CN202607380U - Rotary ball screw mechanism for Z-directional feeding of nuts for numerical control machine tool - Google Patents
Rotary ball screw mechanism for Z-directional feeding of nuts for numerical control machine tool Download PDFInfo
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- CN202607380U CN202607380U CN 201220137508 CN201220137508U CN202607380U CN 202607380 U CN202607380 U CN 202607380U CN 201220137508 CN201220137508 CN 201220137508 CN 201220137508 U CN201220137508 U CN 201220137508U CN 202607380 U CN202607380 U CN 202607380U
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- ball screw
- bearing
- nut
- screw nut
- wire rod
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Abstract
The utility model discloses a rotary ball screw mechanism for Z-directional feeding of nuts for a numerical control machine tool. The rotary ball screw mechanism comprises a motor and a ball screw mechanism which is arranged in a slide carriage support. The ball screw mechanism comprises a ball screw, a ball screw nut and a bearing block. The ball screw and the ball screw nut are arranged in the bearing block in a matching manner. The motor is connected with the ball screw nut through a power drive mechanism. A roller bearing and a thrust bearing are arranged between the ball screw nut and the bearing block. The bearing block is fixedly connected with the slide carriage support. The ball screw is fixed, the ball screw nut rotates, and rotation inertia of the ball screw nut is much smaller than that of the whole ball screw mechanism, so that stability of motion of the machine tool is increased greatly, each precision of the machine tool is increased, and the service life of the machine tool is prolonged.
Description
Technical field
The utility model relates to the technical field of mechanical transmission mechanism, especially relates to a kind of numerical controlled lathe Z to the rotary ball wire rod mechanism of feed nut.
Background technology
The data lathe is in the process of machining, and there is rotary inertia in the meeting in screw mandrel when work self, and this rotary inertia has influenced the stationarity of machine tool motion, makes lathe each item precision and life-span being under some influence in various degree.
The Chinese patent document (day for announcing: on January 27th, 2010, notification number: CN201391585Y) disclose a kind of cutting machine transmission mechanism, relate in particular to a kind of length feed ball screw transmission mechanism.Its technical scheme is: this mechanism comprises length feed ball screw, ball screw nut seat, vertical line slideway, rail plate pair and stepper motor; Said ball screw nut seat is installed in the middle of the length feed ball screw; The rail plate pair is installed in the middle of vertical line slideway, and said stepper motor is connected with length feed ball screw concentric; The length feed ball screw is installed in centre position, two holes, front and back, center under the assembly brandreth, is fixed on two groups of bearing centres of front-end bearing pedestal and rear bearing block; Stepper motor is installed on the tail end stepper motor bearing support plane of assembly brandreth, and vertically line slideway is installed in the left and right sides, assembly brandreth top, is that benchmark left and right sides parallel vertical is installed with the screw mandrel center.
Technique scheme provides a kind of length feed ball screw transmission mechanism that the assembly parts are independently installed that can be used as; Be in order to guarantee installation quality and to reach the high purpose of installation production efficiency; And the rotary inertia that self exists when working for screw mandrel is not solved; And the existence of this rotary inertia can influence the stationarity of machine tool motion, and lathe each item precision and life-span can be under some influence.
The utility model content
The purpose of the utility model is self a rotary inertia when solving screw mandrel work under the long situation of screw mandrel in the prior art; Influence the stationarity of machine tool motion; Make the problem that lathe each item precision and life-span be under some influence, and provide a kind of numerical controlled lathe Z to the rotary ball wire rod mechanism of feed nut.
The utility model realizes that the technical scheme that its technical purpose adopted is: a kind of numerical controlled lathe Z is to the rotary ball wire rod mechanism of feed nut; Comprise motor and ball wire rod mechanism; Described ball wire rod mechanism is arranged in the slide carriage bearing; Described ball wire rod mechanism comprises ball screw, ball screw nut and bearing block, and described ball screw and ball screw nut are equipped with in bearing block, and described motor is connected with ball screw nut through power drive mechanism; Be provided with roller bearing and thrust bearing between described ball screw nut and the bearing block, described bearing block is fixedly connected with the slide carriage bearing.The utility model adopts ball wire rod mechanism is arranged in the slide carriage bearing; Slide carriage bearing and numerically controlled lathe slide carriage are fixed together, and ball screw is fixed in this structure, and the ball screw nut rotation; Ball screw nut is through thrust bearing impeller-hub bearing and slide carriage support movement; And the slide carriage bearing is to be fixedly connected with the numerically controlled lathe slide carriage, and ball nut will move axially along ball screw, thereby the Z that has realized slide carriage is to motion.Because under the long situation of ball screw, the driven by motor screw mandrel moves in the prior art, the rotary inertia of whole ball wire rod mechanism is very big; Stationarity influence to machine tool motion is bigger; And the ball wire body of rod is static in the utility model, the ball screw nut rotation, and what the rotary inertia of ball screw nut can be little for the rotary inertia of whole ball wire rod mechanism is many; Therefore improved the stationarity of machine tool motion greatly, guaranteed and improved lathe each item precision and life-span.
As preferably, described power drive mechanism comprises the motor synchronous belt wheel on the output shaft that is arranged on motor, the big synchronous pulley that is fixedly connected with the end of ball screw nut, and described motor synchronous belt wheel is in transmission connection through synchronous band with big synchronous pulley.Adopt band transmission synchronously, power transmission is stable, and is fricton-tight during work; Do not lose the step, gearratio is accurately arranged, transmission efficiency is high; Good energy-conserving effect, gear range is big, ability operate as normal under the compact conformation severe environmental conditions; Improved the stationarity of machine tool motion, guaranteed and improved lathe each item precision and life-span.
As preferably; Described roller bearing is a Biserial cylindrical roller bearing; Be provided with two, the place, two ends is leaned in the inside that is separately positioned on bearing block, and the outer end of roller bearing is respectively arranged with the hole with back-up ring, bearing holder (housing, cover) and sealing device; Described thrust bearing is provided with two, is separately positioned on the inboard of Biserial cylindrical roller bearing.The feed screw nut is installed on the bearing block through four bearings; Two Biserial cylindrical roller bearings are in order to realize radial support; Two thrust bearings are in order to realize axial location, and Biserial cylindrical roller bearing outer ring axial location realizes with back-up ring through side stage rank and hole.Such structure processing and easy for installation, good sealing effect is convenient to realize the purpose of Z to feeding.
As preferably; Described roller bearing away from power drive mechanism one end is combined together through spacer and ball screw nut; Described spacer and ball screw nut tight fit; The spacer inner face cooperates with the end face of thrust bearing, and the outer face of spacer cooperates with the end face of locking nut on being arranged on ball screw nut.Installation and location that the purpose that spacer is set has been this realizes internal bearings, end be through locking nut locking, the one, for the pine dress convenient, the 2nd, in order further to strengthen to axial location.
As preferably, described big synchronous pulley is connected with ball screw nut with alignment pin through soket head cap screw.Big synchronous pulley and ball screw nut link into an integrated entity through soket head cap screw and alignment pin, have realized the transmission of servomotor to ball screw nut thus.
As preferably, described bearing block is fixedly connected through screw with the slide carriage bearing.Bearing block is fixedly connected through screw with the slide carriage bearing, and the slide carriage bearing is fixedly connected with the numerically controlled lathe slide carriage, thereby the Z that has realized slide carriage is to motion.
As preferably, described motor is a servomotor, and the output shaft and the ball screw of motor laterally arrange, and the motor synchronous belt wheel is arranged on same the vertical curve with big synchronous pulley.Adopting the above-mentioned structure that is provided with of servomotor is in order further to improve stationarity and the lathe each item precision and the life-span of machine tool motion.
The beneficial effect of the utility model is: the ball wire body of rod is static in the utility model; The ball screw nut rotation; What the rotary inertia of ball screw nut can be little for the rotary inertia of whole ball wire rod mechanism is many; Therefore improved the stationarity of machine tool motion greatly, guaranteed and improved lathe each item precision and life-span.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model numerical controlled lathe Z to the rotary ball wire rod mechanism of feed nut.
Among the figure: 1, ball screw, 2, ball screw nut, 3, locking nut, 4, spacer, 5, sealing device; 6, bearing holder (housing, cover), 7, the hole uses back-up ring, 8, bearing block, 9, the slide carriage bearing; 10, roller bearing, 11, thrust bearing, 13, motor, 14, the motor synchronous belt wheel; 15, synchronous band, 16, big synchronous pulley, 17, soket head cap screw, 18, alignment pin.
The specific embodiment
Below through specific embodiment and combine accompanying drawing to the utility model technical scheme be described further.
Embodiment 1:
In the embodiment shown in fig. 1; A kind of numerical controlled lathe Z is to the rotary ball wire rod mechanism of feed nut; Comprise motor and ball wire rod mechanism, ball wire rod mechanism is arranged in the slide carriage bearing 9, and ball wire rod mechanism comprises ball screw 1, ball screw nut 2 and bearing block 8; Ball screw 1 is equipped with in bearing block 8 with ball screw nut 2; Motor 13 is connected with ball screw nut 2 through power drive mechanism, is provided with Biserial cylindrical roller bearing 10 and thrust bearing 11 between ball screw nut 2 and the bearing block 8, and bearing block 8 and slide carriage bearing 9 are fixedly connected through screw.Motor 13 is a servomotor, and the output shaft of motor 13 and ball screw 1 laterally arrange, and motor synchronous belt wheel 14 is arranged on same the vertical curve with big synchronous pulley 16.
Power drive mechanism comprises the motor synchronous belt wheel 14 on the output shaft that is arranged on motor 13, the big synchronous pulley 16 that is fixedly connected with the end of ball screw nut 2, and motor synchronous belt wheel 14 and big synchronous pulley 16 are through be with 15 to be in transmission connection synchronously.Big synchronous pulley 16 is connected with ball screw nut 2 with alignment pin 18 through soket head cap screw 17.
Biserial cylindrical roller bearing 10 is provided with two; The place, two ends is leaned in the inside that is separately positioned on bearing block 8; The outer end of Biserial cylindrical roller bearing 10 is respectively arranged with the hole with back-up ring 7, bearing holder (housing, cover) 6 and sealing device 5; Sealing device 5 adopts sealing ring, and thrust bearing 11 is provided with two, is separately positioned on the inboard of Biserial cylindrical roller bearing 10.Biserial cylindrical roller bearing 10 away from power drive mechanism one end is combined together through spacer 4 and ball screw nut 2; Spacer 4 and ball screw nut 2 tight fits; Spacer 4 inner faces cooperate with the end face of thrust bearing 11, and the outer face of spacer 4 cooperates with the end face of locking nut 3 on being arranged on ball screw nut 2.
The operation principle of this device is following:
Servomotor 13 through motor synchronous belt wheel 14 and be with synchronously 15 with big synchronous pulley 16 transferring power; Big synchronous pulley 16 links into an integrated entity through soket head cap screw 17 and alignment pin 18 with ball screw nut 2, has realized the transmission of servomotor to ball screw nut thus.Ball screw nut 2 is installed on the bearing block 8 through four bearings; Radial support is realized by two Biserial cylindrical roller bearings 10; Axially the both direction location is by two thrust bearings 11 and spacer 4 and two locking nuts 3 realizations; Locking nut 3 adopts two, is to loosen for ease, and Biserial cylindrical roller bearing 10 outer ring axial location realize with back-up ring 7 through side stage rank and hole.The ball wire body of rod 1 is fixed; And ball screw nut 2 rotations; Ball nut 2 will move axially along ball screw; Ball screw nut 2 is through two thrust bearing 11 impeller-hub bearings 8 and 9 motions of slide carriage bearing, and slide carriage bearing 9 is fixedly connected with the numerically controlled lathe slide carriage, thereby the Z that has realized slide carriage is to motion.The sealing of the bearing holder (housing, cover) 6 on both sides and four bearings of sealing ring 5 realizations prevents that external dust from getting into the bearing place and influencing bearing life, and roller screw pair and bearing all adopt senior grease lubrication.
Claims (7)
1. a numerical controlled lathe Z is to the rotary ball wire rod mechanism of feed nut; Comprise motor and ball wire rod mechanism; It is characterized in that: described ball wire rod mechanism is arranged in the slide carriage bearing (9); Described ball wire rod mechanism comprises ball screw (1), ball screw nut (2) and bearing block (8); Described ball screw (1) is equipped with in bearing block (8) with ball screw nut (2); Described motor (13) is connected with ball screw nut (2) through power drive mechanism, is provided with roller bearing (10) and thrust bearing (11) between described ball screw nut (2) and the bearing block (8), and described bearing block (8) is fixedly connected with slide carriage bearing (9).
2. a kind of numerical controlled lathe Z according to claim 1 is to the rotary ball wire rod mechanism of feed nut; It is characterized in that: described power drive mechanism comprises the motor synchronous belt wheel (14) on the output shaft that is arranged on motor (13), the big synchronous pulley (16) that is fixedly connected with the end of ball screw nut (2), and described motor synchronous belt wheel (14) is in transmission connection through being with (15) synchronously with big synchronous pulley (16).
3. a kind of numerical controlled lathe Z according to claim 1 is to the rotary ball wire rod mechanism of feed nut; It is characterized in that: described roller bearing (10) is a Biserial cylindrical roller bearing; Be provided with two, the place, two ends is leaned in the inside that is separately positioned on bearing block (8), and the outer end of roller bearing (10) is respectively arranged with the hole with back-up ring (7), bearing holder (housing, cover) (6) and sealing device (5); Described thrust bearing (11) is provided with two, is separately positioned on the inboard of roller bearing (10).
4. a kind of numerical controlled lathe Z according to claim 3 is to the rotary ball wire rod mechanism of feed nut; It is characterized in that: described roller bearing away from power drive mechanism one end (10) is combined together through spacer (4) and ball screw nut (2); Described spacer (4) and ball screw nut (2) tight fit; Spacer (4) inner face cooperates with the end face of thrust bearing (11), and the outer face of spacer (4) cooperates with the end face of locking nut (3) on being arranged on ball screw nut (2).
5. a kind of numerical controlled lathe Z according to claim 2 is characterized in that to the rotary ball wire rod mechanism of feed nut: described big synchronous pulley (16) is connected with ball screw nut (2) with alignment pin (18) through soket head cap screw (17).
6. a kind of numerical controlled lathe Z according to claim 1 is characterized in that to the rotary ball wire rod mechanism of feed nut: described bearing block (8) is fixedly connected through screw with slide carriage bearing (9).
7. a kind of numerical controlled lathe Z according to claim 2 is to the rotary ball wire rod mechanism of feed nut; It is characterized in that: described motor (13) is a servomotor; The output shaft of motor (13) and ball screw (1) laterally arrange, and motor synchronous belt wheel (14) is arranged on same the vertical curve with big synchronous pulley (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220137508 CN202607380U (en) | 2012-04-01 | 2012-04-01 | Rotary ball screw mechanism for Z-directional feeding of nuts for numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220137508 CN202607380U (en) | 2012-04-01 | 2012-04-01 | Rotary ball screw mechanism for Z-directional feeding of nuts for numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202607380U true CN202607380U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220137508 Expired - Fee Related CN202607380U (en) | 2012-04-01 | 2012-04-01 | Rotary ball screw mechanism for Z-directional feeding of nuts for numerical control machine tool |
Country Status (1)
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| CN (1) | CN202607380U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493610A (en) * | 2014-12-19 | 2015-04-08 | 无锡大龙马数控机床制造有限责任公司 | Z-axis feed drive device |
| CN104493614A (en) * | 2014-12-19 | 2015-04-08 | 无锡大龙马数控机床制造有限责任公司 | Z-axis feed drive device with counterweight balance |
| CN107255148A (en) * | 2017-08-08 | 2017-10-17 | 广州汽车集团股份有限公司 | Lead screw transmission mechanism and line traffic control shift actuator |
| CN110273992A (en) * | 2018-03-15 | 2019-09-24 | 江苏国全自动化科技有限公司 | Ball nut rotates component and its installation method |
-
2012
- 2012-04-01 CN CN 201220137508 patent/CN202607380U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493610A (en) * | 2014-12-19 | 2015-04-08 | 无锡大龙马数控机床制造有限责任公司 | Z-axis feed drive device |
| CN104493614A (en) * | 2014-12-19 | 2015-04-08 | 无锡大龙马数控机床制造有限责任公司 | Z-axis feed drive device with counterweight balance |
| CN104493614B (en) * | 2014-12-19 | 2017-02-22 | 无锡大龙马数控机床制造有限责任公司 | Z-axis feed drive device with counterweight balance |
| CN107255148A (en) * | 2017-08-08 | 2017-10-17 | 广州汽车集团股份有限公司 | Lead screw transmission mechanism and line traffic control shift actuator |
| CN107255148B (en) * | 2017-08-08 | 2023-08-11 | 广州汽车集团股份有限公司 | Screw rod transmission mechanism and wire control gear shifting actuator |
| CN110273992A (en) * | 2018-03-15 | 2019-09-24 | 江苏国全自动化科技有限公司 | Ball nut rotates component and its installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121219 Termination date: 20180401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |