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method_3d year.doc
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Exercises

1. Learn the following words and word combinations:

bending -згинання

projection -рельєф

shearing -зрізування

staking -закарбування

yield strength -зворотня сила

tensile strength -сила напруги

die -матриця, прес-форма

ram -прес-штемпель

brakes -гальма

punch -перфоратор

resistance projection welding -рельєфне зварювання

blunt conical type -тип тупого конусу

stock -заготівка

preliminary -попередній, завчасний

burr -задир

2. Read and translate the text.

3. Answer the following questions:

  1. What is bending?

  2. What can be produced by bending?

  3. What is called air bending?

  4. What presses are used for specialized applications?

  5. What is bottoming?

  6. What can be welded using the process of projection?

  7. How many projection types are there?

  8. What is shearing?

  9. What does the shearing process produce?

  10. The act of deformation causes radial expansion of the inner part and locks it in the hole, doesn’t it?

4. Translate from Ukrainian into English.

  1. Згинання – це гнучкий процес, за допомогою якого можуть бути виготовлениі різноманітні форми.

  2. Рельєфне зварювання – це різновид точкового зварювання.

  3. Рельєфи, як правило, полусферичні або у вигляді тупого конусу.

  4. Зрізування використовуються як попередній крок для підготування заготівки для процесу штамповки.

  5. Процес зрізування утворює задир кромки, який може бути зменшений до 10% товщини матеріалу.

5. Combine the following words to get proper terms:

surface radius

air type

press welding

back step

material expansion

inner area

semi-spherical bending

projection brakes

preliminary gages

radial thickness

6. Make the nouns from the verbs:

To project, to stress, to deform, to press, to classify, to form, to connect, to shield, to place, to consider.

7. Put the verbs in brackets in the correct form.

  1. The material (to stress) beyond the yield strength but below the ultimate tensile strength.

  2. The material (to place) on the die, and (to position) in place with stops or gages.

  3. This (to call) air bending.

  4. Usually the same angle (to use) in both the punch and the die to minimize setup time.

  5. Projections (to design) in one part.

  6. Shears (to use) as the preliminary step in preparing stock for stamping processes.

  7. The act of deformation (to cause) radial expansion of the inner part and (to lock) it in the hole.

8. Fill in the gaps with the proper prepositions.

  1. The upper part ... the press, the ram ... the appropriately shaped punch descends and forms the v-shaped bend.

  2. Bending usually refers ... deformation about one axis.

  3. Large and small presses are used ... specialized applications.

  4. This makes ... a controlled angle ... very little spring back.

  5. This process is known ... Resistance Projection Welding, RPW.

  6. Shearing is a process ... cutting sheet metal ... size out ...a larger stock such ... roll stock.

  7. Shears are used ... the preliminary step ... preparing stock ... stamping processes.

  8. Staking is a method ... fastening ... squeezing protrusion formed ... one part inside a hole ... the second part, and then deforming the protrusion.

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