 20

2.1 G code List ................................................................................................................ 22

3.1 Positioning (G00) ..................................................................................................... 25

3.2 Linear Interpolation (G01) ........................................................................................ 26

3.3 Circulation Interpolation (G02, G03) ....................................................................... 31

3.4 Chamfering and Rounding (G01, G02, G03) ............................................................ 37

3.4.1 Chamfering (G01) ......................................................................................... 37

3.4.2 Rounding (G01) ............................................................................................ 38

3.4.3 Chamfering (G02, G03) ................................................................................ 40

3.4.4 Rounding (G02, G03) ................................................................................... 41

3.5 Thread Cutting with Constant Lead (G32) ............................................................... 43

3.6 Tapping (G34) ........................................................................................................... 46

4.1 Rapid Traverse (G00) ............................................................................................... 50

4.2 Cutting Feed (G94, G95) .......................................................................................... 51

4.3 Dwell (G04) .............................................................................................................. 52

5.1 Reference Position Return (G28) .............................................................................. 54

5.2 Auto Return from Reference Position (G29) ............................................................ 55

5.3 Setting a Workpiece Coordinate System (G92) ........................................................ 57

5.4 Selecting a Machine Cooridinate System (G53) ....................................................... 58

5.5 Selecting a Workpiece Coordinate System (G54~G59) ............................................ 59

5.6 Origin of a Workpiece Coordinate System (G51, G50) ............................................ 61

5.7 Absolute and Incremental Programming (G90, G91) ............................................... 62

ii

Table of Contents

5.8 Diameter and Radius Programming (G36, G37) ...................................................... 64

5.9 Inch/Metric Conversion (G20, G21) ......................................................................... 66

6 Spindle Speed Function ........................................................................................................ 67

6.1 Limit of Spindle Speed (G46) ................................................................................... 68

6.2 Constant Surface Speed Control (G96, G97) ............................................................ 69

7 Tool Function ........................................................................................................................ 71

7.1 Tool Selection and Tool Offset (T code) ................................................................... 72

7.2 Tool Radius Compensation (G40, G41, G42) ........................................................... 74

8 Miscellaneous Function ........................................................................................................ 76

8.1 M code List ............................................................................................................... 77

8.2 CNC M-Function ...................................................................................................... 78

8.2.1 Program Stop (M00) ..................................................................................... 78

8.2.2 Optional Stop (M01) ..................................................................................... 78

8.2.3 End of Program (M02) .................................................................................. 78

8.2.4 End of Program with return to the beginning of program (M30) ................. 78

8.2.5 Subprogram Control (M98, M99) ................................................................. 79

8.3 PLC M Function ....................................................................................................... 81

8.3.1 Spindle Control (M03, M04, M05) ............................................................... 81

8.3.2 Coolant Control (M07, M08, M09) .............................................................. 81

9 Functions to Simplify Programming .................................................................................... 82

9.1 Canned Cycles .......................................................................................................... 83

9.1.1 Internal Diameter/Outer Diameter Cutting Cycle (G80) .............................. 83

9.1.2 End Face Turning Cycle (G81) ..................................................................... 88

9.1.3 Thread Cutting Cycle (G82) ......................................................................... 91

9.1.4 End Face Peck Drilling Cycle (G74) ............................................................ 94

9.1.5 Outer Diameter Grooving Cycle (G75) ........................................................ 96

9.2 Multiple Repetitive Cycle ......................................................................................... 98

9.2.1 Stock Removal in Turning (G71) .................................................................. 98

9.2.2 Stock Removal in Facing (G72) ................................................................. 104

9.2.3 Pattern Repeating (G73) ............................................................................. 108

9.2.4 Multiple Thread Cutting Cycle (G76) ......................................................... 111

10 Comprehensive Programming .................................................................................... 114

10.1 Example 1 ............................................................................................................... 114

10.2 Example 2 ............................................................................................................... 116

10.3 Example 3 ............................................................................................................... 118

10.4 Example 4 ............................................................................................................... 119

11 Custom Macro .................................................................................................................... 120

11.1 V ariables ................................................................................................................. 121

11.1.1 Type of Variables ........................................................................................ 121

11.1.2 System Variables ........................................................................................ 122

11.2 Constant .................................................................................................................. 129

11.3 Operators and Expression ....................................................................................... 130

11.4 Assignment ............................................................................................................. 131

11.5 Selection statement

IF,

ELSE,ENDIF ..................................................................... 132

11.6 Repetition Statement WHILE, ENDW ................................................................... 133

11.7 Macro Call .............................................................................................................. 134

11.8 Example .................................................................................................................. 136

iii

1. General

1

General

1

General

1

1 General

General

This chapter is to introduce the basic concepts in Computerized Numerical Control (CNC)

system: HNC-21T /22

T,

HNC-18iT/19iT, HNC-18xp/

T

, HNC-19xp/

T

.

1

1.1

CNC

1.1

CNC

1.1

1.1 CNC

CNC Programming

To

operate CNC machine tool, the first step is to understand the part drawing and produce a

program manual script. The procedure for machining a part is as follows (Figure 1.1):

1) Read drawing

2) Produce the program manual script

3) Input the program manual script by using the machine control panel

4) Manufacture a part

Programming

1. General

2

1. Read drawing

X

1. General

Φ60

Φ40

4 0

1 50

2. Produce the program manual script

N1 T0106 N2 M03 S460 N3 G00 X90Z20 N4 G00 X31Z3 N5 G01 Z-50 F100 N6 G00 X36 N7 Z3 …

3. Input the program manual script

Ζ

4. Manufacture a part

X

Z

Figure 1 . 1 The workflow of operation of CNC machine tool

3

1. General

X

Z

X

Z

1.2

Interpolation

1.2

Interpolation

1.2

1.2 Interpolation

Interpolation

Interpolation refers to an operation in which the machine tool moves along the workpiece

parts. There are five methods of interpolation: linear, circular, helical, parabolic, and cubic.

Most CNC machine can provide linear interpolation and circular interpolation. The other

three methods of interpolation (helical, parabolic, and cubic interpolation) are usually used

to manufacture the complex shapes, such as aerospace parts. In this manual, linear and

circular interpolation are introduced.

1.2.1

1.2.1 L

There are two kinds of linear interpolation:

L

inear

L

inear

L inear

inear Interpolation

1) Tool movement along a straight line (Figure 1.2).

2) Tool movement along the taper line

Interpolation

Figure 1 . 2 Linear Interpolation (1)

Figure 1 . 3 Linear Interpolation (2)

4

1. General

X

Z

1.2.2

1.2.2 Circular

Figure 1.4 shows a tool movement along an arc.

Note:

In this manual, it is assumed that tools are moved against workpieces.

Circular

Circular Interpolation

Interpolation

Figure 1 . 4 Circular Interpolation

1.2.3

1.2.3 Thread

There are several kinds of threads: c ylindrical, taper or face threads .

workpiece, the tool is moved with spindle rotation synchronously .

Thread

Thread Cutting

Cutting

Figure 1 . 5 Thread Cutting

To

cut threads on a

5

1. General

Tool

Chuck

1.3

Feed

1.3

Feed

1.3

1.3 Feed

Feed Function

- Feed refers to an operation in which the tool moves at a specified speed to cut a

workpiece.

- Feedrate refers to a specified speed, and numeric is used to specified the fe e drate .

- Feed function refers to an operation to control the fe e drate .

Function

Figure 1 . 6 Feed Function

For example:

F2.0 //feed the tool 2mm, while the workpiece makes one turn

6

1.4

Reference position

Tool post

Chuck

Coordinate

1.4

Coordinate

1.4

1.4 Coordinate

Coordinate System

System

1. General

1.4.1

1.4.1 Reference

Reference point is a fixed position on CNC machine tool, which is determined by cams and

measuring system. Generally, it is used when the tool is required to exchange or the

coordinate system is required to set.

There are two ways to move to the reference point:

Reference

Reference Point

Point

Figure 1 . 7 Reference Point

- Manual reference position return: The tool is moved to the reference point by operating

the button on the machine control panel. It is only used when the machine is turned on.

- Automatic reference position return: It is used after the manual reference position return

has been used. In this manual, this would be introduced.

7

1. General

+

X

+

X

+

Y

＇

+Z+

Y

+

Z

+Y+

C

+

Z

＇

+A +

B

+

C

+ X +Y +

Z

+

A

+

B

+

X

＇

1.4.2

1.4.2 Machine

Machine

Machine Coordinate

Coordinate

Coordinate System

System

The coordinate system is set on a CNC machine tool. Figure 1.8 is a machine coordinate

system of turning machine, and shows the direction of axes:

Figure 1 . 8 Machine Coordinate System

In general , three basic linear coordinate axes of motion are X,

Y,

Z. Moreover, X,

Y,

Z axis

of rotation is named as A, B, C cor respond ently. Due to different types of turning machine,

the axis direction can be decided by following the rule – “ three finger rule ” of the right

hand.

Figure 1 . 9 “ three finger rule ”

- The thumb points the X axis. X axis controls the cross motion of the cutting tool.

“ +X ” means that the tool is away from the spindle centerline

- T he index points the Y axis. Y axis is usually a virtual axis.

- T he middle finger points the Z axis. Z axis controls the motion of the cutting tool.

“ +Z ” means that the tool is away from the spindle.

8

1. General

1.4.3

1.4.3 Workpiece

The coordinate system is set on a workpiece. The data in the NC program is from the

workpiece coordinate system.

Example: Those four points can be defined on workpiece coordinate system:

Workpiece

Workpiece Coordinate

Coordinate

Coordinate System

Z-

X-

Figure 1 . 10 Workpiece Coordinate System

System

Y+

W

Y-

X+

90 °

Z+

P1 corresponds to X25 Z-7.5

P2 corresponds to X40 Z-15

P3 corresponds to X40 Z-25

P4 corresponds to X60 Z-35

P4

P3

25

35

Figure 1 .11Example of defining points on workpiece coordinate system

X

P2

P1

7.5

15

Φ 60

Φ 40

Φ 25

Z

9

1. General

4 0

Ζ

Φ60

Φ40

1 50 X

Ζ

X

3 0

Ζ

Φ60

Φ30

8 0 X

10 0

Ζ

X

1.4.4

1.4.4 Setting

There are two methods used to define two coordinate systems at the same position.

Setting

Setting Two

1) The coordinate zero point is set at chuck face

2) The coordinate zero point is set at the end face of workpiece

Two

Coordinate

Two

Coordinate

Two Coordinate

Coordinate Systems

Figure 1 . 12 The coordinate zero point set at chuck face

Systems

Systems at

at

the

at

the

at the

the Same

Same

Same Position

Position

Figure 1 . 13 The coordinate zero point set at the end face of workpiece

10

1. General

1.4.5

1.4.5 Absolute

The absolute dimension describes a point at “ the distance from zero point of the coordinate

system ” .

E xample: These four point in absolute dimensions are the following:

Absolute

Absolute Commands

P1 corresponds to X25 Z-7.5

P2 corresponds to X40 Z-15

P3 corresponds to X40 Z-25

P4 corresponds to X60 Z-35

Commands

P4

P3

25

35

X

P2

P1

7.5

15

Φ 60

Φ 40

Φ 25

Z

Figure 1 . 14 Absolute Dimension

11

1. General

1.4.6

1.4.6 Incremental

The incremental dimension describes a distance from the previous tool position to the next

tool position.

Example: These four point in incremental dimensions are the following:

Incremental

Incremental Commands

P1 corresponds to X25 Z-7.5 //with reference to the zero point

P2 corresponds to X15 Z-7.5 //with reference to P1

P3 corresponds to Z-10 //with reference to P2

P4 corresponds to X20 Z-10 //with reference to P3

Commands

P4

10

X

P2

P3

P1

7.5

10

Φ 60

Φ 40

Φ 25

Z

Figure 1 . 15 Incremental Dimension

12

1. General

8

8 0

0

6

6 0

0

B

A

Φ40

X

Z

Φ30

8

8 0

0

6

6 0

0

B

A

20

X

Z

15

1.4.7

1.4.7 Diameter/Radius

Diameter/Radius

Diameter/Radius Programming

Programming

The coordinate dimension on X axis can be set in diameter or radius. It should be noted that

diameter programming or radius programming should be applied independently on each

machine.

Example: Describe the points by diameter programming.

A

corresponds to X30 Z80

B corresponds to X40 Z60

Figure 1 . 16 Diameter Programming

Example: Describe the points by radius programming.

A

corresponds to X15 Z80

B corresponds to X20 Z60

Figure 1 . 17 Radius Programming

13

1. General

N

·

min

-

1

Chuck

V: Cutting speed v m/min

1.5

Spindle

1.5

Spindle

1.5

1.5 Spindle

Spindle Speed

The cutting speed (v) refers to the speed of the tool with respect to the workpiece when the

workpiece is cut. The unit of the cutting speed is m/min. As for the CNC, the cutting speed

can be specified by the spindle speed (N) in min-1.

Speed

Speed Function

Figure 1 . 18 Cutting Speed and Spindle Speed

Function

The formula to get the spindle speed is:

N: the spindle speed

v: cutting speed

D: diameter value of the workpiece

Example: When the diameter of workpiece is 200mm, and the cutting speed is 300m/min,

v

then the spindle speed:

N

=

∗

=

D

The constant surface speed refers to the cutting speed even when the workpiece diameter is

changed, and the CNC changes the spindle speed.

1000

N

=

D

π

30010001000

∗

≈

200

∗

ππ

mr

/478

v

∗

14

1.6

Tool

1.6

Tool

1.6

1.6 Tool

Tool Function

Function

1. General

1.6.1

1.6.1 Tool

It is necessary to select a suitable tool when drilling, tapping, boring or the like is performed.

As it is shown in Figure 1.19, a number is assigned to each tool. Then this number is used in

the program to specify that the corresponding tool is selected.

1.6.2

1.6.2 Tool

When writing a program, the operator just use the workpiece dimensions according to the

dimensions in the part drawing. The tool nose radius center , the tool direction of the turning

Tool

Selection

Tool

Selection

Tool Selection

Selection

Tool

Offset

Tool

Offset

Tool Offset

Offset

01

02

03

Figure 1 . 19

06

04

Tool

05

Selection

Tool

number

Tool

number

Tool

Tool number

number

Tool

post

Tool

post

Tool

Tool post

post

tool, and the tool length are not taken into account. However, when machining a workpiece,

the tool path is affected by the tool geometry.

workpiece

Standard tool

Rough cutting tool

Figure 1 . 20

Finishing tool

Tool

Offset

15

Grooving tool

Thread cutting tool

1. General

T

ool nose radius center

P

Imaginary tool

nose

� Tool Length Compensation

There are two kind of ways to specify the value of tool length compensation.

- Absolute value of tool length compensation (the distance between tool tip and

machine reference point)

- Incremental value of tool length compensation (the distance between tool tip and

the standard tool)

As it is shown in Figure 1.21, L1 is the tool length on X axis. L2 is the tool length on Z axis.

It should be noted that the tool wear values on X axis or Z axis are also contained in the tool

length compensation.

R

S

P

P=Tool

P=Tool tip R=Radius

R=Radius

R=Radius S=Cutting

S=Cutting

S=Cutting edge

tip

Figure 1 . 21

edge

center

edge

center

edge center

center

Tool

Length Compensation

L2

L1

� Tool Radius Compensation

Figure 1.22 shows the imaginary tool nose as a start position when writing a program.

Figure 1 . 22 The imaginary tool nose

16

1. General

7

●

X

0 9

Z

●

8

3

4

5

6

2

1

● Imaginary tool nose

+

+ T o ol nose radius center

7

●

X

0 9

Z

●

5

6

8

2

3

4

1

● Imaginary tool nose

+

+ Tool nose radius center

The direction of imaginary tool nose is determined by the tool direction during cutting.

Figure 1.23 and Figure 1.24 show the relation between the tool and the imaginary tool tip.

Figure 1 . 23 The direction of imaginary tool nose (1)

Figure 1 . 24 The direction of imaginary tool nose (2)

17

1. General

1.7

Miscellaneous

1.7

Miscellaneous

1.7

1.7 Miscellaneous

Miscellaneous Function

Miscellaneous function refers to the operation to control the spindle, feed, and coolant. In

general, it is specified by an M code.

When a move command and M code are specified in the same block, there are two ways to

execute these commands:

1) Pre-M function

M command is executed before the completion of move command

2) Post-M function

M command is executed after the completion of move command.

The sequence of the execution depends on the specification of the machine tool builder.

Function

18

1. General

%1000

N01 G91 G00 X50 Y60

N10 G01 X100 Y500 F150 S300 M03

N...... ;COMMENT

N200 M30

Program

Program block

Command character

Program number

N.. G .. X … Y … F.. M.. S..

Program block

Miscellaneous function

Spindle function

Feed Function

Coordinate - Dimension word

Preparatory function

Program block number

Program

1.8

Program

1.8

Program

Program Configuration

1.8

1.8.1

1.8.1 Structure

As it is shown in Figure 1.25, an NC program consists of a sequence of NC blocks

block is one of machining steps. Commands

Structure

Structure of

- Format of program

Configuration

of

an

of

of an

program

program name

NC

an

NC

an NC

NC Program

Commands

Commands in each block are the instruction.

Figure 1 . 25 Structure of an NC Program

name

Program

blocks

blocks . Each

The program name must be specified in the format OXXXX (X could be letters or

numbers).

program

- Format of program

T he program number should be started with %XXXX or OXXXX (X could be numbers

only).

- Format of blocks

A

block starts with the program block number.

program

program number

blocks

number

Figure 1 . 26 Structure of Block

19

end

Instruction 1

Instruction 2

Instruction n

Instruction n+1

Follow the direction

ofthe subprogra m

Instruction 1

Instruction 2

Return to the main pr ogram

Main program

Subprogram

of

- Format of end

The last block should contain M02 or M03 to indicate the end of program.

- Format of Comments

All information after the “ ; ” is regarded as comments.

All information between “ ( ) ” is regarded as comments.

end

end of

Comments

program

of

program

of program

program

1. General

1.8.2

1.8.2 Main

There are two type of program: main program and subprogram. The CNC operates

according to the main program. When a execution command of subprogram is at the

execution line of the main program, the subprogram is called. When the execution of

subprogram is finished, the system returns control to the main program.

Main

Main Program

Program

Program and

and

Subprogram

and

Subprogram

and Subprogram

Subprogram

Note:

Main program and its subprogram must be written in a same file with a different program

codes.

Figure 1 . 27 Main program and subprogram

20

2

Preparatory

2

Preparatory

2

2 Preparatory

Preparatory Function

There are two types of G code: one-shot G code, and modal G code.

Type

Type Meaning

One-shot G code The G code is only effective in the block in which it is specified

Modal G code The G code is effective until another G code is specified.

Example : G01 and G00 are modal G codes.

G00X_

Meaning

Function

Function (G

Table 2 1 Type of G code

(G

(G code)

code)

2. Preparatory Function

G01Z_

Z_

X_

G0 0 is effective in this range

21

2.1

G

2.1

2.1 G

The following table is the list of G code in HNC system.

code

G

code

G code

code List

G

code

G

code

G

G code

code Group

List

Group

Group Function

Function

Table 2 2 G code list

2. Preparatory Function

G00

G01

◣

01

G02

G03

G04 00 Dwell

G20

G21

◣

G28

G29

G32

G34

G36

◣

G37

G40

◣

G41

08

00

01

17

09

Positioning (Rapid traverse)

Linear interpolation (Cutting feed)

Circular interpolation CW

Circular interpolation CCW

Input in inch

Input in mm

R eference point return

Auto r eturn from reference point

Thread cutting with constant lead

Tapping

Diameter programming

Radius programming

Tool nose radius compensation cancel

Tool nose radius compensation on the left

G42

G46 16 Setting the limit of spindle speed

◣ G50

04

G51 Moving the origin of workpiece coordinate system

G53 00 Selecting a machine coordinate system

G54

◣

G55

G56

G57

G58

11 Setting a w orkpiece coordinate system

Tool nose radius compensation on the right

C anceling the workpiece’s origin movement

22

2. Preparatory Function

G59

23

2. Preparatory Function

G71

G72

Stock Removal in Turning

Stock Removal in Facing

G73

G74

G75

06

G76

G80

G81

G82

G90

◣

Pattern repeating

Front drilling cycle

Side drilling cycle

Multiple t hread cutting cycle

Internal diameter/ Outer diameter cutting cycle

End face turning cycle

Thread cutting cycle

Absolute programming

13

G91

Incremental programming

G92 00 Setting a c oordinate system

◣ G94

Feedrate per minute

14

G95

G96

Feedrate p er revolution

Constant cutting speed

16

Constant cutting speed cancel◣ G97

Explanation:

1) G codes in 00 group are one-shot G code, while the other groups are modal G

code.

2) ◣ means that it is default setting.

24

3

Interpolation

3

Interpolation

3

3 Interpolation

Interpolation Functions

This chapter would introduce:

1) Positioning Command (G00)

2) Linear Interpolation (G01)

3) Circular Interpolation (G02, G03)

4) Chamfering and Rounding (G01, G02, G03)

5) Thread Cutting with Constant Lead (G32)

6) Tapping (G34)

Functions

3. Interpolation Function

25

3.1

Positioning

3.1

Positioning

3.1

3.1 Positioning

Positioning (G00)

Programming

G00 X(U) … Z(W) …

(G00)

3. Interpolation Function

Explanation

Explanation of

X, Z Coordinate value of the end point in the absolute command

U, W Coordinate value of the end point in the incremental command

Function

The tool is moved at the highest possible speed (rapid traverse). I f the rapid traverse

movement is required to execute simultaneously on several axes, the rapid traverse speed is

decided by the axis which takes the most time. The operator can use this function to position

the tool rapidly, to travel around the workpiece, or to approach the tool change position.

Example

Move tool from P1 (45, 90) to P2 (10, 20) at the rapid traverse speed.

of

the

parameters

of

the

of the

parameters

the parameters

parameters

X

P1

P2

M

Absolute programming:

G00 X10 Z20

Incremental programming:

G00 U30 W70

W

Figure 3 . 1 Positioning (Rapid Traverse)

26

Z

Wuhan Huazhong Numerical Control Co., Ltd HNC-18xp/T, HNC-19iT v4.0, HNC-21T, HNC-22T, HNC-18iT Programming Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

General

CNC Programming

Interpolation

Circular Interpolation

Thread Cutting

Feed Function

Coordinate System

Reference Point

Absolute Commands

Incremental Commands

Diameter/Radius Programming

Tool Function

Tool Selection

Tool Offset

Miscellaneous Function

Program Configuration

Interpolation Functions

Positioning (G00)