CN210367882U - Tool for carburizing and quenching thin-wall inner gear ring - Google Patents
Tool for carburizing and quenching thin-wall inner gear ring Download PDFInfo
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- CN210367882U CN210367882U CN201920883479.6U CN201920883479U CN210367882U CN 210367882 U CN210367882 U CN 210367882U CN 201920883479 U CN201920883479 U CN 201920883479U CN 210367882 U CN210367882 U CN 210367882U
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Abstract
The utility model discloses a frock that is used for thin wall ring gear carburization quenching to process belongs to spare part processing equipment for heat treatment technical field. The utility model discloses a frock for thin wall ring gear carburizing and quenching processing, including a core section of thick bamboo the lower extreme of a core section of thick bamboo is equipped with the annular boss that extends to the outside the upper end of a core section of thick bamboo still is equipped with the hole for hoist. The utility model discloses the frock plays the inside lining effect when interior ring gear carburizing and quenching adds man-hour, prevents that the thin wall ring gear from being heated and producing deformation to reduce the rejection rate of thin wall ring gear, guaranteed the product quality of thin wall ring gear, and the device simple structure, convenient operation, the practicality is strong.
Description
Technical Field
The utility model belongs to the technical field of spare part processing equipment for heat treatment, concretely relates to a frock that is used for thin wall ring gear carburization quenching to process.
Background
The crawling gear ring gear of the wheeled tractor is generally an inner ring gear with a thin wall thickness, and the crawling gear ring gear is generally made of low-carbon alloy steel and needs to be subjected to carburizing and quenching treatment to improve the surface hardness and the wear resistance. However, because the wall thickness of the inner gear ring is thin, the distance from the circumference of the tooth root of the inner gear to the circumference of the outer wall is generally only about 10mm, if a special clamping mode is not adopted during carburizing and quenching of the inner gear ring, the inner gear ring is easy to form ellipse or buckling deformation after carburizing and quenching, and because the inner gear ring after carburizing and quenching has the characteristics of high hardness and thin wall, the correction is usually difficult, so that the rejection rate of the thin-wall inner gear ring is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a frock that is used for thin wall ring gear carburization quenching to process, this frock plays the inside lining effect when interior ring gear carburization quenching adds man-hour, prevents that the thin wall ring gear from being heated and producing deformation to reduce the rejection rate of thin wall ring gear, guaranteed the product quality of thin wall ring gear, and the device simple structure, convenient operation, the practicality is strong.
In order to realize the purpose, the technical scheme of the utility model is to design a frock that is used for thin wall ring gear carburization quenching to process, including a core section of thick bamboo the lower extreme of a core section of thick bamboo is equipped with the annular boss that extends to the outside the upper end of a core section of thick bamboo still is equipped with the hole for hoist.
The device of the utility model is simple in structure, convenient operation, annular boss play the supporting role to the thin wall ring gear of cover outside the core section of thick bamboo, and the core section of thick bamboo plays the inside lining effect to the thin wall ring gear, has effectively avoided the thin wall ring gear to take place deformation when being heated.
In order to further ensure the bunching effect of the device on the thin-wall inner gear ring, the upper end face of the annular boss is further provided with a plurality of countersunk threaded holes which are uniformly arranged on the same circumference concentric with the core barrel at intervals, the annular boss further comprises a fixed ring disc and a plurality of vertical columns, the upper end and the lower end of each vertical column are respectively provided with a threaded outer surface matched with the countersunk threaded holes, the fixed ring disc is further provided with a plurality of vertical through holes, the vertical through holes are uniformly arranged on the same circumference concentric with the fixed ring disc at intervals, the vertical through holes on the fixed ring disc correspond to the countersunk threaded holes on the annular boss, the inner diameter of each vertical through hole is larger than the diameter of the vertical column by 2-5 mm, the inner diameter of the fixed ring disc is larger than the outer diameter of the core barrel by 2-5 mm, and the outer diameter of the fixed ring disc is smaller than or equal to the outer diameter of. The vertical column has a compression effect on the outer wall of the inner gear ring sleeved on the core barrel, and the fixed ring disc and the annular boss have a compression effect on the upper surface and the lower surface of the inner gear ring, so that the upper and lower warping or circumferential deformation of the inner gear ring is avoided, and the deformation prevention effect of the device on carburizing and quenching processing of the inner gear ring is further ensured.
In order to ensure the carburizing and quenching processing quality of the thin-wall annular gear, the further preferable technical scheme is that a plurality of radial through holes are uniformly arranged on the core barrel, and the annular boss between the countersunk threaded hole and the core barrel is of a hollow structure. The structure ensures that the carburizing atmosphere and the quenching liquid can uniformly circulate on the surface of the inner gear ring, and ensures the integral uniformity of the quality of the inner gear ring product.
In order to facilitate the placement of the tool, the preferable technical scheme is that the lower end part of the core cylinder extends to the outside of the annular boss, the tool further comprises a base, a plurality of mounting holes are uniformly arranged on the base at intervals, the inner diameter of each mounting hole is greater than the outer diameter of the core cylinder and smaller than the outer diameter of the annular boss, and the depth of each mounting hole is greater than or equal to the distance from the lower end part of the core cylinder to the outside of the annular boss. The base effectively guarantees the stability of the core barrel, the operators can conveniently load and unload the inner gear ring products, and the working efficiency is guaranteed.
In order to further ensure the compressing effect of the device on the outer wall of the inner gear ring sleeved on the core barrel, the device further preferably adopts the technical scheme that the device further comprises a fixing piece, the cross section of the fixing piece is of an arc structure, an arc clamping groove matched with the vertical column is further arranged at the center of the convex surface side of the fixing piece, and radial through holes are uniformly formed in the fixing piece. One side of the fixing piece is firmly clamped with the vertical column through the arc-shaped clamping groove, and the other side of the fixing piece is firmly clamped with the inner gear ring product, so that the uniformity and the firm safety of the pressing effect of the device on the outer wall of the inner gear ring sleeved on the core barrel are ensured.
In order to ensure the shape-restraining effect of the device on the thin-wall annular gear, the further preferred technical scheme is that the core cylinder, the annular boss, the vertical column, the fixing piece and the base are made of heat-resistant steel. The device is made of heat-resistant steel materials, namely the device is good in shape stability when heated, and therefore the effect of the device on the bundling effect of the thin-wall inner gear ring is guaranteed.
In order to facilitate the smooth manufacturing of the device, the heat-resistant steel is preferably Cr25Ni 20.
The utility model has the advantages and the beneficial effects that:
1. the utility model discloses the frock plays the inside lining effect when interior ring gear carburizing and quenching adds man-hour, prevents that the thin wall ring gear from being heated and producing deformation to reduce the rejection rate of thin wall ring gear, guaranteed the product quality of thin wall ring gear, and the device simple structure, convenient operation, the practicality is strong.
2. The upper end face of the annular boss is further provided with a plurality of countersunk threaded holes, the countersunk threaded holes are uniformly arranged on the same circumference concentric with the core barrel at intervals, the fixing ring disc further comprises a fixing ring disc and a plurality of vertical columns, the upper end and the lower end of each vertical column are respectively provided with a threaded outer surface matched with the countersunk threaded holes, the fixing ring disc is further provided with a plurality of vertical through holes, the vertical through holes are uniformly arranged on the same circumference concentric with the fixing ring disc at intervals, the vertical through holes in the fixing ring disc correspond to the countersunk threaded holes in the annular boss, the inner diameter of each vertical through hole is larger than the diameter of the vertical column by 2-5 mm, the inner diameter of the fixing ring disc is larger than the outer diameter of the core barrel by 2-5 mm, and the outer diameter of the fixing ring disc is smaller than or equal to. The vertical column has a compression effect on the outer wall of the inner gear ring sleeved on the core barrel, and the fixed ring disc and the annular boss have a compression effect on the upper surface and the lower surface of the inner gear ring, so that the upper and lower warping or circumferential deformation of the inner gear ring is avoided, and the deformation prevention effect of the device on carburizing and quenching processing of the inner gear ring is further ensured.
3. The core barrel is also uniformly provided with a plurality of radial through holes, and the annular boss between the countersunk head threaded hole and the core barrel is of a hollow structure. The structure ensures that the carburizing atmosphere and the quenching liquid can uniformly circulate on the surface of the inner gear ring, and ensures the integral uniformity of the quality of the inner gear ring product.
4. The lower end part of the core barrel extends to the outside of the annular boss, the core barrel further comprises a base, a plurality of mounting holes are further uniformly arranged on the base at intervals, the inner diameter of each mounting hole is larger than the outer diameter of the core barrel and smaller than the outer diameter of the annular boss, and the depth of each mounting hole is larger than or equal to the distance from the lower end part of the core barrel to the outside of the annular boss. The base effectively guarantees the stability of the core barrel, the operators can conveniently load and unload the inner gear ring products, and the working efficiency is guaranteed.
5. The cross section of the fixing plate is of an arc structure, an arc clamping groove matched with the vertical column is further formed in the center of the convex side of the fixing plate, and radial through holes are uniformly formed in the fixing plate. One side of the fixing piece is firmly clamped with the vertical column through the arc-shaped clamping groove, and the other side of the fixing piece is firmly clamped with the inner gear ring product, so that the uniformity and the firm safety of the pressing effect of the device on the outer wall of the inner gear ring sleeved on the core barrel are ensured.
6. The core barrel, the annular boss, the vertical column, the fixing piece and the base are all made of heat-resistant steel. The device is made of heat-resistant steel materials, namely the device is good in shape stability when heated, and therefore the effect of the device on the bundling effect of the thin-wall inner gear ring is guaranteed.
Drawings
FIG. 1 is a sectional view of a carburizing and quenching tooling for a thin-walled ring gear in embodiment 1;
FIG. 2 is a plan view of a carburizing and quenching tooling for the thin-walled ring gear in the embodiment 1;
FIG. 3 is a plan view of the carburizing and quenching tooling for the thin-wall ring gear in the embodiment 1 (without installing the thin-wall ring gear and the fixing ring disc);
FIG. 4 is a sectional view of a carburizing and quenching tooling for the thin-walled ring gear in embodiment 2;
FIG. 5 is a plan view of a susceptor in embodiment 2;
FIG. 6 is a plan view of the anchor sheet in example 2.
In the figure: 1. a core barrel; 2. an annular boss; 3. countersunk threaded holes; 4. a stationary ring plate; 5. a vertical column; 6. a vertical through hole; 7. a radial through hole; 8. a hollow structure; 9. a base; 10. mounting holes; 11. a fixing sheet; 12. an arc-shaped clamping groove; 13. hoisting holes; 14. thin-wall ring gear.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in figures 1-3, the utility model relates to a frock that is used for thin wall ring gear carburization quenching to process, including a core section of thick bamboo 1 the lower extreme of a core section of thick bamboo 1 is equipped with the annular boss 2 that extends to the outside the upper end of a core section of thick bamboo 1 still is equipped with hole for hoist 13. The upper end face of the annular boss 2 is also provided with a plurality of countersunk threaded holes 3, the countersunk threaded holes 3 are uniformly arranged on the same circumference concentric with the core cylinder 1 at intervals, the upper end face of the annular boss 2 further comprises a fixed ring disc 4 and a plurality of vertical columns 5, the upper end face and the lower end face of each vertical column 5 are respectively provided with a threaded outer surface matched with the countersunk threaded hole 3, the fixed ring disc 4 is also provided with a plurality of vertical through holes 6, the vertical through holes 6 are uniformly arranged on the same circumference concentric with the fixed ring disc 4 at intervals, the vertical through holes 6 on the fixed ring disc 4 correspond to the countersunk threaded holes on the annular boss 2, the inner diameter of each vertical through hole 6 is larger than the diameter 2-5 mm of the vertical column 5, the inner diameter of the fixed ring disc 4 is larger than the outer diameter 2-5 mm of the core cylinder 1, and the outer diameter of the fixed ring disc 4 is smaller than or. The core barrel 1 is also uniformly provided with a plurality of radial through holes 7, and the annular boss 2 between the countersunk head threaded hole 3 and the core barrel 1 is of a hollow structure 8.
In order to ensure the bunching effect of the device on the thin-wall annular gear, the further preferred technical scheme is that the core cylinder, the annular boss and the vertical column are all made of heat-resistant steel. The device is made of heat-resistant steel materials, namely the device is good in shape stability when heated, and therefore the effect of the device on the bundling effect of the thin-wall inner gear ring is guaranteed.
In order to facilitate the smooth manufacturing of the device, the heat-resistant steel is preferably Cr25Ni 20.
The application principle of the tool for carburizing and quenching the thin-wall ring gear in the embodiment 1 is as follows:
the annular boss 2 of the tool is placed on a horizontal workbench, the thin-wall inner gear ring 14 to be processed is sleeved on the core barrel 1 in a stacking mode, the total height of the thin-wall inner gear ring 14 is lower than the lower edge of the hoisting hole 13, the tool is hoisted to a chassis of a heating furnace through the hoisting hole 13, and carburizing and quenching processing are carried out.
Example 2
As shown in fig. 4 to 6, the difference between the embodiment 2 and the embodiment 1 is that the lower end of the core barrel 1 extends to the outside of the annular boss 2, the core barrel further comprises a base 9, a plurality of mounting holes 10 are uniformly arranged on the base 9 at intervals, the inner diameter of each mounting hole 10 is larger than the outer diameter of the core barrel 1 and smaller than the outer diameter of the annular boss 2, and the depth of each mounting hole 10 is larger than or equal to the distance that the lower end of the core barrel 1 extends to the outside of the annular boss 2. Still include stationary blade 11, the cross section of stationary blade 11 is the circular arc structure the convex side central point of stationary blade 11 puts and still is equipped with the arc draw-in groove 12 with 5 looks adaptations of vertical post, evenly is equipped with a plurality of radial through-holes on the stationary blade 11. The arc radius of the fixing plate 11 is matched with the outer diameter of a thin-wall annular gear 14 to be processed, and the arc clamping groove 12 is matched with the vertical column 5.
In order to ensure the shape-restraining effect of the device on the thin-wall annular gear, the further preferred technical scheme is that the core cylinder, the annular boss, the vertical column, the fixing piece and the base are made of heat-resistant steel. The device is made of heat-resistant steel materials, namely the device is good in shape stability when heated, and therefore the effect of the device on the bundling effect of the thin-wall inner gear ring is guaranteed.
In order to facilitate the smooth manufacturing of the device, the heat-resistant steel is preferably Cr25Ni 20.
The application principle of the tool for carburizing and quenching the thin-wall ring gear in the embodiment 2 is as follows:
preparing a plurality of bases 9, fully distributing a part of the bases 9 on a chassis of a heating furnace, placing the other part of the bases 9 on a horizontal workbench, and placing the lower ends of the tools in mounting holes on the bases 9; the thin-wall ring gear 14 to be processed is sleeved on the core barrel 1 in a stacking manner, and the total height of the thin-wall ring gear 14 is lower than the lower edge of the hoisting hole 13; a plurality of vertical columns 5 are uniformly and circumferentially arranged in countersunk threaded holes 3 of the annular boss 2 at intervals, fixing pieces 11 are inserted between the vertical columns 5 and the thin-wall inner gear ring 14 (the height of the fixing pieces 11 is slightly lower than the total height of the thin-wall inner gear ring 14), then a fixed disc 4 is sleeved at the upper end of the device through vertical through holes 6, and the thin-wall inner gear ring 14 to be processed is clamped between the fixed disc 4 and the annular boss 2 by nuts; the tool is hoisted into the mounting hole 10 of the base 9 in the heating furnace through the hoisting hole 13, and carburizing and quenching processing is carried out.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A tool for carburizing and quenching processing of a thin-wall inner gear ring is characterized by comprising a core barrel, wherein the lower end of the core barrel is provided with an annular boss extending outwards, the upper end of the core barrel is also provided with a hoisting hole, the upper end surface of the annular boss is also provided with a plurality of countersunk threaded holes, the countersunk threaded holes are uniformly arranged on the same circumference concentric with the core barrel at intervals, the tool also comprises a fixed ring disc and a plurality of vertical columns, the upper end and the lower end of each vertical column are respectively provided with a threaded outer surface matched with the countersunk threaded hole, the fixed ring disc is also provided with a plurality of vertical through holes, the vertical through holes are uniformly arranged on the same circumference concentric with the fixed ring disc at intervals, the vertical through holes on the fixed ring disc correspond to the countersunk threaded holes on the annular boss, the inner diameter of each vertical through hole is 2-5 mm larger than that of each vertical column, the inner diameter of each fixed ring disc is 2-5 mm larger than the outer diameter, the outer diameter of the fixed ring disc is less than or equal to the outer diameter of the annular boss.
2. The tool for carburizing and quenching machining of the thin-walled ring gear according to claim 1, wherein a plurality of radial through holes are uniformly formed in the core barrel, and the annular boss between the countersunk threaded hole and the core barrel is of a hollow structure.
3. The tool for carburizing and quenching machining of the thin-walled annular gear according to claim 2, wherein the lower end portion of the core cylinder extends to the outside of the annular boss, the tool further comprises a base, a plurality of mounting holes are uniformly arranged on the base at intervals, the inner diameter of each mounting hole is greater than the outer diameter of the core cylinder and less than the outer diameter of the annular boss, and the depth of each mounting hole is greater than or equal to the distance that the lower end portion of the core cylinder extends out of the annular boss.
4. The tool for carburizing and quenching machining of the thin-walled ring gear according to claim 3, further comprising a fixing piece, wherein the cross section of the fixing piece is of an arc structure, an arc-shaped clamping groove matched with the vertical column is further formed in the center of the convex surface side of the fixing piece, and a plurality of radial through holes are uniformly formed in the fixing piece.
5. The tool for carburizing and quenching machining of the thin-walled ring gear according to claim 4, wherein the core cylinder, the annular boss, the vertical column, the fixing piece and the base are all made of heat-resistant steel.
6. The tool for carburizing and quenching machining of the thin-walled ring gear according to claim 5, wherein the heat-resistant steel is Cr25Ni 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883479.6U CN210367882U (en) | 2019-06-13 | 2019-06-13 | Tool for carburizing and quenching thin-wall inner gear ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883479.6U CN210367882U (en) | 2019-06-13 | 2019-06-13 | Tool for carburizing and quenching thin-wall inner gear ring |
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| Publication Number | Publication Date |
|---|---|
| CN210367882U true CN210367882U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920883479.6U Active CN210367882U (en) | 2019-06-13 | 2019-06-13 | Tool for carburizing and quenching thin-wall inner gear ring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322857A (en) * | 2020-11-25 | 2021-02-05 | 大连日牵电机有限公司 | Carburizing and quenching tool for inner gear ring and quenching method thereof |
| CN113699330A (en) * | 2021-08-06 | 2021-11-26 | 湖北三江航天险峰电子信息有限公司 | Heat treatment tool and heat treatment method for thin-walled cylinder part |
-
2019
- 2019-06-13 CN CN201920883479.6U patent/CN210367882U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322857A (en) * | 2020-11-25 | 2021-02-05 | 大连日牵电机有限公司 | Carburizing and quenching tool for inner gear ring and quenching method thereof |
| CN113699330A (en) * | 2021-08-06 | 2021-11-26 | 湖北三江航天险峰电子信息有限公司 | Heat treatment tool and heat treatment method for thin-walled cylinder part |
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