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Clamping Joint Calculators

Set parameters for calculation of clamping joints.

Use these calculators to calculate and design clamping joints. Three types of clamping joints are available:

• Separated Hub Joint
• slotted Hub joint
• Cone Joint

Procedures

Calculate separated joints

 On the ribbon, click Design tabPower Transmission panelSeparated Hub Calculator.In the Calculation tab, enter calculation parameters.Click Calculate to perform the calculation. Results are displayed in the Results area.If the calculation results are satisfactory, click OK to insert separated hub joint calculation to the Autodesk Inventor Assembly.

This procedure creates an example using the sample specifications.

Sample Data:

• Required Torque: T = 40-lb ft
• Clamping Factor: n = 0.08
• Shaft Diameter: d = 1 in
• Hub Length: L = 1.5 in
• Number of Joint Bolts: N = 4
• Material: steel grade 37
 Start the Separated Hub Joint Calculator.On the Calculation tab:In the Type of Strength Calculation, select Check Calculation.In the Load area, enter Torque = 40.In the Dimensions area, enter Shaft Diameter = 1.In the Joint Properties area, click the button next to the Material edit field, and select the material and type of loading from the database. Enter Clamping Factor = 0.08.In the Bolt Properties area, enter Number of Joint Bolts = 4.Click Calculate to perform a separated hub joint strength check. The optimum hub length is based on minimum hub length, joint strength, pressure values, and axial force in bolts.Click OK to insert separated hub joint calculation to the Autodesk Inventor Assembly.

Calculate slotted hub joints

 On the ribbon, click Design tabPower Transmission panelSlotted Hub Calculator.On the Calculation tab, enter calculation parameters.Click Calculate to perform the calculation. Results are displayed in the Results area.If the calculation results are satisfactory, click OK to insert slotted hub joint calculation to the Autodesk Inventor assembly.

This procedure creates an example using the sample specifications.

Sample Data:

• Torque: T = 45-lb ft
• Shaft Diameter: d = 1.0625 in
• Pitches:
• b = 1 in
• c = 0.9 in
• Material: steel grade 50
 Start the Slotted Hub Joint Calculator.On the Calculation tab:In the Type of Strength Calculation, select Hub Length Design.In the Load area, enter Torque = 45.In the Dimensions area, enter Shaft Diameter = 1.0625 and Pitches b = 1, c = 0.9.In the Joint Properties area, select Repeated Load and click the button next to the Material edit field, and select the material and type of loading from the database.Click Calculate to perform a separated hub design check. Click OK to insert slotted hub joint calculation to the Autodesk Inventor assembly.

Calculate cone joint

 On the ribbon, click Design tabPower Transmission panelCone Joint Calculator.In the Calculation tab, enter calculation parameters.Click Calculate to perform the calculation. Results are displayed in the Results area.If the calculation results are satisfactory, click OK to insert cone joint calculation to the Autodesk Inventor assembly.

This procedure creates an example using the sample specifications.

Sample Data:

• Torque: T = 20-lb ft
• Major Diameter D = 2.4 in
• Joint Length L = 5.5 in
• Material: steel grade 60
 Start the Cone Joint Calculator.On the Calculation tab:In the Loads area, enter Torque = 20.In the Dimensions area, select the D, L, Taper Ratio d option and enter Major Diameter = 2.4 and Joint Length = 5.5.In the Joint Properties area, click the button next to the Material edit field, and select the material and type of loading from the database. Enter Clamping Factor = 0.08.Click Calculate to perform a cone joint strength check. The optimum hub length is based on minimum hub length, joint strength, pressure values, and axial force in bolts.Click OK to insert cone joint calculation to the Autodesk Inventor assembly.TipClick the Results icon to create an HTML report.

References

Separated Hub Joint Calculator

Sets parameters for calculation of separated hub joints.

 Access: Ribbon: Design tabPower Transmission panelSeparated Hub Calculator

Results

Displays the calculated values and the joint strength check.

Summary of Messages area

Displays the reports about calculation. To open the Summary of Messages area at the bottom of the tab, double-click the double line at the bottom of tabs or click the chevron.

Toolbar Commands

Slotted Hub Joint Calculator

Sets parameters for calculation of slotted hub joints.

 Access: Ribbon: Design tabPower Transmission panelSlotted Hub Calculator

Results

Displays the calculated values and the joint strength check.

Displays the reports about calculations. To open the Summary of Messages area at the bottom of the tab, double-click the double line at the bottom of tabs or click the chevron.

Summary of Messages area

Displays the reports about calculations. To open the Summary of Messages area at the bottom of the tab, double-click the double line at the bottom of tabs or click the chevron.

Toolbar Commands

Cone Joint Calculator

Sets parameters for calculation of cone joints.

 Access: Ribbon: Design tabPower Transmission panelCone Joint Calculator
 Loads Loading is entered through torque. Dimensions Enter the dimensions of the cone hub joint. d, D, LTaper Ratio Calculates the pin taper ratio for the specified pin diameters and joint length. d, D, Taper RatioL Calculates the joint length for the specified pin diameters and taper ratio. d, L, Taper RatioD Calculates the major pin diameter for the specified taper ratio, minor pin diameter, and joint length. D, L, Taper Ratiod Calculates the minor pin diameter for the specified taper ratio, major pin diameter, and joint length. Joint Properties Type of Loading Using the roll-down menu, select the Type of loading. Material Check the check box to open Material Database and select a material. Edit the properties of the material, if needed. Allowable Pressure Allowable pressure in the joint is entered by selection from the list according to the joint character or by typing a value into the input field.

Results

Displays the calculated values and the joint strength check.

Summary of Messages area

Summary of Messages area opens at the bottom of the tab when you double-click the double line at the bottom of tabs or if you click the chevron at the bottom of the tabs. It displays the reports about calculation.

Toolbar Commands