CN219881906U - Positioning chuck for hub machining - Google Patents
Positioning chuck for hub machining Download PDFInfo
- Publication number
- CN219881906U CN219881906U CN202321712369.6U CN202321712369U CN219881906U CN 219881906 U CN219881906 U CN 219881906U CN 202321712369 U CN202321712369 U CN 202321712369U CN 219881906 U CN219881906 U CN 219881906U
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- Prior art keywords
- positioning
- hub
- radial
- tensioning
- sliding
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- 238000003754 machining Methods 0.000 title claims description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims description 19
- 210000000078 claw Anatomy 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a positioning chuck for hub processing, which relates to the technical field of hub processing and comprises a disc body, wherein an axial positioning mechanism and a radial positioning mechanism which are arranged corresponding to a hub blank are arranged on the disc body, the radial positioning mechanism comprises a sliding arm which is in radial sliding fit with the disc body, one end of the sliding arm is provided with a radial positioning block corresponding to the outer edge of the hub, the other end of the sliding arm is provided with a through hole in the vertical direction, a tensioning block which is in axial sliding fit with the disc body is provided with a wedge corresponding to the through hole, a plurality of positioning bulges which are arranged corresponding to the outer edge of the hub blank are fixedly connected to the radial positioning block, and the radial positioning block is connected with the sliding arm. According to the utility model, through optimizing the radial positioning mechanism and the tensioning device, the problems of poor practicality and insufficient positioning precision in the use process of the existing chuck are solved, the whole structure of the chuck is simplified, the structural layout is optimized, and the inspection and maintenance operation of the device is facilitated.
Description
Technical Field
The utility model relates to the technical field of hub machining, in particular to a positioning chuck for hub machining.
Background
In the machining process of the aluminum alloy hub, an aluminum alloy hub blank is usually placed on a chuck to be positioned and clamped, and then turning is completed through a numerical control lathe. Because the hub blank is objectively influenced by the deformation of the heat treatment of the preamble, the metal machining allowance and the difference of different dies, the positioning and clamping operations are particularly important when the blank is assembled and clamped, and the poor positioning in the process of assembling and clamping the hub blank can generate machining quality defects such as over-tolerance in size and even cause waste products.
The Chinese patent document with publication number of CN205290486U discloses an aluminum alloy hub lathe chuck, which improves the problem of poor positioning of hub blanks to a certain extent. However, the chuck has the following defects in the actual use process:
1. the structure is relatively complex, the radial positioning mechanism and the axial positioning mechanism are linked, the action stroke of the radial positioning mechanism is often smaller than that of the axial positioning mechanism in the actual production process, the radial positioning mechanism and the axial positioning mechanism are linked through parts such as a pull rod shaft, a wedge taper sleeve and the like, the requirements on the machining and assembly precision of parts are high in the implementation process, the debugging and later maintenance cost is high, and the practicability is poor.
2. The radial positioning structure is a positioning block which is circumferentially distributed, the contact area between the positioning block and the outer edge of the hub blank is small, the positioning precision is difficult to ensure, and the quality risk of poor radial positioning still exists in the process of clamping the hub blank.
Based on the above, developing a hub positioning chuck with better practicability and higher positioning precision to be applied to production practice is a technical problem to be solved currently.
Disclosure of Invention
The utility model aims to solve the problems that the existing hub chuck is complex in structure, poor in practicability and high in debugging and maintenance cost, and meanwhile, the problem that the existing hub chuck is insufficient in radial positioning precision in the use process is solved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the positioning chuck for hub machining comprises a disc body, wherein an axial positioning mechanism and a radial positioning mechanism which are arranged corresponding to a hub blank are arranged on the disc body; the axial positioning mechanism comprises a crank pressing claw for pressing a wheel hub blank, the lower end of the crank pressing claw is hinged with a tensioning plate, the tensioning plate is axially and slidably connected with the disc body, a long hole is formed in the crank pressing claw, a pin shaft is fixedly arranged on the disc body corresponding to the long hole, the pin shaft penetrates through the long hole of the crank pressing claw and is slidably matched with the long hole, and a connecting hole site for connecting a tensioning device is reserved in the tensioning plate; the radial positioning mechanism comprises a sliding arm which is in radial sliding fit with the disc body, one end of the sliding arm is provided with a radial positioning block corresponding to the outer edge of the hub, the other end of the sliding arm is provided with a through hole in the vertical direction, a tensioning block which is in axial sliding fit with the disc body is provided with a wedge corresponding to the through hole, and the tensioning block is provided with a threaded hole for connecting a tensioning device.
Preferably, the lower end of the tray body extends to form a guide column, the tensioning plate is provided with a guide hole corresponding to the guide column, and the guide column is in sliding fit with the guide hole.
Preferably, the tensioning device adopts a positioning chuck for hub processing or a combination of the positioning chuck, wherein the positioning chuck is used for hub processing and is one of an electric push rod, a pneumatic push rod and a hydraulic push rod, and the tensioning device is respectively arranged corresponding to the tensioning plate and the tensioning block.
Preferably, the tensioning device is of a double-shaft oil cylinder structure, two pull rods in the double-oil cylinder structure are respectively connected with the tensioning plate and the tensioning block, a large oil cylinder pull rod in the double-oil cylinder structure is connected with a connecting hole site of the tensioning plate, and a small oil cylinder railing and the large oil cylinder are coaxially arranged and penetrate through a threaded hole of the large oil cylinder to be connected with the tensioning block.
Preferably, the radial positioning block comprises a positioning base connected with the sliding arm, a plurality of positioning bulges corresponding to the outer edge of the hub blank are fixedly connected to the positioning base, and the positioning bulges are circumferentially distributed along the outer edge of the hub blank.
Preferably, the positioning base is connected with the sliding arm in a sliding way along the radial direction, a sliding groove is formed in the sliding arm, a sliding rail is arranged on the positioning base corresponding to the sliding groove, and a pressure spring is arranged in the sliding groove corresponding to the positioning base and used for providing pretightening force of the positioning base towards the center of the disc body.
Preferably, the radial positioning block and the sliding arm are in sliding connection in a matching mode of the T-shaped groove and the T-shaped sliding rail or in a dovetail groove matching mode.
Preferably, the radial positioning mechanism is provided with three sets of radial equidistant arrays along the disc body, and each positioning base is respectively provided with two positioning protrusions.
The utility model has the beneficial effects that:
according to the utility model, through optimizing the radial positioning mechanism and the tensioning device, the problems of poor practicality and insufficient positioning precision in the use process of the existing chuck are solved, the whole structure of the chuck is simplified, the structural layout is optimized, and the inspection and maintenance operation of the device is facilitated. Simultaneously, radial locating piece and wiper swing joint make radial locating piece pass through for the radial displacement of wiper in the location in-process, and the radial poor positioning problem that defects such as deckle edge and thermal treatment warp brought is absorbed to a certain extent, has promoted the suitability of chuck, has avoided the pure rigid connection between the structure, has prolonged chuck life.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic three-dimensional structure of the present utility model.
Fig. 2 and 3 are three-dimensional cross-sectional structure views of the present utility model.
In the figure: 1- -a tray body; 2- -an axial positioning mechanism; 21- -crank hold-down; 22—a tensioning plate; 221- -a connection hole site; 23- -a pin; 24- -a guide post; 3- -radial positioning mechanism; 31- -a slider; 32- -radial positioning blocks; 321—a positioning base; 322—positioning projections; 323—a chute; 324—a slide rail; 325—a compression spring; 33—a tensioning block; 331—threaded holes; 34- -a ramp; 4- -a hub blank; 5- -connecting seat.
Detailed Description
As shown in fig. 1-3, a positioning chuck for hub processing comprises a disc body 1, wherein an axial positioning mechanism 2 and a radial positioning mechanism 3 which are arranged corresponding to a hub blank 4 are arranged on the disc body 1, the axial positioning mechanism 2 comprises a crank pressing claw 21 for pressing the hub blank 4, the lower end of the crank pressing claw 21 is hinged to a tensioning plate 22, and the tensioning plate 22 is in axial sliding connection with the disc body 1. Specifically, a long hole is formed in the crank pressing claw 21, a pin 23 is fixedly arranged on the disc body 1 corresponding to the long hole, and the pin 23 penetrates through the long hole of the crank pressing claw 21 and is in sliding fit with the long hole; the lower end of the tray body 1 is extended with a guide post 24, the tensioning plate 22 is provided with a guide hole corresponding to the guide post 24, the guide post 24 is in sliding fit with the guide hole, and a connecting hole site 221 for connecting a tensioning device (not shown in the figure) is reserved on the tensioning plate 22. When the tightening device is used, the tightening device pulls the tightening plate 22 to move downwards along the guide column 24 through the connecting hole site 221, and the tightening plate 22 drives the crank pressing claw 21 to move downwards synchronously, so that the pressing force of the upper end of the crank pressing claw 21 for pressing the outer edge of the hub is formed.
The radial positioning mechanism 3 comprises a sliding arm 31 which is in radial sliding fit with the disc body 1, one end of the sliding arm 31 is provided with a radial positioning block 32 corresponding to the outer edge of the hub and used for realizing radial positioning against the outer edge of the hub blank 4, the other end of the sliding arm 31 is provided with a through hole in the vertical direction, a tensioning block 33 which is in axial sliding fit with the disc body 1 is provided with a wedge 34 corresponding to the through hole, and the inclined surface of the wedge 34 is in sliding fit with the through hole to form the power for radial sliding of the sliding arm 31. The tensioning block 33 is provided with a threaded hole 331 for connecting a tensioning device. When the wheel hub blank 4 is used, the tensioning device is connected with the tensioning block 33 through the threaded hole 331, the tensioning block 33 is pulled to move downwards and the inclined iron 34 is driven to move downwards synchronously, so that sliding friction occurs between the inclined surface of the inclined iron 34 and the through hole of the sliding arm 31, the sliding arm 31 is driven to translate towards the center direction, and finally the wheel hub blank 4 is abutted against the outer edge of the wheel hub blank 4, and the radial positioning of the wheel hub blank 4 is completed.
As a preferred embodiment, the tensioning device may be one of an electric push rod, a pneumatic push rod or a hydraulic push rod, or a positioning chuck for hub processing, or a combination thereof, and the tensioning device is respectively arranged corresponding to the tensioning plate 22 and the tensioning block 33, and is independently controlled to sequentially complete radial positioning action and axial compression action of the hub blank 4, so that when a single set of tensioning device is configured, different strokes of the radial positioning action and the axial compression action are avoided, and the positioning effect is influenced.
More preferably, the tensioning device is of a double-shaft oil cylinder structure, the tensioning plate 22 and the tensioning block 33 are respectively connected through two pull rods of the double-oil cylinder structure, wherein a large oil cylinder pull rod in the double-oil cylinder structure is connected with a connecting hole position 221 of the tensioning plate 22, and a small oil cylinder pull rod and the large oil cylinder are coaxially arranged and penetrate through a threaded hole 331 of the large oil cylinder connecting tensioning block 33, so that independent control of axial positioning and radial positioning actions is realized. In the embodiment, the whole structure of the chuck is simplified by the application of the double-oil-cylinder structure, the structural layout is optimized, and the inspection and maintenance operation of the device is facilitated.
As shown in fig. 3, in order to further improve the radial positioning accuracy, the radial positioning block 32 includes a positioning base 321 connected with the sliding arm 31, and a plurality of positioning protrusions 322 corresponding to the outer edge of the hub blank 4 are fixedly connected to the positioning base 321, where the positioning protrusions 322 are circumferentially arranged along the outer edge of the hub blank 4. When the positioning device is used, the positioning protrusions 322 are abutted against the outer edge of the hub, so that the contact area between the radial positioning blocks 32 and the hub blank 4 in the circumferential direction is increased, and the radial positioning accuracy of the hub blank 4 is improved.
Further, the positioning base 321 is slidably connected with the sliding arm 31 along the radial direction, so that the radial positioning block 32 has a certain self-adapting capability, and when the hub blank 4 has a burr defect with a certain size or a certain irregular casting defect exists on the outer edge of the hub, the radial positioning block 32 will overcome the problem of poor radial positioning caused by the casting defect such as the burr to a certain extent through radial displacement relative to the sliding arm 31 during the positioning process. Specifically, a sliding groove 323 is formed in the sliding arm 31, the positioning base 321 is provided with a sliding rail 324 corresponding to the sliding groove 323, the positioning base 321 and the sliding arm 31 are movably connected through sliding fit of the sliding groove 323 and the sliding rail 324, a compression spring 325 is arranged in the sliding groove 323 corresponding to the positioning base 321, so that the radial positioning block 32 is elastically connected with the sliding arm 31, and a pre-tightening force of the positioning base 321 towards the center of the disc body 1 is provided. When the embodiment makes the chuck handle casting defects such as burrs which can not be avoided, a certain self-adaptive adjusting space is provided, pure rigid connection between structures is avoided, applicability of the chuck is expanded, service life of the chuck is prolonged, and maintenance cost of the clamp is reduced.
In a preferred embodiment, the radial positioning block 32 and the sliding arm 31 are slidably connected by a T-shaped groove and a T-shaped sliding rail 324, or a dovetail groove sliding fit structure may be adopted to ensure the fit accuracy.
Preferably, the radial positioning mechanism 3 is arranged with three sets of radial equidistant arrays along the disc body 1, and each positioning base 321 is respectively provided with two positioning protrusions 322.
When the utility model is used, the hub blank is fixedly connected with the main shaft of the machine tool through the connecting seat 5, the hub blank is placed on the disc body, the tensioning block 33 is pulled through the tensioning device to radially position the hub blank, and the tensioning plate 22 is tensioned to axially position the hub blank, so that the positioning clamping of the hub blank is completed.
The foregoing disclosure is merely illustrative of specific embodiments of this patent and this patent is not to be construed as limiting, since modifications will be apparent to those skilled in the art without departing from the principles of the utility model.
Claims (8)
1. A positioning chuck for hub machining, comprising a disc body (1), characterized in that: an axial positioning mechanism (2) and a radial positioning mechanism (3) which are arranged corresponding to the hub blank (4) are arranged on the disc body (1);
the axial positioning mechanism (2) comprises a crank pressing claw (21) for pressing a hub blank (4), the lower end of the crank pressing claw (21) is hinged with a tensioning plate (22), the tensioning plate (22) is axially and slidably connected with the disc body (1), a long hole is formed in the crank pressing claw (21), a pin shaft (23) is fixedly arranged on the disc body (1) corresponding to the long hole, the pin shaft (23) penetrates through the long hole of the crank pressing claw (21) and is in sliding fit with the long hole, and a connecting hole site (221) for connecting a tensioning device is reserved on the tensioning plate (22);
radial positioning mechanism (3) include with disk body (1) radial sliding fit's arm (31), the one end of arm (31) corresponds the wheel hub outer fringe and is provided with radial locating piece (32), and the through-hole of vertical direction has been seted up to the other end of arm (31), correspond on tensioning piece (33) with disk body (1) axial sliding fit's through-hole sets up inclined iron (34), offer on tensioning piece (33) threaded hole (331) that are used for connecting straining device.
2. A positioning chuck for use with a hub machining as in claim 1, wherein: the lower end of the tray body (1) is extended with a guide post (24), the tensioning plate (22) is provided with a guide hole corresponding to the guide post (24), and the guide post (24) is in sliding fit with the guide hole.
3. A positioning chuck for use with a hub machining as in claim 1, wherein: the tensioning device adopts a positioning chuck for hub processing or a combination thereof, wherein the positioning chuck is one of an electric push rod, a pneumatic push rod and a hydraulic push rod, and the tensioning device is respectively arranged corresponding to the tensioning plate (22) and the tensioning block (33).
4. A positioning chuck for use with a hub machining as in claim 1, wherein: the tensioning device is of a double-shaft oil cylinder structure, two pull rods in the double-oil cylinder structure are respectively connected with the tensioning plate (22) and the tensioning block (33), a large oil cylinder pull rod in the double-oil cylinder structure is connected with a connecting hole site (221) of the tensioning plate (22), and a small oil cylinder railing and the large oil cylinder are coaxially arranged and penetrate through a threaded hole (331) of the large oil cylinder to be connected with the tensioning block (33).
5. A positioning chuck for use with a hub machining as in claim 1, wherein: the radial positioning block (32) comprises a positioning base (321) connected with the sliding arm (31), a plurality of positioning protrusions (322) corresponding to the outer edge of the hub blank (4) are fixedly connected to the positioning base (321), and the positioning protrusions (322) are circumferentially distributed along the outer edge of the hub blank (4).
6. A positioning chuck for use with a hub machining as in claim 5, wherein: the positioning base (321) is connected with the sliding arm (31) in a sliding way along the radial direction, a sliding groove (323) is formed in the sliding arm (31), a sliding rail (324) is arranged on the positioning base (321) corresponding to the sliding groove (323), and a pressure spring (325) is arranged in the sliding groove (323) corresponding to the positioning base (321) and used for providing a pretightening force of the positioning base (321) towards the center of the disc body (1).
7. A positioning chuck for use with a hub machining as in claim 6, wherein: the radial positioning blocks (32) are slidably connected with the sliding arms (31) in a T-shaped groove and T-shaped sliding rail matching mode or a dovetail groove matching mode.
8. A positioning chuck for use with a hub machining as in claim 5, wherein: three sets of radial positioning mechanisms (3) are distributed along the radial equidistant array of the disc body (1), and each positioning base (321) is provided with two positioning protrusions (322) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321712369.6U CN219881906U (en) | 2023-07-03 | 2023-07-03 | Positioning chuck for hub machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321712369.6U CN219881906U (en) | 2023-07-03 | 2023-07-03 | Positioning chuck for hub machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219881906U true CN219881906U (en) | 2023-10-24 |
Family
ID=88402838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321712369.6U Active CN219881906U (en) | 2023-07-03 | 2023-07-03 | Positioning chuck for hub machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219881906U (en) |
-
2023
- 2023-07-03 CN CN202321712369.6U patent/CN219881906U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |