Brown & Sharpe Machining
Cam Layout - Lesson 1
with Kathi Stringer
 

This is tutorial is 'still' in progress.  Mainly, it is missing all the instructions and the 'hows and whys.' 

Major UNDER CONSTRUCTION (Work on this as time allows - hang in there)
  

Step 1 - Enter the Operations
Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock              
Index              
Center              
Index              
Drill              
               
Form  (O-lapped)              
Rcs Cutoff (O-lapped)              
Rcs Cutoff              
Clear              

The Part: Simple Bushing

 
Diameter: .750 
Length:  .500
Hole Thru: .312
Champers: .015
  
Material:  Ledloy
SFM: 300

   
Step 2 - Enter Rise for Each Tool
Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock              
Index              
Center .312            
Index              
Drill Thru .665            
               
Form (O-lapped) .060            
Rcs Cutoff (O-lapped) .010            
Rcs Cuttoff .130            
Clear              

Center Drill - .176 Rise
.312 / 2 = .156 
Add approach .020 = .176 Rise

Drill Thru
.500 + .125 + .020  = .645

Form Tool
.015 + .010 = .025 (Use .060 min)

Rcs Cutoff
.500 - .300 = .200
.200 / 2 = .100 +.040 =.140
Overlapped = .010
Not Overlapped = .090 + .040 = .130

 
Step 3 - Enter the Feed 
Distance tool feeds into the work each turn of the spindle.
Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock              
Index              
Center .312 .005          
Index              
Drill Thru .665 .006          
               
Form (O-lapped) .060 .001          
Rcs Cutoff (O-lapped) .010 .0015          
Rcs Cuttoff .130 .0015          
Clear              
               
Totals              

Spindle Speed
.300 / .262 / .500 = 2290

 

  
Step 4 - Enter Revs for Each Cutting Tool
Rise/Feed = Revs 
Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock              
Index              
Center .312 .005 63        
Index              
Drill Thru .665 .006 111        
               
Form (O-lapped) .060 .001 60        
Rcs Cutoff (O-lapped) .010 .0015 7        
Rcs Cuttoff .130 .0015 87        
Clear              
               
Totals     321        

   
Step 4 - Enter Hunds (Hundreds) for Non Tools
Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock       4      
Index       4      
Center .312 .005 63        
Index       4      
Drill Thru .665 .006 111        
               
Form (O-lapped) .060 .001 60        
Rcs Cutoff (O-lapped) .010 .0015 7        
Rcs Cuttoff .130 .0015 87        
Clear       2      
               
Totals     321 14      

  
Step 4 - Enter Hunds (Hundreds) for Cutting Tools
Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock       4      
Index       4      
Center .312 .005 63 21      
Index       4      
Drill Thru .665 .006 111 37      
               
Form (O-lapped) .060 .001 60 19      
Rcs Cutoff (O-lapped) .010 .0015 7 3      
Rcs Cuttoff .130 .0015 87 29      
Clear       2      
               
Totals     261 101      

Total Revs
100 - 14 = 86
(261 / 86) * 100 = 303

Hunds Per Tool
Center: 63 / 303 = 21
Drill Thru: 111 / 303 = 37
Form:  60 / 303 = 19
Rcs Cutoff: 7 / 303 = 3
Rcs Cutoff: 87 / 303 = 29

Total Hunds = 4 + 4 + 21 + 
4 + 37 + 29 + 2 = 101

Problem: 101 Must be 100

Operation Rise Feed Revs Hunds Seq To Seq
Feed Stock       4 0 - 4
Index       4 4 - 8
Center .312 .005 63 21 8 - 29
Index       4 29 - 33
Drill Thru .665 .006 111 36 33 - 69
               
Form (O-lapped) .060 .001 60 19 50 - 69
Rcs Cutoff (O-lapped) .010 .0015 7 3 66 - 69
Rcs Cuttoff .130 .0015 87 29 69 - 98
Clear       2 98 - 100
               
Totals     261 100      

 
 
Operation Rise Feed Revs Hunds Seq To Seq
               
               
               
               
               
               
               
               
               

 
In Memory of my Instructor - Curt Wynn