CN204248130U - A kind of Fixture for Gear-shaving - Google Patents
A kind of Fixture for Gear-shaving Download PDFInfo
- Publication number
- CN204248130U CN204248130U CN201420682552.0U CN201420682552U CN204248130U CN 204248130 U CN204248130 U CN 204248130U CN 201420682552 U CN201420682552 U CN 201420682552U CN 204248130 U CN204248130 U CN 204248130U
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- CN
- China
- Prior art keywords
- positioning
- gear
- mandrel
- shaving
- sleeve
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of Fixture for Gear-shaving, comprise mandrel, mandrel is multidiameter, the center of this mandrel right side has the center hole matched with gear shaving machine stationary center, the left part of described mandrel is positioning boss portion, position on the right side of this positioning boss portion is positioning and guiding portion, conical journal is provided with between described positioning boss portion and positioning and guiding portion, described conical journal place cone match is provided with elastic expansion-sleeve, described elastic expansion-sleeve is coaxially arranged with plug and rotating nut to the right successively, described rotating nut is threaded with adopting between mandrel, stop tab is provided with between positioning boss portion and positioning and guiding portion, described stop tab is cam-like, described stop tab comprises lug boss, described lug boss is located at the top in positioning and guiding portion, described lug boss is provided with the groove of inclination, pigment is placed with in described groove, the utility model is to solve the problem that there is gap at process middle gear and mandrel.
Description
Technical field
The utility model relate to lathe cog processing frock technology, particularly relate to a kind of Fixture for Gear-shaving.
Background technology
Shaving is a kind of fine finishining mode generally adopted in Gear Processing process, plays decisive role to the accuracy of gear.The Fixture for Gear-shaving many employings compression type used at present or employing helical clamping mode, compression type Fixture for Gear-shaving: during Shaving Process, is first through on shaving mandrel by gear, pressure cap successively, be then placed on two top between, hold out against by right side is top, then process; Compression type is easy to operate, is convenient to clamping workpiece, and clamping makes to form frictional force between pressure cap and machining gears to realize by the top pressure of hydraulic pressure.Screw clamp compact form Fixture for Gear-shaving: during Shaving Process, is first through gear on shaving mandrel, with nut screwing clamping, be then placed on lathe top between process; Screw clamp compact form clamping is loaded down with trivial details, and clamping screws pressure by screw thread to be made to form frictional force between nut and gear to realize.
At present, the Fixture for Gear-shaving (as shown in Figure 3) that Gear Processing uses remains the mode adopting mandrel location, face clamping, the positioning precision of the Fixture for Gear-shaving of this mechanism is on the low side, effectively can not eliminate the various tooth surface errors of gear hobbing, make the shaving precision of institute's machining gears part on the low side, can not meet the instructions for use of institute's machining gears, the use noise of institute's machining gears and life-span are all difficult to meet design requirement.The shortcoming of Fixture for Gear-shaving is: the gap that must have 1 ~ 2mm between inner hole of workpiece and shaving mandrel, and guarantee assembles; After using, along with the increase of wear extent, gap increases gradually, in process, cause the center line of machining gears to there occurs relative to the center line of mandrel and offset, cause design basis not overlap with machining benchmark, affect the accuracy of machining gears location, after causing machining gears shaving, error increases.
Utility model content
The purpose of this utility model is to provide a kind of Fixture for Gear-shaving easy to assembly, and can also solve the problem that there is gap at process middle gear and mandrel.
To achieve these goals, the utility model provides following technical scheme: a kind of Fixture for Gear-shaving, comprise mandrel, mandrel is multidiameter, the center of this mandrel right side has the center hole matched with gear shaving machine stationary center, the left part of described mandrel is positioning boss portion, position on the right side of this positioning boss portion is positioning and guiding portion, conical journal is provided with between described positioning boss portion and positioning and guiding portion, described conical journal place cone match is provided with elastic expansion-sleeve, described elastic expansion-sleeve is coaxially arranged with plug and end face nut to the right successively, described end face nut is threaded with adopting between mandrel, stop tab is provided with between described positioning boss portion and positioning and guiding portion, described stop tab is cam-like, described stop tab comprises lug boss, described lug boss is located at the top in positioning and guiding portion, described lug boss is provided with the groove of inclination, pigment is placed with in described groove.
The operation principle of the technical program is such: geared sleeve to be processed is located at the conical journal place on mandrel, because conical journal place cone match is provided with elastic expansion-sleeve, Gu the endoporus of gear to be processed can contact with elastic expansion-sleeve, and be reserved with the gap of 1 ~ 2mm between the two, be convenient to the assembling of gear to be processed, after gear has assembled, before Shaving Process, because end face nut is threaded with adopting between mandrel, by rotary end surface nut compressing plug, elastic expansion-sleeve just can expand, until the cylindrical of ringfeder contacts with the endoporus of gear, thus eliminate the gap of mandrel in the endoporus of gear to be processed and Fixture for Gear-shaving, the center line of machining gears is overlapped with the center line of mandrel, design basis and machining benchmark can be consistent, ensure that the positioning precision of gear to be processed.In addition, between positioning boss portion and positioning and guiding portion, stop tab is set, the lug boss of stop tab is located at the top in positioning and guiding portion, when clamping, gear to be processed is fixed on mandrel, first with cutter, examination cutter is carried out to workpiece, to detect workpiece, whether clamping is firm, lug boss arranges the groove of inclination, pigment is placed with in groove, if workpiece is shifted when cutter examination cutter, operator can by the vestige whether stop tab having pigment slide, thus judge that whether workpiece clamping on fixture is firm, if observed corresponding coloured cut, can clamping again, avoid because clamping loosely causes Product processing defective or produce and the loss such as to scrap.
Preferably, described elastic expansion-sleeve is connected with adopting cone match between plug, and conformability is good, is beneficial to elastic expansion-sleeve and expands to the endoporus place of gear.
Preferably, the diameter in described positioning boss portion is greater than the diameter 15 ~ 20mm in positioning and guiding portion, meets before mandrel assembles gear to be processed, still leaves the gap of 1 ~ 2mm between the endoporus of gear and elastic expansion-sleeve, be convenient to the assembling of gear to be processed.
Preferably, the tapering at described conical journal place is be the angle of 120 degree with horizontal direction.
Preferably, described elastic expansion-sleeve is connected with adopting holding pin between mandrel, easy to connect, simple, elastic expansion-sleeve is contacted with the endoporus of gear to be processed, after long-time use wearing and tearing, only need change elastic expansion-sleeve and mandrel need not be changed, reducing the manufacturing cost of gear essence base.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Fixture for Gear-shaving embodiment of the utility model;
Fig. 2 is the schematic diagram of stop tab in a kind of Fixture for Gear-shaving embodiment of the utility model;
Fig. 3 is the structural representation before a kind of Fixture for Gear-shaving of the utility model is improved.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
As shown in Figure 1, a kind of Fixture for Gear-shaving, comprise mandrel 1, mandrel 1 is multidiameter, the center of mandrel 1 right side has the center hole matched with gear shaving machine stationary center, the left part of mandrel 1 is positioning boss portion 5, position on the right side of positioning boss portion 5 is positioning and guiding portion 6, the diameter in positioning boss portion 5 is greater than the diameter 15mm in positioning and guiding portion 6, conical journal 7 is provided with between positioning boss portion 5 and positioning and guiding portion 6, conical journal 7 place cone match is provided with elastic expansion-sleeve 2, the tapering at conical journal 7 place is be the angle of 120 degree with horizontal direction, elastic expansion-sleeve 2 is coaxially arranged with plug 3 and end face nut 4 to the right successively, cone match is adopted to be connected between elastic expansion-sleeve 2 with plug 3, adopt between end face nut 4 with mandrel 1 and be threaded, holding pin is adopted to be connected between elastic expansion-sleeve 2 with mandrel 1.
As shown in Figure 2, be provided with stop tab 8 between positioning boss portion 5 and positioning and guiding portion 6, stop tab 8 is in cam-like, stop tab 8 comprises lug boss 9, lug boss 9 is located at the top in positioning and guiding portion 6, and lug boss 9 is provided with the groove 10 of inclination, is placed with pigment 11 in groove 10.
In the present embodiment, geared sleeve to be processed is located at conical journal 7 place on mandrel 1, because conical journal 7 place cone match is provided with elastic expansion-sleeve 2, Gu the endoporus of gear to be processed can contact with elastic expansion-sleeve 2, and be reserved with the gap of 1mm between the two, be convenient to the assembling of gear to be processed, after gear has assembled, before Shaving Process, be threaded owing to adopting between end face nut 4 with mandrel 1, plug 3 is compressed by rotary end surface nut 4, elastic expansion-sleeve 2 just can expand, until the cylindrical of ringfeder contacts with the endoporus of gear, thus eliminate the gap of mandrel 1 in the endoporus of gear to be processed and Fixture for Gear-shaving, the center line of machining gears is overlapped with the center line of mandrel 1, design basis and machining benchmark can be consistent, ensure that the positioning precision of gear to be processed, stop tab 8 is set between positioning boss portion 5 and positioning and guiding portion 6, the lug boss 9 of stop tab 8 is located at the top in positioning and guiding portion 6, when clamping, gear to be processed is fixed on mandrel 1, first with cutter, examination cutter is carried out to workpiece, to detect workpiece, whether clamping is firm, lug boss 9 arranges the groove 10 of inclination, pigment 11 is placed with in groove 10, if workpiece is shifted when cutter examination cutter, operator can by the vestige whether stop tab 8 having pigment 11 slide, thus judge that whether workpiece clamping on fixture is firm, if observed corresponding coloured cut, can clamping again, avoid because clamping loosely causes Product processing defective or produce and the loss such as to scrap.
In addition, adopt cone match to be connected between elastic expansion-sleeve 2 with plug 3, conformability is good, is beneficial to elastic expansion-sleeve 2 and expands to the endoporus place of gear; The excircle dimension in positioning boss portion 5 is greater than the excircle dimension 15mm in positioning and guiding portion 6, meets before mandrel 1 assembles gear to be processed, still leaves the gap of 1 ~ 2mm, be convenient to the assembling of gear to be processed between the endoporus of gear and elastic expansion-sleeve 2; Holding pin is adopted to be connected between elastic expansion-sleeve 2 with mandrel 1, easy to connect, simple, elastic expansion-sleeve 2 is contacted, after long-time use wearing and tearing with the endoporus of gear to be processed, only need change elastic expansion-sleeve 2 and mandrel 1 need not be changed, reducing the manufacturing cost of gear essence base.
The each parameter comparison of product before and after Fixture for Gear-shaving technological improvement:
Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (5)
1. a Fixture for Gear-shaving, comprise mandrel, mandrel is multidiameter, the center of this mandrel right side has the center hole matched with gear shaving machine stationary center, the left part of described mandrel is positioning boss portion, position on the right side of this positioning boss portion is positioning and guiding portion, conical journal is provided with between described positioning boss portion and positioning and guiding portion, it is characterized in that, described conical journal place cone match is provided with elastic expansion-sleeve, described elastic expansion-sleeve is coaxially arranged with plug and end face nut to the right successively, described end face nut is threaded with adopting between mandrel, stop tab is provided with between described positioning boss portion and positioning and guiding portion, described stop tab is cam-like, described stop tab comprises lug boss, described lug boss is located at the top in positioning and guiding portion, described lug boss is provided with the groove of inclination, pigment is placed with in described groove.
2. a kind of Fixture for Gear-shaving as claimed in claim 1, is characterized in that, described elastic expansion-sleeve is connected with adopting cone match between plug.
3. a kind of Fixture for Gear-shaving as claimed in claim 1, is characterized in that, the diameter in described positioning boss portion is greater than the diameter 15 ~ 20mm in positioning and guiding portion.
4. a kind of Fixture for Gear-shaving as claimed in claim 1, is characterized in that, the tapering at described conical journal place is be the angle of 120 degree with horizontal direction.
5. a kind of Fixture for Gear-shaving as claimed in claim 1 or 2, is characterized in that, described elastic expansion-sleeve is connected with adopting holding pin between mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682552.0U CN204248130U (en) | 2014-11-16 | 2014-11-16 | A kind of Fixture for Gear-shaving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682552.0U CN204248130U (en) | 2014-11-16 | 2014-11-16 | A kind of Fixture for Gear-shaving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204248130U true CN204248130U (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420682552.0U Expired - Fee Related CN204248130U (en) | 2014-11-16 | 2014-11-16 | A kind of Fixture for Gear-shaving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204248130U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378142A (en) * | 2017-07-19 | 2017-11-24 | 重庆齿轮箱有限责任公司 | Gear grinding tooling |
| CN110355428A (en) * | 2019-07-09 | 2019-10-22 | 中国航发哈尔滨东安发动机有限公司 | A kind of enhanced gear core shaft structure of rigidity |
| CN113607020A (en) * | 2021-07-26 | 2021-11-05 | 成都飞机工业（集团）有限责任公司 | High-precision positioning device and positioning method for inner hole part |
-
2014
- 2014-11-16 CN CN201420682552.0U patent/CN204248130U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107378142A (en) * | 2017-07-19 | 2017-11-24 | 重庆齿轮箱有限责任公司 | Gear grinding tooling |
| CN110355428A (en) * | 2019-07-09 | 2019-10-22 | 中国航发哈尔滨东安发动机有限公司 | A kind of enhanced gear core shaft structure of rigidity |
| CN113607020A (en) * | 2021-07-26 | 2021-11-05 | 成都飞机工业（集团）有限责任公司 | High-precision positioning device and positioning method for inner hole part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20181116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |