Explain constructional features, and working of progressive die. Also state the functions of any four parts of progressive die.

Explain constructional features, and working of progressive die. Also state the functions of any four parts of progressive die. 
by

1 Answer

Answer :

Constructional features and Working of Progressive Die:

 A progressive die consists of the following parts.

1. Stop

2. Sheet metal

3. Pilot

4. Blanking punch

5. Ram

6. Piercing punch

7. Stripper Plate

8. Ddie

9. Bolster Plate 


In a progressive die two or more operations are performed simultaneously at two or more stations with each press stroke by mounting separate sets of dies and punch. The metal is progressed from one station to other. Figure shows progressive punching and blanking die .The sheet metal is fed into the first die where a hole is pierced by piercing die set in first cutting stroke of ram. The plate is then advanced in next station. In the second stroke of ram the pilot enters into the pierced hole and correctly locate it while the blanking punch descend and shear the plate to form a washer

image 

functions of parts of progressive die:

1. Pilots: The pilot positions, the stock strip accurately and bring it into proper position for blanking and piercing operations. They act as guides during the piercing or blanking operations.

2. Stops: The stops are used for correct spacing of the sheet metal as it is fed below the punch to give the greatest output in given length of the plate.

3. Stripper: To remove scrap material from the punch as it cleans the die block.

4. Bolster plate : this is a thick plate secured to the press bed which is used for locating and supporting the die assembly. It is usually 5 to 12.5 cm thick.

5. Die : The function of the die to produce the work in a press operation.

6. Blanking Punch: The function of the blanking punch is to produce blank.

7. Piercing punch: The function of piercing punch is to produce punched holes into the sheet metal. 

by

Related questions

Explain with sketch construction and application of progressive die.

Description : Explain with sketch construction and application of progressive die.

Last Answer : OR Construction A progressive die consists of the following parts.: 1. Stop 2. Sheet metal 3. Pilot 4. Blanking punch 5. Ram 6. Piercing punch 7. Stripper Plate 8. Die ... such as automotive, electronics and appliances. Example car brake caliper, washer, lid of a beverage can etc.

Sketch and explain a progressive die used to make washer.

Description : Sketch and explain a progressive die used to make washer.

Last Answer : Progressive Die: In a progressive die two or more operations are performed simultaneously at two or more stations with each press stroke by mounting separate sets of dies and punch. The metal is progressed ... locate it while the blanking punch descend and shear the plate to form a washer.  

Draw a neat sketch of progressive die.

Description : Draw a neat sketch of progressive die. 

Last Answer : progressive die

Explain following constructional details of CNC machines with neat sketches. (i) Hydrostatic slideways (ii) Recirculating ball screw and nut

Description : Explain following constructional details of CNC machines with neat sketches. (i) Hydrostatic slideways (ii) Recirculating ball screw and nut

Last Answer : (i) Hydrostatic slideways: In hydrostatic slideways, air or oil is pumped into small pockets or cavities into the carrieage or slides which are in contact with the slide ways. The pressure of ... nut strokes on the screw shaft, the balls repeat the same recirculation inside the return tube. 

Name four die accessories and write their functions.

Description : Name four die accessories and write their functions.

Last Answer : Die Accessories: 1) Stripper: To remove scrap material from the punch as it cleans the die block. 2) Pilots: The pilot positions, the stock strip accurately and bring it into proper position for ... . 6) Pressure Pad: It is used for drawing operation for maintaining flat surface of the cup. 

State the functions of the following die accessories: pilots, stops, strippers, pressure pad.

Description : State the functions of the following die accessories: pilots, stops, strippers, pressure pad. 

Last Answer : Answer: Functions of die accessories. 1. Pilots: The pilot positions, the stock strip accurately and bring it into proper position for blanking and piercing operations. They act as guides during the ... 4. Pressure pad: It is used for drawing operation for maintaining flat surface of the cup. 

Draw the neat sketch of fly press. Give the functions of important parts of it.

Description : Draw the neat sketch of fly press. Give the functions of important parts of it. 

Last Answer : Answer: OR Functions of important parts of Fly Press. 1. Ram : This is main operating part of the press which works directly during processing of a workpiece. Ram ... : A die is a specialized tool used in manufacturing industries to cut or shape material mostly using a press 

Explain construction and working of Combination Die with neat sketch.

Description : Explain construction and working of Combination Die with neat sketch.

Last Answer : Combination Die: In this both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram. Figure shows a combination of blanking and drawing die.In this ... as blank holder when the drawing punch descends and draws the blank into the desired shape.

List the parts of standard die set.

Description : List the parts of standard die set.

Last Answer : 1)Die 2)Die Block 3)Lower Shoe 4)Punch 5)Upper Shoe  6)Back Up Plate 7)Stripper

Draw neat sketch showing various parts of die set.

Description : Draw neat sketch showing various parts of die set. 

Last Answer : Answer: 1. Stop 2.Sheet metal 3.Pilot 4.Blanking punch 5.Ram 6.Piercing punch 7.Stripper 8.die Fig. Progressive Die OR

Draw neat sketch of compound die, showing various parts of it.

Description : Draw neat sketch of compound die, showing various parts of it.

Last Answer : Answer:

Draw schematic diagram of welding transformer showing constructional features of a welding transformer. Also explain its working.

Description : Draw schematic diagram of welding transformer showing constructional features of a welding transformer. Also explain its working.

Last Answer : Constructional features of welding transformer: Working of welding transformer: i) It is a step down transformer that reduces the voltage from the source voltage to a voltage desired according to the demands of ... 230 V, 415 V Secondary voltage - 40 to 60 V Secondary current - 200 to 600 A

Name four component of CNC machine and write their functions.

Description : Name four component of CNC machine and write their functions.

Last Answer : Components of CNC machines The various components of CNC system are :- 1) Program Input Device:- It is the medium of transmitting the part program to the computer. Three commonly used program input ... to facilitate a two way communication between the user, CNC system and the machine tool.

Explain the working principle of galvanizing process. Give its applications also.

Description : Explain the working principle of galvanizing process. Give its applications also. 

Last Answer : Galvanization or galvanisation or galvanizing is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are ... 5. All sort of containers 6. telegraph wire 7. fencing materials 8.Transformer parts

List out any four characteristics of forged parts

Description : List out any four characteristics of forged parts 

Last Answer : 1) Forging produces predictable and uniform grain size and flow characteristics and has directional toughness. 2) Proper orientation of grains ensures the fatigue resistance and maximum impact strength. 3) Grain ... The forged parts have higher density. 6) The strength to weight ratio is high. 

Enlist names of any four parts of automobile that can be manufactured by forging.

Description : Enlist names of any four parts of automobile that can be manufactured by forging.

Last Answer : Following are few automotive components that can be manufactured by forging Process: 1. Connecting rod 2. Crankshaft 3. Camshaft 4. Gears 5. Alloy wheel

With neat sketch explain the features of oxidizing flame and carburizing flame.

Description : With neat sketch explain the features of oxidizing flame and carburizing flame.

Last Answer : Oxidizing Flame: An oxidizing flame is one in which there is an excess of oxygen. The flame has two zones- the smaller inner cone which has purplish tinge, the outer cone or envelop.   Carburizing ... defined inner cone 2) An intermediate cone of whitish colour. 3) Bluish outer cone   

State salient features of CNC machines.

Description : State salient features of CNC machines.

Last Answer : Salient Features of CNC machines .. 1. A part program can be fed to the controller unit through a keyboard. 2. The part program once entered can be used again and again. That is why ... control unit allows compensation for any changes in the dimensions of cutting tools caused due wear or otherwise. 

Explain the importance of pressure pads in a die with neat sketch.

Description : Explain the importance of pressure pads in a die with neat sketch.

Last Answer : Importance of Pressure pad:  It is used for drawing operation for maintaining flat surface of the cup. A pressure pad presses against the material during L bending or U bending, and is used for ... . There is also the purpose of stripping off the material from the punch after forming.

Explain simple die with neat sketch

Description : Explain simple die with neat sketch

Last Answer : Simple Die: Simple die or single action dies perform single operation for each stroke of the press slide. The operation may be cutting or forming operation such as blanking, punching, piercing etc. ... are simple in construction and can manufacture by conventional machining processes.    

Explain closed die forging with neat sketch

Description : Explain closed die forging with neat sketch

Last Answer : Impression die & Closed die forging process: Closed Die forging is also known as impression die forging. Close die forging process consist of specially prepared dies to manufacturing forged parts in large ... of accuracy. Complex shaped parts can be easily forged by this forging process.  

(i) Compare Open Die Forging and Close Die Forging. (ii) Explain with neat sketch process of Drop Forging.

Description : (i) Compare Open Die Forging and Close Die Forging. (ii) Explain with neat sketch process of Drop Forging.

Last Answer : (i) Difference between Open Die and Close Die Forging: (ii)Drop Forging  Drop forging is carried out by using drop hammers. They are board or gravity hammer, air lift hammer and power drop ... of upper and lower dies. The ram is fastened to the lower end of vertical hard wood board.

Enlist die accessories and state function of knock out

Description : Enlist die accessories and state function of knock out

Last Answer : Die Accessories are as follows: 1) Stops a)Button stop b) Lever stop 2) Pilot a)Direct pilot b)Indirect Pilot 3) Knock out 4) Strippers a) Fixed stripper b) Spring ... Pad Knock out: The function of knock out is to eject the finished components from the die cavity. 

State “Plane washer” making process with use of combination die.

Description : State “Plane washer” making process with use of combination die.

Last Answer : (Note: The plain washers can be produced by using Compound die or Progressive die. It is not possible to use combination die for making plain washers, so consider compound die or progressive die for answer. ... Stop 2.sheet metal 3.pilot 4.blanking punch 5.ram 6.piercing punch 7.stripper 8.die

State the function of pilot and stopper in a die.

Description : State the function of pilot and stopper in a die.

Last Answer : Function of pilot and Stopper: Pilots: The pilot positions the stock strip accurately and bring it into proper position for blanking and piercing operations. They act as guides during the piercing or blanking ... it is fed below the punch to give the greatest output in given length of the plate. 

Explain working principle of CNC Machine.

Description : Explain working principle of CNC Machine.

Last Answer : Working principle of CNC Machine: In CNC machine, tape reader or any other input media is used for entry of part program. In CNC, entire program is first feed to the inbuilt computer memory. Once the ... . the part programmes can be stored in the memory of the computer and used in future.  

With neat sketch explain the working principle of CNC machines.

Description : With neat sketch explain the working principle of CNC machines. 

Last Answer : Working Principle of CNC machine:- A CNC machine also has a tape reader or any other input media for entry of the part program. CNC uses the part program in a different manner though there is ... to the reference. These two signals are compared and necessary action is controlled.   Or  

Explain the working principle of resistance welding with neat sketch.

Description : Explain the working principle of resistance welding with neat sketch. 

Last Answer : Resistance Welding Process: 1.Resistance Spot welding:  Spot welding is employed to join overlapping strips, sheets or plates of metal at small areas. The pieces are assembled between two ... welding small parts. Butt Welding provides joining with no loss of the welded materials.  

Explain the working principle of MIG welding with neat sketch.

Description : Explain the working principle of MIG welding with neat sketch.

Last Answer : MIG Welding: Gas-metal-arc welding is a gas shielded metal arc welding process which uses the high heat of an electric arc between a continuously fed, consumable electrode wire and the material to be ... will not combine with metal. Carbon dioxide is most commonly used as it inexpensive.

Name the different types of presses used in industry. State the working principle of press.

Description : Name the different types of presses used in industry. State the working principle of press. 

Last Answer : Types of presses used in industry: According to Source of power to ram: 1. Crank 2. Cam 3. Eccentric 4. Power screw 5. Rack and pinion 6. Toggle 7. ... ) hydraulic, mechanical, pneumatic and respectively working on principle of Pascal law, Mechanical Pressure and Pneumatic Pressure.

State the working principle of gas welding.

Description : State the working principle of gas welding.

Last Answer : Working principle of gas welding: Gas Welding is a fusion welding process. It joins metals, using the heat of combustion of the oxygen/air and combustible gas (i.e. acetylene, hydrogen, propane, ... the components to be forced together under pressure until the weld is forms and solidifies. 

Describe briefly any two die accessories.

Description : Describe briefly any two die accessories.

Last Answer : 1. Stops: The stops are used for correct spacing of the sheet metal as it is fed below the punch to give the greatest output in given length of the plate. 2. Pilots: The pilot ... 5. Pressure pad: It is used for drawing operation for maintaining flat surface of the cup   

Difference between compound and combination die.

Description : Difference between compound and combination die.

Last Answer : Compound die Combination die 1. Any two cutting operations can be performed at one station. 1. Both cutting and forming operations can be performed at one station. 2. Both operations performed in a ... operations performed. 5. e.g. washer 5. e.g. drawing cup shaped part.

Differentiate between open die forging and close die forging.

Description : Differentiate between open die forging and close die forging.

Last Answer : Difference between open die and close die forging:

List the materials used in press work for automobile components parts with example.

Description : List the materials used in press work for automobile components parts with example.

Last Answer : Materials used in press work: 1) Aluminium, 2) Copper, 3) Brass, 4) Mild Steel, 5) Galvanized iron (G.I) sheets, 6) Duralumin, 7) Y-alloys, 8) Naval Brass, 9) Cartridge Brass, ... 8) Carburettor bodies 9) Valves 10) Combustion Chamber 11) Cylinder heads , blocks,  12) Gear box cases

“Surface cleaning is necessary for machined parts.” Justify the statement.

Description : “Surface cleaning is necessary for machined parts.” Justify the statement. 

Last Answer : Necessity of Surface cleaning: Components, particularly those made of steel, get contaminated during and after production. Scale is formed on components after hot working. Castings get contaminated with sand. In workshop ... (b) to carry out further operations, and (c) to put it to practical use.

What is trimming? Why it is necessary for forged parts?

Description : What is trimming? Why it is necessary for forged parts?

Last Answer : Trimming: Trimming is the process of removing the flash around the edges of the finished forging in a separate press by trimmer dies. Trimming basically presses a part through a cutting die that runs ... the geometric accuracy 3. To obtain the surface finish 4. To obtain the good appearance 

Enlist any four operations carried out in forging process and explain fullering with neat sketch.

Description : Enlist any four operations carried out in forging process and explain fullering with neat sketch.

Last Answer : Operations carried out in forging process:  a) Upsetting b) Drawing Down c) Setting down d) Welding e) Bending f) Cutting g) Punching Fullering: In ... sledge hammer. The force is applied on the top fuller which results in decreasing the cross section at that point.

Explain any four reference position used on CNC machines.

Description : Explain any four reference position used on CNC machines. 

Last Answer : Reference positions used on CNC machine:   There are three reference positions on CNC machine: 1. Machine zero point 2. Work zero point 3. Tool home position 4.Reference point 1. ... by limit switches. The slide positions are reported to the control by the slides approaching.

State any four applications of resistance welding.

Description : State any four applications of resistance welding. 

Last Answer : Answer: Applications of resistance welding: 1. Resistance welding is widely used in automotive industries. 2. Projection welding is widely used in production of nut and bolt. Projection welding is ... welding is applied in manufacturing of wheel rims, wire joints and railway track joints etc. 

State the principle used in Lapping. List four applications of Lapping.

Description : State the principle used in Lapping. List four applications of Lapping.

Last Answer : Principle of Lapping: Lapping is basically an abrasive process in which loose abrasives function as cutting points finding momentary support of the lap. The process has the following features. (a) Use of ... roller bearings ii. Gears iii. Piston rings iv. Slip gauges v. Crankshaft.

State four advantages and limitations of forging.

Description : State four advantages and limitations of forging.

Last Answer : Advantages of Forging: 1. Strength: i. Forging reduces the failures. ii. High strength to weight ratio. iii. It can be able to withstand fluctuating stress caused by sudden shock loading. ... be produced by forging. 8. Rapid oxidation of metal surface at high temperature wears the dies.

State four advantages of CNC machines over conventional machines.

Description : State four advantages of CNC machines over conventional machines.

Last Answer : Advantages of CNC machines over conventional machines: 1) Greater machine utilization. 2) Complex machining operations can be easily done. 3) It gives high degree of accuracy. 4) It requires less ... is reduced. 15) Elimination of special jigs and fixtures. 16) Accurate costing & scheduling. 

State four advantages of welding.

Description : State four advantages of welding.

Last Answer : Advantages of Welding Process: 1) It produce permanent joint. 2) Large number of metals can be welded. 3) Freedom in design. 4) Strong and tight joining 5) Cost effectiveness 6) Simplicity of welded structures design 7) Welding processes may be mechanized and automated.

Describe the working principle of Arc Welding.

Description : Describe the working principle of Arc Welding.

Last Answer : Arc welding is the most extensively employed method of joining metal parts. Here the source of heat is an electric arc. The arc column is generated between an anode which is the positive pole of D.C. ... also melted and is transferred in to the metal in the form of globules of molten metal.  

Sketch and label different types of gas welding flames. Also give application of any one flame.

Description : Sketch and label different types of gas welding flames. Also give application of any one flame.

Last Answer : 1) Neutral Flame: - A neutral flame is obtained when equal amounts of oxygen and acetylene are mixed and burnt in a torch.   Applications: - stainless steel, cast iron, copper ,mild ... when acetylene is supplied more than oxygen.   Applications:-high carbon steel, nonferrous alloy 

Enlist any four forgeable materials.

Description : Enlist any four forgeable materials.

Last Answer : Following are the forgeable materials; Forgeable Materials:  1) Aluminium alloys 2) Magnesium alloys 3) Copper alloys. 4) Carbon and low alloy steels 5) Martensitic stainless steels 6) ... ) Columbium alloys 10) Tantalum alloys 11) Molybdenum alloys 12) Tungsten alloys 13) Beryllium.

List any four applications of forging process.

Description : List any four applications of forging process. 

Last Answer : Applications of Forging Process: 1. Connecting rod 2. Crankshaft 3. Camshaft 4. Spanner 5. Alloy wheel 6. Differential gears 7. Drive shafts 8. Clutch hubs 9. Universal joints 10. Hand Tools

Define forgeability and give any four forgeable materials used to produce automotive components.

Description : Define forgeability and give any four forgeable materials used to produce automotive components.

Last Answer : Forgeability Forgeability can be defined as the tolerance of a metal or alloy for deformation without failure. OR Forgeability is defined as the ability of a metal to change size and shape when ... Columbium alloys 10) Tantalum alloys 11) Molybdenum alloys 12) Tungsten alloys 13) Beryllium.

List any four factors affecting selection of surface finishing processes.

Description : List any four factors affecting selection of surface finishing processes.

Last Answer : Following factors will affect the selection of surface finishing processes: 1. Material of component 2. Basic machining operation carried out on component 3. Dimensions of component 4. Final value (in µm) of machined surfaces 5. Application of machined surfaces