CN201702478U - Kinematics synthesis device of single-way servo radial feed NC pipe threading machine - Google Patents
Kinematics synthesis device of single-way servo radial feed NC pipe threading machine Download PDFInfo
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- CN201702478U CN201702478U CN2010202195872U CN201020219587U CN201702478U CN 201702478 U CN201702478 U CN 201702478U CN 2010202195872 U CN2010202195872 U CN 2010202195872U CN 201020219587 U CN201020219587 U CN 201020219587U CN 201702478 U CN201702478 U CN 201702478U
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Abstract
The utility model relates to a kinematics synthesis device of a NC pipe threading machine, in particular to a kinematics synthesis device of a single-way servo radial feed NC pipe threading machine which is mainly characterized in that a main motor is arranged at the outside of the spindle box of the machine; the output shaft of the main motor is engaged with a main transmission rack wheel through the output gear of a variable-speed gear; the main transmission rack wheel is fixedly connected with a spindle; the end part of the spindle is fixedly connected with a fancing head; a radical feed transmission shaft is arranged in the inner hole of the spindle, and shares the same axis with the spindle; the tail part of the radical feed transmission shaft is provided with a servo motor; the end part of the radical feed transmission shaft is fixedly connected with a drive conical gear and is engaged with a driven conical gear; the driven conical gear is fixedly connected with a radical feed screw; the radical feed screw is fixedly connected with the fancing head; a slide carriage is fixedly connected with a nut matched with the radical feed screw; a radical knife rest is arranged on the slide carriage; and a rotary coder is connected with the spindle through a synchronous cog belt structure. The kinematics synthesis device of the single-way servo radial feed NC pipe threading machine has the advantages of using an electric transmission chain and software to replace the differential mechanism of a mechanical structure, which simplifies the mechanical structure and a feed transmission chain, thereby improving the transmission precision as well.
Description
Technical field:
The utility model relates to a kind of motion synthesizer of numerical control pipe thread lathe.
Background technology:
Pipe threading machine is a kind of lathe of special processing tube screw thread, at present, the general special pipes lathe of selecting workpiece self rotation, when pipe processing bore big (Φ 100～Φ 340mm) and long (5000～10000mm) time, have some difficulties: as since pipe long, quality is big, clamping is difficulty relatively, main shaft drives such pipe and rotates, not only produce vibration and noise greatly, and influence machining accuracy and surface quality, be 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's complexity.
The utility model content:
The purpose of this utility model is to avoid the deficiencies in the prior art, and a kind of synthetic device of motion of servo radial feeding numerical control pipe thread lathe is provided.Provide a kind of workpiece motionless at 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 achieving the above object, the technical scheme that the utility model is taked 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 by the output gear and main transmission gear wheel (6) engagement of speed change gear, 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) by 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) by connecting main transmission chain (105), and the output of radial feed motor (104) connects motion combination mechanism (108) by connecting radial feed driving-chain (106); Axial feed motor (115) output is by 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) by position sensor (117) with feedback information; Motion combination mechanism (108) connects knife rest (111) by 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).
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 by 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 by radial feed axle 4, bevel gear pair 9,12, drive 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.
The beneficial effects of the utility model: 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 utility model.
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 utility model and feature are described, institute gives an actual example and only is used to explain the utility model, is not to be used to limit scope of the present utility model.
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 by the output gear and 6 engagements of main transmission gear wheel of speed change gear, 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 by 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 by belt pulley transmission of power to main transmission gear wheel 6, main transmission gear wheel 6 and main shaft 7 are connected and fixed by 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, will drive main shaft 7 rotations of taking exercises when main transmission gear wheel 6 rotation, 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 by 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 in the utility model in time detects the data that main shaft rotates, after digital control system reads these data, drive connection according to the 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, by software the base speed data and the work feed speed data of radial feed servomotor is synthesized actual speed.Realized that by 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 finished 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 utility model 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, the output of main motor 103 synthesizes 108 by connecting the 105 connection motions of main transmission chain, and the output of radial feed motor 104 is by connecting radial feed driving-chain 106 connection motion combination mechanisms 108; Axial feed motor 115 outputs are by 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 by position sensor 117 with feedback information; Motion combination mechanism 108 connects knife rest 111 by 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.
During use, what the motion of single servo feed numerical control pipe thread lathe was synthetic is calculated as
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
Substantially, with the facing head rotating speed be the servomotor rotation speed n that realizes radial feed under zero the situation
Work
n
Actual=n
Substantially+ n
Work
Wherein:
n
Actual---the actual speed of feed servo motor;
n
Substantially---during the facing head rotation, the rotating speed of radial feed servomotor when sliding carriage keeps not radially moving.n
Substantially=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 example of gas thread feeding
This example 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
Substantially+ n
Work
Wherein:
n
Actual---the actual speed of feed servo motor;
n
Substantially---during the facing head rotation, the rotating speed of radial feed servomotor when sliding carriage keeps not radially moving.n
Substantially=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, by the definition of tapering and gradient as can be known:
Can get: S=0.0721563
The helical pitch that t is ball-screw is 5mm;
So
n
Actual=n
Substantially+ 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 utility model.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
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 (1) in the outside of lathe headstock, the output shaft of main motor (1) is by the output gear and main transmission gear wheel (6) engagement of speed change gear, 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) by synchronous cog belt mechanism (15).
2. the motion synthesizer of radial feed numerical controlled tube threading lathe with single servo as claimed in claim 1, it is characterized in that also including 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) by connecting main transmission chain (105), and the output of radial feed motor (104) connects motion combination mechanism (108) by connecting radial feed driving-chain (106); Axial feed motor (115) output is by 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) by position sensor (117) with feedback information; Motion combination mechanism (108) connects knife rest (111) by 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).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202195872U CN201702478U (en) | 2010-06-08 | 2010-06-08 | Kinematics synthesis device of single-way servo radial feed NC pipe threading machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202195872U CN201702478U (en) | 2010-06-08 | 2010-06-08 | Kinematics synthesis device of single-way servo radial feed NC pipe threading machine |
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| CN201702478U true CN201702478U (en) | 2011-01-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870015A (en) * | 2010-06-08 | 2010-10-27 | 兰州机床厂 | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof |
| CN102730570A (en) * | 2012-06-27 | 2012-10-17 | 抚顺市特种设备监督检验所 | Comprehensive protector for crane |
| CN107363294A (en) * | 2017-07-18 | 2017-11-21 | 山东威达重工股份有限公司 | A kind of inner driving system is from boring tapered hole apparatus |
| 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 |
| US11077509B2 (en) | 2018-03-16 | 2021-08-03 | Milwaukee Electric Tool Corporation | Pipe threader |
-
2010
- 2010-06-08 CN CN2010202195872U patent/CN201702478U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870015A (en) * | 2010-06-08 | 2010-10-27 | 兰州机床厂 | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof |
| CN101870015B (en) * | 2010-06-08 | 2012-11-28 | 兰州星火机床有限公司 | Motion synthesizer of radial feed numerical controlled tube threading lathe with single servo and calculating method thereof |
| CN102730570A (en) * | 2012-06-27 | 2012-10-17 | 抚顺市特种设备监督检验所 | Comprehensive protector for crane |
| CN102730570B (en) * | 2012-06-27 | 2015-04-08 | 抚顺市特种设备监督检验所 | Comprehensive protector for crane |
| CN107363294A (en) * | 2017-07-18 | 2017-11-21 | 山东威达重工股份有限公司 | A kind of inner driving system is from boring tapered hole apparatus |
| CN107363294B (en) * | 2017-07-18 | 2023-06-02 | 山东威达重工股份有限公司 | A self-boring taper hole device for internal transmission chain |
| US11077509B2 (en) | 2018-03-16 | 2021-08-03 | Milwaukee Electric Tool Corporation | Pipe threader |
| US12220756B2 (en) | 2018-03-16 | 2025-02-11 | Milwaukee Electric Tool Corporation | Pipe threader |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LANZHOU SPARK MACHINE TOOL CO., LTD. Free format text: FORMER OWNER: LANZHOU MACHINE TOOL FACTORY Effective date: 20120705 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120705 Address after: 730070 No. 888 Anning West Road, Anning District, Gansu, Lanzhou Patentee after: Lanzhou Machine Tool Plant Address before: 730070 No. 888 Anning West Road, Anning District, Gansu, Lanzhou Patentee before: Lanzhou Machine Tool Plant |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110112 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |