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Tool definitions used on modified HobbyMat lathe with Dolphin PartMaster creating toolpaths
Author – Derek Mackenzie
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Lathe tool definitions
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1
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2
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3
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4
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5
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6
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11, 13
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12
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14
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16
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Tool dimensions
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Diamond
Symmetrical
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Small dia.
turner
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Radial
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Diamond
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Button
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Parting
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Rhombic
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Groove2
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Groove1
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D-bit groover
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Threader
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Tool type
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Turn
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Turn
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Groove
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Turn
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Groove
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Groove
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Groove
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Turn
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Turn
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Primary angle
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273
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270
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90
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275
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90
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90
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0
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240
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230
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Included angle
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55
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0
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0
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80
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0
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0
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0
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60
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80
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Tip radius
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0.4
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2.5
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0
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0.4
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0
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0
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0.5
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0
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0.4
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Z offset **
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0.4
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2.5
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0
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0.4
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0
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0
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0
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0
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0.4
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X offset **
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-0.4
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-2.5
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0
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-0.4
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0
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0
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0
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0
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-0.4
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Width
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0
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5
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2.18
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0
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1.25
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0.45
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3.12
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0
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0
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Cut depth
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3
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3
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19
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3
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3
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3
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7
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3
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5
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Note ** - sign changes with direction of feed
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Axial
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8
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9
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10
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11, 13
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12
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15
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Tool type
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Turn
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Turn
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Turn
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Groove
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Turn
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Turn
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Primary angle
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87
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0
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85
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0
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240
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40
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Included angle
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55
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0
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80
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0
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60
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-80
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Tip radius
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0.4
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2.5
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0.4
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0.5
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0
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0.4
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Z offset **
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0.4
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2.5
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0.4
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0.5
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0
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0.4
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X offset **
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0.4
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-2.5
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0.4
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0.5
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0
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0
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Width
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0
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5
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0
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3.12
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0
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0
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Cut depth
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3
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3
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3
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7
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3
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5
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Turret offsets
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Note - Button is the only axial with a negative X-offset - ODD
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Radial
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X
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NOTE: - all tools now mounted at same X - so set to 0
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n/a
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4.35
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0
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7.55
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Z <---->
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-34.88
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-29.15
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-32.44
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-33.93
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-31.21
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-30.41
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n/a
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-34.88
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Z diff *
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0
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-5.73
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-2.44
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-0.95
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-3.67
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-4.47
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n/a
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0
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actual Z diff *
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0
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-5.25
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-2.76
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-0.34
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-3.28
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-3.89
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n/a
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-0.75
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-7.8
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n/a
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Axial
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X
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**
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-20.3
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n/a
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**
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n/a
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n/a
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-23.49
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n/a
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-22.59
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Z diff *
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**
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14.75
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n/a
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**
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n/a
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n/a
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23.86
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n/a
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15.99
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Note:-
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X is positive towards lathe centre
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Z is negative towards chuck
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*
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relative to diamond tool 1
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Note:- Axial offset is also relative to diamond tool 1 - so axial and radial tools can be mixed in one cutting file
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**
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axial offsets not yet defined
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To create a tool - In Dolphin PartMaster V7
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Note V8 differs, but this is covered in the help file
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1. Start a new drawing
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2. Select File/import symbol - select LatheToolData.SYM
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3. Select Draw/symbol
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4. Click on "paper" - attributes screen appears - change attribute values
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5. Copy & paste tool shape
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6. Set origin at top left, perpendicular to tool tip for RH tool ******
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7. Select NC/contours for holder - name it "Holder"
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8. Select NC/contours or circle for tip - name it "Tip"
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9. Save
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10. Select machining/milling, then set all view options on to check the NC contours
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11. Make sure that all contours go counter clockwise ******
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******
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These are essential, if origin not set first, the tool display is centred on the tool holder
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if contours do not go the same way, the tool animation is ghostly
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Tool location in 4-way toolpost
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