Week 6:- Clamp Unit & Pin-Clamp Unit Design Challenge
AIM
To create a Clamp and pin unit for the given part using CATIA V5.
INTRODUCTION
Clamp Unit:
This unit is designed to hold the car panel with NC Blocks / Mylars / Rest by using a Pnuematic Clamp Cylinder.
To Design a Clamp Unit we need the follwing Parts to be assembled properly.
- Clamp Arm
- Rest Mylar
- Clamp Mylar
- Shim
- Blade
- Riser
- Pnuematic Cylinder
Mylar
MYLAR is one kind of block that touches the panel and holds or clamps the panel. Mylars are always designed in CAR LINE.
Mylar is also called NC(Numerically Controlled)Block. Mylars are mounted on any block or plate with Shimming, So that height of mylar can be adjusted accordingly at the assembly level.
For ‘A’ class surfaces Nylon mylars are used. So that surface can be saved from scratches.
Clamp Mylar:
Rest Mylar
Clamp Arm
The arm helps in opening and closing of the mylars with the rest mylars .
SHIM
Shim is a set of thin plates (4mm, 2 mm, 1mm, 0.5 mm, 0.25mm) that are used to adjust the gap or used for a better fit.
BLADE
The plate which connects Riser to the Clamp cylinder is named Blade.
This plate plays an important role in building the unit. The plate can be of any shape. But we need to keep in mind that the plate should be as compact as possible.
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.
PNUEMATIC CYLINDER:
Pneumatic cylinder(s) (sometimes known as air cylinders) are mechanical devices which use the power of compressed gas to produce a force in a reciprocating linear motion.
CLAMP UNIT WITH PIN
PIN
Pins are used to locking the rotational movement of the panel.
Generally there two types of Pins, one is Round Pin and another one is a Diamond pin.
We use two and three-directional shimming for pins as per the angle of the pin w.r.t. the carline.
In some cases, we use a collared pin, when the pin is supposed to support the panel as well.
PIN RETAINER:
Pin Block is also called Pin Retainer.
This block holds the pin and restricts the rotational motion of the pin.
Pin Block can be either manufactured one or Standard.
BLOCK:
This part is used as a connection between mylar and Blade.
Generally, blocks are used to provide shimming.
It is not necessary that 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.
UNITS
Clamp Unit 01:
Clamp Unit 02:
Clamp with pin unit:
Clamp Unit 03 :
