Cmm Error Ddof

Channels Read Member List Help Home Forum PC-DMIS Enterprise Metrology Software PC-DMIS for CMMs CMM motion/functionality Collapse X Collapse Posts Latest Activity Search Page of 1 Filter Time All Time Today Last Week Last Month Show All Discussions only Photos only Videos only Links only Polls only Filtered by: Clear All new posts Previous Next jay R Senior Member Join Date: May 2006 Posts: 106 #1 CMM motion/functionality 12-30-2009, 02:38 PM Good afternoon, Our 7-10-7 is acting a bit strange today. Started out this morning with very eratic motion, hit would register, but then z axis would continue to drift a bit after the hit. This only happened in hits in the z direction. X and Y worked fine. Now it has gotten steadily worse as the day has progressed, to the point now, that I cannpt even qualify a stylus. When I take the initial hit on the sphere, the second hit never occurs, keep getting DDOF error, waiting for machine to be in position. Manual moves seem to work ok, but not 100% Any thoughts. More info required? As always, thank you in advance!! Jay ________ No2 vaporizers Last edited by jay R; 04-13-2011, 07:04 PM. If clutter is a sign of genius, I must be qualified to teach guys like Einstein and other smarty pantses B & S 7-10-7 pcdmis cad++ 3.25mr3 Tags: None Wes Cisco PC-DMIS Guru Join Date: Feb 2006 Posts: 3883 #2 12-30-2009, 02:43 PM Clean ways and scales. sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery Comment Post Cancel jay R Senior Member Join Date: May 2006 Posts: 106 #3 12-30-2009, 02:48 PM Hi Wes, thank you. We just had it serviced a week ago for our yearly calibration. He had it all apart and cleaned her up. It worked great for a couple of days, now, not so much. I have had one person tell me it maybe the z axis servo amp failing due to the continued motion after the z hit. Any thoughts on that? ________ Coach handbags Last edited by jay R; 04-13-2011, 07:04 PM. If clutter is a sign of genius, I must be qualified to teach guys like Einstein and other smarty pantses B & S 7-10-7 pcdmis cad++ 3.25mr3 Comment Post Cancel cmm.re Senior Member Join Date: Feb 2009 Posts: 297 #4 12-30-2009, 02:49 PM sounds like its losing count, do you have your probe readout on, and does it match up with coordinate system (z only hmmm? ), it can be a number of things... Comment Post Cancel Bill ********** Guest Join Date: Feb 2006 Posts: 1289 #5 12-30-2009, 02:57 PM Does it A

large errors on the printouts Leitz® LSP-X1 or TP-20's ? Other Any CMM: Calibration Brown & Sharpe® The New (OLD) CMM is Here! Brown & Sharpe® B&S CMM Validator 756 Mitutoyo® Problem with Probe Head Renishaw® SP25M module vibrating Brown & Sharpe® No, probe not seated error. Renishaw® False triggering tp200 Renishaw® MCR20 / Geomeasure 6000 Leitz® TR_MINM2 Machine parameter larger than Permitted Mitutoyo® No touches in the Bermuda triangle Renishaw® roughness measurements Sheffield® Error code E143 Sheffield® Legacy and new Sheffield help Brown & Sharpe® Good/Bad feedback on a http://www.pcdmisforum.com/forum/pc-dmis-enterprise-metrology-software/pc-dmis-for-cmms/17074-cmm-motion-functionality Mistral 775 CMM Renishaw® How do you index a PH10T manually? Sheffield® book value of Sheffield Cordax RS170 Mitutoyo® Overload Error 2002 Zeiss® RDS head $ ? Nikon(Metris/LK)® LK G-80C air pressure requirements Brown & Sharpe® Drifting in the axis Renishaw® Tesa star-m probe compatibility with renishaw ph10 in part programs Mitutoyo® M-507 Sheffield® Endevor 3 Mitutoyo® Airlines Mitutoyo® Brt910 Zeiss® Cal and Z axis measuring http://www.cmmguys.com/forum/archive/index.php/f-3-p-2.html error Brown & Sharpe® Malfunctioning jogbox-need quick fix ASAP Brown & Sharpe® Concentricity Tesa® TessaStar I head Renishaw® How do you align PH10T head? Zeiss® CMM DOWN! drifting head in all axis Mitutoyo® BRT910 ISA Comm Card Brown & Sharpe® Jog Box Sheffield® not able to use network and cmm at same time Brown & Sharpe® SP600 not taking hits in 2 directions Zeiss® drives shutting off when shop temp rises Starrett® Error Codes needed. Renishaw® TP200 Extensions Zeiss® Computer wont connect to the controller Starrett® My CMM has gone NUTS Brown & Sharpe® PH10 smoked Starrett® SERVO error Sheffield® Discovery II D-12, Need Help Zeiss® reinstall tool changer Zeiss® 1 axis error Zeiss® What version controller do I need? Sheffield® Hard bearing machines Brown & Sharpe® Need a Joy Stick for a Excel Renishaw® Probe smackdown: TP200 vs TP20 vs Tesastar Numerex® Granite Surface Starrett® Used purchase? Brown & Sharpe® "black box" Sheffield® MP 35 going bad?? Brown & Sharpe® Battery backup system suggestions Mitutoyo® Mitutoyo Legex 322 Sheffield® Axis counter fault Zeiss® Fixture for holding small 0.5" to 1.75" IDs Brown & Sharpe® JOGBOX - Joystick "float" Renishaw® Renishaw PH10T TR_FG014 Wrist Error Sheffi

in a; -y -z coordinates which can be easily controlled and measured. Each slide in three directions is equipped with a precision linear measurement transducer which gives digital display and senses + ve/-ve direction. These are manufactured in both http://what-when-how.com/metrology/co-ordinate-measuring-machines-cmm-metrology/ manual and computer-controlled models and come in a wide range of sizes to http://tr.page.tl/guestbook/index-79.htm accommodate a variety of applications. The measuring head incorporates a probe tip, which can be of different kinds like taper tip, ball tip etc. Various type of CMMs are shown in Fig. 17.11. All these have very low measuring uncertainty, computer aided measuring runs, vibration free mechanical structure, and high rigidity. In addition all moving cmm error parts must be set verv accurately, driven by (Measuring head movement in plane perpendicular to paper) Fig. 17.11. Types of CMMs. fast motors, incorporate sensitive drive unit for fine adjustment of the axis, have rugged and precise probe system to facilitate exact dynamic probing. The cantilever type (CMM—refer Fig. 7.11) is easiest to load and unload, but is most susceptible to mechanical error because of sag or deflection in cmm error ddof y-axis beam. Bridge type is more difficult to load but less sensitive to mechanical errors. Horizontal boring mill type is best suited for large heavy workpieces. Vertical bore mill type is highly accurate but usually slower to operate. A floating bridge type machine is also available in which the complete bridge can slide in v-direction on the slides. It has the compromises of both cantilever and bridge type, and is thus fast to operate, simple in alignment, and rugged construction affords consistent accuracy. For measuring the distance between two holes, the workpiece is clamped to the worktable and aligned with the machine's three mutually perpendicular*, y and z measuring slides. The tapered-probe tip is then seated in first datum hole and the probe position digital readout is set to zero. The probe is then moved to successive holes, at each of which the digital readout represents the coordinate part-print hole location with respect to the datum hole. Machine is also equipped with automatic recording and data processing units which are essential when complex geometric and statistical analysis is to be carried out. In fact, in modern machines, automatic on-line processing of measurement data is possible when the part is still on the worktable.

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