CN208322812U - Mechanical expansion core fixture - Google Patents
Mechanical expansion core fixture Download PDFInfo
- Publication number
- CN208322812U CN208322812U CN201820823902.9U CN201820823902U CN208322812U CN 208322812 U CN208322812 U CN 208322812U CN 201820823902 U CN201820823902 U CN 201820823902U CN 208322812 U CN208322812 U CN 208322812U
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- China
- Prior art keywords
- core
- expansion core
- expansion
- bearing
- ring flange
- Prior art date
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Abstract
The utility model discloses a kind of mechanical expansion core fixtures, are related to machining equipment technical field.The mechanical expansion core fixture is mounted on the part that need to be processed on machine tool chief axis for clamping, it include: expansion core core, expansion core core print, ring flange and drag link mechanism, the expansion core core is fixed on the ring flange, the ring flange is fixed on the machine tool chief axis, the expansion core core is the axle sleeve that a diameter can be changed, centre bore is provided on the ring flange, the expansion core core print is passed through inside the expansion core core and is connected on the drag link mechanism after the centre bore of the ring flange, the drag link mechanism drives the expansion core core print to move on the expansion core core axis, make the dimension enlargement of the expansion core core or restores to load and unload the part.Mechanical expansion core clamp structure is simple, convenient for disassembly and assembly, accurate positioning, can clamping different inner diameters hole part, particularly suitable for processing internal-external circle concentricity and the demanding precision component of the grade of tolerance.
Description
Technical field
The utility model relates to machining equipment technical field, especially a kind of mechanical expansion core fixture.
Background technique
Existing Excircle machining fixture is mainly based on three-jaw, spring perch, and the fixture of this structure is the disadvantage is that clamping takes
When it is laborious, over time, fixture itself can slowly deviate machine tool chief axis center, increase the geometric tolerance of processing part
Greatly.And in machinery production, often length is shorter with lining cover parts for many axis, and inner hole is smaller, internal-external circle concentricity and tolerance
Class requirement is high, and such part is after finishing of internal diameter, then with general three-jaw, spring perch clamping processing excircles, it tends to be difficult to
Guarantee quality.It the use of expansion clamp is often most for processing such internal-external circle concentricity and the demanding part of the grade of tolerance
Good selection.Expansion clamp is called expanding arbor, point mechanical, vapour-pressure type, fluid pressure type three categories.
It mechanically include three tile-type, sliding sleeve type etc., three tile-type are to make tile along mandrel in member urges such as nuts by tile
Radially inner and outer movement changes diameter to realize harmomegathus；Sliding sleeve type is combined by braking tongue block on set and peripheral tubular object precision
Transmit torque, tongue piece is by spring ejection；There are gear piece or steel ball there are also a kind of sliding sleeve peripheral band, radially withstands outer tube by gear piece
Torque is transmitted, steel ball makes steel ball hold out against outer tube transmitting torque by the space of gradual change.
Vapour-pressure type is that air bag is arranged in hollow steel tube, is arranged with tongue of metal, tongue piece warp in the periphery etc. of air bag
The kidney ellipsoid window and external contact reserved on steel pipe are crossed, tongue piece is extended or retracted whether inflation with air bag, when stretching then and outside
Pipe tensioner, when retraction, then loosen with outer tube, so being called gas expansion shaft.
Fluid pressure type is to seal both ends using two concentric drums and form a columnar cavity, hydraulic oil in cylinder
One of them to being full of, and oil liquid is carried out to apply certain pressure, this pressure will pass to oil with equal numerical value
Each position of chamber.If the outer tube wall of the two concentric cylinders is done it is thin, after it is under pressure, will outward it is swollen
Swollen, according to the thin-walled that this is deformed, the swelling to inner hole may be implemented.
Structure is complicated for fluid pressure type expansion clamp and vapour-pressure type expansion clamp, high production cost, maintenance difficult.
Utility model content
Simple, convenient for disassembly and assembly, accurate positioning that the purpose of this utility model is to provide a kind of structures, energy clamping different inner diameters
The mechanical expansion core fixture of hole part, for processing internal-external circle concentricity and the demanding precision component of the grade of tolerance.
In order to achieve the above object, the utility model provides a kind of mechanical expansion core fixture, the mechanical expansion core folder
Tool is mounted on the part that need to be processed on machine tool chief axis for clamping, and the mechanical expansion core fixture includes: expansion core core, expansion core core
Head, ring flange and drag link mechanism, the expansion core core are fixed on the ring flange, and the ring flange is fixed on the machine
On bed main shaft, the expansion core core is the axle sleeve that a diameter can be changed, and is provided with centre bore, the expansion core core print on the ring flange
It is connected on the drag link mechanism inside the expansion core core and after the centre bore of the ring flange, the drag link mechanism band
It moves the expansion core core print to move on the expansion core core axis, make the dimension enlargement of the expansion core core or restores to load and unload
State part.
Optionally, the mechanical expansion core fixture includes a series of expansion core core of different dimensions, to be applicable in
In the part of clamping difference dimensions.
Optionally, the expansion core core includes flange flange disc portion and axle sleeve part, and shown flange flange disc portion is used
It is fixedly connected in the ring flange, the axle sleeve part sets up separately around the shaft sleeve part for part described in clamping and is equipped with number
The through slot that item extends in the axial direction, the perforation groove depth extend to the inner hole of expansion core core 10, and the expansion core core print is worn
The expansion core core is crossed, under drag link mechanism drive, the expansion core core axle sleeve portion size is swollen or is restored to fill
Unload the part.
Optionally, the slot centre bore aperture of one end of the expansion core core is taper, be provided on the expansion core core print with
The cone of the ostium, the cone and the ostium, under drag link mechanism drive, the expansion core core print will
Expansion core core one end size of slotting swells or restores to load and unload the part.
Optionally, the ring flange includes large flange disk and small flange plate, and the large flange disk and small flange plate are coaxially solid
Even, the expansion core core installation is fixed on the small flange plate after connection, and the large flange disk is fixed on the machine tool chief axis
On.
Optionally, the drag link mechanism includes: pull rod, spindle tube and rivet holder lid, and main shaft is arranged in the machine tool chief axis center
Hole, the machine tool chief axis are main shaft tail end far from described flange one end, and described spindle tube a part is inserted into from the main shaft tail end
The spindle hole, the small outer circle of rivet holder lid pack into the nozzle that the spindle tube exposes the main shaft bore portion, the pull rod from
The spindle tube passes through, and described pull rod one end connects the expansion core core print, and the other end passes through the rivet holder lid, and the pull rod tightens
Paste the rivet holder outer side of lid setting stop nut makes it can not be far from the ring flange to limit the spindle tube.
Optionally, the drag link mechanism further includes being fixed on the spindle tube to expose on the outer diameter of the main shaft bore portion
Cone disk, the abutting cone disk are fixed on the receipts power pawl on the main shaft tail end, and cover close to the receipts power pawl in the lathe
Bearing block on main shaft, the bearing block slide on the spindle tube, drive the mechanism connection for receiving power pawl and the cone disk
It is dynamic to move the pull rod on the spindle tube axis.
Optionally, setting is cased with bearing on the bearing block, is provided with the support of bearing outside the bearing, and the bearing is by institute
It states bearing block and the support of bearing is flexibly connected, revolute pair, the rotation are set between the bearing and the support of bearing
Pair is arranged in the middle part of the support of bearing by the bearing diameter direction, and described support of bearing one end and lathe are hinged, another
End swings centered on perpendicular to the main shaft tube axis direction, and then drives the bearing block in the spindle tube axis
Side moves upwards.
Optionally, the spindle tube is provided with axle sleeve close to described ring flange one end, one section of pull rod on the outside of the axle sleeve
On be provided with step, compressed spring is set between the axle sleeve and the step.
Optionally, described support of bearing one end and lathe are hinged, and the other end connects handle, and the handle extends to lathe
Outside, operating the handle drives the support of bearing that it is made to swing centered on perpendicular to the main shaft tube axis direction.
The beneficial effects of the utility model are: mechanical expansion core clamp structure is simple, convenient for disassembly and assembly, accurate positioning, can fill
Different inner diameters hole part is pressed from both sides, particularly suitable for processing internal-external circle concentricity and the demanding precision component of the grade of tolerance.
Detailed description of the invention
Fig. 1 is the mechanical expansion core clamp structure schematic diagram that an embodiment of the present invention provides.
Fig. 2 is the mechanical expansion core fixture sectional structure schematic diagram that an embodiment of the present invention provides.
Wherein: 10- expansion core core, 20- expansion core core print, 30- ring flange, 31- small flange plate, 32- large flange disk, 40- are drawn
Linkage, the 41- support of bearing, 42- bearing, 43- bearing block, 44- spindle tube, 45- stop nut, 46- rivet holder lid, 47- pull rod,
48- bores disk, and 49- receives power pawl, 50- axle sleeve, 60- compressed spring, 70- part, 80- machine tool chief axis.
Specific embodiment
Specific embodiment of the present utility model is described in more detail below in conjunction with schematic diagram.It is retouched according to following
It states and claims, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing is all made of very simplification
Form and use non-accurate ratio, only to it is convenient, lucidly aid in illustrating the purpose of the utility model embodiment.
The utility model provides a kind of mechanical expansion core fixture, the mechanical expansion core clamp structure is simple, it is convenient for disassembly and assembly,
Accurate positioning, can clamping different inner diameters holes part mechanical expansion core fixture, particularly suitable for processing internal-external circle concentricity and
The demanding precision component of the grade of tolerance.
Fig. 1 is the mechanical expansion core clamp structure schematic diagram that an embodiment of the present invention provides, the mechanical expansion core folder
Tool is mounted on the part that need to be processed on machine tool chief axis for clamping.As shown in Figure 1, the mechanical expansion core fixture includes: expansion core
Core 10, expansion core core print 20, ring flange 30 and drag link mechanism 40, the expansion core core are fixed on the ring flange 30,
The ring flange 30 is fixed on the machine tool chief axis, and the expansion core core 10 is the axle sleeve that a diameter can be changed, the ring flange
Centre bore is provided on 30, after the expansion core core print 20 passes through the centre bore of 10 inside of expansion core core and the ring flange 30
It is connected on the drag link mechanism 40, the drag link mechanism 40 drives the expansion core core print 20 on 10 axis of expansion core core
Movement makes the dimension enlargement of the expansion core core 10 or restores to load and unload the part 70.As those skilled in the art, it is easy
Understand, the expansion core core, the expansion core core print and the ring flange are all revolving bodies, to guarantee that processing inside and outside circle is coaxial
Degree and the demanding precision component of the grade of tolerance, the axis of the expansion core core, the expansion core core print and the ring flange three
It is overlapped.In the present embodiment, the ring flange 30 and the machine tool chief axis 80 are using being threadedly coupled, with fixed lock after connection
Tightly, thread looseness during the machine tool chief axis positive and negative rotation is prevented.
In the present embodiment, the mechanical expansion core fixture includes a series of expansion core core of different dimensions
10, to be suitable for the part 70 of clamping difference dimensions.It is easily understood that the expansion core core 10 is that mechanical steel becomes
Diameter set, diameter variable amplitude is smaller, therefore to process the part 70 of different dimensions, the mechanical expansion core fixture should
It is equipped with a series of expansion core core 10 of different dimensions.
As shown in Fig. 2, the expansion core core 10 includes flange flange disc portion and axle sleeve part, shown flange flange pan portion
Divide for being fixedly connected with the ring flange 30, the axle sleeve part is for part 70 described in clamping, around the axle sleeve part
It is provided with several through slots extended in the axial direction.The perforation groove depth extends to the inner hole of expansion core core 10, described swollen
Core core print 20 passes through the expansion core core 10, under the drag link mechanism 40 drive, by the 10 axle sleeve part ruler of expansion core core
It is very little to swell or restore to load and unload the part 70.It is easily understood that the shaft sleeve part sets up separately, to set the through slot be to make
The axle sleeve portion size can swell, to realize that diameter is variable.
Fig. 2 is the mechanical expansion core fixture sectional structure schematic diagram that an embodiment of the present invention provides.As shown in Fig. 2, institute
The centre bore aperture for stating the fluting of expansion core core 10 one end is taper, is provided with and the ostium on the expansion core core print 20
Cone, the cone and the ostium, under the drag link mechanism 40 drive, the expansion core core print 20 is by the expansion core core
The fluting one end size of body 10 swells or restores to load and unload the part 70.
As shown in Fig. 2, the ring flange includes large flange disk 32 and small flange plate 31, the large flange disk 32 and small flange
Disk 31 is coaxially connected, and the installation of expansion core core 10 is fixed on the small flange plate 31 after connection, and the large flange disk 32 is solid
It is scheduled on the machine tool chief axis.The large flange disk is equipped with 3 M8 threaded holes for being uniformly distributed (120 ° one i.e. every), described
32 inner diameter size of large flange disk is identical as 31 outer diameter of small flange plate, and the small flange plate 31 is equipped with 3 and is uniformly distributed (i.e. often
120 ° one) through-hole, the large flange disk 32 and institute's small flange plate 31 are connected by screw to fixation.With the large flange disk 32
Similar with 31 connection structure of small flange plate, the expansion core core 10 and the small flange 31 are connected and fixed also by screw.
As shown in Fig. 2, the drag link mechanism 40 includes: pull rod 47, spindle tube 44, stop nut 45 and rivet holder lid 46, institute
80 center of machine tool chief axis setting spindle hole is stated, the machine tool chief axis 80 is main shaft tail end, the main shaft far from described flange one end
44 a part of pipe is inserted into the spindle hole from the main shaft tail end, and the small outer circle of rivet holder lid packs into described in the spindle tube exposing
The nozzle of main shaft bore portion, the pull rod 47 are passed through from the spindle tube 44, and described 47 one end of pull rod connects the expansion core core print
20, the other end passes through the rivet holder lid 46, is close to that stop nut 45 is arranged on the outside of the rivet holder lid 46 on the pull rod 47 to limit
Making the spindle tube 44 makes it can not be far from the ring flange 30.
As shown in Fig. 2, the drag link mechanism 40 further includes being fixed on the spindle tube 44 to expose the main shaft bore portion
Cone disk 48 on outer diameter is close to the cone disk 48 and is fixed on the receipts power pawl 49 on the main shaft tail end, and close to the receipts power
49 sets of pawl in 80 top chock 43 of machine tool chief axis, the bearing block 43 slides on the machine tool chief axis 80, described in drive
The mechanism linkage for receiving power pawl 49 and the cone disk 48 moves the pull rod 47 on 44 axis of spindle tube.In the present embodiment
In, as priority scheme, the cone disk 48 and the receipts power pawl 49 are to screw thread forms and screw in spindle tube 44.The bearing
Seat 43 slides on the machine tool chief axis 44, and 49 mechanism of Shou Lizhao is driven to link, the receipts power pawl 49 and the cone disk 48
On cone match, and then drive pull rod 47 move it on 44 axis of spindle tube.
As depicted in figs. 1 and 2, the drag link mechanism 40 further includes the bearing 42 being arranged on the bearing block 43 and setting
The bearing block 42 and the support of bearing 41 are flexibly connected by the support of bearing 41 outside the bearing 42, the bearing 42,
Revolute pair is set between the bearing 42 and the support of bearing 41, and the revolute pair is arranged by 42 diametrical direction of bearing
At 41 middle part of the support of bearing, described 41 one end of the support of bearing and lathe are hinged, and the other end is perpendicular to the spindle tube 44
It swings centered on axis direction, and then the bearing block 43 is driven to move on 44 axis direction of spindle tube.
As depicted in figs. 1 and 2, the spindle tube 44 is provided with axle sleeve 50, the axle sleeve close to described 30 one end of ring flange
It is provided with step on one section of pull rod 47 in 50 outsides, compressed spring 60 is set between the axle sleeve and the step.
As depicted in figs. 1 and 2, described 41 one end of the support of bearing and lathe are hinged, and the other end connects handle, and the handle prolongs
It reaches outside lathe, operates the handle and the support of bearing 41 is driven to make it perpendicular in 44 axis direction of spindle tube
The heart swings.
To sum up, in a kind of mechanical expansion core fixture provided by the embodiment of the utility model, the mechanical expansion core fixture
It include: expansion core core, expansion core core print, ring flange and drag link mechanism, the expansion core core is fixed on the ring flange, institute
It states ring flange to be fixed on the machine tool chief axis, the expansion core core is a variable diameters axle sleeve, is provided on the ring flange
Heart hole, the expansion core core print pass through inside the expansion core core and are connected to the drag link mechanism after the centre bore of the ring flange
On, the drag link mechanism drives the expansion core core print to move on the expansion core core axis, makes the size of the expansion core core
Expand or restores to load and unload the part.The drag link mechanism includes: the support of bearing, bearing, bearing block, spindle tube, limit spiral shell
Mother, rivet holder lid, pull rod, cone disk and receipts power pawl, described support of bearing one end and lathe are hinged, and the other end connects handle, the hand
Handle extends to outside lathe, and operating the handle makes the linkage of drag link mechanism mechanism drive the expansion core core movement, finally makes described
The dimension enlargement of expansion core core is restored to load and unload the part.
The preferred embodiment that above are only the utility model, does not play the role of any restrictions to the utility model.
Any person of ordinary skill in the field, in the range of not departing from the technical solution of the utility model, to the utility model
The technical solution and technology contents of exposure make the variation such as any type of equivalent replacement or modification, belong to without departing from the utility model
Technical solution content, still fall within the protection scope of the utility model.
Claims (10)
1. a kind of mechanical expansion core fixture, the mechanical expansion core fixture is mounted on need to process on machine tool chief axis for clamping zero
Part characterized by comprising expansion core core, expansion core core print, ring flange and drag link mechanism, the expansion core core are fixed on
On the ring flange, the ring flange is fixed on the machine tool chief axis, and the expansion core core is the axle sleeve that a diameter can be changed, institute
It states and is provided with centre bore on ring flange, the expansion core core print passes through inside the expansion core core and after the centre bore of the ring flange
It is connected on the drag link mechanism, the drag link mechanism drives the expansion core core print to move on the expansion core core axis, makes
The dimension enlargement of the expansion core core is restored to load and unload the part.
2. a kind of mechanical expansion core fixture according to claim 1, which is characterized in that the mechanical expansion core fixture includes
A series of expansion core core of difference dimensions, to be suitable for the part of clamping difference dimensions.
3. a kind of mechanical expansion core fixture according to claim 1, which is characterized in that the expansion core core includes that flange is convex
Edge disc portion and axle sleeve part, shown flange flange disc portion for being fixedly connected with the ring flange, use by the axle sleeve part
The part described in clamping sets up separately around the shaft sleeve part and is equipped with several through slots extended in the axial direction, the perforation groove depth
Degree extends to the inner hole of expansion core core, and the expansion core core print passes through the expansion core core, under drag link mechanism drive, by institute
Expansion core core axle sleeve portion size is stated to swell or restore to load and unload the part.
4. a kind of mechanical expansion core fixture according to claim 3, which is characterized in that the expansion core core is slotted one end
Centre bore aperture is taper, and the cone with the ostium, the cone and the aperture are provided on the expansion core core print
Cooperation, the drag link mechanism drive under, the expansion core core print by the expansion core core slot one end size swell or restore with
Load and unload the part.
5. a kind of mechanical expansion core fixture according to claim 1, which is characterized in that the ring flange includes large flange disk
And small flange plate, the large flange disk and small flange plate are coaxially connected, the expansion core core installation is fixed to described small after connection
On ring flange, the large flange disk is fixed on the machine tool chief axis.
6. a kind of mechanical expansion core fixture according to claim 1, which is characterized in that the drag link mechanism include: pull rod,
Spindle hole is arranged in spindle tube and rivet holder lid, the machine tool chief axis center, and the machine tool chief axis is main shaft far from described flange one end
Tail end, described spindle tube a part are inserted into the spindle hole from the main shaft tail end, and the small outer circle of rivet holder lid packs into the master
Central siphon exposes the nozzle of the main shaft bore portion, and the pull rod is passed through from the spindle tube, and pull rod one end connection is described swollen
Core core print, the other end pass through the rivet holder lid, and the rivet holder outer side of lid setting stop nut is close on the pull rod to limit
Stating spindle tube makes it can not be far from the ring flange.
7. a kind of mechanical expansion core fixture according to claim 6, which is characterized in that the drag link mechanism further includes fixing
It is fixed on the main shaft tail end in cone disk, the abutting cone disk on the outer diameter that the spindle tube exposes the main shaft bore portion
Receipts power pawl, and cover the bearing block on the machine tool chief axis close to the receipts power pawl, the bearing block is in the spindle tube
Upper sliding drives the mechanism linkage for receiving power pawl and the cone disk to move the pull rod on the spindle tube axis.
8. a kind of mechanical expansion core fixture according to claim 7, which is characterized in that the drag link mechanism further includes setting
On the bearing block bearing and the support of bearing that is arranged in outside the bearing, the bearing is by the bearing block and the axis
Bracket flexible connection is held, revolute pair is set between the bearing and the support of bearing, the revolute pair is straight by the bearing
Diameter direction is arranged in the middle part of the support of bearing, and described support of bearing one end and lathe are hinged, and the other end is perpendicular to the master
Shaft tube axis swings centered on direction, and then the bearing block is driven to move on the main shaft tube axis direction.
9. a kind of mechanical expansion core fixture according to claim 8, which is characterized in that the spindle tube is close to the flange
Disk one end is provided with axle sleeve, is provided with step on one section of pull rod on the outside of the axle sleeve, sets between the axle sleeve and the step
Set compressed spring.
10. a kind of mechanical expansion core fixture according to claim 8, which is characterized in that described support of bearing one end and machine
Bed is hinged, and the other end connects handle, and the handle extends to outside lathe, operate the handle drive the support of bearing make its with
Perpendicular to swinging centered on the main shaft tube axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820823902.9U CN208322812U (en) | 2018-05-30 | 2018-05-30 | Mechanical expansion core fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820823902.9U CN208322812U (en) | 2018-05-30 | 2018-05-30 | Mechanical expansion core fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208322812U true CN208322812U (en) | 2019-01-04 |
Family
ID=64772280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820823902.9U Expired - Fee Related CN208322812U (en) | 2018-05-30 | 2018-05-30 | Mechanical expansion core fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208322812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666686A (en) * | 2019-11-11 | 2020-01-10 | 安阳德一机床附件制造有限公司 | Tensioning mechanism of rear-pull main shaft |
| CN114012383A (en) * | 2021-11-11 | 2022-02-08 | 昂华（上海）自动化工程股份有限公司 | Variable-diameter charging barrel for assembling engine piston ring and charging method thereof |
-
2018
- 2018-05-30 CN CN201820823902.9U patent/CN208322812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666686A (en) * | 2019-11-11 | 2020-01-10 | 安阳德一机床附件制造有限公司 | Tensioning mechanism of rear-pull main shaft |
| CN114012383A (en) * | 2021-11-11 | 2022-02-08 | 昂华（上海）自动化工程股份有限公司 | Variable-diameter charging barrel for assembling engine piston ring and charging method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190104 Termination date: 20200530 |