CN101524717B - Large-scale ring rolling machine proportion servo-control system - Google Patents
Large-scale ring rolling machine proportion servo-control system Download PDFInfo
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- CN101524717B CN101524717B CN2009100205265A CN200910020526A CN101524717B CN 101524717 B CN101524717 B CN 101524717B CN 2009100205265 A CN2009100205265 A CN 2009100205265A CN 200910020526 A CN200910020526 A CN 200910020526A CN 101524717 B CN101524717 B CN 101524717B
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Abstract
The invention discloses a large-scale ring rolling machine proportion servo-control system which belongs to the technical field of high-precision electrohydraulic servo control. The large-scale ring rolling machine proportion servo-control system comprises a five-axle control system which is formed by a radial rolling control system, an axial rolling control system, a follow-up stand control system, a centering roller rolling control system and a conical roller rotate speed control system; through the theoretical position setting and the actual position detection of radial rolling, axial rolling, a follow-up stand, a centering roller, and the like, a five-axle closed-loop position control system is formed by taking the theoretical sizes of an outer circle, an inner circle and the height of a ring member and the linear velocity of the outer circle of the loop member as target values and the detection values of the core roller position, the conical roller position, the follow-up stand position, the centering roller position and the conical roller rotate speed as feedback, therefore, five axles after being controlled can be debugged in a relatively independent way, thereby the safety and reliability of the system is increased, the rolling working of the control systems is stable, and the control precision is high.
Description
(1) technical field
The present invention relates to a kind of large-scale ring rolling machine proportion servo-control system, belong to high accuracy electro-hydraulic servo control technical field.
(2) background technology
Ring Rolling Machine is the main flow blank process equipment of large ring, is mainly used in forging such as rolling bearer ring, gear ring, flange, wheel hub, thin-walled be barrel-shaped, can rolling carbon steel, material annular element such as stainless steel, titanium alloy, aluminium alloy and high temperature alloy; In fields such as mechanical industry, petrochemical industry, textile industry, engineering machinery and aerospace, be applied at present.
The control system that generally adopts in the electrohydraulic control system that domestic now Ring Rolling Machine uses is the control mode of mill speed and draught pressure, be controlled to be the master with open loop, milling method, rolling stability and rolling accuracy mainly depend on operator's experience, especially system debug can't realize unloaded simulation test run, and trial production process very easily causes waste product; In the ring rolling process, pressure-speed is regulated has adjusting not in place slightly, directly causes ring oval and special-shaped, causes and scraps; This control mode has caused operating experience dependence in the rolling ring process in a word, causes the controllability of system relatively poor, is difficult to realize numerically controlled automatic production.
(3) summary of the invention
The present invention is in order to remedy the deficiencies in the prior art, and a kind of security reliability that increases system, large-scale ring rolling machine proportion servo-control system that control accuracy is high are provided.
The present invention is achieved through the following technical solutions:
A kind of large-scale ring rolling machine proportion servo-control system, comprise five control systems that formed by radial rolling control system, axially rolled control system, follower frame control system, centering rolling system control system, awl roller revolution speed control system, its special character is:
Described radial rolling control system: be included in the radial rolling slide block of making horizontal reciprocating movement in the bed ways, one end of radial rolling slide block is connected with the radial rolling cylinder of its motion of control, and the other end of radial rolling slide block is connected with and is positioned at the core roller that is rolled the ring inboard;
Described follower frame control system: the moving frame cylinder that comprises moving frame and control its motion, the measurement cylinder control survey roller on the moving frame is adjacent to the outer rim of being rolled ring;
Described axially rolled control system: be fixed with axially rolled cylinder and the axially rolled slide block that is connected with axially rolled cylinder on the moving frame, be fixed with on the axially rolled slide block and be positioned at the epicone roller that is rolled ring top, be fixed with on the moving frame and be positioned at the following awl roller that is rolled the ring bottom;
Described centering rolling system control system: home roll and centering roller mechanism are installed on the lathe bed, and the centering roller mechanism is made up of preceding centering cylinder, preceding centering roller, preceding arm, back centering cylinder, back arm and back centering roller, preceding centering roller, the back roller home roll both sides that are placed in of feeling relieved;
Described awl roller revolution speed control system: the epicone roller, bore roller down and drive by direct current generator respectively, the epicone roller, bore the awl roller rotating speed coder that roller is connected with detection cone roller rotating speed respectively down.
It is poor to the invention solves the system controllability that the control of Ring Rolling Machine draught pressure, mill speed brings, milling method, rolling stability, rolling accuracy mainly rely on experience, and ring rolling pressure-speed open loop control causes easily owing to problems such as operational issue cause that ring is scrapped.
The Ring Rolling Machine frame fuses by bolt and pin, is installed on the basis.Radial rolling slide block and axial frame are made horizontal reciprocating movement in bed ways, home roll mechanism and centering roller mechanism are installed on the lathe bed.The radial rolling slide block is made horizontal reciprocating movement in bed ways under the promotion of master cylinder, realize radial rolling; Axially rack unit is made up of axial frame, axially rolled cylinder, servo cylinder and upper and lower awl roller, the awl roller is implemented the axially rolled of ring, servo cylinder drives axial frame and then moves along with the diameter increase of ring rolling, to satisfy the relative position requirement of axially rolled awl roller and ring; The effect of centering roller is to make the whole operation of rolling stable, improves the circularity of ring.It is made up of preceding centering cylinder, preceding centering roller, preceding arm, back centering roller, back arm and back centering cylinder.Embrace a pair of armful of roller of roller oil cylinder control and remain on ring cylindrical theoretical position, when the ring diameter increases, reach the purpose of full circle.Measuring the cylinder function is to measure the external diameter of ring part, and the rotating speed of control direct current generator and Control Shaft are to the follow-up motion of frame.Measure roller is adjacent to workpiece under the effect of oil cylinder power outer rim, when the diameter of ring increases, will move after its promotion, the position of ring this moment on awl roller bus changes, and the rotating speed of axial direction electric machine is adjusted automatically.According to the principle of the action of above-mentioned Ring Rolling Machine, mainly be divided into five controls such as radial rolling, axially rolled, centering roller, servo-actuated frame, awl roller rotating speed in the core of control system.
The present invention adopts the core Hydraulic Elements of four-way proportioning valve as high accuracy control, detection by radial rolling, axially rolled, servo-actuated frame, centering roller scheduling theory set positions and physical location, theoretical size with the cylindrical of ring, interior circle, height and ring external circe speed is a desired value, core roller position, awl roller position, servo-actuated shelf position, centering roller position, awl roller rotating speed detected value are as feedback, formed five closed loop position control systems, can obtain after the control like this:
1) five can relatively independently debug, unloaded simulated test, load test be convenient and reliable.
2) manually, the automatic rolling conversion is flexible.
3) realize Position Control, pressure protect function preferably, increased the security reliability of system.
4) the rolling operating characteristic of control system is stable, the control accuracy height.
5) improve system's controllable characteristics, significantly simplified the operation easier of Ring Rolling Machine.
The present invention is that the high accuracy of core roller of ring rolling machine, awl roller, centering roller and servo-actuated frame detects and closed-loop control system, can be applied on D53K-3500,5000,7000 Ring Rolling Machines.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 looks schematic diagram for master of the present invention;
Fig. 2 is a schematic top plan view of the present invention;
Fig. 3 is a hydraulic principle sketch of the present invention.
Among the figure, 1 moving frame cylinder, 2 moving frames, 3 axially rolled slide blocks, 4 axially rolled cylinders, 5 epicone rollers, 6 are rolled ring, 7 core rollers, 8 home rolls, 10 radial rolling slide blocks, 11 radial rolling cylinders, 12 back centering rollers, 13 back arms, 14 back centering cylinders, centering roller before 15,16 preceding arms, 17 preceding centering cylinders, 18 measure cylinder, 19 frames, 20 times awl rollers.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises five control systems that formed by radial rolling control system, axially rolled control system, follower frame control system, centering rolling system control system, awl roller revolution speed control system, described radial rolling control system: be included in the radial rolling slide block 10 of making horizontal reciprocating movement in the bed ways, one end of radial rolling slide block 10 is connected with the radial rolling cylinder 11 of its motion of control, and the other end of radial rolling slide block 10 is connected with and is positioned at the core roller 7 that is rolled ring 6 inboards; Described follower frame control system: the moving frame cylinder 1 that comprises moving frame 2 and control its motion, moving frame cylinder 1 are fixed on the frame 19, and the measurement cylinder 18 control survey rollers on the moving frame 2 are adjacent to the outer rim of being rolled ring 6; Described axially rolled control system: be fixed with axially rolled cylinder 4 and the axially rolled slide block 3 that is connected with axially rolled cylinder 4 on the moving frame 2, be fixed with on the axially rolled slide block 3 and be positioned at the epicone roller 5 that is rolled ring 6 tops, be fixed with on the moving frame 2 and be positioned at the following awl roller 20 that is rolled ring 6 bottoms; Described centering rolling system control system: home roll 8 and centering roller mechanism are installed on the lathe bed, the centering roller mechanism is made up of preceding centering cylinder 17, preceding centering roller 15, preceding arm 16, back centering cylinder 14, back arm 13 and back centering roller 12, preceding centering roller 15, back roller 12 home roll 8 both sides that are placed in of feeling relieved; Described awl roller revolution speed control system: epicone roller 5, bore roller 20 down and drive by direct current generator respectively, epicone roller 5, bore the awl roller rotating speed coder that roller 20 is connected with detection cone roller rotating speed respectively down.
Referring to the hydraulic principle sketch, according to five of Ring Rolling Machines control requirement, carry out radial rolling, axially rolled, servo-actuated frame, centering roller position and the control of awl roller rotating speed thereof respectively, the operation principle and the course of work at each position are as follows:
1) radial rolling control: core roller horizontal feed amount has determined the radial rolling process of ring, radial rolling cylinder (master cylinder) drives the core roller by the radial rolling slide block and does the rolling feed motion of horizontal radial, core roller position is detected by encoder, form closed-loop control system according to the radial rolling amount of feeding and core roller actual detected position, control core roller position is to realize the accurate control of radial rolling.
2) axially rolled control: the axially rolled cylinder amount of feeding has determined the axially rolled process of ring, axially rolled cylinder drives the epicone roller by axially rolled slide block and moves downward, epicone roller position is detected by axially rolled encoder, form closed-loop control system according to the axially rolled amount of feeding and epicone roller roller actual detected position, control epicone roller position is to realize axially rolled accurate control.
3) servo-actuated frame control: the moving frame cylinder is according to the position of the diameter decision moving frame of actual measurement ring, the moving frame cylinder drives the moving frame horizontal movement, the moving frame position is detected by the moving frame encoder, form closed-loop control system according to ring measured diameter and moving frame actual detected position, control moving frame position, to realize the Accurate Position Control of moving frame, for the control of awl roller rotating speed is laid a solid foundation.
4) the rolling system of feeling relieved is controlled: the roller composition was embraced in centering cylinder, front and back arm and front and back before and after the centering roller comprised, the position of the roller of feeling relieved directly influences the forming process of ring, and it has determined the circularity of ring.Front and back centering cylinder seesaws and drives armful roller by arm is center of circle horizontal hunting to embrace a roller bearing pin, embracing the roller position detects by embracing the roller position coder, determine to embrace the roller theoretical position according to the ring measured diameter, form closed-loop control system with armful roller actual detected position, the roller position is embraced in control, is rolled the circularity control of ring and guarantees that the center of circle of ring remains on the Ring Rolling Machine central axis with realization.
5) awl roller rotating speed control: awl roller rotating speed requires to guarantee that home roll bus characteristic point linear velocity equates with the linear velocity of ring rotation character pair point.According to this policy setting awl roller rotating speed theoretical value; bore roller up and down to rotate by the direct current generator drive with the rotating speed counter steer; awl roller rotating speed is detected by awl roller rotating speed coder; detect rotating speed according to the theory setting rotating speed with awl roller roller actual detected and form closed-loop control system; control awl roller characteristic point linear velocity changes according to the characteristic point change of line speed of being rolled ring, to realize guaranteeing that the rotating speed in the ring rolling process mates control.
Claims (2)
1. large-scale ring rolling machine proportion servo-control system, comprise five control systems that form by radial rolling control system, axially rolled control system, follower frame control system, centering rolling system control system, awl roller revolution speed control system, it is characterized in that:
Described radial rolling control system: be included in the radial rolling slide block (10) of making horizontal reciprocating movement in the bed ways, one end of radial rolling slide block (10) is connected with the radial rolling cylinder (11) of its motion of control, and the other end of radial rolling slide block (10) is connected with to be positioned at and is rolled the inboard core roller (7) of ring (6);
Described follower frame control system: the moving frame cylinder (1) that comprises moving frame (2) and control its motion, measurement cylinder (18) the control survey roller on the moving frame (2) is adjacent to the outer rim of being rolled ring (6);
Described axially rolled control system: be fixed with axially rolled cylinder (4) and the axially rolled slide block (3) that is connected with axially rolled cylinder (4) on the moving frame (2), be fixed with on the axially rolled slide block (3) and be positioned at the epicone roller (5) that is rolled ring (6) top, be fixed with on the moving frame (2) and be positioned at the following awl roller (20) that is rolled ring (6) bottom;
Described centering rolling system control system: home roll (8) and centering roller mechanism are installed on the lathe bed, the centering roller mechanism is made up of preceding centering cylinder (17), preceding centering roller (15), preceding arm (16), back centering cylinder (14), back arm (13) and back centering roller (12), preceding centering roller (15), back roller (12) home roll (8) both sides that are placed in of feeling relieved;
Described awl roller revolution speed control system: epicone roller (5), bore roller (20) down and drive by direct current generator respectively, epicone roller (5), bore the awl roller rotating speed coder that roller (20) is connected with detection cone roller rotating speed respectively down.
2. large-scale ring rolling machine proportion servo-control system according to claim 1 is characterized in that: each of above-mentioned five control systems adopted position closed loop control respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100205265A CN101524717B (en) | 2009-04-17 | 2009-04-17 | Large-scale ring rolling machine proportion servo-control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100205265A CN101524717B (en) | 2009-04-17 | 2009-04-17 | Large-scale ring rolling machine proportion servo-control system |
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| CN101524717A CN101524717A (en) | 2009-09-09 |
| CN101524717B true CN101524717B (en) | 2011-05-25 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861841B (en) * | 2012-09-21 | 2014-09-17 | 济南大学 | Experiment test device and experiment test method of radial-axial ring rolling |
| CN102862094B (en) * | 2012-10-19 | 2014-12-10 | 上海电力学院 | Hydraulic servo system controlled by numerical control system |
| CN104279944A (en) * | 2013-07-12 | 2015-01-14 | 北京精密机电控制设备研究所 | Split and multi-redundancy linear displacement sensor |
| CN104646561A (en) * | 2015-01-27 | 2015-05-27 | 安徽同盛环件股份有限公司 | Stainless steel ring part inner and outer circle molding device |
| CN108052071B (en) * | 2018-02-07 | 2024-03-26 | 山西金瑞高压环件有限公司 | Numerical control ring rolling machine arm-holding servo control system |
| CN110711834B (en) * | 2018-07-11 | 2021-10-01 | 上海电气上重铸锻有限公司 | Apparatus and method for forming semi-circular ring-shaped member |
| CN110773683A (en) * | 2019-11-06 | 2020-02-11 | 江阴市恒润重工股份有限公司 | Ring rolling device of special-shaped wind power flange |
| CN111026040A (en) * | 2019-12-29 | 2020-04-17 | 江苏金源高端装备股份有限公司 | Ring rolling intelligent forging control system |
| CN113084055B (en) * | 2021-03-25 | 2021-11-30 | 武汉理工大学 | Self-adaptive control method for eccentric state in radial-axial rolling process of large ring piece |
| CN114535473A (en) * | 2022-02-21 | 2022-05-27 | 中国重型机械研究院股份公司 | Position control system and method for radial centering roller of ring rolling machine |
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