COMPUTER NUMERICAL CONTROL PROGRAMMING BASICS phần 2 docx

... Point Systems Incremental Absolute 7 The term numerical control is a widely accepted and commonly used term in the machine tool industry. Numerical control (NC) enables an operator to communicate ... , point A would be 2 units to the right of the Y axis and 2 units above the X axis. Assume that each unit equals 1.000. The location of point A would be X + 2. 000 and Y + 2. 000. F...

Ngày tải lên: 08/08/2014, 12:22

... Cataloging-in-Publication Data Krar, Steve F. COMPUTER Numerical Control Programming Basics / Steve Krar, Arthur Gill. p. cm. ISBN 0-07- 023 333-0 1. Machine Tools - Numerical Control. I. Gill, Arthur, date. II ... guidelines: John Carleo Editor Industrial Press, Inc. 20 0 Madison Avenue New York, NY 10016-4078 Toll Free: 888- 528 -78 52 ext. 18 Tel: 21 2-889-6330 ext.18 Fax:...

Ngày tải lên: 08/08/2014, 12:22

... interpolation 01 G 02 Circular interpolation clockwise (CW) 01 G03 Circular interpolation counterclockwise (CCW) 06 G20* Inch input (in.) 06 G21* Metric input (mm) G24 Radius programming (**) 00 G28 Return ... spindle off 25 4. Dimension the part clearly so that its shape can be understood without making mathematical calculations or guesses. 5. Define the part so that a computer numer...

Ngày tải lên: 08/08/2014, 12:22

... part. N10 G20 G90 G20 inch data input. G90 absolute programming mode. N15 M06 T01 M06 tool change command. T01 tool no. 1 ( .25 0 diameter, 2- flute end mill). N20 S2000 M03 S2000 spindle speed set at 20 00 ... is a .25 0 in. diameter high speed steel 2- flute end mill. • Mill the 1 in. square slot. • Drill the two .25 0 in. diameter holes, .25 0 in. deep. • Mill the .25 0 in. wide angul...

Ngày tải lên: 08/08/2014, 12:22

... cut. N80 X. 925 X. 925 tool feeds out (faces) to . 925 diameter. 40 Turning Programming Programming Sequence % (rewind stop code/parity check) 20 01 (program number) N05 G20 G90 G40 G20 inch data ... G95 G96 S2000 M03 G95 feed rate per revolution. G96 constant feed rate. S2000 spindle speed set at 20 00 r/min. M03 spindle ON clockwise. N15 T 020 2 tool number and offsets. N20 G00 X1 .20...

Ngày tải lên: 08/08/2014, 12:22

... part. N10 G20 G90 G20 inch data input. G90 absolute programming mode. N15 M06 T01 M06 tool change command. T01 tool no. 1 ( .25 0 diameter, 2- flute end mill). N20 S2000 M03 S2000 spindle speed set at 20 00 ... person BY MAIL Industrial Press, Inc. 20 0 Madison Avenue New York, NY 10016-4078 BY PHONE Toll-Free in U.S.: 888- 528 -78 52 Worldwide: 21 2-889-6330 BY FAX 21 2-545-8 327 BY...

Ngày tải lên: 25/12/2013, 05:16

... Cataloging-in-Publication Data Krar, Steve F. COMPUTER Numerical Control Programming Basics / Steve Krar, Arthur Gill. p. cm. ISBN 0-07- 023 333-0 1. Machine Tools - Numerical Control. I. Gill, Arthur, date. II ... guidelines: John Carleo Editor Industrial Press, Inc. 20 0 Madison Avenue New York, NY 10016-4078 Toll Free: 888- 528 -78 52 ext. 18 Tel: 21 2-889-6330 ext.18 Fax:...

Ngày tải lên: 27/06/2014, 14:20

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Ngày tải lên: 12/03/2014, 02:20

... tính ( ) ( ) ( ) ( ) 11 0 12 DD zz zz K zzzz −− −− ( ) ( ) 2 0 120 12 12 0 1 2 1 0 DD DD zKzzzKzz zz K z z ⎡ ⎤ +−++ + ⎢ ⎥ ⎣ ⎦ ++ = () 2 22 rj zc z r−+= ()( ) () ( ) ()( ) 12 1 2 12 1 2 121 2 1 21 2 2 12 1 2 rj DD DD DD ... thứcquenbiếtsau: Ví dụ: chọn n = 2 (xấpxỉ bậc2) 0 12 12 2 2 12 0 21 20 2 ccc Tc Tc T cTc ++ = −− = += 01 2 321 ;; 22 ccc TT T − == =...

Ngày tải lên: 22/07/2014, 09:20

... errors left in the program. If 100 bugs are inserted into the program, and testers find 20 of these, along with 20 0 others, the odds are that another 880 bugs (counting the 80 inserts) exist in the ... REASON FOR THIS CHAPTER a project Chapter 13 assumes that you have learned the basics. Along with Chapter 12, its focus Is on strategy: with a limited budget, how can testing and test...

Ngày tải lên: 06/08/2014, 09:20