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Title: btec level 2 unit 14 ass 1
Description: i got a Distinction star in this course and you can get much help from my work. its about mechanical workshop.
Description: i got a Distinction star in this course and you can get much help from my work. its about mechanical workshop.
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Task 1 (p1)
Three different types of secondary machining techniques are:
a
...
Milling
c
...
Turning
:
(Reference: directindustry
...
And the name of a machine is called lathe
...
Centre lathe are the most
common lathe we use in our engineering workplace
...
● Parting: It is use when a cutting operation is required
...
An example would be cutting
off the head of a bolt
...
● Drilling: It is use to remove material from inside a workpiece
...
● Screw cutting: Similar to turning, but the tool is applied to the workpiece at a specific
angle to allow a thread to be created
...
In turning, they have workpiece in cylindrical shape which is located in a chuck and rotated
...
Rod is placed inside the chuck and cut or
remove materials by cutting tools
...
Depending upon a tools they can make any shape
...
(reference: took a picture of my own project)
...
M
:
It is a process of using machine to remove materials to produce complex shapes
...
Milling cutter
comes in different shape, sizes and types
...
The basic method of milling are:
● Vertical milling:
(Reference: tradegateway
...
The cutting tools is vertical, or perpendicular to the table
...
More complex vertical milling machine can
work at different angles, and can produce chamfered edges on the workpiece
...
Slot drills: These cutter with two or three teeth can be used to cut profiles and usually
used to go straight to a metals to form flatbottomed holes, slots or pockets
...
End mills: These cutter with four or more teeth mainly used to cut a profiles
...
3
...
●
Horizontal milling:
(Reference: dir
...
com)
On horizontal milling, the cutter spins on an axis parallel to the ground
...
They have two method of cutting a materials and they are:
1
...
downcutting milling
c
...
en
...
com)
It is an operation to create circular holes in a workpiece
...
It is mainly used to drill a
holes
...
It is positioned in a chuck
...
d
1
...
Place the drill bit in the chuck
...
Second step
...
3
...
Clamp the workpiece in a vice underneath the drill bit
...
Fourth step
...
5
...
Using the leer force the drill bit through the material
...
Sixth step
...
Seventh step
...
Task 2(P2)
The three different workholding device for three different techniques are:
a
...
Chucks:
(Reference: sites
...
com)
A chuck is a special device that holds the material to be cut in a piece
...
A workpiece should be in cylindrical round shape like rods
so it can grip tightly in the centre of a chuck
...
2
...
It is placed on a faceplate
that is magnetised
...
This device often use on a cylindrical grinders
...
3
...
This has a three jaws that gently rest on the workpiece
...
And it is strong enough to prevent workpiece
from moving during machining
...
Milling
b
...
Machine vices:
This method is most commonly used method of holding on a milling machine
...
They can easily hold
a square and rectangular shape of workpiece by setting dial test indicator which gives accurate
positioning
...
Fixtures:
This device is made for mass production
...
The clamps are built into the fixture in set position
...
3
...
it hold a
round bar horizontally and machined
...
A hexagon and octagon shape can
produce by using this method
...
Dr :
illing
Three workholding device for drilling are as follows:
1
...
They have a flat base which allows them to clamped to the
worktable
...
Rotary tables:
This device is used to hold a workpiece which is similar to a indexing heads
but it has divisions around the edge to indicate the angle that has been moves
...
3
...
Task 3 (P3)
Three different tools for a three different technique are:
a
...
Left hand and right hand cutting tools:
This tools are used to cut along the length of a bar and creates a diameter
...
Parting off tool:
This tool is in rectangular shapeshaped which is in thin shape
...
3
...
b
...
HIgh speed steel(HSS):
This tools is used for cutting mild steel, but overheating make a cutter soft
...
65 to 0
...
5 to 4
...
2
...
it is made of tungsten carbide
or mixture of tungsten carbide
...
3
...
They are
indexable which means they can be rotated or flipped without disturbing the overall geometry of
a tools
...
Drilling
:
Three tools for drilling are as follows:
1
...
This drill is use for the preparation for a twist drill to hole
...
2
...
This tools prevent the edges of holes becoming damages by making edges safe from sharp
corners
...
machine reamers:
This tool is described as a accurate twist drill which is used after a twist drill
has produced a hole
...
This drill make accurate and smooth
diameter of the hole
Title: btec level 2 unit 14 ass 1
Description: i got a Distinction star in this course and you can get much help from my work. its about mechanical workshop.
Description: i got a Distinction star in this course and you can get much help from my work. its about mechanical workshop.