CN105414678A - Gear positioning tool - Google Patents
Gear positioning tool Download PDFInfo
- Publication number
- CN105414678A CN105414678A CN201510879429.7A CN201510879429A CN105414678A CN 105414678 A CN105414678 A CN 105414678A CN 201510879429 A CN201510879429 A CN 201510879429A CN 105414678 A CN105414678 A CN 105414678A
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- CN
- China
- Prior art keywords
- elastic expansion
- expansion sleeve
- positioning tool
- locking nut
- shaft
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention provides a gear positioning tool. The gear positioning tool comprises a core shaft. Two parallel planes are arranged at the left end of the outer circle face of the core shaft. A shaft ring, a shaft neck and a shaft head are sequentially arranged on the right sides of the planes. A left fixing hole and a right fixing hole are formed in the two end faces of the core shaft along the axis of the core shaft. The outer circle face of the shaft neck is a conical face gradually reduced from left to right. An abrasion resisting layer is arranged on the outer circle face of the shaft neck. The shaft neck is sleeved with an annular elastic expansion bushing. The inner wall of the elastic expansion bushing is a conical face matched with the outer circle face of the shaft neck. A plurality of axial expansion and shrinkage grooves are formed in the side wall of the elastic expansion bushing. The shaft head is provided with a lock nut in a threaded connection. The largest diameter of the lock nut is not larger than the external diameter of the elastic expansion bushing. A plurality of counter bores are evenly distributed in the left side wall of the lock nut, and steel balls capable of rotating are embedded in the counter bores. The gear positioning tool is convenient to operate, meanwhile accurate positioning is achieved, gear profiles of gears machined in different batches are very stable, and the gear positioning tool is particularly suitable for the gear shaving procedure of planetary gears.
Description
Technical field
The present invention relates to field of machining, refer to a kind of gear positioning tool especially.
Background technology
Existing gear positioning tool adopts hard-core axial cylindrical face and axial end location, compresses product end surface, carry out shave processing by packing ring, nut.When machining the next workpiece of rear replacing at every turn, nut, packing ring all must be unloaded down, could workpiece be changed.Use this frock, change the workpiece time long, inconvenient operation.Special in carrying out shaving to planetary gear, use this frock to there is location inaccurate, cause the accuracy of gear not high, there is relatively large deviation because of helical angle or profile of tooth and cannot engage well between each gear in planetary gear.
Summary of the invention
The present invention is directed to above-mentioned prior art Problems existing to make improvements, the technical problem that needs improve is: existing gear positioning tool inconvenient operation, and location is inaccurate, so propose a kind of gear positioning tool, can accurately locate while easy to operate.
Technical scheme of the present invention is achieved in that a kind of gear positioning tool, comprise axle, described axle left end periphery has two parallel planes, the right side of described plane is disposed with the axle collar, axle journal and spindle nose, described axle two end faces have left fixing hole and right fixing hole along its axis, the periphery of described axle journal is the conical surface reduced gradually from left to right, described axle journal periphery is provided with wearing layer, described axle journal place is socketed with cyclic spring expansion set, described elastic expansion sleeve inwall is the conical surface coordinated with described axle journal periphery, described elastic expansion sleeve sidewall is provided with several axial breathing groove, described breathing groove end has the circular hole preventing elastic expansion sleeve from ftractureing, described spindle nose has been threaded locking nut, the maximum gauge of described locking nut is not more than the external diameter of elastic expansion sleeve, the left side wall of described locking nut is evenly distributed with counterbore, the steel ball that can rotate is inlaid with in described counterbore, the opening part of described counterbore is provided with and carries out the spacing conical surface to steel ball, the diameter of described steel ball is greater than the degree of depth of described counterbore.
Preferred as one, described breathing groove extends from an end face of elastic expansion sleeve to another end face, and two adjacent breathing grooves extend from different end face.
Preferred as one, the gradient of described elastic expansion sleeve inwall is 1:4, and the described conical surface is greater than 0.85 with the contact area of the periphery of described axle journal and the ratio of cone surface which area.
Preferred as one, described locking nut outer wall is set to step-like, and described locking nut is by the nut head largest diameter of elastic expansion sleeve end, and described locking nut is regular hexagon away from the cross section of elastic expansion sleeve end vertical axis.
Preferred as one, the wearing layer that the periphery of described axle journal is arranged is titanium nitride coating.
After adopting such structure, carrying out gear in Shaving Process, not needing elastic expansion sleeve and locking nut to unload completely, after shaving completes, only locking nut need unscrewed 1 ~ 2 pitch, axle is struck gently with copper rod, just gear can be loaded and unloaded rapidly, easy to operate, shorten the workpiece loading and unloading time.Left fixing hole is utilized to coordinate a steel ball can measure the distance of steel ball to axle collar end face before processing, position and the stroke of shaving cutter is adjusted according to this distance, the tooth-formation of gear that such different batches processes is very stable, is specially adapted to planetary shaving operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of gear positioning tool of the present invention;
Fig. 2 is the sectional view of expansion set in Fig. 1;
Fig. 3 is the left view of locking nut.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Gear positioning tool as depicted in figs. 1 and 2, comprise axle 1, the left end of described axle 1 periphery has two parallel plane 1b, the right side of described plane 1b is disposed with axle collar 1c, axle journal 1d and spindle nose 1e, described axle 1 two end faces have left fixing hole 1a and right fixing hole 1f along axle 1 axis, the periphery of described axle journal 1d is the conical surface reduced gradually from left to right, described axle journal 1d periphery is provided with wearing layer, described axle journal 1d place is socketed with cyclic spring expansion set 2, described elastic expansion sleeve 2 inwall is the conical surface 2a coordinated with described axle journal 1d periphery, described elastic expansion sleeve 2 sidewall is provided with several axial breathing groove 2b, described breathing groove 2b end has the circular hole 2c preventing elastic expansion sleeve 2 from ftractureing, described spindle nose 1e has been threaded locking nut 3, the maximum gauge of described locking nut 3 is not more than the external diameter of elastic expansion sleeve 2, tighten or unscrew locking nut 3 and make elastic expansion sleeve 2 swell and reset.As shown in Figure 3, the left side wall of locking nut 3 is evenly distributed with counterbore, is inlaid with the steel ball 3b that can rotate in counterbore, the opening part of counterbore is provided with and carries out the spacing conical surface to steel ball 3b, and the diameter of steel ball 3b is greater than the degree of depth of counterbore.
In use, only locking nut 3 is screwed 1 ~ 2 pitch, locking nut 3 is made to screw elastic expansion sleeve 2 right side, in locking nut 3 screwing operations Elastic expansion set 2 swell, thus swelling fixation workpiece, when processing a workpiece, only locking nut 3 is loosened 1 ~ 2 pitch, elastic expansion sleeve 2 is loosened, elastic expansion sleeve 2 elastic reset, thus fast unload workpiece; Steel ball 3b simultaneously on locking nut 3 contacts with expansion set 2, in locking nut 3 screwing operations, steel ball 3b can rotate, to reduce the frictional force between locking nut 3 and expansion set 2, locking nut 3 can be rotated smoothly, avoid locking nut 3 and expansion set 2 to cross quick-wearing simultaneously.
In order to promote elastic expansion sleeve 2 elasticity and reseting performance, described breathing groove 2b extends from an end face of elastic expansion sleeve 2 to another end face, and two adjacent breathing groove 2b extend from different end face.
In order to ensure the positioning precision of elastic expansion sleeve 2, the gradient of described elastic expansion sleeve 2 inwall is 1:4, described conical surface 2a is greater than 0.85 with the contact area of the periphery of described axle journal 1d and the ratio of conical surface 2a area, and the coaxiality error assembling rear shaft neck 1d and elastic expansion sleeve 2 can not be greater than 0.02mm.
It is special that in order to ensure elastic expansion sleeve 2 elasticity and reseting performance, the material of elastic expansion sleeve 2 can be 60si2Mn or 20CrMnTi, and through the antiseepage of Overheating Treatment carburizing and quenching spiral shell mosquito, carbon-coating dark 1 ~ 1.4, hardness 58 ~ 63HRC.
Further, described locking nut 3 outer wall is set to step-like, described locking nut 3 is by the nut head 3a largest diameter of elastic expansion sleeve 2 end, described locking nut 3 is regular hexagon away from the cross section of elastic expansion sleeve 2 end vertical axis, and obvious described locking nut 3 also can be arranged to other shape of conveniently tightening and unscrewing locking nut 3 away from elastic expansion sleeve 2 end.
The wearing layer that the periphery of described axle journal 1d is arranged is titanium nitride coating, and titanium nitride coating is very wear-resisting, can effectively prevent axle journal 1d periphery from wearing and tearing, and makes axle 1 Acceptable life long, and effectively preventing affects machining accuracy because of the wearing and tearing of axle journal 1d periphery.
Especially, left fixing hole 1a coordinates a steel ball can measure the distance of steel ball to the end face of axle collar 1c, and adjust position and the stroke of shaving cutter according to this distance, the tooth-formation of gear that such different batches processes is very stable.And two gear positioning tools can be used to process on a machine tool when planet Gear Processing simultaneously, coordinate steel ball to measure steel ball according to left fixing hole 1a and adjust the position of two gear positioning tools and the position of shaving cutter and stroke to the distance of the end face of axle collar 1c, can improve planetary production capacity and machining accuracy like this, make engagement between each gear of planetary gear that processes better.
Obvious the present invention is provided with chamfering in each parts junction, the two ends of such as axle 1, axle journal 1d right-hand member.The present invention is specially adapted to planetary processing.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a gear positioning tool, comprise axle (1), the left end of described axle (1) periphery has two parallel planes (1b), the right side of described plane (1b) is disposed with the axle collar (1c), axle journal (1d) and spindle nose (1e), it is characterized in that: described axle (1) two end face has left fixing hole (1a) and right fixing hole (1f) along axle (1) axis, the periphery of described axle journal (1d) is the conical surface reduced gradually from left to right, described axle journal (1d) periphery is provided with wearing layer, described axle journal (1d) place is socketed with elastic expansion sleeve (2), described elastic expansion sleeve (2) inwall is the conical surface (2a) coordinated with described axle journal (1d) periphery, described elastic expansion sleeve (2) sidewall is provided with several axial breathing groove (2b), described breathing groove (2b) end has the circular hole (2c) preventing elastic expansion sleeve (2) from ftractureing, described spindle nose (1e) has been threaded locking nut (3), the maximum gauge of described locking nut (3) is not more than the external diameter of elastic expansion sleeve (2), the left side wall of described locking nut (3) is evenly distributed with counterbore, the steel ball (3b) that can rotate is inlaid with in described counterbore, the opening part of described counterbore is provided with and carries out the spacing conical surface to steel ball (3b), and the diameter of described steel ball (3b) is greater than the degree of depth of described counterbore.
2. according to gear positioning tool according to claim 1, it is characterized in that: described breathing groove (2b) extends from an end face of elastic expansion sleeve (2) to another end face, and adjacent two breathing grooves (2b) extend from different end face.
3. according to the gear positioning tool described in claim 1 or 2, it is characterized in that: the gradient of described elastic expansion sleeve (2) inwall is 1:4, the contact area of periphery and the ratio of the conical surface (2a) area of the described conical surface (2a) and described axle journal (1d) are greater than 0.85.
4. according to gear positioning tool according to claim 3, it is characterized in that: described locking nut (3) outer wall is set to step-like, nut head (3a) largest diameter that described locking nut (3) is held by elastic expansion sleeve (2), described locking nut (3) is regular hexagon away from the cross section of elastic expansion sleeve (2) end vertical axis.
5. according to gear positioning tool according to claim 1, it is characterized in that: the wearing layer that the periphery of described axle journal (1d) is arranged is titanium nitride coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879429.7A CN105414678A (en) | 2015-12-05 | 2015-12-05 | Gear positioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879429.7A CN105414678A (en) | 2015-12-05 | 2015-12-05 | Gear positioning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105414678A true CN105414678A (en) | 2016-03-23 |
Family
ID=55493457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510879429.7A Pending CN105414678A (en) | 2015-12-05 | 2015-12-05 | Gear positioning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105414678A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1014410A (en) * | 1964-02-04 | 1965-12-22 | Fritz Hurth | A method and means of locating parts on revolving arbors or mandrels |
| US3472092A (en) * | 1967-10-30 | 1969-10-14 | Singer Co | Antibacklash gear |
| US3583714A (en) * | 1968-11-27 | 1971-06-08 | Gleason Works | Chuck and collet for shank pinions and the like |
| CN201889559U (en) * | 2010-11-12 | 2011-07-06 | 资阳南车传动有限公司 | High-accuracy gear grinding device for tape-hole gears |
| CN203390236U (en) * | 2013-08-08 | 2014-01-15 | 重庆蓝黛动力传动机械股份有限公司 | Mandrel with expandable core |
| CN203696155U (en) * | 2014-03-03 | 2014-07-09 | 西南计算机有限责任公司 | Expansion sleeve gear-grinding core shaft |
| CN204035713U (en) * | 2014-08-30 | 2014-12-24 | 綦江祥和机械有限公司 | Gear shaving frock |
| CN204035714U (en) * | 2014-08-30 | 2014-12-24 | 綦江祥和机械有限公司 | A kind of high accuracy gear shaving technology equipment |
| CN104907639A (en) * | 2014-03-14 | 2015-09-16 | 泰州市里华机械有限公司 | Clamp for shaving of driving gear |
-
2015
- 2015-12-05 CN CN201510879429.7A patent/CN105414678A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1014410A (en) * | 1964-02-04 | 1965-12-22 | Fritz Hurth | A method and means of locating parts on revolving arbors or mandrels |
| US3472092A (en) * | 1967-10-30 | 1969-10-14 | Singer Co | Antibacklash gear |
| US3583714A (en) * | 1968-11-27 | 1971-06-08 | Gleason Works | Chuck and collet for shank pinions and the like |
| CN201889559U (en) * | 2010-11-12 | 2011-07-06 | 资阳南车传动有限公司 | High-accuracy gear grinding device for tape-hole gears |
| CN203390236U (en) * | 2013-08-08 | 2014-01-15 | 重庆蓝黛动力传动机械股份有限公司 | Mandrel with expandable core |
| CN203696155U (en) * | 2014-03-03 | 2014-07-09 | 西南计算机有限责任公司 | Expansion sleeve gear-grinding core shaft |
| CN104907639A (en) * | 2014-03-14 | 2015-09-16 | 泰州市里华机械有限公司 | Clamp for shaving of driving gear |
| CN204035713U (en) * | 2014-08-30 | 2014-12-24 | 綦江祥和机械有限公司 | Gear shaving frock |
| CN204035714U (en) * | 2014-08-30 | 2014-12-24 | 綦江祥和机械有限公司 | A kind of high accuracy gear shaving technology equipment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |