What is the Difference between a Shell Mill and a Face Mill They can do the

What is the difference between a shell mill and a

This preview shows page 83 - 105 out of 137 pages.

What is the Difference between a Shell Mill and a Face Mill They can do the same thing they machine on the faces ONLY in a wide area ! 83
Image of page 83
However a Shell Mill can machine on the Face and Sides 84 It is the shape of the carbide insert!
Image of page 84
Also - a Shell Mill? 85 A shell mill is any of various milling cutters (typically a face mill or endmill) whose construction takes a modular form, with the shank (arbor) made separately from the body of the cutter, which is called a "shell" and attaches to the shank/arbor via any of several standardized joining methods.
Image of page 85
Styles of Cutters High Speed End Milling 86 VIDEO Tungsten Carbide TiN Coated HSS
Image of page 86
4 Fluted End Mill 87 This End Mill can NOT plunge cut!
Image of page 87
3 Fluted End Mill 88 This End Mill CAN plunge cut Notice the difference in length of one cutting edge!
Image of page 88
2 Fluted End Mill 89 This End Mill CAN plunge cut Notice the difference in lengths of cutting edges!
Image of page 89
Styles of Cutters End Mills Glacern - VIDEO VIDEO 90
Image of page 90
Styles of Cutters Slotting End Mills 2 Flute only VIDEO RE-SHARPENING END MILLS Choosing the RIGHT End Mill - VIDEO 91
Image of page 91
Styles of Cutters Slotting & Side Mills usually 3/16 in. in thickness and above 92
Image of page 92
Slotting & Side Mills Carbide also! 93
Image of page 93
Styles of Cutters Circular Saws 94 Thickness - 1/8 in. - .006 in.
Image of page 94
2 Flute End Mill Can cut a blind hole! 95
Image of page 95
Styles of Cutters Form Cutters 96
Image of page 96
Form - Gear Hobbing CLICK 97
Image of page 97
Examples - Form Cutters 98
Image of page 98
Ideal Rate of Feed Work advances into cutter, each successive tooth advances into work equal amount Produces chips of equal thickness Feed per tooth Feed = no. of cutter teeth x feed/tooth x cutter r/min Feed (in./min) = N x CPT x r/min 99
Image of page 99
Examples: Feed Calculations Inch Calculations - HSS Find the feed in inches per minute using a 3.5 in. diameter, 12 tooth helical cutter to cut machine steel (CS70) *Low End First, calculate proper r/min for cutter: rpm x D xCS r 80 5 . 3 70 4 4 min / Feed(in/min) = N x CPT x r/min =12 x .010 x 80 = 9.6 in/min 100
Image of page 100
Examples: Feed Calculations Finish Cut Find the feed in inches per minute using a 3.5 in. diameter, 12 tooth helical cutter to cut machine steel (CS70) 9.6 in/min 9.6 in/min ÷ 2 = 4.8 in/min 101 Rough Cut Finish Cut ***** If anything slow down on the feed*****
Image of page 101
Examples: Feed Calculations Metric Calculations Carbide Tipped Calculate the feed in millimeters per minute for a 75-mm diameter, six-tooth helical carbide milling cutter when machining cast-iron (CS 60) *High End First, calculate proper r/min for cutter: rpm x D CSx r 256 75 200 , 19 75 320 60 320 min / Feed (mm/min) = N x CPT x r/min = 6 x 0.33 x 256 = 506.8 mm/min 102
Image of page 102
Image of page 105

You've reached the end of your free preview.

Want to read all 137 pages?

  • Fall '16
  • James Standing

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes