CN204603903U - A kind of self-centering unit and fixture of hub lathe - Google Patents
A kind of self-centering unit and fixture of hub lathe Download PDFInfo
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- CN204603903U CN204603903U CN201520247434.1U CN201520247434U CN204603903U CN 204603903 U CN204603903 U CN 204603903U CN 201520247434 U CN201520247434 U CN 201520247434U CN 204603903 U CN204603903 U CN 204603903U
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- large cover
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- clamp body
- hub
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Abstract
A kind of self-centering unit and fixture of hub lathe, clamp not strongly solid problem for solving existing Hub fixture to wheel hub.Clamp body fixes aluminum hull, aluminum hull fixes large cover, large cover is provided with some slider support seats, slider support seat is provided with the slide block radially slided along large cover; Be slidably installed blind rivet in clamp body inner chamber, and be slidably installed in the inner chamber of the locating shaft gland on large cover tension axle, is fixed with locating shaft, slide block can be driven when fixed axis moves along own axes to move on the top of tension axle.Between clamp body and large cover, be provided with the support brace doing synchronous linear with blind rivet and move, be provided with some push rods at the edge of support brace; Be provided with the helical axis that can move along own axes and rotate at the edge of large cover, be provided with paw on the top of helical axis.This fixture can realize the radial and axial location to wheel hub, and registration, firm grip.
Description
Technical field
The utility model relates to fixture of hub lathe technical field, specifically a kind of fixture for carrying out wheel hub during machined.
Background technology
In the process of wheel hub, wheel hub radial location precision is very important for the guarantee of wheel hub machining accuracy, and wheel hub whether clamp safety be vital.Existing fixture of hub lathe, repetitive positioning accuracy when can not meet the radial self-centering of wheel hub reliable, there is potential safety hazard and adjustment inconvenience in clamping reliability.Namely fixture can not ensure the axis collinear by the axis of holding workpiece and machine tooling axle.And existing fixture of hub lathe, there is the unstable problem of clamping.
Utility model content
The purpose of this utility model is to provide a kind of self-centering unit and fixture of hub lathe, clamps not strongly solid problem, and ensure hub axis and machine tool chief axis conllinear for solving existing fixture of hub lathe to wheel hub.
The technical scheme in the invention for solving the technical problem is: a kind of self-centering unit, it is characterized in that, it comprises elastomer, wedge, locating shaft, tension axle, locating shaft gland and chuck body, locating shaft gland is fixed with in the bottom of described chuck body, tension axle is slidably fitted with in the inner chamber of described locating shaft gland, locating shaft is fixed with on the top of described tension axle, elastic component is provided with between described tension axle and chuck body, the outer wall of described locating shaft is provided with some T-slot circumferentially evenly arranged, the wedge of some synchronization actions can relative sliding be arranged in corresponding T-slot, and the moving direction of described wedge is orthogonal with the moving direction of tension axle.
Further, described elastomer is spring or disc spring.
A kind of fixture of hub lathe, it is characterized in that, it comprises clamp body, aluminum hull, large cover, support brace, paw and self-centering unit, described clamp body is fixedly connected with machine tool chief axis nose, one end of described aluminum hull is fixed on clamp body, be fixed with large cover at the other end of described aluminum hull, described large cover is provided with some slider support seats circumferentially evenly arranged, and described in each, slider support seat is provided with the slide block that can radially slide along large cover;
Blind rivet is slidably fitted with in the inner chamber of described clamp body, the chuck body of self-centering unit is fixed on the outside of large cover, the wedge of self-centering unit can relative sliding be arranged on large cover, and some described wedges radially sliding respectively along large cover, one end of described wedge is fixedly connected with corresponding slide block;
The support brace doing synchronous linear with blind rivet and move is provided with between described clamp body and large cover, some push rods are provided with at the edge of described support brace, the back-up block of some even settings is provided with, described back-up block and slide block mating reaction supporting wheel hub at the edge of described large cover; The compressing support corresponding with back-up block is also provided with at the edge of described large cover, the helical axis that can move along own axes and rotate is provided with in described compressing support, be provided with the helicla flute coordinated with push rod in the bottom of described helical axis, be provided with the paw pushing down wheel hub with back-up block mating reaction on the top of described helical axis.
Further, in the stroke that described blind rivet one is complete, described helical axis rotates 90 degree.
Further, between described large cover and clamp body, some guide posts be slidably matched with support brace are provided with.
Further, slider support seat described in each is slidably installed the little pressing plate of slide block, and the little pressing plate of described slide block fixedly mounts slide block.
Further, described clamp body is provided with positioning baffle, when blind rivet moves a stroke by large cover to the side at clamp body place, described positioning baffle contacts with support brace and coordinates.
Further, be provided with groove at the top of described blind rivet, the bottom of described tension axle can extend in groove.
Further, between described clamp body and large cover, vent rod is provided with.
Further, described paw is the metalwork of " ┓ " shape.
The beneficial effects of the utility model are: a kind of self-centering unit that the utility model provides and fixture of hub lathe, some slide blocks synchronous slide radially and paw is realized along the movement of blind rivet axis, paw along the rotation of own axes by the axial-movement of blind rivet, some slide block synchronization actions can embrace wheel hub, ensure that axis and the machine tool chief axis axis collinear of wheel hub are arranged simultaneously, there is self-centering function and registration; Some paw synchronization actions, and the stroke of paw is identical, the location that can realize hub axis direction with back-up block mating reaction, ensure that precision wheel hub being added to man-hour.
Accompanying drawing explanation
Fig. 1 is the schematic diagram be placed on by wheel hub on fixture of hub lathe;
Fig. 2 is the state diagram in clamping process;
Fig. 3 is the schematic diagram that wheel hub is in clamp position;
Fig. 4 is the schematic diagram of helical axis;
Fig. 5 is the cross-sectional schematic of locating shaft;
Fig. 6 is the top view of locating shaft;
Fig. 7 is the cross-sectional schematic of wedge;
Fig. 8 is top view of the present utility model;
Fig. 9 is the cross-sectional schematic of tension axle;
In figure: 1 clamp body, 2 sealing shrouds, 3 support braces, 4 aluminum hulls, 5 large covers, 6 slider support seats, the little pressing plate of 7 slide block, 8 slide blocks, 9 radial location blocks, 10 elastic components, 11 wedges, 12 locating shafts, 13 pins, 14 tension axles, 15 locating shaft glands, 16 chuck bodies, 17 leads, 18 vent rods, 19 close toothholders, 20 back-up blocks, 21 paws, 22 compressing supports, 23 helical axis, 24 position blocks, 25 screws, 26 blind rivet glands, 27 blind rivets, 28 inclined-planes, 29 grooves, 30 mounting grooves, 31 taper surfaces.
Detailed description of the invention
As shown in Figure 1, self-centering unit of the present utility model comprises slide block 8, radial location block 9, elastomer 10, wedge 11, locating shaft 12, pin 13, tension axle 14, locating shaft gland 15 and chuck body 16, is described self-centering unit below in conjunction with accompanying drawing.
As shown in Figure 1, the bottom surface of chuck body 16 is installed with elastic component 10 by pin 13, elastic component can be disc spring or spring.Be mounted by means of screws with locating shaft gland 15 in the bottom of chuck body, locating shaft gland is circular hollow metal part, and elastic component can stretch along the axis of locating shaft gland.In the inner chamber of locating shaft gland, be provided with a tension axle 14, tension axle can move up and down in the inner chamber of locating shaft gland.As shown in Figure 9, tension axle is the axial workpiece of hollow, can regard upper and lower two cylindrical assemblys as, and the cylinder external diameter of top is greater than the cylinder external diameter of below.The top of tension axle is fixedly connected with by the bottom of screw with locating shaft 12, is achieved the synchronization lifting of tension axle and locating shaft by the connection of screw.As shown in Figure 5, Figure 6, locating shaft is the axial workpiece of hollow, and locating shaft is provided with screw hole, and the outer wall of locating shaft is provided with some T-slot be circumferentially evenly arranged, and T-slot is obliquely installed and makes in T-slot, form inclined-plane 28.Be provided with mounting groove 30 at the top of tension axle, the bottom of mounting groove is taper surface 31, and the lower end of elastic component is fixed on taper surface.Like this, when tension is axially moved, can overcome the elastic force effect of elastic component, now elastic component is compressed.After cancelling external force, be forced to again move down at the drop-down mandrel of the effect of elastic component.Realize the reset of tension axle.Wedge 11 is slidably fitted with in each T-slot, as shown in Figure 7, another inclined-plane matched with locating shaft ramp is provided with at the effect end of wedge, wedge can move horizontally in vertical plane, tension axle can vertically movement in vertical plane, and the moving direction of wedge is orthogonal with the moving direction of tension axle.When locating shaft rises, slide in the T-slot of some wedges on locating shaft, promote some wedge synchronizing movings, and moving direction is outside along tension Axial and radial.Each wedge is installed with slide block 8, slide block is provided with radial location block 9 by screw, when some wedges synchronously outwards move along the radial direction straining axle, can realize the synchronizing moving of some radial location blocks, and now some radial location blocks are synchronous near tension axle axle center or synchronously away from tension axle axle center.
This self-centering unit, by straining the mobile locating shaft that drives of axle along the movement of own axes, and then promote the synchronizing moving of some wedges, the moving direction of wedge is vertical with the moving direction of locating shaft, because wedge drives the radial location block synchronizing moving of some clamping wheel hubs, the displacement radially of some radial location blocks is identical, and some radial location blocks are positioned at circumferentially same, therefore during some radial location block clamping wheel hubs, can ensure that hub axis is arranged with tension axle axis collinear, namely there is self-centering function.
As shown in Figures 1 to 9, fixture of hub lathe of the present utility model comprises clamp body 1, sealing shroud 2, support brace 3, aluminum hull 4, large cover 5, slider support seat 6, the little pressing plate of slide block 7, self-centering unit, lead 17, vent rod 18, close toothholder 19, back-up block 20, paw 21, compressing support 22, helical axis 23, position block 24, screw 25, blind rivet gland 26 and blind rivet 27, is described in detail fixture of hub lathe below in conjunction with accompanying drawing.
As shown in Figure 1, clamp body 1 is circular hollow metal part, and clamp body is fixedly connected with machine tool chief axis nose, clamp body act as connecting machine tool main shaft and fixture.Aluminum hull 4 is fixedly connected with by screw at the edge of clamp body, aluminum hull is also circular hollow metal part, one end of aluminum hull is fixedly connected with clamp body, large cover 5 has been connected by screw at the other end of aluminum hull, large cover is circular hollow metal part, large cover is installed with three slider support seats 6, and three slider support seats are positioned at circumferentially same.Be provided with the little pressing plate 4 of a slide block in the top slide of each slider support seat, the glide direction of the little pressing plate of each slide block is all consistent with the radial direction of large cover.Some slide blocks of self-centering unit are arranged on the little pressing plate of slide block by screw respectively, for ease of the position of adjusting slider along large cover radial direction, the little pressing plate of slide block is provided with the screw hole of some form arrangements that is in line, slide block is arranged in the screw hole of different radial position, the clamping to different size wheel hub can be realized.The edge of slide block is provided with projection, and projection is used for holding wheel hub.For realizing the slip of the little pressing plate of slide block, in the inner chamber of clamp body, being slidably fitted with blind rivet 27, between blind rivet and clamp body, being provided with sealing ring, to ensure good sealing.Be provided with circular groove 29 in the upper surface of blind rivet, the outer wall on blind rivet top is provided with nosing.Between clamp body and large end cap, be provided with some leads 17, and some leads are positioned at circumferentially same, the two ends of lead are all fixedly connected with clamp body with large cover by screw.Some leads are slidably fitted with support brace 3, and support brace is circular hollow metal part, and lead is through in support brace.The internal chamber wall of support brace is mounted by means of screws with blind rivet gland 26, the inwall of support brace is provided with breach, and the nosing on blind rivet is positioned at this breach, and the upper surface of nosing contacts with the lower surface of blind rivet gland and coordinates, like this when blind rivet moves up and down, just can drive support brace synchronizing moving.Some sealing shrouds 2 are also provided with between clamp body and large cover, some sealing shrouds are positioned at circumferentially same, the bottom of each sealing shroud is screwed on clamp body, the effect of sealing shroud prevents water droplet, chip etc. from entering into space between large cover and clamp body, and the number of slider support seat also can be four or five.
The chuck body 16 of self-centering unit is fixedly mounted on large cover by screw, and the bottom of tension axle can extend in the groove at blind rivet top.In the process that blind rivet rises, first the bottom of tension axle extend in groove, and along with the continuation of blind rivet is risen, the tension lower surface of axle contacts with the bottom land of groove, and blind rivet produces tension axle and upwards pressure.
Be fixed with some compressing supports 22 at the edge placement of large cover, some compressing supports are positioned at circumferentially same.Can move up and down in compressing support and rotatablely be provided with helical axis 23, as shown in Figure 4, the bottom of helical axis is drive end, is provided with helicla flute in the bottom of helical axis.Support brace immediately below helical axis is fixed with the push rod coordinated with helicla flute, spiral fluted is arranged can make helical axis 90-degree rotation.The paw 21 of " ┓ " shape is mounted by means of screws with at spiral fluted top.As shown in Figure 8, be fixed with back-up block 20 being positioned at helical axis on the large cover in same radial direction, acting as of back-up block coordinates supporting wheel hub with slide block.When blind rivet drives tension axially to move, helical axis can be driven to rotate, and when helical axis turns over after 90 degree, paw is eliminated the pressure effect of wheel hub, and helical axis vertically rises subsequently.When blind rivet drives tension axle to move down, helical axis can be driven to rotate, and when helical axis oppositely turns over after 90 degree, helical axis starts vertical decline, until paw is pressed on wheel hub.For realizing spacing to support brace, clamp body has been screwed position block 24, when blind rivet move down arrive range time, the bottom of support brace just contacts with the upper surface of position block and coordinates.
For adapting to expand with heat and contract with cold, between clamp body and large cover, be provided with vent rod 18, large cover is provided with close toothholder 19, back-up block is arranged on close toothholder, can regulate the radial displacement of back-up block, to adapt to the clamping of different size wheel hub on close toothholder.
As shown in Figure 1, during clamping wheel hub, first wheel hub is placed on back-up block and slide block, then blind rivet is driven to move down, as shown in Figure 2, now, tension axle drives locating shaft to move down, by the mating reaction of wedge and locating shaft and then drive that some slide blocks are synchronous to be moved to the inside; On the other hand, support brace moves down, and moves straight down after driving helical axis first to turn over 90 degree again; As shown in Figure 3, when blind rivet is moved down into range, paw and hub contacts also compress wheel hub.On the one hand, wheel hub " is embraced " in slide block and back-up block mating reaction, realizes the radial location to wheel hub; On the other hand, paw pushes down wheel hub, realizes the axial location to wheel hub.Fixture of the present utility model, can realize the radial and axial location to wheel hub, and registration, firm grip.Whole fixture adopts stainless steel to make, the positioning precision when impact of getting rusty of fixture can be avoided to clamp.
Claims (10)
1. a self-centering unit, it is characterized in that, it comprises elastomer, wedge, locating shaft, tension axle, locating shaft gland and chuck body, locating shaft gland is fixed with in the bottom of described chuck body, tension axle is slidably fitted with in the inner chamber of described locating shaft gland, locating shaft is fixed with on the top of described tension axle, elastic component is provided with between described tension axle and chuck body, the outer wall of described locating shaft is provided with some T-slot circumferentially evenly arranged, the wedge of some synchronization actions can relative sliding be arranged in corresponding T-slot, and the moving direction of described wedge is orthogonal with the moving direction of tension axle.
2. a kind of self-centering unit according to claim 1, is characterized in that, described elastomer is spring or disc spring.
3. a fixture of hub lathe, it is characterized in that, it comprises clamp body, aluminum hull, large cover, support brace, paw and self-centering unit, described self-centering unit is the self-centering unit in claim 1 or 2, described clamp body is fixedly connected with machine tool chief axis nose, one end of described aluminum hull is fixed on clamp body, large cover is fixed with at the other end of described aluminum hull, described large cover is provided with some slider support seats circumferentially evenly arranged, and described in each, slider support seat is provided with the slide block that can radially slide along large cover;
Blind rivet is slidably fitted with in the inner chamber of described clamp body, the chuck body of self-centering unit is fixed on the outside of large cover, the wedge of self-centering unit can relative sliding be arranged on large cover, and some described wedges radially sliding respectively along large cover, one end of described wedge is fixedly connected with corresponding slide block;
The support brace doing synchronous linear with blind rivet and move is provided with between described clamp body and large cover, some push rods are provided with at the edge of described support brace, the back-up block of some even settings is provided with, described back-up block and slide block mating reaction supporting wheel hub at the edge of described large cover; The compressing support corresponding with back-up block is also provided with at the edge of described large cover, the helical axis that can move along own axes and rotate is provided with in described compressing support, be provided with the helicla flute coordinated with push rod in the bottom of described helical axis, be provided with the paw pushing down wheel hub with back-up block mating reaction on the top of described helical axis.
4. a kind of fixture of hub lathe according to claim 3, is characterized in that, in the stroke that described blind rivet one is complete, described helical axis rotates 90 degree.
5. a kind of fixture of hub lathe according to claim 3, is characterized in that, is provided with some guide posts be slidably matched with support brace between described large cover and clamp body.
6. a kind of fixture of hub lathe according to claim 3, is characterized in that, slider support seat described in each is slidably installed the little pressing plate of slide block, and the little pressing plate of described slide block fixedly mounts slide block.
7. a kind of fixture of hub lathe according to claim 5, is characterized in that, described clamp body is provided with positioning baffle, and when blind rivet moves a stroke by large cover to the side at clamp body place, described positioning baffle contacts with support brace and coordinates.
8. a kind of fixture of hub lathe according to claim 7, is characterized in that, is provided with groove at the top of described blind rivet, and the bottom of described tension axle can extend in groove.
9. a kind of fixture of hub lathe according to claim 7, is characterized in that, between described clamp body and large cover, be provided with vent rod.
10. a kind of fixture of hub lathe according to claim 3, is characterized in that, described paw is the metalwork of " ┓ " shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247434.1U CN204603903U (en) | 2015-04-22 | 2015-04-22 | A kind of self-centering unit and fixture of hub lathe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247434.1U CN204603903U (en) | 2015-04-22 | 2015-04-22 | A kind of self-centering unit and fixture of hub lathe |
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| CN204603903U true CN204603903U (en) | 2015-09-02 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522425A (en) * | 2016-01-21 | 2016-04-27 | 中信戴卡股份有限公司 | Lathe chuck plate of aluminum alloy hub |
| CN105598726A (en) * | 2016-03-04 | 2016-05-25 | 湖北金麟机械制造有限公司 | Clamping device for brake drum |
| CN105798680A (en) * | 2016-05-01 | 2016-07-27 | 中信戴卡股份有限公司 | Automobile wheel lathe clamp |
| CN107160221A (en) * | 2017-06-02 | 2017-09-15 | 浙江铂动工贸有限公司 | A kind of preventing damage device processed for automotive hub blank |
| CN108297027A (en) * | 2018-02-24 | 2018-07-20 | 中信戴卡股份有限公司 | A kind of airtight cushion rubber press-loading apparatus of wheel |
| EP3492203A1 (en) * | 2017-11-30 | 2019-06-05 | Citic Dicastal Co., Ltd. | Lathe fixture for clamping automobile hub |
| CN110103054A (en) * | 2019-05-22 | 2019-08-09 | 泛科轴承集团有限公司 | Automatic clamping device |
| CN112692622A (en) * | 2021-01-05 | 2021-04-23 | 江苏速力达精密科技有限公司 | Flexible machining clamp for automobile hub |
| CN112729677A (en) * | 2020-12-30 | 2021-04-30 | 杭州集智机电股份有限公司 | Test clamping device for hub balancing machine |
| CN115284041A (en) * | 2022-07-29 | 2022-11-04 | 中信戴卡股份有限公司 | Special flexible clamping device for wheel |
-
2015
- 2015-04-22 CN CN201520247434.1U patent/CN204603903U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522425A (en) * | 2016-01-21 | 2016-04-27 | 中信戴卡股份有限公司 | Lathe chuck plate of aluminum alloy hub |
| CN105598726A (en) * | 2016-03-04 | 2016-05-25 | 湖北金麟机械制造有限公司 | Clamping device for brake drum |
| CN105798680A (en) * | 2016-05-01 | 2016-07-27 | 中信戴卡股份有限公司 | Automobile wheel lathe clamp |
| CN107160221A (en) * | 2017-06-02 | 2017-09-15 | 浙江铂动工贸有限公司 | A kind of preventing damage device processed for automotive hub blank |
| EP3492203A1 (en) * | 2017-11-30 | 2019-06-05 | Citic Dicastal Co., Ltd. | Lathe fixture for clamping automobile hub |
| US10525533B2 (en) | 2017-11-30 | 2020-01-07 | Citic Dicastal Co., Ltd | Lathe fixture for clamping automobile hub |
| CN108297027B (en) * | 2018-02-24 | 2023-10-24 | 中信戴卡股份有限公司 | Wheel airtight rubber ring press-fitting device |
| CN108297027A (en) * | 2018-02-24 | 2018-07-20 | 中信戴卡股份有限公司 | A kind of airtight cushion rubber press-loading apparatus of wheel |
| CN110103054A (en) * | 2019-05-22 | 2019-08-09 | 泛科轴承集团有限公司 | Automatic clamping device |
| CN110103054B (en) * | 2019-05-22 | 2024-02-02 | 泛科轴承集团有限公司 | Automatic clamping device |
| CN112729677A (en) * | 2020-12-30 | 2021-04-30 | 杭州集智机电股份有限公司 | Test clamping device for hub balancing machine |
| CN112692622A (en) * | 2021-01-05 | 2021-04-23 | 江苏速力达精密科技有限公司 | Flexible machining clamp for automobile hub |
| CN115284041A (en) * | 2022-07-29 | 2022-11-04 | 中信戴卡股份有限公司 | Special flexible clamping device for wheel |
| CN115284041B (en) * | 2022-07-29 | 2023-11-07 | 中信戴卡股份有限公司 | Special flexible clamping device for wheels |
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