CN202726068U - Direct-driving milling teeth spindle box for moment motor - Google Patents
Direct-driving milling teeth spindle box for moment motor Download PDFInfo
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- CN202726068U CN202726068U CN2012202780362U CN201220278036U CN202726068U CN 202726068 U CN202726068 U CN 202726068U CN 2012202780362 U CN2012202780362 U CN 2012202780362U CN 201220278036 U CN201220278036 U CN 201220278036U CN 202726068 U CN202726068 U CN 202726068U
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Abstract
The utility model discloses a direct-driving milling teeth spindle box for a moment motor, which is characterized by comprising a low-speed big-torque moment motor (1), a driving synchronous pulley shaft (3), a first driving synchronous pulley (4), a second driving synchronous pulley (8), a spindle box body (9), a motor bracket (21), a first synchronous belt (10), a second synchronous belt (20), a disc cutter (11), a driven synchronous pulley shaft (14) and a cutter bar (15). According to the direct-driving milling teeth spindle box for the moment motor, which is disclosed by the utility model, the low-speed big-torque moment motor is directly connected with the disc cutter via a tensioned circle-arc tooth synchronous belt, so that the transmission path is short, and the transmission efficiency is high; the tensioned synchronous belt can be used for realizing stable transmission without side gaps so as to avoid the nonlinear vibration of the transmission system due to fluctuation cutting load; the cutting noise is lowered; the surface roughness of the cutting tooth surface is improved; and the danger of tooth surface impact pitting corrosion in the gear transmission is avoided.
Description
Technical field
The utility model relates to a kind of gear mechanism process equipment, and particularly a kind of torque motor direct of roller gear numerical control gear milling machine drives the mill teeth main spindle box.
Background technology
The large cylindrical gear is widely used in the machine driving of the industries such as mine, metallurgy, chemical industry, is very important Fundamental Course of Mechanic Manufacturing part.Traditional large cylindrical Gear Processing mode adopts gear hobbing or slotting usually, and efficient is very low.Along with the technical development of the association areas such as Numeric Control Technology, cutting-tool engineering, utilize the technique of numerical control formation tooth milling machine milling gear wheel progressively to be applied in recent years.The configuration of numerical control formation tooth milling machine studs with the forming disk milling cutter of throw away chip, utilizes without the Instant Center Envelope method directly the profile of tooth milling to be shaped, and be a kind of high efficiency large gear cutting machine.This lathe is comprised of several critical pieces such as lathe bed, column, numerical control rotating platform and main spindle boxes, requires complete machine to possess high rigidity, high reliability, can adapt to the high-rate cutting load under the continuous duty.
The main spindle box of numerical control gear milling machine is the extremely important building block of lathe, and it has not only determined the kinetic parameter of gear milling process, and himself precision and rigidity affect the precision of gear forming milling to a great extent.Common tooth milling machine main spindle box all adopts gear transmission structure, namely realizes the rotation main motion by servo principal axis motor, the moving forming disk milling cutter of reduction gearing transmission rear-drive.There is following problem in gear-driven main spindle box:
Adopt gear-driven main spindle box in order to satisfy the milling of minor diameter ring gear, be limited by simultaneously the restriction of dish milling cutter diameter, its body structure intensity and the strength of gear teeth are often weakened in design process.On the other hand, because powerful mill teeth is the process of an interrupted cut, the cutting force amplitude is large, excursion is large, and along with the mill teeth process shows stronger asymmetry and periodicity.Therefore, the load characteristic of powerful mill teeth easily causes main spindle box to produce resonance, and formation dish milling cutter is at the cutter relieving of milling process, thereby has affected precision and the surface roughness of gear milling.
Adopted multistage Helical gear Transmission in the main spindle box, the transmission chain length, high to each gear installing hole of main spindle box, centre-to-centre spacing and Geometrical Tolerance Principle between each hole, make difficulty, cost is high.In actual production process, because the foozle of a plurality of intermediate links such as gear housing, gear, power transmission shaft causes transmission system to produce larger accumulation backlass, can't form effectively preload between the gear.High-frequency excitation load in the gear milling process acts on to have on backlass and the gear flexible body without preload, it is as easy as rolling off a log so that the two-wire Hysteretic Systems of this band gap produces strong Non-Linear Ocsillation, thereby produce great noise pollution, and reduced machining accuracy and the surface roughness of workpiece.In addition, because the brute force that strong vibration forms is impacted gear surface load is seriously concentrated, easily produced local stress too high, cause rippling to damage, shortened the service life of main spindle box.
Summary of the invention
Have for gear-driven main spindle box that overall structure poor rigidity, noise are large, the easy spot corrosion of gear, finished surface has the technical problems such as chatter mark, the utility model proposes a kind of torque motor direct based on torque motor, toothed belt transmission and drives the mill teeth main spindle box.This main spindle box utilizes the drive characteristic of Timing Belt effectively to overcome the problem that the gear drive main spindle box exists, and its concrete technical scheme is as follows:
A kind of torque motor direct drives the mill teeth main spindle box, comprise low-speed big torque motor 1, active synchronization belt shaft 3, the first active synchronization belt wheel 4, the second active synchronization belt wheel 8, main spindle box body 9, electric machine support 21, the first Timing Belt 10, the second Timing Belt 20, disc milling cutter 11, passive and synchronous belt shaft 14 and knife bar 15, described low-speed big torque motor 1 is connected with active synchronization belt shaft 3, the two ends of active synchronization belt shaft 3 are respectively equipped with the first active synchronization belt wheel 4 and the second active synchronization belt wheel 8, the first active synchronization belt wheel 4 and the second active synchronization belt wheel 8 are arranged in the main spindle box body 9, the first active synchronization belt wheel 4 be connected active synchronization belt wheel 8 respectively be connected Timing Belt 20 be connected Timing Belt 10 and connect, the first active synchronization belt wheel 4 be connected active synchronization belt wheel 8 and connect passive and synchronous belt shaft 14, be provided with knife bar 15 in the passive and synchronous belt shaft 14, knife bar 15 is provided with disc milling cutter 11.
Described low-speed big torque motor 1 is connected with active synchronization belt shaft 3 by shaft coupling 2.
Described active synchronization belt shaft 3 is provided with the first belt shaft bearing 5 and the second belt shaft bearing 7, the first belt shaft bearings 5 and the second belt shaft bearing 7 outer setting belt shaft supports 6.
Described passive and synchronous belt shaft 14 is provided with inside cap 12 and outer bearing cover 18.
Described passive and synchronous belt shaft 14 is provided with interior lip packing 13 and outer lip sealing 17.
Described passive and synchronous belt shaft 14 is provided with locking nut 16 and main shaft bearing 19.
Be provided with belt tension assembly 22 between described the first Timing Belt 10 and the second Timing Belt 20.
Described disc milling cutter 11 contacts with workpiece 23.
The mill teeth main spindle box that torque motor drives comprises main spindle box body, with several chief components such as the torque motor of water-cooled and electric machine support, bilateral synchronous belt transmission system, belt tension system, spindle support structure, disc milling cutters.The concrete technical scheme of various piece is described below:
The main transmission scheme: main transmission is delivered to rotational speed of torque motor and torque on the disc milling cutter by intermediate link, realizes gear milling main motion.Its transmission link is: the straight drive torque motor of high pulling torque---large synchronous pulley---arc tooth synchronous belt---small synchronous pulley---main shaft---disc milling cutter.
The trunk-type casing of integral cast steel: utilize that ZG270-500 cast steel is disposable to be shaped the main spindle box body monoblock cast, casing is reverse U shape, comprise the excessive part in the rear portion that is connected with the vertical feed planker, the front support structure of cutterhead is installed, and the middle transition casing of connect box front and rear part.
Low-speed big torque motor drive shaft: rated speed is the top that the alternating-current synchronous low-speed big torque motor of 150rpm is installed in main spindle box body, motor output shaft links to each other with large synchronous pulley by expansion sleeve, the recycling Timing Belt will be meshed with small synchronous pulley and the large synchronous pulley that main shaft is connected, so that main shaft obtains the rated speed of 100rpm, satisfy the requirement of disc milling cutter rotating speed.Torque motor disposes independently water-cooling system.
Bilateral synchronous band drive mechanism: the torque motor output shaft links to each other with two large synchronous pulleys that are arranged in the casing both sides respectively, arc tooth synchronous belt by two separate transmission links to each other with two small synchronous pulleys that are arranged in the cutterhead both sides respectively again, and two small synchronous pulleys drive simultaneously cutterhead from the both sides of dish type cutterhead and do the rotation main motion.The belt stretcher that forms by adjusting lever and rolling bearing is housed respectively on the Timing Belt of both sides, realizes the belt tension function by the position of adjustment (adjusting) lever.
Main shaft support and cutterhead locking mechanism: disc milling cutter has endoporus and side keyway, and cutterhead is installed on the knife bar by endoporus, and the side keyway of cutterhead matches with the straight end-face key that links to each other with small synchronous pulley and realizes the moment of torsion transmission.The knife bar two ends that cutterhead is installed are supported on respectively on the main shaft of cutterhead both sides, and main shaft is supported in the spindle hole of main spindle box by the taper roll bearing of mounted in pairs, satisfy support and the rotation requirement of main shaft, knife bar and cutterhead.Be designed to stair-stepping knife bar one end and be processed with locking screw, by locking nut tension knife bar, cutterhead and spindle assemblies, can clamp cutterhead.
The utility model has the following advantages compared with prior art:
The utility model directly links to each other the low-speed big torque motor with disc milling cutter by the arc tooth synchronous belt of tensioning, and drive path is short, and transmission efficiency is high; The Timing Belt of tensioning can be realized the steady transmission without sideshake, has avoided the fluctuation cutting load to cause the Non-Linear Vibration of transmission system, has reduced the cutting noise, has improved the surface roughness of the cutting flank of tooth, has avoided the danger of flank of tooth impact spot corrosion in the gear drive.
All-in-one-piece cast steel casing of the present utility model has very high dynamic and static stiffness characteristics.High quiet rigidity can effectively reduce the main spindle box side direction cutter relieving that causes owing to asymmetric cutting force, has improved the precision of Gear Processing; High dynamic stiffness has prolonged the working durability of cutter so that the main spindle box lower mode is not easy the exciting into fluctuating load institute.
Whole main spindle box of the present utility model only is comprised of casing, torque motor, axis system and synchronization belt transmission system etc., the intermediate transmission elements such as a large amount of high class gears, bearing have been reduced, workload and the required precision of main spindle box body processing have been reduced, also reduced simultaneously the assembly work amount of main spindle box, shorten the manufacturing cycle of whole main spindle box, greatly reduced the manufacturing cost of main spindle box.
Description of drawings
Fig. 1 is the front section view of the utility model main spindle box.
Fig. 2 is the side view of the utility model main spindle box.
Among the figure: 1 is the low-speed big torque motor; 2 is shaft coupling; 3 is the active synchronization belt shaft; 4 is that the first active synchronization belt wheel, 8 is the second active synchronization belt wheel; 5 is that the first belt shaft bearing, 7 is the second belt shaft bearing; 6 is the belt shaft support; 9 is main spindle box body; 10 is that the first Timing Belt, 20 is the second Timing Belt; 11 is disc milling cutter; 12 is that inside cap, 18 is outer bearing cover; 13 is that interior lip packing, 17 is outer lip sealing; 14 is passive and synchronous belt shaft; 15 is knife bar; 16 is locking nut; 19 is main shaft bearing; 21 is electric machine support; 22 is the belt tension assembly; 23 is workpiece.
Specific embodiments
In order further to understand content of the present utility model, characteristics and function, by following execution example, and accompanying drawings is as follows:
A kind of torque motor direct drives the mill teeth main spindle box, comprise low-speed big torque motor 1, active synchronization belt shaft 3, the first active synchronization belt wheel 4, the second active synchronization belt wheel 8, main spindle box body 9, electric machine support 21, the first Timing Belt 10, the second Timing Belt 20, disc milling cutter 11, passive and synchronous belt shaft 14 and knife bar 15, described low-speed big torque motor 1 is connected with active synchronization belt shaft 3, the two ends of active synchronization belt shaft 3 are respectively equipped with the first active synchronization belt wheel 4 and the second active synchronization belt wheel 8, the first active synchronization belt wheel 4 and the second active synchronization belt wheel 8 are arranged in the main spindle box body 9, the first active synchronization belt wheel 4 be connected active synchronization belt wheel 8 respectively be connected Timing Belt 20 be connected Timing Belt 10 and connect, the first active synchronization belt wheel 4 be connected active synchronization belt wheel 8 and connect passive and synchronous belt shaft 14, be provided with knife bar 15 in the passive and synchronous belt shaft 14, knife bar 15 is provided with disc milling cutter 11.
Low-speed big torque motor 1 is connected with active synchronization belt shaft 3 by shaft coupling 2.
Active synchronization belt shaft 3 is provided with the first belt shaft bearing 5 and the second belt shaft bearing 7, the first belt shaft bearings 5 and the second belt shaft bearing 7 outer setting belt shaft supports 6.
Passive and synchronous belt shaft 14 is provided with inside cap 12 and outer bearing cover 18.
Passive and synchronous belt shaft 14 is provided with interior lip packing 13 and outer lip sealing 17.
Passive and synchronous belt shaft 14 is provided with locking nut 16 and main shaft bearing 19.
Be provided with belt tension assembly 22 between the first Timing Belt 10 and the second Timing Belt 20.
As shown in Figure 1 and Figure 2, cast-in-block main spindle box body 9 is the U font, and main spindle box body 9 left sides are connected with the lathe vertical saddle, and the parts such as cutterhead, power-transmission system are installed on main spindle box body 9 the right.In the actual process, main spindle box body 9 right parts are placed in the hole of workpiece 23, carry out from the bottom to top climb cutting or upmilling from top to bottom.
As shown in Figure 1, with screw electric machine support 21 is fixed on the left side of casing and with plane levelling on the upper plane of electric machine support and the main spindle box.Low-speed big torque motor 1 is installed on the electric machine support 21, and motor output shaft is connected with active synchronization belt shaft 3 by shaft coupling 2.Active synchronization belt shaft 3 is by the pair of horns contact ball bearing, namely the first belt shaft bearing 5 and the second belt shaft bearing 7 are supported on the belt shaft support 6 and the torque motor synchronous rotary, and the first active synchronization belt wheel 4 and the second active synchronization belt wheel 8 are separately fixed at the two ends of axle by expansion set.Belt shaft support 6 is installed in plane on the main spindle box body 9, supports whole active synchronization belt shaft to be, guarantees that by the backing plate 22 of adjusting belt shaft support bottom the center height of axles system is contour with motor output shaft during installation.
Fig. 1 bottom is main spindle box cutter support system.Cutter is plate-like form cutter 11, realizes that with endoporus and knife bar 15 little matched in clearance to lower the circular runout in the milling process, studs with the carbide chip of throw away around the cutter, directly more renews blade after the tool wear.Knife bar 15 is stepped, is supported on respectively on the main shaft of the left and right sides, for ease of changing cutterhead, adopts little matched in clearance between knife bar 15 and the left and right sides spindle hole.Left and right sides main axle structure form is identical, only take the right-hand member main shaft as the example introduction.Passive and synchronous belt shaft 14 endoporus cooperate with the cutter spindle right-hand member, and right main shaft two ends are supported on the dead eye of main spindle box body with two high-precision conical roller main shaft bearings 19 respectively, realize rotatablely moving of right main shaft; Be processed with arc toothedly on the cylindrical of right main shaft stage casing, play the effect of passive and synchronous belt shaft, realize transmission of torque.Between the first active synchronization belt wheel 4 and the second active synchronization belt wheel 8 and passive and synchronous belt shaft 14, with the first Timing Belt 10 and the second Timing Belt 20
Realization is in transmission connection; The first Timing Belt 10 and the second Timing Belt 20 are realized the belt pretension by two groups of identical belt tension assemblies 22 among Fig. 2 respectively, guarantee that arc tooth synchronous belt is in the correct position of engagement.Two groups of Timing Belts realize that bilateral synchronous drives, and can realize that moment of torsion all carries, and reduce the physical dimension of synchronization belt transmission system, increase the design size of main spindle box, improve the dynamic and static rigidity of cutting of main spindle box.
In order to prevent the cutterhead vibration in the working angles, cutterhead needs locking in working angles.Locking mechanism by being pressed in the cutterhead left side the knife bar left end shaft shoulder and the right-hand member locking screw of knife bar realize.In cutterhead when locking, and tight locking nut 16,, the knife bar left end shaft shoulder is fixed together disc milling cutter 11 and passive and synchronous belt shaft 14, and the axial location of cutterhead is realized in the left side of the passive and synchronous belt shaft 14 by right-hand member.For transmitting the cutting moment of torque, two end faces of cutterhead are provided with side keyway, and the end face that left and right sides main shaft contacts with cutterhead is provided with straight end-face key, by the cooperation of straight end-face key and keyway, realize that Motor torque is to the transmission of cutterhead.
The course of work of the present utility model is as follows:
Check on request the tensioning situation of two-side synchronous band, jump and axial float in the footpath of knife bar axis system, confirms that main spindle box body 9 duties are good.Unclamp locking nut 16, extract knife bar 15 out from left end, disc milling cutter 11 usefulness cutterhead carriages are placed on main spindle box body 9 middle, load onto knife bar 15 and tighten locking nut 16, change the carbide chip of cutterhead.
The staring torque motor, with 1 speed governing of low-speed big torque motor to suitable rotating speed, low-speed big torque motor 1 is passed to respectively left and right sides main shaft by the arc tooth synchronous belt transmission system of main spindle box body 9 bilaterals with moment of torsion, and that realizes torque all carries transmission, satisfies the needs of high-power powerful cutting.Because Timing Belt has elasticity, without the engagement characteristics of sideshake, can effectively reduce and absorb the vibration in the working angles, guarantee to cut roughness and the profile of tooth cutting precision of the flank of tooth.
Left and right sides main shaft further is delivered to moment of torsion by straight end-face key and overcomes resistance to cutting on the cutter.Cutter identifies direction for being rotated counterclockwise by Fig. 2, realizes climb cutting when main spindle box body 9 moves upward with respect to workpiece, otherwise is upmilling.
Through experimental verification, the present embodiment adopts the carbide alloy forming disk milling cutter of diameter 400mm, rotational speed of torque motor is 100rpm, cutting pinion modulus 20, a full-depth tooth deep-cutting, stable axis can reach 300mm/min, stable cutting process to the cutting feeding speed, noise is lower than 90dB, and surface roughness reaches 1.6.
Embodiment recited above is described preferred embodiment of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design concept prerequisite; common engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model, the technology contents that the utility model is asked for protection all is documented in claims.
Claims (8)
1. a torque motor direct drives the mill teeth main spindle box, it is characterized in that comprising low-speed big torque motor (1), active synchronization belt shaft (3), the first active synchronization belt wheel (4), the second active synchronization belt wheel (8), main spindle box body (9), electric machine support (21), the first Timing Belt (10), the second Timing Belt (20), disc milling cutter (11), passive and synchronous belt shaft (14) and knife bar (15), described low-speed big torque motor (1) is connected with active synchronization belt shaft (3), the two ends of active synchronization belt shaft (3) are respectively equipped with the first active synchronization belt wheel (4) and the second active synchronization belt wheel (8), the first active synchronization belt wheel (4) and the second active synchronization belt wheel (8) are arranged in the main spindle box body (9), the first active synchronization belt wheel (4) be connected active synchronization belt wheel (8) respectively be connected Timing Belt (20) be connected Timing Belt (10) and connect, the first active synchronization belt wheel (4) be connected active synchronization belt wheel (8) and connect passive and synchronous belt shaft (14), be provided with knife bar (15) in the passive and synchronous belt shaft (14), knife bar (15) is provided with disc milling cutter (11).
2. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that described low-speed big torque motor (1) is connected with active synchronization belt shaft (3) by shaft coupling (2).
3. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that described active synchronization belt shaft (3) is provided with the first belt shaft bearing (5) and the second belt shaft bearing (7), the first belt shaft bearing (5) and the second belt shaft bearing (7) outer setting belt shaft support (6).
4. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that described passive and synchronous belt shaft (14) is provided with inside cap (12) and outer bearing cover (18).
5. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that described passive and synchronous belt shaft (14) is provided with interior lip packing (13) and outer lip sealing (17).
6. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that described passive and synchronous belt shaft (14) is provided with locking nut (16) and main shaft bearing (19).
7. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that being provided with belt tension assembly (22) between described the first Timing Belt (10) and the second Timing Belt (20).
8. torque motor direct according to claim 1 drives the mill teeth main spindle box, it is characterized in that described disc milling cutter (11) contacts with workpiece (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202780362U CN202726068U (en) | 2012-06-13 | 2012-06-13 | Direct-driving milling teeth spindle box for moment motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202780362U CN202726068U (en) | 2012-06-13 | 2012-06-13 | Direct-driving milling teeth spindle box for moment motor |
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| Publication Number | Publication Date |
|---|---|
| CN202726068U true CN202726068U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202780362U Expired - Fee Related CN202726068U (en) | 2012-06-13 | 2012-06-13 | Direct-driving milling teeth spindle box for moment motor |
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| Country | Link |
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| CN (1) | CN202726068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717100A (en) * | 2012-06-13 | 2012-10-10 | 南京工大数控科技有限公司 | Gear milling spindle box directly driven by torque motor |
| CN104325198A (en) * | 2013-12-07 | 2015-02-04 | 柳州正菱重型数控机床有限公司 | Universal milling suspension beam rack milling tool |
| KR102099540B1 (en) * | 2019-10-31 | 2020-04-09 | 조미영 | Table Top Horizontal Drilling Machine |
| CN113263227A (en) * | 2021-05-14 | 2021-08-17 | 宜昌市致远新技术有限公司 | Milling cutter frame structure for milling internal gear and milling method thereof |
-
2012
- 2012-06-13 CN CN2012202780362U patent/CN202726068U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717100A (en) * | 2012-06-13 | 2012-10-10 | 南京工大数控科技有限公司 | Gear milling spindle box directly driven by torque motor |
| CN102717100B (en) * | 2012-06-13 | 2014-09-10 | 南京工大数控科技有限公司 | Gear milling spindle box directly driven by torque motor |
| CN104325198A (en) * | 2013-12-07 | 2015-02-04 | 柳州正菱重型数控机床有限公司 | Universal milling suspension beam rack milling tool |
| KR102099540B1 (en) * | 2019-10-31 | 2020-04-09 | 조미영 | Table Top Horizontal Drilling Machine |
| CN113263227A (en) * | 2021-05-14 | 2021-08-17 | 宜昌市致远新技术有限公司 | Milling cutter frame structure for milling internal gear and milling method thereof |
| CN113263227B (en) * | 2021-05-14 | 2024-05-17 | 宜昌市致远新技术有限公司 | Milling cutter frame structure for milling internal gear and milling method thereof |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20130213 Termination date: 20150613 |
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| EXPY | Termination of patent right or utility model |