CN102284659B - Numerical control (NC) forming method for forged piece - Google Patents
Numerical control (NC) forming method for forged piece Download PDFInfo
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- CN102284659B CN102284659B CN 201110244931 CN201110244931A CN102284659B CN 102284659 B CN102284659 B CN 102284659B CN 201110244931 CN201110244931 CN 201110244931 CN 201110244931 A CN201110244931 A CN 201110244931A CN 102284659 B CN102284659 B CN 102284659B
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- motor
- press
- numerical control
- forming method
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Abstract
The invention provides a NC forming method for a forged piece, which is characterized by comprising the following steps of: firstly, determining the value of the comprehensive stiffness of a screw press and a die, comprising the following specific steps of: (1) installing a tonnage instrument on the body of the screw press, and installing the die on the screw press; (2) inputting a motor angular velocity omegac and a screw press rotational inertia J; (3) controlling the motor to act, controlling the motor to be of a constant velocity by a control component while detecting that the motor angular velocity value is equal to the input motor angular velocity omegac, then striking; and (4) calculating the comprehensive stiffness value C of the screw press and the die by a formula according to a pressure value F displayed by the tonnage instrument; and secondly, placing a blank, and implementing NC forming, comprising the following specific steps of: (1) inputting operation data C, Ed and Fd; and (2) calculating the needed motor rotational velocity omega by a formula and realizing the NC forming of a forged piece by controlling the motor to act by the control component; by utilizing the method to process the forged piece, the precision of the forged piece is high, the machining allowance is less, the energy is saved and the efficiency is high.
Description
Technical field
The invention provides a kind of numerical control forming method of press forging, belong to the Mechanical Industry Technology field.
Background technology
Present press forging production has the techniques such as die forging and extruding, die forging has the techniques such as hammer die forging, hydraulic press die forging, crank press die forging, horizontal forging and upsetting machine die forging, friction press die forging, be extruded with the techniques such as hydraulic press extruding, crank press extruding, friction press extruding, artificial or the machinery control of its hammering speed and hammering energy demand, shortcoming are that forging precision is low, power energy error is large.
Summary of the invention
The object of the invention is to for above-mentioned existing problems the numerical control forming method of the press forging that the power of the employing fly press that provide that a kind of forging precision is high, power is can error little can accurately be controlled.Its technical scheme is:
A kind of numerical control forming method of press forging is characterized in that adopting following steps:
At first determine the numerical value of fly press and mould integral stiffness, concrete steps are: 1. the tonnage instrument is installed on the fuselage of fly press, mould is installed on the fly press; 2. by control assembly input motor angular velocity ω c and fly press rotary inertia J; 3. by control assembly control motor action, to be checked when measuring the motor angular velocity ω c that the motor angular velocity value equals to input, control assembly control motor is at the uniform velocity implemented to hit subsequently; 4. the force value F that shows according to the tonnage instrument, by formula
Calculate the integral stiffness value C of fly press and mould;
Secondly, blank is positioned between the fly press mould, implements the numerical control formation of press forging, concrete steps are: 1. input service data C, E
d, F
d, 2. control assembly is according to formula
Calculate the value of required motor speed ω, with the action of ω rotating speed and then the operation of control fly press, realize numerical control formation by the control motor;
ω c is motor angular velocity in the formula, recommends value 3 π; ω is required motor speed, F
dBe workpiece deformation drag, E
dBe the workpiece deformation merit.
The numerical control forming method of described press forging, mould adopts m station die, suppresses a workpiece, implements the numerical control formation of press forging, and concrete steps are: F
d=F
Di, E
d=E
Di, F wherein
Di, E
DiRespectively workpiece deformation drag and the workpiece deformation merit of this workpiece on i station, difference substitution formula
Can obtain this workpiece required motor speed ω on i station
iValue.
The numerical control forming method of described press forging, fly press comprise motor, control assembly, transmission mechanism and be installed in operating mechanism on the fuselage, and wherein control assembly is connected with motor, and motor output shaft connects operating mechanism by transmission mechanism.
The numerical control forming method of described press forging, control assembly comprises electric machine controller, brake, angular displacement sensor, Programmable Logic Controller and touch-screen, wherein brake and angular displacement sensor are installed on the output shaft of motor, the input of the output termination motor of electric machine controller, the input of electric machine controller connects respectively the output of angular displacement sensor, Programmable Logic Controller and touch-screen, the control end of the output termination brake of Programmable Logic Controller, the input of Programmable Logic Controller connects touch-screen.
The numerical control forming method of described press forging, transmission mechanism refers to belt transmission and gear drive, wherein belt transmission comprises driving pulley, driving-belt and driven pulley, gear drive comprises gear shaft and driven gear, driving pulley is fixedly mounted on the output shaft of motor, driven pulley is fixedly mounted on the gear shaft, and driven gear is fixedly mounted in the operating mechanism.
The numerical control forming method of described press forging, operating mechanism comprises screw rod, top nut, lower nut and slide block, and wherein the upper end connection for transmission mechanism of screw rod connects fuselage by top nut in the middle part of the screw rod, and the screw rod bottom is by the lower nut connection sliding block.
The numerical control forming method of described press forging, mould adopts multi-station mold.
The numerical control forming method of described press forging, mould comprises upper die and lower die.
The numerical control forming method of described press forging, motor adopts switched reluctance machines or reversible electric machine.
The numerical control forming method of described press forging, angular displacement sensor can adopt rotary transformer or Hall element, and brake adopts disk brake.
Described blank, workpiece, press forging be same object before shaping, the different names of the neutralization that is shaped after being shaped.
The present invention compared with prior art, its advantage is:
1, the present invention adopts fly press numerical control speed to be shaped, and the forming parameter of press forging is accurately controlled by the input data, processes in this way press forging, and the press forging precision is high, allowance is little, efficient energy-saving.Belong to high-quality, efficient, energy-conservation, labour-saving Plastic Forming new technology, adapt to the direction of sustainable development, can satisfy the requirements at the higher level that Precision Forming Technology is proposed, realize the objective of the struggle of industrial quarters " the clean shaping "
2, the present invention can be used for the cold conditions of various metal forging, warm attitude and hot excellent suitability for press forming.
Description of drawings
Fig. 1 is the structural representation of the fly press embodiment that the present invention relates to.
Among the figure: 1, electric machine controller 2, brake 3, angular displacement sensor 4, motor 5, driving pulley 6, driving-belt 7, driven pulley 8, gear shaft 9, driven gear 10, top nut 11, screw rod 12, lower nut 13, slide block 14, patrix 15, tonnage instrument 16, counterdie 17, backing plate 18, fuselage 19, Programmable Logic Controller 20, touch-screen
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing: fly press comprises motor 4, control assembly, transmission mechanism and is installed in operating mechanism on the fuselage 18, wherein:
Control assembly comprises electric machine controller 1, brake 2, angular displacement sensor 3, Programmable Logic Controller 19 and touch-screen 20, wherein brake 2 and angular displacement sensor 3 are installed on the output shaft of motor 4, the input of the output termination motor 4 of electric machine controller 1, the input of electric machine controller 1 connects respectively the output of angular displacement sensor 3, Programmable Logic Controller 19 and touch-screen 20, the control end of the output termination brake 2 of Programmable Logic Controller 19, the input of Programmable Logic Controller 19 connects touch-screen 20.
Transmission mechanism refers to belt transmission and gear drive, wherein belt transmission comprises driving pulley 5, driving-belt 6 and driven pulley 7, gear drive comprises gear shaft 8 and driven gear 9, driving pulley 5 is fixedly mounted on the output shaft of motor 4, driven pulley 7 is fixedly mounted on the gear shaft 8, and driven gear 9 is fixedly mounted in the operating mechanism.
Operating mechanism comprises screw rod 11, top nut 10, lower nut 12 and slide block 13, the upper end connection for transmission mechanism of screw rod 11 wherein, and screw rod 11 middle parts connect fuselages 18 by top nut 10, and screw rod 11 bottoms are by lower nut 12 connection sliding blocks 13.
Embodiment 1: module adopts a station die, suppresses a press forging, and the motor angular velocity ω c that is used for the mensuration integral stiffness is 10s
-1, fly press rotary inertia J is 100kgm
2, workpiece deformation drag F
dBe 5 * 10
6N, workpiece deformation merit E
dBe 10 * 10
3J, concrete forming process is:
At first determine the numerical value of fly press and mould integral stiffness, concrete steps are: 1. tonnage instrument 15 is installed on the fuselage 18 of fly press, the slide block 13 upper and lower moulds 16 that patrix 14 are installed to fly press are installed on the backing plate 17 of fly press; 2. by touch-screen 20 input motor angular velocity ω c and fly press rotary inertia J values, be respectively 10s
-1And 100kgm
23. by 4 actions of electric machine controller 1 control motor, when treating that angular displacement sensor 3 detects the motor angular velocity ω c that the motor angular velocity value equals to input, electric machine controller 1 control motor 4 is at the uniform velocity implemented to hit subsequently, and the force value F that tonnage instrument 15 shows is 4 * 10
6N; 4. the force value F that shows according to tonnage instrument 15, by formula
The integral stiffness value of calculating fly press and mould is 1.6 * 10
9Nm
-1
Secondly, blank is positioned between fly press patrix 14, the counterdie 16, implements the numerical control formation of press forging, concrete steps are: 1. input service data: C=1.6 * 10
9Nm
-1, F
d=5 * 10
6N, E
d=10 * 10
3J,
2. control assembly is according to formula
The value of calculating the required motor speed ω of this press forging shaping is 18.9s
-1, by controlling motor 4 with 18.9s
-1Rotating speed action and then the operation of control fly press, realize the numerical control formation of press forging.
Embodiment 2: mould adopts three station dies, suppresses a press forging, and the motor angular velocity ω c that is used for the mensuration integral stiffness is 10s
-1, fly press rotary inertia J is 100kgm
2, three stations workpiece deformation drag F
dBe respectively F
D1=3 * 10
6N, F
D2=5 * 10
6N, F
D3=4 * 10
6N, workpiece deformation merit E
dBe respectively E
D1=9 * 10
3J, E
D2=10 * 10
3J, E
D3=8 * 10
3J, concrete forming process is:
At first determine the numerical value of fly press and mould integral stiffness, concrete steps are with embodiment 1, and the integral stiffness value that obtains fly press and mould is 1.6 * 10
9Nm
-1, by touch-screen the C value is inputted;
Secondly, first blank is positioned over station one between fly press patrix 14, the counterdie 16, inputs the workpiece deformation drag F of this first station of press forging
D1With workpiece deformation merit E
D1, be respectively F
D1=3 * 10
6N and E
D1=9 * 10
3J, control assembly is according to formula
The be shaped value of required motor speed of the press forging that calculates first station is ω
1=15.4s
-1, by controlling motor 4 with 15.4s
-1Rotating speed action and then the operation of control fly press, realize that this press forging is at the numerical control formation of first station;
Then, the workpiece that again first station is shaped is positioned over the station two between fly press patrix 14, the counterdie 16, inputs the workpiece deformation drag F of second station of this press forging
D2With workpiece deformation merit E
D2, be respectively F
D2=5 * 10
6N and E
D2=10 * 10
3J, control assembly is according to formula
The required motor speed value of press forging shaping that calculates second station is ω
2=18.9s
-1, by controlling motor 4 with 18.9s
-1Rotating speed action and then the operation of control fly press, realize that this press forging is at the numerical control formation of second station;
At last, the workpiece that second station is shaped is positioned over the station three between fly press patrix 14, the counterdie 16, inputs the workpiece deformation drag F of the 3rd station of this press forging
D3With workpiece deformation merit E
D3, be respectively F
D3=4 * 10
6N and E
D3=8 * 10
3J, control assembly is according to formula
The be shaped value of required motor speed of the press forging that calculates the 3rd station is ω
3=16.1s
-1, by controlling motor 4 with 16.1s
-1Rotating speed action and then the operation of control fly press, realize that this press forging is at the numerical control formation of the 3rd station.
Claims (10)
1. the numerical control forming method of a press forging is characterized in that adopting following steps:
At first determine the numerical value of fly press and mould integral stiffness, concrete steps are: 1. tonnage instrument (15) is installed on the fuselage (18) of fly press, mould is installed on the fly press; 2. by control assembly input motor angular velocity ω c and fly press rotary inertia J; 3. by control assembly control motor (4) action, to be checked when measuring the motor angular velocity ω c that the motor angular velocity value equals to input, control assembly control motor (4) is at the uniform velocity implemented to hit subsequently; 4. the force value F that shows according to tonnage instrument (15), by formula
Calculate the integral stiffness value C of fly press and mould;
Secondly, blank is positioned between the fly press mould, implements the numerical control formation of press forging, concrete steps are: 1. input service data C, E
d, F
d, 2. control assembly is according to formula
Calculate the value of required motor speed ω, with the action of ω rotating speed and then the operation of control fly press, realize numerical control formation by control motor (4);
ω c is motor angular velocity in the formula, recommends value 3 π; ω is required motor speed, F
dBe workpiece deformation drag, E
dBe the workpiece deformation merit.
2. the numerical control forming method of press forging as claimed in claim 1 is characterized in that: mould adopts m station die, suppresses a workpiece, the numerical control formation of enforcement press forging, and concrete steps are: F
d=F
Di, E
d=E
Di, F wherein
Di, E
DiRespectively workpiece deformation drag and the workpiece deformation merit of this workpiece on i station, difference substitution formula
Can obtain this workpiece required motor speed ω on i station
iValue.
3. the numerical control forming method of press forging as claimed in claim 1, it is characterized in that: fly press comprises motor (4), control assembly, transmission mechanism and is installed in operating mechanism on the fuselage (18), wherein control assembly is connected with motor (4), and motor (4) output shaft connects operating mechanism by transmission mechanism.
4. the numerical control forming method of press forging as claimed in claim 3, it is characterized in that: control assembly comprises electric machine controller (1), brake (2), angular displacement sensor (3), Programmable Logic Controller (19) and touch-screen (20), wherein brake (2) and angular displacement sensor (3) are installed on the output shaft of motor (4), the input of the output termination motor (4) of electric machine controller (1), the input of electric machine controller (1) connects respectively angular displacement sensor (3), the output of Programmable Logic Controller (19) and touch-screen (20), the control end of the output termination brake (2) of Programmable Logic Controller (19), the input of Programmable Logic Controller (19) connects touch-screen (20).
5. the numerical control forming method of press forging as claimed in claim 3, it is characterized in that: transmission mechanism refers to belt transmission and gear drive, wherein belt transmission comprises driving pulley (5), driving-belt (6) and driven pulley (7), gear drive comprises gear shaft (8) and driven gear (9), driving pulley (5) is fixedly mounted on the output shaft of motor (4), driven pulley (7) is fixedly mounted on the gear shaft (8), and driven gear (9) is fixedly mounted in the operating mechanism.
6. the numerical control forming method of press forging as claimed in claim 3, it is characterized in that: operating mechanism comprises screw rod (11), top nut (10), lower nut (12) and slide block (13), the upper end connection for transmission mechanism of screw rod (11) wherein, screw rod (11) middle part connects fuselage (18) by top nut (10), and screw rod (11) bottom is by lower nut (12) connection sliding block (13).
7. the numerical control forming method of press forging as claimed in claim 3 is characterized in that: mould employing multi-station mold.
8. the numerical control forming method of press forging as claimed in claim 3, it is characterized in that: mould comprises patrix (14) and counterdie (16).
9. the numerical control forming method of press forging as claimed in claim 1 is characterized in that: motor (4) employing switched reluctance machines or reversible electric machine.
10. the numerical control forming method of press forging as claimed in claim 4 is characterized in that: angular displacement sensor (3) employing rotary transformer or Hall element, brake (2) employing disk brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110244931 CN102284659B (en) | 2011-08-23 | 2011-08-23 | Numerical control (NC) forming method for forged piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110244931 CN102284659B (en) | 2011-08-23 | 2011-08-23 | Numerical control (NC) forming method for forged piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102284659A CN102284659A (en) | 2011-12-21 |
| CN102284659B true CN102284659B (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110244931 Expired - Fee Related CN102284659B (en) | 2011-08-23 | 2011-08-23 | Numerical control (NC) forming method for forged piece |
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|---|---|
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313478B (en) * | 2016-08-22 | 2018-11-30 | 中聚信海洋工程装备有限公司 | A kind of process deepening Variable pitch screw and its net die forging screw channel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2887479Y (en) * | 2006-03-07 | 2007-04-11 | 华中科技大学 | Moving electromagnetic coil device for gradual panel forming |
| CN201324808Y (en) * | 2008-11-04 | 2009-10-14 | 山东法因数控机械股份有限公司 | Cylindrical steel reinforcement framework numerical control forming machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1372884B1 (en) * | 2001-03-29 | 2010-12-22 | Showa Denko K.K. | Closed die forging method and yoke produced by the method |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2887479Y (en) * | 2006-03-07 | 2007-04-11 | 华中科技大学 | Moving electromagnetic coil device for gradual panel forming |
| CN201324808Y (en) * | 2008-11-04 | 2009-10-14 | 山东法因数控机械股份有限公司 | Cylindrical steel reinforcement framework numerical control forming machine |
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|---|---|
| CN102284659A (en) | 2011-12-21 |
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Granted publication date: 20130123 Termination date: 20130823 |