CN104353848B - The assembling structure of headstock in vertical machining center - Google Patents
The assembling structure of headstock in vertical machining center Download PDFInfo
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- CN104353848B CN104353848B CN201410579255.8A CN201410579255A CN104353848B CN 104353848 B CN104353848 B CN 104353848B CN 201410579255 A CN201410579255 A CN 201410579255A CN 104353848 B CN104353848 B CN 104353848B
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- spindle box
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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
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
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- Auxiliary Devices For Machine Tools (AREA)
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Abstract
The assembling structure of headstock in vertical machining center, including the main shaft connecting plate of main spindle box, split-type structural, is divided into main spindle box connecting plate and spindle servo electric machine connecting plate；Main spindle box connecting plate centre bit installs manhole, and the aperture of the upper and lower end position of manhole is all higher than the aperture of intermediate position；Spindle servo electric machine connecting plate is cylinder, and centre bit installs the manhole being coaxial therewith, and outer peripheral face is set to step shape, and top external diameter is less than lower outer diameter；The central circular side face of main spindle box connecting plate manhole and spindle servo electric machine connecting plate lower end periphery face interference fit.It can adjust the assembly precision between main shaft connecting plate and main spindle box and main shaft connecting plate and main shaft respectively, significantly reduce the coaxiality error after main shaft assembles with spindle servo electric machine, the speed of mainshaft brings up to 20,000 turns, the service life of spindle servo electric machine is not made a significant impact, main shaft noise decibel value is obviously reduced, and main spindle box Vibration Condition is obviously improved.
Description
Technical field
The invention belongs to the technical field of machine tooling machinery, be specifically related to the assembling structure of headstock in vertical machining center.
Background technology
Main spindle box is the important component part of machining center, and one end of main spindle box coordinates with column, enables main spindle box column relatively to slide, and the other end is free end, and is provided with main shaft, spindle servo electric machine on this end.
Current main spindle box is foundry goods molding, and main spindle box upper surface is reserved and is provided with the slotted eye installing spindle servo electric machine.The mode taked at present is one integrated main shaft installing plate of fixed installation in this slotted eye, realizes being connected of main spindle box and spindle servo electric machine.This kind of fit system is all significantly high to the requirement on machining accuracy of main spindle box and main shaft installing plate, and requires also significantly high to the assembly precision of the two.By the restriction of current assembly technology, main shaft is relatively big with the amplitude interval of the assembling coaxial accuracy of spindle servo electric machine, makes machine spindle speed be restricted.The high rotating speed lathe that presently, there are, because assembly precision problem, often results in spindle servo electric machine and damages.
At present, main spindle box and column are that the contact surface of hard rail respective outer side edges is face contact form by hard rail respective outer side edges, and during relative movement, frictional force is relatively big, drive big energy-consuming and cabinet surface wear is serious, need to often change, increase production cost.Main spindle box is arranged on column, form cantilever design, and main shaft is arranged on the free end of main spindle box, this free end deviates from the link of main spindle box and column, the weight of the servo drive motor of main spindle box and main shaft is all very big, main spindle box free end will bear very big active force, what had a strong impact on cantilever attachment structure lower pillar stand and main spindle box coordinates reliability, cause that the active force that in the course of processing, main spindle box is subject to is unstable, main shaft job insecurity, the course of processing can produce vibration, machining accuracy it is impossible to ensure that, while also result in hard rail rail level abrasion inequality, increase abrasion and change the frequency.Cantilever design and face contact track, cause that different feed speed lower main axis case two ends stress is unstable, and particularly during low-speed heavy cut, spindle vibration clearly, has a strong impact on machining accuracy.
Summary of the invention
It is an object of the invention to provide the assembling structure of a kind of novel vertical machining center main spindle box, it, by changing the version of main shaft connecting plate, improves the coaxial precision of assembling, it is achieved under high rotary speed working, spindle servo electric machine runs well, and service life is unaffected.
This invention address that its technical problem is adopted the technical scheme that:
The assembling structure of headstock in vertical machining center, including main spindle box, column, main spindle box drives assembly, main shaft connecting plate, on main spindle box, its one end coordinated with column is provided with main spindle box mounted base, the center of main spindle box mounted base arranges main spindle box and drives connecting portion, described main spindle box drives connecting portion and described main spindle box to drive assembly to be connected, main shaft connecting plate is fixed on main spindle box, main spindle box is coordinated with spindle servo electric machine by main shaft connecting plate, described main shaft connecting plate is split-type structural, it is divided into main spindle box connecting plate and spindle servo electric machine connecting plate；Described main spindle box connecting plate is square, and its center is provided with manhole, and the aperture of the upper and lower end position of this manhole is all higher than the aperture of intermediate position, and described main spindle box connecting plate is fixed on described main spindle box；Described spindle servo electric machine connecting plate is cylinder, and heart position arranges the manhole being coaxial therewith wherein, and its outer peripheral face is set to step shape and top external diameter less than lower outer diameter；The central circular side face of manhole and described spindle servo electric machine connecting plate lower end periphery face interference fit on described main spindle box connecting plate.
Further, on described main spindle box connecting plate the axial dimension of manhole central circular side face less than the axial dimension of described spindle servo electric machine connecting plate lower end section.
Further, on column, its two vertical edges with main spindle box counterface are respectively provided with the boss of vertical extension, described boss is fixedly installed a line style track respectively, the groove of vertical extension it is respectively provided with at two vertical edges of described main spindle box mounted base end face, two grooves described in during assembling are corresponding with two boss on described column respectively, the width of described groove is not less than the width of described boss, in two described grooves, symmetry is fixedly installed guide runner, and described guide runner coordinates with corresponding line style track.
Further, the number of described guide runner is four, is respectively fixedly disposed at the upper/lower terminal position of described groove.
Further, the number of described guide runner is six, is respectively fixedly disposed at the upper/lower terminal position of described groove and the vertical center position of each groove.
The invention has the beneficial effects as follows:
(1) after existing main shaft connecting plate is set to split-type structural by it, the assembly precision between main shaft connecting plate and main spindle box and main shaft connecting plate and main shaft can be adjusted respectively, significantly reduce main shaft interval with the rigging error amplitude of spindle servo electric machine, the axiality of main shaft Yu spindle servo electric machine is controlled in only small scope, when realizing the main shaft High-speed machining up to 20,000 turns, the service life of spindle servo electric machine will not be made a significant impact.It is beneficial to installation, it is easy to ensure the quality of fit installed, by experiment contrast: the main shaft noise decibel value of split-type structural is obviously reduced, and main spindle box Vibration Condition is obviously improved, and processes the dimensional accuracy of parts and fineness increases.
(2) it connects by adopting line style track to substitute hard rail, improve main spindle box and move form relative to column, not only reduce friction effect power, and be able to ensure that under cantilever design state be fixed on main spindle box mounted base, the guide runner of lower end position is subject to basically identical frictional force, and then ensure that the size that different feed speed lower main axis case is subject to resistance is basicly stable, main spindle box feeding is obviously reduced and adds Oscillation Amplitude and the frequency in man-hour, improve the machining accuracy of complete machine tool.Six guide runners selected can improve the life-span of line style track and guide runner for the assembling structure of four guide runners, reduces cost.Because under the assembling structure of four guide runners, it is subject under the assembling structure of cantilever beam structure impact relatively six guide runners to become apparent from: the assembling structure lower main axis case assembling end of four guide runners is subject to double side acting power, i.e. upper end position guide runner tension and lower end position guide runner pressure experienced, they are with main spindle box self gravitation and the gravitational equilibrium of servo drive motor, the size of pulling force and pressure is suitable with overall gravity, the assembling structure lower main axis case assembling end of six guide runners is subject to three side active forces, centrally located guide runner can stable steering slide block tension or pressure, namely the active force of guide runner and line style track is reduced, reduce friction, extend the life-span of guide runner and line style track.When being processed, under the assembling structure of four guide runners, it is positioned at the active force that the guide runner of upper and lower end is subject to big relative to the residual quantity amplitude under they static state, under the assembling structure of six guide runners, two middle guide runners can balance the active force that the guide runner of upper and lower end is subject to, reduce they static and dynamically under residual quantity amplitude, reduce the cantilever beam structure impact on guide runner stress equalization, reduce the Vibration Condition of machining state lower main axis case, improve the machining accuracy of main shaft.
In a word, by changing the version of main shaft connecting plate, improve spindle servo electric machine with the assembling of main shaft coaxial precision, alleviate main spindle box vibration, it is beneficial to raising machining accuracy, simultaneously further through the matching track form changing main spindle box and column, slow down the cantilever beam structure impact on main spindle box Vibration Condition, improve life-span and the machining accuracy of track.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of headstock in vertical machining center mating part involved in the present invention；
Fig. 2 is headstock in vertical machining center mating part plan structure schematic diagram involved in the present invention；
Fig. 3 is the plan structure schematic diagram of main shaft connecting plate involved in the present invention:
Fig. 4 is the lateral cross section structural representation of Fig. 3；
In figure: 1 main spindle box, 2 columns, 3 main spindle boxes drive assembly, 4 main shaft connecting plates, 41 main spindle box connecting plates, 42 spindle servo electric machine connecting plates, 5 spindle servo electric machines, 6 main spindle box mounted base, 7 main spindle boxes to drive connecting portion, 8 line style tracks, 9 guide runners.
Detailed description of the invention
For ease of understanding technical scheme, below in conjunction with accompanying drawing, wherein involved technology contents is described further.
In the description of this invention, it should be noted that, term "left", "right", "front", "rear" " on ", D score, " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
As shown in Figures 1 to 4,
The assembling structure of headstock in vertical machining center, assembly 3, main shaft connecting plate 4 is driven including main spindle box 1, column 2, main spindle box, left end at main spindle box 1 is provided with main spindle box mounted base 6, the center of described main spindle box mounted base 6 arranges main spindle box and drives connecting portion 7, and described main spindle box drives connecting portion 7 and described main spindle box to drive assembly 3 to be connected.Described main shaft connecting plate 4 is fixed on main spindle box 1, and described main spindle box 1 is coordinated with spindle servo electric machine 5 by described main shaft connecting plate 4.
Described main shaft connecting plate 4 is split-type structural, is divided into main spindle box connecting plate 41 and spindle servo electric machine connecting plate 42.Described main spindle box connecting plate 41 is square, and its center is provided with manhole, and the aperture of the upper and lower end position of this manhole is all higher than the aperture of intermediate position, and the axis of manhole overlaps with the vertical line of described main spindle box connecting plate 41 center.It should be noted that the aperture difference at this place is realized by machining accuracy.Four corner locations of described main spindle box connecting plate 41 set assembling screw, and described main spindle box connecting plate 41 is bolted on described main spindle box 1.Described spindle servo electric machine connecting plate 42 is cylinder, and heart position arranges the manhole being coaxial therewith wherein, and its outer peripheral face is set to step shape, and top external diameter is less than lower outer diameter.The central circular side face of manhole and described spindle servo electric machine connecting plate 42 lower end periphery face interference fit on described main spindle box connecting plate 41.On described main spindle box connecting plate 41, the axial dimension of manhole central circular side face is less than the axial dimension of described spindle servo electric machine connecting plate 42 lower end section.As shown in Figure 3, Figure 4.
On column 2, it is respectively provided with the boss of vertical extension with two vertical edges (leading edge and the back edge) place of main spindle box 1 counterface (i.e. the right side of column 2), is fixedly installed a line style track 8 on described boss respectively.The groove of vertical extension it is respectively provided with at two vertical edges of described main spindle box mounted base 6 end face (for left side).Two grooves described in during assembling are corresponding with two boss on described column 2 respectively, and the width of described groove is not less than the width of described boss, and in two described grooves, symmetry is fixedly installed guide runner 9, and described guide runner 9 coordinates with corresponding line style track 8.
It connects by adopting line style track 8 to substitute hard rail, improve the fit form of the relative column 2 of main spindle box 1, not only reduce friction effect power, and be able to ensure that under cantilever design state be fixed on main spindle box mounted base 6, the guide runner 9 of lower end position is subject to basically identical frictional force, and then ensure that the size that different feed speed lower main axis case 1 is subject to resistance is basicly stable, main spindle box 1 feeding is obviously reduced and adds Oscillation Amplitude and the frequency in man-hour, improve the machining accuracy of complete machine tool.
The number of described guide runner 9 can be four, and now four guide runners 9 are respectively fixedly disposed at the upper/lower terminal position (i.e. the corner location of described main spindle box mounted base 6 left side) of described groove.Reduce the impact of cantilever beam structure for improving fiting effect, the number of described guide runner 9 can be six, and now guide runner 9 is respectively fixedly disposed at the upper/lower terminal position of described groove and the vertical center position of each groove, such as Fig. 1 simultaneously.
The assembling structure of six guide runners 9 selected can improve the life-span of line style track and guide runner for the assembling structure of four guide runners 9, reduces cost.Because under the assembling structure of four guide runners 9, it is subject under the assembling structure of cantilever beam structure impact relatively six guide runners 9 to become apparent from: namely assembling structure lower main axis case 1 left end of four guide runners 9 is subject to upper and lower double side acting power, i.e. upper end position guide runner 9 tension and lower end position guide runner pressure experienced, they gravitational equilibriums with main spindle box self gravitation and spindle servo electric machine 5.Now the size of pulling force and pressure is suitable with overall gravity.Assembling structure lower main axis case 1 left end of six guide runners 9 is subject to three side active forces, centrally located guide runner 9 can stable steering slide block 9 tension or pressure, namely reduce the active force of guide runner 9 and line style track 8, reduce friction, extend the life-span of guide runner 9 and line style track 8.When being processed, under the assembling structure of four guide runners 9, it is positioned at the active force that the guide runner 9 of upper and lower end is subject to big relative to the residual quantity amplitude under they static state, under the assembling structure of six guide runners 9, two middle guide runners 9 can balance the active force that the guide runner 9 of upper and lower end is subject to, reduce they static and dynamically under residual quantity amplitude, reduce the cantilever beam structure impact on guide runner 9 stress equalization, reduce the Vibration Condition of machining state lower main axis case 2, improve the machining accuracy of main shaft.
Adopting line style track 8 with under the fit form of guide runner 9, main spindle box 1 adopts casting structure: first determine the particular location of guide runner 9 according to concrete model, and form drawing draws making wooden model, and Wooden Pattern Making delivers casting after the assay was approved after completing.Casting process to take into full account its material, hardness requirement.After having cast, check and qualified deliver machining, it is noted that relevant dimensional accuracy and the accuracy of form and position in the course of processing.Machine and assemble after the assay was approved, it is noted that each guide runner 9 is fully contacted the left side of described main spindle box mounted base 6 in assembling process, it is to avoid assembling is fixing insecure and has wide arc gap.Meanwhile, the depth of parallelism of correction main shaft and line style track 8 running orbit, in 0.01mm, finally carries out test experiments.Result in limit test shows: the main spindle box 1 of six guide runners 9 assembles structure, and when cutting, the deflection of main spindle box 1 is within 2 microns, and adopts the assembling structure of four guide runners 9, and when same limit test, its variable quantity is in 10 microns.In the course of processing of large inflow, the main spindle box 1 of six guide runners 9 assembles the working (machining) efficiency that under structure, the working (machining) efficiency of (amount of feeding reaches about 6mm) assembles (amount of feeding reaches about 2mm) under structure than the main spindle box 12 of four guide runners 9 and improves nearly 3 times.
Except the technical characteristic described in description, it is the known technology of those skilled in the art.
Claims (5)
1. the assembling structure of headstock in vertical machining center, drives assembly, main shaft connecting plate including main spindle box, column, main spindle box；On main spindle box, its one end coordinated with column is provided with main spindle box mounted base, and the center of main spindle box mounted base arranges main spindle box and drives connecting portion, and described main spindle box drives connecting portion and described main spindle box to drive assembly to be connected；Main shaft connecting plate is fixed on main spindle box, and main spindle box is coordinated with spindle servo electric machine by main shaft connecting plate, it is characterized in that: described main shaft connecting plate is split-type structural, is divided into main spindle box connecting plate and spindle servo electric machine connecting plate:
Described main spindle box connecting plate is square, and its center is provided with manhole, and the aperture of the upper and lower end position of this manhole is all higher than the aperture of intermediate position；Described main spindle box connecting plate is fixed on described main spindle box；
Described spindle servo electric machine connecting plate is cylinder, and heart position arranges the manhole being coaxial therewith wherein, and its outer peripheral face is set to step shape, and top external diameter is less than lower outer diameter；
The central circular side face of manhole and described spindle servo electric machine connecting plate lower end periphery face interference fit on described main spindle box connecting plate.
2. the assembling structure of headstock in vertical machining center according to claim 1, is characterized in that: on described main spindle box connecting plate, the axial dimension of manhole central circular side face is less than the axial dimension of described spindle servo electric machine connecting plate lower end section.
3. the assembling structure of headstock in vertical machining center according to claim 1 and 2, is characterized in that:
On column, its two vertical edges with main spindle box counterface are respectively provided with the boss of vertical extension, are fixedly installed a line style track on described boss respectively；
Be respectively provided with the groove of vertical extension at two vertical edges of described main spindle box mounted base end face, two grooves described in during assembling are corresponding with two boss on described column respectively, and the width of described groove is not less than the width of described boss；
In two described grooves, symmetry is fixedly installed guide runner, and described guide runner coordinates with corresponding line style track.
4. the assembling structure of headstock in vertical machining center according to claim 3, is characterized in that: the number of described guide runner is four, is respectively fixedly disposed at the upper/lower terminal position of described groove.
5. the assembling structure of headstock in vertical machining center according to claim 3, is characterized in that: the number of described guide runner is six, is respectively fixedly disposed at the upper/lower terminal position of described groove and the vertical center position of each groove.
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| CN201410579255.8A CN104353848B (en) | 2014-10-24 | 2014-10-24 | The assembling structure of headstock in vertical machining center |
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| CN201410579255.8A CN104353848B (en) | 2014-10-24 | 2014-10-24 | The assembling structure of headstock in vertical machining center |
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| CN104353848A CN104353848A (en) | 2015-02-18 |
| CN104353848B true CN104353848B (en) | 2016-07-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107378002A (en) * | 2017-08-28 | 2017-11-24 | 江门市奥斯龙机械有限公司 | A kind of main spindle box for lathe |
| CN114993385B (en) * | 2022-07-13 | 2022-11-11 | 浙江金火科技实业有限公司 | Assembly detection device for improving assembly precision of spindle box component of numerically controlled lathe |
| CN115990775B (en) * | 2023-01-16 | 2024-04-05 | 宁波海天精工股份有限公司 | Drilling and tapping center high-speed spindle assembly precision adjusting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD242984B1 (en) * | 1985-11-28 | 1990-04-25 | Werkzeugmaschinenfabrik Herman | SPINDLE BOXES FOR TOOLING MACHINES |
| JP2008055586A (en) * | 2006-09-04 | 2008-03-13 | Brother Ind Ltd | Machine tool |
| CN202571301U (en) * | 2012-03-30 | 2012-12-05 | 无锡华联精工机械有限公司 | Main shaft structure of drill hole |
| CN203636489U (en) * | 2013-12-06 | 2014-06-11 | 中捷机床有限公司 | Vertical transmission structure of numerical-control boring and milling machine |
| CN104028786B (en) * | 2014-05-09 | 2018-01-02 | 北京科技大学 | A kind of split type headstock in vertical machining center structure |
| CN204182927U (en) * | 2014-10-24 | 2015-03-04 | 临清市顺佳机械设备有限公司 | The assembly structure of headstock in vertical machining center |
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