Embed Size (px)
Citation preview
Welcome to our TNC
Newsletter, which brings you information on our latest
products and applications Being established for nearly 120 years, HEIDENHAIN have a range of contouring controls suitable for the most demanding of applications. HEIDENHAIN is represented in 49 countries worldwide, providing the assurance of a world class manufacturing company. Approximately 220,000 TNC’s have been produced, of which 35,000 are iTNC530’s and, with a group staff of n e a r l y 8 , 0 0 0 e m p l o y e e s , HEIDENHAIN can be your CNC control partner. In the UK, HEIDENHAIN operate via a w h o l l y o w n e d s u b s i d i a r y , HEIDENHAIN (GB) Ltd, which will celebrate it’s 40th birthday in 2009.
Visit our website
www.tnc.uk.net For access to the latest documentation, programming
station software and more ...............
Issue 1—2009
TNC News
NC Fundamentals Interesting for the NC novice: The interactive training system reveals basics of NC programming and HEIDENHAIN TNC controls.
Touch Probes The units show the design and function of various touch probes for measuring workpieces and tools.
Fundamentals of Machining in Tilted Working Planes If you are familiar with the NC fundamentals, here you’ll find an easy introduction to the topic of "Tilting a plane." The HEIDENHAIN Training Network Information on national and international HEIDENHAIN training courses.
TNC E-Learning from HEIDENHAIN This interactive training system teaches fundamentals of NC technology and of HEIDENHAIN TNC controls
Are you a HEIDENHAIN TNC user?
Would you like to cut to size every time?
Are you a HEIDENHAIN TNC user?
Would you like to cut your set-up times?
Tool Probing with HEIDENHAIN
The TT 140 tool measurement touch probe offers the following benefits: Automatic in-cycle measurement of actual tool
length and tool radius Measurement of the tool while in the spindle
Transfer of length and radius to the central tool file
Monitoring of tool wear and tool breakage toler-ances Facilitates unattended machine operation
It Happens! Should an accidental collision occur, the cen-tral spindle of the probe has been designed with this in mind
PROBES for HEIDENHAIN controls: TT 140 table-mounted tool probe for TNC 320, 370, 400 series and 530 controls. Probing cycles are a standard feature on HEIDENHAIN TNC controls
Component Probing with HEIDENHAIN
The Task Align the workpiece blank parallel to the axes
Set the datum in the workpiece plane at a corner
Set the tool axis datum on the top surface of the blank
The Time Saved With a TS three-dimensional touch probe from HEIDENHAIN, this set-up operation is performed with a time saving of about four minutes, or approx. 72%
PROBES for HEIDENHAIN controls: TS 632 infrared and TS 220 cable types for TNC 100, 200, 300 and 400 series controls. TS 640 infrared and TS 220 cable types for iTNC530 control. Probing cycles are a standard feature on HEIDENHAIN TNC controls
An Affordable Machine Enhancement TT220 including installation from £2700 TS640 including installation from £4600
An Affordable Machine Enhancement TT140 including installation from £1800
A n a m b i t i o u s m a c h i n i n g improvement project involving the installation of a new CNC horizontal b o r e r s p e c i f i e d w i t h t h e HEIDENHAIN iTNC 530 CNC system and the retrofitting of an iTNC 530 to a refurbished CNC vertical spindle gantry mill has more than halved cycle times at the C o l e f o r d , G l o u c e s t e r s h i r e manufacturing facility of SPP Pumps Ltd. It has also saved SPP in the region of £100,000 of sub-contract cost over the past year, because
split casings for larger variants of centrifugal pump can now be machined in-house. This, according to Gary Hurcombe, Operations
Manager, has cut lead times from three weeks to one week for what was previously the longest lead time item in a pump ‘kit of parts’. Ref lect ing i ts parent company’s f o c u s o n innovation, SPP decided in 2007 to reconfigure its split casing machining p r o c e s s i n t o roughing (on a
refurbished Mecof gantry mill) and finishing (on a new Dugard Eagle HBM-4 horizontal borer with 60-station tool magazine). Initially, it was necessary for r o u g h i n g a n d finishing operations to be completed on the HBM-4 while refurbishment of the older machine was taking place. Now, with the two machines up and running, SPP has been able to refine the mach in ing process – balancing cycle times and s i g n i f i c a n t l y i m p r o v i n g throughput. “Over the years we have acquired various pump companies along with their machine tools, so we already had several different types of CNC system before we decided to add to the l is t by spec i fy ing the HEIDENHAIN control,” says Gary Hurcombe. “The fact is that when we were first researching our options, everyone we spoke to said that if we were going to continue with shop f loor p rogramming the HEIDENHAIN control is the most user-friendly. This has proved to be the case because machinists Dave Sayer and Dave Houghton really like the flexibility and ease-of-use of
these new controls.” Retrofitting of the iTNC 530 control to the Mecof gantry mill was undertaken by Simon Hopkins of SDH Controls & Services Ltd of W o r c e s t e r ( a n a p p r o v e d HEIDENHAIN TNC retrofitter), who also fitted a HEIDENHAIN TS 220 touch probe. This probe has an accuracy of ±5 micron using a standard stylus and a repeatability of ±1 micron at a probing velocity of 1 m/min. HEIDENHAIN Applications Engineer Martin Lyons then provided the TS probe training, a crucial requirement as probing of key features on the raw castings determines the optimum set-up for the machining of datum faces, with tighter alignment tolerances being achieved, and also determines the amount of material to be removed
from wear ring bores prior to finish machining of the assembled halves of the split casing on the new CNC horizontal borer.
New and Old HEIDENHAIN provides the perfect machine control solution
SPP Pumps’ Gary Hurcombe, who project managed the company’s move to CNC ma-chining of split pump casings
The HEIDENHAIN iTNC 530 CNC retrofitted to the Mecof vertical spindle gantry mill by SDH Controls & Services Ltd.
Rough machining of wear ring bores using a Seco bull nose cutter
Sales Office - Tel. 01444 238550 email [email protected] TNC Technical Sales Engineer - Martin Lyons Tel. 07860 789155 email [email protected]
DCM in Test Run mode This new function enables you to check for collisions in the Test Run mode before actually machining a part. In
this way you avoid machine downtimes and increase machine availability, especially during unattended
operation. The screen shows the machine kinematics, as entered by the machine manufacturer, with all defined collision objects. As usual, the screen layout can be arranged to show the machine kinematics full-screen or at the right next to the NC program. If there is a collision, the TNC displays an error message and marks the colliding objects in red. Fixture monitoring The collision monitoring function of the iTNC now also considers the work holding equipment. This enables you to detect collisions between the tool and work holding in time, so that they can be avoided. HEIDENHAIN provides parameterized descriptions of standard work holding. The Fixture Wizard for PCs, which is available free of charge, helps you to describe your own work holding equipment and to transfer the description to the iTNC 530. In the Manual Operation mode, the fixture management function is used to set up the work holding equipment in the machine's work envelope. An interactive menu allows you to use the integrated measuring cycles to measure and automatically transfer the work holding equipment data, and to define the variable input values, such as the jaw distance of a vice.
Dynamic Collision Monitoring (DCM) (Optional): Improvements
Improvements in software version 05 In order to further accelerate the measuring process, you can reduce the number of measuring points per angular increment from four to three. Also, it is no longer required to set the datum in the ball centre. Simply move the touch
probe to a position above the calibration ball, and t h e i T N C w i l l automatically determine the centre of the calibration ball, which is r e q u i r e d f o r t h e measuring process. Deta i led log f i les providing different types of data (e.g. the measured compensation values) are available in order to make the calibration process more transparent. For example, the
new Cycle 452 (PRESET COMPENSATION) simplifies working with tool changer heads. This cycle enables you to adjust different tool changer heads in such a way that the workpiece preset applies for all heads. The required data is saved in the corresponding machine constants. As a result, the machine operator is now capable of calibrating new or exchanged milling heads on the machine without any special knowledge, so that a service technician is no longer needed for this task. Only a touch probe and a calibration ball are necessary for the measuring process.
Calibrating Rotary Axes with KinematicsOpt (Option): Improvements
