Smithy CNC Mills Manuel d'utilisateur

SmithyCNC Bed MillProgrammer’s Reference Guide

SmithyCNC Programmer’s Reference Manual:Language OverviewSmithyCNC Programmer’s Reference Manual: Language Overview1-61.3.3 Expressions and Binary Op

just a few significant digits, or the arc is a strange number of degrees, thenthere will be trouble with EMC. The R word clears up all that mess, and

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-19

SmithyCNC Programmer’s Reference Manual: Tool File & CompensationSmithyCNC Programmer’s Reference Manual: Tool File and Compensation9-20

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-21

Programmer’s Reference GuideMill Canned C yclesSmithy CNC EZ-TROL SYSTEMS10

SmithyCNC Programmer’s Reference Manual: Mill Canned CyclesSmithyCNC Programmer’s Reference Manual: Mill Canned Cycle10-2MILL CANNED CYCLESCanned Cy

descriptions below) is determined by the setting of the retract_mode: either tothe original Z position (if that is above the R position and the retrac

canned cycle. With the first set of blocks, the programmer must turn motion-back on with G0, as is done in the next line, or any other motion mode G w

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-510.3 G81 Cycle The G81 cycle is intended for drilling.0. Preliminary motion, as descri

Example 2 - Absolute Position G81Suppose the current position is (1, 2, 3) and the following line of NC code isinterpreted. G91 G81 G98 X4 Y5 Z-0.6 R1

SmithyCNC Programmer’s Reference Manual: Language Overview1-7Values returned by unary operations which return angle measures (ACOS, ASIN,and ATAN) ar

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-72. a feed parallel to the Z-axis to (13,17, 4.2)3. a traverse parallel to the Z-axis t

Example 4 - Absolute G81 R > ZThis is a plot of the path of motion for the second g81 block of code.G91 G81 G98 X4 Y5 Z-0.6 R1.8 L3 Since this plot

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-910.5 G83 CycleThe G83 cycle is intended for deep drilling or milling with chip breakin

6. If speed-feed synch was not on before the cycle started, stop it.7. Stop the spindle.8. Start the spindle clockwise.1.7 G85 CycleThe G85 cycle is i

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-11surface on the UPPER side of its base. You stick it carefully through the holewhen it

11. Move at traverse rate parallel to the XY-plane to the specified X,Y location. 12. Restart the spindle in the direction it was going before.Example

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-13For our example block both I and J are negative so they move back from thehole axis a

5. Restart the spindle in the direction it was going. It is unclear how the operator is to manually move the tool because a change tomanual mode reset

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-15<Graphics file: G81ret.png>Neither code will have any affect when incremental m

Example 7 - Eight Holes Revisited n100 g90 g0 x0 y0 z0 (move coordinate home) n110 g1 f10 x0 g4 p0.1 n120 g91 g81 x1 y0 z-1 r1l4(canned drill cycle) n

SmithyCNC Programmer’s Reference Manual:Language OverviewSmithyCNC Programmer’s Reference Manual: Language Overview1-81.6 Repeated ItemsA line may ha

SmithyCNC Programmer’s Reference Manual: Mill Canned Cycles10-17N1100 M2 (program end)The second reason to use a canned cycle is that they all produc

SmithyCNC Programmer’s Reference Manual: Language Overview1-9thing in any of the 120 possible orders (such as "#4=-7.0 g1 #3=15 g40 (foo)")f

1.9 Modal GroupsModal commands are arranged in sets called "modal groups", and only onemember of a modal group may be in force at any given

SmithyCNC Programmer’s Reference Manual: Language Overview1-11For several modal groups, when a machining center is ready to accept com-mands, one memb

Programmer’s Reference GuideG CodesSmithy CNC EZ-TROL SYSTEMS2

SmithyCNC Programmer’s Reference Manual:G CodesSmithyCNC Programmer’s Reference Manual: G-Codes2-2G-CODE OVERVIEWG codes of the RS274/NGC language ar

2.2 G1: Linear Motion at Feed RateFor linear motion at feed rate (for cutting or not), program G1 X- Y- Z- A- B- C-,where all the axis words are optio

SmithyCNC Programmer’s Reference Manual:G CodesSmithyCNC Programmer’s Reference Manual: G-Codes2-4must be used. The R number is the radius. A positiv

Programmer’s Reference GuidePrefaceSmithy CNC EZ-TROL SYSTEMS

instead of G2). The axis words are all optional except that at least one of X and Y must be used. I and J are the offsets from the current location (i

SmithyCNC Programmer’s Reference Manual:G CodesSmithyCNC Programmer’s Reference Manual: G-Codes2-62.4 G33: Spindle-Synchronized MotionFor spindle-syn

SmithyCNC Programmer’s Reference Manual: G Codes2-7If origin offsets (made by G92 or G92.3) were in effect before G10 is used, they willcontinue to be

SmithyCNC Programmer’s Reference Manual:G CodesSmithyCNC Programmer’s Reference Manual: G-Codes2-82.10 G38.2: Straight Probe<sub:G38.2:-Straight-P

SmithyCNC Programmer’s Reference Manual: G Codes2-9radius value of zero will be used.It is an error if: * the D number is not an integer, is negative

2.13 G53: Move in absolute coordinates<sub:G53:-Move-in>For linear motion to a point expressed in absolute coordinates, program G1 G53 X-Y- Z- A

SmithyCNC Programmer’s Reference Manual: G Codes2-11* Axis words are programmed when G80 is active, unless a modal group 0 G code is programmed which

the leading edge of the tool to cut more heavily. Typical values are 29, 29.5 or 30.The number of "spring passes" is given by the H- value.

SmithyCNC Programmer’s Reference Manual: G Codes2-13Rotational axis words are allowed in canned cycles, but it is better to omit them. If rotationalax

* inverse time feed rate is active during a canned cycle, * or cutter radius compensation is active during a canned cycle.When the XY plane is active,

SmithyCNC Programmer’s Reference Manual: PrefaceSmithyCNC Programmer’s Reference Manual: PrefacePREFACESmithyCNC uses the robost EMC2 (Enhanced Machi

SmithyCNC Programmer’s Reference Manual: G Codes2-151. Preliminary motion, as described above. 2. Move the Z-axis only at the current feed rate to the

The second repeat consists of 3 moves. The X position is reset to 9 (=5+4) and theY position to 12 (=7+5).1. a traverse parallel to the XY-plane to (9

SmithyCNC Programmer’s Reference Manual: G Codes2-174. Rapid back down to the current hole bottom, backed off a bit.5. Repeat steps 1, 2, and 3 until

* the spindle is not turning before this cycle is executed.2.18.8 G87: Back Boring<sub:G87:-Back-Boring>This code is currently unimplemented in

SmithyCNC Programmer’s Reference Manual: G Codes2-19<sub:G92,-G92.1,-G92.2,>See Section [sub:Coordinate-Systems] for an overview of coordinate s

offsets and the one that restores them, make a copy of the parameter file writtenby the first program and use it as the parameter file for the second

SmithyCNC Programmer’s Reference Manual:G CodesSmithyCNC Programmer’s Reference Manual: G-Codes2-21

Programmer’s Reference GuideM CodesSmithy CNC EZ-TROL SYSTEMS3

SmithyCNC Programmer’s Reference Manual:M CodesSmithyCNC Programmer’s Reference Manual: M-Codes3-2M-CODE OVERVIEWIn addition to the G-Codes, there is

9. Coolant is turned off (like M9). No more lines of code in an RS274/NGC file will be executed after the M2 orM30 command is executed. Pressing cycle

SmithyCNC Programmer’s Reference Manual: Preface

SmithyCNC Programmer’s Reference Manual:M CodesSmithyCNC Programmer’s Reference Manual: M-Codes3-4it has been turned off by an M9.The tool change may

3.8 M52: Adaptive Feed Control<sec:M52:-Adaptive-Feed-Control>To use an adaptive feed, program M52 or M52 P1. To stop using adaptive feed, pro-g

Programmer’s Reference GuideO CodesSmithy CNC EZ-TROL SYSTEMS4

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-2O-CODE OVERVIEWO-codes provide for flow control in

4.2 Looping: "do", "while", "endwhile", "break", "continue"The "while loop" has two struct

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-4

SmithyCNC Programmer’s Reference Manual: O Codes4-5

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-6

SmithyCNC Programmer’s Reference Manual: O Codes4-7

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-8

Programmer’s Reference GuideIntroduction & Language OverviewSmithy CNC EZ-TROL SYSTEMS1

SmithyCNC Programmer’s Reference Manual: O Codes4-9

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-10

SmithyCNC Programmer’s Reference Manual: O Codes4-11

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-12

SmithyCNC Programmer’s Reference Manual: O Codes4-13

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-14

SmithyCNC Programmer’s Reference Manual: O Codes4-15

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-16

SmithyCNC Programmer’s Reference Manual: O Codes4-17

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-18

SmithyCNC Programmer’s Reference Manual:Language OverviewSmithyCNC Programmer’s Reference Manual: Language Overview1-2LANGUAGE OVERVIEWThe RS274/NGC,

SmithyCNC Programmer’s Reference Manual: O Codes4-19

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-20

SmithyCNC Programmer’s Reference Manual:O CodesSmithyCNC Programmer’s Reference Manual: O-Codes4-21

Programmer’s Reference GuideOther CodesSmithy CNC EZ-TROL SYSTEMS5

SmithyCNC Programmer’s Reference Manual: Other CodesSmithyCNC Programmer’s Reference Manual: Other-Codes5-2OTHER CODES5.1 F: Set Feed Rate<sub:F:-

On some machines, the carousel will move when a T word is programmed, atthe same time machining is occurring. On such machines, programming the Tword

Programmer’s Reference GuideOrder of ExecutionSmithy CNC EZ-TROL SYSTEMS6

SmithyCNC Programmer’s Reference Manual: Order of ExecutionSmithyCNC Programmer’s Reference Manual: Order of Execution6-2ORDER OF EXECUTION6.1 Order

18. set retract mode (G98, G99).19. home (G28, G30) or change coordinate system data G10) or set axis offsets(G92, G92.1, G92.2, G94). 20. perform mot

Programmer’s Reference GuideG Code Best PracticesSmithy CNC EZ-TROL SYSTEMS7

1.1 Format of a lineA permissible line of input RS274/NGC code consists of the following four parts,in the order listed.1. An optional block delete ch

SmithyCNC Programmer’s Reference Manual: G-Code Best PracticesSmithyCNC Programmer’s Reference Manual: G-Code Best Practices7-2G-CODE BEST PRACTICES

Updating a variable to a new value, such as #1=#1+#2)7.6 Don't use line numbersLine numbers offer no benefits. When line numbers are reported in

Programmer’s Reference GuideCoordinate SystemsSmithy CNC EZ-TROL SYSTEMS8

SmithyCNC Programmer’s Reference Manual: Coordinate SystemSmithyCNC Programmer’s Reference Manual: Coordinate System8-2COORDINATE SYSTEM AND G92 OFF

8.3 Fixture Offsets (G54-G59.3 )Work or fixture offset are used to make a part home that is different from theabsolute, machine coordinate system. Thi

the Y offset and so on for all six axes. There are numbered sets like this for each of the fixture offsets. Each of the graphical interfaces has a way

SmithyCNC Programmer’s Reference Manual: Coordinate System8-5g0 z0g54 x0 y0 z0m2"But," you say, "why is there a G54 in there near the

8.3.2 Setting coordinate system values within G-code.In the general programming chapter we listed a G10 command word. This command can be used to chan

SmithyCNC Programmer’s Reference Manual: Coordinate System8-7G92 also works from current location as modified by any other offsets that arein effect

8.4.3 G92 CautionsSometimes the values of a G92 offset get stuck in the VAR file. When this hap-pens reset or a startup will cause them to become acti

SmithyCNC Programmer’s Reference Manual:Language OverviewSmithyCNC Programmer’s Reference Manual: Language Overview1-41.3 WordA word is a letter othe

SmithyCNC Programmer’s Reference Manual: Coordinate System8-9These tests did not study the effect of re-reading the var file while they containnumber

G10 L2 P2 x0.5 (offsets g55 x value by 0.5 inch) G10 L2 P3 x-0.5 (offsets g56 x value by -0.5 inch) G10 L2 P4 y0.5 (offsets g57 y value by 0.5 inch) G

SmithyCNC Programmer’s Reference Manual: Coordinate System8-11g1 f1 z-.25g3 x-.1 y0 i.1 j0g54 g0 x0 y0 z0m2Now comes the time when we might apply a s

Programmer’s Reference GuideTool File & CompensationSmithy CNC EZ-TROL SYSTEMS9

SmithyCNC Programmer’s Reference Manual: Tool File & CompensationSmithyCNC Programmer’s Reference Manual: Tool File and Compensation9-2TOOL FILE

The "POC" column contains an unsigned integer which represents the pocketnumber (slot number) of the tool carousel slot in which the tool is

Throughout this unit you will find ocasional references to cannonical functionswhere these are necessary for the reader to understand how a tool offse

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-5The effect of this is that in most cases the machine will pick up the offset

In both examples, the shaded triangle represents material which should remainafter cutting, and the line outside the shaded triangle represents the pa

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-7* To stop cutter radius compensation, program G40.* If G40, G41, or G42 is pr

1.3.1 NumberThe following rules are used for (explicit) numbers. In these rules a digit is a singlecharacter between 0 and 9.* A number consists of (1

Material Edge Contour When the contour is the edge of the material, the outline of the edge isdescribed in the NC program. For a material edge contour

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-9not be able to compensate properly when undersized tools are used.For a tool

2. Cannot change units with cutter radius comp3. Cannot turn cutter radius comp on out of XY-plane4. Cannot turn cutter radius comp on when already on

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-11diameter given in the tool table to be tangent to the contour at all points

If the first move after cutter radius compensation has been turned on is an arc,the arc which is generated is derived from an auxiliary arc which has

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-13ner is on the path, an arc is inserted to go around the corner. The radius o

B to some point C, located so that the line BC is more than one radius long.After the construction is finished, the code is written in the reverse ord

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-15This method will also work at a concave corner on a tool path contour, if th

program with tool zero selected, and it draws a line at the actual part's outline.(see figure below) Then, I select a tool with the diameter of t

SmithyCNC Programmer’s Reference Manual: Tool File & Compensation9-17Line 15 contains G41 D4, which means that the diameter of the tool described