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manuf part 2
cutting fluids
| Term | Definition |
|---|---|
| cutting fluids | fluid applied directly to operation to improve cutting performance |
| reasons to use cutting fluid | reduce friction and wear, cool the cutting zone, wash away chips |
| cutting speed | primary/speed motion |
| feed | secondary/feed motion |
| depth of cut | penetration of the tool below original work surface |
| roughing cut | remove large amount of material high feed and depth low speeds |
| finnishing cut | complete part and achieve final specs low feeds and depth high cutting speed |
| Turning | single point cutting tool removes material from rotating work piece to generate a cylindrical shape on lathe primary motion is rotating work piece secondary is cutting tool |
| types of turning | straight turning tapering facing cutoff contour turning form turning boring knurling |
| straight turning | reduces diameter tool is fed parallel to the axis of rotation |
| taper turning | produce tapered cylinder tool is fed at an angle |
| Facing | to produce flat surface tool is fed radially (perpendicular) into the rotating workpiece on one end |
| cutoff/parting | to cut off the end of the part, tool is fed radially into the part at some location |
| contour turning | tool follows a contour to create a contoured form in the part |
| form turning | tool has a shape that is imparted to the part |
| boring | like straight turning but is performed on the inside of an existing hole in the part to enlarge a hole |
| knurling | to produce a regular cross-hatched pattern in the part surface |
| cutting speed | tangential speed of the workpiece |
| feed | distance the tool travels during one revolution of the workpiece |
| depth of cut | difference between the original and machined surface |
| Drilling | creates round hole workpiece is fized the cutting tool rotates as well as moves in a direction parallel to its axis of rotation into the workpiece, the rotation motion is the primary motion the penetration is the secondary, uses a multiple cuttingedgetool |
| types of drilling | reaming tapping counterboring |
| reaming | to slightly enlarge a hole, provide better tolerance on diameter, and improve surface finish. |
| tapping | to provide internal threads on an existing hole. Tool called a tap. |
| counterboring | provides a stepped hole, in which a larger diameter follows a smaller diameter partially into the hole |
| milling | creates multiple shapes primary motion is rotating tool secondary motion the workpiece uses milling cutter and milling machine |
| types of milling | peripheral and face |
| peripheral milling | axis of tool parallel to surface machined. |
| face milling | The axis of tool is perpendicular to the surface being machined. |
| slab milling | the basic form of peripheral milling in which the cutter width extends beyond the workpiece on both sides |
| slotting milling | width of cutter is less than workpiece width, creating a slot in the work |
| conventional face milling | Cutter overhangs work on both sides |
| end milling | Cutter diameter is less than work width, so a slot is cut into part |
| pocket milling | Another form of end milling used to mill shallow pockets into flat parts |
| shaping and planing | Create a straight and flat surface Use a single point cutting tool moved linearly relative to the workpart Interrupted cutting (start-and-stop motion) |
| broaching | Moves a multiple tooth cutting tool linearly relative to work in direction of tool axis Cutting tool called a broach |
| sawing | Cuts narrow slit in work by a tool consisting of a series of narrowly spaced teeth Tool called a saw blade Separate a workpart into two pieces or cut off unwanted portions of part |
Created by:
bonvicc1
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