CN101633120B - Double-division auxiliary static-pressure bearing and turning worktable of machine tool - Google Patents
Double-division auxiliary static-pressure bearing and turning worktable of machine tool Download PDFInfo
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- CN101633120B CN101633120B CN2009103054801A CN200910305480A CN101633120B CN 101633120 B CN101633120 B CN 101633120B CN 2009103054801 A CN2009103054801 A CN 2009103054801A CN 200910305480 A CN200910305480 A CN 200910305480A CN 101633120 B CN101633120 B CN 101633120B
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Abstract
The invention relates to a double-division auxiliary static-pressure bearing and turning worktable of a machine tool, comprising a box body, a supporting ring, a circular ring pressure plate, a mandrel, a driving worm, a damping worm, a worm wheel and a table top, wherein the supporting ring is fixedly arranged on the upper end surface of the box body, one end of the mandrel is inserted into a central through hole of the supporting ring and connected with the table top into a whole, the circular ring pressure plate is arranged between the table top and a mandrel contact surface, oil grooves which are communicated with an external pressure oil pipe are evenly distributed on contact surfaces among the supporting ring, the table top, the mandrel and the circular ring pressure plate, and an oil film with a thickness of 2-4 micrometers is quickly and evenly generated between two turning surfaces which are in mutual contact by regulating oil pressure in the oil grooves so as to support and lubricate the turning surfaces. The double-division auxiliary static-pressure bearing and turning worktable has reasonable and simple structure, smooth running, high rotating speed, good rigidity, low exotherm, good precision maintenance and reliable operation, is easy to process and manufacture, can obviously increase the processing precision of workpieces and is suitable for being matched with different types of gear hobbing machines.
Description
Technical field
The present invention relates to a kind of lathe double-division auxiliary rotary table, be meant a kind of lathe double-division auxiliary static-pressure bearing and turning worktable especially.
Background technology
Tradition gear-hobbing machine rotary table generally adopts: the centripetal thrust force roller bearing with sliding bearing cooperate realize mandrel axially, radial location and revolution support.See accompanying drawing 1, traditional gear-hobbing machine rotary table comprises casing 2, support ring 8, mandrel 1, worm gear 5, active worm screw 6, damping worm screw 7, adjusting garden ring 4, table top 9, centripetal thrust force roller bearing 10, sliding bearing 3; Described support ring 8 is installed on the casing 2; Described worm gear 5 is fixed on the mandrel 1; Described active worm screw 6, damping worm screw 7 are installed in the casing and mesh with described worm gear 5; One table top 9 is installed on the described mandrel 1 and is in casing 2 upper surfaces; Described mandrel 1 upper end excircle is provided with centripetal thrust force roller bearing 10 and realizes the radial location of mandrel 1 upper end with described support ring 8; Described mandrel 1 lower end is a cone, which is provided with described sliding bearing 3 and centripetal thrust force roller bearing 10, regulate described sliding bearing 3 and the position of centripetal thrust force roller bearing 10 on described mandrel 1 lower end cone by the adjusting garden ring 4 of being located at described mandrel 1 bottom, realize the axial location and the radial location of mandrel 1; The rotary table of this structure, though have rational in infrastructure, advantage of high precision, but because the existing defective of circular cone sliding bearing structure itself, in the use, the circular cone sliding bearing abrasion is big, the retentivity of temperature rise, precision is poor, causes the complete machine machining accuracy to reduce, and has influence on the precision of Gear Processing.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art and provide a kind of simple and reasonable, processing and manufacturing easily, operate steadily, lathe double-division auxiliary static-pressure bearing and turning worktable that precision stability is good.
A kind of lathe double-division auxiliary static-pressure bearing and turning worktable of the present invention, comprise casing, support ring, the garden ring-shaped pressuring plate, mandrel, the active worm screw, the damping worm screw, worm gear, table top, described support ring is fixedly mounted on the upper surface of casing, described worm gear set is contained in an end of described mandrel, the other end of described mandrel is inserted in the central through hole of described support ring and by screw and table top and is connected as a single entity, be provided with a circle garden ring groove between described table top and the mandrel contact-making surface, the garden ring-shaped pressuring plate of fixedlying connected with described support ring is installed in the described groove, described active worm screw, the damping worm screw meshes in casing and with described worm gear by bearings, be evenly equipped with 4-20 oil groove that is communicated with external pressure oil pipe on described support ring and the described table top contact-making surface, be evenly equipped with the oil groove that 4-20 external pressure oil pipe is communicated with on described support ring and the described mandrel contact-making surface, be evenly equipped with the oil groove that the individual external pressure oil pipe of 4-20 is communicated with on described support ring and the described garden ring-shaped pressuring plate contact-making surface.
Among the present invention, described external pressure oil pipe is made up of adjustable pressure oil inlet pipe and adjustable pressure flowline.
The present invention is owing to adopt said structure, between the surface of revolution of support ring, mandrel, table top, garden ring-shaped pressuring plate, a plurality of oil grooves are set, by regulating the oil pressure in the oil groove, make and evenly produce the oil film of thickness between two surfaces of revolution that are in contact with one another rapidly, on the one hand, table top is floated with respect to support ring is upwards micro-at 2～4 μ m, utilize oil film to bear axial load and form hydrostatic bearing, on the other hand, form oil film between garden ring-shaped pressuring plate and the mandrel upper surface, utilize oil film to bear axial load; In addition, between the cylindrical of the endoporus garden anchor ring of support ring and mandrel, produce oil film and form hydrostatic bearing, reach effect at the radial support mandrel.Effectively avoided the direct contact between the surface of revolution of support ring, mandrel, table top, garden ring-shaped pressuring plate; Because the formed oil film thickness of static pressure oil at 2～4 μ m, when realizing lubricated and reducing rubbing action, has increased the precision and the stability of workbench greatly.In sum, the present invention is simple and reasonable, processing and manufacturing is easy, operate steadily, rotating speed height, good rigidly, temperature rise is low, precision stability is good, can significantly improve the machining accuracy of workpiece, and reliable operation is suitable for and the supporting use of the gear-hobbing machine of various models.
Description of drawings
Accompanying drawing 1 is traditional gear-hobbing machine rotary table structural representation.
Accompanying drawing 2 is structural representation of the present invention.
Among the figure: 1--mandrel, 2--casing, 3---sliding bearing, the outspoken big belly two of 4 reed Gu?--worm gear, 6--be worm screw, 7--damping worm screw, 8--support ring, 9--table top, 10--roller bearing, 13---garden ring-shaped pressuring plate, 14---pressure oil pipe initiatively.
The specific embodiment
Referring to accompanying drawing 2, the present invention---a kind of lathe double-division auxiliary static-pressure bearing and turning worktable, comprise casing 2, support ring 8, mandrel 1, active worm screw 6, damping worm screw 7, worm gear 5, table top 9, described support ring 8 is fixedly mounted on the upper surface of casing 2, described worm gear 5 is sleeved on an end of described mandrel 1, the other end of described mandrel 1 is inserted in the central through hole of described support ring 8 and by screw and table top 9 and is connected as a single entity, be provided with a circle garden ring groove between described table top 9 and mandrel 1 contact-making surface, the garden ring-shaped pressuring plate 13 of fixedlying connected with described support ring 8 is installed in the described groove, described active worm screw 6, damping worm screw 7 meshes in casing 2 and with described worm gear 5 by bearings, be evenly equipped with 4-20 oil groove 15 that is communicated with external pressure oil pipe 14 on described support ring 8 and described table top 9 contact-making surfaces, be evenly equipped with 4-20 oil groove 16 that is communicated with external pressure oil pipe 14 on described support ring 8 and described mandrel 1 contact-making surface, be evenly equipped with the individual oil groove 17 that is communicated with external pressure oil pipe 14 of 4-20 on described support ring 8 and described garden ring-shaped pressuring plate 13 contact-making surfaces; Described external pressure oil pipe 14 is made up of adjustable pressure oil inlet pipe and adjustable pressure flowline.
Claims (2)
1. lathe double-division auxiliary static-pressure bearing and turning worktable, comprise casing, support ring, mandrel, the active worm screw, the damping worm screw, worm gear, table top, described support ring is fixedly mounted on the upper surface of casing, described worm gear set is contained in an end of described mandrel, the other end of described mandrel is inserted in the central through hole of described support ring and by screw and table top and is connected as a single entity, be provided with a circle ring groove between described table top and the mandrel contact-making surface, the annulus pressing plate of fixedlying connected with described support ring is installed in the described groove, described active worm screw, the damping worm screw meshes in casing and with described worm gear by bearings, it is characterized in that: be evenly equipped with 4-20 first oil groove that is communicated with external first pressure oil pipe on described support ring and the described table top contact-making surface, be evenly equipped with 4-20 second oil groove that is communicated with external second pressure oil pipe on described support ring and the described mandrel contact-making surface, be evenly equipped with individual the 3rd oil groove that is communicated with external the 3rd pressure oil pipe of 4-20 on described support ring and the described annulus pressing plate contact-making surface.
2. a kind of lathe double-division auxiliary static-pressure bearing and turning worktable according to claim 1 is characterized in that: described external pressure oil pipe is made up of adjustable pressure oil inlet pipe and adjustable pressure flowline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103054801A CN101633120B (en) | 2009-08-11 | 2009-08-11 | Double-division auxiliary static-pressure bearing and turning worktable of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103054801A CN101633120B (en) | 2009-08-11 | 2009-08-11 | Double-division auxiliary static-pressure bearing and turning worktable of machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101633120A CN101633120A (en) | 2010-01-27 |
| CN101633120B true CN101633120B (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103054801A Active CN101633120B (en) | 2009-08-11 | 2009-08-11 | Double-division auxiliary static-pressure bearing and turning worktable of machine tool |
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| CN (1) | CN101633120B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102248227B (en) * | 2011-06-14 | 2012-11-21 | 湖南中大创远数控装备有限公司 | Machine tool for machining spiral bevel gear |
| CN102990164B (en) * | 2012-12-14 | 2014-12-03 | 天津精诚机床股份有限公司 | Numerical control gear grinding machine |
| CN102962479A (en) * | 2012-12-14 | 2013-03-13 | 天津精诚机床股份有限公司 | Workpiece box for gear grinding machine |
| CN115156972B (en) * | 2022-07-18 | 2024-01-26 | 青岛科技大学 | Hydrostatic support macro-micro double-drive feeding system |
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2009
- 2009-08-11 CN CN2009103054801A patent/CN101633120B/en active Active
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| Publication number | Publication date |
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| CN101633120A (en) | 2010-01-27 |
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