Revision as of 17:41, 10 February 2016

Post-Processors

When creating toolpaths for the PS1 Shopbot, there are now two distinct options:

Shopbot TC_PS1(Inch) and Shopbot TC_PS1(mm)
- For general usage of the Shopbot (typically cutting)
Shopbot TC_PS1-NO_SPIN(Inch) and Shopbot TC_PS1-NO_SPIN(mm)
- For dragging, engraving, and other tasks where the bit (may not actually be a bit) must not spin.

Be careful when creating a toolpath file that you select the right post-processor!

Positioning your work

Feeds and speeds

<title>Cutting</title> </head> <body>

Cutting Speed

Drilling

Cutting Speed [CS] is based on Surface Feet per Minute [FPM or SFM].
RPM = (Cutting Speed(ft/min) x 12/1(in/fr))/Diameter of Cutter(in) x pi
RPM = (12CS)/(pixD)

<COL width="190"> <COL width="190">
Material and Cutting Feed
Material Cutting Speed (FPM)

Low Carbon Steel 90

Alloy Steel SAE 4140 50

Cast Iron 70

Aluminum 300

<COL width="190"> <COL width="190">
Drilling Feeds
Drill Dia.(in) Feed per Revolution(in)

under 1/8 .001 to .002

1/8 to 1/4 .002 to .004

1/4 to 1/2 .004 to .007

1/2 to 1 .007 to .015

over 1 .015 to .025

Example

1/2 in drill, Low Carbon Steel

Dia = 0.50
Material LCS : 90

RPM = 12CS/piD = 1290/.5pi = 2160/pi = 687.5
Feed = .004-.007

<COL width="45"> <COL width="170">
Answer: 687.5 RPM

.004-.007 in. per Rev

REAMING

Speed - 1/2 - 1/3 the speed for drilling

Feed - 2-3 times the feed for drilling

MILLING

RPM = (12CS)/(pixD)

Feedrate = RPMxfxn
n = number of teeth
f = feed per tooth

<COL width="190"> <COL width="190"> <COL width="190">

Cutting Speed
Drill Dia.(in) Feed per Revolution(in)

Material High Speed Steel Cemented Carbide

Aluminum 300-800 1000-2000

Brass 200-400 500-800

Bronze 65-130 200-400

Cast Iron 50-80 250-350

Low Carbon Steel 60-100 300-600

Medium Carbon Steel 50-80 225-400

High Carbon Steel 40-70 150-250

Medium Alloy Steel 40-70 150-350

Stainless Steel 30-80 100-300

<COL width="190"> <COL width="190"> <COL width="190">
Example - 0.50 in HSS two flute end mill cutting aluminum

RPM = 12CS/piD = 12x300/.5pi = 2292 RPM
RPM = 12CS/piD = 12x800/.5pi = 6112 RPM

Feedrate = RPMxfxn = 2292x.005x2=23 IPM
Feedrate = RPMxfxn = 6112x.005x2=61 IPM

Feeds for End Mills (feed per tooth)
Cutter Al. Brass Bronze Cast Low Med High Stainless

Dia. ---- ----- ------ Iron Carbon Carbon Carbon Steel

------ ---- ----- ------ ----- Steel Steel Steel ---------

1/8 .002 .001 .0005 .0005 .0005 .0005 .0005 .0005

1/4 .002 .002 .001 .001 .001 .001 .0005 .001

3/8 .003 .003 .002 .002 .002 .002 .001 .002

1/2 .005 .003 .003 .0025 .003 .002 .001 .002

3/4 .006 .004 .003 .003 .004 .003 .002 .003

1 .007 .005 .004 .0035 .005 .003 .003 .004

1 1/2 .008 .005 .005 .004 .006 .004 .003 .004

2 .009 .006 .005 .005 .007 .004 .003 .005

<COL width="190"> <COL width="190">
Answer:
RPM Range: 2292 - 6112 RPM

Feedrate Range: 23 - 61 IPM

@@ Line 9: / Line 9: @@
 == Positioning your work ==
 == Feeds and speeds==
+<html>
+<head>
+<title>Cutting</title>
+</head>
+<body>
+<h1>Cutting Speed<br>
+<h2>Drilling<Br>
+<h3>Cutting Speed [CS] is based on Surface Feet per Minute [FPM or SFM].<br>
+RPM = (Cutting Speed(ft/min) x 12/1(in/fr))/Diameter of Cutter(in) x pi<br>
+RPM = (12CS)/(pixD)<br>
+<BR>
+<TABLE>
+<table border="1">
+<COL width="190">
+<COL width="190">
+<CAPTION ALIGN=TOP>Material and Cutting Feed</CAPTION>
+<TR><TD>Material </TD><TD>Cutting Speed (FPM)</TD></TR>
+<TR><TD>Low Carbon Steel    </TD><TD ALIGN=CENTER>90 </TD></TR>
+<TR><TD>Alloy Steel SAE 4140</TD><TD ALIGN=CENTER>50 </TD></TR>
+<TR><TD>Cast Iron</TD><TD ALIGN=CENTER>70 </TD></TR>
+<TR><TD>Aluminum </TD><TD ALIGN=CENTER>300</TD></TR>
+</TABLE>
+<BR>
+<BR>
+<BR>
+<TABLE>
+<table border="1">
+<COL width="190">
+<COL width="190">
+<CAPTION ALIGN=TOP>Drilling Feeds</CAPTION>
+<TR><TD>Drill Dia.(in)</TD><TD>Feed per Revolution(in)  </TD></TR>
+<TR><TD>under 1/8     </TD><TD ALIGN=CENTER>.001 to .002</TD></TR>
+<TR><TD>1/8 to 1/4    </TD><TD ALIGN=CENTER>.002 to .004</TD></TR>
+<TR><TD>1/4 to 1/2    </TD><TD ALIGN=CENTER>.004 to .007</TD></TR>
+<TR><TD>1/2 to 1      </TD><TD ALIGN=CENTER>.007 to .015</TD></TR>
+<TR><TD>over 1        </TD><TD ALIGN=CENTER>.015 to .025</TD></TR>
+</TABLE>
+Example<br>
+<br>
+/2 in drill, Low Carbon Steel<br>
+<br>
+Dia = 0.50<br>
+Material LCS : 90<br>
+<br>
+RPM = 12CS/pi*D = 12*90/.5pi = 2160/pi = 687.5<br>
+Feed = .004-.007<br>
+<TABLE>
+<table border="1">
+<COL width="45">
+<COL width="170">
+<TR><TD>Answer:</TD><TD>687.5 RPM </TD></TR>
+<TR><TD>       </TD><TD>.004-.007 in. per Rev</TD></TR>
+</TABLE>
+<H2>REAMING<BR>
+<H3>Speed - 1/2 - 1/3 the speed for drilling<BR>
+<H3>Feed   - 2-3 times the feed for drilling<BR>
+<H2>MILLING<BR>
+<H3>RPM = (12CS)/(pixD)<BR>
+<BR>
+Feedrate = RPMxfxn<BR>
+n = number of teeth<BR>
+f = feed per tooth<BR>
+<BR>
+<TABLE>
+<table border="1">
+<COL width="190">
+<COL width="190">
+<COL width="190">
+<CAPTION ALIGN=TOP>Cutting Speed</CAPTION>
+<TR><TD>Drill Dia.(in)</TD><TD>Feed per Revolution(in)  </TD></TR>
+<TR><TD>Material           </TD><TD>High Speed Steel</TD><TD>Cemented Carbide</TD><TR>
+<TR><TD>Aluminum           </TD><TD>300-800         </TD><TD>1000-2000       </TD><TR>
+<TR><TD>Brass              </TD><TD>200-400         </TD><TD>500-800         </TD><TR>
+<TR><TD>Bronze             </TD><TD> 65-130         </TD><TD>200-400         </TD><TR>
+<TR><TD>Cast Iron          </TD><TD> 50-80          </TD><TD>250-350         </TD><TR>
+<TR><TD>Low Carbon Steel   </TD><TD> 60-100         </TD><TD>300-600         </TD><TR>
+<TR><TD>Medium Carbon Steel</TD><TD> 50-80          </TD><TD>225-400         </TD><TR>
+<TR><TD>High Carbon Steel  </TD><TD> 40-70          </TD><TD>150-250         </TD><TR>
+<TR><TD>Medium Alloy Steel </TD><TD>40-70           </TD><TD>150-350         </TD><TR>
+<TR><TD>Stainless Steel    </TD><TD> 30-80          </TD><TD>100-300         </TD><TR>
+<TABLE>
+<table border="1">
+<COL width="190">
+<COL width="190">
+<COL width="190">
+<CAPTION ALIGN=TOP>Feeds for End Mills (feed per tooth)</CAPTION>
+<TR><TD>Cutter</TD><TD>Al. </TD><TD>Brass</TD><TD>Bronze</TD><TD>Cast </TD><TD>Low   </TD><TD>Med   </TD><TD>High  </TD><TD>Stainless</TD><TR>
+<TR><TD>Dia.  </TD><TD>----</TD><TD>-----</TD><TD>------</TD><TD>Iron </TD><TD>Carbon</TD><TD>Carbon</TD><TD>Carbon</TD><TD>Steel    </TD><TR>
+<TR><TD>------</TD><TD>----</TD><TD>-----</TD><TD>------</TD><TD>-----</TD><TD>Steel </TD><TD>Steel </TD><TD>Steel </TD><TD>---------</TD><TR>
+<TR><TD>1/8   </TD><TD>.002</TD><TD>.001 </TD><TD>.0005 </TD><TD>.0005</TD><TD>.0005 </TD><TD>.0005 </TD><TD>.0005 </TD><TD>.0005    </TD><TR>
+<TR><TD>1/4   </TD><TD>.002</TD><TD>.002 </TD><TD>.001  </TD><TD>.001 </TD><TD>.001  </TD><TD>.001  </TD><TD>.0005 </TD><TD>.001     </TD><TR>
+<TR><TD>3/8   </TD><TD>.003</TD><TD>.003 </TD><TD>.002  </TD><TD>.002 </TD><TD>.002  </TD><TD>.002  </TD><TD>.001  </TD><TD>.002     </TD><TR>
+<TR><TD>1/2   </TD><TD>.005</TD><TD>.003 </TD><TD>.003  </TD><TD>.0025</TD><TD>.003  </TD><TD>.002  </TD><TD>.001  </TD><TD>.002     </TD><TR>
+<TR><TD>3/4   </TD><TD>.006</TD><TD>.004 </TD><TD>.003  </TD><TD>.003 </TD><TD>.004  </TD><TD>.003  </TD><TD>.002  </TD><TD>.003     </TD><TR>
+<TR><TD>1     </TD><TD>.007</TD><TD>.005 </TD><TD>.004  </TD><TD>.0035</TD><TD> .005 </TD><TD>.003  </TD><TD>.003  </TD><TD>.004     </TD><TR>
+<TR><TD>1 1/2 </TD><TD>.008</TD><TD>.005 </TD><TD>.005  </TD><TD>.004 </TD><TD>.006  </TD><TD>.004  </TD><TD>.003  </TD><TD>.004     </TD><TR>
+<TR><TD>2     </TD><TD>.009</TD><TD>.006 </TD><TD>.005  </TD><TD>.005 </TD><TD>.007  </TD><TD>.004  </TD><TD>.003  </TD><TD>.005     </TD><TR>
+Example - 0.50 in HSS two flute end mill cutting aluminum<BR>
+<BR>
+RPM = 12CS/piD = 12x300/.5pi = 2292 RPM<BR>
+RPM = 12CS/piD = 12x800/.5pi = 6112 RPM<BR>
+<BR>
+Feedrate = RPMxfxn = 2292x.005x2=23 IPM<BR>
+Feedrate = RPMxfxn = 6112x.005x2=61 IPM<BR>
+<TABLE>
+<table border="1">
+<COL width="190">
+<COL width="190">
+<CAPTION ALIGN=TOP>Answer:</CAPTION>
+<TR><TD>RPM Range:     </TD><TD>2292 - 6112 RPM</TD></TR>
+<TR><TD>Feedrate Range:</TD><TD> 23 - 61 IPM   </TD></TR>

Difference between revisions of "Shopbot User Tips"