CN2734378Y - Numerical control machine with three-support main shaft structure - Google Patents
Numerical control machine with three-support main shaft structure Download PDFInfo
- Publication number
- CN2734378Y CN2734378Y CN 200420082689 CN200420082689U CN2734378Y CN 2734378 Y CN2734378 Y CN 2734378Y CN 200420082689 CN200420082689 CN 200420082689 CN 200420082689 U CN200420082689 U CN 200420082689U CN 2734378 Y CN2734378 Y CN 2734378Y
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- Prior art keywords
- main shaft
- bearing
- chuck
- tank body
- control machine
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Abstract
The utility model discloses a numerical control machine with three-support main shaft structure. The two-support structure of the main shaft of the machine is changed to a three-support structure. The distance of the three supports is reasonably allocated. The rigidity, the bearing capacity and the vibration resistance performance of the main shaft are increased. In order to decrease the clearance when a bearing is installed, the front bearing of the main shaft is directly arranged on the tank body of the main shaft and a bearing shell is abolished. A gear is arranged between the front bearing and a middle bearing. The model alters the stress way in which the gear presents a cantilever beam in the prior art. A chuck and the main shaft are connected by adopting a short cone connection that is a closed connection. The model rejects the complicated hot shell process engineering adopted by the old connection of the chuck and the main shaft. The original separated structure of the tank body of the main shaft is changed to the integrated structure. The place of the connection of the rear end of the tank body and a lathe is added with two clamp plates connected by a smooth made screw bolt. The utility model increases the rigidity of the tank body and the anti-overturn ability of the tank body.
Description
Technical field
The utility model relates to the Digit Control Machine Tool in the machine cut processing technique field, relates in particular to the Digit Control Machine Tool of the high-precision three supporting spindle structures of a kind of heavy duty.
Background technology
To be lathe directly drive that workpiece or cutter cut man-hour and the surface forms the rotating shaft of motion adding to machine tool chief axis.At present, main shaft adopts the bearing collocation type of two supportings, and two ends are all used 3182100 conical bore Biserial cylindrical roller bearings before and after the main shaft, and the bearing accuracy grade is respectively D, E level.As shown in Figure 1, 2, it comprises rear bearing 1, main shaft 2, bearing holder (housing, cover) 3, fore bearing 4, gear wheel 5, chuck 6 and main spindle box 7, fore bearing 4 is installed on the main spindle box 7 by bearing block, rear bearing 1 is made of two 8000 single direction thrust ball bearings, by nut and casing locking.Chuck 6 is with main shaft 2 cylindricals location, is fastened on the main shaft 2 with the form of hot jacket.Gear wheel 5 is installed on chuck 6 end faces with bolt and taper bolt connection by end face cylindrical location, forms spindle assemblies.The position of gear wheel 5 on main shaft is the force way of cantilever beam.As shown in Figure 2, the main shaft casing is an isolating construction, and promptly main spindle box is made the separate type casing.After spindle assemblies is packed casing into during assembling, will go up lower box with bolt and taper bolt again and connect.Its weak point is that bearing accuracy is low, and the gap is big, because the position of gear wheel 5 on main shaft 2 is the force way of cantilever beam and the main shaft casing of separate type, makes the lifting capacity of lathe and resistance to shock poor.
Summary of the invention
The purpose of this utility model is in order to overcome existing defective in the existing Digit Control Machine Tool, the Digit Control Machine Tool of the three supporting spindle structures that a kind of load-carrying is big, precision is high to be provided.
The technical scheme that the utility model adopted is: a kind of Digit Control Machine Tool of three supporting spindle structures, comprise rear bearing, main shaft, fore bearing, gear wheel, chuck, main spindle box, be characterized in, middle part at main shaft is equipped with middle (center) bearing, constitute three supporting spindle structures with forward and backward bearing, the spacing of fore bearing and chuck rear end be the ratio of elongation and fore bearing and the spacing of middle (center) bearing of working end near 1/3, gear wheel places between middle (center) bearing and the fore bearing, fore bearing directly is contained on the casing of main spindle box, and main spindle box is a monolithic construction.
The spacing of fore bearing and chuck rear end is chosen for 178MM, and the spacing of fore bearing and middle (center) bearing is 530MM.Main shaft is connected with chuck by short awl.The main spindle box rear end is provided with by bolted pressing plate.
The beneficial effects of the utility model are: machine tool chief axis changes three-support structure into by two supporting structures, the distance of three supportings of reasonable distribution, improve rigidity, bearing capacity, the resistance to shock of main shaft, gap when installing for reducing bearing, main spindle front bearing is directly installed on the main shaft casing, cancels original bearing holder (housing, cover).Gear wheel places between fore bearing and the middle (center) bearing, and the gear wheel stressing conditions improves, and gear wheel presents the force way of cantilever beam in the change prior art.Being connected of chuck and main shaft adopts short awl to connect, i.e. seamless connectivity mode has been abandoned chuck in the past is connected the employing complexity with main shaft hot cover process technology.Main spindle box is by the original split type monolithic construction that changes into, and the place that box back is connected with lathe has increased by two and used up the bolted pressing plate of system, has both increased gear housing rigidity, has increased the anti-ability of overturning of casing again.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is two supporting spindle structural representations in the prior art.
Fig. 2 is existing separate type body structure schematic diagram.
Fig. 3 is a three-support structure schematic diagram of the present utility model.
Fig. 4 is an integral one-piece mainshaft body structure schematic diagram of the present utility model.
The specific embodiment
Shown in Figure 3, a kind of Digit Control Machine Tool of three supporting spindle structures, comprise rear bearing 1, main shaft 2, fore bearing 4, gear wheel 5, chuck 6, main spindle box 7 is characterized in, be equipped with middle (center) bearing 8 at the middle part of main shaft 2, with preceding, rear bearing 4,1 constitutes three supporting spindle structures, in order to improve the rigidity of main shaft, bearing capacity, resistance to shock, spacing I to fore bearing 4 and chuck 6 rear ends is the elongation of working end, fore bearing 4 carries out reasonable disposition with the spacing of middle (center) bearing 8, gets L=530MM, I=178MM, ratio between two I/L less than or near 1/3, gear wheel 5 places between middle (center) bearing 8 and the fore bearing 4, and no longer as the sort of stressing conditions of cantilever beam, stressing conditions improves the stressing conditions of gear wheel.Main shaft 2 is by being connected with chuck 6 by short awl.Be seamless connectivity, abandoned in the past chuck is connected the complicated hot cover process technology that adopts with main shaft.
Shown in Figure 1, fore bearing 4 directly is contained on the casing of main spindle box 7, cancels the bearing holder (housing, cover) 3 in the existing two supporting spindle structures.By shown in Figure 4, main spindle box 7 is a monolithic construction.Main spindle box 7 rear ends are equipped with by bolted two block pressur plates 9, except that having increased gear housing rigidity, have also increased the anti-ability of overturning of casing.
Claims (4)
1. the Digit Control Machine Tool of a supporting spindle structure, comprise rear bearing (1), main shaft (2), fore bearing (4), gear wheel (5), chuck (6), main spindle box (7), it is characterized in that, the middle part of described main shaft (2) is equipped with middle (center) bearing (8), with preceding, rear bearing (4,1) constitute three supporting spindle structures, the spacing I of fore bearing (4) and chuck (6) rear end and fore bearing (4) are I/L≤1/3 with the ratio of the spacing L of middle (center) bearing (8), and described gear wheel (5) places between middle (center) bearing (8) and the fore bearing (4), described fore bearing (4) directly is contained on the casing of main spindle box (7), and described main spindle box (7) is an overall structure.
2. the Digit Control Machine Tool of three supporting spindle structures according to claim 1 is characterized in that, described fore bearing (4) is 178MM with the spacing I of chuck (6) rear end, and fore bearing (4) is 530MM with the spacing L of middle (center) bearing (8).
3. the Digit Control Machine Tool of three supporting spindle structures according to claim 1 is characterized in that, described main shaft (2) is connected with chuck (6) by short awl (10).
4. the Digit Control Machine Tool of three supporting spindle structures according to claim 1 is characterized in that, described main spindle box (7) rear end is provided with by bolted pressing plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082689 CN2734378Y (en) | 2004-09-09 | 2004-09-09 | Numerical control machine with three-support main shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082689 CN2734378Y (en) | 2004-09-09 | 2004-09-09 | Numerical control machine with three-support main shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2734378Y true CN2734378Y (en) | 2005-10-19 |
Family
ID=35264260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420082689 Expired - Fee Related CN2734378Y (en) | 2004-09-09 | 2004-09-09 | Numerical control machine with three-support main shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2734378Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804465A (en) * | 2010-03-31 | 2010-08-18 | 桂林电子科技大学 | Multi-scale wavelet antivibration design method of high-speed main shaft of machine tool |
| CN107457620A (en) * | 2017-06-20 | 2017-12-12 | 广东工业大学 | A kind of split type double flange support meanss of rotary ultrasonic transducer |
| CN108393692A (en) * | 2018-03-06 | 2018-08-14 | 吉林省金沙数控机床股份有限公司 | A kind of automatic assembly line for processing disc-shaped workpiece |
-
2004
- 2004-09-09 CN CN 200420082689 patent/CN2734378Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804465A (en) * | 2010-03-31 | 2010-08-18 | 桂林电子科技大学 | Multi-scale wavelet antivibration design method of high-speed main shaft of machine tool |
| CN107457620A (en) * | 2017-06-20 | 2017-12-12 | 广东工业大学 | A kind of split type double flange support meanss of rotary ultrasonic transducer |
| CN107457620B (en) * | 2017-06-20 | 2019-06-14 | 广东工业大学 | A kind of split type double flange support devices of rotary ultrasonic energy converter |
| CN108393692A (en) * | 2018-03-06 | 2018-08-14 | 吉林省金沙数控机床股份有限公司 | A kind of automatic assembly line for processing disc-shaped workpiece |
| CN108393692B (en) * | 2018-03-06 | 2020-09-11 | 吉林省金沙数控机床股份有限公司 | Automatic production line for machining disc-shaped workpieces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051019 Termination date: 20120909 |