Machining and CNC: Processes, Techniques, and Applications

Machining and CNC

15—Free—Tied Up---By—should---Take—Thursday—Make—Say—Then—confirm—short—On—until

16---Logistics manager—Outsource---Inventories---Competitive market---Trends---Product cycle times

17—Match these phrases diagram 1B—2E—3G—4I—5D—6A---7C—8F—9H—10J

18---Comparative Adverb---Prints faster---Runs better---Cuts worse---Get up earlier---Drives more carefully---Finished later---Work harder

19-- have—repaired---was—Isoldered—ordered—called-- haven´t had

20—Predictions---Resist---Store---Replace---Perform---Take---Send---Remove---Clean up---Wear---Stop

Possibilities 2-Steel springs. He wants them made in plastic

Exercise 4- (1 d) (2a) (3c) (4b) (5e)

21---True—False---True---False---False---True---False—

1-The audience is shown the box 2- The lid is placed on the box 3-The lid is fastened 4-The bow is turned around 5-The box is sawn in half 6-The two halves of the box are separated 7-The box is put back together again 8-The audience is surprised

18---Conversation 1: Gears – quality---Conversation 2: Fuel pump – cost---Conversation 3: Parts list – Time

Conversation 1
The supplier has gone out of business---2Because they won’t meet the specs---3They decide to find another supplier

Conversation 2---1It is unreliable---2because it is obsolete---3Because they can’t afford it

Conversation 3---1The software is slow---2Someone will have to install the software and maintain it---3Outsource the drawing work

Use correct verbs-----Outsource---Have---Upgrade---Use---Works---Is—Cut

How much energy can the rays that emanate from the sun produce? The rays that emanate from the sun can produce nearly 1,000 watts of energy for every square meter of the earth’s surface.

What does every solar panel contain? Every solar panel contains many different silicon cells or solar cells.

What happens to the excess electricity that is not used? Excess electricity that is not used can be fed back to the grid.

Where are the photovoltaic cells found? These cells are commonly found on the front of calculators and small gadgets.

What are photovoltaic cells made up for? Photovoltaic cells are made up of semi conductive materials such as silicon

Machining

Machining is the use of machines to cut or shape metal parts using machine tools.

It goes without saying that it is an abrasive process that involves a lot of heat, a coolant fluid being used in the process, and material scraps called chips or swarf.

Regarding this process, it is generally done with the help of computer numerical control (CNC) computers which receive the information from the design software (CAD/CAM) that tells them the size and shape.

Last but not least, the most common machining techniques are, for example:

Milling

Firstly, milling which uses very sharp serrated cutting discs to shape parts placed in a fixed position on the machine. The discs rotate as they move over the workpiece surface.

Drilling

Secondly, drilling with drills and drill bits, which make circular holes. In the case of large holes, hole saws are used. In addition, this technique can be used on concrete, called diamond drilling, using crowns with industrial diamond edges.

Polishing

Finally, polishing, which consists of removing material from a surface using grinding wheels. This requires machines called grinders.