CN110814374A - High-precision hub machining device - Google Patents
High-precision hub machining device Download PDFInfo
- Publication number
- CN110814374A CN110814374A CN201910995146.7A CN201910995146A CN110814374A CN 110814374 A CN110814374 A CN 110814374A CN 201910995146 A CN201910995146 A CN 201910995146A CN 110814374 A CN110814374 A CN 110814374A
- Authority
- CN
- China
- Prior art keywords
- hub
- clamping
- precision
- wheel hub
- machining device
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/02—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning hubs or brake drums
Abstract
The invention discloses a high-precision hub machining device, which solves the problem of low machining precision caused by repeated clamping of a hub, and the technical scheme for solving the problem mainly comprises a base, a motor and a spindle arranged on the base, wherein the motor drives the spindle to rotate, one end of the spindle, which is far away from the motor, is provided with a centering device for driving the hub to synchronously rotate, the centering device is matched with a center hole of the hub, a plurality of clamping sheets for clamping the peripheral side surface of the hub are fixed on the base, the clamping sheets are distributed on the outer side of the hub along the circumferential direction of the hub, and a turning channel for turning a cutter is arranged between at least two clamping sheets adjacent to each other in the circumferential direction of the hub. According to the invention, the clamping sheet is fixed on the base, the cutter can pass through the turning channel at the position of the clamping sheet for turning, the turning of the hub can be completed only by one-time clamping, and the processing precision of the hub is improved.
Description
Technical Field
The invention relates to the technical field of machine manufacturing, in particular to a high-precision hub machining device.
Background
The automobile hub is a cylindrical metal piece for supporting a tire, and the main processing mode is to fix a semi-finished product of the hub on a chuck clamp and then carry out turning on the outer side surface and the inner side surface of the hub. The chuck of the universal lathe is connected with the main shaft and rotates along with the main shaft, and the main shaft needs to bear the weight of a hub semi-finished product and the whole chuck, so that the load and the inertia moment of the main shaft are large, the power of a motor is increased, the main shaft is easy to bend, and the service life of the main shaft is influenced; meanwhile, the chuck clamps the hub, the exposed end needs to be machined firstly, then the hub is turned to machine the other end, the whole machining process needs to be assembled and disassembled twice, namely, the hub machining lathe needs to carry out twice tool setting, and the machining precision and the machining efficiency of the hub are reduced.
Disclosure of Invention
The invention aims to provide a high-precision hub machining device, which reduces the load and the inertia moment on a main shaft, can complete the turning of a hub only by once clamping, and improves the machining precision of the hub.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a high accuracy wheel hub processingequipment, includes frame, motor and installs the main shaft on the frame, and motor drive main shaft is rotatory, the one end of keeping away from the motor on the main shaft is equipped with the centering device who drives the synchronous pivoted of wheel hub, and centering device cooperates with wheel hub's centre bore, is fixed with the centre gripping piece that is used for pressing from both sides tight wheel hub periphery side on the frame, and the centre gripping piece is equipped with a plurality ofly and distributes in wheel hub's the outside along wheel hub's circumference, and at least two are equipped with the turning passageway that supplies the cutter turning between the adjacent centre gripping piece in wheel.
Further, be equipped with the bulge that is used for reducing clamping piece and wheel hub area of contact on the clamping piece, the clamping piece is contradicted in wheel hub's periphery side through the bulge, and the contact surface with rotation wheel hub on the bulge is smooth curved surface.
Further, the clamping pieces are provided with balls which are in rolling contact with the peripheral side face of the hub, and the protruding portions are formed by the balls.
Furthermore, one end, close to the hub, of each clamping piece is provided with a mounting hole used for mounting a ball, the ball is in running fit with the mounting hole and protrudes out of the mounting hole, and the diameter of the mounting hole is smaller than that of the ball.
Further, the bulge comprises a semicircular bulge in sliding contact with the peripheral side face of the hub, and the semicircular bulge and the clamping piece are integrally formed.
Furthermore, one end of the clamping piece, which is close to the hub, is provided with an arc-shaped revolution surface matched with the peripheral side surface of the hub, and the arc-shaped revolution surface is provided with a plurality of bulges which are distributed along the circumferential direction of the hub.
Furthermore, the clamping sheets abut against the root of the rim of the hub.
Furthermore, the clamping sheets incline α to the main shaft from outside to inside along the radial direction to be less than or equal to 60 degrees.
Furthermore, the centering device is a tensioning device, and the tensioning device is in interference fit with the central hole of the hub.
Furthermore, the centering device is a fastening device, the fastening device is provided with a limiting surface, a matching surface is arranged on the hole wall of the center hole of the wheel hub, and the fastening device drives the wheel hub to rotate in the circumferential direction through the interference of the limiting surface and the matching surface. After the technical scheme is adopted, the invention has the following advantages:
on the one hand, the centering device is matched with the center hole of the hub, the hub is driven to rotate along with the main shaft, rotary machining of the inner surface and the outer surface of the hub is achieved, centering of hub installation is facilitated, deflection of the main shaft relative to the hub during machining is prevented, and coaxiality of the hub and the main shaft is guaranteed. On the other hand, the clamping sheet is fixed on the base, namely the weight of the clamping sheet is not born by the main shaft any more, but is transferred to the base with stronger bearing capacity, so that the load and the inertia moment on the main shaft are reduced, the energy consumption for driving the main shaft to rotate is reduced, the influence on the processing precision of the hub caused by the stress, bending and deformation of the main shaft is avoided, and the service life of the main shaft is also ensured; simultaneously, the clamping piece is fixed in the wheel hub course of working, and the clamping piece no longer receives the effect of centrifugal force, and the clamping piece is higher to wheel hub's centre gripping stability and reliability, also avoids leaving obvious centre gripping vestige at wheel hub's periphery side. In addition, the clamping piece is fixed in the axial direction and the circumferential direction, so that the turning channel is fixed in the circumferential direction of the hub, when the cutter moves axially to the turning channel, the cutter and the clamping piece are located at different positions in the circumferential direction of the hub, namely the cutter is staggered with the clamping piece, the cutter does not interfere with the clamping piece, the cutter directly cuts the peripheral side face of the hub exposed from the turning channel, so that the turning of the hub can be completed only by one-time clamping, the machining error caused by multiple times of loading and unloading is avoided, the auxiliary time for machining the hub is shortened, and the machining precision of the hub is improved.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a partial sectional view of a high-precision hub machining device according to a first embodiment of the present invention;
FIG. 2 is a partial top view of the high precision hub machining apparatus according to the first embodiment;
fig. 3 is a structural view of a clamping piece in the second high-precision hub machining device according to the present embodiment.
Detailed Description
Example one
As shown in fig. 1 and fig. 2, this embodiment provides a high accuracy wheel hub processingequipment, including frame, motor and install main shaft 1 on the frame, motor drive main shaft 1 is rotatory, the one end of keeping away from the motor on main shaft 1 is equipped with the centering device 2 that drives the synchronous pivoted of wheel hub 3, centering device 2 and wheel hub 3's centre bore cooperation, is fixed with the holding piece 4 that is used for pressing from both sides tight wheel hub 3 on the frame, and holding piece 4 is equipped with a plurality ofly and distributes in wheel hub 3's outside along wheel hub 3's circumference, and holding piece 4 contradicts wheel hub 3's periphery side.
On the one hand, centring means 2 and the centre bore cooperation of wheel hub 3 not only drive wheel hub 3 and rotate along with main shaft 1, realize the rotary machining of the inside and outside of wheel hub 3, do benefit to the central point of wheel hub 3 installation moreover, prevent that wheel hub 3 from taking place to deflect with main shaft 1 during processing, guarantee wheel hub 3 and main shaft 1's axiality. On the other hand, the clamping sheet 4 is fixed on the base, namely the weight of the clamping sheet 4 is not borne by the main shaft 1 any more, but transferred to the base with stronger bearing capacity, so that the load and the inertia moment on the main shaft 1 are reduced, the energy consumption for driving the main shaft 1 to rotate is reduced, the influence on the processing precision of the hub 3 caused by the forced bending deformation of the main shaft 1 is avoided, and the service life of the main shaft 1 is also ensured; simultaneously, the clamping piece 4 is fixed motionless in the 3 course of working of wheel hub, and clamping piece 4 no longer receives the effect of centrifugal force, and clamping piece 4 is higher to wheel hub 3's clamping stability and reliability, also avoids leaving obvious centre gripping vestige at wheel hub 4's periphery side.
In order to facilitate the cutter to process the outer surface of the whole hub 3, at least two adjacent clamping pieces 4 in the plurality of clamping pieces 4 are separated from each other in the circumferential direction of the hub 3. In particular, between at least two clamping segments 4 adjacent in the circumferential direction of the hub 3, a turning channel 5 for turning of the tool is provided. The fixed unchangeable in axial and ascending position of circumference of holding piece 4, thereby turning passageway 5 is unchangeable in 3 ascending positions of circumference of wheel hub, when cutter axial displacement to turning passageway 5, cutter and holding piece 4 lie in different positions in 3 circumferences of wheel hub, the cutter staggers with holding piece 4 promptly, the cutter no longer takes place to interfere with holding piece 4, the 3 periphery sides of wheel hub that the cutter direct cutting exposes in from turning passageway 5, thereby wheel hub 3's lathe work only needs a clamping to accomplish, avoid many times loading and unloading to cause the machining error, the auxiliary time of wheel hub 3 processing has been shortened, wheel hub 3's machining precision has been improved.
Be equipped with the bulge that is used for reducing clamping piece 4 and 3 area of contact of wheel hub on the clamping piece 4, clamping piece 4 contradicts in wheel hub 3's periphery side through the bulge, has reduced whole clamping piece 4 and wheel hub 3's area of contact, and wheel hub 3 rotates the frictional resistance who receives and diminishes. The contact surface with pivoted wheel hub 3 on the bulge is smooth curved surface to the bulge is close line contact with pivoted wheel hub 3, has further reduced the frictional resistance of holding piece 4 to wheel hub 3, has also reduced the wearing and tearing of bulge self.
In this embodiment, the holding piece 4 is provided with a ball 41 in rolling contact with the outer peripheral side surface of the hub 3, and the projecting portion is formed by the ball 41. The friction resistance of the rolling contact between the balls 41 and the peripheral side surface of the hub 3 is small, the projections are prevented from being broken due to extrusion of the uneven peripheral side surface of the hub 3, and the service life of the clamping pieces 4 is ensured; the hub 3 rotating at high speed is prevented from being severely rubbed with the convex part to cause surface tearing and gluing, and the damage of the clamping sheets 4 to the peripheral side surface of the hub 3 is reduced. It can be understood that, one end of the clamping piece 4 close to the hub 3 is provided with a mounting hole for mounting the ball 41, the ball 41 is rotatably matched with the mounting hole and protrudes out of the mounting hole, and the diameter of the mounting hole is smaller than that of the ball 41, so that the ball 41 is prevented from being separated from the clamping piece 4.
For making things convenient for the centre gripping piece 4 to stabilize and press from both sides tight wheel hub 3, the one end that is close to wheel hub 3 on the centre gripping piece 4 can be equipped with wheel hub 3's periphery side complex arc surface of revolution 40, be equipped with a plurality of along 3 circumference distributions of wheel hub the bulge on the arc surface of revolution 40. Arc surface of revolution 40 is located to the bulge, has not only increased the centre gripping length of clamping piece 4 in wheel hub 3 upwards week, and clamping piece 4 is high to wheel hub 3's clamping stability, and clamping piece 4 is shared by each bulge to wheel hub 3's clamp force moreover, avoids single bulge too big to wheel hub 3's packing force and causes the bulge wearing and tearing too fast, has guaranteed the life of clamping piece 4.
To prevent the rotating hub 3 from moving axially away from the spindle 1, the retaining tabs 4 in this embodiment abut against the root of the hub rim 31. Specifically, the projecting portion is located inside the hub rim 31 in the axial direction of the hub 3, and the projecting portion abuts against the root of the hub rim 31. The bulge has restricted wheel hub 3 and has removed to the direction of keeping away from main shaft 1, guarantees centring means 2 and the cooperation of 3 centre holes of wheel hub, and simultaneously, the root intensity of wheel hub rim 31 is big, and the centre gripping piece 4 is little to the clamp mark that 3 surperficial centre gripping of wheel hub produced, and the small clamp mark that its exists also is located the more concealed wheel hub rim 31 root in position, and the off-the-shelf pleasing to the eye degree of wheel hub 3 is high, has guaranteed the machining precision and the finish on 3 surfaces of wheel hub.
In the embodiment, the clamping sheets 4 are inclined α from the outside to the inside in the radial direction towards the main shaft 1, so that the contact between the protruding part and the root part of the hub rim 31 can be ensured, and the interference between the side surfaces of the clamping sheets 4 and the hub rim 31 can be avoided.
The centering device 2 is a tensioning device, the tensioning device is in interference fit with a center hole of the hub 3, the hub 3 is driven to rotate, the hub 3 is prevented from moving axially under the action of a cutter, and the axial positioning of the hub 3 is guaranteed. Of course, according to the shape difference of the central hole of the hub 3, the centering device 2 can also be a fastening device, the fastening device is provided with a limiting surface, the hole wall of the central hole of the hub 3 is provided with a matching surface, and the fastening device drives the hub 3 to rotate circumferentially through the interference of the limiting surface and the matching surface. For example, the fastening device comprises a polygonal prism, the side faces of the polygonal prism form limiting faces, the central hole of the hub 3 is a polygonal hole matched with the polygonal prism, and the hole wall of the polygonal hole forms a matching face.
In this embodiment, for the surface cutting that prevents wheel hub 3 changes and influence the centre gripping of clamping piece 4, can also be equipped with between clamping piece 4 and the frame and provide the hydraulic system or the oil pressure system of cutting compensation for clamping piece 4, guarantee that clamping piece 4 presss from both sides tight wheel hub 3's periphery side all the time, realize the flexible centre gripping of clamping piece 4 to wheel hub 3.
Example two
In the present embodiment, as shown in fig. 3, the clamping piece 4 may be in sliding contact instead of rolling contact with the hub 3. Specifically, the projection includes a semicircular projection 42 in sliding contact with the outer peripheral side surface of the hub 3, and the semicircular projection 42 is integrally formed with the gripping piece 4. Meanwhile, the semicircular bulge 42 has high reliability and stability, and the clamping piece 4 has a simple structure and is convenient to process.
Other contents not described in this embodiment may refer to the first embodiment described above.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (10)
1. The utility model provides a high accuracy wheel hub processingequipment, includes frame, motor and installs the main shaft on the frame, and motor drive main shaft is rotatory, its characterized in that, the one end of keeping away from the motor on the main shaft is equipped with the centering device who drives the synchronous pivoted of wheel hub, and centering device and wheel hub's centre bore cooperation are fixed with the centre gripping piece that is used for pressing from both sides tight wheel hub periphery side on the frame, and the centre gripping piece is equipped with a plurality ofly and distributes in wheel hub's the outside along wheel hub's circumference, and at least two are equipped with the turning passageway that supplies the cutter turning between the adjacent centre gripping piece in wheel.
2. The high-precision hub machining device according to claim 1, wherein the clamping pieces are provided with protrusions for reducing contact areas between the clamping pieces and the hub, the clamping pieces abut against the peripheral side face of the hub through the protrusions, and contact faces of the protrusions and the rotating hub are smooth curved faces.
3. A high-precision hub machining device according to claim 2, wherein the clamping pieces are provided with balls that are in rolling contact with the outer peripheral side surface of the hub, and the projecting portions are formed by the balls.
4. A high-precision hub machining device as claimed in claim 3, wherein the end of the clamping piece close to the hub is provided with a mounting hole for mounting a ball, the ball is rotatably matched with the mounting hole and protrudes out of the mounting hole, and the diameter of the mounting hole is smaller than that of the ball.
5. A high-precision hub machining device according to claim 2, wherein the projecting portion includes a semicircular projection that is in sliding contact with the outer peripheral side surface of the hub, and the semicircular projection is integrally formed with the clamping piece.
6. A high-precision hub machining device according to any one of claims 2 to 5, wherein an end of the clamping piece, which is close to the hub, is provided with an arc-shaped surface of revolution which is matched with the peripheral side surface of the hub, and the arc-shaped surface of revolution is provided with a plurality of the protrusions which are distributed along the circumferential direction of the hub.
7. A high-precision hub machining device according to any one of claims 1 to 5, wherein the clamping pieces abut against the root of the hub rim.
8. A high-precision hub machining device according to claim 7, wherein the clamping pieces are inclined α degrees or less to the main shaft from outside to inside in the radial direction.
9. A high-precision hub machining device according to any one of claims 1 to 5, wherein the centering device is a tensioning device, and the tensioning device is in interference fit with a central hole of the hub.
10. A high-precision hub machining device according to any one of claims 1 to 5, wherein the centering device is a fastening device, the fastening device is provided with a limiting surface, the hole wall of the center hole of the hub is provided with a matching surface, and the fastening device drives the hub to rotate circumferentially by abutting against the matching surface through the limiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995146.7A CN110814374B (en) | 2019-10-18 | 2019-10-18 | High-precision hub machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995146.7A CN110814374B (en) | 2019-10-18 | 2019-10-18 | High-precision hub machining device |
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| Publication Number | Publication Date |
|---|---|
| CN110814374A true CN110814374A (en) | 2020-02-21 |
| CN110814374B CN110814374B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910995146.7A Active CN110814374B (en) | 2019-10-18 | 2019-10-18 | High-precision hub machining device |
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| CN (1) | CN110814374B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001032339A1 (en) * | 1999-11-01 | 2001-05-10 | Kosei Aluminum Co., Ltd. | Mirror surface finishing |
| WO2005068115A1 (en) * | 2004-01-16 | 2005-07-28 | Maus S.P.A | A device and method for clamping work pieces, in particular for clamping wheels during mechanical surface-finishing operations |
| CN201579636U (en) * | 2009-12-31 | 2010-09-15 | 沈阳锦德机械有限公司 | Vertical lathe suspending clamping jaw |
| CN102211209A (en) * | 2011-06-07 | 2011-10-12 | 柳州市龙晨车桥配件制造有限公司 | Hub lathe jig |
| CN205218594U (en) * | 2015-12-14 | 2016-05-11 | 烟台紫泰汽车配件制造有限公司 | Thin wall wheel hub anchor clamps |
| CN105880658A (en) * | 2016-06-12 | 2016-08-24 | 中信戴卡股份有限公司 | Large-stroke tension device for clamping central hole of hub |
| CN205614064U (en) * | 2016-05-16 | 2016-10-05 | 黄河科技学院 | A lathe that is used for turning stock class part |
| CN206083867U (en) * | 2016-09-29 | 2017-04-12 | 天津泽川工贸有限公司 | Novel be applicable to support of oval post lathe processing device |
| CN208099865U (en) * | 2018-05-02 | 2018-11-16 | 安徽省巢湖市宏顺机械铸造有限公司 | Clamping device used in a kind of processing hub workpiece |
-
2019
- 2019-10-18 CN CN201910995146.7A patent/CN110814374B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001032339A1 (en) * | 1999-11-01 | 2001-05-10 | Kosei Aluminum Co., Ltd. | Mirror surface finishing |
| WO2005068115A1 (en) * | 2004-01-16 | 2005-07-28 | Maus S.P.A | A device and method for clamping work pieces, in particular for clamping wheels during mechanical surface-finishing operations |
| CN201579636U (en) * | 2009-12-31 | 2010-09-15 | 沈阳锦德机械有限公司 | Vertical lathe suspending clamping jaw |
| CN102211209A (en) * | 2011-06-07 | 2011-10-12 | 柳州市龙晨车桥配件制造有限公司 | Hub lathe jig |
| CN205218594U (en) * | 2015-12-14 | 2016-05-11 | 烟台紫泰汽车配件制造有限公司 | Thin wall wheel hub anchor clamps |
| CN205614064U (en) * | 2016-05-16 | 2016-10-05 | 黄河科技学院 | A lathe that is used for turning stock class part |
| CN105880658A (en) * | 2016-06-12 | 2016-08-24 | 中信戴卡股份有限公司 | Large-stroke tension device for clamping central hole of hub |
| CN206083867U (en) * | 2016-09-29 | 2017-04-12 | 天津泽川工贸有限公司 | Novel be applicable to support of oval post lathe processing device |
| CN208099865U (en) * | 2018-05-02 | 2018-11-16 | 安徽省巢湖市宏顺机械铸造有限公司 | Clamping device used in a kind of processing hub workpiece |
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| Publication number | Publication date |
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| CN110814374B (en) | 2021-11-16 |
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