CN201346630Y - Main servo mechanism of single main shaft - Google Patents
Main servo mechanism of single main shaft Download PDFInfo
- Publication number
- CN201346630Y CN201346630Y CNU2008202196011U CN200820219601U CN201346630Y CN 201346630 Y CN201346630 Y CN 201346630Y CN U2008202196011 U CNU2008202196011 U CN U2008202196011U CN 200820219601 U CN200820219601 U CN 200820219601U CN 201346630 Y CN201346630 Y CN 201346630Y
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- main shaft
- bearing
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- spindle
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Abstract
The utility model relates to a main servo mechanism of a single main shaft, which is used on a transmission mechanism on a horizontal numerical control machine, and is characterized in that a main servo motor is arranged on a machine base arranged on the lower portion of a machine main shaft box, and a small belt pulley is fixed on a motor shaft by a tension sleeve and a flange. The structure of the single main shaft uses a support mode of a front bearing and a rear bearing, the front end of the main shaft uses a combined support mode that a biserial cylindrical roller bearing is closely supported by the flange and outer rings of angle contact ball bearings with a 40 degrees thrust angle is leaned on a hole shoulder on the front end of the main shaft, the rear bearing is supported by using the biserial cylindrical roller bearing, the outer ring of the rear bearing is located on a box shoulder, is closely supported on the inner portion and the outer portion by the flange, and is adjusted by a locking nut. An encoder of the main shaft, a pair of angle contact ball bearings and a big spacing sleeve of an inserted-tooth shaped belt wheel are fixed on a support by an end cover, and the transmission numeration of a tooth shaped belt wheel and a tooth shaped belt wheel on the rear end of the main shaft is 1:1. A main servo and signal main shaft mechanism leads the mechanical transmission of the machine to be more simple and flexible, the transmission chain is short, the noise is low, thereby guaranteeing the main shaft to achieve the stepless speed regulating and the constant linear cutting functions. An adjusting gap of a main shaft bearing after improving is simplified, the dynamic balancing regulation is more convenient and rapid, the water protection of the front end of the main shaft uses a multiple labyrinth type water-proof structure, thereby leading the whole structure to have better reliability.
Description
Technical field
The utility model structure relates to mechanical production devices, can be applicable to the single main shaft main servo mechanism on the horizontal digital-control lathe of flat lathe bed or inclined lathe bed.
Background technology
The Digit Control Machine Tool main transmission, the power source classification by driving generally is divided three classes promptly: exchange threephase asynchronous machine, variable-frequency motor, main servo motor.
The driving mechanism that Digit Control Machine Tool is used has common electric machine to add that multistage manual gear shift mechanism, variable-frequency motor add electronic multistage gear shift mechanism or hydraulic multi-stage gear shift mechanism, the main servo motor adds single mainshaft mechanism.Existing structure main shaft bearing gap and dynamic balancing adjustment trouble, the front-end of spindle waterproof effect is poor, and the main spindle box of multistage gear shift mechanism adopts gear drive, must adopt oil lubrication, and the main shaft temperature rise is higher, and noise is bigger, and rotating speed is lower, and the processing parts precision is lower.
Summary of the invention
The purpose of this utility model provides the single main shaft main servo of cover mechanism, is equipped on the Digit Control Machine Tool, realizes the high-speed turning machining functions of Digit Control Machine Tool.
List main shaft main servo mechanism is applied to the transmission mechanism on the horizontal digital-control lathe, it is characterized in that the main servo motor places on the lathe base of machine tool chief axis lower box part, and small belt pulley is fixed on the motor shaft by tensioner cover, ring flange; Single main axle structure adopts forward and backward bearings mode, front-end of spindle adopts Biserial cylindrical roller bearing to hold out against with ring flange and the angular contact ball bearing outer shroud of thrust angle 40 degree leans against the combined support form of front-end of spindle hole shoulder, rear bearing adopts the Biserial cylindrical roller bearing supporting, the rear bearing outer shroud is positioned at the casing shoulder, holds out against, adjusts with locking nut with ring flange is inside and outside; The big spacer of spindle encoder and a pair of angular contact ball bearing, cog shape belt wheel is fixed on the support with end cap, and the profile of tooth belt wheel of profile of tooth belt wheel and rear-end of spindle is transmission in 1: 1 numeration.
Single main shaft main servo drive disk assembly of Digit Control Machine Tool is the vitals that is equipped on the Digit Control Machine Tool, and supporting electric, cooling, lubricated, control section and the corresponding combination of the system on the lathe arranged, the design's the outstanding feature of single main shaft main servo mechanism is that package unit is simple in structure, easy to adjust, the reliability height is easy to assembling.And main servo adds single mainshaft mechanism and makes the machine driving simple and flexible more of lathe, and driving-chain is short, and noise is low, guarantees that main shaft realizes stepless speed regulation and permanent linear speed cutting function.Improve main shaft bearing adjusting play, back and oversimplify, more convenient and quicker is regulated in dynamic balancing, and the front-end of spindle waterproof adopts multiple labyrinth type waterproof construction, makes the total better reliability.Its superiority is as follows:
1. driving-chain is short, and is simple in structure, and the speed of mainshaft is improved greatly, and the main spindle box noise is little, and empty load of motor consumption is few.
2. grease lubrication is adopted in bearing lubrication, and the main shaft temperature rise is low, and the processing parts precision is higher, good stability.
3. the main servo motor is installed on the base of band T type groove, and power transmission realizes by belt between main motor and the main shaft, and is simple in structure, easy to operate, and the reliability height is easy to realize.
4. single main axle structure layout adopts the front and back bearings supporting, greatly improved the rigidity of support of main shaft, whole support pattern bearing load distributing equilibrium is reasonable, the Biserial cylindrical roller bearing gap-adjusting structure of front and back end is simple, the interior ring of nose angle contact ball bearing and cylinder roller bearing carries out the gap adjustment with the twin-lock jack panel, the rear bearing outer shroud is close to ring flange, and interior ring one side holds out against with ring flange, and opposite side is adjusted with locking nut; The match grinding adjusting pad is adopted in the czermak space adjustment in the cylinder roller bearing in the past, and the workman installs cumbersome, by improving the trouble that structure has been removed workman's match grinding workpiece from.
5. it is convenient that dynamically balanced adjustment is more prone to, and embodied human oriented design.Front end is inlayed the activity balancing piece near on the adjustment interstage sleeve of angular contact ball bearing one side, adjusts balance by the position of adjusting balance weight, and the balance adjustment of rear end is to increase screwed hole on big belt pulley, adjusts balance with the quantity that increases screw.Through measuring dynamically balanced measured value 0.3g.cm, well below national standard, good just dynamic balancing makes the vibration of complete machine reduce greatly, and mechanically operated noise obviously improves.
6. main shaft casing front end and ring flange end face increase sealing ring, between front-end of spindle and the waterproof flange, front end is adjusted between nut and the ring flange and is designed water dumping, labyrinth shape waterproof construction, the protective cover of front-end of spindle face design simultaneously, make front-end of spindle that multiple-protection be arranged, water resistance is good, and barrier propterty strengthens greatly.
7. because the main servo motor is adopted in main transmission, by suitable reduction of speed ratio, the assurance main shaft can accurately be located, whole lathe infinitely variable speeds and the cutting of permanent linear speed in range of spindle speeds have been realized, overcome variable-frequency motor slow cutting moment of torsion weakness less than normal, made the processing characteristics of lathe obtain very big improvement.
Above-mentioned all improvement, make main servo motor speed in very wide scope adjustable continuously, and under each speed, all can provide enough cutting force, speed of mainshaft height, main shaft temperature rise are low, cutting precision and Surface Machining precision improve greatly, and single main axle structure makes main spindle box and multiaxis casing comparison noise reduce greatly.
Description of drawings
Fig. 1 is main servo motor and main spindle box coupled position figure;
Fig. 2 is the main spindle box cross-sectional view;
The specific embodiment
List main shaft main servo mechanism is applied on the main transmission of Digit Control Machine Tool, with the corresponding combination of electrical system, hydraulic system, cooling device, knife rest, lubricating system of lathe, it is characterized in that mechanical part comprises following two-part structure:
1, is convenient to install the main servo structure of adjustment
The main servo motor need place air permeability good, and the position of the firm and good rigidly of structure requires compact overall structure simple simultaneously, is easy to install, adjusts and maintenance.As shown in Figure 1: main servo motor 1 places lathe headstock 17 bottoms, is placed in the lathe base 39, main servo motor 1 is installed on the motor base 2 of band slip T type groove, adjust bolt 5 and hollow stud 3 passes the locking nut 4 that is fixed on the lathe base 39 for four, adjust motor base 2 height; With screw 8 ring flange 9 is fixed on the belt pulley 6, and overlaps 7 tensioners by tensioner belt pulley 6 is connected on 1 in the main servo motor securely.
The position adjustment of main servo motor 1 can be slided along the T type groove of motor base 2, can adjust the height that hollow stud 3 is adjusted motor base 2 when adjusting motor belt, and total is simple, and is easy to operate.
2, single main shaft main spindle box structure of high rigidity, big spindle through-hole, low noise, good seal performance
Single main axle structure layout adopts front and back bearings to support, as shown in Figure 2: it is characterized in that main shaft 10 front ends adopt Biserial cylindrical roller bearing 11 and angular contact thrust ball bearing 12 combined support modes, wherein angular contact thrust ball bearing 12 contact angles are selected the big contact angle of 40 degree for use, have greatly improved the rigidity of support of main shaft 10.Rear bearing adopts Biserial cylindrical roller bearing 13 supportings.Biserial cylindrical roller bearing 11, the 13 gap adjustment of front and back end supporting are simple, preceding end bearing adopts locking nut 14 and special-purpose locking nut 15 to adjust, make things convenient for the workman that adjustment is installed especially, preceding supporting leans against 40 degree angular contact thrust ball bearings, 12 outer shrouds on the main shaft casing 16 hole shoulders away from spindle nose one side, interior ring is close to spacer 17, by locking nut 14 lockings; Close spindle nose one side of preceding supporting is adjusted also locking of czermak spaces in the Biserial cylindrical roller bearings 13 with special-purpose locking nut 15, holds out against Biserial cylindrical roller bearing 13 outer shrouds with the ring flange 18 of being with seal groove, adds waterproof ring flange 19; Increase dottle pin 21,22 between the thrust bearing 12 of front end and the roller bearing 11, the effective length that supports that extended, thus improve support stiffness greatly.Outer shroud one side of rear bearing 13 is positioned on the main shaft casing 16 rear orifice shoulders, opposite side holds out against outer race with ring flange 23, the interior ring with former and later two spacers 24,25 hold out against, the bearing clearance is adjusted with twin- lock jack panel 26,27, is locking nut 26, belt pulley 29, profile of tooth belt wheel 28 successively near rear-end of spindle one side, belt pulley 29 is connected on the main shaft 10 by key 30, and belt pulley 29 usefulness locking nuts 26 are fixed on the main shaft 10.
Waterproofing design: design seal groove and 1 backwater hole 40 on the ring flange 18, locking nut 15 outer shrouds design water dumping groove 38,3 backwater holes 41 of design on the waterproof ring flange 19, ring flange 19 outside design specialized protective covers 20, main shaft 10 Front-end Design become concentric ladder platform, and dual water dumping groove 39 is arranged.
For the rear-end of spindle that needs of machine tooling screw thread also is equipped with spindle encoder 31, spindle encoder 31 is screwed on support 32, the axle head of spindle encoder 31 connects with ring flange 34 by key 33, ring flange 34 is fixed on the big spacer 35, big spacer 35 supports by a pair of angular contact ball bearing 36 with support 32, profile of tooth belt wheel 37 is fixed on the big spacer 35, and profile of tooth belt wheel 37 is transmission in 1: 1 with the profile of tooth belt wheel 28 of rear-end of spindle, realizes the transmission numeration by cog belt.
Claims (3)
1, single main shaft main servo mechanism is applied in the transmission mechanism on the horizontal digital-control lathe, it is characterized in that the main servo motor places on the lathe base of machine tool chief axis lower box part, and small belt pulley is fixed on the motor shaft by tensioner cover, ring flange; Single main axle structure adopts forward and backward bearings mode, front-end of spindle adopts Biserial cylindrical roller bearing to hold out against with ring flange and the angular contact ball bearing outer shroud of thrust angle 40 degree leans against the combined support form of front-end of spindle hole shoulder, rear bearing adopts the Biserial cylindrical roller bearing supporting, the rear bearing outer shroud is positioned at the casing shoulder, holds out against, adjusts with locking nut with ring flange is inside and outside; The big spacer of spindle encoder and a pair of angular contact ball bearing, cog shape belt wheel is fixed on the support with end cap, and the profile of tooth belt wheel of profile of tooth belt wheel and rear-end of spindle is transmission in 1: 1 numeration.
2, single main shaft main servo according to claim 1 mechanism, it is characterized in that waterproofing design: design seal groove and backwater hole on the ring flange, locking nut outer shroud design water dumping groove, design backwater hole on the waterproof ring flange, ring flange outside design specialized protective cover, front-end of spindle is designed to concentric ladder platform, and dual water dumping groove is arranged.
3, single main shaft main servo according to claim 1 mechanism, it is characterized in that the bearing clearance adjustment: preceding supporting leans against 40 degree angular contact thrust ball bearing outer shrouds on the main spindle box body opening shoulder away from spindle nose one side, interior ring is close to spacer, locks by locking nut; Close spindle nose one side of preceding supporting is adjusted also locking of czermak space in the Biserial cylindrical roller bearing with special-purpose locking nut, holds out against the Biserial cylindrical roller bearing outer shroud with the ring flange of being with seal groove, adds the waterproof ring flange; Increase dottle pin between the thrust bearing of front end and the roller bearing, outer shroud one side of rear bearing is positioned on the main shaft casing rear orifice shoulder, and opposite side holds out against outer race with ring flange, and interior ring holds out against with former and later two spacers, and the bearing clearance is adjusted with the twin-lock jack panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202196011U CN201346630Y (en) | 2008-11-21 | 2008-11-21 | Main servo mechanism of single main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202196011U CN201346630Y (en) | 2008-11-21 | 2008-11-21 | Main servo mechanism of single main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201346630Y true CN201346630Y (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202196011U Expired - Fee Related CN201346630Y (en) | 2008-11-21 | 2008-11-21 | Main servo mechanism of single main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201346630Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814510A (en) * | 2012-09-22 | 2012-12-12 | 无锡华联精工机械有限公司 | Main shaft structure of circular-seam back-chipping edge milling machine |
| CN102950317A (en) * | 2012-11-02 | 2013-03-06 | 无锡华联科技集团有限公司 | Toothed plate double surface groove edge milling machine milling head mechanism |
| CN102979873A (en) * | 2012-12-04 | 2013-03-20 | 无锡京华重工装备制造有限公司 | Variable-speed transmission mechanism for vertical lathe |
| CN111515417A (en) * | 2020-04-30 | 2020-08-11 | 南京众得利自动化机械有限公司 | Built-in main shaft structure capable of adjusting bearing clearance |
-
2008
- 2008-11-21 CN CNU2008202196011U patent/CN201346630Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814510A (en) * | 2012-09-22 | 2012-12-12 | 无锡华联精工机械有限公司 | Main shaft structure of circular-seam back-chipping edge milling machine |
| CN102950317A (en) * | 2012-11-02 | 2013-03-06 | 无锡华联科技集团有限公司 | Toothed plate double surface groove edge milling machine milling head mechanism |
| CN102979873A (en) * | 2012-12-04 | 2013-03-20 | 无锡京华重工装备制造有限公司 | Variable-speed transmission mechanism for vertical lathe |
| CN102979873B (en) * | 2012-12-04 | 2015-05-20 | 无锡京华重工装备制造有限公司 | Variable-speed transmission mechanism for vertical lathe |
| CN111515417A (en) * | 2020-04-30 | 2020-08-11 | 南京众得利自动化机械有限公司 | Built-in main shaft structure capable of adjusting bearing clearance |
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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: 20091118 Termination date: 20141121 |
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| EXPY | Termination of patent right or utility model |