IC698CPE020
IC698CPE020
【廈門莫格電氣自動化有限公司】
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數(shù)控滑臺的控制因素主要有三個:
3.1 行程控制
一般液壓滑臺和機(jī)械滑臺的行程控制是利用位置或壓力傳感器(行程開關(guān)/死擋鐵)來實(shí)現(xiàn);而數(shù)控滑臺的行程則采用數(shù)字控制來實(shí)現(xiàn)。由數(shù)控滑臺的結(jié)構(gòu)可知,滑臺的行程正比于步進(jìn)電機(jī)的總轉(zhuǎn)角,因此只要控制步進(jìn)電機(jī)的總轉(zhuǎn)角即可。由步進(jìn)電機(jī)的工作原理和特性可知步進(jìn)電機(jī)的總轉(zhuǎn)角正比于所輸入的控制脈沖個數(shù);因此可以根據(jù)伺服機(jī)構(gòu)的位移量確定PLC輸出的脈沖個數(shù):
n= DL/d (1)
式中 DL——伺服機(jī)構(gòu)的位移量(mm),d ——伺服機(jī)構(gòu)的脈沖當(dāng)量(mm/脈沖)
3.2 進(jìn)給速度控制
伺服機(jī)構(gòu)的進(jìn)給速度取決于步進(jìn)電機(jī)的轉(zhuǎn)速,而步進(jìn)電機(jī)的轉(zhuǎn)速取決于輸入的脈沖頻率;因此可以根據(jù)該工序要求的進(jìn)給速度,確定其PLC輸出的脈沖頻率:
f=Vf/60d (Hz) (2)
式中 Vf——伺服機(jī)構(gòu)的進(jìn)給速度(mm/min)
3.3 進(jìn)給方向控制
進(jìn)給方向控制即步進(jìn)電機(jī)的轉(zhuǎn)向控制。步進(jìn)電機(jī)的轉(zhuǎn)向可以通過改變步進(jìn)電機(jī)各繞組的通電順序來改變其轉(zhuǎn)向;如三相步進(jìn)電機(jī)通電順序?yàn)?/span>A-AB-B-BC-C-CA-A…時步進(jìn)電機(jī)正轉(zhuǎn);當(dāng)繞組按A-AC-C-CB-B-BA-A…順序通電時步進(jìn)電機(jī)反轉(zhuǎn)。因此可以通過PLC輸出的方向控制信號改變硬件環(huán)行分配器的輸出順序來實(shí)現(xiàn),或經(jīng)編程改變輸出脈沖的順序來改變步進(jìn)電機(jī)繞組的通電順序?qū)崿F(xiàn)。
STANLEY VIDMAR 9-DRAWER STORAGE CABINET, 28" X 30" X 59", HANDLES, 5/7-C
UNION WIRE ROPE 460 Ft 7/16 INCH DIA 6X36 LAY R/L CORE/FINISH IWRC W/ PLUG ENDS
STANLEY VIDMAR 7-DRAWER STORAGE CABINET, 30" X 28" X 59", 3/30-B
YALE * 3-TON 10FT CHAIN HOIST * NO LABEL
CM COLUMBUS MCKINNON CYCLONE 8-TON HAND HOIST MODEL S
BREWER-TITCHENE?R SIZE 8IN PULLEY FIG. NO. 4083V 105167
KROMERS, 90.0-100.0 KG, SPRING FOR SPRING BALANCER 7251
ADB 30,000lb NICKEL PLATED HOIST RING X83200-C-3.8-NI?CKEL *NEW*
CLIPPER 6 BELT FASTENERS GALVANIZED NYLOSTEEL PINS 12" NIB
DENGENSHA 12" VIBRATORY PARTS FEEDER AF.V-N-S-S10-DL?H
COMMERCIAL GROUP PRODUCT 150' OAL, 5/16" DIA WIRE ROPE SW-710 *NEW*
CENTRAL MACHINERY 1HP 16-SPEED HEAVY DUTY DRILL PRESS MODEL NO. 583
ANAMET ELECTRICAL 100', 1" CNP ANACONDA SEALTITE LFNC HOSE 38631 *NEW*
CM COLUMBUS MCKINNON CYCLONE 1-TON HAND HOIST MODEL S
PPI PRECISION PULLEY & IDLER CONVEYOR TROUGHING IDLER C5-20TESA-36GR
ELCO ENTERPISES WIRE WIZARD WIRE GUIDE ARMS FOR WOOD REELS RW1024-C17U, NEW
5' ROLLER LENGTH 6" WIDTH CONVEYOR ROLLER
PARKER 50' STINGER II HIGH PRESSURE MINE & MULTIPURPOSE HOSE 7268E-2001 *NEW*
MANNESMANN DEMAG EKDH WIRE ROPE HOIST TROLLEY W/ 3PH 1630RPM 0.29HP MOTOR KDF63
P&H HARNISCHFEGER 16FT LIFT, 5-TON HOIST RL9C-V4 W/ MOTORIZED TROLLEY
FLEXON 40' LENGTH, 12.7MM PITCH, 1250N LOAD, ROLLER CHAIN ES1-1-27-K16 *NEW*
CASCADE 50D 5,000lbs. CAPACITY PULP BALE CLAMP BCS 111
DUFF NORTON 5-TON RATCHET JACK NO.52
PARKER 61' HIGH PRESSURE HYDRAULIC HOSE 78C-16 *NEW*
UNIFIED INDUSTRIES, 1000LB CAPACITY, ANTI-KICK UP, CARRIER TROLLEY MBC 1000-3
5X62.62 CONVEYOR RETURN TRAINING IDLER 1730-341-U
INGERSOLL-RAND 1600MM STROKE 2.2-4.4LBS CAPACITY BALANCER BLD2
SMC MOUNTING BRACKET BA-01, A05-F26 *NEW* SEALED