CN101870015B - Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof - Google Patents
Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof Download PDFInfo
- Publication number
- CN101870015B CN101870015B CN2010101954786A CN201010195478A CN101870015B CN 101870015 B CN101870015 B CN 101870015B CN 2010101954786 A CN2010101954786 A CN 2010101954786A CN 201010195478 A CN201010195478 A CN 201010195478A CN 101870015 B CN101870015 B CN 101870015B
- Authority
- CN
- China
- Prior art keywords
- feed
- main
- radial
- radial feed
- main shaft
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a motion synthesizer of a numerical controlled tube threading lathe and a calculating method thereof. The motion synthesizer of a radial feed numerical controlled tube threading lathe with a single servo is mainly characterized by comprising a main motor arranged at the outer side of a main spindle box of the lathe, wherein the output shaft of the main motor is engaged with a main transmission rack wheel through an output gear of a transmission device; the main transmission rack wheel is fixedly connected with main shaft; a fancing head is connected fixedly at the end of the main shaft. A radial feed transmission shaft is arranged in an inner hole of the main shaft and in the same axis with the main shaft. The rear end is provided with a feed servo motor, and the end is fixedly connected with the driving bevel gear and engaged with the driven bevel gear; the driven bevel gear is fixedly connected with a radial feed screw which is connected fixedly with the fancing head; a sliding plate is fixedly connected with a nut which is matched with the radial feed screw and is provided with a radial knife rest; and a spiral encoder is connected with the main shaft through a synchronized tooth belt mechanism. The invention has the advantages of replacing the differential mechanism of the mechanic structure with an electronic transmission chain and software, thereby simplifying the mechanic structure and the feed transmission chain and improving the transmission precision.
Description
Technical field:
The present invention relates to a kind of motion synthesizer and computational methods thereof of numerical control pipe thread lathe.
Background technology:
Pipe threading machine is a kind of lathe of special processing tube screw thread, at present, generally selects the special pipes lathe of workpiece self rotation; When pipe processing bore big (Φ 100～Φ 340mm) and long (5000～10000mm) time; Have some difficulties: as long owing to pipe, quality is big, and clamping is difficulty relatively; Main shaft drives such pipe and rotates; Not only producing vibration and noise greatly, and influence machining accuracy and surface quality, is very difficult so improve the precision and the production efficiency of lathe.For this reason, domestic existing lathe enterprise develops pipe and does not rotate, the Digit Control Machine Tool that is used to process heavy caliber pipe screw thread of cutter rotation, and still, this lathe of having reported all adopts the frame for movement differential attachment to realize that motion is synthetic.But, increased driving error because the existence of frame for movement differential attachment causes mechanism complicated.
Summary of the invention:
The objective of the invention is to avoid the deficiency of prior art, a kind of synthetic device and computational methods thereof of motion of servo radial feeding numerical control pipe thread lathe are provided.Provide a kind of workpiece motionless to the defective of prior art, cutter rotation, and high efficiency pipe threading machine with radial feed function, cutter can realize when doing gyration that radial feed moves.Utilize the electronics driving-chain to replace mechanical drive train to realize that cutter motion of radial feed simultaneously in rotation is synthetic.
For realizing above-mentioned purpose; The technical scheme that the present invention takes is: a kind of motion synthesizer of radial feed numerical controlled tube threading lathe with single servo; Its main feature is to include to be provided with main motor (1) in the outside of lathe headstock; The output shaft of main motor (1) is through the output gear and main transmission gear wheel (6) engagement of speed change gear, and main transmission gear wheel (6) is connected with main shaft (7), and the end of main shaft (7) is fixed with facing head (13); Radial feed power transmission shaft (4) is located in the endoporus of main shaft (7); With main shaft (7) be same axis; Its afterbody is provided with feed servo motor (2); Its end and drive bevel gear (9) are connected and mesh with driven wheel of differential (12): driven wheel of differential (12) is fixed on radial feed screw (8), and radial feed screw (8) is connected with facing head (13); Slide plate (10) be fixed on radial feed screw (8) nut engaged (14) on, slide plate (10) is provided with radial tool post (11); Rotary encoder (3) is connected with main shaft (7) through synchronous cog belt mechanism (15).
The motion synthesizer of described radial feed numerical controlled tube threading lathe with single servo; Also include numerical control device; Described numerical control device includes man-machine interface (101) and two-way connection of digital control system (102); The interface of digital control system (102) connects main motor (103), radial feed motor (104) and axial feed motor (115); The output of main motor (103) connects motion synthetic (108) through connecting main transmission chain (105), and the output of radial feed motor (104) connects motion combination mechanism (108) through connecting radial feed driving-chain (106); Axial feed motor (115) output is through connecting axial feed driving-chain (114) connecting axle to feed screw (113), and axial feed leading screw (113) connects main spindle box slide plate (112) and is connected with knife rest (111); Rotary encoder (107) is connected the end of main transmission chain (105), and the value of angular displacement of main shaft is transferred to digital control system (102); The displacement of main spindle box slide plate (112) is given digital control system (102) through position sensor (117) with feedback information; Motion combination mechanism (108) connects knife rest (111) through bevel gear (109), radial feed screw (110); Position-detection sensor (116) detects the positional precision of knife rest (111) and is transferred to digital control system (102).
The computational methods that a kind of motion of radial feed numerical controlled tube threading lathe with single servo is synthetic, its main feature is: the rotation speed n of radial feed servomotor
ActualRotating speed by with facing head keeps synchronous servomotor rotation speed n
BasicallyWith with the facing head rotating speed be the servomotor rotation speed n that realizes radial feed under zero the situation
WorkForm:
n
Actual=n
Basically+ n
Work
Wherein:
n
Actual---the actual speed of feed servo motor;
n
Basically---during the facing head rotation, the rotating speed of radial feed servomotor when sliding carriage keeps not radially moving, n
Basically=n
Main shaft
n
Work---facing head rotates to be the rotating speed that zero situation lower skateboard is realized the radial feed servomotor of radial feed,
Wherein: s---the cutter radial amount of feeding mm/ main shaft revolution of main shaft revolution;
T---radial feed screw pitch mm;
i
Feeding---the speed reducing ratio of radial feed driving-chain.
Described pipe lathe with motion synthesizer of radial feed numerical controlled tube threading lathe with single servo, its technological core are to utilize the electronics driving-chain to replace mechanical drive train, utilize software to realize that motion is synthetic.The radial feed servomotor is through radial feed power transmission shaft, Bevel Gear Transmission and feed screw nut transmission, rotatablely moving of motor is converted into move radially slide plate and move along the radial feed of facing head.The rear side of described lathe headstock is provided with the radial feed servomotor; The radial feed servomotor is through radial feed axle 4, and bevel gear pair 9,12 drives radial feed screw 8 rotations; Thereby the slide plate 10 that moves radially that drives in the facing head 13 moves; Knife rest 11 is installed on the slide plate 10, and cutter is realized the radial feed motion, and its main motion is provided by rotatablely moving of facing head.
Beneficial effect of the present invention: with the differential attachment of electronics driving-chain and software replacement frame for movement.Simplify frame for movement, simplified the feeding driving-chain, thereby also improved transmission accuracy.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the synthetic control flow chart of motion of realizing the cutter radial feed motion.
Fig. 3 is the synthetic computing block diagram of inline driving-chain motion of realizing the cutter radial feed motion.
The specific embodiment:
Below principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
Embodiment 1: see Fig. 1; A kind of motion synthesizer of radial feed numerical controlled tube threading lathe with single servo; Be provided with main motor 1 in the outside of lathe headstock; The output shaft of main motor 1 is through the output gear and 6 engagements of main transmission gear wheel of speed change gear, and main transmission gear wheel 6 is connected with main shaft 7, and the end of main shaft 7 is fixed with facing head 13; Radial feed power transmission shaft 4 is located in the endoporus of main shaft 7; With main shaft 7 be same axis; Its afterbody is provided with feed servo motor 2; Its end and drive bevel gear 9 are connected and mesh with driven wheel of differential 12: driven wheel of differential 12 is fixed on radial feed screw 8, and radial feed screw 8 is connected with facing head 13; Slide plate 10 be fixed on radial feed screw 8 nut engaged 14 on, slide plate 10 is provided with radial tool post 11; Rotary encoder 3 is connected with main shaft 7 through synchronous cog belt mechanism 15.
The outside of the lathe headstock described in the figure is provided with a main motor 1, feeding motor 2.Main motor through belt pulley transmission of power to main transmission gear wheel 6, main transmission gear wheel 6 and main shaft 7 are connected and fixed through key.Feed servo motor 2 is installed in the afterbody of main spindle box 5, and its axis is coaxial with main-shaft axis.Therefore, when main transmission gear wheel 6 rotation, will drive main shaft 7 rotations of taking exercises, facing head 13 also synchronously rotates with main shaft 7 at this moment.Radial feed power transmission shaft 4 is installed in the hollow space of main shaft 7 by bearing, with main shaft be that the sky nested structure is installed (that is, main shaft and radial feed power transmission shaft independent rotation) separately.
The afterbody of machine tool chief axis rotates through synchronous cog belt mechanism driven rotary encoder 3, and rotary encoder 3 rotates the rotation situation that in time detects main shaft 7, and gives digital control system this transfer of data.When main shaft 7 rotated, if radial feed servomotor 2 does not rotate, radial feed power transmission shaft 4 can not rotate yet, but was mounted in can be rotated by dynamic bevel gear 12 in the facing head 13, and radial feed screw 8 can rotate, and can radially move just move radially slide plate 10.In the lathe that adopts frame for movement, address this problem by the frame for movement differential attachment; Rotary encoder among the present invention in time detects the data that main shaft rotates; After digital control system reads these data; According to the drive connection of feeding driving-chain, with the data that software sends basic rotary speed for the feeding servomotor, the base speed of this radial feed servomotor moves radially slide plate when guaranteeing main axis rotation can not do radial motion in facing head.When moving radially slide plate and need radially move, digital control system sends the feed speed data for the radial feed servomotor, through software the base speed data and the work feed speed data of radial feed servomotor is synthesized actual speed.Realized that through above technology and this group software motion is synthetic, replaced the differential attachment of frame for movement.
The main spindle box slide plate can be accomplished the processing of common rib-loop under the control of digital control system, this is the basic fundamental that all Digit Control Machine Tools all possess.The present invention makes cutter when main axis rotation, main shaft axially move, possesses the function that moves radially, thereby makes lathe possess the function of processing taper pipe thread, section, grooving.
Embodiment 2: see Fig. 2; The motion synthesizer of described radial feed numerical controlled tube threading lathe with single servo; Also include numerical control device; Described numerical control device includes man- machine interface 101 and 102 two-way connections of digital control system; The interface of digital control system 102 connects main motor 103, radial feed motor 104 and axial feed motor 115, and to connect motion synthetic 108 through connecting main transmission chain 105 for the output of main motor 103, and the output of radial feed motor 104 connects motion combination mechanisms 108 through connecting radial feed driving-chain 106; Axial feed motor 115 outputs are through connecting axial feed driving-chain 114 connecting axles to feed screw 113, and axial feed leading screw 113 connects main spindle box slide plate 112 and is connected with knife rest 111; Rotary encoder 107 is connected the end of main transmission chain 105, and the value of angular displacement of main shaft is transferred to digital control system 102; The displacement of main spindle box slide plate 112 is given digital control system 102 through position sensor 117 with feedback information; Motion combination mechanism 108 connects knife rest 111 through bevel gear 109, radial feed screw 110; Position-detection sensor 116 detects the positional precision of knife rest 111 and is transferred to digital control system 102.
Embodiment 3: see Fig. 3, and the computational methods that a kind of motion of single servo feed numerical control pipe thread lathe is synthetic, its main feature is:
Because the radial feed slide plate is under the situation of facing head rotation, does along the radial feed of facing head and moves.So rotation speed n of radial feed servomotor
ActualBe made up of two parts, promptly the rotating speed with facing head keeps synchronous servomotor rotation speed n
Basically, with the facing head rotating speed be the servomotor rotation speed n that realizes radial feed under zero the situation
Work
n
Actual=n
Basically+ n
Work
Wherein:
n
Actual---the actual speed of feed servo motor;
n
Basically---during the facing head rotation, the rotating speed of radial feed servomotor when sliding carriage keeps not radially moving.n
Basically=n
Main shaft
n
Work---facing head rotates to be the rotating speed that zero situation lower skateboard is realized the radial feed servomotor of radial feed.
(i in this example
Feeding=1: 1, i.e. the gearratio of bevel gear pair)
Wherein: s---cutter radial amount of feeding mm/ main shaft revolution;
T---radial feed screw pitch mm;
i
Feeding---the speed reducing ratio of radial feed driving-chain;
Application examples: the instance of gas thread feeding
This instance is that example is set forth machining screw feeding principle with processing sealed tube screw thread GB7306-87 type, and the tapering of this gas thread is 1: 16, and promptly gradient is 1: 32.
n
Actual=n
Basically+ n
Work
Wherein:
n
Actual---the actual speed of feed servo motor;
n
Basically---during the facing head rotation, the rotating speed of radial feed servomotor when sliding carriage keeps not radially moving.n
Basically=n
Main shaft=100 rev/mins (is example with the intermediate speed)
n
Work---facing head rotates to be the rotating speed that zero situation lower skateboard is realized the radial feed servomotor of radial feed.
Wherein: s---cutter radial amount of feeding mm/ main shaft revolution;
T---radial feed screw pitch mm;
i
Feeding---the speed reducing ratio of radial feed driving-chain.(i in this example
Feeding=1: 1, i.e. the gearratio of bevel gear pair);
Look into " mechanical design handbook ", bore is that the pitch of the control screw thread of 6 inches (152.4mm) is 2.309, and per inch tooth number is 11.Therefore, can know by the definition of tapering and gradient:
Can get: S=0.0721563
The helical pitch that t is ball-screw is 5mm;
So
n
Actual=n
Basically+ n
Work=100+1.443126=101.443126 rev/min
So knowing the real work rotating speed is 101.443126 rev/mins, the rotating speed that is to say the radial feed servomotor will remain on the radial feeds of 101.443126 rev/mins of cutters just can realize processing taper pipe thread accurately the time.
Do the technology that feed motion realizes screw thread processing as for cutter along the machine tool chief axis axis direction, all thread chasing machines all possess, and do not give unnecessary details in the present invention.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the motion synthesizer of a radial feed numerical controlled tube threading lathe with single servo; It is characterized in that including and be provided with main motor in the outside of lathe headstock; The output shaft of main motor is through the output gear and the engagement of main transmission gear wheel of speed change gear; Main transmission gear wheel and main shaft are connected, and the end of main shaft is fixed with facing head; The radial feed power transmission shaft is located in the endoporus of main shaft, with main shaft be same axis, its afterbody is provided with the feed servo motor, its end and drive bevel gear are connected and mesh with driven wheel of differential; Driven wheel of differential is fixed on radial feed screw, and radial feed screw and facing head are connected; Slide plate be fixed on the radial feed screw nut engaged on, slide plate is provided with radial tool post; Rotary encoder is connected with main shaft through synchronous cog belt mechanism; Also include numerical control device; Described numerical control device includes man-machine interface and is connected with digital control system is two-way; The interface of digital control system connects described main motor, feed servo motor and axial feed motor; The output of said main motor connects the motion combination mechanism through connecting the main transmission chain, and the output of feed servo motor connects the motion combination mechanism through connecting the radial feed driving-chain; The axial feed motor output end is through connecting axial feed driving-chain connecting axle to feed screw, and the axial feed leading screw is connected with radial tool post through the main spindle box slide plate; Rotary encoder is connected the end of main transmission chain, and the value of angular displacement of main shaft is transferred to digital control system; The displacement of main spindle box slide plate is given digital control system through position sensor with feedback information; The motion combination mechanism connects radial tool post through bevel gear, radial feed screw; Position-detection sensor detects the positional precision of radial tool post and is transferred to digital control system.
2. the synthetic computational methods of the motion of the motion synthesizer of the described radial feed numerical controlled tube threading lathe with single servo of claim 1 is characterized by: feed servo rotating speed of motor n
ActualRotating speed by with facing head keeps synchronous feed servo motor speed n
BasicallyWith with the facing head rotating speed be the feed servo motor speed n that realizes radial feed under zero the situation
WorkForm:
n
Actual=n
Basically+ n
Work
Wherein:
n
Actual--the actual speed of feed servo motor;
n
Basically--during the facing head rotation, feeding when sliding carriage keeps not radially moving
The rotating speed of servomotor, n
Basically=n
Main shaft
n
Work--facing head rotates to be the feed servo rotating speed of motor that zero situation lower skateboard is realized radial feed,
Wherein: the cutter radial amount of feeding mm of s--main shaft revolution;
T--radial feed screw pitch mm;
i
Feeding--the speed reducing ratio of radial feed driving-chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101954786A CN101870015B (en) | 2010-06-08 | 2010-06-08 | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101954786A CN101870015B (en) | 2010-06-08 | 2010-06-08 | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101870015A CN101870015A (en) | 2010-10-27 |
| CN101870015B true CN101870015B (en) | 2012-11-28 |
Family
ID=42995201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101954786A Expired - Fee Related CN101870015B (en) | 2010-06-08 | 2010-06-08 | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101870015B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646689A (en) * | 2015-02-06 | 2015-05-27 | 安阳工学院 | Double-sided lathe special for valve |
| CN108381264A (en) * | 2018-05-08 | 2018-08-10 | 莱芜市万金机械有限公司 | A kind of high-precision double end facing head |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808893A (en) * | 1993-07-28 | 1998-09-15 | Amt Machine Systems, Ltd. | System for adapting an automatic screw machine to achieve computer numeric control |
| CN101518879A (en) * | 2008-09-10 | 2009-09-02 | 兰州理工大学 | Machine tool radial feed system |
| CN201702478U (en) * | 2010-06-08 | 2011-01-12 | 兰州机床厂 | Kinematics synthesis device of single-way servo radial feed NC pipe threading machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009028855A (en) * | 2007-07-27 | 2009-02-12 | Mitsui Seiki Kogyo Co Ltd | Screw groove machining method for machining screw groove of member by rotatively moving cutting tool by nc machine |
-
2010
- 2010-06-08 CN CN2010101954786A patent/CN101870015B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5808893A (en) * | 1993-07-28 | 1998-09-15 | Amt Machine Systems, Ltd. | System for adapting an automatic screw machine to achieve computer numeric control |
| CN101518879A (en) * | 2008-09-10 | 2009-09-02 | 兰州理工大学 | Machine tool radial feed system |
| CN201702478U (en) * | 2010-06-08 | 2011-01-12 | 兰州机床厂 | Kinematics synthesis device of single-way servo radial feed NC pipe threading machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-28855A 2009.02.12 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101870015A (en) | 2010-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101870011B (en) | Numerical control pipe lathe | |
| CN101786180B (en) | Helical milling device and method | |
| CN201702478U (en) | Kinematics synthesis device of single-way servo radial feed NC pipe threading machine | |
| CN202985090U (en) | Turning and drilling compound machine tool | |
| CN103121168A (en) | Numerical-control large-scale precise dual-drive gap removing rotating working table | |
| CN101870013B (en) | Numerical control facing head system capable of realizing respective radial feed of multiple cutters | |
| CN103658869A (en) | High-accuracy gear milling machine for gear and rack | |
| CN201625871U (en) | Lead screw-nut transmission device for translating machine tool table | |
| CN203636106U (en) | High-precision gear and rack tooth milling machine | |
| CN101870015B (en) | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof | |
| CN201693259U (en) | Numerical control pipe lathe | |
| CN100506478C (en) | Four-shaft numerically controlled ellipsoidal and spherical hobbing cutter spade milling machine tool | |
| CN102581386A (en) | Face gear grinding machining method based on cylindrical gear worm gear-grinding machine tool | |
| CN202045366U (en) | Numerical control flat-turning lathe | |
| CN201776533U (en) | Multi-cutter numerical-controlled pipe lathe | |
| CN202591752U (en) | Numerical control hobbing machine | |
| CN101870014B (en) | Multipath servo radial feeding kinematic synthesis device of numerical control pipe threading machine and calculating method thereof | |
| CN201792058U (en) | Kinematic synthesis device of multichannel servo radial feed numerical-control pipe threading machine | |
| CN201744756U (en) | Numerical control fancing head system for multi-cutter radial feed | |
| CN202240439U (en) | Multifunctional machine tool | |
| CN102172789B (en) | Machine tool for processing screw of compressor and star wheel | |
| CN101862869B (en) | Radial transmission system for numerical control pipe thread lathe | |
| CN102922025B (en) | Power cutter frame device capable of being lifted | |
| CN201960157U (en) | Porous simultaneous drilling device for steering column connecting plate of motorcycle | |
| CN202356870U (en) | Numerically-controlled large-scale precision dual-drive clearance-eliminating rotary table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 730070 No. 888 Anning West Road, Anning District, Gansu, Lanzhou Applicant after: Lanzhou Machine Tool Plant Address before: 730070 No. 888 Anning West Road, Anning District, Gansu, Lanzhou Applicant before: Lanzhou Machine Tool Plant |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: LANZHOU MACHINE TOOL CO., LTD. TO: LANZHOU SPARK CNC MACHINE TOOL CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20150608 |
|
| EXPY | Termination of patent right or utility model |