Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1
Door Handle Solid Model
Door Handle Solid Model & Draft Analysis
DRAFT ANALYSIS
As from the isometric view the following Door Handle is analyzed with x,y and z axis.
X axis tooling direction analysis - It can be seen that extra side core is required to clear the part hence the x axis based tooling cannot is not considered.
Y axis tooling direction analysis - It can be seen that all portion of the part is cleared through this tooling direction and hence the y axis is considered for tooling.
Z axis tooling direction analysis - It can be seen that top hole remains and may require additional tooling to clear hence the z axis based tooling is not considered.
Further, the bisecting method is used to create tooling axis along y axis.
BISECTION METHOD
TOOLING CLEARING X DIRECTION
A cross section intersection along zy plane with respect to x axis is taken. With reference to the intersection (yellow dot lines) there are no parallel or slant edges. Therefore, a line is drawn with respect to vertical axis. The line denotes tooling clearing with respect to x direction.
TOOLING CLEARING Z DIRECTION
A cross section intersection along z direction is taken. As shown in the diagram the following edges are parallel to each other. Therefore a line is drawn parallel to edges and to the center between the edges. The line denotes tooling clearing with respect to z direction.
TOOLING AXIS
The tooling axis is created by selecting the line command and bisecting the tooling clearing line in x and z direction and a point. The tooling axis along z axis is achieved. The tooling axis is analzyed by the draft analysis where minimum draft angle is entered here it is 3 degree and the tooling direction is set upwards. Thus giving clearence in highlighted green.
As it can be seen the Class A surface is almost cleared (highlited in green) with draft angle of 3 degrees but certain area (highlited in blue) shows a draft angle less than 3. Some changes where made to tooling axis but the result obtained was similar. Hence it can be said that the class A surface with blue region requires a draft.
Door Handle Ribs & Screw Boss Draft Analysis
