Term
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Definition
| How a tool is positioned in a machine |
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Term
| What is the side cutting edge angle? |
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Definition
| angle between insert cutting edge and the axis of the tool holder. Generally between 10-30 degrees. |
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Term
| At 90 Degree side cutting edge angle what is the chip thickness equal to? |
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Definition
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Term
| What would decrease chip thickness? |
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Definition
| Negative side cutting edge angles. |
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Term
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Definition
| End cutting edge angle. provides clearance between CT and workpiece. Should not be less than 5 degrees |
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Term
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Definition
| Side relief angle. Generally between 6-10 degrees. allows tool advancement w/o rubbing |
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Term
| What should be side relief angle for hard materials? What about soft materials? |
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Definition
Hard= 5-7 Degrees
Soft= 8-14 Degrees |
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Term
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Definition
| End relief angle. Clearance between end of tool and periphery of WP (8-12 degrees). Allows tool to advance into WP (Facing) |
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Term
| Characteristics of a positive rake angle? |
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Definition
Keener knife like Cutting edge.
high CS
For Cont. chips on ductile metal
less feed power needed |
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Term
| What angle has the greatest affect on chip formation? |
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Definition
| Side and back rake angles |
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Term
| Where is angle of keenness? What angle is needed for soft material? What about hard materials? |
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Definition
| Between the side rake and side relief. Sharp angle for soft materials. Up to 90 degrees or more for harder materials. |
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Term
| What type of nose radius causes a better surface finish? |
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Definition
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Term
| What size chamfer is ground onto cutting edges of inserts? |
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Definition
| between 20-45 degree and .005 to .02 wide. |
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Term
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Definition
Negative (Hard material on top on insert)
Positive (Groove) |
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Term
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Definition
| It either refers to the size of its inscribed circle or the length and width(Rectangular and parallelogram insert only) |
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Term
| When size of a part is very important and workpiece is springy. What type of insert should you use? |
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Definition
| Insert with a small nose radius. |
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Term
| What do most insert manufacturers base their grading on? |
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Definition
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Term
| ISO classifies their grades of inserts how? |
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Definition
| P(Blue), M(Yellow), or K(Red) |
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Term
| C1, C2, C3, C4 catagories are for what type of metal and which system is it derived from? |
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Definition
| For Cast iron, Non-Ferrous, and Non-Metallics. Part of the ANSI system. |
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Term
| Do ANSI and ISO identification systems deal with milling cutters only? |
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Definition
| They do not deal with milling cutters at all. Only Turning tool holders. |
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Term
| What is a qualified tool holder? |
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Definition
| (ANSI System) Manufactured to a tolerance of + or - .003 when measured from tip of insert to on or more qualified surfaces. |
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Term
| What does the first two letters represent in a qualified toolholder callout stand for? |
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Definition
| Clamping method and insert style |
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Term
| What does the last number in a insert callout stand for? |
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Definition
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