Table of Contents

Class TappingCycleSyntax

Namespace
Hi.NcParsers.LogicSyntaxs
Assembly
HiMech.dll

G84 (right-hand) / G74 (left-hand) tapping cycles. Supports modal repetition.

Cycle sequence:

  1. Rapid to init position (target XY, previous Z)
  2. Rapid from init to R-point
  3. Feed from R-point to bottom Z
  4. Spindle reverse at bottom
  5. Feed retract to final Z (G98 → init Z, G99 → R)
  6. Spindle restore to forward direction

G84: forward = CW (M03), reverse = CCW (M04). G74: forward = CCW (M04), reverse = CW (M03).

Reads absolute coordinates from the cycle section, which is resolved by CannedCycleResolveSyntax (modal repetition, G91 conversion, missing-axis fallback) before this syntax runs. Must be placed after CannedCycleResolveSyntax and before IncrementalResolveSyntax in the syntax chain. 

public class TappingCycleSyntax : ISituNcSyntax, INcSyntax, IMakeXmlSource
Inheritance
TappingCycleSyntax
Implements
Inherited Members
Extension Methods

Examples

Both cases G98 — pre-populated CannedCycle, no #Previous: so initZ = 0, F=600 → 10 mm/s. Six items each: init, R, feed-down, spindle reverse, feed retract, spindle restore. The retract is a feed (not a rapid) because the tap is physically threaded into the workpiece and a rapid would strip the threads.

G84 right-hand — forward CW (M03), reverse CCW (M04) at the bottom to back out, then restore CW after retract:

#BeforeBuild: 
{
  "Parsing": { "G84": { "X": 50, "Y": 30, "Z": -10, "R": 2, "F": 600 } },
  "CannedCycle": {
    "Term": "G84", "ReturnMode": "G98",
    "Params": { "X": 50, "Y": 30, "Z": -10, "R": 2 }
  }
}
#AfterBuild: 
{
  "CannedCycle": {
    "Term": "G84", "ReturnMode": "G98",
    "Params": { "X": 50, "Y": 30, "Z": -10, "R": 2 }
  },
  "Feedrate": { "FeedrateValue": 600, "Term": "G94", "Unit": "mm/min" },
  "CompoundMotion": {
    "Term": "G84",
    "Items": [
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": 0 },   "MotionEvent": { "Form": "McLinear", "IsRapid": true } },
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": 2 },   "MotionEvent": { "Form": "McLinear", "IsRapid": true } },
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": -10 }, "MotionEvent": { "Form": "McLinear", "Feedrate_mmds": 10 } },
      { "SpindleControl": { "Direction": "CCW" } },
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": 0 },   "MotionEvent": { "Form": "McLinear", "Feedrate_mmds": 10 } },
      { "SpindleControl": { "Direction": "CW" } }
    ]
  },
  "ProgramXyz": { "X": 50, "Y": 30, "Z": 0 }
}
G74 left-hand — same shape but the two spindle items are flipped: forward CCW (M04), reverse CW (M03) at the bottom, restore CCW after retract. Tests that the syntax dispatches on cycleCode == G84 to pick the right pair: #BeforeBuild: 
{
  "Parsing": { "G74": { "X": 50, "Y": 30, "Z": -10, "R": 2, "F": 600 } },
  "CannedCycle": {
    "Term": "G74", "ReturnMode": "G98",
    "Params": { "X": 50, "Y": 30, "Z": -10, "R": 2 }
  }
}
#AfterBuild: 
{
  "CannedCycle": {
    "Term": "G74", "ReturnMode": "G98",
    "Params": { "X": 50, "Y": 30, "Z": -10, "R": 2 }
  },
  "Feedrate": { "FeedrateValue": 600, "Term": "G94", "Unit": "mm/min" },
  "CompoundMotion": {
    "Term": "G74",
    "Items": [
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": 0 },   "MotionEvent": { "Form": "McLinear", "IsRapid": true } },
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": 2 },   "MotionEvent": { "Form": "McLinear", "IsRapid": true } },
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": -10 }, "MotionEvent": { "Form": "McLinear", "Feedrate_mmds": 10 } },
      { "SpindleControl": { "Direction": "CW" } },
      { "ProgramXyz": { "X": 50, "Y": 30, "Z": 0 },   "MotionEvent": { "Form": "McLinear", "Feedrate_mmds": 10 } },
      { "SpindleControl": { "Direction": "CCW" } }
    ]
  },
  "ProgramXyz": { "X": 50, "Y": 30, "Z": 0 }
}

Constructors

TappingCycleSyntax()

Initializes a new instance with default settings.

public TappingCycleSyntax()

TappingCycleSyntax(XElement)

Initializes a new instance by deserializing from the given XML element.

public TappingCycleSyntax(XElement src)

Parameters

src XElement

Source XML element.

Properties

Name

Syntax kind name (typically the concrete type name).

public string Name { get; }

Property Value

string

XName

XML element name used to register this syntax with XFactory.

public static string XName { get; }

Property Value

string

Methods

Build(LazyLinkedListNode<SyntaxPiece>, List<INcDependency>, NcDiagnosticProgress)

Build syntax arrangement into the syntaxPieceNode in-place.

public void Build(LazyLinkedListNode<SyntaxPiece> syntaxPieceNode, List<INcDependency> ncDependencyList, NcDiagnosticProgress ncDiagnosticProgress)

Parameters

syntaxPieceNode LazyLinkedListNode<SyntaxPiece>
ncDependencyList List<INcDependency>
ncDiagnosticProgress NcDiagnosticProgress

MakeXmlSource(string, string, bool)

Creates an XML representation of the object. This method may also generate additional resources such as related files.

public XElement MakeXmlSource(string baseDirectory, string relFile, bool exhibitionOnly)

Parameters

baseDirectory string

The base directory for resolving relative paths

relFile string

The relative file path for the XML source

exhibitionOnly bool

if true, the extended file creation is suppressed.

Returns

XElement

An XML element representing the object's state

Remarks

For the demand of easy moving source folder (especially project folder) without configuration file path corruption, the relative file path is applied. The baseDirectory is typically the folder at the nearest configuration file folder. Since the folder can be moving with the configuration file.

Reg(XFactory)

Registers this type's deserializer with the given XFactory (or Default when factory is null). Idempotent.

public static void Reg(XFactory factory = null)

Parameters

factory XFactory