introduction to topmill- fanuc

8/2/2019 Introduction to TopMill- Fanuc

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Introduction To CNC MillingMachine


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Machine axis & coordinate system

3 Axis- X-Axis- Y-Axis- Z-Axis


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Basic Geometry


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Right Hand Rule


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Dimensional


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Advantages of CNC Machine Tools

Constantwork part quality & less scrap~ Fewer human machining mistake

Improved machine utilization~ Machine may work for long hours

Increased flexibility

~ Programs may be re-called or even edited within shortertime

Increased productivity~ Higher machining speed~ Decreased time in basic and auxiliary preparation oreven finishing job for machined part

Increased machining scope & capability~ May manufacture complex parts that is difficult, or evenimpossible to be machined with conventional machine


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Machine Reference Point

The machine zero point (also called the machine datum) constitutes theorigin of the machine reference system. As a rule it has been defined bythe manufacturer and it cannot be altered.


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Tool Reference Point

All tool movements effected by the control system (according to the specifiedcoordinates) will refer to the tool reference point, which is situated on the frontface of the tool mounting


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Work part Zero Point

The work part Zero point is also mean start point. It can be set at center, left orright at bottom or on top of the work piece.

It is recommended, though, to define the work part zero as identical with theorigin (zero point of the coordinate system) of the work part design drawing -this way the dimensions can be adopted directly from the drawing in the

course of programming a contour.


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Tool Length and Radius

Compensation


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Programming procedures

Raw material setup

Tool setup

Zero point definition

Data generation

Program editing

Simulation running

Create the setup form beforewe write the NC program ininteractive mode

Write the NC program andrun the simulation and solve

any problem that occurredduring the simulation


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The icon functions of the millingmachine screen

Open NC program

If we click on this icon, we can see all the NC-programs.

The NC-program folder is the one in which you can see the programs,

you have already edited.


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EDITOR If we click on this icon, we can see the current

program in the editor which enables us to look at the

current programmed line by line.


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TOOL EQUIPMENT

If we click on this icon, we can look at the tool

equipment.

Within this window, we can select the tools we

want to work with.

We can also remove or replace the tools here.

Tool equipment


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INTERACTIV MODE

Interactive Mode

This mode demonstrates the current simulation

line by line.

The program will simulate whichever process

you have highlighted or clicked on.

In fact you always write your programs in thismode.


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TESTRUN

Test run

This mode enables us to view a quicker

simulation. In this mode, the machine

movements are faster than in reality. It

only function when we are running the program.


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Dimensioning

DIMENSIONING

Within this mode, we can investigate each work

piece in detail.

It enables us to measure every dimension of the

work piece, after we finish doing the cutting or

drilling a hole.


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GRAPHIC MODE

Graphic mode

There are three graphic icons that enable us to view the work

piece in three different modes.

-The first mode is a 2D overview.

-The second is a 3D overview with chuck.-The third is a 3D overview of the work piece without

chuck.


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ZOOM BOX

This icon gives us the possibility to view the machine,work piece and tools in five different view modes.

- The first view mode is an overview of the whole machine.

- The second view mode is an overview of the machine table.

- The third is an 3D overview of the chuck device.

- The fourth is a closer overview of the work piece.

- The fifth is an overview of all the tools.

Zoom box


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ZOOM RECTANGLE

Zoom rectangle

This icon enables us to click on the image

and highlight various detailed views of the

machine, work piece and tools.


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STUDY 3D GRAPHIC

.This icon enables us to view the work piece from everyangel.

Study 3D graphic


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SET-UP DIALOG

Introduction:The primary requirement for simulating an NC program on one of our virtualmachining centers is that the machine tool must be set up in the same way asa real machine tool that is ready for production. The set-up conditionessentially involves the specifications describing the work piece, means ofclamping it, reference coordinates, tools and offset values. This set-upcondition is summed up and recorded in a tooling / set-up sheet which isentered as the header in every NC program when the set-up dialog isconcluded. If an existing NC program is loaded into the machine tool memory,the tooling / set-up sheet header can be edited or adapted after opening it withthe function. To create a new program, call up the set-up

dialog by means of the function and enter a name for theprogram. The contents of the default set-up / tooling sheet Dflt_mte are thenentered as defaults for the new set-up / tooling sheet and these can then beedited using the dialog functions.


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Creating a new NC program editing an existing set-up / tooling sheet

Select the function in order to open the NCprogram administration window.In the file name field, a name for a new NCprogram can be entered, e. g. test . It is

also possible to select an existing programname here. The (Open) function thencreates a new program or opens theexisting program and starts the set-up

dialog accordingly.


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Overview of the set-up dialog

If you want to use the set-up dialog to create a complete set-up / tooling sheet,follow the steps accessed by the following tabs:


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Set-up dialog General information tab

In this tab, enter general information onthe purpose of the respectiveprogramming task. It is not mandatoryhowever to enter data in this tab when

setting up a program.

Important:Clicking on the button terminatessetup operations. Do not click on thisbutton until you have finished setting upthe machine tool or editing the existing

set-up / tooling sheet.


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Set-up dialog Work piece tab

Various standard work piece shapes areprovided. The geometry data input fieldscontaining default values or into which youhave to enter values are identified by xxx.


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Set-up dialog Work piece tab


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Set-up dialog work piece clamping tab

Overview of possible combinations ofclamping devices. Selection of clamping tooltypes in the administration window:

-the pre-set means of clamping is

removed.

-opens the administration group fortypes of clamping devices or for selectingmeans of clamping.

List fields allow you to make entries

or select and accept pre-set limit values ordefault values.


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Set-up dialog Work piece clamping chuckclamping


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Set-up dialog Work piece clamping tab

The ZMT value matching the specified means of clamping and the clamping depth isrecommended by the set-up dialog in the ZMT selection/input field. If you enter a valuethat differs from the recommendation, a warning is shown to inform you that the ZMTmust be corrected or, if your ZMT entry is greater than there commended value, that aspacer plate must be placed below the clamping device.


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Set-up dialog Coordinate origin register tab

Four register values, G54, G55, G56 and G57, are available for defining thework piece coordinate origin (zero coordinates).

The coordinate origin values are internally specified for the corners of thework piece and the centre of the base surfaces and can be defined via aselection field.

In the lower selection field, select the respective specification (e. g.


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For standard raw work pieces,you can define the referenceorigin as being one of therecommended reference

points by simply selecting thispoint and then optionally movethe reference origin relative tothis point by the offsets IX, IYand IZ.


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Set-up dialog Tool system tab

If the tool set is not edited, the new set-up/tooling sheet can now be completedand stored by clicking on the button, you can then exit the set-up dialog.

The tool set can be checkedand used for the current

program set-up or can beedited if necessary.


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Set-up dialog Tool system tab


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Milling machine setting end,

enjoy with the CNC machineprogramming.

introduction to topmill- fanuc

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