CN101513696B - Fixed pipeline numerical control end surface beveller - Google Patents

Fixed pipeline numerical control end surface beveller Download PDF

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Publication number
CN101513696B
CN101513696B CN2009100489568A CN200910048956A CN101513696B CN 101513696 B CN101513696 B CN 101513696B CN 2009100489568 A CN2009100489568 A CN 2009100489568A CN 200910048956 A CN200910048956 A CN 200910048956A CN 101513696 B CN101513696 B CN 101513696B
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China
Prior art keywords
knife rest
cutterhead
motor
beveller
rotating speed
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CN2009100489568A
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CN101513696A (en
Inventor
戚发明
李飞
谭忆辉
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SHANGHAI XICAN INDUSTRIAL Co Ltd
SHANGHAI QIANSHAN PIPING TECHNOLOGY Co Ltd
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SHANGHAI XICAN INDUSTRIAL Co Ltd
SHANGHAI QIANSHAN PIPING TECHNOLOGY Co Ltd
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Priority to CN2009100489568A priority Critical patent/CN101513696B/en
Publication of CN101513696A publication Critical patent/CN101513696A/en
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Abstract

The invention relates to a fixed pipeline numerical control end surface beveller comprising a rack guide rail and a main machine arranged on the rack guide rail; a cutter disk is arranged on the main machine, the cutter disk rotates by taking a main shaft of the main machine as the center, a rail fixedly mounted along the radial direction of the cutter disk is arranged on the cutter disk, a cutter rack which translates along the rail is arranged on the guide rail, and the cutter rack and the cutter disk are respectively driven by a transmission mechanism and a motor thereof; the fixed pipeline numerical control end surface beveller further comprises a control unit, and the control unit carries out the real-time detection of the rotation speed of the cutter disk and controls the rotation speed of the motor of the cutter rack. The fixed pipeline numerical control end surface beveller controls the feed of the cutter rack (the radial feed of the cutter rack to a pipeline) by a clutch and the difference between the rotation speed of the main shaft (cutter disk) and the rotation speed of a servo motor of a feeding shaft of the cutter rack, thereby realizing the processing of different end surface bevels of the pipelines with different diameters and different wall thicknesses and flexibly meeting the requirements of processing of the pipelines with the different lengths by minimal configuration and engineering capacity.

Description

Fixed pipeline numerical control end surface beveller
Technical field
The present invention relates to a kind of fixed pipeline numerical control end surface beveller.
Background technology
Usually when thick workpiece docks; Cut a gradient groove in order to increase the weld seam contact area at the docking port machine of workpiece, beveling machine is exactly that machine is cut the equipment that groove is used, original manual end surface beveller; Because knife rest axial feed (being called for short the X axle) and radial feed (being called for short the Z axle) are mainly manually to be controlled to be the master; Can not carry out accurate poor complementary operation, cause control accuracy not enough, thereby can not process complex face patterns such as " U " type, two " V " type.And converted products is single, and the converted products uniformity is poor, and automaticity is lower, and the operator is required height, and operator's working strength is big.In addition, if the processing of complex face patterns such as " U " type of realization, two " V " type also can adopt the structure of numerically controlled lathe and cutting way to realize; But numerically controlled lathe is a workpiece to be contained on the main shaft, main axis rotation, and workpiece is followed main axis rotation; And knife rest is not rotated motion, and the motor through both direction carries out Feed Motion Control, and the radial feed of knife rest and main axis rotation (being the speed of mainshaft) are separate; Because when the workpiece volume weight is all bigger (for example machining large pipeline); Its spindle power is very big, bad adaptability, and machinery input and construction costs are huge.
Summary of the invention
The present invention has overcome above-mentioned shortcoming, and a kind of fixed pipeline numerical control end surface beveller is provided.
The present invention solves the technical scheme that its technical problem takes: comprise rack rail and be arranged on the main frame on the said rack rail; Said main frame is provided with cutterhead; Said cutterhead is the center rotation with the main shaft of main frame, and it is characterized in that: said cutterhead is provided with along the radially hard-wired track of cutterhead, and the knife rest along said track translation is installed on the said guide rail; Said knife rest, cutterhead pass through transmission mechanism and motor-driven separately respectively; Also comprise a control module, said control module detects the rotating speed of cutterhead in real time, controls said knife rest rotating speed of motor.
Said control module comprises rotation speed detection unit and spindle encoder, and said rotation speed detection unit sends to encoder with detected cutterhead tach signal, adjusts the knife rest rotating speed of motor in real time through encoder.
The output transmission of said knife rest motor has the power transmission shaft of bevel gear for a front end, and the bevel gear that said bevel gear and another are arranged on the leading screw meshes in pairs, and said knife rest is meshed with said leading screw as track.
The output of said knife rest motor also can be provided with a reductor, gives said power transmission shaft through said reductor transmission.
Also can be provided with clutch between said power transmission shaft and the said knife rest motor.
The rotating ratio of said two bevel gears can be positive integer.
The relation of said knife rest rotating speed of motor and cutterhead rotating speed and the Z axle amount of feeding can be:
F Z=(N Z-N Main) * f Z* η
Wherein: Nz is the knife rest motor speed
N MainBe the cutterhead rotating speed
Fz is leading screw 5 pitch
η is that gear compares correction factor
Fz is the knife rest amount of feeding.
When starting or finishing, the relation of said knife rest rotating speed of motor and cutterhead rotating speed and the knife rest amount of feeding can be:
F Z=(N Z-N Main) * f Z* η * β
Wherein: Nz is the knife rest motor speed
N MainBe the cutterhead rotating speed
Fz is a leading screw pitch
η is that gear compares correction factor
β is the acceleration and deceleration correction factor, confirms according to the frame for movement and the parameter of electric machine
Fz is the knife rest amount of feeding.
The present invention adopts workpiece (pipeline) fixing, and knife rest and feed system thereof (leading screw) are fixed on the main shaft disk, control the feeding (knife rest is to the pipeline radial feed) of knife rest through clutch, main shaft (cutterhead) rotating speed and knife rest feed shaft servomotor speed discrepancy; Realization with minimum configuration and quantities, is satisfied the processing of the pipeline of different length to the processing of the different end face grooves of pipeline of different-diameter, different wall flexibly; In addition, through spindle encoder, can realize complex face patterns such as " U " type, two " V " type; The converted products variation; Lower to operator's requirement simultaneously, good product consistency, the disposable full-automatic processing of roughing and fine finishining.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the theory diagram of control module among the present invention.
The specific embodiment
As shown in fig. 1, the present invention includes rack rail 4 and be arranged on the main frame 1 on the said rack rail 4, said main frame is provided with cutterhead 2; Said cutterhead 2 is the center rotation with the main shaft of main frame 1; Said cutterhead 2 is provided with along the radially hard-wired leading screw 5 of cutterhead, and said leading screw 5 is provided with bevel gear 9, and knife rest 12 is meshed with said leading screw 5 as track; Can in leading screw 5 rotating process, drive the radial translation of said knife rest 12 along said cutterhead 2.Said bevel gear 9 and another bevel gear 3 engagements; Said another bevel gear 3 is fixed on the front end of a power transmission shaft 6; The other end of said power transmission shaft 6 is provided with electromagnetic clutch 23; Said clutch 23 is connected with reductor 27 through the gear train that is made up of gear wheel 24 and pinion 30, and said reductor 27 drives through a knife rest motor (not indicating among the figure), and said knife rest motor adopts servomotor.It is identical with existing beveling machine along the kind of drive of axis feeding that said rack rail drives main frame, repeats no more here.Said clutch can make power transmission shaft break away from the drive controlling of knife rest motor when system debug.
Said main frame also is connected with a control module; As shown in Figure 2, said control module comprises rotation speed detection unit and spindle encoder, and said rotation speed detection unit is with detected cutterhead rotating speed; Be that spindle speed signal sends to encoder, adjust the knife rest rotating speed of motor in real time through encoder.
Said cutterhead 2 drives through a threephase asynchronous machine, along the X axle, promptly along the axial lathe bed direction of motion of processed pipeline; Rotate according to certain speed; Said knife rest 12 along the Z axle, is promptly radially realized Differential Control along the processed pipe road on the cutterhead 2 under the driving of knife rest motor; And realize X, the accurate poor benefit control of Z axle, reach the processing request of specifying pipeline end face slope type.
In the use; Workpiece to be processed (like pipeline) is fixed on the opposite (clamping mechanism does not indicate in the drawings) of cutterhead 2; Knife rest and feed system thereof (leading screw) are fixed on the main shaft disk, control knife rest to the pipeline radial feed through clutch, cutterhead rotating speed and knife rest motor speed difference.According to above-mentioned frame for movement; Utilize the Differential Control principle; Realization is the key of fixed pipeline numerical control end surface beveller development, because knife rest 12 feed systems (Z axle) are installed on the main shaft cutterhead 2 to the accurate feeding control of feed shaft; Its motion is except the feed motion of response driven by servomotor; Rotatablely move along with what the main shaft cutterhead rotated together in addition, so the accurate feeding control of Z axle and the speed of mainshaft, servomotor rotating speed are closely related, also closely related with the direction of rotation (rotating and reverse) of 2 motors simultaneously.
Because being used to drive the spindle motor of cutterhead 2 is threephase asynchronous machines, the knife rest motor is a servomotor, and there is certain deviation in the spindle motor rotating speed; Can't accurately control, cause Z axle feeding control accuracy not enough, can't satisfy processing request; Therefore adopt spindle encoder, the actual speed of main shaft is gathered, feed back to digital control system in real time; Through the response time of modification and Adjustment System; Adjust the rotating speed of Z axle servomotor in real time, the speed discrepancy between servomotor and the spindle motor can accurately be controlled, thereby reaches the accurate feeding of Z axle.
The control mode of in digital control system, revising rotating speed promptly whenever turns around according to main shaft and controls the amount of feeding of Z axle for revolution feeding control, just adjusts the rotating speed of Z axle servomotor, and the relation of the rotating speed of Z axle servomotor and the speed of mainshaft and the Z axle amount of feeding is:
F Z=(N Z-N Main) * f Z* η
Wherein: Nz is a Z axle servomotor rotating speed
N MainBe spindle motor rotating speed (positive rotary speed)
Fz is Z axial filament thick stick 5 pitch
η compares correction factor for the Z shaft gear
Fz is the Z axle amount of feeding (the knife rest amount of feeding)
Speed of mainshaft feedback through spindle encoder, the amount of feeding that digital control system is confirmed according to programming is simultaneously adjusted the rotating speed of Z axle servomotor in real time, and is therefore higher to the response speed and the frequency requirement of system and Z axle servomotor, needs the support of hardware.
In order to simplify the complexity of Z axle feeding control, the rotating speed and the direction of rotation of restriction main shaft, when the rotating speed of Z axle servomotor was identical with the speed of mainshaft, the Z axle amount of feeding was 0, knife rest and pipeline outer wall are apart from remaining unchanged; When the rotating speed of Z axle servomotor greater than the speed of mainshaft, then the Z axle amount of feeding is for just, knife rest will move away from pipeline center; When the rotating speed of Z axle servomotor less than the speed of mainshaft, then the Z axle amount of feeding is for negative, knife rest will move to pipeline center.Mend motion if differ from simultaneously with the X axle this moment, just can realize complicated pipeline end face groove processing, comprise the control that the circular arc difference is mended.
Also have, because when system's startup perhaps finishes, because the acceleration and deceleration characteristic of servomotor and spindle motor; Cause the amount of feeding of Z-direction that certain error is arranged, this error can add up along with the quantity of the speed of mainshaft and pipeline processing, be added to a certain degree after; Can not satisfy the required precision of processing; Therefore revise in the time of need beginning and finish Z axle amount of feeding program, in the scope of required precision, so the correction of the Z axle amount of feeding concerns as follows with ERROR CONTROL:
F Z=(N Z-N Main) * f Z* η * β
Wherein: Nz is a Z axle servomotor rotating speed
N MainBe spindle motor rotating speed (positive rotary speed)
Fz is a Z axial filament thick stick pitch
η compares correction factor for the Z shaft gear
β is the acceleration and deceleration correction factor, confirms according to the frame for movement and the parameter of electric machine
Fz is the Z axle amount of feeding (the knife rest amount of feeding)
In addition, the particularity of fixed pipeline numerical control end surface beveller converted products, pipeline radius and wall thickness change, and adopt the relative quantity programming Control, the structure of can simplifying procedures greatly, the scope of application of the unified numerical control program of raising.
At last; Through to influencing the mechanical precision of machining accuracy, compensate in numerical control program like the anti-phase gap of leading screw etc., make program can repeated multiple times circular flow after; Precision can satisfy processing request; Simultaneously program and human-computer interaction interface are optimized, make simple to operateization, program modularity, generalization, reduce operator's operation easier and requirement.
The present invention utilizes Differential Control theoretical; Detect the rotating speed of main shaft in real time, control said knife rest rotating speed of motor, can accurately control the amount of feeding of Z axle knife rest; Realization realizes the function that manual beveling machine can't be realized to the full-automatic processing of complex face grooves such as " U " type, two " V " type.
More than fixed pipeline numerical control end surface beveller provided by the present invention has been carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (8)

1. fixed pipeline numerical control end surface beveller; Comprise rack rail and be arranged on the main frame on the said rack rail, said main frame is provided with cutterhead, and said cutterhead is the center rotation with the main shaft of main frame; It is characterized in that: said cutterhead is provided with along the radially hard-wired track of cutterhead; Knife rest along said track translation is installed on the said guide rail, and said knife rest, cutterhead pass through transmission mechanism and motor-driven separately respectively, also comprise a control module; Said control module detects the rotating speed of cutterhead in real time, controls said knife rest rotating speed of motor.
2. fixed pipeline numerical control end surface beveller according to claim 1; It is characterized in that: said control module comprises rotation speed detection unit and spindle encoder; Said rotation speed detection unit sends to encoder with detected cutterhead tach signal, adjusts the knife rest rotating speed of motor in real time through encoder.
3. fixed pipeline numerical control end surface beveller according to claim 1 and 2; It is characterized in that: the output transmission of said knife rest motor has the power transmission shaft of bevel gear for a front end; The bevel gear that said bevel gear and another are arranged on the leading screw meshes in pairs, and said knife rest is meshed with said leading screw as track.
4. fixed pipeline numerical control end surface beveller according to claim 3 is characterized in that: the output of said knife rest motor also is provided with a reductor, gives said power transmission shaft through said reductor transmission.
5. fixed pipeline numerical control end surface beveller according to claim 3 is characterized in that: also be provided with clutch between said power transmission shaft and the said knife rest motor.
6. fixed pipeline numerical control end surface beveller according to claim 3 is characterized in that: the rotating ratio of said two bevel gears is a positive integer.
7. fixed pipeline numerical control end surface beveller according to claim 2 is characterized in that: the relation of said knife rest rotating speed of motor and cutterhead rotating speed and radial feeds is:
F Z=(N Z-N Main) * f Z* η
Wherein: Nz is the knife rest motor speed;
N MainBe the cutterhead rotating speed;
Fz is leading screw (a 5) pitch;
η is that gear compares correction factor;
Fz is the knife rest amount of feeding.
8. fixed pipeline numerical control end surface beveller according to claim 2 is characterized in that: when starting or finishing, the relation of said knife rest rotating speed of motor and cutterhead rotating speed and the knife rest amount of feeding is:
F Z=(N Z-N Main) * f Z* η * β
Wherein: Nz is the knife rest motor speed;
N MainBe the cutterhead rotating speed;
Fz is a leading screw pitch;
η is that gear compares correction factor;
β is the acceleration and deceleration correction factor, confirms according to the frame for movement and the parameter of electric machine;
Fz is the knife rest amount of feeding.
CN2009100489568A 2009-04-08 2009-04-08 Fixed pipeline numerical control end surface beveller Active CN101513696B (en)

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Application Number Priority Date Filing Date Title
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102114562A (en) * 2009-12-30 2011-07-06 哈尔滨华崴焊切股份有限公司 Waste edge cutting device
CN102328096B (en) * 2011-09-14 2013-02-27 王俊贤 Steel tube end surface machining device for flexible leg of large portal crane
CN104759697B (en) * 2014-01-08 2017-09-19 上海油威液压成套设备有限公司 Portable pipe beveling machine

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN2359030Y (en) * 1999-01-12 2000-01-19 廖文斌 Portable pipe electric bevelling machine
CN2475494Y (en) * 2001-05-24 2002-02-06 保定市华沃机械有限公司 Portable pipeline grooving machine
CN201161349Y (en) * 2008-01-03 2008-12-10 上海前山管道技术有限公司 Equipment for cutting divided edge on steel tube
CN201161340Y (en) * 2008-03-06 2008-12-10 武汉市高雄科技发展有限责任公司 Desk type automatic chamfering machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2359030Y (en) * 1999-01-12 2000-01-19 廖文斌 Portable pipe electric bevelling machine
CN2475494Y (en) * 2001-05-24 2002-02-06 保定市华沃机械有限公司 Portable pipeline grooving machine
CN201161349Y (en) * 2008-01-03 2008-12-10 上海前山管道技术有限公司 Equipment for cutting divided edge on steel tube
CN201161340Y (en) * 2008-03-06 2008-12-10 武汉市高雄科技发展有限责任公司 Desk type automatic chamfering machine

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