Cutting, Shaping And Forming (Materials option)
Gbogbo ọrọ náà
Once a part is marked out it has to be brought to shape, and that means removing the material you do not want and forming what is left. Cutting, shaping and forming is the heart of practical workshop skill: choosing the right saw, file, drill, machine or CAM process for the material in front of you, and using it in a way that is accurate, efficient and safe. The same shape can often be reached several ways, and a designer who understands the processes makes the choice that gives the best result for the least effort.
This note works through cutting and material removal for woods, metals and polymers: the hand saws, files and chisels; the power and machine tools such as the pillar drill, scroll saw, lathe and sanding machines; the forming processes including line bending, vacuum forming and bending sheet metal; and the CAM routes of laser cutting and CNC routing. It explains how to match the process to the material and why each tool cuts the way it does.
Ebumnobi
- select and perform methods of cutting and removal of materials, using appropriate hand tools, power tools, machinery and/or computer-aided manufacture (CAM).
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
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Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Cutting, Shaping And Forming (Materials option). Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Which saw is most suitable for cutting a tight internal curve in thin acrylic? A. Tenon saw B. Rip saw C. Coping saw D. Junior hacksaw Answer: C
- Why should a fine-toothed blade be used to cut thin sheet metal? A. It cuts faster than a coarse blade B. It keeps at least three teeth in the cut so the saw does not snatch C. It is the only blade that fits a hacksaw D. Fine teeth clear large chips better Answer: B
- When drilling a large hole in mild steel, the spindle speed should be: A. As fast as possible B. Slow, often with cutting fluid C. The same as for a small drill D. Irrelevant to the result Answer: B
- Which process forms a crisp single fold in acrylic sheet? A. Vacuum forming B. Line bending (strip heating) C. Sand casting D. Steam bending Answer: B
- Which material must never be cut on a school laser cutter because it releases toxic fumes? A. Acrylic B. Plywood C. PVC D. MDF Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Cutting, Shaping And Forming (Materials option)? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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