CN203641174U - Pressure and speed synchronous and composite controller for hydraulic cylinders of machine tool - Google Patents

Pressure and speed synchronous and composite controller for hydraulic cylinders of machine tool Download PDF

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Publication number
CN203641174U
CN203641174U CN201320850126.9U CN201320850126U CN203641174U CN 203641174 U CN203641174 U CN 203641174U CN 201320850126 U CN201320850126 U CN 201320850126U CN 203641174 U CN203641174 U CN 203641174U
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CN
China
Prior art keywords
hydraulic cylinder
pressure
cylinder
oil
servo valve
Prior art date
Application number
CN201320850126.9U
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Chinese (zh)
Inventor
刘薇娜
杨立峰
刘志刚
张相荣
杜倩
苏东楠
董春艳
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刘薇娜
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Priority to CN201320850126.9U priority Critical patent/CN203641174U/en
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Publication of CN203641174U publication Critical patent/CN203641174U/en

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Abstract

The utility model discloses a pressure and speed synchronous and composite controller for hydraulic cylinders of a machine tool. A touch screen and a programmable controller are connected and communicated with each other through ethernet cables, and the programmable controller is respectively connected with an upper proportional servo valve and a lower proportional servo valve. The output signal ports of an upper pressure transducer and a lower pressure transducer are connected with programmable controller through signal lines, and the pressure measure ports of the upper pressure transducer and the lower pressure transducer are connected respectively with a rodless chamber of an upper hydraulic cylinder and the rodless chamber of a lower hydraulic cylinder to measure the pressure of the rodless chambers of the hydraulic cylinders of the machine tool. When a touch screen, a programmable controller, proportional servo valves and pressure transducers are employed, one of the upper hydraulic cylinder and lower hydraulic cylinder controls speed and the other controls pressure when the upper hydraulic cylinder and the lower hydraulic cylinder to extrude grind material in reciprocating way. The speed control cylinder transmits force and motion to the pressure control cylinder by extruding the grind material, thereby ensuring the synchronous and coordinative operation of the two cylinders. The pressure and speed synchronous and composite controller solves the problem that a conventional control is unable to achieve on-line control of the synchronous operation of multiple reciprocating hydraulic cylinders, and can adjust the pressure and speed during operation.

Description

The synchronous composite control apparatus of machine tool hydraulic cylinder pressure-speed
Technical field
The utility model discloses the synchronous composite control apparatus of a kind of machine tool hydraulic cylinder pressure-speed, belongs to Machinery Tool Automation control technique field.
Background technique
At present, mainly contain pressure control, flow control and piston displacement control for the control of machine tool hydraulic cylinder, the compound control of pressure flow many passing ratios series flow control valve and the proportional pressure control valve of oil hydraulic cylinder are realized, but hydraulic system is more complicated and do not relate to hydraulic cylinder synchronous operation problem.Pressure, speed when traditional control method often cannot be realized the multiple reciprocating hydraulic cylinder synchronous operation of on line control and operation are adjustable.
Disclose two single-acting cylinders in the patent No. 200620068988.6 and realized bidirectional driving apparatus by closed abrasive, the synchronous coordination that it has realized upper and lower two single-acting cylinders moves, but the speed of operation cylinder is non-adjustable, pressure cannot be realized adjustable online, need manual tune back pressure valve, inconvenient operation and degree of regulation are low; Commutation when its another shortcoming is two single-acting cylinder motions need complete by pressure relay, and operational efficiency is low.
A kind of abrasive particle fluid automatic polishing machine is disclosed in the patent that is 201220515308.6 at application number, it realizes the automatic start-stop of abrasive particle fluid polishing machine by PLC touch screen, polish pressure is by matched moulds pressurizer keeping system tonnage, but still the pressure, the speed that do not realize reciprocating hydraulic cylinder are adjustable, and oil hydraulic cylinder to-and-fro motion realizes by reciprocal limit stoper, machine tool structure complexity, hydraulic cylinder commutation is dumb, is unfavorable for promoting lathe work efficiency.
Summary of the invention
The utility model discloses the synchronous composite control apparatus of a kind of machine tool hydraulic cylinder pressure-speed, has solved traditional control gear and cannot realize the multiple reciprocating hydraulic cylinder synchronous operation of on line control, has when operation pressure, function that speed is adjustable.
the synchronous composite control apparatus of the disclosed machine tool hydraulic cylinder of the utility model pressure-speed, its technical solution is as follows:
Formed by touch screen, programmable controller, the next proportional servo valve, the next oil hydraulic cylinder, the next abrasive material cylinder, machine tool fixture, upper abrasive material cylinder, upper oil hydraulic cylinder, upper proportional servo valve, upper pressure transducer, the next pressure transducer, signaling line, hydraulic oil pipeline and Ethernet cable line; Wherein, touch screen is connected and is communicated by letter by Ethernet cable line with programmable controller, the setting of required pressure and parameter of velocity while completing the motion of machine tool hydraulic cylinder; Programmable controller is connected with upper proportional servo valve and the next proportional servo valve respectively by signaling line, to realize the control to servovalve; Upper pressure transducer is connected with programmable controller by signaling line with the next pressure transducer output signal port, the pressure measurement mouth of upper pressure transducer and the next pressure transducer by hydraulic oil pipeline respectively with the rodless cavity UNICOM of rodless cavity and the next oil hydraulic cylinder of upper oil hydraulic cylinder, complete the measurement to machine tool hydraulic cylinder rodless cavity internal pressure; The oil outlet of the next proportional servo valve and return opening access respectively rodless cavity and the rod chamber of the next oil hydraulic cylinder by hydraulic oil pipeline; The oil outlet of upper proportional servo valve and return opening access respectively rod chamber and the rodless cavity of upper oil hydraulic cylinder by hydraulic oil pipeline; The filler opening oil hydraulic pump oil outlet of the filler opening of the next proportional servo valve and upper proportional servo valve connects; Coaxial between the next oil hydraulic cylinder, the next abrasive material cylinder, upper abrasive material cylinder and upper oil hydraulic cylinder, and the next abrasive material cylinder and upper abrasive material cylinder clamping machine tool fixture.
When machine tooling hydraulic cylinder works, for example the next oil hydraulic cylinder ejects, when simultaneously upper oil hydraulic cylinder shrinks, pressure and velocity amplitude that oil hydraulic cylinder machining needs are set on the human-computer interaction interface of touch screen, touch screen receives signal and by Ethernet cable line, signalization is passed to programmable controller, programmable controller also receives from the voltage signal of upper pressure transducer and the next pressure transducer (0 ~ 10V), all signals after the control program downloaded in module is processed, export certain voltage signal (10V ~+10V) to upper proportional servo valve and the next proportional servo valve with control ratio valve core of servo valve position, thereby control the flow flowing in the next oil hydraulic cylinder rodless cavity and control hydraulic cylinder speed, the return pressure of controlling in upper oil hydraulic cylinder rodless cavity controls cylinder pressure.
When after the program control hydraulic cylinder commutation of downloading in programmable controller, be that upper oil hydraulic cylinder ejects, when simultaneously the next oil hydraulic cylinder shrinks, programmable controller is exported certain voltage signal (10 ~+10V), control the flow flowing in upper oil hydraulic cylinder rodless cavity and control hydraulic cylinder speed, the return pressure of controlling in the next oil hydraulic cylinder rodless cavity controls cylinder pressure; Until after hydraulic cylinder commutation, a machining cycle is complete.Enter after next circulation, the next oil hydraulic cylinder ejects, and simultaneously upper oil hydraulic cylinder shrinks, and program control is same as above, so moves in circles, until the complete shutdown of machining cycle.
good effect of the present utility model is:
Adopt the structures such as touch screen, programmable controller, proportional servo valve and pressure transducer, in the time of the next oil hydraulic cylinder and the motion of upper oil hydraulic cylinder reciprocating extrusion abrasive material, one is carried out speed control, another carries out pressure control, speed control cylinder passes to pressure control cylinder by extruding abrasive material by force and motion, thereby guarantees the two synchronous coordination operation.Solve traditional control gear and cannot realize the synchronous operation of the multiple reciprocating hydraulic cylinders of on line control, there is when operation pressure, function that speed is adjustable.
Accompanying drawing explanation
Fig. 1 is the utility model machine tool hydraulic cylinder control gear schematic diagram.
In Fig. 1: 1. touch screen, 2. programmable controller, 3. the next proportional servo valve, 4. the next oil hydraulic cylinder, 5. the next abrasive material cylinder, 6. machine tool fixture, 7. upper abrasive material cylinder, 8. upper oil hydraulic cylinder, 9. upper proportional servo valve, 10. upper pressure transducer, 11. the next pressure transducers, 12 is signaling line, and 13 is hydraulic oil pipeline, 14. Ethernet cable lines.
Embodiment
Be specifically described with regard to an embodiment of the present utility model below in conjunction with accompanying drawing, as shown in Figure 1,
Machine tool hydraulic cylinder control gear is mainly made up of touch screen 1, programmable controller 2, the next proportional servo valve 3, the next oil hydraulic cylinder 4, the next abrasive material cylinder 5, machine tool fixture 6, upper abrasive material cylinder 7, upper oil hydraulic cylinder 8, upper proportional servo valve 9, upper pressure transducer 10, the next pressure transducer 11, signaling line 12, hydraulic oil pipeline 13 and RJ45 type Ethernet cable line 14.Wherein, touch screen 1 is connected and is communicated by letter by Ethernet cable line (RJ45 type) 14 with programmable controller 2, the setting of required pressure and parameter of velocity while completing the motion of machine tool hydraulic cylinder; Programmable controller 2 is connected with upper proportional servo valve 9 and the next proportional servo valve 3 respectively by signaling line 12, to realize the control to servovalve; Upper pressure transducer 10 is connected with programmable controller 2 by signaling line 12 with the next pressure transducer 11 output signal ports, pressure measurement mouth by hydraulic oil pipeline 13 respectively with the rodless cavity UNICOM of rodless cavity and the next oil hydraulic cylinder 4 of upper oil hydraulic cylinder 8, complete the measurement to machine tool hydraulic cylinder rodless cavity internal pressure; The oil outlet A1 of the next proportional servo valve 3 and return opening B1 access respectively rodless cavity and the rod chamber of the next oil hydraulic cylinder 4 by hydraulic oil pipeline 13; The oil outlet A2 of upper proportional servo valve 9 and return opening B2 access respectively rod chamber and the rodless cavity of upper oil hydraulic cylinder 8 by hydraulic oil pipeline 13; The oil inlet P 1 of the next proportional servo valve 3 and the oil inlet P 2 of upper proportional servo valve 9 connect with oil hydraulic pump oil outlet.
Machine tool fixture 6 is for clamping workpiece to be processed, the next abrasive material cylinder 5 of lathe and the rodless cavity of upper abrasive material cylinder 7 are for depositing the required special abrasive material of machine tool processing workpiece, coaxial between the next oil hydraulic cylinder 4, the next abrasive material cylinder 5, upper abrasive material cylinder 7 and upper oil hydraulic cylinder 8, and the next abrasive material cylinder 5 and upper abrasive material cylinder 7 clamp machine tool fixture 6.When machine tool processing workpiece, the abrasive material in the next oil hydraulic cylinder 4 and upper oil hydraulic cylinder 8 reciprocating extrusion lathe abrasive material cylinders makes its duct of flowing through workpiece to be processed and fixture composition, to reach processing object; And when the next oil hydraulic cylinder 4 and the 8 reciprocating extrusion motion of upper oil hydraulic cylinder, one of them is speed control cylinder, another is pressure control cylinder, speed control cylinder passes to pressure control cylinder by extruding abrasive material by force and motion, thereby guarantee the two synchronous coordination operation, pressure control cylinder is used for guaranteeing tonnage.
Machine tooling process is completed by the control program control of programmable controller 2 interior downloads, pressure and velocity amplitude that the oil hydraulic cylinder machining arranging on the human-computer interaction interface of touch screen 1 needs pass to programmable controller 2 by RJ45 type Ethernet cable line 14, and programmable controller 2 also receives the voltage signal (0 ~ 10V) from upper pressure transducer 10 and the next pressure transducer 11; When the next oil hydraulic cylinder 4 ejects, when upper oil hydraulic cylinder 8 shrinks simultaneously, programmable controller 2 export certain voltage signal (10V ~+10V) to upper proportional servo valve 9 and the next proportional servo valve 3 with control ratio valve core of servo valve position, thereby control the flow flowing in the next oil hydraulic cylinder 4 rodless cavities and control hydraulic cylinder speed, the return pressure of controlling in upper oil hydraulic cylinder 8 rodless cavities controls cylinder pressure.
When after the program control hydraulic cylinder commutation of downloading in programmable controller, be that upper oil hydraulic cylinder 8 ejects, when the next oil hydraulic cylinder 4 shrinks simultaneously, programmable controller 2 is exported certain voltage signal (10 ~+10V), control the flow flowing in upper oil hydraulic cylinder 8 rodless cavities and control hydraulic cylinder speed, the return pressure of controlling in the next oil hydraulic cylinder 4 rodless cavities controls cylinder pressure; Until after hydraulic cylinder commutation, a machining cycle is complete.Enter next circulation, the next oil hydraulic cylinder 4 ejects, and upper oil hydraulic cylinder 8 shrinks simultaneously, controls same as abovely, so moves in circles, until the complete shutdown of machining cycle.

Claims (1)

1. the synchronous composite control apparatus of machine tool hydraulic cylinder pressure-speed, is characterized in that:
Formed by touch screen, programmable controller, the next proportional servo valve, the next oil hydraulic cylinder, the next abrasive material cylinder, machine tool fixture, upper abrasive material cylinder, upper oil hydraulic cylinder, upper proportional servo valve, upper pressure transducer, the next pressure transducer, signaling line, hydraulic oil pipeline and Ethernet cable line; Wherein, touch screen and programmable controller connect by Ethernet cable line; Programmable controller is connected with upper proportional servo valve and the next proportional servo valve respectively by signaling line; Upper pressure transducer is connected with programmable controller by signaling line with the next pressure transducer output signal port, the pressure measurement mouth of upper pressure transducer and the next pressure transducer by hydraulic oil pipeline respectively with the rodless cavity UNICOM of rodless cavity and the next oil hydraulic cylinder of upper oil hydraulic cylinder; The oil outlet of the next proportional servo valve and return opening access respectively rodless cavity and the rod chamber of the next oil hydraulic cylinder by hydraulic oil pipeline; The oil outlet of upper proportional servo valve and return opening access respectively rod chamber and the rodless cavity of upper oil hydraulic cylinder by hydraulic oil pipeline; The filler opening of the next proportional servo valve and the filler opening of upper proportional servo valve connect with oil hydraulic pump oil outlet; Coaxial between the next oil hydraulic cylinder, the next abrasive material cylinder, upper abrasive material cylinder and upper oil hydraulic cylinder, and the next abrasive material cylinder and upper abrasive material cylinder clamping machine tool fixture.
CN201320850126.9U 2013-12-23 2013-12-23 Pressure and speed synchronous and composite controller for hydraulic cylinders of machine tool CN203641174U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320850126.9U CN203641174U (en) 2013-12-23 2013-12-23 Pressure and speed synchronous and composite controller for hydraulic cylinders of machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320850126.9U CN203641174U (en) 2013-12-23 2013-12-23 Pressure and speed synchronous and composite controller for hydraulic cylinders of machine tool

Publications (1)

Publication Number Publication Date
CN203641174U true CN203641174U (en) 2014-06-11

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Application Number Title Priority Date Filing Date
CN201320850126.9U CN203641174U (en) 2013-12-23 2013-12-23 Pressure and speed synchronous and composite controller for hydraulic cylinders of machine tool

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912856A (en) * 2015-06-16 2015-09-16 南通市腾达锻压机床厂 Double oil cylinder synchronous servo control system device
CN105465074A (en) * 2014-09-02 2016-04-06 天津市天锻压力机有限公司 Powder hydraulic machine process synchronous motion system based on Delta controller
CN105984022A (en) * 2015-03-02 2016-10-05 任丘市永基建筑安装工程有限公司 Combined die bottom hydraulic cylinder synchronization technology

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105465074A (en) * 2014-09-02 2016-04-06 天津市天锻压力机有限公司 Powder hydraulic machine process synchronous motion system based on Delta controller
CN105984022A (en) * 2015-03-02 2016-10-05 任丘市永基建筑安装工程有限公司 Combined die bottom hydraulic cylinder synchronization technology
CN104912856A (en) * 2015-06-16 2015-09-16 南通市腾达锻压机床厂 Double oil cylinder synchronous servo control system device

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140611

Termination date: 20141223

EXPY Termination of patent right or utility model