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Messages - Brian Barker

831
General Mach Discussion / Re: Step losses in specific displacement
« on: August 08, 2007, 09:15:37 PM »
Can we see a pic of the axis that is giving you trouble ?

832
DSP is a nasty little device that can run a router.. it is a hand held device that sends down up to 25KHz and there is a 3 line LCD... You can't see the toolpath and it has bad CV :( if you get one I don't think you will like it :)

833
General Mach Discussion / Re: Mach Turn backlash?
« on: August 08, 2007, 09:09:03 PM »
There is no backlash in the pod :(

834
General Mach Discussion / Re: loosing steps in one direction
« on: August 08, 2007, 09:07:11 PM »
Try changing the step active low state ... It is worth a try :)

835
Did you get am small DSP hand held controler with the table? If you did send me a PM and I will tell you who to talk to...

Thanks
Brian

836
General Mach Discussion / Re: Mach Turn backlash?
« on: August 07, 2007, 08:38:28 PM »
I don't think the pod can do backlash :(

I will have to talk to Art about that!

837
General Mach Discussion / Re: Lathe Threading With Backlash
« on: August 07, 2007, 08:33:34 PM »
Dave.... I hate to be a party pooper but if you cut the grove you are making the shaft weaker...  The Grove is making what is called a stress concentration (takes me back to my senior design classes in collage). So the best is if you can have a grove with nice round corners at the bottom and no grove would be the best.

Sorry just wanted you to know
Brian

838
General Mach Discussion / Re: Lathe Threading With Backlash
« on: August 06, 2007, 10:04:09 PM »
Have a look at the 1076.m1s macro... this is your can cycle and you can change it to make you happy if you like

' 07/12/05 Fixed last pass for ID threads Brian
' 07/10/05 Added code for Dia/Rad mode for infeed and pullout.  Brian
' 07/05/05 Fixed the mindepth per pass code, and added a lock to keep it in the min depth. Brian
' 07/05/05 Added in the code for minDepth per pass and took out the number off passes from test. Brian
' Current as of 07/04/05 G32 added back in for infeed. --Art

' Code "G01 Z" & Z_pass_start Added to the infeed move to take the Z out of the in feed move           

' Date 11/14/04 G64 and G61 taken out to see if the G32 works better (thanks Steve).           

' No G64 or G61 in code so user can test.           

' Testing the problem with the depth           

' Notes are being added as work is done           

' Test added to the macro           

' Decrement bug fixed           

' Added call to GetMinPass 11/14/04 -- Art           

' Cleared default Chamfer. Program will set to optional default.           

' Set PI to value earlier in file so Retract_dis woudl be OK           

' Date 11/13/04 G61 and G64 added to the macro to see if it will fix the bad thread pass           

' also added was the chamfer in degrees default is now one pitch of the thread           

' min Decrement added default is .001 as a Test           

' 23/12/04 - Sandvik, Kennam sequences added - Rudy         

'1/9/05 - Added in the Macro calls for the Cut type and Feed Type. I also changed the code that sets the Z_Pass_Stat pos

'               The Calcs were done as ABS But now are done INC this was done for alt flank infeed.   

'--------------------------           

' To test set TEST = 1=true and it will write to a Teach.Tap and will add notes           

'           

Test = False        'test = false turns it off           

if GetUserLED(1053) then Test = True           

'           

'           

Min_Decrement = GetMinPass()  'test of min decement           

         

SetUserDRO 1240, tXStart()  'diagnostics fill           

SetUserDRO 1241, tEndX()           

SetUserDRO 1242, tZStart()           

SetUserDRO 1243, tEndZ()           

SetUserDRO 1244, tLead()           

SetUserDRO 1245, tTaper()           

SetUserDRO 1246, tClearX()           

SetUserDRO 1247, tFirstPass()           

SetUserDRO 1248, tFirstPass()           

SetUserDRO 1249, tInFeed()           

SetUserDRO 1250, tgetInfeedType()           

SetUserDRO 1251, tgetCutType()           

'           

PI = 4.0*atn(1.0)           

XClearance = tClearX()           

StartX = tXStart()           

StartZ = tZStart()           

EndX = tEndX()           

Total_depth = abs(StartX - EndX)           

'           

EndZ = tEndZ()           

Pitch = tLead()           

Taper = tTaper()           

InFeed_Angle = tInFeed()           

Spring_Pass = tSpring()           

First_pass_Depth = tFirstPass()           

Depth_Lastpass = tDepthLastPass()           

cut_type = tGetCutType()           

seq = tGetInfeedType()           

npass = GetUserDRO(1022)           

'           

Cut_Dir = 1       

MinDepth = 0
IF cut_type = 2 Then Cut_Dir = -1       

     

       

Retract_dis = tChamfer()           

Retract_dis = (Retract_dis * PI)/180           

Retract_dis = round ( ABS (StartX - EndX)* tan(Retract_dis) , 4 )           

'           

If IsDiameter() = 1 Then

Retract_dis = Round (Retract_dis /2 ,4)

End If
           

If test = true then           

   OpenTeachFile( "ThreadTest.tap")             

         

   Code "(Taper = " & taper & ")"           

   Code "(Infeed Angle = " & InFeed_Angle & ")"           

   Code "(Total_Depth = " & Round(Total_Depth,4) & ")"           

   Code "(StartZ = " & StartZ & ")"           

   Code "(EndZ = " & EndZ & ")"           

   Code "(Seq = "&seq & " )"           

   Code "(Min_Decrement = " & Min_Decrement & " )"
       If IsDiameter() = 1 Then

          Code "(Dia Mode )"

       Else

          Code "(Rad Mode )"

       End If                 
End If           

'           

'Section to see if the Thread is an OD or an ID Thread           

if StartX < EndX Then           

   ID_OD = -1           

Else           

   ID_OD = 1           

End if           

'           

' Section to see the direction of the Thread           

If StartZ > EndZ Then           

  Right_Left = 1           

else           

  Right_Left = -1           

End if           

'           

'Calc the infeed in radians from degrees           

InFeed_Angle = (InFeed_Angle * PI)/180           

'Calc the distance X needed to make the taper angle           

Taper = ABS (StartZ - EndZ-Retract_dis)* tan((Taper * PI)/180)           

'set last pass to 0           

Last_pass = 0           

'Feed per Rev mode for the out feed move           

Code "G95"           

'Start pass counter at 1           

Pass_counter= 1           

'           

'Move the tool into the start position plus X clearance           

Code "G0 X"&StartX+XClearance*ID_OD & " Z"&StartZ 'Move to start position if not there           

'Move to the X in to the start pos           

Code "G0 X" &StartX           



Z_pass_start = StartZ

         

'Do Loop is to rough out the thread           

DO           

   

           

' Calc Decrement and clip if necessary           

if seq = 1 then           

  if pass_counter = 1 then           

     Cut_Depth = (Total_depth/sqr(npass-1)*sqr(0.3))           

  else           

     Cut_Depth = (Total_depth/sqr(npass-1)*sqr(pass_counter-1))           

  end if           

else           

  Cut_depth = (First_pass_Depth*  pass_counter  ^ .5)           

end if           

'           


Decrement =  ABS(Cut_depth - Prev_Cut_Depth)           
 If  Decrement  < Min_Decrement OR MinDepth =1 Then           

     Cut_depth = Prev_Cut_Depth + Min_Decrement           

     Decrement = ABS(Cut_depth - Prev_Cut_Depth)
     MinDepth = 1           

     If test = true then Code "(Min decremant being used)"           


 End if           

'           

 Depth_pass_start=  StartX - Cut_Depth * ID_OD           

 Prev_Cut_Depth = Cut_Depth           

'           

' now do the thread line           

' This section is to test the depth and see if it is over           

' If it is over then set it to the last pass depth and set last_Pass to 1           

 If   ID_OD = -1 Then           

  If Depth_pass_start >= EndX -Depth_Lastpass Then           

    Decrement =  Decrement  - (Depth_pass_start - (EndX - Depth_Lastpass))           

    Depth_pass_start =  EndX -Depth_Lastpass           

     If test = true then  Code "(Last Pass ID_OD =-1)"           

    Last_pass = 1           

  End if           

 Else           

  if Depth_pass_start <= EndX +Depth_Lastpass Then           

    Decrement = Decrement - (EndX + Depth_Lastpass - Depth_pass_start)           

    Depth_pass_start = EndX +Depth_Lastpass           

     If test = true then  Code "(Last Pass ID_OD = 1)"           

    Last_pass = 1           

  End if           

 End if           

'           

 If test = true then Code "(Decrement = " & Round(Decrement,4) & " pass " & pass_counter & ")"           

'           

 'Calc the start point of the thread with respect to the infeed angle           


If IsDiameter() = 1 Then

ZinfeedShift =  ( ABS(Decrement) * Tan(InFeed_Angle)*Right_Left )/2

else

ZinfeedShift =  ( ABS(Decrement) * Tan(InFeed_Angle)*Right_Left )

End If   



 Z_pass_start= Round( Z_pass_start- Cut_Dir * ZinfeedShift,4)                 




'           

 ' Infeed move to start the thread           

 Code "G01 Z" & StartZ           

 Code "G32 X" & Round (Depth_pass_start ,4) & " Z" & Round (Z_pass_start ,4) & " F"&Pitch           

 Code "G32 X" & Round (Depth_pass_start + Taper * ID_OD ,4) & " Z" & Round (ENDZ +Retract_dis *Right_Left ,4) & " F" &Pitch           

 Code "G01 X" & Round (StartX+(XClearance+ Taper) * ID_OD ,4) & " Z" & Round (ENDZ,4)  & "F" & Pitch           

 Code "G00 X" & Round (StartX+XClearance * ID_OD ,4) &" Z"& StartZ           

 Code "G00 X" &StartX           

 Pass_counter = Pass_counter + 1           

 If  Last_pass =1 or Pass_counter = 200 Then           

  Exit do           

 End if           

'           

If cut_type =1 Then 'This code is for the alternating flank infeed     

   IF Cut_Dir = 1 Then   

      Cut_Dir = -1   

   Else 

     Cut_Dir = 1 

  End If 

End If 

Loop 

Call SetUserDRO(1022, pass_counter-1)           

IF Depth_Lastpass <> 0 Then           

  If test = true then Code "( Last pass at depth of " & Depth_Lastpass & ")"           

  Code "G01 Z" & StartZ           

  Code "G32 X" & EndX & " Z" & Round(Z_pass_start ,4) & " F"&Pitch           

  Code "G32 X" & Round (EndX + Taper* ID_OD  ,4) & " Z" & Round (ENDZ +Retract_dis *Right_Left ,4) & " F" &Pitch           

  Code "G01 X" & Round (StartX+(XClearance+Taper)* ID_OD ,4)  & " Z" & ENDZ  & "F" & Pitch           

  Code "G00 X" & Round (StartX+XClearance * ID_OD ,4)  &" Z"&StartZ           

  Code "G00 X" &StartX           

End if           

'           

IF Spring_Pass >0 Then           

Pass_counter= 0           

'           

  DO           

  If test = true then Code "( Spring pass number " & Pass_counter+1 & ")"           

    Code "G01 Z" & StartZ           

    Code "G32 X" & Round (EndX ,4) & " Z" & Round (Z_pass_start ,4) & " F"&Pitch           

    Code "G32 X" & Round (EndX + Taper * ID_OD ,4) & " Z" & Round (ENDZ +Retract_dis*Right_Left ,4) & " F" &Pitch           

    Code "G01 X" & Round (StartX+(XClearance+Taper) * ID_OD,4) & " Z" & ENDZ  & "F" & Pitch           

    Code "G00 X" & Round (StartX+XClearance *ID_OD ,4) &" Z" & StartZ           

    Code "G00 X" & StartX         

    Pass_counter = Pass_counter + 1           

  Loop While  Spring_Pass > Pass_counter           

End If           

Code "G00 X" & StartX + XClearance *ID_OD & " Z" & StartZ 
'           

If test = true then CloseTeachFile()           

If test = true then LoadTeachFile()           



839
LazyCam (Beta) / Re: Latest Vers of LazyCam?
« on: August 06, 2007, 09:55:15 PM »
Paul keep up the great work! You guys have found more bugs!!! I like the fact that you have found them , You need to tell my wife that it is okay for me to sit down for a month and get everything fixed ;) I have done many fixes in the past few days and HOPE to have many more done by the end of the week...

Thanks
Brian

840
LazyCam (Beta) / Re: Loading HPGL files
« on: August 06, 2007, 09:52:19 PM »
We did not write the code that gets the vectors from the files.... So we will have a look at it and if there is a problem we will report it to them

Thanks
Brian