CN108526495B - Numerical control milling machine spindle box structure - Google Patents
Numerical control milling machine spindle box structure Download PDFInfo
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- CN108526495B CN108526495B CN201810650004.2A CN201810650004A CN108526495B CN 108526495 B CN108526495 B CN 108526495B CN 201810650004 A CN201810650004 A CN 201810650004A CN 108526495 B CN108526495 B CN 108526495B
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- Prior art keywords
- cabinet
- guide rail
- sliding block
- spindle box
- numerical control
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a kind of numerical control milling machine spindle box structures, it include: the first cabinet, the second cabinet, guide rail and sliding block, wherein, the rear end face of first cabinet is mounted on column, the guide rail and second cabinet are installed in the front end face of first cabinet, one end of the sliding block is fixed on second cabinet, and the other end of the sliding block is connect with the guide rail, and the sliding block is slided with the rotation of second cabinet along the guide rail.The present invention passes through the connection of guide rail and sliding block, makes spindle box resistance to capsizing with higher, enhances the integrally-built rigidity of spindle box.Also, it helps the improvement of cutter flutter situation, reduces the surface roughness and percent ripple of blade, to improve the machining accuracy for improving lathe, and then the processing quality of blade is improved.
Description
Technical field
The present invention relates to numerical control machine tool technique fields, and in particular, to a kind of numerical control milling machine spindle box structure.
Background technique
The progress of the process requirements and science and technology of modernization pushes lathe to high speed, high-precision, efficient side
To development, this also represents the highest level and developing direction of current machine-tool industry.Therefore, machine-tool industry is a country
The basis of process industry, lathe design and manufacture the horizontal quality and economy for determining the product by its production.
In Five-axis numerical control milling machine, the workbench being arranged on lathe bed can be turned round around X-axis, be defined as A axis；Setting exists
Electro spindle cabinet on column can be turned round around Y-axis, be defined as B axle.Wherein, the electro spindle of B axle connection CNC milling machine end,
The main structure of connecting elements is cantilever beam structure.When B axle carries out large angle pendulum, rigidity can occur for the Y-axis of CNC milling machine not
The phenomenon that foot, cutter head flutter.The processing method of the AB formula Five-axis numerical control milling machine is helical milling, when flutter occurs for cutter, processing
Resulting blade may have biggish surface roughness and percent ripple, and pass through the geometric accuracy of detection discovery part
It is unsatisfactory for production requirement.
In the prior art, by change lathe bed gusset distributional pattern or the single machine tool component of finite element analysis and to its into
Row structure compensation (widens thickening at the poor place of rigidity), to improve the entirety and local stiffness of numerically-controlled machine tool.But in size
Increase and decrease does not play good improvement to the Rigidity of the main spindle box of numerical control, and numerically-controlled machine tool is in use
Judder and moderate finite deformation easily occurs, influences the machining accuracy of workpiece and the stability of heavy machine tool processing quality.
Summary of the invention
In view of the foregoing, it is an object to a kind of numerical control milling machine spindle box structure is provided, it is outstanding to solve spindle box
Caused by arm configuration the problem of insufficient rigidity, so that judder and moderate finite deformation do not occur in use for numerically-controlled machine tool,
Improve the machining accuracy of workpiece and the stability of heavy machine tool processing quality.
To achieve the goals above, the invention adopts the following technical scheme:
Numerical control milling machine spindle box structure of the present invention, comprising: the first cabinet, the second cabinet, guide rail and sliding block, wherein
First cabinet is mounted on column, and the guide rail and second cabinet are installed in the front end face of first cabinet,
One end of the sliding block is fixed on second cabinet, and the other end of the sliding block is connect with the guide rail, the sliding block with
The rotation of second cabinet slided along the guide rail.
Preferably, the headstock structure further includes elastic component, and the elastic component is mounted on the guide rail interior, institute
When stating sliding block and being slided along the guide rail, contacted with the elastic component.
Preferably, the elastic component is spring.
Preferably, there are two the springs, the two sides of the sliding block, one end of the spring and the guide rail are located at
End fix, the other end of the spring is free end.
Preferably, the guide rail is arc-shaped.
Preferably, the guide rail includes the first assembly being fixedly connected and the second component, and the first assembly is fixed on institute
The end of the second component is stated, the sliding block is placed in second component.
Preferably, the first assembly is solid, and second component is not real with the fixed end of the first assembly
The heart.
Preferably, the guide rail is asymmetric relative to the central axes of second cabinet.
Preferably, with the central axes of second cabinet for 0 ° of starting point, the arc angle of the guide rail is -110 °~90 °,
Wherein, the arc angle is positive value in a counterclockwise direction, is clockwise negative value.
Preferably, the section of the guide rail is semi-shaped, and the section of the sliding block is T-type.
Compared with prior art, the present invention has the following advantages and beneficial effects:
The present invention passes through the connection of guide rail and sliding block, is effectively prevented the second cabinet due to generating in gravity and process
Cutting force and the pitching movement around X-axis that occurs, make spindle box resistance to capsizing with higher, reduce the second cabinet
Deflection, to enhance the integrally-built rigidity of spindle box.Also, it helps the improvement of cutter flutter situation, reduces
The surface roughness and percent ripple of blade to improve the machining accuracy for improving lathe, and then improve the processing quality of blade.
The present invention is by installing elastic component in guide rail interior, so that elastic component plays centainly in the second body pivot
Supporting role, improve its deformation.
The present invention can be by rotating clockwise 90 ° for milling cutter, and provides support by elastic component, bores to blank
The milling in shape hole, it is rear to carry out normal erect type spin milling, it only needs to carry out clamped one time to workpiece in process, so as to avoid
The problems such as position error caused by workpiece secondary clamping.
Detailed description of the invention
Fig. 1 is the schematic diagram of numerical control milling machine spindle box structure of the present invention；
Fig. 2 is the rearview of the second cabinet in the present invention；
Fig. 3 is scheme of installation of the present invention on column；
Fig. 4 is the main view of the first cabinet in the present invention.
In figure: 1, the second cabinet；11, main shaft installation part；12, cantilever beam structure；13, pedestal；2, the first cabinet；3, it leads
Rail；4, elastic component；41, first assembly；42, the second component；5, sliding block；6, column.
Specific embodiment
Embodiment of the present invention described below with reference to the accompanying drawings.Those skilled in the art may recognize that
It arrives, it without departing from the spirit and scope of the present invention, can be with a variety of different modes or combinations thereof to described
Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim
Range.In addition, in the present specification, attached drawing is drawn not in scale, and identical appended drawing reference indicates identical part.
Below with reference to Fig. 1-Fig. 4, the present invention will be described in detail.
In AB formula Five-axis numerical control milling machine, the workbench being arranged on lathe bed can be turned round around X-axis, and workbench is defined
For A axis；The electro spindle cabinet being arranged on column 6 can be turned round around Y-axis, be defined as B axle, wherein B axle connects CNC milling machine end
The electro spindle at end, the main structure of connecting elements are cantilever beam structure.In the present invention, the second cabinet 1 is electro spindle cabinet, the
One cabinet 2 is B axle cabinet, is mounted on column 6.Headstock structure of the present invention has rigidity height, precision height, effectively changes
The advantages of kind work piece surface roughness, it is primarily adapted for use in the Five-axis numerical control milling machine with AB axis oscillating function.
Fig. 1 is the schematic diagram of numerical control milling machine spindle box structure of the present invention, and Fig. 2 is the backsight of the second cabinet in the present invention
Figure, Fig. 3 are scheme of installation of the present invention on column, as shown in Figure 1-Figure 3, numerical control milling machine spindle box knot of the present invention
Structure, comprising: the first cabinet 2, the second cabinet 1, guide rail 3 and sliding block 5, wherein the first cabinet 2 is mounted on column 6,3 He of guide rail
Second cabinet 1 is installed in the front end face of the first cabinet 2, the installation site of guide rail 3 and the axis collinear of B axle, one end of sliding block 5
It is fixed on the second cabinet 1, for example, being fixed at the central axes of the rear end face of the second cabinet 1, the other end and guide rail 3 of sliding block 5
Connection drives the rotation of the second cabinet 1 with the rotation of B axle, and sliding block 5 is as the rotation of the second cabinet 1 is along the sliding of guide rail 3.
By the mating connection of sliding block 5 and guide rail 3, the second cabinet 1 is effectively prevented due to the cutting that generates in gravity and process
Power and the pitching movement around X-axis occurred, make headstock structure resistance to capsizing with higher, reduce the change of the second cabinet
Shape amount, to enhance integrally-built rigidity.Preferably, the section of guide rail 3 is semi-shaped, and the section of sliding block 5 is T-type,
The end of sliding block 5 is entrenched in inside guide rail 3, and forms prismatic pair with guide rail 3, can be slided along guide rail 3.
As shown in Fig. 2, the second cabinet 1 includes main shaft installation part 11, cantilever beam structure 12 and pedestal 13, wherein main shaft peace
Piece installing 11 connects main shaft installation part 11 for installing main shaft, 12 one end of cantilever beam structure, and the other end is fixed on pedestal 13, and second
Cabinet 1 is mounted on the end face of the first cabinet 2 by pedestal 13, and sliding block 5 is mounted at the central axes of cantilever beam structure 12.
As shown in figures 1 and 3, the rear end face of the first cabinet 2 is fixedly connected with ram, on the front end face of the first cabinet 2
Threaded hole is set, is connected through a screw thread ram and the first cabinet 2, is provided with longitudinal linear guide on column 6, ram is placed in vertical
To in linear guide, so that the first cabinet 2 is mounted on column 6 by ram, and can be slided up and down along column 6.In the first case
The front end face of body 2 is provided with multiple grooves, to reduce the production materials of the first cabinet 2, mitigates the total weight of the first cabinet 2.This
In one alternative embodiment of invention, 12 grooves are symmetrically arranged on the front end face of the first cabinet 2.In the first cabinet 2
Middle part is provided with two circular holes that radius is in stairway degression, and multiple grooves are laid in the periphery of circular hole, wherein are biased to the first cabinet
The Circularhole diameter of rear end face side is smaller, for installing B axle motor, be biased to the Circularhole diameter of the first cabinet front end face side compared with
Greatly, for connecting the second cabinet 1, the second cabinet 1 is connect with B axle motor by shaft coupling.It is set on the pedestal 13 of the second cabinet 1
It is equipped with equally distributed threaded hole, the first box back face is biased in the interface junction of two circular holes in the first cabinet 2
On the end face of the circular hole of side, it is provided with equally distributed threaded hole, and correspond with the position of the threaded hole on pedestal 13,
Pedestal 13 is inserted into the circular hole being relatively large in diameter up to contacting with the lesser circular hole end face of diameter, and the second cabinet 1 is bolted
With the first cabinet 2.
During AB formula Five-axis numerical control milling machine processes blade, B axle motor passes through the rotation of driving B axle, to drive
Second cabinet 1 is rotated around Y-axis, when rotational angle is larger, is influenced by the second cabinet gravity, edge can occur for the second cabinet 1
The deformation of Z-direction.Preferably, the headstock structure further includes elastic component 4, and elastic component 4 is mounted in guide rail 3
Portion, sliding block 5 when sliding block 5 is slided along guide rail 3, contact in guide rail 3 with elastic component 4.While the rotation of the second cabinet 1,
Band movable slider 5 is slided along guide rail 3, and elastic component 4 can play a supporting role, will be used as the second cabinet 1 and numerical control mill
The cantilever beam structure 12 of connecting elements becomes simple beam structure between the electro spindle of bed end, so as to improve the deformation of the second cabinet 1
Situation.Further, elastic component 4 is spring.In practical applications, it is selected according to the weight of the radius of guide rail 3 and the second cabinet 1
Select spring, wherein the stiffness factor of spring is obtained by following formula,
In formula, r is the radius of guide rail, and m is the weight of the second cabinet.
In order to enable equal elastic member 4 provides support when sliding block 5 is slided along left and right both direction, as shown in figure 4,
In an optional embodiment of the present invention, there are two springs, is located at the two sides of sliding block 5, one end and the guide rail 3 of spring
End is fixed, and the other end of spring is free end, that is, two springs respectively have one end to be fixedly connected respectively with the both ends of guide rail 3, sliding
Block 5 is located between the free end of two springs, when sliding block 5 is slided along left and right both direction, can contact with spring, to undertake
The weight component of second cabinet 1.
In one embodiment of the invention, guide rail 3 is arc-shaped, and correspondingly, spring is arc spring.Further,
Guide rail 3 includes that the first assembly 41 being fixedly connected and the second component 42, first assembly 41 are fixed on the end of the second component 42, sliding
Block 5 is placed in the second component 42, and sliding block 5 is mainly slided along the second component 42.When using semi-shaped arc guide rail, by
It is greater than external width in the inner width of guide rail, when installing sliding block, sliding block is first fixed into first assembly 41 from the second component 42
Side be put into the second component 42, then first assembly 41 is bolted with the second component 42 and is integrated, finally again will
Spring is fixed.
Preferably, first assembly 41 is solid, the second component 42 be not with the fixed end of first assembly 41 it is solid, so as to
In the bottom of fixed spring.
In the present invention, arc-shaped rail is symmetrically or non-symmetrically arranged relative to the central axes of the second cabinet 1, due to
When carrying out the milling of bellmouth to blank, need for milling cutter to be rotated by 90 °, therefore, it is necessary to sliding blocks 5 can be along arc-shaped rail
The arc angle of sliding is more than 90 °, wherein also needs to consider the width of sliding block itself and the compressed length of elastic component.
In one embodiment of the invention, guide rail 3 is asymmetric relative to the central axes of the second cabinet 1, and for the ease of milling cutter up time
Needle is rotated by 90 °, and guide rail 3 is located at the arc angle on the right side of central axes greater than 90 °, and is located on the left of central axes to guide rail 3 and (is equipped with
The side of first assembly 41) arc angle can be there is no limit.In one embodiment of the present of invention, guide rail 3 is located at central axes
The arc angle in left side is 90 °, and the arc angle on the right side of central axes is slightly larger than 90 °, with the central axes of the second cabinet 1 for 0 °
Starting point, the arc angle of guide rail 3 are -110 °~90 °, wherein arc angle is positive value in a counterclockwise direction, is clockwise
Negative value.Second component 42 be in the angular range that arc angle is -110 °~-100 ° it is solid, the bottom of spring is fixed on
The end face of two components 42.
In the present invention, the initial position of the second cabinet 1 is located on the central axes of the first cabinet, that is, sliding block 5 is located at guide rail 3
0 ° of starting point, due to the gravity of the second cabinet, cantilever beam structure 12 easily deforms, and passes through the company of sliding block 5 and guide rail 3
It connects, reduces the deformation of sliding block 5 in the Y direction, so that headstock structure resistance to capsizing with higher, enhances whole knot
The rigidity of structure, it helps the improvement of cutter flutter situation improves processing quality.Also, when the second cabinet 1 is rotated around B axle,
Band movable slider 5 slides, and sliding block 5 is contacted with the spring of guide rail interior, and spring stress deformation provides reaction force, facilitates the second case
Positioning when body is rotated around Y-axis, improves the precision of CNC milling machine.
In actual production, process blade when, due to blade using both ends to top installation way, need before processing
A bellmouth is made a call to for top positioning in the right end face of blade blank part, result in the need for carrying out secondary dress to workpiece
Folder, it may appear that position error.And in CNC milling machine workpieces processing of the application including numerical control milling machine spindle box structure of the present invention
When, the present invention, so that milling cutter is rotated clockwise 90 °, can pass through bullet by the way that the second cabinet 1 is rotated clockwise 90 ° around B axle
Spring provides support, and the milling of right side bellmouth is carried out to blade blank part, then carries out normal erect type spin milling, thus, processed
Clamped one time is only needed in journey.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of numerical control milling machine spindle box structure characterized by comprising the first cabinet, the second cabinet, guide rail and sliding block,
In, first cabinet is mounted on column, and the guide rail and second cabinet are installed in the front end of first cabinet
Face, one end of the sliding block are fixed on second cabinet, and the other end of the sliding block is connect with the guide rail, the sliding block
As the rotation of second cabinet is slided along the guide rail, the headstock structure further includes elastic component, the elasticity structure
Part is mounted on the guide rail interior and contacts when the sliding block is slided along the guide rail with the elastic component；
Wherein, when processing blade, the second cabinet is rotated clockwise 90 °, milling cutter is rotated clockwise 90 °, passes through elastic component
Support is provided, the milling of right side bellmouth is carried out to blade blank part, then carries out normal erect type spin milling.
2. numerical control milling machine spindle box structure according to claim 1, which is characterized in that the elastic component is spring.
3. numerical control milling machine spindle box structure according to claim 2, which is characterized in that there are two the springs, respectively position
In the two sides of the sliding block, one end of the spring and the end of the guide rail are fixed, and the other end of the spring is free end.
4. numerical control milling machine spindle box structure according to claim 1, which is characterized in that the guide rail is arc-shaped.
5. numerical control milling machine spindle box structure according to claim 4, which is characterized in that the guide rail includes being fixedly connected
First assembly and the second component, the first assembly are fixed on the end of second component, and the sliding block is placed in described
In two components.
6. numerical control milling machine spindle box structure according to claim 5, which is characterized in that the first assembly is solid, institute
Stating the second component is not solid with the fixed end of the first assembly.
7. numerical control milling machine spindle box structure according to claim 4, which is characterized in that the guide rail is relative to described second
The central axes of cabinet are asymmetric.
8. numerical control milling machine spindle box structure according to claim 7, which is characterized in that with the central axes of second cabinet
For 0 ° of starting point, the arc angle of the guide rail is -110 °~90 °, wherein the arc angle is positive value in a counterclockwise direction,
It is clockwise negative value.
9. numerical control milling machine spindle box structure according to claim 1, which is characterized in that the section of the guide rail is half I-shaped
Type, the section of the sliding block are T-type.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810650004.2A CN108526495B (en) | 2018-06-22 | 2018-06-22 | Numerical control milling machine spindle box structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810650004.2A CN108526495B (en) | 2018-06-22 | 2018-06-22 | Numerical control milling machine spindle box structure |
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| CN108526495B true CN108526495B (en) | 2019-09-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434411B (en) * | 2019-08-13 | 2021-06-08 | 南京工程学院 | Horizontal shaft swinging bidirectional unbalance loading balancing device |
| CN111300082B (en) * | 2020-03-16 | 2022-01-07 | 济南国柱机械有限公司 | Milling machine spindle |
| CN113560644A (en) * | 2021-09-23 | 2021-10-29 | 北京博鲁斯潘精密机床有限公司 | High-speed precise horizontal five-axis linkage aero-engine blade numerical control milling center |
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