Made gear properties editable
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Lars Brubaker
parent
bdd68a876b
commit
67a2689ccb
1 changed files with 61 additions and 21 deletions
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@ -66,14 +66,44 @@ namespace MatterHackers.MatterControl.DesignTools
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private double diametralPitch;
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private double addendum;
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private double clearance = .05;
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private double _clearance = .05;
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public double Clearance
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{
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get => _clearance;
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set
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{
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_clearance = value;
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CalculateDependants();
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}
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}
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// Most common stock gears have a 20° pressure angle, with 14½° and 25° pressure angle gears being much less
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// common. Increasing the pressure angle increases the width of the base of the gear tooth, leading to greater strength and load carrying capacity. Decreasing
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// the pressure angle provides lower backlash, smoother operation and less sensitivity to manufacturing errors. (reference: http://en.wikipedia.org/wiki/Involute_gear)
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private double pressureAngle = 20;
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private double _pressureAngle = 20;
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public double PressureAngle
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{
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get => _pressureAngle;
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private double backlash = .05;
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set
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{
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_pressureAngle = value;
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CalculateDependants();
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}
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}
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private double _backlash = .05;
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public double Backlash
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{
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get => _backlash;
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set
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{
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_backlash = value;
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CalculateDependants();
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}
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}
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private double profileShift = 0;
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private double shiftedAddendum;
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private double outerRadius;
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@ -97,7 +127,17 @@ namespace MatterHackers.MatterControl.DesignTools
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private double pitchRadius;
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private Vector2 center = Vector2.Zero;
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private Gear2D connectedGear;
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private double centerHoleDiameter = 4;
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private double _centerHoleDiameter = 4;
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public double CenterHoleDiameter
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{
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get => _centerHoleDiameter;
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set
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{
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_centerHoleDiameter = value;
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CalculateDependants();
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}
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}
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public enum GearType
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{
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@ -160,7 +200,7 @@ namespace MatterHackers.MatterControl.DesignTools
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}
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// creating the bar backing the teeth
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var rightX = -(this.addendum + this.clearance);
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var rightX = -(this.addendum + this.Clearance);
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var width = 4 * this.addendum;
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var halfHeight = ToothCount * this.CircularPitch / 2;
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var bar = new RoundedRect(rightX - width, -halfHeight, rightX, halfHeight, 0);
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@ -191,9 +231,9 @@ namespace MatterHackers.MatterControl.DesignTools
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var gearShape = tooth.wheel.Subtract(outlinePaths);
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if (this.centerHoleDiameter > 0)
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if (this.CenterHoleDiameter > 0)
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{
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var radius = this.centerHoleDiameter / 2;
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var radius = this.CenterHoleDiameter / 2;
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var centerhole = new Ellipse(0, 0, radius, radius)
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{
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ResolutionScale = 10
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@ -214,7 +254,7 @@ namespace MatterHackers.MatterControl.DesignTools
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// first we need to find the corner that sits at the center
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var centerCornerIndex = 0;
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var radius = this.pitchRadius + (1 + this.profileShift) * this.addendum + this.clearance;
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var radius = this.pitchRadius + (1 + this.profileShift) * this.addendum + this.Clearance;
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var delta = 0.0000001;
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for (var i = 0; i < corners.Count; i++)
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@ -256,7 +296,7 @@ namespace MatterHackers.MatterControl.DesignTools
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outerCorners = this._smoothConcaveCorners(outerCorners) as VertexStorage;
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var innerRadius = this.pitchRadius + (1 - this.profileShift) * this.addendum + this.clearance;
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var innerRadius = this.pitchRadius + (1 - this.profileShift) * this.addendum + this.Clearance;
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var outerRadius = innerRadius + 4 * this.addendum;
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var outerCircle = new Ellipse(this.center, outerRadius, outerRadius);
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// return outerCircle;
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@ -268,18 +308,18 @@ namespace MatterHackers.MatterControl.DesignTools
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private IVertexSource CreateRackTooth()
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{
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var toothWidth = this.CircularPitch / 2;
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var toothDepth = this.addendum + this.clearance;
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var toothDepth = this.addendum + this.Clearance;
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var sinPressureAngle = Math.Sin(this.pressureAngle * Math.PI / 180);
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var cosPressureAngle = Math.Cos(this.pressureAngle * Math.PI / 180);
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var sinPressureAngle = Math.Sin(this.PressureAngle * Math.PI / 180);
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var cosPressureAngle = Math.Cos(this.PressureAngle * Math.PI / 180);
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// if a positive backlash is defined then we widen the trapezoid accordingly.
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// Each side of the tooth needs to widened by a fourth of the backlash (vertical to cutter faces).
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var dx = this.backlash / 4 / cosPressureAngle;
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var dx = this.Backlash / 4 / cosPressureAngle;
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var leftDepth = this.addendum + this.clearance;
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var leftDepth = this.addendum + this.Clearance;
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var upperLeftCorner = new Vector2(-leftDepth, toothWidth / 2 - dx + (this.addendum + this.clearance) * sinPressureAngle);
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var upperLeftCorner = new Vector2(-leftDepth, toothWidth / 2 - dx + (this.addendum + this.Clearance) * sinPressureAngle);
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var upperRightCorner = new Vector2(this.addendum, toothWidth / 2 - dx - this.addendum * sinPressureAngle);
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var lowerRightCorner = new Vector2(upperRightCorner[0], -upperRightCorner[1]);
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var lowerLeftCorner = new Vector2(upperLeftCorner[0], -upperLeftCorner[1]);
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@ -361,15 +401,15 @@ namespace MatterHackers.MatterControl.DesignTools
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// we create a trapezoidal cutter as described at http://lcamtuf.coredump.cx/gcnc/ch6/ under the section 'Putting it all together'
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var toothWidth = this.CircularPitch / 2;
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var cutterDepth = this.addendum + this.clearance;
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var cutterDepth = this.addendum + this.Clearance;
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var cutterOutsideLength = 3 * this.addendum;
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var sinPressureAngle = Math.Sin(this.pressureAngle * Math.PI / 180.0);
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var cosPressureAngle = Math.Cos(this.pressureAngle * Math.PI / 180.0);
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var sinPressureAngle = Math.Sin(this.PressureAngle * Math.PI / 180.0);
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var cosPressureAngle = Math.Cos(this.PressureAngle * Math.PI / 180.0);
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// if a positive backlash is defined then we widen the trapezoid accordingly.
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// Each side of the tooth needs to widened by a fourth of the backlash (vertical to cutter faces).
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var dx = this.backlash / 2 / cosPressureAngle;
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var dx = this.Backlash / 2 / cosPressureAngle;
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var lowerRightCorner = new Vector2(toothWidth / 2 + dx - cutterDepth * sinPressureAngle, this.pitchRadius + this.profileShift * this.addendum - cutterDepth);
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var upperRightCorner = new Vector2(toothWidth / 2 + dx + cutterOutsideLength * sinPressureAngle, this.pitchRadius + this.profileShift * this.addendum + cutterOutsideLength);
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@ -414,7 +454,7 @@ namespace MatterHackers.MatterControl.DesignTools
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private IVertexSource _createInternalToothProfile()
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{
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var radius = this.pitchRadius + (1 - this.profileShift) * this.addendum + this.clearance;
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var radius = this.pitchRadius + (1 - this.profileShift) * this.addendum + this.Clearance;
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var angleToothToTooth = 360 / this.ToothCount;
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var sin = Math.Sin(angleToothToTooth / 2 * Math.PI / 180);
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var cos = Math.Cos(angleToothToTooth / 2 * Math.PI / 180);
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@ -426,7 +466,7 @@ namespace MatterHackers.MatterControl.DesignTools
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fullSector.LineTo(-radius, 0);
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fullSector.LineTo(-(radius * cos), -radius * sin);
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var innerRadius = radius - (2 * this.addendum + this.clearance);
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var innerRadius = radius - (2 * this.addendum + this.Clearance);
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var innerCircle = new Ellipse(this.center, innerRadius)
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{
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ResolutionScale = 10
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