CN209753678U - Differential gear axial shunting cold extrusion forming device - Google Patents
Differential gear axial shunting cold extrusion forming device Download PDFInfo
- Publication number
- CN209753678U CN209753678U CN201822109647.4U CN201822109647U CN209753678U CN 209753678 U CN209753678 U CN 209753678U CN 201822109647 U CN201822109647 U CN 201822109647U CN 209753678 U CN209753678 U CN 209753678U
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- die
- reposition
- cold extrusion
- redundant personnel
- milling cutter
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Abstract
The utility model relates to an automotive differential processing field discloses a differential gear axial reposition of redundant personnel cold extrusion forming device. This cold extrusion forming device of differential gear axial reposition of redundant personnel includes terrace die, base, die, milling cutter, bearing, the base is formed with the circular port, the die is a terminal surface concave yield and forms the cylindricality with the bevel gear same profile face of treating processing, the die has the outside in bevel gear profile face terminal surface orientation hole, and another terminal surface is provided with the reposition of redundant personnel chamber that switches on with work piece shaping curved surface, it is provided with to reposition of redundant personnel the intracavity milling cutter, the milling cutter pivot passes through the bearing with die coaxial coupling. The utility model provides a this kind of device simple structure reduces the reposition of redundant personnel surplus and influences gear extrusion shaping precision, and then promotes cold extrusion bevel gear machining precision.
Description
Technical Field
The utility model relates to an automotive differential processing field specifically relates to a differential gear axial reposition of redundant personnel cold extrusion forming device.
Background
The cold extrusion forming of the differential gear generally adopts a forward extrusion method, the softened and annealed cylindrical blank is placed into a cavity of a female die, the flat-bottom male die is used for extruding the blank downwards, a metal material flows downwards under the action of extrusion force, and the cavity of the female die is gradually filled, so that the automobile differential gear is formed.
The cold extrusion method for the gear of the differential needs to ensure that the shape and the size precision of the formed extrusion piece can be directly used or can be used for assembling corresponding parts only by a small amount of machining, so that the cold extrusion forming precision of the gear is one of key technologies concerned by manufacturers of large gears.
At present, in the cold extrusion forming process of a differential gear, along with the flowing filling of blank metal, an idle space in a die cavity is gradually reduced, and under the action of a sharply increased compressive stress, the tooth surface of an extrusion part generates a dimensional error which is enough to influence the surface precision of the extrusion part along with the elastic deformation of the die cavity; when the die is unloaded after completion of extrusion, the gear extrusion member rebounds due to residual stress, and the accuracy of the surface of the tooth surface is also greatly affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cold extrusion forming device of differential mechanism gear axial reposition of redundant personnel, simple structure not only, the bevel gear cold extrusion of being convenient for takes shape, and sets up milling cutter at the die reposition of redundant personnel intracavity, clears away corresponding reposition of redundant personnel surplus, reduces the influence of reposition of redundant personnel surplus to gear extrusion forming precision.
In order to realize the above-mentioned purpose, the utility model provides a cold extrusion device is shunted to differential mechanism gear axial, this cold extrusion device is shunted to differential mechanism gear axial includes terrace die, base, die, milling cutter, bearing, the base is formed with the circular port that can place blank, the die is a terminal surface concave yield and forms the cylindricality with the bevel gear same profile face of treating processing, the die has the outside in bevel gear profile face terminal surface orientation hole, and another terminal surface is provided with the reposition of redundant personnel chamber that switches on with the work piece curved surface that takes shape, it is provided with to reposition of redundant personnel the intracavity milling cutter, the milling cutter pivot is passed through the bearing with die coaxial coupling.
Preferably, the female die is mounted in the circular hole of the base, and the assembly coaxiality of the axis of the female die and the axis of the circular hole of the base is less than 0.03 mm.
Preferably, the diversion cavity is circumferentially provided with a diversion trench, and an included angle formed by the diversion trench and the axis of the female die is 30-45 degrees.
Preferably, the milling cutter face is provided with a chip-receiving flute.
Use the above technical scheme of the utility model a differential mechanism gear axial reposition of redundant personnel cold extrusion forming device has following effect:
Because the extrusion bevel gear is difficult to fill in metal at the tip of the small-end tooth, the diffluence cavity communicated with the forming curved surface of the workpiece is arranged in the differential gear axial diffluence cold extrusion forming device, the fluidity of the metal is improved, the diffluence cavity is internally provided with the milling cutter, the diffluence allowance is reduced, the structure is simple, and the processing precision of the extrusion piece can be improved to a large extent.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
Fig. 1 is a cross-sectional view of a differential gear axial-split cold extrusion molding apparatus according to an embodiment of the present invention.
Description of the reference numerals
1 is a male die, 2 is a blank, 3 is a base, 4 is a female die, 5 is a milling cutter, 6 is a bearing and 7 is a shunting cavity.
Detailed Description
The following describes the embodiments of the present invention in detail. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "inner" and "outer" generally refers to the relative positions in the attached fig. 1, for example, and such relative positions are not intended to limit the present invention.
The method aims to solve the problems that metal at the small-end tooth top of an extrusion bevel gear is difficult to fill, the axial flow of the metal is blocked by a shunting allowance, the machining precision is affected and the like in the extrusion bevel gear pointed out by the background technology. As shown in fig. 1, the differential gear axial shunting cold extrusion forming device comprises a male die 1, a base 3, a female die 4, a milling cutter 5 and a bearing 6, wherein a circular hole capable of placing a blank 2 is formed in the base 3, the female die 4 is cylindrical, one end face of the cylindrical female die is recessed to form a profile surface which is the same as that of a bevel gear to be processed, one end face of the profile surface of the bevel gear faces the outer side of the hole, the other end face of the profile surface of the bevel gear faces a shunting cavity 7 communicated with a workpiece forming curved surface, the milling cutter 5 is arranged in the shunting cavity 7, and a rotating shaft of the milling cutter 5 is coaxially connected with the female die 4 through the.
The utility model discloses in, die 4 install extremely in the 3 circular holes of base, die 4 axis with the assembly axiality of the 3 circular hole axes of base is below 0.03mm, under the more preferred condition, in order to keep higher accuracy, die 4 is the mesopore cylinder, its die 4 external diameter with 3 circular hole apertures of base are the same.
The utility model discloses in, 7 circumference of reposition of redundant personnel chamber are formed with and have the guiding gutter, the guiding gutter with the contained angle that 4 axes of die formed is 30-45, and for better water conservancy diversion effect to the metal fluid, the guiding gutter design is for wide upper portion narrow horn form opening down, and the number has 4 at least, the guiding gutter with the contained angle that 4 axes of die formed is 40-45.
In the present invention, the milling cutter 5 is provided with a groove for receiving chips.
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention, and can be right to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
it should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (4)
1. The utility model provides a cold extrusion device of differential gear axial reposition of redundant personnel, its characterized in that, cold extrusion device of differential gear axial reposition of redundant personnel includes terrace die (1), base (3), die (4), milling cutter (5), bearing (6), base (3) are formed with the circular port that can place blank (2), die (4) are a terminal surface concave yield and form the cylindrical with the profile face that the bevel gear of treating processing is the same, die (4) have a bevel gear profile face terminal surface towards the outside in hole, and another terminal surface is provided with reposition of redundant personnel chamber (7) that switch on with work piece shaping curved surface, be provided with in reposition of redundant personnel chamber (7) milling cutter (5), milling cutter (5) pivot is passed through bearing (6) with die (4) coaxial coupling.
2. A differential gear axial flow-dividing cold extrusion forming device according to claim 1, characterized in that said female die (4) is mounted into said circular hole of said base (3), and the coaxiality of the assembly of the axis of said female die (4) and the axis of said circular hole of said base (3) is 0.03mm or less.
3. A differential gear axial flow dividing cold extrusion forming device according to claim 1, characterized in that the flow dividing cavity (7) is circumferentially formed with flow guide grooves, and the included angle formed by the flow guide grooves and the axis of the female die (4) is 30-45 degrees.
4. A differential gear axial flow splitting cold extrusion device according to claim 1, wherein said milling cutter (5) faces are provided with chip receiving grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109647.4U CN209753678U (en) | 2018-12-14 | 2018-12-14 | Differential gear axial shunting cold extrusion forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822109647.4U CN209753678U (en) | 2018-12-14 | 2018-12-14 | Differential gear axial shunting cold extrusion forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209753678U true CN209753678U (en) | 2019-12-10 |
Family
ID=68746625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822109647.4U Expired - Fee Related CN209753678U (en) | 2018-12-14 | 2018-12-14 | Differential gear axial shunting cold extrusion forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209753678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550802A (en) * | 2018-12-14 | 2019-04-02 | 江西福格新能源传动技术有限公司 | A kind of differential gear axial direction shunting cold-extrusion shaping apparatus and method |
-
2018
- 2018-12-14 CN CN201822109647.4U patent/CN209753678U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550802A (en) * | 2018-12-14 | 2019-04-02 | 江西福格新能源传动技术有限公司 | A kind of differential gear axial direction shunting cold-extrusion shaping apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20201214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |