AE によ る切削工具主貴陽監視制御システム
Contents
1. 1 2 1 1 46 No 7 12. 6 2 AE AE 2 6 3
3. Acoustic Emission AE AE 2 2 1 AE AE AE AE
4. 6 0 AE AE NE TO EE NE RL 00 WI 0 UM 1 UN RS 232C Fig 1 81 AE Fig tib OM 1 Low 0 WC Fig 1e TTL 3 Fig 1 b Fig 2 Fig 3 Fig 2 AE AE
5. 1 7 V 1 8 V AE 1 8V AE 1 7V COUNTED NUMBER 200 0 0Q 0_ 200 200 0 _200 86 200 3 c mmTITT TFTT WT TFTT TfIH T rt ri 10 11 12 3 14 15 w NN CI2 6 TE I lt AE
6. AE P25 Fig 10 Fig 8 AE Fig 10 State of damage of the tool P25 6 IE AE 6 1 AE AE AE
7. IE Fig 2 8 Fig 2 b TIME TR AE 10 kHz 1 MHz 1 MHz i ig DISCRI LEVEL eR i b Output signal by 300 kHz 1 MHz mean Value detection RE HI LL W NM Fig 3 C Output of disocriminator Fig 3 a Fig 1 Counting method for AE signal ourmur AE SENSOR PREAMP a AE sensor section RF DISCRIMINATOF OUTPUT i SECTION MATNAMP SECTION Including HPF and LPF 0 DATA 1 VALUE RECORDER DETEC TTNG _ _ _ SECTTON oOTpon b The section of detective AE signal Fig 2 A unit of detecting AE Signal Vol 36 No 1 1985 Fig 3 b AE 119 119 DATA DISCRTMI OUTPUT RECORDER iATC O 3 Tnput Section for AE signal ND 802 MTCRO COMPUTER ONE BOARD TYPE 8255 LST for INPUT OUTPUT OR 8251 LST for COMMUNICATTON 241 3 S
8. 1 8V AE I 6VeeL7V 235 237 2 Fig 6 235 Fig 6 1 7V AE COUNTED NUMBER 0 2 2 319 2Z000 200 200 00 0 200 a b c d e f a DISCRI LEVEL 1 8V b DISCRI LEVEL 1 7V c DISCRI LEVEL 1 6V d DISCRI LEVEL 1 5V e DISCRI PEVEL 1 4V E DISCRI LEVEL 1 3V Fig 6 Counted number averaged by every 15 data of AE signal on the tool P20 AE
9. 1 6V 1 AE AE Fig 6 AE P20 Fig 7 Fig 7 State of damage of the tool P20 AE AE 5 2 P25 P25 50 m min 2 mm 0 3 mm rev 200 rpm S45C 1 3 V 1 8 V AE Fig 8 15
10. GR A TO Fig 2 AE a eR 5 60 dB S45C AE 5 1 P20 Fig 4 20 50 m min 2 mm NR 189 rpm S45C 1 3V 1 8V WI AE Fig 5 15 Tig 6 Fig 4 Shaved material PR OT P20 AE P25 1 6V 1 7V 1 8V 120 120 1 8V
11. 1 6 V AE Fig 5 AE 234 T 235 E 236 E 237 Wi 238 ed 3 239 0 ge ES 2 40 1 241 EE hE EE 243 244 s 245 EE EE 246 EE 247 4 1 E a b tG a DISCRI LEVEL 1 b DISCRI LEVEL 1 c DISCRT LEVEL 1 d DISCRI LEVEL 1 e DISCRI LEVEL 1 f DISCRT LEVEL 1 3V Fig 5 Counted number of AE signal on the tool P 20 Vol 36 No 1 1985 AE 121 121 2 Fig 6 1 3V 1 6V
12. Fig 9 1 Fig 8 Fig 8 AE AE 123 5 AE 123 5 124 124 125 123 5 124 AE 255 122 122 123 5 124 125
13. AE 1 AE AE AE AE AE AE 6 2 2 123 123 2
14. AE AE AE Fig 8 AE AE 2 AE AE AE AE
15. AE gt COUNTED NUMBER COUNTED NUMBER NY SS MIL J Cn 10 11 12 13 14 15 123 120 121 EE 122 TT OO LL I a b a DTISCRT LEVEL 1 8V a b DISCRI LEVEL 1 7V b c DISCRI LEVEL 1 6V c Fig 8 Counted number EE I SS WIL lt 14 15 li a Fig 9 of AE signal on the tool Vol 36 No 1 1985 P 25 b DTSCRT LEVEL 1 8V DTISCRT LEVEL 1 7V DISCRI LEVEL 1 6V Couted number averaged by every 15 data of AE signal on the tool P25 Fig 9 Fig 9 123 124 Fig 8 15
16. AE AE AE AE AE AE AE AE TH 118 118 High 2 2 AE 0 AE AE 1 0 00
17. 117 117 AE 1 A Monitoring and Control System for Cutting Tools Damage by Acoustic Emission Part 1 Itsuo TAKANAMI Masuo YOSHIOKA Yoshiro SAKAI and Kazumi KOBAYASHI Abstract Some researches on detecting cutting tool s damage have been done by using acoustic emission AE occurring on plastic deformation or destruction of tools However as long as we know no good method has been developed The paper shows experimental results as foundation to construct a system which in real time detects damage of cutting tools and controls stopping of cutting machines The system consists of an AE sensor unit and microcomputers for data processing and control Thus it is expected that the system may be constructed in relatively low cost 1 FA
18. 980 2 1976 3 Model S 6100 60 4 15
19. TATE BUFFER IC O RS INPUT OUTPUT i 8251 42320 DITISR DPIVE Blneh RENTER b AE sighnal proerssing section PERSONAL COMPUTER RECT ON Fig 3 AE signal processing unit 0 0 50 m min 2 mm 0 3 mm rev 1 RNN AE 200 rpm AE PMP 6 2 AE 4 2 Fig 3 AE 4 CR NR 33 sec 4 1 256
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