CN103551866A - Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable - Google Patents
Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable Download PDFInfo
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- CN103551866A CN103551866A CN201310536099.2A CN201310536099A CN103551866A CN 103551866 A CN103551866 A CN 103551866A CN 201310536099 A CN201310536099 A CN 201310536099A CN 103551866 A CN103551866 A CN 103551866A
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- guide rail
- worktable
- main shaft
- constant
- automatic centering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention relates to a constant-current static-pressure rolling composite guide rail and automatic centering technological worktable. A worktable base is provided with a worktable, a main shaft is arranged in the middle part of the worktable base and the worktable, a guide rail plate is arranged between the worktable base and the worktable, and the lower part of the main shaft is provided with a set of single-direction thrusting ball bearing and a set of thrusting joint bearing facilitating the automatic centering of the main shaft of the worktable. By adequately utilizing the rolling composite guide rail technology, the preload constant-current (constant-voltage) static-pressure film floating technology and the automatic centering technology, the weight of the worktable and a workpiece can be overcome by the constant-current static-pressure supporting force of the main guide rail, the floating gap of the main guide rail is limited by a rolling pair guide rail, an uniform oil membrane is generated among friction surfaces of the main guide rail, the oil membrane has certain rigidness, the guide rail has double advantages of a static-pressure guide rail and a rolling guide rail and has the advantages such as heavy load, large rigidness, high stability, uniformity in film floatation, small fluctuation of a film and the like; and the automatic centering technology overcomes the weakness that the original worktable is unstable to center.
Description
Technical field
The present invention relates to Computerized Numerical Control processing technology field, relate in particular to a kind of NC vertical lathe Working table structure.
Background technology
NC vertical lathe workbench and main axle structure are one of functional parts of Digit Control Machine Tool most critical.The design of its structure directly affects Digit Control Machine Tool performance, precision with manufacture.In China, the list that has a lot of manufacturer production, column numerical controlled vertical lathe is in the structure of former common vertical lathe, to correct one's mistakes, the design of this table slide structure, see Fig. 1, mainly by workbench 2, table base 1, guide-rail plate 3, main shaft 4, radially adopt two cover double row centripetal cylindrical roller bearings (tapering 1:12) centering to support, guide rail adopts dynamic pressure, static pressure or dynamic and static pressure guide rail mode, main shaft adopts long main axle structure, this design lacks key Design theory and technology, its defect shows highlightedly: workbench is without pretension, owing to laying particular stress on, during work table rotation, cause oil film fluctuation, caused workbench in service have shake a phenomenon, thereby make workpiece emersion wave Slippage, the defects such as machining accuracy low (can reach IT8 level).
Summary of the invention
The problems referred to above that exist in order to overcome traditional NC vertical lathe workbench and main axle structure, the invention provides a kind of constant flow static pressure skid composite guide rails and add self-centering technical work platform.
The technical scheme that the present invention adopted is for achieving the above object: constant flow static pressure skid composite guide rails adds self-centering technical work platform, table base is provided with workbench, main shaft is positioned at table base and workbench middle part, between table base and workbench, be provided with guide-rail plate, the bottom of main shaft is provided with a set of single direction thrust ball bearing and a set of self centering thrust articulated bearing of workbench main shaft that makes.
Described main shaft diameter is to the two cover double row centripetal cylindrical roller bearings that are provided with centering support.
Described main shaft bottom is provided with to adjust guide rail pretension disk spring.
Described main the tip of the axis is installed encoder.
Constant flow static pressure skid composite guide rails of the present invention adds self-centering technical work platform, take full advantage of skid composite guide rails technology, preload constant current (constant voltage) static pressure film and float technology, self-centering technology, realized the weight that is overcome workbench and workpiece by main guide rail constant flow static pressure support force, by rolling pair guide rail, limited the gap of floating of main guide rail, make to produce between main guide rail rubbing surface uniform oil film, and make oil film form certain rigidity, this guide rail possesses the two-fold advantage of hydrostatic slideway and rolling guide, there is load weight, rigidity is large, stability is high, film floats evenly, the advantages such as film fluctuation is little, self-centering technology has overcome the former workbench unstable defect of feeling relieved, and has formed fairly perfect workbench, the main axle structure module of function.
Accompanying drawing explanation
Fig. 1 is existing NC vertical lathe Working table structure figure.
Fig. 2 is that constant flow static pressure skid composite guide rails of the present invention adds self-centering technical work platform structure chart.
Fig. 3 is that constant flow static pressure skid composite guide rails of the present invention adds self-centering technical work platform static pressure and floats hydraulic schematic diagram.
The specific embodiment
Constant flow static pressure skid composite guide rails of the present invention adds self-centering technical work platform structure as shown in Figure 2, table base 1 is provided with workbench 2, main shaft 4 is positioned at table base 1 and workbench 2 middle parts, between table base 1 and workbench 2, be provided with guide-rail plate 3, the bottom of main shaft 1 is provided with a set of single direction thrust ball bearing 8 and a set of self centering thrust articulated bearing 7 of workbench main shaft that makes.This structure still keeps original main axle structure, radially adopt two cover double row centripetal cylindrical roller bearings (tapering 1:12) centering to support, bottom at main shaft, increased a set of single direction thrust ball bearing 8, and increased a set of oscillating bearing 7 and made workbench main shaft 1 self-centering, meanwhile, designed disk spring 6 in order to adjust guide rail pretension.The design of this structure, takes full advantage of skid composite guide rails technology, preloads constant current (constant voltage) static pressure film and float technology, self-centering technology.Realized the weight that is overcome workbench and workpiece by main guide rail constant flow static pressure support force, by rolling pair guide rail, limited the gap of floating of main guide rail, make to produce between main guide rail rubbing surface uniform oil film, and make oil film form certain rigidity, thereby applied preloading constant flow static pressure film, float the skid composite guide rails technology that adds.This guide rail possesses the two-fold advantage of hydrostatic slideway and rolling guide, has the advantages such as load is heavy, rigidity is large, stability is high, film floats evenly, film fluctuation is little; Self-centering technology has overcome the former workbench unstable defect of feeling relieved, and has formed fairly perfect workbench, the main axle structure module of function.
Static pressure floats hydraulic principle as shown in Figure 3, on hydraulic workstation, has designed independent hydraulic system, provides specially workbench to float, and is not subject to the impact of external environment.
Main motor adopts AC servo motor, or with alternating-current variable frequency motor, encoder 6 has been installed on motor shaft, AC servo driver or the AC converter of select tape PG socket, make main motor complete the permanent moment of torsion of low speed, the running of high speed constant power, guaranteed the function of lathe heavy cut when low-speed running.
At main the tip of the axis, design and installation encoder 5, realized workbench main shaft 1:1 detected and controls function, guaranteed that lathe possesses the screw thread of choosing function.
The present invention is described by embodiment, and those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present invention, can modify to adapt to concrete situation and material and can not depart from the spirit and scope of the present invention these features and embodiment.Therefore, the present invention is not subject to the restriction of specific embodiment disclosed herein, and the embodiment within the scope of all the application's of falling into claim belongs to protection scope of the present invention.
Claims (4)
1. constant flow static pressure skid composite guide rails adds self-centering technical work platform, it is characterized in that: table base (1) is provided with workbench (2), main shaft (4) is positioned at table base (1) and workbench (2) middle part, between table base (1) and workbench (2), be provided with guide-rail plate (3), the bottom of main shaft (1) is provided with a set of single direction thrust ball bearing (8) and a set of self centering thrust articulated bearing of workbench main shaft (7) that makes.
2. constant flow static pressure skid composite guide rails according to claim 1 adds self-centering technical work platform, it is characterized in that: described main shaft (1) is radially provided with the two cover double row centripetal cylindrical roller bearings that centering is supported.
3. constant flow static pressure skid composite guide rails according to claim 1 adds self-centering technical work platform, it is characterized in that: described main shaft (1) bottom is provided with to adjust guide rail pretension disk spring (6).
4. constant flow static pressure skid composite guide rails according to claim 1 adds self-centering technical work platform, it is characterized in that: the end of described main shaft (1) is installed encoder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536099.2A CN103551866A (en) | 2013-11-04 | 2013-11-04 | Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536099.2A CN103551866A (en) | 2013-11-04 | 2013-11-04 | Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable |
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| Publication Number | Publication Date |
|---|---|
| CN103551866A true CN103551866A (en) | 2014-02-05 |
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| CN201310536099.2A Pending CN103551866A (en) | 2013-11-04 | 2013-11-04 | Constant-current static-pressure rolling composite guide rail and automatic centering technological worktable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275905A (en) * | 2021-07-26 | 2021-08-20 | 山东交通职业学院 | Hydraulic unloading structure for upright column of large-scale processing machine tool |
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| CN202766954U (en) * | 2012-07-13 | 2013-03-06 | 柳工无锡路面机械有限公司 | Novel hinged steering shaft assembly structure of road roller |
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2013
- 2013-11-04 CN CN201310536099.2A patent/CN103551866A/en active Pending
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| JP2009208166A (en) * | 2008-02-29 | 2009-09-17 | Komatsu Ntc Ltd | Spindle unit of machine tool |
| CN201815876U (en) * | 2010-09-29 | 2011-05-04 | 中捷机床有限公司 | Open-type static pressure rotary worktable controlling floating degree |
| CN102039527A (en) * | 2010-09-29 | 2011-05-04 | 中捷机床有限公司 | Open-type static pressure rotating table for controlling floating degree and manufacturing method thereof |
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| CN202766954U (en) * | 2012-07-13 | 2013-03-06 | 柳工无锡路面机械有限公司 | Novel hinged steering shaft assembly structure of road roller |
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|---|---|---|---|---|
| CN113275905A (en) * | 2021-07-26 | 2021-08-20 | 山东交通职业学院 | Hydraulic unloading structure for upright column of large-scale processing machine tool |
| CN113275905B (en) * | 2021-07-26 | 2021-09-28 | 山东交通职业学院 | Hydraulic unloading structure for upright column of large-scale processing machine tool |
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