CN103982630B - A kind of flange arrangement and continuously Forging Technology - Google Patents
A kind of flange arrangement and continuously Forging Technology Download PDFInfo
- Publication number
- CN103982630B CN103982630B CN201410216977.7A CN201410216977A CN103982630B CN 103982630 B CN103982630 B CN 103982630B CN 201410216977 A CN201410216977 A CN 201410216977A CN 103982630 B CN103982630 B CN 103982630B
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- China
- Prior art keywords
- bearing hole
- shell
- housing
- bearing
- forging
- 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
Links
- 238000005242 forging Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000007822 coupling agent Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 claims description 2
- 239000010705 motor oil Substances 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 238000009721 upset forging Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/26—Making machine elements housings or supporting parts, e.g. axle housings, engine mountings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to a kind of flange arrangement, the shell construction that this flange arrangement is arranged in a transmission device is formed with its one, described shell construction comprises left shell and right shell body, described flange arrangement comprises the flange arrangement that two form bearing hole on left shell, and two flange arrangements forming bearing hole on right shell body.Because flange arrangement of the present invention have employed stepped part and incomplete form, facilitate the reasonable Arrangement of bearing hole.Meanwhile, present invention also offers the continuous Forging Technology of this flange arrangement of processing.
Description
Technical Field
The invention relates to the field of flanges, and particularly provides a flange structure for a transmission device shell.
Background
In the field of gear transmission, a conventional transmission structure adopts a multi-stage transmission structure, such as the structure disclosed in patent document 1: as described in DE4227702a 1. As shown in fig. 1, in patent document 1, the reduction gear has one outer case 2, and the outer case 2 is formed in a bell shape to accommodate most of the transmission structure inside. Between the housing wall on the output side and the partition, a chamber on the output side is formed, which comprises an output shaft 8 with an output gear and a bearing flange 3 with fastening elements for the fastening action. The driven shaft 8 supports a driven gear 16 between two driven shaft bearings 6, 13 in a chamber on the driven side of the housing. The bearing 42 is arranged in the bearing hole 34 of the bearing flange 3; the shaft 43 is supported by the bearing flange 3 via the bearing 42, the shaft 43 is parallel to the intermediate shaft 24, and the power of the shaft 43 is transmitted to the intermediate shaft 24 by gear transmission.
However, the speed reducer structure has the problems of complex structure, loose installation structure and complex manufacturing process due to the adoption of a multi-stage transmission mode, and particularly under the condition that a combined shell exists, the processing of a bearing hole is often complex.
Disclosure of Invention
The present invention is directed to a flange structure, which is applied to the above-mentioned transmission structure to overcome the problems of the prior art, and has the advantages of compact structure and installation friendliness.
In order to achieve the purpose, the flange structure provided by the invention has good bearing performance, so that a shell structure adopting the flange structure has good installation performance. And then can make transmission structure adopt compact axle mounting means, arrange more bearing fulcrum on the transmission shaft, simultaneously, avoid the static unstable problem that above-mentioned bearing fulcrum probably exists when a plurality of through the bearing structure who sets up the bearing flange.
Drawings
For a more detailed description of the invention, reference should be made to the accompanying drawings in which:
fig. 1 is a schematic diagram of a transmission device shown in patent document 1.
Fig. 2 is a schematic view of a right housing having a flange structure according to the present invention.
Fig. 3 is a schematic view of a left housing with a flange structure according to the present invention.
(Note: the structures shown in the figures are meant to be illustrative of features of the invention and are not meant to be dependent upon the structures shown in the figures.)
Detailed Description
As shown in fig. 1 and 2, a flange structure according to the invention is arranged on and formed integrally with a housing structure of a transmission, which comprises the housing structure and a transmission assembly located inside the housing structure, the housing structure forming a chamber which receives a transmission shaft with a transmission gear and an associated bearing, i.e. a bearing in a bearing bore. Thus, the drive shaft, gear and rolling bearing may be mounted as a pre-assembled unit.
The part of the chamber that receives the drive shaft is surrounded by a wall 5 that is oriented substantially axially parallel, which wall 5 extends cylindrically over 180 ° at least in the region of the bearing bore 6. The wall 5 is connected to the footing, partly by means of ribs and partly by means of the transverse wall 4.
As the transmission path, for example, an input pinion acts on an intermediate gear supported by an intermediate shaft. The intermediate shaft supports an intermediate pinion on its other end, which meshes with the driven gear. The output-side chamber 5 has, for receiving the intermediate shaft, a lateral bulge 11 which is surrounded by a wall 12 running essentially axially in parallel and which is bounded on the output side by the wall 9. The cylindrical inner surface of the projection 11, which extends over 180 ° in the circumferential direction, forms the bearing bore for the two rolling bearings of the intermediate shaft. In both rolling bearings, the rolling bearings are arranged on the driven-side end of the intermediate shaft of the chamber bulge 11, and the rolling bearings are arranged approximately at the center of the shaft and on the drive-side end of the chamber bulge 11. This makes it possible to support the intermediate shaft directly on both sides of the intermediate pinion which is subjected to high loads. The bending moments experienced by the intermediate shaft are thereby limited and advantageous dimensioning can be achieved.
It follows that the housing structure designed to achieve the above structure needs to be of a compliant size. The left shell is provided with a plurality of positioning holes for positioning, the positioning holes for positioning are uniformly distributed along the edge of the shell, the bottom of the left shell comprises two base parts 8 perpendicular to the cross section of the left shell, and the base parts 8 are block-shaped supporting structures. The base 8 is integrally formed with the left housing. Two bearing bores are formed in the left housing, wherein the bearing bore 6 is formed by a wall 5, which wall 5 is embodied as an incomplete flange structure. As shown in FIG. 3, the incomplete flange configuration has a plurality of steps, with the higher step occupying a majority of the circumferential dimension, such as 3/5-4/5, and the lower step occupying a smaller circumferential dimension, such as 1/5-2/5. The lower step part is provided with two positions, and the two lower step parts are respectively arranged at the left side and the right side of the higher step part. A notch portion is formed between the two lower step portions, and the position of the notch portion corresponds to the other bearing hole 10. The bearing bore 10 is formed by a wall 12, which wall 12 is designed as a complete flange structure. As a whole, the bearing hole 6 is located at the middle upper portion of the left housing, and the bearing hole 10 is located at the middle lower portion of the left housing. The bearing hole 6 is adjacent to but does not interfere with the bearing hole 10.
Referring to fig. 2, there are several positioning holes for positioning on the right housing, which are also uniformly distributed along the edge of the housing and correspond to the positioning holes on the left housing one to one. The bottom of the right housing does not then comprise two bases running perpendicular to the cross-section of the right housing, but for mounting reasons the bottom shape of the right housing or even the entire shape needs to correspond to the left housing. In addition to this, two bearing holes are also formed in the right housing, which correspond to the bearing holes 6, 10 in the left housing. Wherein the bearing bore 2 is formed by a wall which is embodied as an incomplete flange structure. As shown in fig. 2, the incomplete flange configuration is an incomplete configuration in which the higher wall occupies a majority of the circumferential dimension, such as the circumferential dimension of 3/5-4/5, and the cutout without a wall occupies a smaller circumferential dimension, such as the circumferential dimension of 1/5-2/5. The position of the notch corresponds to the other bearing hole 3. The bearing bore 3 is likewise formed by a wall, which is designed as a complete flange structure. As a whole, the bearing hole 2 is located at a position of the middle upper portion of the right housing, and the bearing hole 3 is located at a position of the middle lower portion of the right housing. The bearing hole 2 is adjacent to but does not interfere with the bearing hole 3.
It follows that in a gearbox housing construction with installation friendliness, the above-mentioned friendly installation needs to be achieved by means of a reasonable flange arrangement. In this configuration, both the intermediate shaft and the output shaft can also be preassembled with the associated gear and bearing and inserted into the housing as a finished unit.
For the processing of the flange structure of the present invention, on the premise of ensuring the strength and the service performance, a special processing method needs to be adopted based on the consideration of the weight reduction by those skilled in the art. Production practices show that when the combined turning or milling mode is adopted for processing, the deformation of the bottom surface and the side wall is large, and the side wall is easy to generate vibration lines. Particularly, during mass production, the phenomena of difficult positioning, clamping and alignment, clamping deformation, vibration lines and the like frequently occur during reverse side processing, so that the problems of high rejection rate, low production rate, high production cost and the like are caused. Therefore, the invention adopts a new process of continuous forging combined with post-forging reforming for processing.
The processing flow comprises the following steps:
the method comprises the following steps: blank making by integral press
In order to satisfy the first upsetting forging ratio and facilitate crushing of large-grained carbides in the material structure, the length dimension of the blank is preferably determined according to the following formula:
2d < L < 3d (round blank)
2A < L < 3A (square blank)
In the formula, L is the length of a blank; d is the diameter of the round blank; and A is the side length of the square blank.
Step two: cooling down
Step three: forging and forming
The material is fed in a square-flat-square way and is upset and drawn for more than 3 times along the fiber direction. Along the fiber direction (axial direction) of the original blank, ensuring that the forging ratio is more than 2, and quickly and continuously upsetting and drawing for more than 3 times in one fire; wherein the initial forging temperature is 1000 ℃, and the final forging temperature is 850 ℃.
Step four: rough turning before heat treatment
Step five: primary ultrasonic testing
After the ring forging is roughly turned, the ring forging is placed on a detection platform, an engine oil coupling agent is coated on the surface of the ring forging, ultrasonic detection is carried out, and whether internal cracks or defects with other properties exist or not is detected according to a single straight probe contact method
Step six: thermal treatment
Comprises the steps of quenching and tempering. Heating the roughly turned forge piece to 960-990 ℃ in a heat treatment furnace, quenching, and cooling to room temperature by water; tempering at 700 +5 deg.c and air cooling.
Step seven: finish turning after heat treatment
Step eight: and finally carrying out ultrasonic detection.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (4)
1. A flange structure arranged on and integral with a housing structure of a transmission, the transmission comprising the housing structure and a transmission assembly located inside the housing structure, characterized in that:
the shell structure comprises a left shell and a right shell; wherein,
the flange structure comprises two flange structures which form a bearing hole on the left shell and two flange structures which form a bearing hole on the right shell; wherein,
the left shell is provided with a plurality of positioning holes for positioning, the positioning holes for positioning are uniformly distributed along the edge of the left shell, the bottom of the left shell comprises two base parts perpendicular to the cross section of the left shell, and the base parts are block-shaped supporting structures;
and, the base is integrally formed with the left housing; two bearing holes are formed in the left housing, wherein a first bearing hole is formed by a wall body which is constructed as an incomplete flange structure; and, the incomplete flange structure has a plurality of steps, wherein a higher step occupies most of the circumferential dimension and a lower step occupies a smaller circumferential dimension; the lower step part is provided with two positions which are respectively arranged at the left side and the right side of the higher step part;
a notch part is arranged between the two lower step parts, the position of the notch part corresponds to that of a second bearing hole, the second bearing hole is formed by a wall body, and the wall body is of a complete flange structure;
wherein, on the whole, the first bearing hole is positioned at the middle upper part of the left shell, and the second bearing hole is positioned at the middle lower part of the left shell;
the first bearing hole is adjacent to but does not interfere with the second bearing hole;
the right shell is provided with a plurality of positioning holes for positioning, and the positioning holes for positioning are uniformly distributed along the edge of the right shell and correspond to the positioning holes in the left shell one by one;
the bottom of the right shell does not comprise two bases perpendicular to the cross section of the right shell, but the outline shape of the right shell corresponds to that of the left shell for installation reasons;
two bearing holes are also formed in the right shell and correspond to the first bearing hole and the second bearing hole in the left shell;
wherein the third of the two bearing holes on the right housing is formed by a wall which is constructed as an incomplete flange structure, wherein the higher wall occupies the majority of the circumferential dimension and the cutout without a wall occupies the smaller circumferential dimension; the position of the notch part corresponds to a fourth bearing hole in the two bearing holes on the right shell, and the fourth bearing hole is also formed by a wall body which is constructed into a complete flange structure;
and, on the whole, the third bearing hole is located in the position of the middle upper portion of the right housing, the fourth bearing hole is located in the position of the middle lower portion of the right housing;
the third bearing hole is adjacent to but does not interfere with the fourth bearing hole.
2. The flange structure according to claim 1, wherein:
the higher step on the left shell occupies most of the circumferential dimension which is 3/5-4/5, and the lower step occupies less of the circumferential dimension which is 1/5-2/5.
3. The flange structure according to claim 1, wherein:
the higher wall on the right housing occupies most of the circumferential dimension which is 3/5-4/5, and the cutout without a wall occupies a lesser circumferential dimension which is 1/5-2/5.
4. A continuous forging process for working a flange structure according to claim 1, characterized by comprising the steps of:
the method comprises the following steps: pressing the blank by an integral press;
to meet the first upset forging ratio, the slug length dimension is determined as follows:
l is more than 2d and less than 3d (round blank);
l is more than 2A and less than 3A (square blank);
in the formula, L is the length of a blank; d is the diameter of the round blank; a is the side length of the square blank;
step two: cooling;
step three: forging and forming;
adopting 'square-flat-square' feeding, upsetting and drawing for more than 3 times along the fiber direction, ensuring that the forging ratio is more than 2 along the fiber direction axial direction of an original blank, and quickly and continuously upsetting and drawing for more than 3 times in one fire; wherein the initial forging temperature is 1000 ℃, and the terminal temperature is 850 ℃;
step four: rough turning before heat treatment
Step five: primary ultrasonic detection;
after the ring forging is roughly turned, the ring forging is placed on a detection platform, an engine oil coupling agent is coated on the surface of the ring forging, ultrasonic detection is carried out, and whether internal cracks or defects with other properties exist is detected according to a single straight probe contact method;
step six: heat treatment;
the method comprises the steps of quenching and tempering, wherein the roughly turned forging is heated to 960-990 ℃ in a heat treatment furnace for quenching, and water cooling is carried out to room temperature; tempering at 700 +5 ℃, and air cooling;
step seven: finely turning after heat treatment;
step eight: and finally carrying out ultrasonic detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216977.7A CN103982630B (en) | 2014-05-22 | 2014-05-22 | A kind of flange arrangement and continuously Forging Technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216977.7A CN103982630B (en) | 2014-05-22 | 2014-05-22 | A kind of flange arrangement and continuously Forging Technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982630A CN103982630A (en) | 2014-08-13 |
| CN103982630B true CN103982630B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410216977.7A Expired - Fee Related CN103982630B (en) | 2014-05-22 | 2014-05-22 | A kind of flange arrangement and continuously Forging Technology |
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| Country | Link |
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| CN (1) | CN103982630B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276147B (en) * | 2015-10-29 | 2019-04-05 | 北京新能源汽车股份有限公司 | Intermediate connection device and power assembly device with same |
| CN107097047A (en) * | 2017-05-17 | 2017-08-29 | 江苏昊鹏机械有限公司 | The processing method of automobile hub bearing high rigidity inner ring flange |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005056988A1 (en) * | 2005-11-30 | 2007-05-31 | Zf Friedrichshafen Ag | Gear system for motor vehicles, has gear case and idler gear shaft and idler gear whereby free end, realizing further support, can be fixed on side wall of gear case |
| CN202251848U (en) * | 2011-09-08 | 2012-05-30 | 江阴克威齿轮箱制造有限公司 | Speed reducer with high transmission efficiency |
| CN103574000A (en) * | 2013-11-08 | 2014-02-12 | 无锡威孚精密机械制造有限责任公司 | Shell structure of hub reduction gear |
| CN204083150U (en) * | 2014-05-22 | 2015-01-07 | 顾玉华 | A kind of flange arrangement |
-
2014
- 2014-05-22 CN CN201410216977.7A patent/CN103982630B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005056988A1 (en) * | 2005-11-30 | 2007-05-31 | Zf Friedrichshafen Ag | Gear system for motor vehicles, has gear case and idler gear shaft and idler gear whereby free end, realizing further support, can be fixed on side wall of gear case |
| CN202251848U (en) * | 2011-09-08 | 2012-05-30 | 江阴克威齿轮箱制造有限公司 | Speed reducer with high transmission efficiency |
| CN103574000A (en) * | 2013-11-08 | 2014-02-12 | 无锡威孚精密机械制造有限责任公司 | Shell structure of hub reduction gear |
| CN204083150U (en) * | 2014-05-22 | 2015-01-07 | 顾玉华 | A kind of flange arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982630A (en) | 2014-08-13 |
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