CN201792058U - Kinematic synthesis device of multichannel servo radial feed numerical-control pipe threading machine - Google Patents
Kinematic synthesis device of multichannel servo radial feed numerical-control pipe threading machine Download PDFInfo
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- CN201792058U CN201792058U CN2010202193792U CN201020219379U CN201792058U CN 201792058 U CN201792058 U CN 201792058U CN 2010202193792 U CN2010202193792 U CN 2010202193792U CN 201020219379 U CN201020219379 U CN 201020219379U CN 201792058 U CN201792058 U CN 201792058U
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Abstract
The utility model relates to a kinematic synthesis system for radial feed of a numerical-control multi-tool pipe threading machine, in particular to a kinematic synthesis device of a multichannel servo radial feed numerical-control pipe threading machine. The kinematic synthesis device comprises a spindle, and a facing head is arranged at the front end of the spindle. The kinematic synthesis device is mainly characterized in that the spindle is provided with a free duplicate gear set, a radial feed servo motor is arranged at the left end of a radial feed input shaft, a feed input gear arranged at the right end of the radial feed input shaft meshes with an input gear of the empty-sleeve duplicate gear set, an output gear of the empty-sleeve duplicate gear set meshes with a feed output gear, a radial feed output shaft penetrates through main transmission big gear and is further provided with a driving bevel gear of a bevel gear transmission pair, the riving bevel gear meshes with a driven bevel gear of the bevel gear transmission pair, a lead screw of a lead screw nut mechanism is connected with the driven bevel gear of the bevel gear transmission pair, a nut is connected with a sliding plate, and the sliding plate is fixedly connected with a tool apron.
Description
Technical field:
The utility model relates to a kind of motion synthesis system of numerical control multitool pipe threading machine radial feed.
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 because the frame for movement differential attachment uses gear drive, cause mechanism's complexity, increased driving error.Also, make lathe be difficult to realize the version of multichannel radial feed driving-chain, and then just can't realize the working method of respective radial feed of multiple owing to the restriction of mechanical this body structure of differential attachment.
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 multipath servo radial feeding numerical control pipe thread lathe is provided.The utility model utilizes the electronics driving-chain to replace mechanical drive train, utilize software to realize that motion is synthetic, provide a kind of workpiece motionless, the cutter rotation, high efficiency pipe threading machine with respective radial feed of multiple function, cutter can be realized the radial feed motion when doing gyration.
For achieving the above object, the technical scheme that the utility model is taked is: the device that a kind of motion of multipath servo radial feeding numerical control pipe thread lathe is synthetic, include main shaft (12), front end at main shaft (12) is provided with facing head (13), and its main feature includes and be provided with empty cover duplicate gear group (3) on main shaft (12); The left end of radial feed power shaft (1) is provided with the radial feed servomotor, the feeding input gear (2) that right-hand member is provided with and the input gears engaged of empty cover duplicate gear group (3), the output gear of empty cover duplicate gear group (3) and feeding output gear (4-1) engagement, radial feed output shaft (5-1) passes main transmission gear wheel (7), on radial feed output shaft (5-1), also be provided with the drive bevel gear of Bevel Gear Transmission pair (10-1), with being meshed of Bevel Gear Transmission pair (10-1) by dynamic bevel gear; The leading screw of screw-nut body (9-1) is connected by dynamic bevel gear with Bevel Gear Transmission pair (10-1), and nut is connected with slide plate, is fixed with tool rest (11-1) on the slide plate.
The device that the motion of described multipath servo radial feeding numerical control pipe thread lathe is synthetic, also include with output gear (4-1) counterparty of the output gear engagement of sky cover duplicate gear group (3) to 180 degree places, also be provided with output gear (4-2), output gear (4-2) is located on the radial feed output shaft (5-2), and radial feed output shaft (5-2) passes driving gear (7) and also be provided with Bevel Gear Transmission pair (10-2) on radial feed output shaft (5); The leading screw of screw-nut body (9-2) is connected by dynamic bevel gear with Bevel Gear Transmission pair (10-2), and nut is connected with slide plate, is fixed with radially tool rest (11-2) on the slide plate.
The device that the motion of described multipath servo radial feeding numerical control pipe thread lathe is synthetic, also include described empty cover duplicate gear group (3) and be provided with first duplicate gear (3-1), be provided with clutch shaft bearing (3-4) between main shaft (13) and first duplicate gear (3-1) for including main shaft (13); On first duplicate gear (3-1), be provided with second duplicate gear (3-2), be provided with second bearing (3-5) between first duplicate gear (3-1) and second duplicate gear (3-2); On second duplicate gear (3-2), be provided with the 3rd duplicate gear (3-3), be provided with the 3rd bearing (3-6) between second duplicate gear (3-2) and the 3rd duplicate gear (3-3).
The device that the motion of described multipath servo radial feeding numerical control pipe thread lathe is synthetic also includes described radial feed power shaft (1) and is 1-3; Radial feed output gear and radial feed output shaft are 1-6.
The device that the motion of described multipath servo radial feeding numerical control pipe thread lathe is synthetic, 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; Radial feed after motion combination mechanism (108) is synthetic moves through bevel gear (109), radial feed screw (110) drives knife rest (111) and does the radial feed motion; Position-detection sensor (116) detects the positional precision of knife rest (111) and is transferred to digital control system (102) under the lathe stopped status.
Description of drawings:
Fig. 1 is that structure master of the present utility model looks cross-sectional schematic;
Fig. 2 is a control flow chart of realizing the motion synthesis system of cutter radial feed motion
Fig. 3 is the radial feeds of radial feed slide plate of the present utility model and the inline driving-chain schematic diagram between the speed of mainshaft.
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, the device that a kind of motion of multipath servo radial feeding numerical control pipe thread lathe is synthetic includes main shaft 12, is provided with facing head 13 at the front end of main shaft 12, is provided with empty cover duplicate gear group 3 on main shaft 12; The left end of radial feed power shaft 1 is provided with the radial feed servomotor, the feeding input gear 2 that right-hand member is provided with and the input gears engaged of empty cover duplicate gear group 3, the output gear of empty cover duplicate gear group 3 and feeding output gear 4-1 engagement, radial feed output shaft 5-1 passes main transmission gear wheel 7, on radial feed output shaft 5-1, also be provided with the drive bevel gear of secondary 10-1 of Bevel Gear Transmission, with being meshed of secondary 10-1 of Bevel Gear Transmission by dynamic bevel gear; The leading screw of screw-nut body 9-1 is connected by dynamic bevel gear with secondary 10-1's of Bevel Gear Transmission, and nut is connected with slide plate, is fixed with tool rest 11-1 on the slide plate.
With the output gear 4-1 counterparty of the output gear engagement of sky cover duplicate gear group 3 to 180 degree places, also be provided with output gear 4-2, output gear 4-2 is located on the radial feed output shaft 5-2, and radial feed output shaft 5-2 passes driving gear 7 and also be provided with secondary 10-2 of Bevel Gear Transmission on radial feed output shaft 5; The leading screw of screw-nut body 9-2 is connected by dynamic bevel gear with secondary 10-2's of Bevel Gear Transmission, and nut is connected with slide plate, is fixed with radially tool rest 11-2 on the slide plate.
Described empty cover duplicate gear group 3 is provided with the first duplicate gear 3-1 for including main shaft 13, is provided with clutch shaft bearing 3-4 between the main shaft 13 and the first duplicate gear 3-1; On the first duplicate gear 3-1, be provided with the second duplicate gear 3-2, be provided with the second bearing 3-5 between the first duplicate gear 3-1 and the second duplicate gear 3-2; On the second duplicate gear 3-2, be provided with the 3rd duplicate gear 3-3, be provided with the 3rd bearing 3-6 between the second duplicate gear 3-2 and the 3rd duplicate gear 3-3.
Described radial feed power shaft 1 is 3; Radial feed output gear and radial feed output shaft are 6.
Embodiment 2: see Fig. 2, the device that a kind of motion of multipath servo radial feeding numerical control pipe thread lathe is synthetic, 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; Radial feed after motion combination mechanism 108 synthesizes moves through bevel gear 109, radial feed screw 110 drives knife rests 111 and does the radial feed motion; Position-detection sensor 116 detects the positional precision of knife rest 111 and is transferred to digital control system 102 under the lathe stopped status.
During use, what the motion of multipath servo radial feeding numerical control pipe thread lathe was synthetic is calculated as, the radial feed system of described numerical control multitool pepe threading machine is based upon on the synthetic basis of motion, its control algolithm also is to be based upon on the synthetic basis of motion, after finishing kinematic scheme, determine the synthetic algorithm of motion of this lathe:
Inline driving-chain between the radial feeds of radial feed slide plate and the speed of mainshaft:
The rotating speed of radial feed servomotor, n
ActualComprise two parts composition: n
SubstantiallyWith n
Work
n
Actual=n
Substantially+ n
Work
Wherein:
n
Substantially---during the facing head rotation, sliding carriage keeps not doing the servomotor rotating speed of radial feed motion;
n
Work---during facing head zero rotating speed, slide plate is realized the servomotor rotating speed of radial feed.
Because Z
4With Z
OutputFor sun gear is done planetary motion, so the basic feeding rotation speed n of radial feed servomotor
Substantially:
So
The working speed n of feeding motor
Work:
Wherein: Z
2---the number of teeth of radial feed input gear;
Z
3 inputs---the number of teeth of the input end gear of duplex free gear;
Z
3 outputs---the number of teeth of the gear of output end of duplex free gear;
Z
4---the number of teeth of radial feed output gear;
S---the cutter radial amount of feeding, mm/ main shaft revolution;
T---radial feed screw pitch, mm;
i
Feeding---the speed reducing ratio in the radial feed chain;
So
Application examples
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--the rotation of-facing head, when the cutter radial feed speed is zero, the feed servo rotating speed of motor;
n
Work---facing head rotates to be feed servo rotating speed of motor under the zero situation;
Wherein: the s---cutter radial amount of feeding, mm/ main shaft revolution; 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:
So s=0.071563mm (during the cone of tangents screw thread, the amount of moving radially of main shaft revolution cutter);
The helical pitch of t---radial feed ball-screw is 5mm;
i
Feeding--the speed reducing ratio of-radial feed driving-chain;
So
n
Actual=n
Substantially+ n
Work=-500+7.995312=-492.00469r/min
Be-492.00469r/min so know the real work rotating speed, that is to say that the rotating speed of radial feed servomotor will remain on-492.00469r/min just can realize the amount of feeding of cutter accurately.Negative sign explanation motor speed direction is opposite with the institute set direction.
During use, described pipe threading machine transmission system, include the radial feed servomotor, feeding input gear 2, empty cover duplicate gear group 3, feeding output gear 4, feeding output shaft 5, the round support effect that the main transmission gear wheel has played, its characteristics are: empty cover duplicate gear group 3 constitutes sun gear, its rotating speed is by the feeding Electric Machine Control, main shaft circle support 8 and main shaft final stage main transmission gear wheel 7 are together with main axis rotation, be equivalent to planet carrier, its rotating speed is identical with the speed of mainshaft, feeding output gear 4 is equivalent to planetary gear, its rotational velocity is determined by the motion synthesis system, radial feed output shaft 5 is by Bevel Gear Transmission secondary 10 and screw-nut body 9, to move and transmission of power to tool rest 11, finally finish the radial feed motion of cutter, the main motion of cutter is finished by the facing head together with main axis rotation, in addition, three driving-chains of this machine adopted drive six and move radially slide plate and move, and once can install six and divide three groups of work cutter, wherein each group can work alone, and Selection of Cutting is to be controlled by the radial feed servomotor.
The radial feed servomotor passes through column gear transmission, Bevel Gear Transmission and feed screw nut transmission, rotatablely moving of motor be converted into move radially slide plate and move along the radial feed of facing head, its characteristics are: the rear side of described lathe headstock is provided with the radial feed servomotor, the radial feed driven by servomotor, radial feed power shaft 1, feeding input gear 2, empty cover duplicate gear group 3, motion and transmission of power are to feeding output gear 4 the most at last, feeding output gear 4 is affixed with radial feed output shaft 5, empty cover duplicate gear group 3 skies are enclosed within on the main shaft, the input end gear of empty cover duplicate gear group 3 and 2 engagements of feeding input gear, the gear of output end of empty cover duplicate gear group 3 and 4 engagements of feeding output gear.The axis of gear 2 maintains static with respect to main spindle box, and the axis of gear 4 is parallel to the machine tool chief axis axis, and when machine tool chief axis rotated, the axis of gear 4 was also done to rotate synchronously with the lathe main shaft.Give feeding output gear 4 by the sky cover duplicate gear group 3 that sky is enclosed within on the main shaft with the transmission of rotation of radial feed servomotor, be coaxially installed with the drive bevel gear of Bevel Gear Transmission pair 10 with feeding output gear 4, change the direction of motion by Bevel Gear Transmission secondary 10, Bevel Gear Transmission pair 10 given screw-nut body 9 by dynamic bevel gear with transmission of rotation, move radially slide plate and move thereby drive along the radial feed of facing head.Feeding this moment output gear 4 is equivalent to planetary gear, the gear of output end of empty cover duplicate gear group 3 is equivalent to sun gear, the axis of operation and the facing head of feeding output gear 4 rotate synchronously, because the effect of sun gear, even the radial feed servomotor does not rotate, just empty cover duplicate gear group 3 is not changeed, the feeding output gear 4 that is meshed with the gear of output end of sky cover duplicate gear group 3 also can rotate, the gear of output end of empty cover duplicate gear group 3 and the rotary speed (this rotating speed is in time detected and be transferred to digital control system by the rotary encoder that is installed in the main shaft end) of the gearratio between the feeding output gear 4 and facing head have determined the rotating speed of feeding output gear 4, i.e. feeding rotating speed (move radially at this moment slide plate do not produce move radially) substantially.When needs move radially slide plate and move radially, give radial feed servomotor input service feeding rotating speed again, the actual speed of feed servo motor is synthesized by basic feeding rotating speed and work feed rotating speed and is realized.This rotating speed and be to rely on the frame for movement differential attachment to realize on other the similar lathe with facing head, the utility model is to rely on digital control system to rely on software to realize.Radial feed output shaft 5 by Bevel Gear Transmission secondary 10 and screw-nut body 9 will move and transmission of power to knife rest, the radial feed of finally finishing cutter moves, its main motion is provided by the facing head that is installed on the main shaft.
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 (5)
1. the synthetic device of the motion of a multipath servo radial feeding numerical control pipe thread lathe includes main shaft (12), is provided with facing head (13) at the front end of main shaft (12), and its feature includes and be provided with empty cover duplicate gear group (3) on main shaft (12); The left end of radial feed power shaft (1) is provided with the radial feed servomotor, the feeding input gear (2) that right-hand member is provided with and the input gears engaged of empty cover duplicate gear group (3), the output gear of empty cover duplicate gear group (3) and feeding output gear (4-1) engagement, radial feed output shaft (5-1) passes main transmission gear wheel (7), on radial feed output shaft (5-1), also be provided with the drive bevel gear of Bevel Gear Transmission pair (10-1), with being meshed of Bevel Gear Transmission pair (10-1) by dynamic bevel gear; The leading screw of screw-nut body (9-1) is connected by dynamic bevel gear with Bevel Gear Transmission pair (10-1), and nut is connected with slide plate, is fixed with tool rest (11-1) on the slide plate.
2. the device that the motion of multipath servo radial feeding numerical control pipe thread lathe as claimed in claim 1 is synthetic, its feature also include with output gear (4-1) counterparty of the output gear engagement of sky cover duplicate gear group (3) to 180 degree places, also be provided with output gear (4-2), output gear (4-2) is located on the radial feed output shaft (5-2), and radial feed output shaft (5-2) passes driving gear (7) and also be provided with Bevel Gear Transmission pair (10-2) on radial feed output shaft (5); The leading screw of screw-nut body (9-2) is connected by dynamic bevel gear with Bevel Gear Transmission pair (10-2), and nut is connected with slide plate, is fixed with radially tool rest (11-2) on the slide plate.
3. the device that the motion of multipath servo radial feeding numerical control pipe thread lathe as claimed in claim 1 is synthetic, its feature also includes described empty cover duplicate gear group (3) and is provided with first duplicate gear (3-1) for including main shaft (13), is provided with clutch shaft bearing (3-4) between main shaft (13) and first duplicate gear (3-1); On first duplicate gear (3-1), be provided with second duplicate gear (3-2), be provided with second bearing (3-5) between first duplicate gear (3-1) and second duplicate gear (3-2); On second duplicate gear (3-2), be provided with the 3rd duplicate gear (3-3), be provided with the 3rd bearing (3-6) between second duplicate gear (3-2) and the 3rd duplicate gear (3-3).
4. the device that the motion of multipath servo radial feeding numerical control pipe thread lathe as claimed in claim 1 is synthetic, its feature also include described radial feed power shaft (1) and are 1-3; Radial feed output gear and radial feed output shaft are 1-6.
5. the device that the motion of multipath servo radial feeding numerical control pipe thread lathe as claimed in claim 1 is synthetic, its feature also includes 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; Radial feed after motion combination mechanism (108) is synthetic moves through bevel gear (109), radial feed screw (110) drives knife rest (111) and does the radial feed motion; Position-detection sensor (116) detects the positional precision of knife rest (111) and is transferred to digital control system (102) under the lathe stopped status.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202193792U CN201792058U (en) | 2010-06-08 | 2010-06-08 | Kinematic synthesis device of multichannel servo radial feed numerical-control pipe threading machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202193792U CN201792058U (en) | 2010-06-08 | 2010-06-08 | Kinematic synthesis device of multichannel servo radial feed numerical-control pipe threading machine |
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| CN201792058U true CN201792058U (en) | 2011-04-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870014A (en) * | 2010-06-08 | 2010-10-27 | 兰州机床厂 | Multipath servo radial feeding kinematic synthesis device of numerical control pipe threading machine and calculating method thereof |
| CN102692930A (en) * | 2012-01-11 | 2012-09-26 | 河南科技大学 | Motion synthesis method and motion device |
| US11077509B2 (en) | 2018-03-16 | 2021-08-03 | Milwaukee Electric Tool Corporation | Pipe threader |
-
2010
- 2010-06-08 CN CN2010202193792U patent/CN201792058U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870014A (en) * | 2010-06-08 | 2010-10-27 | 兰州机床厂 | Multipath servo radial feeding kinematic synthesis device of numerical control pipe threading machine and calculating method thereof |
| CN101870014B (en) * | 2010-06-08 | 2012-10-31 | 兰州星火机床有限公司 | Multipath servo radial feeding kinematic synthesis device of numerical control pipe threading machine and calculating method thereof |
| CN102692930A (en) * | 2012-01-11 | 2012-09-26 | 河南科技大学 | Motion synthesis method and motion device |
| CN102692930B (en) * | 2012-01-11 | 2014-11-05 | 河南科技大学 | Motion synthesis method and motion device |
| US11077509B2 (en) | 2018-03-16 | 2021-08-03 | Milwaukee Electric Tool Corporation | Pipe threader |
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Granted publication date: 20110413 Effective date of abandoning: 20130306 |
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