CN106624656A - Machining process for high-precision forklift bearings - Google Patents
Machining process for high-precision forklift bearings Download PDFInfo
- Publication number
- CN106624656A CN106624656A CN201611242017.3A CN201611242017A CN106624656A CN 106624656 A CN106624656 A CN 106624656A CN 201611242017 A CN201611242017 A CN 201611242017A CN 106624656 A CN106624656 A CN 106624656A
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- CN
- China
- Prior art keywords
- plane
- raceway
- fork truck
- processing
- high accuracy
- Prior art date
- 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
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a machining process for high-precision forklift bearings. The machining process includes the following steps of forging, inner hole plane rough turning, outer circle plane rough turning, CNC numerical control machining, quenching, freezing treatment, tempering, surface finishing treatment, two-plane grinding, outer circle rough grinding, inner hole plane and outer circle plane machining achieved through a cube boron carbide turning tool, raceway rough grinding, raceway fine grinding, raceway supper finishing, outer arc rough grinding and outer arc fine grinding. The freezing treatment is achieved by conducting heat preservation for 35 min to 40 min at the temperature ranging from -87 DEG C to -82 DEG C. The temperature rise speed during tempering ranges from 5 DEG C/h to 7 DEG C/h. By means of the manner mentioned above and the machining process, the machining precision, hardness and the bearing capacity of products can be improved, the service life can be prolonged, and the safety performance of the products can be improved.
Description
Technical field
The present invention relates to field of bearings, more particularly to a kind of processing technology of high accuracy fork truck bearing.
Background technology
Fork truck bearing is different from general plain bearing, and it on bearing material, will be better than general in quality in performance
Bearing.Fork truck is widely used in harbour, station, airport, goods yard, factory floor, warehouse, Transfer center and home-delivery center etc., and
Handling, the transport operation that pallet cargo is carried out in cabin, compartment and container can be entered, is play in the logistics system of enterprise
Very important role, is palletized transport, the requisite equipment of Container Transport, is mechanized handling, stacking and short distance
The high-efficiency appliance of transport, is the main force in material conveyance equipment.Self-propelled fork truck comes across 1917.World War II
Period, fork truck is developed.China starts to manufacture fork truck from early 1950s.Quick in particular with China's economic sends out
Exhibition, the material handling of most of enterprise has had been detached from original a dead lift, the substitute is the machinery based on fork truck
Change and carry.Therefore, in the past few years, the demand in Chinese fork truck market is all increased every year with double-digit speed.
Almost every fork truck has a lowering or hoisting gear born compared with high dynamic and static load.It allows for withstanding
Strong collision, vibration and severe work condition environment in daily operation, such as hyperpyrexia, humidity, dust or Korrosionsmedium etc..
Therefore, the guiding mechanism of lowering or hoisting gear should be especially solid, and with remarkable holding capability.In order to ensure to lift weight
It is precisely mobile, it is necessary to make door frame and goods shelf in low friction and almost without clearance in the state of mutually moved.Existing fork truck
Bearing be all using external import bearing, the bearing of domestic production due in the defect for being difficult to overcome present on process technology,
It is extremely difficult to use requirement.
The content of the invention
The invention mainly solves the technical problem of：For the deficiencies in the prior art, there is provided a kind of high accuracy fork truck bearing
Processing technology, it is possible to increase the machining accuracy of product, hardness and bearing capacity, increase the service life, improve the safety of product
Performance.
To solve above-mentioned technical problem, one aspect of the present invention is：A kind of high accuracy fork truck bearing is provided
Processing technology, comprise the following steps：Forging-rough turn endoporus plane-rough turn outer disk-CNC digital control processings-quenching-freezing
Process-tempering-surface light decorations process-the plane of mill two-corase grind is cylindrical-cubic boron lathe tool processing endoporus plane and cylindrical flat
Face-corase grind raceway-fine grinding raceway-superfinishing raceway-corase grind external arc-fine cylindrical arc, the freezing processing is -82 DEG C ~ -87
DEG C insulation 35-40 minutes, the temperature rise speed during tempering be 5-7 DEG C/h.
In a preferred embodiment of the present invention, cubic boron lathe tool processing endoporus plane and outer disk plus
Work precision is less than or equal to 0.015mm.
In a preferred embodiment of the present invention, the table of endoporus plane and outer disk after the processing of cubic boron lathe tool
Surface roughness is less than or equal to 0.2 μm.
In a preferred embodiment of the present invention, the freezing processing is in insulation 40 minutes at -85 DEG C.
In a preferred embodiment of the present invention, the temperature rise speed during tempering is 6 DEG C/h.
The invention has the beneficial effects as follows：By processing endoporus plane and outer disk replacement mill using cubic boron lathe tool
Processing technology is cut, grinding process is reduced, the machining accuracy of product is improved；Optimize freezing processing and temper simultaneously, improve and produce
The hardness of product, makes product have high bearing capacity, increases the service life, and improves security performance.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that apparent clearly defining so as to make to protection scope of the present invention.
The embodiment of the present invention includes：
A kind of processing technology of high accuracy fork truck bearing, comprises the following steps：Forging-rough turn endoporus plane-rough turn outer disk-
CNC digital control processings-quenching-freezing processing-tempering-surface light decorations process-the plane of mill two-corase grind is cylindrical-cubic boron lathe tool
Processing endoporus plane and outer disk-corase grind raceway-fine grinding raceway-superfinishing raceway-corase grind external arc-fine cylindrical arc.
The freezing processing is in insulation 35-40 minutes, in insulation 40 at a temperature of preferably -85 DEG C at -82 DEG C ~ -87 DEG C
Minute, for the retained austenite in organizing after reduction quenching, improve the hardness of part.
The temperature rise speed during tempering is 5-7 DEG C/h, preferably 6 DEG C/h, for improving the toughness of part, is easy to follow-up
Processing, and improve the service life of part.
The machining accuracy of the cubic boron lathe tool processing endoporus plane and outer disk is less than or equal to 0.015mm.
The surface roughness of endoporus plane and outer disk after the processing of cubic boron lathe tool is less than or equal to 0.2 μm.
Present invention is disclosed a kind of processing technology of high accuracy fork truck bearing, by using in the processing of cubic boron lathe tool
Hole plane and outer disk substitute grinding technique, reduce grinding process, improve the machining accuracy of product；Optimize freezing simultaneously
Process and temper, improve the hardness of product, make product that there is high bearing capacity, increase the service life, improve security performance.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (5)
1. a kind of processing technology of high accuracy fork truck bearing, it is characterised in that comprise the following steps：Forging-rough turn endoporus plane-
Rough turn outer disk-CNC digital control processings-quenching-freezing processing-tempering-surface light decorations process-the plane of mill two-corase grind is cylindrical-and it is vertical
Square boron carbide lathe tool processing endoporus plane and outer disk-corase grind raceway-fine grinding raceway-superfinishing raceway-corase grind external arc-fine grinding
External arc, the freezing processing is that, in insulation 35-40 minutes, the temperature rise speed during tempering is 5-7 at -82 DEG C ~ -87 DEG C
℃/h。
2. the processing technology of high accuracy fork truck bearing according to claim 1, it is characterised in that the cubic boron car
Knife processes endoporus plane and the machining accuracy of outer disk is less than or equal to 0.015mm.
3. the processing technology of high accuracy fork truck bearing according to claim 1, it is characterised in that cubic boron lathe tool adds
The surface roughness of endoporus plane and outer disk after work is less than or equal to 0.2 μm.
4. the processing technology of high accuracy fork truck bearing according to claim 1, it is characterised in that the freezing processing is
At -85 DEG C in insulation 40 minutes.
5. the processing technology of high accuracy fork truck bearing according to claim 1, it is characterised in that the temperature rise during tempering
Speed is 6 DEG C/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242017.3A CN106624656A (en) | 2016-12-29 | 2016-12-29 | Machining process for high-precision forklift bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242017.3A CN106624656A (en) | 2016-12-29 | 2016-12-29 | Machining process for high-precision forklift bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106624656A true CN106624656A (en) | 2017-05-10 |
Family
ID=58836222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611242017.3A Pending CN106624656A (en) | 2016-12-29 | 2016-12-29 | Machining process for high-precision forklift bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106624656A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080900A (en) * | 2017-12-27 | 2018-05-29 | 中国航发哈尔滨轴承有限公司 | A kind of method that bearing is made using 40Cr15Mo2VN materials |
| CN108500787A (en) * | 2018-02-10 | 2018-09-07 | 杭州博恩机械有限公司 | High-precision automobile hub bearing grinds outer diameter processing method |
Citations (6)
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|---|---|---|---|---|
| US20090103840A1 (en) * | 2005-09-20 | 2009-04-23 | Ntn Corporation | Bearing member and method for manufacturing the same, and bearing unit having bearing member and method for manufacturing the same |
| CN102489637A (en) * | 2011-11-16 | 2012-06-13 | 洛阳Lyc轴承有限公司 | Machining process of ultra-large bearing ferrule blank |
| CN103100823A (en) * | 2012-11-29 | 2013-05-15 | 大连宏润复合轴承有限公司 | Processing technology for bearing |
| CN103148104A (en) * | 2013-03-13 | 2013-06-12 | 泛科轴承集团有限公司 | Processing technology of bearing outer ring |
| CN104526284A (en) * | 2014-12-19 | 2015-04-22 | 常熟市常轴轴承有限公司 | Thin-walled bearing ring lathing process |
| CN105364085A (en) * | 2015-12-15 | 2016-03-02 | 常熟市常轴轴承有限公司 | Turning process of high-precision forklift bearing |
-
2016
- 2016-12-29 CN CN201611242017.3A patent/CN106624656A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090103840A1 (en) * | 2005-09-20 | 2009-04-23 | Ntn Corporation | Bearing member and method for manufacturing the same, and bearing unit having bearing member and method for manufacturing the same |
| CN102489637A (en) * | 2011-11-16 | 2012-06-13 | 洛阳Lyc轴承有限公司 | Machining process of ultra-large bearing ferrule blank |
| CN103100823A (en) * | 2012-11-29 | 2013-05-15 | 大连宏润复合轴承有限公司 | Processing technology for bearing |
| CN103148104A (en) * | 2013-03-13 | 2013-06-12 | 泛科轴承集团有限公司 | Processing technology of bearing outer ring |
| CN104526284A (en) * | 2014-12-19 | 2015-04-22 | 常熟市常轴轴承有限公司 | Thin-walled bearing ring lathing process |
| CN105364085A (en) * | 2015-12-15 | 2016-03-02 | 常熟市常轴轴承有限公司 | Turning process of high-precision forklift bearing |
Non-Patent Citations (2)
| Title |
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| 上海市热处理协会: "《实用热处理手册》", 30 April 2014, 上海科学技术出版社 * |
| 硕涌泉等: "《滚动轴承制造装备》", 31 August 2006, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108080900A (en) * | 2017-12-27 | 2018-05-29 | 中国航发哈尔滨轴承有限公司 | A kind of method that bearing is made using 40Cr15Mo2VN materials |
| CN108500787A (en) * | 2018-02-10 | 2018-09-07 | 杭州博恩机械有限公司 | High-precision automobile hub bearing grinds outer diameter processing method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |