недеља, 24. мај 2009.


  • Pretpostavićemo da je čitalac ovog sajta donekle upoznat sa pojmom CNC programiranja, njihoim načinom funkcionisanja i načinom upravljanja preko G-koda. Da ne dužimo priču, osnovno pitanje kojim će se ova prezentacija baviti je - kako najlakse, na osnovu crteža, dobiti G-kod kojim će naš CNC strug moći da napravi ono što želimo?

  • Naš put, shodno ovome, ići će sledećim smerom: dizajn proizvoda; generisanje G-koda na osnovu dizajna; ubacivanje koda u softver koji pokreće naš CNC strug, i proizvodnja..

  • Osnovna ideja pisca ovih redova, bila je da iznađe postupak koji će biti što prostiji, i kojeg će moći da upotrebi svako od Vas ko se bavi CNC programiranjem. Naravno, nadam se da ćete uvideti praktičnu primenu - naime, bukvalno ćete biti u stanju da kažete Vašem mušteriji (naručiocu proizvoda, ili kome god to bude trebalo): "Nacrtaj mi ono što želiš, i ja ću ti to napraviti bez po muke".

  • Moj lični stav je da, bez obzira na sve, ipak treba znati rukovanje sa G-kodom, iz prostog razloga što će Vam izvesne prepravke ponekad, možda i biti potrebne. Naravno, ne morate znati ceo G-kod napamet. Dovoljno je da znate kako ceo program treba da izgleda, i da pred sobom imate spisak G-kodova, koji uvek možete skinuti sa interneta, recimo ovde ili ovde. Na kraju, vodite računa da je softver koji je u ovom postupku korišćen, ipak nedovoljno razrađen, da ne kažem - amaterski. Ali, ono što je bitno to je da služi svrsi. Ipak je to mali broj programskih linija, i videćete nakon malo vežbe da nije nikakav problem ući u sam kod i vršiti na njemu određene intervencije.

  • Za sam uvod, ovo je dovoljno. Prelazimo na Korak 1 - Dizajn Predmeta.

CNC bloggger testing

Affordable CNCs and DROs will be demonstrated at MACH 2008 performing milling, machining centre and turning applications and show that price does not compromise performance

Anilam will be demonstrating the easy-to-use yet powerful functionality of its extensive range of CNC systems for milling, machining centre and turning applications (Series 3000, 4000, 5000 and 6000) alongside its equally impressive Wizard 411 and Wizard 1000 digital read-outs (DRO). And it will show how price does not compromise performance.

The 2-/3-axis milling Anilam Series 3000M will sit side-by-side with the 3-/4-/5-axis 5000M Series and the multi-axis 6000 Series, as well as the 2-/3-axis 4200T turning system.

The aim, said Anilam, is to highlight their unbeatable cost-to-performance ratios.

Visitors to the stand will be able to learn that Anilam CNCs feature a minimum of 8 Mbytes of RAM (up to 64 Mbytes) and networking capability that boasts auto-sensing at 100Mbit/s for data transmission.

The result is that users can gain improvements of up to 50% in program verification, and performance improvements of 15% in the processing of 8,000-block programs featuring 0.003in step-over increments.

* probing functionality - probing functionality for all industry-standard probes is standard on the 6000 Series (optional on the 3000 and 5000 Series) and, as is usual with all Anilam control functions, probe cycles are easy to use through a graphical/conversational screen.

After a cycle is selected, the appropriate variables are input via simple question and answer routines.

Tool measurement cycles include the following.

* Tool probe calibration.

* Tool length and diameter offset preset.

* Manual tool length and diameter measurement (for special tools).

* Tool breakage, length and diameter wear detection.

Workpiece measurement cycles cover the following functions.

* Edge find - single surface measure/edge.

* Corner out/in - outside/inside part corner find.

* In/out boss - inside/outside hole or boss find.

* In/out web - inside/outside web or slot find.

* Probe move - protected positioning.

* Skew comp - skew error compensation or angle find.

The multi-axis 6000 Series CNC is increasingly gaining approval by original equipment manufacturers and importers of vertical machining centres.

The control combines Anilam’s conversational Machinist’s Language programming routines with G Code programming to create a CNC that has an unrivalled level of functionality and user-friendliness within a single system.

It is supplied as a complete OEM package with a range of nine axis motors rated from 3Nm to 20.5Nm and ten spindle motors covering the power range 4.5kW to 22kW.

These suit the high traverse speeds of up to 30m/min and the up to 10,000 rev/min spindle speeds common on such machines.

The CNC has a powerful 586 DX4 133 PC processor and 16Mbytes of RAM, plus a 12in TFT screen.

It has enhanced mould and die capability (scaling, mirror image, modal corner rounding/chamfering, for example), said Anilam to manufacturingtalk.com, as well as a host of canned cycles including mould rotation and draft angle.

It also features a cam programming mode for interactive programming using icons (moves shown as they are being programmed), menu-driven tooling, tool compensation and interference checking, as well as built-in post-processor.

Simulation graphic functions embrace rapid, feed and compensated moves (colour differentiated) isometric views, auto part fit, window zoom and static tool display, for instance.

Canned cycles include the following.

* Irregular pockets - a simple routine of prompts produces clearances of irregular shapes.

* Geometry - the geometry calculator, for determining points, lines and circles, automatically forms the program foundation.

* Bolt hole pattern and drill cycles are created by simple question and answer routines.

The 6000 Series CNC also features Anilam’s Integral Programmable Intelligence, so there is no need for a separate PLC unit and, compared to older CNC systems accompanied by a separate bank of drives, these are now housed in one compact module.

* Turning - for lathes, the 4200T turning control’s functionality includes create, delete/undelete, list, copy, rename and print, and the system also features constant surface speed as standard, to help guarantee consistent surface finish and extended tool life.

Also, the control can run in several operational modes - including teach mode achieved via single or dual handwheel operation with dual axis interpolation.

* Milling - the Anilam 3300 MK 3-axis milling CNC on show also features the Machinist’s Language coupled with a wide range of standard cycles such as peck drilling, bolt-hole patterns, pocket milling and face milling; advanced cycles including ellipse, spiral, helical, tapping, irregular pocket milling and profile milling, as well as special cycles that include counter boring.

* Borering machines - the stand at MACH 2008 will also highlight how the Anilam Commando CNC has for almost 30 years been synonymous with transforming the performance of manual borers, and in its latest guise harnesses the ease-of-use capabilities of Machinist’s Language in a Series 3000 CNC system.

In its new format driven by 8.1 Gbyte Intel hard drive, Commando complements its ability to automate machine positioning with the offer of on-screen editing and help graphics as well as DXF and G-code conversion to further save operator time and increase machine productivity.

* DROs - of the two Wizard DROs being shown, the 1-/2-/3-axis Anilam 411 (which complements the 4-axis Wizard 1000) is an ‘entry-level’ DRO.

It has powerful functionality, substantial technical service back-up and three-year warranty reassurances that belie its low-cost price tag making it incomparable with any other product available in the global low-cost DRO marketplace, said Anilam.

In addition to standard functionality embracing tool offsets, sub datums, linear patterns (row, frame, array), PCD calculations (full and partial) and vectoring, the ultra-reliable all diecast-constructed Wizard 411 sets itself apart from other systems courtesy of LCD screen (the only DRO available using this technology) plus sealed membrane keypad and powerful canned functions for incline, arc, rectangular frame and rectangular pocket routines.

Complemented by ENC 125 precision glass scales that boast a resolution of five microns and an accuracy rating of 10 micron/m, the Wizard 411’s ease of set-up and use is also signified by the fact that the system will be shopped with a two-page quick reference set-up guide rather than a handbook.

* Anilam at MACH 2008, NEC, Birmingham, UK, April 21- 25, Hall 5, Stand 5011.