CN204307968U - A kind of backward extrusion spline drift - Google Patents
A kind of backward extrusion spline drift Download PDFInfo
- Publication number
- CN204307968U CN204307968U CN201420741114.7U CN201420741114U CN204307968U CN 204307968 U CN204307968 U CN 204307968U CN 201420741114 U CN201420741114 U CN 201420741114U CN 204307968 U CN204307968 U CN 204307968U
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- CN
- China
- Prior art keywords
- spline
- pressure
- bearing portion
- punch
- connecting portion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D2001/103—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via splined connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0023—Shaping by pressure
Abstract
The utility model provides a kind of backward extrusion spline drift, comprise pressure-bearing portion, connecting portion and spline punch, the center line of described pressure-bearing portion, connecting portion and spline punch is all on same straight line, and described pressure-bearing portion, connecting portion and spline punch are structure as a whole.A kind of backward extrusion spline drift that the utility model proposes, uses described backward extrusion spline drift, can effectively improve inner spline gear to precision, ensure the tolerance of spline interrod spacing 0.10mm in making internal spline.
Description
Technical field
The utility model belongs to precision metal forging field, is specifically related to a kind of backward extrusion spline drift.
Background technology
Current internal spline axial workpiece is the vital part in cycloid hydraulic motor, also referred to as hydraulic pressure output shaft, the internal spline that one section of 25mm is long is had within it bottom hole, this forging is through fine finishining and after being assembled into motor, internal spline and a universal drive shaft match to transmit power, and the height of internal spline precision directly has influence on the performance such as noise, service life of motor running.Therefore, the internal spline precision General Requirements of this forging meets 9 grades in ISO1328 standard, and internal spline interrod spacing tolerance is 0.10mm.We are as adopted conventional backward extrusion spline punch structure form, namely arrange the extruding land that 3mm is long in the front end of spline drift, rear end is bilaterally reduce gap after the extruding of 0.20mm, due to the Plastic Flow of metal during extruding, the interrod spacing that then can form internal spline oral area is little, and bottom bars spacing is large; As adopted the spline drift extruding without extruding land, then due to elastic deformation when die, drift extruding, forging internal spline interrod spacing is that oral area is large, and bottom is little, and upper and lower interrod spacing tapering is about 0.05mm.Like this, due to the existence of internal spline tapering, not only spline tooth cannot meet the demands to precision, and the tolerance of spline interrod spacing 0.10mm is also difficult to ensure.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of backward extrusion spline drift, overcomes above-mentioned defect, and solving internal spline has tapering, is difficult to the problem of the tolerance meeting spline interrod spacing 0.10mm.
For solving the problems of the technologies described above, the utility model provides a kind of backward extrusion spline drift, comprises pressure-bearing portion, connecting portion and spline punch, and the center line of described pressure-bearing portion, connecting portion and spline punch is all on same straight line, described pressure-bearing portion, connecting portion and spline punch are structure as a whole
Described pressure-bearing portion comprises the first pressure-bearing portion, second pressure-bearing portion and the 3rd pressure-bearing portion, described connecting portion comprises the first connecting portion, second connecting portion and the 3rd connecting portion, described first pressure-bearing portion has top and lower end, described spline punch has upper end and bottom, the top in described first pressure-bearing portion connects actuating unit, transition is connected by described first connecting portion between the lower end in described first pressure-bearing portion and the second pressure-bearing portion, transition is connected by described second connecting portion between described second pressure-bearing portion and described 3rd pressure-bearing portion, transition is connected by described 3rd connecting portion between described 3rd pressure-bearing portion and the upper end of described spline punch, the diameter in described first pressure-bearing portion is greater than the diameter in described second pressure-bearing portion, the diameter in described second pressure-bearing portion is greater than the diameter in described 3rd pressure-bearing portion, the diameter in described 3rd pressure-bearing portion is greater than the diameter of described spline punch, the diameter of the upper end of described spline punch is less than the diameter of the bottom of described spline punch.
As a kind of preferred version of a kind of backward extrusion spline drift described in the utility model, the diameter 0.05mm less of the diameter of the bottom of described spline punch of the upper end of described spline punch.
As a kind of preferred version of a kind of backward extrusion spline drift described in the utility model, the distance of upper end to the bottom of described spline punch of described spline punch is 25mm.
As a kind of preferred version of a kind of backward extrusion spline drift described in the utility model, the number of teeth of described spline punch is 12, and modulus is 2.1167, and pressure angle is 30 °.
As a kind of preferred version of a kind of backward extrusion spline drift described in the utility model, the tapering of described spline punch is 0.05 ~ 0.08mm.
Compared with prior art, a kind of backward extrusion spline drift that the utility model proposes, uses described backward extrusion spline drift, can effectively improve inner spline gear to precision, ensure the tolerance of spline interrod spacing 0.10mm in making internal spline.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, 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.Wherein,
Fig. 1 is the structural representation of the front view of a kind of backward extrusion spline drift of the present utility model;
Fig. 2 is the cross-sectional view along D-D of Fig. 1; With
Fig. 3 is the cross-sectional view along C-C of Fig. 1.
Wherein: 1 be the first pressure-bearing portion, 2 be the second pressure-bearing portion, 3 be the 3rd pressure-bearing portion, 4 be the first connecting portion, 5 be the second connecting portion, 6 be the 3rd connecting portion, 7 be top, 8 be spline punch, 9 be bottom.
Detailed description of the invention
A kind of backward extrusion spline drift described in the utility model, it comprises: pressure-bearing portion (not shown), connecting portion (not shown) and spline punch 8, the center line of described pressure-bearing portion, connecting portion and spline punch 8 is all on same straight line, and described pressure-bearing portion, connecting portion and spline punch 8 are structure as a whole.
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail the utility model below in conjunction with detailed description of the invention.
First, alleged herein " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the utility model.Different local in this manual " in one embodiment " occurred not all refers to same embodiment, neither be independent or optionally mutually exclusive with other embodiments embodiment.
Secondly; the utility model utilizes structural representation etc. to be described in detail; when describing the utility model embodiment in detail; for ease of explanation; represent that the schematic diagram of backward extrusion spline punch structure can be disobeyed general ratio and be made partial enlargement; and described schematic diagram is example, it should not limit the scope of the utility model protection at this.In addition, the three dimensions of length, width and the degree of depth should be comprised in actual fabrication.
Embodiment one
Refer to Fig. 1, Fig. 1 is the structural representation of the front view of a kind of backward extrusion spline drift of the present utility model.As shown in Figure 1, described pressure-bearing portion comprises the first pressure-bearing portion 1, second pressure-bearing portion 2 and the 3rd pressure-bearing portion 3, described connecting portion comprises the first connecting portion 4, second connecting portion 5 and the 3rd connecting portion 6, described first pressure-bearing portion 1 has top 7 and lower end (not shown), described spline punch 8 has upper end (not shown) and bottom 9, the top 7 in described first pressure-bearing portion 1 connects actuating unit (not shown), transition is connected by described first connecting portion 4 between the lower end in described first pressure-bearing portion 1 and the second pressure-bearing portion 2, transition is connected by described second connecting portion 5 between described second pressure-bearing portion 2 and described 3rd pressure-bearing portion 3, transition is connected by described 3rd connecting portion 6 between described 3rd pressure-bearing portion 3 and the upper end of described spline punch 8, the diameter in described first pressure-bearing portion 1 is greater than the diameter in described second pressure-bearing portion 2, the diameter in described second pressure-bearing portion 2 is greater than the diameter in described 3rd pressure-bearing portion 3, the diameter in described 3rd pressure-bearing portion 3 is greater than the diameter of described spline punch 8, the diameter of the upper end of described spline punch 8 is less than the diameter of the bottom 9 of described spline punch 8.
Consult Fig. 2 and Fig. 3 incorporated by reference to Fig. 1, Fig. 2 is the cross-sectional view along D-D of Fig. 1; Fig. 3 is the cross-sectional view along C-C of Fig. 1.As shown in Figures 2 and 3, the diameter d 1 of the upper end of described spline punch 8 0.05mm less of the diameter d 2 of the bottom 9 of described spline punch 8.
Please continue to refer to Fig. 1, the distance L of upper end to the bottom 9 of described spline punch 8 of described spline punch 8 is 25mm.
In the present embodiment, the number of teeth of described spline punch 8 is 12, modulus is 2.1167, pressure angle is 30 °, the tapering of described spline punch 8 is 0.05 ~ 0.08mm, again because the distance L of upper end to the bottom 9 of described spline punch 8 of described spline punch 8 is 25mm, so the ratio of the difference of concentric reducer diameter and length is 0.05:25 ~ 0.08:25.
The parts of above-mentioned backward extrusion spline drift include but not limited to above-mentioned kind.
What the those of ordinary skill in affiliated field should be understood that is, one of feature of the present utility model or object are: backward extrusion spline drift described in the utility model, the spline extruded parts of spline drift is made slight taper, make extruding punch head spline size large, rear end spline size is less than normal, and tapering is 0.05 ~ 0.08mm.The concrete preparation method of spline drift: cut out tapering electrode with Linear cut, then spark discharge processing, is done the external splines of tapering by electrode obit.Detected by forging test and forging, the internal spline interrod spacing tapering that the spline drift of this form squeezes out reduces 0.01 ~ 0.02mm, and the teeth directional precision of internal spline is significantly improved.
It should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a backward extrusion spline drift, is characterized in that: comprise pressure-bearing portion, connecting portion and spline punch, and the center line of described pressure-bearing portion, connecting portion and spline punch is all on same straight line, and described pressure-bearing portion, connecting portion and spline punch are structure as a whole,
Described pressure-bearing portion comprises the first pressure-bearing portion, second pressure-bearing portion and the 3rd pressure-bearing portion, described connecting portion comprises the first connecting portion, second connecting portion and the 3rd connecting portion, described first pressure-bearing portion has top and lower end, described spline punch has upper end and bottom, the top in described first pressure-bearing portion connects actuating unit, transition is connected by described first connecting portion between the lower end in described first pressure-bearing portion and the second pressure-bearing portion, transition is connected by described second connecting portion between described second pressure-bearing portion and described 3rd pressure-bearing portion, transition is connected by described 3rd connecting portion between described 3rd pressure-bearing portion and the upper end of described spline punch, the diameter in described first pressure-bearing portion is greater than the diameter in described second pressure-bearing portion, the diameter in described second pressure-bearing portion is greater than the diameter in described 3rd pressure-bearing portion, the diameter in described 3rd pressure-bearing portion is greater than the diameter of described spline punch, the diameter of the upper end of described spline punch is less than the diameter of the bottom of described spline punch.
2. backward extrusion spline drift as claimed in claim 1, is characterized in that: the diameter 0.05mm less of the diameter of the bottom of described spline punch of the upper end of described spline punch.
3. backward extrusion spline drift as claimed in claim 1, is characterized in that: the distance of upper end to the bottom of described spline punch of described spline punch is 25mm.
4. backward extrusion spline drift as claimed in claim 1, is characterized in that: the number of teeth of described spline punch is 12, and modulus is 2.1167, and pressure angle is 30 °.
5. backward extrusion spline drift as claimed in claim 1, is characterized in that: the tapering of described spline punch is 0.05 ~ 0.08mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741114.7U CN204307968U (en) | 2014-11-28 | 2014-11-28 | A kind of backward extrusion spline drift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741114.7U CN204307968U (en) | 2014-11-28 | 2014-11-28 | A kind of backward extrusion spline drift |
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| Publication Number | Publication Date |
|---|---|
| CN204307968U true CN204307968U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420741114.7U Active CN204307968U (en) | 2014-11-28 | 2014-11-28 | A kind of backward extrusion spline drift |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762786A (en) * | 2017-03-17 | 2017-05-31 | 青岛泰德汽车轴承股份有限公司 | A kind of shaft device of water pump shaft connecting bearings |
| CN109862974A (en) * | 2016-11-17 | 2019-06-07 | Ntn株式会社 | The spline processing method of wheel bearing |
-
2014
- 2014-11-28 CN CN201420741114.7U patent/CN204307968U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862974A (en) * | 2016-11-17 | 2019-06-07 | Ntn株式会社 | The spline processing method of wheel bearing |
| CN106762786A (en) * | 2017-03-17 | 2017-05-31 | 青岛泰德汽车轴承股份有限公司 | A kind of shaft device of water pump shaft connecting bearings |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |