CN110842218A - Hub hole machining method - Google Patents
Hub hole machining method Download PDFInfo
- Publication number
- CN110842218A CN110842218A CN201911154790.8A CN201911154790A CN110842218A CN 110842218 A CN110842218 A CN 110842218A CN 201911154790 A CN201911154790 A CN 201911154790A CN 110842218 A CN110842218 A CN 110842218A
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- Prior art keywords
- wheel
- hub
- hub hole
- machining
- face
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- 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
- B23B31/103—Retention by pivotal elements, e.g. catches, pawls
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a hub hole machining method, and belongs to the technical field of wagon wheel machining. The hub hole machining method comprises the following steps: placing the wheel on a self-centering chuck of a machining apparatus; the self-centering chuck supports the hub end face of the wheel, and the hub end face of the wheel is used as a positioning reference; the self-centering chuck clamps the wheel; the processing equipment is contacted with the upper end surface of the hub hole of the wheel to obtain a Z-direction coordinate value; and the processing equipment processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole. The wheel hub hole machining method effectively improves machining efficiency, reduces unnecessary operation, reduces labor intensity, saves manufacturing cost, and is simple and practical.
Description
Technical Field
The invention relates to the technical field of wheel machining, in particular to a machining method for a wheel hub hole of a railway wagon.
Background
Referring to fig. 1, the railway wagon wheel consists of a rim 1, a spoke 2 and a hub 3. The hub outer end surface is called a hub end surface 4, the rim outer end surface is called a rim end surface 5, and the rim outer circle part is called a tread surface 6. When the wheel is provided for truck manufacturers, the inner hole part is a blank, and then the wheel is assembled with an axle after the inner hole and the upper and lower chamfers R of the hub 3 are finished by each truck manufacturer.
However, in the prior art, the inner hole and the upper and lower chamfers R of the hub 3 are finished, and the distance between the end surface of the hub 3 and the end surface of the rim 1 is uncertain (the maximum tolerance is 11 mm), so that the processing precision of the upper and lower chamfers R of the hub is ensured reliably.
Before the inner hole of the hub 3 is machined, the specific positions of the upper end face and the lower end face of the hub hole relative to the rim need to be known, so that the machining efficiency is low, the number of auxiliary operations is large, the labor intensity is high, and the manufacturing cost is high.
Disclosure of Invention
The invention provides a hub hole processing method, which solves or partially solves the technical problems of low processing efficiency, more auxiliary operations, high labor intensity and high manufacturing cost caused by the fact that the specific positions of the upper end face and the lower end face of a hub hole relative to a rim are required to be known before the inner hole of a hub 3 is processed in the prior art.
In order to solve the technical problem, the invention provides a hub hole machining method which comprises the following steps: placing the wheel on a self-centering chuck of a machining apparatus; the self-centering chuck supports the hub end face of the wheel, and the hub end face of the wheel is used as a positioning reference; the self-centering chuck clamps the wheel; the processing equipment is contacted with the upper end surface of the hub hole of the wheel to obtain a Z-direction coordinate value; and the processing equipment processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
Further, when the hub hole is machined, the machining equipment conducts chamfering machining on the hub hole according to the Z-direction coordinate value and the chamfering size of the hub hole.
Further, the self-centering chuck comprises: the device comprises a disc body, a driving mechanism, a supporting plate and a plurality of clamping jaws; a plurality of sliding grooves are formed in the tray body; the clamping jaws are in one-to-one correspondence with the sliding grooves and can be arranged in the corresponding sliding grooves in a sliding manner; the fixed end of the driving mechanism is fixedly arranged on the disc body, and the telescopic end of the driving mechanism is fixedly connected with the clamping jaw; the supporting plate is detachably arranged on the tray body.
Further, the support plate supports a hub end surface of the wheel.
Further, the shape of the support plate matches the shape of the hub end face.
Further, the size of the supporting plate is matched with the size of the end face of the hub.
Furthermore, a plurality of claws tightly clamp the tread of the wheel.
Further, when the processing equipment is a numerical control vertical lathe; the wheel is placed on a self-centering chuck of the numerical control vertical lathe, the self-centering chuck supports the hub end face of the wheel, and the hub end face of the wheel is used as a positioning reference; the self-centering chuck clamps the wheel; under the manual mode of the numerical control vertical lathe, enabling a cutter of the numerical control vertical lathe to contact the upper end face of a hub hole of the wheel, acquiring a Z-direction coordinate value, and inputting the Z-direction coordinate value into a machining parameter of the numerical control vertical lathe; and under the automatic state of the numerical control vertical lathe, the numerical control vertical lathe processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
Further, when the processing equipment is a wheel vertical boring machine; placing the wheel on a self-centering chuck of the wheel vertical boring machine; taking the end face of the hub of the wheel as a positioning reference; the self-centering chuck supports the end face of the hub of the wheel and clamps the wheel; contacting an upper measuring head of the wheel vertical boring machine with the upper end surface of a hub hole of the wheel to obtain a Z-direction coordinate value, and inputting the Z-direction coordinate value into a processing parameter of the wheel vertical boring machine; and the wheel hub hole is processed by the wheel vertical boring machine according to the Z-direction coordinate value and the processing size of the wheel hub hole.
Further, when the processing equipment is a wheel stand; placing the wheel on a self-centering chuck of the wheel vertical lathe, wherein the self-centering chuck supports the hub end surface of the wheel, and the hub end surface of the wheel is used as a positioning reference; the self-centering chuck clamps the wheel; the laser measurer of the wheel vertical lathe starts to scan the length of the hub hole, and when the laser scans the upper end surface of the hub hole, the Z-direction coordinate value is obtained and input into the wheel vertical lathe machining parameter; and the wheel vertical lathe processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the wheel is placed on a self-centering chuck of machining equipment, the self-centering chuck supports the hub end face of the wheel, the hub end face of the wheel serves as a positioning reference, the wheel is clamped by the self-centering chuck, the machining equipment is in contact with the upper end face of a hub hole of the wheel, a Z-direction coordinate value is acquired, and the machining equipment machines the hub hole according to the Z-direction coordinate value and the machining size of the hub hole.
Drawings
FIG. 1 is a schematic structural view of a railway wagon wheel provided in an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for machining a hub bore according to an embodiment of the present invention;
FIG. 3 is a schematic wheel support diagram illustrating a method of hub hole machining according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a self-centering chuck for a hub hole machining method according to an embodiment of the present invention.
Detailed Description
Referring to fig. 2, a hub hole machining method provided in an embodiment of the present invention includes the following steps:
the wheel is placed on a self-centering chuck 7 of the machining apparatus.
The self-centering chuck 7 supports the hub end face of the wheel.
The hub end face 4 of the wheel is used as a positioning reference.
The self-centering chuck 7 clamps the wheel.
And the processing equipment is contacted with the upper end surface of the hub hole of the wheel to obtain a Z-direction coordinate value.
And machining the hub hole by the machining equipment according to the Z-direction coordinate value and the machining size of the hub hole.
This application embodiment is owing to place the wheel on from centering chuck 7, from centering chuck 7 support the wheel hub terminal surface of wheel, use wheel hub terminal surface 4 of wheel as the location benchmark, from centering chuck 7 with the wheel chucking, the wheel hub hole up end of processing equipment contact wheel, acquire Z to the coordinate value, processing equipment processes the wheel hub hole according to Z to the coordinate value and the machining dimension in wheel hub hole, so, use the wheel hub terminal surface as the location benchmark, no matter what lathe processing was adopted, relative processing equipment's cutter, the wheel hub terminal surface is a fixed value, machining efficiency can effectively be improved, reduce unnecessary operation, reduce intensity of labour, practice thrift manufacturing cost, and is simple and practical.
Specifically, when the hub hole is machined, the machining equipment performs chamfering machining on the hub hole according to the Z-direction coordinate value and the chamfering size of the hub hole, the size of the lower chamfer can be reliably guaranteed, and the machining precision can be controlled within 0.2 mm.
Referring to fig. 3-4, the self-centering chuck 7 comprises: a disk body 7-1, a driving mechanism, a supporting plate 7-3 and a plurality of claws 7-4.
The tray body 7-1 is provided with a plurality of sliding grooves 7-2. Wherein, a plurality of chutes 7-2 are arranged on the disc body 7-1 at equal angle and uniform intervals, so as to ensure that the claws 7-4 can clamp the wheel.
The plurality of claws 7-4 correspond to the plurality of chutes 7-2 one by one, and the claws 7-4 are slidably arranged in the corresponding chutes 7-2.
The fixed end of the driving mechanism is fixedly arranged on the disc body 7-1. In the embodiment, the fixed end of the driving mechanism can be fixedly arranged on the tray body 7-1 through a bolt, so that the fixing mechanism is convenient to disassemble. The telescopic end of the driving mechanism is fixedly connected with the claw 7-4. In the embodiment, the telescopic end of the driving mechanism can be fixedly connected with the jaw 7-4 through a bolt, so that the driving mechanism is convenient to disassemble. Wherein, the driving mechanism can be a hydraulic cylinder.
The supporting plate 7-3 is detachably arranged on the tray body 7-1. In the present embodiment, the support plate 7-3 may be detachably provided on the tray body 7-1 by bolts.
The clamping claws 7-4 clamp the tread 6 of the wheel, so that the wheel is clamped, and the wheel is prevented from shaking during machining.
The support plate 7-3 supports the hub end face 4 of the wheel. The shape of the support plate 7-3 is matched with that of the hub end face 4, and the size of the support plate 7-3 is matched with that of the hub end face 4, so that the stability of supporting the hub end face 4 is guaranteed.
When the end face 4 of the wheel hub is taken as a positioning reference, the clamping is not unstable due to the reduction of the positioning area, and the run-out of the end face of the processed wheel cake is not over-poor (the run-out is not more than 0.5 mm and is qualified).
Referring to table 1, the end face runout of the wheel cakes of different manufacturers are randomly selected and measured in the manner of positioning the rim end face 5 and the hub end face 4 respectively.
End face run-out data table unit under different positioning modes: mm is
TABLE 1
Referring to table 2, the data of the end face runout of the wheel cake is measured by clamping and loosening the clamping jaws under different positioning modes.
End face runout data sheet unit at clamping and unclamping: mm is
TABLE 2
As can be seen from tables 1 and 2, the end face runout of the processed wheel disc can not be out of tolerance no matter the wheel disc is positioned in the end face of the wheel rim or in the end face of the wheel hub hole.
Specifically, when the processing equipment is a numerical control vertical lathe.
The wheel is placed on a self-centering chuck 7 of the numerical control vertical lathe, the self-centering chuck 7 supports the hub end surface 4 of the wheel, and the hub end surface 4 of the wheel is used as a positioning reference.
The self-centering chuck 7 clamps the wheel.
In a manual mode of the numerical control vertical lathe, a cutter of the numerical control vertical lathe is contacted with the upper end surface of a hub hole of a wheel, the acquired Z-direction coordinate value is input into the machining parameter of the numerical control vertical lathe.
And under the automatic state of the numerical control vertical lathe, the numerical control vertical lathe processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
For the numerical control vertical lathe, after the hub end face 4 is taken as a positioning reference, the coordinate value of the upper end face of the hub 3 can be acquired through tool setting. The length of the wheel hub hole does not need to be measured manually, the quality is guaranteed, meanwhile, the auxiliary operation time is reduced, the labor intensity is reduced, and the machining efficiency is improved.
In particular when the machining apparatus is a wheel boring machine.
The wheel is placed on a self-centering chuck 7 of a wheel vertical boring machine, the self-centering chuck 7 supports the hub end surface 4 of the wheel, and the hub end surface 4 of the wheel is used as a positioning reference.
The self-centering chuck 7 clamps the wheel.
And (3) enabling an upper measuring head of the vertical wheel boring machine to contact the upper end surface of a hub hole of the wheel, acquiring a Z-direction coordinate value, and inputting the Z-direction coordinate value into the machining parameters of the vertical wheel boring machine.
And the wheel hub hole is machined by the wheel vertical boring machine according to the Z-direction coordinate value and the machining size of the wheel hub hole.
For the wheel vertical boring machine, after the hub end face 4 is used as a positioning reference, a lower measuring head for measuring the length of a hub hole is not needed, so that the processing link is simplified, the efficiency is improved, and the cost for mounting the measuring head is saved.
In particular when the processing device is a wheel lift.
The wheel is placed on a self-centering chuck 7 of the wheel vertical lathe, the self-centering chuck 7 supports the hub end surface 4 of the wheel, and the hub end surface 4 of the wheel is used as a positioning reference.
The self-centering chuck 7 clamps the wheel.
And the laser measurer of the wheel vertical lathe starts to scan the length of the hub hole, and when the laser scans the upper end surface of the hub hole, the acquired Z-direction coordinate value is input into the machining parameters of the wheel vertical lathe.
And the wheel vertical lathe processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
For the wheel vertical lathe, after the hub end face 4 is used as a positioning reference, only a fixed value is input into a system after laser measurement is completed, so that the laser measurement error cannot cause influence, and the processing precision is ensured.
When the laser measurement device of the wheel vertical lathe starts to scan the length of the hub hole, the laser measurement device starts to scan the length of the hub hole from top to bottom, when the laser scans the upper end face of the hub hole, a first numerical value can be captured, the first numerical value is a Z-direction coordinate value, and the automatic input system takes the first numerical value as the upper end face of the hub hole. And then scanning in the hub hole all the time, and capturing a second numerical value when the lower end surface of the hub hole is scanned, wherein the fixed value of the hub end surface 4 serving as a positioning reference is used as the fixed value to replace the second numerical value in the program, and the fixed value is sent to the wheel vertical lathe system and serves as the lower end surface of the hub hole. I.e., the difference between the fixed value and the first value is the length of the wheel bore.
In order to more clearly describe the embodiment of the present invention, the following description is made on the using method of the embodiment of the present invention.
A wheel is hoisted to a disc body 7-1 by a lifting appliance, a hub end face 4 of the wheel is supported by a supporting plate 7-3, a driving mechanism is started, the telescopic end of the driving mechanism moves to drive the clamping jaws 7-4 to move in the sliding grooves 7-2, so that the clamping jaws 7-4 clamp the tread 6 of the wheel, the wheel is guaranteed to be clamped, and the wheel is prevented from shaking during machining.
The wheel hub end face 4 of the wheel is used as a positioning reference, the processing equipment is in contact with the upper end face of the wheel hub hole of the wheel to obtain the Z-direction coordinate value, and the processing equipment processes the wheel hub hole according to the Z-direction coordinate value and the processing size of the wheel hub hole.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A hub hole machining method is characterized by comprising the following steps:
placing the wheel on a self-centering chuck of a machining apparatus;
the self-centering chuck supports the hub end face of the wheel, and the hub end face of the wheel is used as a positioning reference;
the self-centering chuck clamps the wheel;
the processing equipment is contacted with the upper end surface of a hub hole of the wheel to obtain a Z-direction coordinate value;
and the processing equipment processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
2. The method of machining a hub hole according to claim 1, wherein:
and when the hub hole is machined, the machining equipment performs chamfering machining on the hub hole according to the Z-direction coordinate value and the chamfering size of the hub hole.
3. The method of machining a hub bore of claim 1, wherein the self-centering chuck comprises: the device comprises a disc body, a driving mechanism, a supporting plate and a plurality of clamping jaws;
a plurality of sliding grooves are formed in the tray body;
the clamping jaws are in one-to-one correspondence with the sliding grooves and can be arranged in the corresponding sliding grooves in a sliding manner;
the fixed end of the driving mechanism is fixedly arranged on the disc body, and the telescopic end of the driving mechanism is fixedly connected with the clamping jaw;
the supporting plate is detachably arranged on the tray body.
4. The method of machining a hub hole according to claim 3, wherein:
the support plate supports a hub end face of the wheel.
5. The method of machining a hub bore of claim 4, wherein:
the shape of the supporting plate is matched with that of the end face of the hub.
6. The method of machining a hub bore of claim 5, wherein:
the size of the supporting plate is matched with that of the end face of the hub.
7. The method of machining a hub hole according to claim 3, wherein:
and the clamping claws clamp the tread of the wheel.
8. The method of machining a hub hole according to claim 1, wherein:
when the processing equipment is a numerical control vertical lathe;
placing the wheel on a self-centering chuck of the numerical control vertical lathe;
taking the end face of the hub of the wheel as a positioning reference;
the self-centering chuck supports the end face of the hub of the wheel and clamps the wheel;
under the manual mode of the numerical control vertical lathe, enabling a cutter of the numerical control vertical lathe to contact the upper end face of a hub hole of the wheel, acquiring a Z-direction coordinate value, and inputting the Z-direction coordinate value into a machining parameter of the numerical control vertical lathe;
and under the automatic state of the numerical control vertical lathe, the numerical control vertical lathe processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
9. The method of machining a hub hole according to claim 1, wherein:
when the processing equipment is a wheel vertical boring machine;
placing the wheel on a self-centering chuck of the wheel vertical boring machine;
taking the end face of the hub of the wheel as a positioning reference;
the self-centering chuck supports the end face of the hub of the wheel and clamps the wheel;
contacting an upper measuring head of the wheel vertical boring machine with the upper end surface of a hub hole of the wheel to obtain a Z-direction coordinate value, and inputting the Z-direction coordinate value into a processing parameter of the wheel vertical boring machine;
and the wheel hub hole is processed by the wheel vertical boring machine according to the Z-direction coordinate value and the processing size of the wheel hub hole.
10. The method of machining a hub hole according to claim 1, wherein:
when the processing equipment is a wheel stand vehicle;
placing the wheel on a self-centering chuck of the wheel stand;
taking the end face of the hub of the wheel as a positioning reference;
the self-centering chuck supports the end face of the hub of the wheel and clamps the wheel;
the laser measurer of the wheel vertical lathe starts to scan the length of the hub hole, and when the laser scans the upper end surface of the hub hole, the Z-direction coordinate value is obtained and input into the wheel vertical lathe machining parameter;
and the wheel vertical lathe processes the hub hole according to the Z-direction coordinate value and the processing size of the hub hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911154790.8A CN110842218B (en) | 2019-11-22 | 2019-11-22 | Hub hole machining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911154790.8A CN110842218B (en) | 2019-11-22 | 2019-11-22 | Hub hole machining method |
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| Publication Number | Publication Date |
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| CN110842218A true CN110842218A (en) | 2020-02-28 |
| CN110842218B CN110842218B (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911154790.8A Active CN110842218B (en) | 2019-11-22 | 2019-11-22 | Hub hole machining method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05162004A (en) * | 1991-12-13 | 1993-06-29 | Nippon Light Metal Co Ltd | Cutting of disc wheel for automobile |
| CN201841269U (en) * | 2010-01-15 | 2011-05-25 | 辛振涛 | Dedicated railway vertical wheel lathe |
| CN204621593U (en) * | 2015-05-20 | 2015-09-09 | 浙江万丰摩轮有限公司 | A kind of self-regulated frock for wheel hub PCD hole machined |
| CN209465720U (en) * | 2018-11-28 | 2019-10-08 | 山东金麒麟股份有限公司 | Combination claw for brake disc vertical lathing processing |
-
2019
- 2019-11-22 CN CN201911154790.8A patent/CN110842218B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05162004A (en) * | 1991-12-13 | 1993-06-29 | Nippon Light Metal Co Ltd | Cutting of disc wheel for automobile |
| CN201841269U (en) * | 2010-01-15 | 2011-05-25 | 辛振涛 | Dedicated railway vertical wheel lathe |
| CN204621593U (en) * | 2015-05-20 | 2015-09-09 | 浙江万丰摩轮有限公司 | A kind of self-regulated frock for wheel hub PCD hole machined |
| CN209465720U (en) * | 2018-11-28 | 2019-10-08 | 山东金麒麟股份有限公司 | Combination claw for brake disc vertical lathing processing |
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| CN110842218B (en) | 2021-07-20 |
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Effective date of registration: 20210630 Address after: Song Jia Qiao Zhuzhou Hetang District of Hunan Province in 412003 Applicant after: CRRC Zhuzhou Vehicle Co.,Ltd. Address before: 430212 new bridge area, Jiangxia Economic Development Zone, Wuhan, Hubei Applicant before: CRRC Yangtze Co.,Ltd. |
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