Software user's manual -...

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5804A0058 ENGLISHIssue.Revision: 1.0

481/96

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This manual has been prepared for use by clients only and it contains information protected bycopyright. It must not be photocopied or reproduced in any form, either fully or in part, without theprior written consent of BIESSE. The manual is supplied together with the machine, and must bekept in a safe place in order to have it always to hand for consultation.

The manual must only be used by personnel who have been adequately trained to operate themachine. BIESSE cannot be considered responsible or liable for damage resulting from incorrector improper use of the documentation provided. In order to avoid incorrect manoeuvres that mightresult in danger to the operator or to third parties, it is essential to read and fully understand all thedocumentation supplied with the machine.

Code: Issue: Revision: Approval number:

5804A0058 1 0 (03, 2001) 2001/001

List of changes

Revision: Additions: Deletions: Changes:

��BIESSE S.p.A. Woodworking Machinery(5804a0058.fm-230301)


�� BIESSE S.p.A. Woodworking Machinery(5804a0058.fm-230301)

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&KDSWHU�� ;1&�3RVW�3URFHVVRU1.1 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.3 Machining on the top surface . . . . . . . . . . . . . . . . . . . . . . . 1-2

Compensation and Lead-in/lead-out . . . . . . . . . . . . . . . 1-31.4 Using the boring unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41.4.1 Machining with blade . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-81.5 Machining with transfer on surfaces . . . . . . . . . . . . . . . . . 1-91.6 Aggregate boring on inclined surface . . . . . . . . . . . . . . . . . 1-101.7 Machining with interpolating transfer . . . . . . . . . . . . . . . . . 1-12

��BIESSE S.p.A. Woodworking Machinery(5804a0058TOC.fm-230301)


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The XNC post processor comprises two programs:

The file C_biesse.exe must be copied to C:\, whereas the Post Processor source or the fileOnepost must be copied to \Licomdat\ rposts.alp

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Biesse electrospindles are characterised by the fact that their cartesian axes, identifying the table,are back to front; that is to say the positive Z axis faces downwards, and the origin of the table islocated in the top left hand corner, so that machining operations are carried out in the X+ Y-quadrant of a normal triad of cartesian axes.

In Alphacam it will therefore be necessary to generate a working volume by positioning the firstpoint at the coordinates X0, Y0 and the second point in the quadrant X+, Y-. The value of the top Zmust be 0, whereas the bottom Z corresponds to the panel thickness, with a negative value.

The dimensions of the working volume will be used by the Post Processor to define the size of thepanel, which characterises the graphics used on the numerical control.

The Post Processor will also reverse the values of the Y coordinates, changing them from negativeto positive.

Fig. 1

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INFORMATION

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The file generated by AlphaCAM must be copied to the floppy disk in the folder:

a:\p_p\prog

From the XNC, using the editor program, read the program on the floppy disk and then save it tothe hard disk, before loading it again. This allows the XNC numerical control to create thenecessary labels within the program generated by AlphaCAM

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The top surface of the working volume must be enabled, and geometrical forms can be createdusing as a reference the LOCAL origin of the surface, which must be positioned at the top corner,at coordinates X0, Y0 and Z0, referred to the GLOBAL origin.

In the case of RSWLPLVDWLRQ�RSHUDWLRQV��1HVWLQJ� it is not necessary to define the workingvolume, but only a rectangle representing the panel for which geometrical forms or tool paths areto be optimised.

Regardless of the position of the panel on the screen, the system generates the machiningcoordinates using as a reference point the bottom left hand corner of the panel selected. On thecontrary, in the case of a machining operation on the top surface the post processor will perform atransfer of the origin, positioning it at the top left hand corner and recalculating the coordinates onthe basis of this new situation.The user will be requested to enter the panel dimensions during the Post Processor processingphase.

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To define which of the electrospindle heads is to be used, enter the number of the electrospindlehead to be used under the item Tool Number, during the machining phase.

It is possible to manage helical interpolations in AlphaCAM, using the command 0RGLI\�=�3RLQWE\�3RLQW�in the menu 0DFKLQLQJ, applied to a milling operation present on the surface in circularinterpolation.

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On the top surface it is possible to carry out machining operations using straight, curved or slopinglead-in and lead-out, and it is also possible to manage fast compensation before lead-inmovements. When this option is enabled it is thus possible not to generate the lead-in and lead-outelementTo disable the tool radius compensation a movement is performed in Z, bringing the tool over thepiece, and another movement of 1 mm is then performed in X with the function G40.

CAUTION

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n To indicate that a machining operation must be carried out with the boring unit and not with the electrospindle head, use a tool with a corrector number equal to 100.

n To indicate that the tool is flat tipped, hinged or countersunk, the value 1 must be entered in position 1 of the Tool Notes.

n To indicate that the tool is a through drill, the value 2 must be entered in position 1 of the Tool Notes. The value read will be assigned to the parameter TPF (Bore type).

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X

Y

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Boring operations carried out on the top surface must use as reference the origin positioned oncoordinates X0, Y0 and Z0, with respect to the Global origin (See Fig 2).

For machining operations carried out on the vertical surfaces, on the other hand, it is possible tomove the origin to one of the four corners of the top surface (i.e. Top left and Top right corner of theactive surface) so that the coordinates of the bores will refer to the origin position. If the origin ofthe surface has not been defined in the correct position, an error message will be triggered.


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In figure 3, for example, the bores machined on the active surface will have the coordinates for thecentre of the bore referred to the corner in which the local origin of the surface is located (Origincoloured blue in figure 3). This gives the numerical control a certain program flexibility, so thatwhen the dimensions of the panel are changed (in this case on the X axis) the distance of thebores from the right corner remains unchanged.

Fig. 3

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It is also possible to carry out boring operations on surfaces parallel to the sides of the workingvolume, as shown in the example illustrated in figure 3 bis

To obtain bores that are only present on a single work surface, but refer to different origins, theAlphaCAM command: /LNH�&XUUHQW�6XUIDFH�EXW�GLIIHUHQW�RULJLQ must be used to define a newsurface on which the origin can be positioned in the corner desired and the bores to be machinedcan be defined.

The XNC numerical control, with optimisation commands that take into account the way in whichthe machine is tooled-up, manages both the boring sequence and use of the tools to carry out amachining operation.

The Post Processor provides the numerical control with the bore coordinates, the reference originto which the coordinates refer, the diameter and depth of the bores.

Fig. 4

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The Post Processor manages both the )L[HG�%ODGH, which only allows machining operationsparallel to the X axis, and the $QJOH�%ODGH, which enables cuts to be made at any angle.

The tool defined in AlphaCAM must be a flat cylindrical tool, with a diameter of the same value asthe blade thickness and a corrector number equal to the one set inside the Post Processor (Seesetting variables at the start of the Post Processor instructions).

The machining operation must be applied to a single Line element only, and must be carried outusing the command $36�7RRO�&HQWUH, using either one or more runs, either two-way or simple.

The position and direction of the phantom tool define the starting point and the working direction ofthe blade.

The geometrical form must be placed on the Top surface of the working volume, with the originlocated in the top left hand corner (See Figure 4) at coordinates X0, Y0 and Z0, referred to theGlobal origin.

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Management of angular transfer takes place by defining a tool with a corrector number equal to theone set in the variables at the beginning of the Post Processor (Value 99)

As shown in fig. 5 it should be noted that it is sufficient to enable one of the four vertical surfaces inthe working volume or in any other vertical surface and define the geometrical form on the activesurface, before going on to machine it with the corrector tool 99.

If the active vertical surface belongs to one of the four sides of the panel, or to surfaces parallel tothese, the origin must be positioned on the top left hand or top right hand corner. On the contrary,if the active surface does not belong to one of the four sides of the panel, the origin can bepositioned as desired.

In both cases, that is to say for any vertical surface, the machining coordinates will refer to theglobal origin.

If the machining operation involves a number of runs on the Z axis, it is necessary that the lead-inand release points be the same, so as to obtain a continuous machining movement withoutgenerating the lead-out function.

1�%��The XNC numerical control does not allow circular interpolations to be carried out outside thestandard surfaces of a panel, i.e. the top surface, right and left side surfaces, front and rearsurfaces. On the other surfaces it is only possible to generate straight interpolations.

Fig. 6

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The coordinates defined with ORX and ORY in the PAN line of the function G100, take intoaccount the safety distance for the surface, i.e. they are the coordinates for the fast lead-in tomachining seen on surface X, Y, while the parameter PRF indicates the depth along the tool axis.

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In versions of the XNC prior to March 2000, machining with the Morari chuck does not allow toolcompensation movements, so that it is necessary to use the command &HQWUH�$SV�WRRO whencarrying out a machining operation, and it is also necessary to use a tool with a diameter the sameas the one used on the machine.

In versions of the XNC dated later than March 2000, on the contrary, it is possible to correct thetool path. AlphaCAM will generate the parameter PG40 (which indicates the side of thegeometrical form on which machining is to be carried out), with the proper correction value.

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To carry out an inclined boring operation with the aggregate, it is first necessary to define aninclined surface. The inclined surface generated must have three basic characteristics:

n The Z axis of the surface generated must leave the piece

n The X axis of the surface generated must be parallel to the global XY surface

n The Y axis of the surface generated must go upward.

The above figure shows an example of a correctly generated inclined surface.

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With the active surface, create the geometrical forms of the bores and then the boring operations.The boring operation will have the following parameters:

n Z safety value: not used to generate the NC code for the machine tool, but this parameter must be defined to ensure correct movement of the tool on screen.

n Rapid return level: Represents actual rapid positioning of the tool with respect to the piece.

n Surface of the material: indicates the Z value at which the material starts, with respect to the active surface

n Bottom of bore: indicates the Z value for the end of boring, with respect to the active surface

n Safety distance: As in the case of boring operations with boring unit, this option must ALWAYS be selected.

The figure below shows an example of values entered for a boring operation:


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It is possible to perform an interpolation of the angular transfer and of the X and Y axes, so as tokeep the tool perpendicular to the profile drawn on the top surface of the AlphaCAM workingvolume.

The profile of the piece (to be followed by the tool bit) must be generated on the top surface, andthe phantom tool must be positioned on the left hand or on the right hand side of the profile.

Define a tool with diameter .1 (one tenth) so that the coordinates of the tool bit are generated, withonly a slight variation with respect to the geometrical form generated.

Position the phantom tool at the point on the geometrical form in which machining is to start. It canbe positioned either on a line or on a curve.

Generate the machining operation using the command 5RXJKLQJ�)LQLVKLQJ making sure that youenter the value 99 in the field used to define the corrector number (this indicates that the tool beingused is an angular transfer). The value entered in the field Final Depth is used for the Z workingposition, whereas the Z safety and Z lead-in values are not used.

INFORMATION

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