Week 5:- Rest Unit & Clamp Unit Design Challenge

PROJECT : WEEK 5 REST UNIT & CLAMP UNIT DESIGN.

AIM : TO DESIGN 3 DIFFERENT TYPES OF POWER CLAMP UNIT & 2 DIFFRENT TYPE OF REST UNIT FOR GIVEN CAR PANEL.

GIVEN :  

    

- We have this car panel stp file in which we need design clamp unit & rest unit following the design methology.

INTRODUCTION.

CLAMP UNIT :

- A clamp unit is a unit designed to clamp / hold the car panel with NC blocks / mylars / rest by using a pnewmatic clamp cylinder.

      

                                            fig : 1 Clamp unit 

- Clamping force is to be considered while designing the clamp unit.

Parts of clamp unit :

- Pnewmatic cylinder

- Clamp arm

- Finger / mylars

- Shims

- Risers

- Blocks

1. Pnewmatic Cylinder :

- The pnewmatic cylinder converts the pressure energy of compressed air medium into mechanical energy in form of linear or rotary motion.

      

- Above images shows pnewmatic cylinder with clamp arm assembly.

- Which i have used in my design.

2. Clamp arm.

- Clamp arm tha name suggest its a arm which is assembled with the cylinder , which gets connected to the clamp mylar with help of screw , nuts or bolt etc.

- It can rotate upto 180 deg to perform the operation of clamping & fixing.

- It is one the major part & important part of clamp unit.

    

3. Finger / mylars :

- Mylars are the part which holds the car panel.

- There are two types of mylars : Clamp mylar & Rest mylar.

- The mylar which will be mounted with the clamp is the clamp mylar & the mylar which is rested is rest mylar.

4. Shims :

- Shims are the reactangular blocks that are placed between two parts to provide proper support to both the parts. And to be merge properly.

- Shims are in set of five packs thar are 2mm , 1mm , 1mm , 0.5mm , 0.5mm etc.

   

4. Riser :

- The part which is mounted on the base plate and holds a clamp or pin cylinder on it, is called Riser. Riser can be Standard Part or manufactured part, it varies from project to project. A riser can be a Single part    or welded part. Standard risers also have various shapes and sizes.

  

5. L Block :

- A plate shaped as L is called an L block. This part is used as a connection between mylar and Blade. Generally, L blocks are used to provide shimming. It is not necessary that L blocks are only used for                  shimming, its uses changes as per the requirements, At some places, it is used just to connect one part to another. Similar to the L block one more block is used which is in the shape of T. So this block is called    a T Block.

TYPES OF CLAMP UNIT :

1. POWER CLAMP UNIT

2. SWIVEL TYPE CLAMP UNIT

DESIGNING POWER CLAMP UNIT :

- First consideration before starting design of clamp unit is the location of clamp unit in the car panel.

- We cant place the clamp unit on any curved or uneven surfaces , on the emboss surface etc.

- We have to place it on a straight surface & also have to ensure it have not collides with any others parts of fixture assembly.

POWER CLAMP UNIT DESIGN 1 :

- First power clamp unit I have designed with two clamp & two rest mylars.

- Elbow to support & connect the mylars with clamp arm , Riser & L block.

Mylar design :

    

Elbow support design :

    

Pnewmatic cylinder :

- We have standard pnewmatic cylinders from NAAMS , which I imported into catia to use in my design.

   

Riser design :

   

Elbow support block design :

   

L Block design :

    

ASSEMBLY :

   

POWER CLAMP UNIT DESIGN 2 :

- In the clamp unit I have designed single clamp & rest mylars.

mylar design :

Riser :

   

- In this design I have directly mounted mounted with clamp arm & Riser so that we dont need extra parts like Blocks , Support etc.

ASSEMBLY :

   

POWER CLAMP UNIT DESIGN 3 :

- In this design I have designed L type riser , L block & Single mylars to mount with clamp arm & Riser.

Mylars design :

L type riser design :

   

L block design :

   

ASSEMBLY :

    

    

DESIGNING THE REST UNIT :

- Rest unit are the unit designed just to support the car panel from the bottom.

- Which includes Mylars , Risers & Blocks etc.

REST UNIT DESIGN 1 :

Mylar design : 

   

Riser design :

    

ASSEMBLY :

    

DESIGNING REST UNIT 2 :

- In this designed I have designed L type riser.

mylars design :

   

Riser design :

   

ASSEMBLY :

   

CONCLUSION :

- With this I conclude here designed 3 types of power clamp unit & 2 types of rest unit following the design methology.