Shaper machine is used for producing flat surfaces in the workpiece.
In this article, we will study Shaper Machine Definition, Parts, Working, Types, Operation, Advantages, Disadvantages, Application in very detail.
You can easily download PDF of the whole article from here. I have attached PDF just below the articles.
I have also discussed some important MCQ at the bottom which helps you to do your assignment and cover your exam question.
So let’s start,
Shaper Machine Introduction:
Shaper Machine is a reciprocating type of machine that is used for producing horizontal, vertical flat surfaces.
The workpiece is fixed on the table and the Ram holds the single point cutting tool.
During forwarding stroke, (the single point tools attached to the ram and workpiece is fixed on a table)
Shaper Machine Definition:
Shaper Machine is a production machine in which the single point cutting tools are attached and the workpiece is fixed and while moving forward the tool cuts the workpiece and in return, there is no cut on the workpiece and used for producing flat and angular surfaces.
Now coming to Shaper Machine Parts,
Shaper Machine Parts:
Shaper Machine consists of following parts:
- Cross rail
- Clapper Box
- Elevating Screw
Let’s understand one by one,
Base is most important parts of shaper because it holds all the loads of the machine.
It is made up of cast iron.
It absorbs vibration and other forces which occurs while performing shaping operation.
Column is mounted on the base. It is also made up of cast iron.
Column supports the ram that is moving forward and backward for operation. It also acts for covering the drive mechanism.
It is mounted on the saddle. It is also one of the important parts of the machine.
Table can be moved crosswise by rotating cross feed rod and also for vertical by rotating elevating screw.
It is a box like casting with accurately machined side and top surfaces.
These surfaces having T-Slots for clamping the work.
In heavier type shaper machine, table clamped with table support to make it more rigid.
It is also mounted on the column on which saddle is mounted.
The vertical movement and Horizontal movement is given to the table by raising or lowering the cross rail using the elevating screw and by moving the saddle using the cross feed screw.
The Ram reciprocates and it carries the tool head in which single point cutting tool is attached.
The tool head is in the clapper box, which causes cutting action only in a forward stroke of the ram.
The feed or depth of cut of the tool is given by down feed screw.
Shaper Machine Working:
In short, The shaper works on the principle of Quick return motion mechanism.
Let’s understand in depth,
As you can see the above diagram of Shaper machine, The tool is hold by Ram and workpiece is fixed over table.
When we switch on the power the ram reciprocates with respect to the table that means the cutting tool cuts workpiece material in the forward direction and when moving return there is no cut.
The cutting process take place at low speed of ram and return stroke take place at high speed.
With the use of hand transverse wheel we can do up and down of the table.
Now come to operation,
Shaper Machine Operation:
Generally, There are Four types of Operation performed on it that are:
- Vertical Cutting Operation
- Horizontal Cutting Operation
- Inclined Cutting and
- Angular or Irregular Cutting Operation
Shaper Machine Types:
There are nine different types of Shaper Machine:
- Standard Shaper
- Vertical Shaper
- Horizontal Shaper
- Geared Shaper
- Universal Shaper
- Crank Shaper
- Draw cut Shaper
- Hydraulic Shaper and
- Contour Shaper Machine
We will study these machine in detail, Let’s start:
Standard shaper is commonly use types of machine in the industry. During forward the cutting process occur and backward there is no cutting.
The movement of the tool in the vertical axis.
The work piece is kept on a table that can have a cross, longitudinal and rotational movement.
Vertical Shaper is widely used for cutting slots, key holes, grooves etc.
The ram holding the tool in a horizontal axis and the ram is reciprocating.
This type machine is also used for the production of flat surfaces, key-ways, external grooves, and more.
Very less industry using this type of machine now a days.
In a Geared shaper, rack and pinion arrangement is utilized to make the ram reciprocate for cutting operation.
The speed and direction of the traverse, depends on number of gears and its arrangement in the gear train.
The major advantages of Universal shaper is that, you can feed the table in all directions. Either horizontally, vertically or an inclined plane.
In this type of machine, you can also swivel the table about its own axis. This universal features enables to perform various types of operations on this machine.
It is also very common types of shaper. The tool (Single Point) is reciprocating in motion equal to the length of the stroke and the work is clamped in position on an adjustable table.
Draw cut shaper:
In this machine, the workpiece metal is removed during the return stroke of the Ram.
In this type of machine, the reciprocating motion of the ram is provided by the hydraulic mechanism. This Hydraulic shaper uses the oil under high pressure and end of the piston rod is connected to the ram.
The high-pressure oil first acts on one side of the piston and then on the other causing the piston to reciprocating and the motion is transmitted to the ram.
The main advantages of this machine the cutting speed and force of the ram drive are constant. From start to finish of the cut it does not makes noise and operates smoothly.
Shaper Machine Specification:
The following specification of shaper is:
- Weight of the Machine.
- Floor space required.
- Maximum stroke of Ram
- Drive types (Hydraulic, Gear and Crank type)
- Input Power
- Cutting to Return Stroke ratio
- Angular Movement of the table and
Advantages of Shaper Machine:
Following Advantages of Shaper Machine are:
- The tool (Single Point cutting tool) cost is low.
- The workpiece can be held easily in this machine.
- It produces flat or angular surfaces.
- Setup of Shaper is very easy and tool changing is also easy.
Disadvantages of Shaper Machine:
The following disadvantages of Shaper:
- The cutting speed is not much high.
- Only one cutting tool can be fixed. There is no option for more than one cutting tool.
Application of Shaper Machine:
The following application of Shaper are:
- Shaper Machine is used to make Internal splines.
- It generates straight and flat surfaces either horizontal, vertical or angular planes.
- It also makes gear teeth.
- Make keyways in pulleys or gears.
- It also Producing contour of concave/convex or a combination of these.
Important FAQs of Shaper Machine:
Shaper is a machine tool in the manufacturing industry that is used for removing material from a workpiece to produce a flat surface on the workpiece.
It consists of several different parts. Some of them are,
Ram Locking handle
Swivel base and more.
It works on a Quick return motion mechanism principle.
The following operation is performed:
Machining Horizontal, vertical, Inclined, Irregular surfaces and Cutting slots, keyways, grooves.
The different types of shaper machine are:
Crank, Geared and Hydraulic type
Push type and
Draw type of shaper Machine.