CN1018340B - Micro-computer controlling system for cylinder-driven flying saw - Google Patents
Micro-computer controlling system for cylinder-driven flying sawInfo
- Publication number
- CN1018340B CN1018340B CN 90104334 CN90104334A CN1018340B CN 1018340 B CN1018340 B CN 1018340B CN 90104334 CN90104334 CN 90104334 CN 90104334 A CN90104334 A CN 90104334A CN 1018340 B CN1018340 B CN 1018340B
- Authority
- CN
- China
- Prior art keywords
- computer
- pulse generator
- steel pipe
- saw
- optical pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Sawing (AREA)
Abstract
The present invention relates to a microcomputer controlling system for a cylinder-driven flying saw, which belongs to the technical field of metal processing, in particular to the technical field of an automatic control technology for determining the length of pipes and cutting off the pipes in an on-line mode. The present invention is mainly characterized in that a direct current reversible speed regulating system is not used; a photoelectric pulse generator which is arranged on a saw carriage is used for measuring the relative displacement between a steel pipe and the saw carriage; an electromagnetic valve is directly controlled by a computer through an output driving circuit to accurately determine the length of the steel pipe and cut off the steel pipe. The present invention has the advantages of simple structure and low cost, is suitable for pneumatic flying saws which are used for enterprises for producing welding pipes, and is also suitable for determining the length of wires and section materials and cutting off the wires and the section materials in an on-line mode.
Description
Micro-computer controlling system for cylinder-driven flying saw of the present invention belongs to metal and processes the automatic control technology field that the online high accuracy scale of tubing and wire rod particularly cuts off.
Generally adopt the online high accuracy scale of Direct Digital system i.e. " DDS " system control tubing to cut off at present abroad.This system is grouped into by detection and computer control part, dc reversibling speed-regulating part, rack-and-pinion reductor part and saw car body portions, is characterized in: the sizing accuracy height, but system is huge, the price height.Domestic most Welded Pipe Plant adopts pneumatic Fixed Length Flying Saw to carry out the fixed ruler cutting of tubing; The scale error about ± more than the 40mm, but simple in structure, cheap.
The objective of the invention is to overcome the defective of the online fixed ruler cutting control system of the domestic and international tubing that adopts at present, design a kind of simple in structure, cheap, product reaches international advanced standard, be convenient to the micro-computer controlling system for cylinder-driven flying saw of technological transformation of the pneumatic Fixed Length Flying Saw of domestic employing.
Technical characterictic of the present invention is: abroad dc reversible speed control system in " DDS " system and gear, tooth bar reduction box remove, and directly control magnetic valve by computer by output driving circuit and realize the accurate fixed ruler cutting of steel pipe.Optical pulse generator (22) is installed in the base cover (8), and the base cover is floated on the saw car (9) by damping spring (21); Optical pulse generator passes through universal joint (24) again by jackshaft (23) and is connected on the roll shaft that tests the speed (25), and the roll shaft that tests the speed is loaded in the roller that tests the speed (7).Excess of stroke inductive switch (20), optical pulse generator (22), baroceptor (2) cause the input interface (17) of computer respectively with flexible circuit conductor.Boosting cylinder (11), clamping cylinder (5) and master cylinder (1) are connected on magnetic valve (10), (6), (19) with flexible rubber hose respectively.These three magnetic valves are connected to computer output driving circuit (14) with flexible circuit conductor, and are associated in together by the same computer of output interface circuit (15) (16).Printer (13), displaying alarm (12) are coupled to output driving circuit (14); Guidance panel (18) links with flexible circuit conductor and computer input interface (17).Saw blade (4) is installed on the main shaft that links to each other with the piston rod of master cylinder (1), and (3) are steel pipe.
Computer (16) adopts TP801B or MCS-51 series monolithic 8031.Input interface (15) adopts two 74LS04 and ten two road TP621 photoelectricity coupling elements and 200 Ω resistor chains to form.Drive circuit (14) is by solid-state relay SSR10, a slice 8279, and a slice 74LS125 and a slice 74LS123 chip are formed.Input interface circuit is by eight road TP621 photoelectricity couplings, a slice 74LS04, and four 74LS00, two 7454 integrated circuits and 4.7K resistor chain are formed.Magnetic valve (10), (6), (19) are common two-position five-way valve, and cylinder (11), (5), (1) diameter are 120mm.Optical pulse generator (22) model is MCJ-1, and the roller that tests the speed (7) quenches with bearing steel processing back, more than the hardness HRC58, or adopts Hardmetal materials.
Micro-computer controlling system for cylinder-driven flying saw of the present invention is simple in structure, easy operating and maintenance, cheap (be general DDS system 1/5), control accuracy≤± 5mm.
Description of drawings: Fig. 1 is the micro-computer controlling system for cylinder-driven flying saw structural representation, and Fig. 2 is an optical pulse generator, roller and connection schematic diagram thereof test the speed.
1,2 the micro-computer controlling system for cylinder-driven flying saw course of work of the present invention is described in conjunction with the accompanying drawings: the roller that tests the speed (7) is pressed on the steel pipe (3) by adjusting leading screw, this computer-chronograph (16) resets, shearing length that computer provides guidance panel (18) automatically setting value is read in the computer, and constantly samples, tests the speed and count length.Along with steel pipe (3) moves, drive roller (7) and optical pulse generator (22) rotation of testing the speed, it is that 90 ° square-wave pulse signal is sent into computer input interface (17) that optical pulse generator sends the two-way phase difference, through photoelectricity isolate, the quadruple phase discriminator delivers to computer (16).The computer timing sampling can obtain steel pipe movement velocity and length, and calculates the sawing lead by the boosting length that pre-deposits and the mathematical model of boosting time and the mathematical model of air pressure and clamping time.When the steel pipe movable length reached the difference of preseting length and lead, computer sent boosting, clamping, saws, lifts instructions such as saw, carriage return down, and first rear drive magnetic valve (10), (5), (1) make boosting cylinder (11) promote saw car (9) and advances; Clamp cylinder (5) subsequently by the steel pipe in the folder watt clamping motion, keep saw car and steel pipe synchronous operation; Through one section time-delay, master cylinder (1) promotes saw blade (4) and cuts off steel pipe (3).When system breaks down saw garage when going to excess of stroke inductive switch (20) position, whole system is out of service, realizes protection automatically.
Micro-computer controlling system for cylinder-driven flying saw of the present invention is applicable to the employed flying saw of welded tube manufacturing enterprise, also is applicable to the online fixed ruler cutting of wire rod, section bar simultaneously.
Claims (1)
1, the micro-computer controlling system for cylinder-driven flying saw of forming by Sensor section, computer control part, pneumatic apparatus and optical pulse generator, measure steel pipe (3) and the relative displacement of sawing car (9) with an optical pulse generator (22) that is loaded on the saw car, directly controlling magnetic valve by computer by output driving circuit realizes the accurate fixed ruler cutting of steel pipe, it is characterized in that: optical pulse generator (22) is loaded in the base cover (8), and is floated on the saw car (9) with damping spring (21); Optical pulse generator (22) is connected on the roll shaft that tests the speed (25) that is loaded in the roller that tests the speed (7) through universal joint (24) by jackshaft (23).Optical pulse generator (22) is connected to computer input interface (17) with flexible circuit conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104334 CN1018340B (en) | 1990-06-21 | 1990-06-21 | Micro-computer controlling system for cylinder-driven flying saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104334 CN1018340B (en) | 1990-06-21 | 1990-06-21 | Micro-computer controlling system for cylinder-driven flying saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057607A CN1057607A (en) | 1992-01-08 |
| CN1018340B true CN1018340B (en) | 1992-09-23 |
Family
ID=4878517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90104334 Expired CN1018340B (en) | 1990-06-21 | 1990-06-21 | Micro-computer controlling system for cylinder-driven flying saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018340B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1037418C (en) * | 1994-12-03 | 1998-02-18 | 李士华 | Program-controlled frequency-changing flying sawing machine |
| CN1086327C (en) * | 1999-05-14 | 2002-06-19 | 宋志新 | Control method and unit for sizing and shearing on flat flate machine |
| CN105171119A (en) * | 2015-08-10 | 2015-12-23 | 马鞍山市盈天钢业有限公司 | Computer flying saw machine |
| CN105643360A (en) * | 2015-12-31 | 2016-06-08 | 大连三高科技发展有限公司 | Control method of empty curving molding set for straight seam electric resistance welded pipe |
-
1990
- 1990-06-21 CN CN 90104334 patent/CN1018340B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057607A (en) | 1992-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |