CN108778615A - Rotating plate device and the lathe for being provided with the rotating plate device - Google Patents
Rotating plate device and the lathe for being provided with the rotating plate device Download PDFInfo
- Publication number
- CN108778615A CN108778615A CN201780015709.0A CN201780015709A CN108778615A CN 108778615 A CN108778615 A CN 108778615A CN 201780015709 A CN201780015709 A CN 201780015709A CN 108778615 A CN108778615 A CN 108778615A
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- CN
- China
- Prior art keywords
- turntable
- supporting member
- rotating plate
- plate device
- piston component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- B23Q1/28—Means for securing sliding members in any desired position
-
- 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
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
- B23Q1/52—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism a single rotating pair
-
- 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
- B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
- B23Q16/02—Indexing equipment
- B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
- B23Q16/10—Rotary indexing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
- F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
- F16D55/28—Brakes with only one rotating disc
- F16D55/32—Brakes with only one rotating disc actuated by a fluid-pressure device arranged in or on the brake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J3/00—Diaphragms; Bellows; Bellows pistons
- F16J3/02—Diaphragms
-
- 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
- B23Q2220/00—Machine tool components
- B23Q2220/004—Rotary tables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
Abstract
A kind of turntable is with rotatable and be slidably disposed in support body.Piston component is arranged to apply pressing force to turntable along the direction of rotation axis.The pressing force generates the direction of rotation restraint of the rotation and sliding between support body and turntable.Support body is linked with piston component by coupling member.The coupling member is flexible on rotation axis direction and is rigid in a rotational direction.When the pressure is exerted, restraint is generated between piston component and turntable.
Description
Technical field
An aspect of of the present present invention is related to a kind of rotating plate device and the lathe equipped with the rotating plate device.
Background technology
In heavy duty machine tools such as machining center, there is the lathe for including the turntable for installing workpiece or cutter.Rotation
Turntable is installed and is supported on the supporting member as base portion in a rotatable way.In addition, turntable can pass through piston structure
The active force of part and relative to the direction of rotation on supporting member by grasping (for example, with reference to patent document 1).
Relevant technical literature
Patent document
Patent document 1：JP-A-2008-114306
Invention content
The problem to be solved in the present invention
Fig. 6 shows the example of the rotating plate device 118 in the minds of setting work in-process.As shown in fig. 6, as observed,
Supporting member 122 is arranged at lower part, and turntable 120 is arranged at top.The central part of supporting member 122 is rotating base
Axis auxiliary part 140.The inner circumferential cylindrical portion of turntable 120 is supported by rotating base axis auxiliary part 140 via bearing 143,
And it can be rotated around rotating base axis auxiliary part 140.Direction of rotation is indicated by arrow B.
Slidingsurface 146 is provided at the position of the outer peripheral portion of supporting member 122, the slidingsurface 146 is in turntable
In arrangement states lower slider and rotation when 120 rotation.In addition, in the rotating base axis auxiliary part 140 of supporting member 122 and periphery
Between partial slidingsurface 146, the supply of working oil is provided between supporting member 122 and turntable 120 and upper and lower
Mobile piston component 152.When lower work grease chamber 164 of the working oil supplied to the lower part of piston component 152, piston component
152 move up, and when upper work grease chamber 162 of the working oil supplied to the top of piston component 152, piston component 152
It moves down.Vertically movable range is about 1mm.
The downward force of piston component 152 is transferred to the rotary drive auxiliary part combined with turntable 120 by bolt 158
128 flank 128A, so that entire turntable 120 and 128 reduces downwards.
Using above-mentioned configuration, passed by the movement that moves down of piston component 152 by the directed force F of hollow arrow instruction
It is handed to the flank 128A of rotary drive auxiliary part 128.The directed force F, which is transferred to, to be combined with rotary drive auxiliary part 128
Turntable 120, and the position of the outer peripheral portion of supporting member 122 is also transferred to as the directed force F indicated by hollow arrow
Slidingsurface 146.Directed force F by being transferred to slidingsurface 146 generates frictional force on slidingsurface 146, to hinder
Spin-ended turntable 120 rotates.That is, the limitation of 120 supported part 122 of turntable and clamping.
In addition, in above-mentioned configuration, piston component 152 is disposed relative to the component and turntable of 122 side of supporting member
The component of 120 sides free state in a rotational direction.For this purpose, when down force acts on piston component 152 simultaneously
And when being frictionally engaged with the flank 128A of rotary drive auxiliary part 128, piston component 152 becomes moving with 120 one of turntable
Dynamic state.That is, under the rotation status of turntable 120, piston component 152 is also integrally rotated with turntable 120.
In rotating plate device 118, in order to improve the rotation efficiency of turntable 120, the slidingsurface of supporting member 122 is reduced
Friction coefficient between 146 and the contact surface of turntable 120 is required.On the other hand, turntable 120 is resisted in order to improve
Direction of rotation on external force chucking power, increase component between friction coefficient be required.In other words, turntable 120
Compatibility between high rotation efficiency and high chucking power is contradictory.
In addition, in view of the above several points, one aspect of the present invention is devised, and the purpose of the present invention is make it possible to about
Relative rotation between beam piston component and turntable, both high rotation efficiency and high chucking power to realize turntable.
The means solved the problems, such as
To solve the above-mentioned problems, inventor is absorbed in is combined piston component 152 with supporting member 122 in a rotational direction
Together, wherein in rotating plate device 118 shown in Fig. 6, piston component 152 is in free in a rotational direction
State.It is therefore contemplated that in the turntable 120 being transferred to the active force of piston component 152 in the path of turntable 120
Rotation be prevented from and for obtaining chucking power.Each aspect of the present invention uses following methods.
The basic configuration of rotating plate device according to an aspect of the present invention includes：Supporting member, the supporting member are used as rotation
The base portion of table apparatus；Turntable, which is arranged on the slidingsurface formed on the bearer, so as to relative to branch
Bearing member rotates and sliding；And piston component, the piston component are arranged on a spinstand, so as to along the rotary shaft of turntable
Line direction presses turntable, wherein is generated by being applied to the pressure of turntable by piston component and is resisted in a rotational direction
The restraint of rotational slide between the slidingsurface and turntable of supporting member.
Rotating plate device further includes the connecting elements for connecting supporting member and piston component, and connecting elements has and can rotate
The rotation axis side of platform is bent upwards but has in a rotational direction the structure of rigidity, and is rotated when being pressed against by piston component
When platform, the restraint on direction of rotation that also generates turntable between the press section and turntable of piston component.Here, connection
There is component the fact of rigidity to mean that connecting elements substantially will not when applying load along direction of rotation in a rotational direction
Flexible deformation, and the relative rotation between supporting member and piston component is restrained.
According to an aspect of the present invention, first, when the edge by piston component prevents and the effect in the direction of limitation rotation
When power is applied to turntable, the work for the rotation for preventing and limiting turntable is generated between turntable and the slidingsurface of supporting member
Firmly.Therefore, first, the holding action of the turntable on supporting member is executed.
In addition, according to an aspect of the present invention, the holding action of turntable also carries out as follows.In other words, according to the present invention
One side, supporting member connects via connecting elements with piston component and is bonded to each other on the direction of rotation of turntable, and
And piston component can be in rotation axis side's upward displacement.By the bearing for making piston component and the base portion for being used as rotating plate device
Part combines and piston component is made to become non-rotating component, is generated between the press section surface for pressing turntable using piston component
Active force for the rotation for preventing and limiting turntable.Therefore, even if using the active force, turntable can also be executed to branch
The holding action of bearing member.
According to an aspect of the present invention, prevent and limit rotation as set forth above, it is possible to be executed at two different positions
The action of the rotation of platform, and the higher chucking power on supporting member can be obtained.
According to an aspect of the present invention, it is not applied when between the press section surface for pressing turntable with above-mentioned piston component
When adding the active force in the direction of the edge limitation rotation by piston component, the space between the surface of press section becomes quick condition.
That is, the flexure operation of connecting elements returns, and gap is generated between the surface of press section.Therefore, turntable can be with
It is rotated with smaller resistance to sliding, so as to cause higher rotation efficiency.
The rotating plate device of the one side of aforementioned present invention can have following configuration.
In above-mentioned rotating plate device, the connecting elements for connecting supporting member and piston component may include：First connecting portion,
The first connecting portion is connected to piston component；Second connecting portion, the second connecting portion are connected to supporting member；And thin-walled portion,
The thin-walled portion is arranged between first connecting portion and second connecting portion, and is configured to facilitate connecting elements relative to turntable
Rotation axis direction bending.By this configuration, due to the opposite shifting relative to supporting member of the vertical motion of piston component
Position and movement can easily be reduced by the smaller resistance due to thin-walled portion.
The thin-walled portion of connecting elements can have the shape that do not interfere with supporting member when connecting elements is bent.This
In the case of, thin-walled portion can be on the direction that the thin-walled portion of connecting elements is detached relative to rotation axis direction with supporting member
Be formed as concave shape.By forming the connecting elements of this shape, when connecting elements is bent, connecting elements not with supporting member
Interference, and connecting elements can for a long time be used without damaging.
Fatigue life ameliorative way can be applied to the connecting elements in above-mentioned rotating plate device.By applying fatigue life
Ameliorative way can improve the fatigue life of connecting elements.
Above-mentioned fatigue life ameliorative way may include bead.Since bead is typically common method,
Stable performance can be obtained.
In above-mentioned rotating plate device, when being pressed against turntable by piston component, the press section of piston component and rotation
Friction coefficient between platform can be set as being more than it for the slidingsurface for forming contact surface on the bearer and turntable
Between friction coefficient.When setting friction coefficient in this way, the higher rotation of turntable can be satisfactorily realized
Compatibility between efficiency and higher chucking power.
In above-mentioned rotating plate device, can the contact surface for forming slidingsurface on the bearer and turntable it
Between using friction mitigation method.When application friction mitigation method in this way, the rotational slide resistance of component can be reduced,
And higher rotation efficiency can be improved.
It may include the sliding material made of immersion oil resin that friction, which mitigates equipment,.By using made of oil immersion resin
Sliding material can effectively mitigate and rub and help to obtain higher rotation efficiency.
It should be pointed out that above-mentioned rotating plate device can be arranged in various lathes.
Advantages of the present invention
This aspect according to the present invention, the rotational slip part setting of piston component and turntable relative rotation is by piston structure
The active force of part is transferred in the path of turntable, and the relative rotation by preventing and limiting piston component, may be implemented
The higher rotation efficiency and higher chucking power of turntable.
Description of the drawings
Fig. 1 is the whole solid for showing the machining center including rotating plate device according to the embodiment of the present invention
Figure.
Fig. 2 is the half sectional view for showing rotating plate device according to the embodiment of the present invention.
Fig. 3 is the plan view of connecting elements according to the embodiment of the present invention.
Fig. 4 is the sectional view along the line IV-IV interceptions of Fig. 3.
Fig. 5 is the enlarged drawing of the arrow V in Fig. 4.
Fig. 6 is the exemplary half sectional view for showing rotating plate device.
Specific implementation mode
Hereinafter, embodiments of the present invention are described with reference to the accompanying drawings.It in the present embodiment, will be to setting
Rotating plate device in the minds of work in-process is described.
Fig. 1 shows the Four-axis milling center 10 including rotating plate device 18.Machining center 10 be include three straight trip axis
With the lathe of a rotary shaft.Machining center 10 includes lathe bed 11, Z axis mobile column 12, Y-axis moving body 13, casing main shaft 14, knife
Tool 15, X-axis mobile station 16 and turntable 20.
Lathe bed 11 is in shoulder T shapes and on floor surface.Z axis mobile column 12 is arranged on lathe bed 11
11 upper edge Z-direction of lathe bed moves.Y-axis moving body 13 is arranged in Z axis mobile column 12 relative to 12 edge of Z axis mobile column
Y direction moves.Casing main shaft 14 is arranged to relative to Y-axis moving body 13 on Y-axis moving body 13 on the direction of rotation A
It swings (rotation).The casing main shaft 14 includes rotatable shaft.Cutter 15 be fixed to the end of the main shaft of casing main shaft 14 and
It is rotated with the rotation of main shaft.
X-axis mobile station 16 is arranged to move in 11 upper edge X-direction of lathe bed on lathe bed 11.X-axis mobile station 16 is wrapped
Include the rotating mechanism that can be rotated on the direction of rotation B.Turntable 20 is fixed to the upper end of the rotating mechanism of X-axis mobile station 16
Portion.That is, turntable 20 can be rotated relative to X-axis mobile station 16 on the direction of rotation B.Workpiece W is mounted on turntable
On 20 upper surface.X-axis, Y-axis and Z axis shown in Fig. 1 are orthogonal, and Y direction indicates direction vertically upward.
Next, by the embodiment of rotating plate device 18 is described with reference to Fig. 2.It should be noted that in Fig. 1
The schematic setting state of rotating plate device 18 diagrammatically shown as image, and specifically configuration shown in Fig. 2.Make
Supporting member 22 for the base portion of rotating plate device 18 shown in Fig. 2 is opposite with the X-axis mobile station 16 of machining center shown in FIG. 1
The component answered.
In fig. 2, turntable 20 is supported in a rotatable way by supporting member 22, and turntable 20 rotates so that
The mode that turntable 20 is clamped by supporting member 22 is limited.
Turntable 20 is made of platform main component 24 and rotary drive auxiliary part 28.It is each in these components 24 and 28
Person is annularly arranged around the rotation axis C of rotating plate device 18.Rotary drive auxiliary part 28 is arranged in platform main component 24
Lower face side position on.Rotary drive auxiliary part 28 is linked by bolt 34 and is bound to platform main component 24.
Supporting member 22 is made of bearing main component 38, rotating base axis auxiliary part 40 and cylinder auxiliary part 42.This
Each of a little components 38,40 and 42 are annularly arranged around the rotation axis C of rotating plate device 18.Rotating base axis assists
Component 40 is arranged at the position of the rotation axis C of rotating plate device 18 and the inner circumferential side position in bearing main component 38 is arranged
Place.Cylinder auxiliary part 42 is arranged at the upper surface side position of bearing main component 38 and is arranged in the rotation of turntable 20
Between base shaft auxiliary part 40 and the piston component 52 being described later on.
Each of auxiliary part 40 and 42 is linked and is combined with bearing main component 38 by bolt etc..Rotating base
Axis auxiliary part 40 is linked and is combined with bearing main component 38 by clamp device (not shown).Cylinder auxiliary part 42 passes through
Bolt 39 links and is bound to bearing main component 38.
In above-mentioned turntable 20 and supporting member 22, the rotating base axis auxiliary part 40 of supporting member 22 is formed as shaft-like,
And turntable 20 and supporting member 22 are fitted to component 40 via bearing 43, and turntable 20 is rotatable.Specifically, axis
43 are held to be arranged on the upper end axle portion 40A of rotating base axis auxiliary part 40 so that the rotation of turntable 20 can smoothly into
Row.
In fig. 2, the upper surface at the lower part of the right positions positioned at platform main component 24 of bearing main component 38 is
The slidingsurface 46 for sliding and rotating together with platform main component 24.Turntable 20 slides on the slidingsurface 46 of supporting member 22
And rotation.
The rotation of turntable 20 is provided by the power transfer mechanism of gear 48 and worm gear 50, gear 48 and worm gear
50 are arranged at the bottom right side position of rotary drive auxiliary part 28 as shown in Figure 2.Rotating power source such as electro-motor (does not show
Go out) rotary power be transferred to gear 48.
Piston component 52 is equipped and is arranged into the circumferential position of cylinder auxiliary part 42.As observed in fig. 2, piston
Component 52 and cylinder auxiliary part 42 pass through at the upper surface location of 42 the two of piston component 52 and cylinder auxiliary part
Connecting elements 60 connects.Connecting elements 60 is linked to cylinder auxiliary part 42 by bolt 55, and is linked to work by bolt 56
Plug member 52.Although the detailed construction of connecting elements 60 will be described later, connecting elements 60 is rigid in a rotational direction
Ground links, and is linked to rotating plate device 18 in the upper energy of rotation axis direction (vertical direction as what is observed in Fig. 2) C
It is enough flexibly to deform.Therefore, piston component 52 can relative to cylinder auxiliary part 42 on rotation axis direction relative shift.
In the present embodiment, relative shift and amount of movement are about 1mm.
It is stairstepping that piston component 52, which is formed as section,.At the position of the intermediate level of stairstepping and most
Work grease chamber 62 and lower work grease chamber 64 are formed at the position of lower surface.The position of intermediate ladder is upper work grease chamber 62.Work
Make oil and upper work grease chamber 62 is supplied to by the oily channel 66 being formed in cylinder auxiliary part 42.Reference numeral 54 indicates that oil is logical
The closure stop in road 66.
The position of the lowest surface of piston component 52 is that lower work grease chamber 64 is located at.Working oil is by being formed in bearing main body
Oily channel 70 in component 38 is supplied to lower work grease chamber 64.It should be noted that switching upper working oil by switching valve etc.
The supply and discharge of room 62 and lower work grease chamber 64.In addition, just upper work grease chamber 62 in the present embodiment and lower working oil
For the area of room 64, the area of upper work grease chamber 62 is more than the area of lower work grease chamber 64.
Therefore, according to the above-mentioned arrangement of piston component 52, following active force (pressing force) is generated on piston component 52.It is first
First, in the state that working oil is discharged supplied to the working oil in upper work grease chamber 62 and lower work grease chamber 64, in piston structure
Active force (pressing force) F in (direction indicated on piston component 52 by the hollow arrow of Fig. 2) downwards is generated in part 52.Phase
Instead, when working oil is discharged supplied to the working oil in lower work grease chamber 64 and upper work grease chamber 62, in piston component 52
Generate upward active force.Active force in downward direction is set as due between upper work grease chamber 62 and lower work grease chamber 64
Area discrepancy and it is larger in the up-down direction.
Fig. 3 to Fig. 5 shows the configuration of connecting elements 60.As shown in figure 3, connecting elements 60 is in the form of disk, the dribbling
There is the hollow central portion for having a ring-shaped cross-section shape.As shown in Figure 4 and Figure 5, the inner peripheral portion 60A and peripheral part in tubular shape
Point 60B is formed in when observing relative to each other in thick wall part 60X, but between inner peripheral portion 60A and outer peripheral portion 60B in
Between part 60C be formed in thin-walled portion 60Y.Thin-walled portion 60Y passes through shape between the thick wall part 60X in inner circumferential and periphery
It is formed at concave shape.Therefore, flexural deformation of the connecting elements 60 on rotation axis direction can be easily performed.Thin-walled
The concave shape of part 60Y is formed by cutting.
As described above, connecting elements 60 include as thick wall part 60X inner peripheral portion 60A and outer peripheral portion 60B and
Middle section 60C as thin-walled portion 60Y.The configuration is conducive to the characteristic of connecting elements 60, and connecting elements 60 can revolve
Shaft axis side is bent upwards but has rigidity in a rotational direction.Here, connecting elements 60 has rigidity meaning in a rotational direction
Refer to following states：In this state, when the load on direction of rotation is applied to connecting elements 60, connecting elements 60 is to rotate
There is no the mode of notable flexible deformation to rotate on direction.The state is it is meant that the elasticity change in a rotational direction of connecting elements 60
Shape measurer has rigidity, which falls when designing direction of rotation maximum load and being applied to connecting elements 60 holds in a rotational direction
Perhaps in deflection.
As shown in Fig. 2, the concave shape of thin-walled portion 60Y is arranged so that concave shape towards cylinder auxiliary part 42.
It therefore, can be to avoid the upper surface of connecting elements 60 and cylinder auxiliary part 42 when piston component 52 shifts and moves down
Interference.Therefore, connecting elements 60 can for a long time be used without being damaged.
Connecting elements 60 can be bent upwards in the side of the rotation axis of rotating plate device 18, but 60 basis of connecting elements
To there is rigidity in a rotational direction and the particular/special requirement of cost is made of Steel material.In the present embodiment, it uses
S45C.In addition, as piston component 52 moves and shifts, connecting elements alternating bending simultaneously shifts, and so as to cause fatigue, therefore needs
Improve fatigue life.Therefore, in the present embodiment, as fatigue life mode is improved, bead S is applied to connect
The inner peripheral portion of component 60 and the thin-walled portion 60Y of outer peripheral portion.It is shown by the dotted line in Fig. 5 using the position of bead S.
For the ease of processing, bead S can be applied in the whole surface of connecting elements 60, but due to the processing of bead S
Cost is proportional to area, thus from the point of view of cost, preferably reduces necessary part.
As the method for the fatigue life for improving connecting elements 60, there are other methods, such as refining quenching hardening,
And the material of connecting elements 60 is made to become the material with high-fatigue strength.For example, the material can be baking bearing steel, carbon
Composite material.
As being clearly shown in Fig. 3 and Fig. 5, in connecting elements 60, between equal in inner peripheral portion 60A
Every the multiple bolt-inserting holes 51 for being formed with bolt 55 and being inserted into.Similarly, it is formed at equal intervals in outer peripheral portion 60B
There are multiple bolt-inserting holes 57 that bolt 56 is inserted into.In the present embodiment, 20 bolt-inserting holes 51 and 57 are formed with.
As in figure 3 only in one location shown in, the bolt-inserting hole 51 of inner peripheral portion 60A and the bolt of outer peripheral portion 60B are inserted
Enter hole 57 to be located at away from the identical radial positions of center O.
Fig. 2 is returned, the interconnected relationship between piston component 52 and turntable 20 is described.In the rotation of turntable 20
Turn on transmission auxiliary part 28, is formed with flank 28A outstanding to the left as shown in Figure 2.The bottom right end 52A of piston component 52 is set
It is set to and is contacted with flank 28A with preset width.Therefore, the active force being acting downwardly on piston component 52 (is referred to by hollow arrow
The directed force F shown) via the abutting part K of two components 28A and 52A it is transferred to rotary drive auxiliary part 28 (turntable 20).
The abutting part K of two components 28A and 52A are switchable parts, which is used to depend on two components
Rotation is limited with the presence or absence of contact or allow to rotate between 28A and 52A.Rotation is limited under contact condition, and is connect non-
Allow to rotate under the state of touching.That is, since piston component 52 passes through connecting elements 60 and non-rotating cylinder auxiliary part 42
Into bonding state, therefore under the rotation status of turntable 20, piston component 52 becomes relative rotation portions.When the work of contact
When being firmly applied on corresponding abutting part K, the active force to prevent turntable 20 rotate.Therefore, piston component 52 to
Lower active force is used as the active force of the rotation for preventing and limiting the rotation relative to turntable 20.
In addition, as shown in Fig. 2, as directed force F indicated by an arrow, it is transferred to the down force effect of turntable 20
On being formed in the lower right surface part of platform main component 24 bearing main component 38 slidingsurface 46 on, using as
Limit the active force of the rotation of turntable 20.Sliding component 72 and 74 is arranged in slidingsurface 46 and platform main component 24
On abutting part M between lower surface.First sliding component 72 is arranged on slidingsurface 46, and the second sliding component 74 is arranged
On the lower surface of platform main component 24.
In the present embodiment, the friction coefficient of abutting part K and abutting part M are arranged so that the friction coefficient of abutting part K
More than the friction coefficient of abutting part M.Therefore, abutting part M is formed by the mitigation method that rubs, and each in abutting part K and M
Person configures as follows.First, in abutting part K, the main part of piston component 52 is formed from steel.Including flank 28A on the other hand,
Rotary drive auxiliary part 28 is made of spheroidal graphite cast-iron.Next, in by the abutting part M that mitigation method is formed that rubs, it is sliding
First sliding component 72 on dynamic surface 46 is made of sliding material, oil immersion resin.The thickness of first sliding component 72 be 1mm extremely
1.2mm.Second sliding component 74 of platform main component 24 is formed from steel.In addition, the supporting member 22 as base portion is made of cast iron.
As above-mentioned configuration as a result, in the present embodiment, the friction coefficient of abutting part K is 0.1 to 0.3, and abutting part M rubs
It is 0.02 to 0.05 to wipe coefficient.
Next, by the operation of the rotating plate device 18 according to the above embodiment is described with reference to Fig. 2.
First, in the state of so that the turntable 20 for being placed with workpiece W is rotated, working oil is supplied to by oily channel 70 and is lived
The lower work grease chamber 64 of 52 lower section of plug member.In this state, the work in the upper work grease chamber 62 above piston component 52
Make the state that oil enters through the discharge of oily channel 66.The control of supply and the discharge of working oil is switched by unshowned oily channel
Valve executes.In this state, effect upwards is generated in piston component 52 by the working oil supplied to lower work grease chamber 64
Power.
By the upward active force generated in piston component 52, piston component 52 be in the piston component 52 not with rotation
The quick condition that platform 20 contacts.That is, piston component 52 is moved up by upward active force.The movement is due to connecting structure
The fact that part 60 can be bent along rotation axis direction and be easy to carry out.Since this is moved up, piston component 52 and rotation
The abutting part K being driven between the flank 28A of auxiliary part 28 is in discrete state.Therefore, although turntable 20 is placed on bearing
On the slidingsurface 46 of main component 38, but since down force is not applied to turntable 20, thus turntable 20 is in
Direction of rotation is relative to the unrestricted rotatable state with low-friction coefficient of supporting member 22.
Under the free rotation state of turntable 20, by driving unshowned rotating power source such as electro-motor, borrow
Help the rotating actuator of gear 48 and worm gear 50 and turntable 20 is made to rotate.Therefore, it is placed on turntable 20
Workpiece W can have predetermined phase.
In addition, under the free rotation state of turntable 20, turntable 20 is placed on bearing main component in turntable 20
It rotates and slides on slidingsurface 46 in the state of on 38 slidingsurface 46.However, due to the friction on slidingsurface 46
Coefficient be set to it is relatively low, thus the rotation of turntable 20 with high rotation efficiency carry out.
Next, by being carried out to preventing turntable 20 from rotating and limiting turntable 20 and be clamped to the action of supporting member 22
Description.In the state that turntable 20 is limited and is clamped by supporting member 22, working oil is supplied to piston component by oily channel 66
The upper work grease chamber 62 of 52 tops.On the contrary, in this state, the working oil in the lower work grease chamber 64 of 52 lower section of piston component
It is discharged.Therefore, generated in piston component 52 from the working oil supplied to upper work grease chamber 62 from hollow arrow indicate to
Lower directed force F.
Due to the down force F generated in piston component 52, the flank 28A of rotary drive auxiliary part 28 via to
Socket part K is pressed downwardly.It is performed at this point, preventing and limiting the action that rotary drive auxiliary part 28, i.e. turntable 20 rotates.
That is, at abutting part K, the rotation of non-rotating piston component 52 and by directed force F with the flank in rotation status
28A sliding contacts, and therefore apply the frictional force for preventing rotation.Therefore, the rotation of turntable 20 is prevented from and restrained, and
And turntable 20 is clamped by supporting member 22.
Particularly, in the present embodiment, the friction coefficient of abutting part K is set greater than the friction coefficient of abutting part M, and
And the area of upper work grease chamber 62 is formed larger than the area of lower work grease chamber 64.Therefore, it can generate and be used at abutting part K
The larger frictional force of rotation is prevented, and can limit and turntable 20 is clamped.
In addition, when 28 abutting portion K of rotary drive auxiliary part is pushed down on, entire turntable 20 also moves down.
Due to moving down for turntable 20, above-mentioned abutting part M also prevents the rotation of turntable 20.By the action, 20 quilt of turntable
Supporting member 22 is limited and is clamped.That is, at abutting part M, the rotation of rotation status is in relative to non-rotating supporting member 22
Turntable 20 rotates and carries out sliding contact by directed force F, and therefore applies the frictional force for preventing rotation.Therefore, turntable
20 rotation is prevented from and is limited, and 20 supported part 22 of turntable is clamped.
As described above, in the present embodiment, preventing turntable 20 from rotating and limiting turntable 20 and be clamped in bearing
Action on part 22 is two positions：It is executed at abutting part K and abutting part M.Therefore, it can be limited using higher chucking power
Turntable 20.
Although about particular implementation, invention has been described, the present invention can be with various other shapes
Formula is realized.
For example, in the above-described embodiment, machining center 10 has been described as the representative example of lathe.According to the present invention
The rotating plate device 18 of embodiment can also be applied to various lathes, such as grinding machine.
In addition, in the above-described embodiment, the position of abutting part K is inner circumferential position, and the position of abutting part M is periphery
The position of side, but opposite arrangement can also be used.
In addition, although being used in the above-described embodiment in conjunction with the method for all parts be to utilize the tight of such as bolt etc
Gu tool is performed, but can use the other methods for such as welding or bonding.
In addition, in the above-described embodiment, working oil is used as the operating pressure for keeping piston component 52 vertically movable, but
It is that can also use air.
The Japanese patent application (Japanese patent application No.2016-045099) that the application was submitted based on March 9th, 2016,
The content of the Japanese patent application is herein incorporated by reference.
Reference sign
10：Machining center
11：Lathe bed
12：Z axis mobile column
13：Y-axis moving body
14：Casing main shaft
15：Cutter
16：X-axis mobile station (supporting member)
18：Rotating plate device
20：Turntable
22：Supporting member
24：Platform main component
28：Rotary drive auxiliary part
28A：Flank
30：Lid auxiliary part
38：Support main component
40：Rotating base axis auxiliary part
42：Cylinder auxiliary part
43：Bearing
46：Slidingsurface
48：Gear
50：Worm gear
52：Piston component
54：Closure stop
60：Connecting elements
60A：Inner peripheral portion
60B：Outer peripheral portion
60C：Middle section
60X：Thick wall part
60Y：Thin-walled portion
62：Upper work grease chamber
64：Lower work grease chamber
66：Oily channel
70：Oily channel
72：First sliding component
74：Second sliding component
B：The direction of rotation of turntable
C：The rotation axis direction of turntable
W：Workpiece
K：Abutting part
M：Abutting part
S：Bead
Claims (10)
1. a kind of rotating plate device, including：
Supporting member, base portion of the supporting member as the rotating plate device；
Turntable, the turntable is arranged on the slidingsurface on being formed in the supporting member, so as to relative to described
Supporting member rotates and sliding；And
Piston component, the piston component is arranged on the turntable, so as to along the rotation axis side of the turntable
To pressing the turntable,
Wherein, the cunning for resisting the supporting member is generated by being applied to the pressure of the turntable by the piston component
The restraint in a rotational direction of dynamic rotational slide between surface and the turntable,
Wherein, the rotating plate device further includes connecting elements, and the connecting elements connects the supporting member and the piston structure
Part,
Wherein, the connecting elements has and can be bent upwards in the rotation axis side of the turntable, but in the rotation
Turn the structure on direction with rigidity, and
Wherein, when being pressed against the turntable by the piston component, in the press section of the piston component and the rotation
Also the restraint on the direction of rotation of the turntable is generated between platform.
2. rotating plate device according to claim 1,
Wherein, the connecting elements for connecting the supporting member and the piston component includes：
First connecting portion, the first connecting portion are connected to the piston component；
Second connecting portion, the second connecting portion are connected to the supporting member；And
Thin-walled portion, the thin-walled portion are arranged between the first connecting portion and the second connecting portion, and described thin
Wall part is configured to facilitate bending of the connecting elements relative to the rotation axis direction of the turntable.
3. rotating plate device according to claim 2,
Wherein, the thin-walled portion of the connecting elements has does not interfere when the connecting elements is bent with the supporting member
Shape.
4. rotating plate device according to claim 3,
Wherein, the thin-walled portion the connecting elements the thin-walled portion relative to the rotation axis direction with it is described
Be formed as concave shape on the direction of supporting member separation.
5. rotating plate device according to any one of claims 1 to 4,
Wherein, fatigue life ameliorative way is applied to the connecting elements.
6. rotating plate device according to claim 5,
Wherein, the fatigue life ameliorative way includes bead.
7. the rotating plate device according to any one of claims 1 to 6,
Wherein, when being pressed against the turntable by the piston component, the press section and the rotation of the piston component
Friction coefficient between turntable is set greater than connecing for the slidingsurface that is formed on the supporting member and the turntable
Touch the friction coefficient between surface.
8. rotating plate device according to any one of claims 1 to 7,
Wherein, the slidingsurface on being formed in the supporting member and between the contact surface of the turntable using friction
Mitigate equipment.
9. rotating plate device according to claim 8,
Wherein, it includes by immersion oil resin system that the friction being formed on the slidingsurface on the supporting member, which mitigates equipment,
At sliding material.
10. a kind of lathe, including：
Rotating plate device according to any one of claim 1 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016045099A JP6686554B2 (en) | 2016-03-09 | 2016-03-09 | Rotary table device and machine tool equipped with the device |
| JP2016-045099 | 2016-03-09 | ||
| PCT/JP2017/008953 WO2017154886A1 (en) | 2016-03-09 | 2017-03-07 | Rotating table device, and machine tool provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108778615A true CN108778615A (en) | 2018-11-09 |
| CN108778615B CN108778615B (en) | 2020-11-03 |
Family
ID=59789561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780015709.0A Active CN108778615B (en) | 2016-03-09 | 2017-03-07 | Rotary table device and machine tool provided with same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6686554B2 (en) |
| CN (1) | CN108778615B (en) |
| DE (1) | DE112017001226T5 (en) |
| WO (1) | WO2017154886A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI766466B (en) * | 2020-12-07 | 2022-06-01 | 上銀科技股份有限公司 | Rotary seat and rotary table |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561132B (en) * | 2019-09-16 | 2020-11-10 | 温州爱作贸易有限公司 | Gantry machine tool slide rail oiling device |
| JP7415584B2 (en) * | 2020-01-23 | 2024-01-17 | 株式会社ジェイテクト | rotary table device |
| JP7212107B2 (en) * | 2021-06-18 | 2023-01-24 | 株式会社牧野フライス製作所 | Rotary table and machine tool equipped with the same |
| JP7353342B2 (en) * | 2021-11-01 | 2023-09-29 | 株式会社日研工作所 | round table device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4009165A1 (en) * | 1990-03-22 | 1991-09-26 | Gottlieb Peiseler Gmbh & Co Kg | Rotary indexing unit for machine tool - has pneumatic braking of spindle mechanically amplified by balls riding on inclined thrust surfaces |
| US5072651A (en) * | 1990-03-19 | 1991-12-17 | Nippon Seiko Kabushiki Kaisha | Direct drive type rotation dividing table |
| CN1628932A (en) * | 2003-11-06 | 2005-06-22 | 津田驹工业株式会社 | Transposition working table |
| CN101687297A (en) * | 2007-10-10 | 2010-03-31 | 津田驹工业株式会社 | Rotary index device in machine tool |
| CN101862972A (en) * | 2009-04-14 | 2010-10-20 | 津田驹工业株式会社 | Lathe is paid device with the rotational resistance of main shaft driving device |
| CN103252681A (en) * | 2012-02-17 | 2013-08-21 | 朴东修 | High-speed efficient numerical control indexing table |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03103130U (en) * | 1990-02-09 | 1991-10-25 | ||
| JP2571220Y2 (en) * | 1991-09-06 | 1998-05-18 | 株式会社小松製作所 | Turntable fixing device |
| JP2570665Y2 (en) * | 1992-11-16 | 1998-05-06 | ブラザー工業株式会社 | Rotary indexing worktable device |
| JP2008114306A (en) * | 2006-10-31 | 2008-05-22 | Yukiwa Seiko Inc | Rotating table device |
| JP5117260B2 (en) * | 2008-04-07 | 2013-01-16 | 津田駒工業株式会社 | Rotational resistance device for spindle drive in machine tool |
| JP5286047B2 (en) * | 2008-11-19 | 2013-09-11 | 津田駒工業株式会社 | Clamping device in spindle drive for machine tool |
| JP2016045099A (en) | 2014-08-25 | 2016-04-04 | パイオニア株式会社 | Terahertz wave measurement device |
-
2016
- 2016-03-09 JP JP2016045099A patent/JP6686554B2/en active Active
-
2017
- 2017-03-07 WO PCT/JP2017/008953 patent/WO2017154886A1/en active Application Filing
- 2017-03-07 DE DE112017001226.0T patent/DE112017001226T5/en active Pending
- 2017-03-07 CN CN201780015709.0A patent/CN108778615B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072651A (en) * | 1990-03-19 | 1991-12-17 | Nippon Seiko Kabushiki Kaisha | Direct drive type rotation dividing table |
| DE4009165A1 (en) * | 1990-03-22 | 1991-09-26 | Gottlieb Peiseler Gmbh & Co Kg | Rotary indexing unit for machine tool - has pneumatic braking of spindle mechanically amplified by balls riding on inclined thrust surfaces |
| CN1628932A (en) * | 2003-11-06 | 2005-06-22 | 津田驹工业株式会社 | Transposition working table |
| CN101687297A (en) * | 2007-10-10 | 2010-03-31 | 津田驹工业株式会社 | Rotary index device in machine tool |
| CN101862972A (en) * | 2009-04-14 | 2010-10-20 | 津田驹工业株式会社 | Lathe is paid device with the rotational resistance of main shaft driving device |
| CN103252681A (en) * | 2012-02-17 | 2013-08-21 | 朴东修 | High-speed efficient numerical control indexing table |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI766466B (en) * | 2020-12-07 | 2022-06-01 | 上銀科技股份有限公司 | Rotary seat and rotary table |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017001226T5 (en) | 2018-12-20 |
| CN108778615B (en) | 2020-11-03 |
| JP6686554B2 (en) | 2020-04-22 |
| JP2017159394A (en) | 2017-09-14 |
| WO2017154886A1 (en) | 2017-09-14 |
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