CN104278278A - Embedded rack for bevel gear carburization and quenching - Google Patents
Embedded rack for bevel gear carburization and quenching Download PDFInfo
- Publication number
- CN104278278A CN104278278A CN201410551851.5A CN201410551851A CN104278278A CN 104278278 A CN104278278 A CN 104278278A CN 201410551851 A CN201410551851 A CN 201410551851A CN 104278278 A CN104278278 A CN 104278278A
- Authority
- CN
- China
- Prior art keywords
- hole
- workpiece
- bin
- quenching
- embedded
- 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Articles (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses an embedded rack for bevel gear carburization and quenching, which is a honeycomb rectangular rack composed of posts, through holes, ribbed plates and a frame, wherein the posts are erected on the rack; the posts, which are respectively arranged at four corners and the middle part, have the same height; the clear height of each post is greater than the vertical height of a workpiece; the through holes are polygonal holes; the through holes, which are uniformly distributed in the rack, are vertically and horizontally connected through the ribbed plates; and the upper edge place of each through hole is uniformly distributed with 3 salient point supporting workpieces with the same height. The workpiece A section is embedded in the through hole, and a clearance is kept at the junction plane through the salient point; and the clearance can ensure the carburizing and quenching medium to flow to here. The small clearance can reduce the flow rate of the quenching liquid, thereby performing the heat storage function, avoiding the metal from creeping at high temperature, lowering the quenching cooling rate, and further reducing the thermal deformation of the splined hole in the workpiece A section. The rack is used for production, has the advantages of stable quality and high work efficiency, and is especially suitable for mass production.
Description
Technical field
The present invention relates to a kind of metal heat treatmet utensil, specifically, the present invention relates to a kind of embedded bin for cone gear carburizing and quenching.
Background technology
Master driver in automobile differential is cone gear.The built-in splined hole of this cone gear, cone tooth is located at large end one side outwardly, and small end is location and installation end.The cone gear two ends outside diameter difference of this kind of ledge structure is comparatively large, and under hole size same case, the wall thickness of location and installation end is relatively thin, under same carburizing and quenching condition, although this place more easily realizes quenching, the heat distortion amount also corresponding increasing of association, must affect the distortion of built-in splined hole.Automobile differential bevel gear removes when carburizing and quenching and high temperature creep occurs, also has expand with heat and contract with cold deformation and the uneven metaplasia caused of phase transformation that cause during quenching, particularly prior art adopts the heating of screen frame collection dress, more easily there is high temperature creep in heat-processed in the workpiece of this kind of unordered storing, adds the asynchronous metaplasia caused of the large cooling of thickness great disparity.Bevel gear internal splined M value permissible error only 0.05mm in the industry in Designing Passenger Car Differentials, prior art is under above-mentioned normal heat distortion and irregular shape deformation effect, product is difficult to reach prospective quality, causes conforming product rate low, and the situation of production efficiency difference can not get solving for a long time.
Summary of the invention
The problem that the present invention easily causes internal splined hole to be out of shape mainly for prior art, propose a kind of embedded bin being specifically designed to cone gear carburizing and quenching, this material frame structure is simple, the orderly horizontal of workpiece, homogeneous carburizing, homogeneous heating quenching can be accomplished, reduce internal splined hole distortion.
The present invention is achieved through the following technical solutions technical object.
For the embedded bin of cone gear carburizing and quenching, it forms cellular rectangle by stanchion, through hole, floor and frame.Described frame and floor are plate, and the frame being positioned at four limits is respectively equipped with indent half slot.Its improvements are: described stanchion is that Pagoda-shaped stands on, and divide the stanchion being located at corner and middle part contour, stanchion free height is higher than the perpendicular degree of setting high of workpiece.Described through hole is polygonal hole, be distributed on through hole on bin in length and breadth between be linked into one by floor, the supporting surface of every uniform contour salient point composition workpiece of through hole upper edge plane.
As further improvement project, put more perpendicular than workpiece of described stanchion free height lays highly high 10mm ~ 15mm.
As further improvement project, described through hole is positive 6 ~ 8 shape holes, limit, and workpiece inserts in positive 6 ~ 8 shape holes, limit with minimum diameter section, positive 6 ~ 8 limit shape inscribed circle 2mm ~ 3mm larger than workpiece minimum diameter section.
As further improvement project, plane uniform 3 salient points in through hole upper edge are circular arc, salient point height 1.5mm ~ 2.0mm.
As further improvement project, bin is high temperature steel foundry goods.
The present invention compared with prior art, has following positively effect:
1, cellular rectangle bin, workpiece positioning structure is simple, and location is reliable, and permeability meets carburizing quenching process requirement;
2, the orderly horizontal of workpiece is in groups on bin, does not lean on mutually mutually, under same environment, completes carburizing and quenching, be conducive to accomplishing to homogenize between adjacent workpieces;
3, uniform stanchion on rectangle bin, is convenient to laminated multi-layer, is conducive to enhancing productivity;
4, workpiece A section is minimum diameter section, and wall thickness is the thinnest herein, and workpiece A section is in the through hole of bin, can avoid the load-bearing when carburizing is heated of this thin-walled, reduces the external condition impact of internal splined hole thermal distortion;
5, the through hole upper edge plane on bin is provided with 3 semicircle salient points, because semicircle salient point is separated by, guarantee to circulate between workpiece and bin supporting surface carburizing atmosphere, small―gap suture and Polygons post holes can slow down hardening liquid velocity of flow herein, play accumulation of heat effect, avoid workpiece A place thin-walled comparatively fast to cool, directly reduce the distortion during internal splined hole cooling of workpiece minimum diameter section.
Accompanying drawing explanation
Fig. 1 is two dimensional structure schematic diagram of the present invention.
Fig. 2 is Figure 1B-B diagrammatic cross-section.
Fig. 3 stacks the example structure schematic diagram of 10 layers.
Fig. 4 is workpiece (cone gear) structural representation of embodiment for carburizing and quenching.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Be a kind of embedded bin for cone gear carburizing and quenching shown in Fig. 1, it forms cellular rectangle bin by stanchion 1, through hole 2, floor 3 and frame 4.Described frame 4 and floor 3 are plate, and the frame 4 being positioned at four limits is respectively equipped with indent half slot 4.1, and external indent half slot 4.1 plays booster action, are also convenient to centering when levels bin is stacked on the other hand.In order to accomplish equidistantly to be separated by, the uniform contour Pagoda-shaped stanchion 1 in corner and middle part of bin one side upward, stanchion 1 free height is more perpendicular than workpiece to be put and lays highly higher, leaves the circulation that carburizing and quenchant are convenient in certain space.The present embodiment is used for the cone gear carburizing and quenching in Designing Passenger Car Differentials, and workpiece is wherein perpendicular puts that to lay be highly 34mm, and stanchion 1 free height is 48mm, both difference of altitude 14mm.Described through hole 2 is regular hexagon hole, and workpiece inserts in regular hexagon hole with the A section shown in Fig. 4, regular hexagon inscribed circle 2mm larger than the A section external diameter of workpiece.Workpiece A section is minimum diameter section, and wall thickness is the thinnest herein, and workpiece A section is inserted in the through hole 2 of bin, avoids this place's thin-walled load-bearing when carburizing is heated, can reduce internal splined hole high temperature creep.Entering the carburizing and quenching stage also can reduce to cause A place to be out of shape because inhomogeneous cooling is even.The present embodiment laterally equidistantly establishes 5 through holes 2, longitudinally equidistantly establishes 6 through holes 2, be distributed on through hole 2 on bin in length and breadth between be linked into one by floor 3.When workpiece inserts through hole 2 with A section, affect gear wheel carburization and quenching for avoiding work mounting s face to contact with through hole 2 upper surface, therefore at uniform 3 salient points 2.1 of every through hole 2 upper edge plane, because of 3 some self-assembling formations face, be conducive to workpiece and steadily support.Salient point 2.1 in the present embodiment is circular arc, and it is highly 1.5mm, because circular arc salient point is separated by, guarantees to circulate between workpiece and bin supporting surface carburizing atmosphere or quenchant.Because small―gap suture can slow down hardening liquid velocity of flow herein, play accumulation of heat effect, reduce quench cooling rate, directly can reduce the thermal distortion of workpiece minimum diameter section internal splined hole, the internal splined hole of workpiece A section in the present embodiment, thermal distortion M value after carburizing and quenching only between 0.02 ~ 0.03mm, much smaller than M value design tolerance 0.05mm.
The present embodiment as shown in Figure 1 one deck can lay 30 workpiece, and its total amount reaches 30kg, therefore has certain intensity and rigid requirements to bin.Bin shown in Fig. 1 adopts cast form, and material used is high temperature steel, and be similar to cellular rectangle bin and can accomplish to lay workpiece in order, do not lean on mutually mutually between adjacent workpieces, each workpiece completes carburizing and quenching under same environment, is conducive to accomplishing to homogenize.The present invention can be used alone, and also can be stacked use according to the size of burner hearth polylith of process furnace, and Fig. 3 is 10 layers of structural representation be stacked.Multilayer is stacked accomplishes integrated operation, can significantly improve production efficiency.
Claims (5)
1., for an embedded bin for cone gear carburizing and quenching, it forms cellular rectangle bin by stanchion (1), through hole (2), floor (3) and frame (4); Described frame (4) and floor (3) are plate, and the frame (4) being positioned at four limits is respectively equipped with indent half slot (4.1); It is characterized in that: described stanchion (1) stands on bin in Pagoda-shaped, divide the stanchion (1) being located at corner and middle part contour, stanchion (1) free height is higher than the perpendicular degree of setting high of workpiece; Described through hole (2) is polygonal hole, be distributed on through hole (2) on bin in length and breadth between be linked into one by floor (3), the supporting surface of every through hole (2) upper edge plane uniform contour salient point (2.1) composition workpiece.
2. the embedded bin for cone gear carburizing and quenching according to claim 1, is characterized in that: put more perpendicular than workpiece of described stanchion (1) free height lays highly high 10mm ~ 15mm.
3. the embedded bin for cone gear carburizing and quenching according to claim 1, it is characterized in that: described through hole (2) is positive 6 ~ 8 shape holes, limit, workpiece inserts in positive 6 ~ 8 shape holes, limit with (A) section, positive 6 ~ 8 limit shape inscribed circles 2mm ~ 3mm larger than (A) section external diameter of workpiece.
4. the embedded bin for cone gear carburizing and quenching according to claim 1, is characterized in that: plane uniform 3 salient points (2.1) in described through hole (2) upper edge are semicircle, salient point (2.1) high 1.5mm ~ 2.0mm.
5. the embedded bin of cone gear carburizing and quenching according to claim 1, is characterized in that: bin is high temperature steel foundry goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551851.5A CN104278278A (en) | 2014-10-17 | 2014-10-17 | Embedded rack for bevel gear carburization and quenching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551851.5A CN104278278A (en) | 2014-10-17 | 2014-10-17 | Embedded rack for bevel gear carburization and quenching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104278278A true CN104278278A (en) | 2015-01-14 |
Family
ID=52253610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410551851.5A Pending CN104278278A (en) | 2014-10-17 | 2014-10-17 | Embedded rack for bevel gear carburization and quenching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104278278A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611539A (en) * | 2015-01-31 | 2015-05-13 | 合肥美桥汽车传动及底盘系统有限公司 | Reverse deformation method for gear heat treatment |
| CN105316621A (en) * | 2015-11-19 | 2016-02-10 | 天津天海同步科技有限公司 | Carburization combined assembly structure for planet row transmission gears and heat treatment method |
| CN106399915A (en) * | 2016-12-14 | 2017-02-15 | 天津天海同步科技有限公司 | Carburization combined tool and heat treatment method of synchronizer combined gears |
| CN106643180A (en) * | 2016-12-29 | 2017-05-10 | 昆山索科特表面科技有限公司 | Bevel gear type, tower periphery type and groove type hole plate for metal surface treatment and bearing frame |
-
2014
- 2014-10-17 CN CN201410551851.5A patent/CN104278278A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611539A (en) * | 2015-01-31 | 2015-05-13 | 合肥美桥汽车传动及底盘系统有限公司 | Reverse deformation method for gear heat treatment |
| CN105316621A (en) * | 2015-11-19 | 2016-02-10 | 天津天海同步科技有限公司 | Carburization combined assembly structure for planet row transmission gears and heat treatment method |
| CN105316621B (en) * | 2015-11-19 | 2018-02-23 | 天津天海同步科技有限公司 | Total assembling structure and heat treatment method are combined in the carburizing of planet row travelling gear |
| CN106399915A (en) * | 2016-12-14 | 2017-02-15 | 天津天海同步科技有限公司 | Carburization combined tool and heat treatment method of synchronizer combined gears |
| CN106643180A (en) * | 2016-12-29 | 2017-05-10 | 昆山索科特表面科技有限公司 | Bevel gear type, tower periphery type and groove type hole plate for metal surface treatment and bearing frame |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104278278A (en) | Embedded rack for bevel gear carburization and quenching | |
| CN104152666B (en) | A kind of car type furnace produces the Technology for Heating Processing of high-quality mould steel | |
| CN204185518U (en) | The carburizing and quenching bin of built-in current limliting accumulation of heat structure | |
| CN204080026U (en) | A kind of heat treatment tooling for small dimension module | |
| CN201924061U (en) | Spray pipe of annealing furnace | |
| CN204779701U (en) | Device is hung to cluster and work or material rest thereof | |
| CN202293361U (en) | Forming die for composite-material door of airplane | |
| CN204151374U (en) | A kind of meshbeltfurnace quenching device reducing workpiece deformation cracking | |
| JP2011226690A (en) | Integral multilayer type firing and mounting device | |
| CN202688372U (en) | High-temperature heating furnace material pillow | |
| CN105149581A (en) | Method for preventing strain cracking of ES magnetic core during sintering | |
| JP3160629U (en) | Integrated multi-layer firing placement device | |
| CN105441659A (en) | Anti-deformation thermal treatment tool for high-temperature alloy precisely-forged structural component | |
| CN203474838U (en) | Special lifting arrangement structure for feeding and discharging of aluminum strip annealing material coil in high rack warehouse | |
| CN203419954U (en) | Vertical quenching furnace | |
| KR101950682B1 (en) | Transporting Cart For Heat Treatment Furnace | |
| CN206347878U (en) | Batch-type furnace drop-bottom | |
| CN212419641U (en) | Tempering bearing device for neodymium iron boron sintered blank | |
| CN215050561U (en) | Toothed plate heat treatment tool | |
| US20110241273A1 (en) | One-piece multi-layer sintering carrier | |
| CN214148850U (en) | Bottom area difference alumina ceramics high temperature annealing tool | |
| CN103898309A (en) | Layered wheel hub blank heat-treatment material rack | |
| CN209778944U (en) | Workpiece rack for batch heat treatment | |
| CN103981356B (en) | Round heat treatment of workpieces loading frame | |
| CN210104032U (en) | Aluminum coil annealing furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |
|
| WD01 | Invention patent application deemed withdrawn after publication |