I. Input Information

Default Assumptions

a. All parts are assumed to be rigid bodies unless otherwise specified.

b. All simulation results do not reflect changes caused by actual environmental conditions.

c. All simulation results do not reflect changes caused by thermal deformation, thermal expansion, vibration, etc.

d. All tolerance settings are normally distributed unless otherwise specified.

e. All part tolerance settings are based on 95.45%, ±2σ as input.

f. All simulation results are based on 99.73%, ±3σ statistical results, with the model simulating 5000 assembly cycles.

Calculation Objectives:

1. Gap between module and top cover

2. Gap between module and bottom frame

Assembly Instructions:

1. Install the bottom frame onto the AGV.

2. Automatically assemble the module onto the bottom frame using a fixture.

3. Position and install the top cover onto the top frame using a fixture.

Tolerance Definition: Bottom shell and AGV (same as above)

Tolerance Definition: Module assembly

Tolerance Definition:

II. Assembly Modeling

Assemble the bottom frame onto the AGV using multi-hole pin assembly.

Assemble the module onto the bottom frame using 321 assembly. When the module fixture grips the module, ensure all four holes enter simultaneously; therefore, additional iterations are required.

Assemble the top cover onto the bottom frame using 321 assembly.

III. Tolerance Definition

IV. Simulation Results

Distance between two points - Module to Upper

Distance between two points - Module to Lower

Distance between two points - Module to Upper Calculation results based on the new model gap 1.3. The probability of interference is only 0.07%.