CN104656559A - Double closed-loop servo control system of gang tool numerical control lathe - Google Patents

Double closed-loop servo control system of gang tool numerical control lathe Download PDF

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Publication number
CN104656559A
CN104656559A CN201310583626.5A CN201310583626A CN104656559A CN 104656559 A CN104656559 A CN 104656559A CN 201310583626 A CN201310583626 A CN 201310583626A CN 104656559 A CN104656559 A CN 104656559A
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CN
China
Prior art keywords
lathe
support
motor
control
positioner
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.)
Pending
Application number
CN201310583626.5A
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Chinese (zh)
Inventor
王社民
叶建锋
邵平列
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Northwest Machine Co Ltd
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Northwest Machine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Northwest Machine Co Ltd filed Critical Northwest Machine Co Ltd
Priority to CN201310583626.5A priority Critical patent/CN104656559A/en
Publication of CN104656559A publication Critical patent/CN104656559A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/18Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/404Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia

Abstract

The invention discloses a double closed-loop servo control system of a gang tool numerical control lathe. The double closed-loop servo control system comprises a latch numerical control system, a position controller, a speed controller and a motor driver, wherein a coder is mounted on the latch motor, the coder is connected with the position controller and the speed controller; a left support and a right support are mounted on a lathe movable part work bench, the left support and the right support are respectively equipped with a collision block support and a raster ruler which is used for measuring a displacement of the latch bang tool in real time, and the raster ruler is connected with the position controller; and the connection board is mounted on the latch cross sliding bench, a limiting switch support is mounted on the connection board, a limiting switch is mounted on the limiting switch support, and a left limiting block, a zero limiting block and a right limiting block which match with the limiting switch are mounted on the collision block from left to right in sequence, and the limiting switch is connected with the position controller. The double closed-loop servo control system is convenient to achieve, high in work reliability, and strong in practicality, with which production cost is reduced, production period is shortened, and processing precision is improved.

Description

Row's blade type numerically controlled lathe two close cycles servo-control system
Technical field
The present invention relates to machine tool technology field, especially relate to a kind of row's blade type numerically controlled lathe two close cycles servo-control system.
Background technology
Along with improving constantly of modern manufacturing industry level of processing, numerically-controlled machine is widely used in manufacturing industry.In prior art, numerically controlled lathe mainly adopts open loop or half-closed loop control.So-called half-closed loop control adopts servomotor as driver part exactly, the pulse encoder in motor is loaded in can adopting, brushless resovler or tech-generator form semiclosed loop position control system as location/velocity detection means, the feedback signal of its system is taken from motor shaft or screw mandrel, and the mechanical driving device in feed system is in outside backfeed loop.This control mode can not overcome or compensate for the gap on driving-chain and error (backlass of leading screw and pitch error etc.).And it is very high to the accuracy requirement of the driving member such as machine tool lead screw and feed screw nut, but China's manufacturing industry development level is lower, equipment is outmoded, low precision, be difficult to the high-precision transmission parts processed needed for lathe, mainly lean on import for some high-precision parts in China's Machine Manufacture, not only cost is very high, and substantially prolongs the manufacturing cycle of lathe, seriously hinder the development of China's machine tool industry.
Develop rapidly along with manufacturing, to some shaft sleeves, particularly the accuracy requirement of rotary type dish type component is more and more higher, adopts row's blade type numerically controlled lathe of open loop or half-closed loop control can not meet the needs of development of manufacturing.Mechanical driving device in half-closed loop control feed system is in outside backfeed loop.This control mode can not overcome or compensate for the gap on driving-chain and error (backlass of leading screw and pitch error), so adopt half-closed loop control can not meet the needs of high precision row blade type numerically controlled lathe, hinder the development of high-precision solid matter blade type numerically controlled lathe.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of row's blade type numerically controlled lathe two close cycles servo-control system is provided, its structure is simple, and it is convenient to realize, and reduces and realizes cost, shorten the manufacturing cycle, improve machining precision, rapidity and followability good, functional reliability is high, failure rate is low, practical.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of row's blade type numerically controlled lathe two close cycles servo-control system, comprise computer numerical control (CNC) system for lathe, it is characterized in that: also comprise the positioner connected with described computer numerical control (CNC) system for lathe, the speed control connected with described positioner and connecting with described speed control and motor driver for driving lathe motor, described lathe motor is provided with the scrambler for carrying out detecting in real time to the rotating speed of lathe motor and turned position, the rotational position signal output terminal of described scrambler connects with the first signal input part of described positioner, the tach signal output terminal of described scrambler connects with the signal input part of described speed control, left end and the right-hand member of lathe moving-member worktable are separately installed with left socle and right support, described left socle and right support are provided with collision block support and the grating scale for carrying out detecting in real time to the displacement of lathe row cutter, and the displacement signal output part of described grating scale connects with the secondary signal input end of described positioner, lathe cross slid platform is provided with web joint, described web joint is provided with limit switch bracket, described limit switch bracket is provided with limit switch, described collision block support is from left to right provided with successively all with described limit switch with the use of left limit block, zero-bit block and right limit block, described limit switch connects with the 3rd signal input part of described positioner.
Above-mentioned row's blade type numerically controlled lathe two close cycles servo-control system, it is characterized in that: described lathe motor is servomotor, described motor driver is motor servo driver.
The present invention compared with prior art has the following advantages:
1, structure of the present invention is simple, reasonable in design, and it is convenient to realize.
2, the scrambler installed on lathe motor and the grating scale being arranged on lathe moving-member worktable are included within the closed loop of position control by the present invention simultaneously, the correction to lathe motor movement error and effective compensation can be realized, achieve the ball-screw to row's blade type lathe, feed screw nut, effective control of the actual displacement of worktable and cutter, the row's of making blade type lathe adopts domestic driving member just can meet or exceed the precision of currently marketed row's blade type numerically-controlled machine, that can reduce row's blade type numerically controlled lathe realizes cost, shorten the manufacturing cycle of row's blade type numerically controlled lathe, improve the machining precision of row's blade type numerically controlled lathe.
3, rapidity of the present invention and followability good, functional reliability is high, failure rate is low, and maintenance and repair cost is low.
4, after adopting the present invention on row's blade type numerically controlled lathe, there is gap in ball screw assembly, or loosens between shaft coupling or feed screw nut mount pad fabricated section, or the fixing link of grating scale occurs to loosen, can from position feedback data more out, to process.
5, of the present invention practical, be convenient to promote the use of.
In sum, structure of the present invention is simple, and it is convenient to realize, and reduces and realizes cost, shorten the manufacturing cycle, improve machining precision, rapidity and followability good, functional reliability is high, failure rate is low, practical.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Fig. 2 is grating scale of the present invention and the limit switch installation site schematic diagram at row's blade type numerically controlled lathe.
Description of reference numerals:
1-lathe cross slid platform; 2-lathe moving-member worktable; 3-left socle;
4-grating scale; 5-collision block support; 6-left limit block;
7-limit switch bracket; 8-limit switch; 9-web joint;
10-zero-bit block; 11-right limit block; 12-right support;
13-positioner; 14-speed control; 15-motor driver;
16-lathe motor; 17-scrambler; 18-computer numerical control (CNC) system for lathe.
Embodiment
As depicted in figs. 1 and 2, the present invention includes computer numerical control (CNC) system for lathe 18, also comprise the positioner 13 connected with described computer numerical control (CNC) system for lathe 18, the speed control 14 connected with described positioner 13 and connecting with described speed control 14 and motor driver 15 for driving lathe motor 16, described lathe motor 16 is provided with the scrambler 17 for carrying out detecting in real time to the rotating speed of lathe motor 16 and turned position, the rotational position signal output terminal of described scrambler 17 connects with the first signal input part of described positioner 13, the tach signal output terminal of described scrambler 17 connects with the signal input part of described speed control 14, the left end of lathe moving-member worktable 2 and right-hand member are separately installed with left socle 3 and right support 12, described left socle 3 and right support 12 are provided with collision block support 5 and the grating scale 4 for carrying out detecting in real time to the displacement of lathe row cutter, and the displacement signal output part of described grating scale 4 connects with the secondary signal input end of described positioner 13, lathe cross slid platform 1 is provided with web joint 9, described web joint 9 is provided with limit switch bracket 7, described limit switch bracket 7 is provided with limit switch 8, described collision block support 5 is from left to right provided with successively all with described limit switch 8 with the use of left limit block 6, zero-bit block 10 and right limit block 11, described limit switch 8 connects with the 3rd signal input part of described positioner 13.
In the present embodiment, described lathe motor 16 is servomotor, and described motor driver 15 is motor servo driver.
Principle of work of the present invention and the course of work are: the rotating speed and the turned position that are arranged on the scrambler 17 pairs of lathe motors 16 on lathe motor 16 are detected in real time, and by the speed feedback signal of lathe motor 16 that detects to speed control 14, the rotational position signal of the lathe motor 16 detected is fed back to positioner 13, simultaneously, the displacement being arranged on the grating scale 4 pairs of lathe row cuttves on lathe moving-member worktable 2 detects in real time, and the lathe detected is arranged the displacement signal feedback of cutter to positioner 13, constitute two-way position closed loop data, define Double close loop servo-control system, positioner 13 exports to speed control 14 after processing the signal that it receives, speed control 14 exports to motor driver 15 after processing the signal that it receives again, motor driver 15 drives lathe motor 16 to operate, and carries out correction and the effective compensation of lathe motor 16 kinematic error in good time.
In the above course of work, the signal that limit switch 8 detects exports to positioner 13 in real time, when limit switch 8 collides zero-bit block 10, illustrate that lathe row cutter is moved to initial null positions place, when limit switch 8 collides left limit block 6, illustrate that lathe row cutter is moved to limit on the left position, when limit switch 8 collides right limit block 11, illustrate that lathe row cutter is moved to limit on the right-right-hand limit position.
In sum, present invention achieves effective control of the actual displacement of the ball-screw to row's blade type lathe, feed screw nut, worktable and cutter, the row's of making blade type lathe adopts domestic driving member just can meet or exceed the precision of currently marketed row's blade type numerically-controlled machine.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.

Claims (2)

1. row's blade type numerically controlled lathe two close cycles servo-control system, comprise computer numerical control (CNC) system for lathe (18), it is characterized in that: also comprise the positioner (13) connected with described computer numerical control (CNC) system for lathe (18), the speed control (14) connected with described positioner (13) and connecting with described speed control (14) and motor driver (15) for driving lathe motor (16), described lathe motor (16) is provided with the scrambler (17) for carrying out detecting in real time to the rotating speed of lathe motor (16) and turned position, the rotational position signal output terminal of described scrambler (17) connects with the first signal input part of described positioner (13), the tach signal output terminal of described scrambler (17) connects with the signal input part of described speed control (14), the left end of lathe moving-member worktable (2) and right-hand member are separately installed with left socle (3) and right support (12), described left socle (3) and right support (12) are provided with collision block support (5) and the grating scale (4) for carrying out detecting in real time to the displacement of lathe row cutter, and the displacement signal output part of described grating scale (4) connects with the secondary signal input end of described positioner (13), lathe cross slid platform (1) is provided with web joint (9), described web joint (9) is provided with limit switch bracket (7), described limit switch bracket (7) is provided with limit switch (8), described collision block support (5) is from left to right provided with successively all with described limit switch (8) with the use of left limit block (6), zero-bit block (10) and right limit block (11), described limit switch (8) connects with the 3rd signal input part of described positioner (13).
2., according to row's blade type numerically controlled lathe two close cycles servo-control system according to claim 1, it is characterized in that: described lathe motor (16) is servomotor, and described motor driver (15) is motor servo driver.
CN201310583626.5A 2013-11-18 2013-11-18 Double closed-loop servo control system of gang tool numerical control lathe Pending CN104656559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310583626.5A CN104656559A (en) 2013-11-18 2013-11-18 Double closed-loop servo control system of gang tool numerical control lathe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310583626.5A CN104656559A (en) 2013-11-18 2013-11-18 Double closed-loop servo control system of gang tool numerical control lathe

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Publication Number Publication Date
CN104656559A true CN104656559A (en) 2015-05-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181523A (en) * 2016-08-11 2016-12-07 无锡百禾工业机器人有限公司 A kind of Digit Control Machine Tool
CN108856307A (en) * 2018-05-23 2018-11-23 山信软件股份有限公司 A kind of mechanical equipment position detecting device and detection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106181523A (en) * 2016-08-11 2016-12-07 无锡百禾工业机器人有限公司 A kind of Digit Control Machine Tool
CN108856307A (en) * 2018-05-23 2018-11-23 山信软件股份有限公司 A kind of mechanical equipment position detecting device and detection method

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Application publication date: 20150527