CN204209985U - Punch press bent axle and gear assembling device - Google Patents
Punch press bent axle and gear assembling device Download PDFInfo
- Publication number
- CN204209985U CN204209985U CN201420638963.XU CN201420638963U CN204209985U CN 204209985 U CN204209985 U CN 204209985U CN 201420638963 U CN201420638963 U CN 201420638963U CN 204209985 U CN204209985 U CN 204209985U
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- Prior art keywords
- oblique crank
- bent axle
- outer cone
- gear
- cone oblique
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Abstract
The utility model relates to a kind of punch press bent axle and gear assembling device, comprise bent axle, gear and auxiliary end plate, described crankshaft end is provided with outer cone oblique crank Z, the hub centre of described gear offers internal tapered hole, in described internal tapered hole press-in outer cone oblique crank Z and with outer cone oblique crank Z interference fit, axial oil groove is offered in described outer cone oblique crank Z, outer cone oblique crank Z outer wall offers radial oil groove, described axial oil groove one end extends to the outer face of outer cone oblique crank Z, the other end is communicated with radial oil groove, described auxiliary end plate is arranged on internal tapered hole outer end, auxiliary end plate is fixedly connected with the outer end of outer cone oblique crank Z.The utility model is by changing bent axle and gear fit structure, avoid the phenomenon that bent axle is concentrated because of the fatigue rupture caused by keyway existence and stress, make it have can withstand shocks load and alternate load, transmission high pulling torque, the feature of stable drive, thus improve the bearing capacity of bent axle, the intensity strengthening connector and coupling performance simulating, extend its service life.
Description
Technical field
The utility model relates to punch press technical field, especially a kind of punch press bent axle and gear assembling device.
Background technology
The power of punch press is provided by motor, motor by output shaft by power transmission to gear, gear driven crankshaft rotating thereupon, finally causes crank-driven connecting rod and slide block to move back and forth along guide rail.In the process of gear driven crankshaft rotating, crankshaft rotating be made then must to possess certain matching relationship between gear and bent axle.Common lathe middle gear and coordinating between bent axle adopt traditional key connecting formula, although key connecting formula, structure is simple, mounting or dismounting are convenient, but due to the existence of keyway on bent axle, this not only weakens the intensity of bent axle itself, reduces transmission capacity, but also causes the phenomenon that the fatigue rupture of bent axle and stress are concentrated, and then affect bearing capacity and the service life of bent axle, finally affect punch press reliability of operation and stability.Consider the strength problem of bent axle self in the gear of punch press and transmission of crankshaft process, the mounting or dismounting sex chromosome mosaicism of punch press traveling comfort problem and gear and bent axle part when withstanding shocks load and alternate load, therefore traditional key interconnection system can not meet the stability requirement that punch press runs, adopt which kind of fit system could meet mounting or dismounting number of times between gear and bent axle unrestricted actually, energy transmitting large torque, the load that can withstand shocks and alternate load, ensure the stationarity of transmission, and can increase the service life, the utility model proposes the fit structure of a kind of punch press bent axle and gear for this reason.
Utility model content
The technical problems to be solved in the utility model is: the strength problem considering bent axle self in the gear of punch press and transmission of crankshaft process, punch press traveling comfort problem and the mounting or dismounting between the condition lower gear and bent axle of normal use when withstanding shocks load and alternate load, the principle of foundation external member and internal member displacement compression fit to axial, the utility model proposes one and can transmit comparatively high pulling torque, punch press bent axle and the gear assembling device of larger radial load, axial load and bending moment can be born.
The utility model solves the technical scheme that its technical problem adopts: a kind of punch press bent axle and gear assembling device, comprise bent axle, gear and auxiliary end plate, described crankshaft end is provided with outer cone oblique crank Z, the hub centre of described gear offers internal tapered hole, in described internal tapered hole press-in outer cone oblique crank Z and with outer cone oblique crank Z interference fit, axial oil groove is offered in described outer cone oblique crank Z, outer cone oblique crank Z outer wall offers radial oil groove, described axial oil groove one end extends to the outer face of outer cone oblique crank Z, the other end is communicated with radial oil groove, described auxiliary end plate is arranged on internal tapered hole outer end, auxiliary end plate is fixedly connected with the outer end of outer cone oblique crank Z.
Described radial oil groove is arranged on outer cone oblique crank Z outer wall ringwise, hydraulic oil can enter in radial oil groove by axial oil groove, the taper fit face between outer cone oblique crank Z and gear is flowed into again by radial oil groove, the radial oil groove of annular design can ensure that the hydraulic oil distribution in taper fit face is comparatively even, prevents local stuck.
The length of described outer cone oblique crank Z is different from the length of internal tapered hole, the size of outer cone oblique crank Z is slightly smaller than internal tapered hole size, object makes internal tapered hole outside diminished shaft can have certain relative shifting amount, by means of the frictional force be used between increase conical interference-fit face of auxiliary end plate, thus ensure the reliability of assembling and the reliability of transmission.
In fact, when length of fit is longer, then needs the radial oil groove of many ring-types, open axial oil groove between each radial oil groove and connect with it, axial oil groove is connected with annular radial oil groove, thus the hydraulic oil further ensured in taper fit face is uniformly distributed.
The wheel hub outer end of described gear offers notch, the diameter of described notch is greater than the diameter of internal tapered hole, described auxiliary end plate is arranged in notch, auxiliary end plate is fixedly connected with by the outer end of screw with outer cone oblique crank Z, the design of this notch facilitates the assembling of auxiliary end plate, thus makes assembling more firmly stable.
The beneficial effects of the utility model are: punch press bent axle of the present utility model and gear assembling device are by the effect of hydraulic oil, the internal tapered hole internal diameter of gear is expanded, the reduced diameter of the outer cone oblique crank Z of bent axle, cause gear and bent axle that corresponding elastic deformation occurs, and in taper fit face outside between diminished shaft and gear, form one deck high pressure oil film, high pressure oil film makes the coefficient of friction of mating surface greatly reduce, on gear, now apply certain axial thrust gear slowly can be pressed into bent axle, venting hydraulic oil after gear is pressed into assigned position, the internal tapered hole of gear and the outer cone oblique crank Z of bent axle recover elastic deformation, thus make to form certain stationary fit interference between the taper fit face of gear and bent axle, and then by means of the effect of auxiliary end plate, increase the interaction force between taper fit face, and then achieve and transmit comparatively high pulling torque, and larger radial load can be born, the object of axial load and bending moment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation before the utility model gear and bent axle are assembled;
Fig. 2 is the structural representation after the utility model gear and bent axle are assembled;
In figure: 1. bent axle, 2. gear, 3. outer cone oblique crank Z, 4. internal tapered hole, 5. axial oil groove, 6. radial oil groove, 7. auxiliary end plate, 8. screwed hole.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As Fig. 1, shown in Fig. 2, a kind of punch press bent axle and gear assembling device, comprise bent axle 1, gear 2 and auxiliary end plate 7, described bent axle 1 end is provided with outer cone oblique crank Z 3, described gear 2 center offers internal tapered hole 4, described internal tapered hole 4 to be pressed in outer cone oblique crank Z 3 and with outer cone oblique crank Z 3 interference fit, the length of outer cone oblique crank Z 3 is slightly smaller than the length of internal tapered hole 4, axial oil groove 5 is offered in described outer cone oblique crank Z 3, outer cone oblique crank Z 3 outer wall offers radial oil groove 6, described axial oil groove 5 one end extends to the outer face of outer cone oblique crank Z 3, the other end is communicated with radial oil groove 6, the wheel hub outer end of described gear 2 offers notch, the diameter of described notch is greater than the diameter of internal tapered hole 4, described auxiliary end plate 7 is arranged in notch, auxiliary end plate 7 is fixedly connected with the screwed hole 8 of the outer end of outer cone oblique crank Z 3 by screw.
Described radial oil groove 6 is arranged on outer cone oblique crank Z 3 outer wall ringwise, and namely the outer wall of diminished shaft 3 offers an annular notches outside.
Described axial oil groove 5 comprises horizontal segment and vertical section, and described horizontal segment one end extends to outer cone oblique crank Z 3 outer face, and the horizontal segment other end outside diminished shaft 3 inner face extends, and is communicated with radial oil groove 6 by vertical section.Vertical section can design many, and oil-in and the horizontal segment of each vertical section collect, and the oil-out of vertical section is communicated with the diverse location of radial oil groove 6.
When gear 2 assembles with bent axle 1, first gear 2 and bent axle 1 are carried out pre-assembled, then again hydraulic oil is pressed into axial oil groove 5 thereupon, while hydraulic oil press-in axial oil groove 5, hydraulic oil is along the guiding of axial oil groove 5, the Cone fit face of gear 2 and bent axle 1 is injected into by radial oil groove 6, now due to the effect of hydraulic oil, external member internal diameter is forced to be expanded, internal member reduced diameter, the i.e. internal tapered hole 4 internal diameter expansion of gear 2, outer cone oblique crank Z 3 reduced diameter of bent axle 1, make gear 2 and bent axle 1 that corresponding elastic deformation occur, along with the carrying out of elastic deformation, formation one annular space is gradually started between the taper surface that gear 2 matches with bent axle 1, hydraulic oil is injected into this annular space by radial oil groove 6, hydraulic oil be full of annular space then time then form an annular high voltage oil lamella, then due to the existence of hydraulic oil rete, the coefficient of friction in the Cone fit face between gear 2 and bent axle 1 is greatly reduced, at this moment on gear 2, certain axial thrust is applied by gear 2 slowly press-in bent axle 1, until be pressed into assigned position.Venting hydraulic oil after gear 2 is pressed into assigned position, at this moment due to the release of elastic potential energy, the internal tapered hole 4(external member of gear 2) with the outer cone oblique crank Z 3(internal member of bent axle 1) recover elastic deformation, now form very large interface pressure between external member and internal member, namely between its coned face cooperatively interacted, certain stationary fit interference is formed, thus realize transmitting larger load, and the object of larger radial load, axial load and bending moment can be born.For increasing the interaction force between taper fit face, then require that the length of outer cone oblique crank Z 3 is slightly smaller than the length of internal tapered hole 4, make outer cone oblique crank Z 3 can have certain rate of travel in internal tapered hole 4, by means of auxiliary end plate 7, the periphery of auxiliary end plate 7 is along directly contacting with the hub contacts of gear 2, and utilize the screwed hole 8 of bolt and bent axle 1 outer cone oblique crank Z 3 end to be fixed together, thus realize transmitting comparatively high pulling torque, and the object of larger radial load, axial load and bending moment can be born
Compared with prior art, the utility model tool has the following advantages:
1, the utility model is by changing bent axle 1 and gear 2 fit structure, avoids because keyway exists the phenomenon that the stress that produces concentrates, thus the intensity of enhancing connector, make between mating surface, to possess good coupling performance simulating;
2, the utility model is by changing bent axle 1 and gear 2 fit structure, solves conventional fit structure bent axle 1 fatiguability when bearing larger load and destroys, the problem of the bearing capacity deficiency of bent axle 1, thus extend its service life;
3, the utility model structural design is simple, feel relieved, and conjunction plane not easy damaged when dismounting, installs and removes number of times unrestricted, and have can withstand shocks load and alternate load, transmission high pulling torque, the feature of stable drive.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (5)
1. a punch press bent axle and gear assembling device, it is characterized in that: comprise bent axle, gear and auxiliary end plate, described crankshaft end is provided with outer cone oblique crank Z, the hub centre of described gear offers internal tapered hole, in described internal tapered hole press-in outer cone oblique crank Z and with outer cone oblique crank Z interference fit, axial oil groove is offered in described outer cone oblique crank Z, outer cone oblique crank Z outer wall offers radial oil groove, described axial oil groove one end extends to the outer face of outer cone oblique crank Z, the other end is communicated with radial oil groove, described auxiliary end plate is arranged on internal tapered hole outer end, auxiliary end plate is fixedly connected with the outer end of outer cone oblique crank Z.
2. punch press bent axle as claimed in claim 1 and gear assembling device, is characterized in that: described radial oil groove is arranged on outer cone oblique crank Z outer wall ringwise.
3. punch press bent axle as claimed in claim 1 and gear assembling device, is characterized in that: the length of described outer cone oblique crank Z is less than the length of internal tapered hole.
4. punch press bent axle as claimed in claim 1 and gear assembling device, it is characterized in that: described axial oil groove comprises horizontal segment and vertical section, described horizontal segment one end extends to outer cone oblique crank Z outer face, the outside diminished shaft inner face of the horizontal segment other end extends, and is communicated with radial oil groove by vertical section.
5. punch press bent axle as claimed in claim 1 and gear assembling device, it is characterized in that: the wheel hub outer end of described gear offers notch, the diameter of described notch is greater than the diameter of internal tapered hole, described auxiliary end plate is arranged in notch, and auxiliary end plate is fixedly connected with by the outer end of screw with outer cone oblique crank Z.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638963.XU CN204209985U (en) | 2014-10-31 | 2014-10-31 | Punch press bent axle and gear assembling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420638963.XU CN204209985U (en) | 2014-10-31 | 2014-10-31 | Punch press bent axle and gear assembling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204209985U true CN204209985U (en) | 2015-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420638963.XU Expired - Fee Related CN204209985U (en) | 2014-10-31 | 2014-10-31 | Punch press bent axle and gear assembling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204209985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441728A (en) * | 2014-10-31 | 2015-03-25 | 江苏中兴西田数控科技有限公司 | Crankshaft and gear assembly device for punch press |
| CN106812783A (en) * | 2015-12-02 | 2017-06-09 | 安徽鸿远机电科技有限公司 | A kind of small wheel shaft of drilling and milling machine |
-
2014
- 2014-10-31 CN CN201420638963.XU patent/CN204209985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441728A (en) * | 2014-10-31 | 2015-03-25 | 江苏中兴西田数控科技有限公司 | Crankshaft and gear assembly device for punch press |
| CN106812783A (en) * | 2015-12-02 | 2017-06-09 | 安徽鸿远机电科技有限公司 | A kind of small wheel shaft of drilling and milling machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20191031 |