CN220116640U - Axle type carburizing heat treatment combination frock - Google Patents
Axle type carburizing heat treatment combination frock Download PDFInfo
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- CN220116640U CN220116640U CN202321540284.4U CN202321540284U CN220116640U CN 220116640 U CN220116640 U CN 220116640U CN 202321540284 U CN202321540284 U CN 202321540284U CN 220116640 U CN220116640 U CN 220116640U
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- heat treatment
- chuck
- positioning
- carburizing heat
- shaft
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- 238000005255 carburizing Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 65
- 125000006850 spacer group Chemical group 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 10
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005520 cutting process Methods 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000005495 investment casting Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
The utility model discloses a shaft carburizing heat treatment combined tool which comprises a base plate (1), a spacer bush (2), an upright post (3), a work rest (4) and a reducing chuck (5); positioning screw holes are arranged at the periphery of the bottom material tray, and the positioning screw holes are arranged at least at four corners of the bottom material tray; the material rack is formed by connecting a plurality of equilateral hexagons II with equal wall thickness, and positioning through holes are respectively arranged at four corners; the bottom end of the upright post is provided with a thread matched with the positioning screw hole and is assembled with the base material plate; the upper end of the upright post is sleeved with a spacer bush and then penetrates through a positioning through hole of the material rack; the reducing chuck is provided with three limiting lugs which are uniformly distributed at 120 degrees, a plurality of supporting bulges and a part installation positioning inner hole. The split type combined design of the material rest and the variable-diameter chuck is adopted, so that the universality of the multi-specification shaft-diameter part can be met, the split is convenient, and the production is flexible and various.
Description
Technical Field
The utility model belongs to the technical field of mechanical manufacturing, and particularly relates to a combined tool for carburizing heat treatment of shafts.
Background
Carburizing and quenching is a means of surface hardening by carburizing the surface of low-carbon carburized steel to make the steel into a high carbon content state. In the production, besides reducing the deformation amount of heat treatment by adjusting the carburizing and quenching process according to the product, the design and the use of the carburizing and quenching tool can greatly influence the shaft diameter runout and the precision of the product. At present, the traditional shaft carburizing heat treatment structure is that parts are directly supported on a special work rack tool.
For example, chinese patent publication No. CN213538074U discloses a carburized work or material rest for a CVT belt wheel shaft, and the work or material rest is matched with a triangular support frame arranged by vertical projection of a middle interlayer work or material rest through a positioning hole arranged by a standard work or material rest, so that the problems of vibration collision and work or material rest deformation caused by small space between parts are solved.
And as disclosed in Chinese patent publication No. CN205347558U, the gear shaft carburizing device for the shaft neck and the gear shaft neck has great difference, and the gear shaft carburizing device can achieve the purposes of improving the production efficiency, reducing the collision injury of products and reducing the production cost by designing a fixed jack and a staggered layer jack on a fixed support plate and using the gear shaft carburizing device in a staggered layer according to the structural characteristics of parts during material distribution.
In order to ensure the service life of the heat treatment carburizing tooling and reduce high-temperature creep, the heat treatment carburizing tooling is generally manufactured by investment precision casting by adopting a heat-resistant alloy made of metal chromium (the content of the alloy is about 20 percent) and metal nickel (the alloy content of the alloy is about 20 to 80 percent). The price of the metal nickel is high, and the whole cost of the tool is high. The number of stations of the continuous carburizing furnace (or the disc pushing furnace) for heat treatment is large, and the number of corresponding matched tools is also large, so that the input cost of the heat treatment tools is high. It is needed to design a shaft carburizing heat treatment combined tool which meets the characteristics of part deformation and collision prevention requirements, has long service life and low cost, and can be flexibly combined for use to meet the requirements of multiple products and easy use and popularization.
Disclosure of Invention
The utility model aims to provide a shaft carburizing heat treatment combined tool, which is used for improving the heat treatment deformation and the gear precision after heat treatment, meets the characteristics of part deformation and anti-collision requirements, has long service life and low cost, and can be flexibly combined to meet the requirements of multiple products and easy popularization and use.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a shaft carburizing heat treatment combined tool comprises a base material disc, a spacer bush, an upright post, a material frame and a reducing chuck; positioning screw holes are arranged at the periphery of the bottom material tray, and the positioning screw holes are arranged at least at four corners of the bottom material tray; the material rack is formed by connecting a plurality of equilateral hexagons II with equal wall thickness, and positioning through holes are respectively arranged at four corners; the bottom end of the upright post is provided with a thread matched with the positioning screw hole and is assembled with the base material plate; the upper end of the upright post is sleeved with a spacer bush and then penetrates through a positioning through hole of the material rack; the reducing chuck is provided with three limiting lugs which are uniformly distributed at 120 degrees, a plurality of supporting bulges and a part installation positioning inner hole.
According to the utility model, through the cooperation of the upright posts and the spacer bush, the material rack is arranged on the base material plate, and the parts can be placed on the material rack for carburizing heat treatment; when the inner hole of the material rack is not matched with the part, the reducing chuck can be placed on the material rack, and the part is supported by the reducing chuck, so that the tool disclosed by the utility model can meet the requirement of multiple products. The material rack is formed by connecting a plurality of equilateral hexagons II with equal wall thickness, so that deformation and stress concentration generated by repeated heating and cooling of the material rack can be reduced, and the service life of the tool is prolonged; the wall thickness is 8-10 mm, and has enough supporting strength.
According to the utility model, through reasonable combination of the diameter-variable chuck and the material rack, the same fixture can realize supporting and clamping of shaft parts with different specifications, and the shaft diameter runout of the parts after heat treatment is less than or equal to 0.06mm. The shaft carburizing heat treatment combined tool meets the characteristics of part deformation and collision prevention, has long service life and low cost, and is high in universality and easy to popularize.
As a further explanation of the utility model, the chuck body of the reducing chuck is in the shape of an equilateral hexagon iii, and the side length of the chuck body is equal to the side length of a plurality of equilateral hexagons ii with equal wall thickness of the material frame. The limiting lugs are uniformly distributed on the outer edge of the reducing chuck; the supporting bulges are circumferentially arranged along the inner hole of the part installation and positioning, and guide grooves are arranged between the supporting bulges.
The limiting hanging lugs of the reducing chuck and the unilateral fit clearance of the equilateral hexagon II are about 1.5mm, so that the limiting hanging lugs can play a role in limiting the movement of the reducing chuck. The supporting protrusions arranged on the upper end face of the reducing chuck are in contact with the end face of the part, so that vertical oil quenching of the part is ensured; and diversion trenches are uniformly distributed among the supporting bulges and are used for ensuring the flow uniformity of quenching oil. The middle part of reducing chuck sets up 1 corresponding part installation location hole according to part diameter of axle size, and the unilateral about 1.5mm of fit tolerance of the hole size and part diameter of axle is in the interior size, and this fit size is used for the work piece location to prevent that the drunkenness from influencing heat altered shape and producing and colliding with, and suitable reservation thermal expansion clearance can be fine avoid the part diameter of axle and can't separate after reducing chuck adhesion simultaneously.
As a further explanation of the utility model, the bottom plate is formed by connecting a plurality of equilateral hexagons I with equal wall thickness. The base material plate is formed by connecting a plurality of equilateral hexagons I with equal wall thickness, so that deformation and stress concentration generated by repeated heating and cooling of the material tool can be reduced, and the service life of the tool is prolonged; the wall thickness is 8-10 mm, and has enough supporting strength. Reinforcing rib plates are further arranged around the base material plate, and four corners are proper transition stress relief fillets.
As a further illustration of the utility model, the shelves are arranged in layers according to the total length of the part, the layers being supported by an equal number of spacers.
As a further explanation of the utility model, the base plate, the spacer bush, the upright post, the material rack and the reducing chuck are all made of nickel-chromium heat-resistant alloy steel Cr25Ni20Si 2. Typical chemical composition is carbon C: less than or equal to 0.20 percent, silicon Si:1.50 to 2.50 percent, mn: less than or equal to 1.50 percent, S: less than or equal to 0.030 percent, phosphorus P: less than or equal to 0.035%, cr: 24.00-27.00%, ni:18.00-21.00%, and the tool manufacturing mode is investment precision casting.
The utility model has the beneficial effects that:
1. the utility model is different from the traditional shaft heat treatment carburizing combination tool, and has good tool universality and multiple purposes. Through the cooperation of reducing chuck and work or material rest, a set of frock can be applicable to multiple diameter of axle specification part (two at least specifications). I.e. the equilateral hexagonal internally cut hole of the material rack described in example 1 is directly and independently used with the shaft diameter support part (see fig. 9). In example 2, the second use of the support part with smaller shaft diameter specifications is described after the material rack is provided with the reducing chuck (see fig. 10).
2. The utility model is different from the traditional carburizing combination tool in the combination mode of the material rack and the reducing chuck. The traditional material frame is usually cast integrally and is only suitable for fixing the parts with the matched shaft diameter sizes. The utility model is a split type combined design, can meet the universality of shaft diameter parts with multiple specifications, and has the advantages of convenient split and flexible and various production.
3. The diameter-variable chuck is light in weight, light and firm in installation, capable of greatly reducing the manufacturing cost of the tool and easy to popularize; after the utility model is used, the collision damage of the product and the thermal deformation of the shaft are effectively controlled, and the heat treatment product has good quality.
Drawings
Fig. 1 is a schematic view of the overall assembly structure of an embodiment of the present utility model.
Fig. 2 is a schematic diagram of the structure of the chassis of fig. 1.
Fig. 3 is a schematic view of the spacer structure of fig. 1.
Fig. 4 is a schematic view of the column structure of fig. 1.
Fig. 5 is a schematic view of the rack structure of fig. 1.
Fig. 6 is a schematic view of the reducing chuck of fig. 1.
Fig. 7 is a schematic bottom view of fig. 6.
Fig. 8 is a schematic side view of fig. 6.
Fig. 9 is a schematic partial cross-sectional view of the rack, parts assembly of fig. 1.
Fig. 10 is a partial cross-sectional schematic view of the assembly of the work or material rest, reducing chuck, and parts of fig. 1.
Wherein, each icon is marked and the corresponding part name is as follows:
1-of a base plate, 1-of a positioning screw hole, 1-of an equilateral hexagon inscribed hole I, 1-of an equilateral hexagon I; 2-a spacer bush; 3-stand columns; 4-material rack, 4-1-positioning through hole, 4-2-equilateral hexagon II; the device comprises a 5-reducing chuck, a 5-1-limiting hanging lug, a 5-2-supporting bulge, a 5-3-diversion trench, a 5-4-chuck side length, a 5-5-chuck main body and a 5-6-part installation positioning inner hole; 6-parts.
Description of the embodiments
The technical solution of the present utility model is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings.
Examples
As shown in fig. 1, the shaft carburizing heat treatment combined tool comprises a base material disc 1, a plurality of spacers 2, six upright posts 3, two material brackets 4 and a plurality of reducing chucks 5.
As shown in fig. 2, six positioning screw holes 1-1 are arranged around the bottom plate 1, and the specific distribution is as follows: one of the four corners is arranged, and the middle positions of the two sides are respectively arranged. The base plate 1 is formed by connecting a plurality of equilateral hexagons I1-2 with equal wall thickness (8 mm).
As shown in fig. 5, the material rack 4 is formed by connecting a plurality of equilateral hexagons ii 4-2 with equal wall thickness (8 mm), and positioning through holes 4-1 are arranged at four corners.
As shown in fig. 1, 2 and 3, the bottom end of the upright post 3 is provided with threads matched with the positioning screw hole 1-1 and assembled with the base material plate 1; the upper end of the upright post 3 is sleeved with the spacer bush 2 and then penetrates through the positioning through hole 4-1 of the material rack 4.
As shown in fig. 6-8, the reducing chuck 5 is provided with three spacing lugs 5-1 uniformly distributed at 120 degrees, ten supporting bulges 5-2 and a part installation positioning inner hole 5-6. The shape of the chuck main body 5-5 of the reducing chuck 5 is an equilateral hexagon III, and the side length 5-4 of the chuck is equal to the side length of a plurality of equilateral hexagons II 4-2 with equal wall thickness of the material rack 4. The limiting lugs 5-1 are uniformly distributed on the outer edge of the reducing chuck 5; the supporting protrusions 5-2 are circumferentially arranged along the part mounting and positioning inner holes 5-6, and guide grooves 5-3 are arranged between the supporting protrusions 5-2.
The tooling of the embodiment is used for a first part, the diameter of which is matched with an inner cutting hole of an equilateral hexagon II of a material rack, as shown in fig. 9, the first part is inserted into the inner cutting hole of the equilateral hexagon II of the material rack which is matched with the diameter of the shaft, the size of the inner cutting hole is about 1.5mm with the single side of the matching tolerance of the diameter of the shaft, the matching size is used for positioning a workpiece to prevent the thermal deformation from being influenced by the play and the collision from being generated, and meanwhile, the proper reserved thermal expansion gap can well prevent the shaft diameter of the part and the inner wall of the hexagon from being clamped and not taken out. Six sides of the equilateral hexagon II are contacted with the end face of the first part, so that the first part is well supported and is vertically quenched by oil, and the key of ensuring that the shaft part obtains micro thermal deformation is ensured.
Examples
A shaft carburizing heat treatment combined tool comprises a base material disc 1, a plurality of spacer bushes 2, four upright posts 3, a material frame 4 and a plurality of reducing chucks 5.
Four corners of the base plate 1 are provided with a positioning screw hole 1-1. The base plate 1 is formed by connecting a plurality of equilateral hexagons I1-2 with equal wall thickness (10 mm).
The material frame 4 is formed by connecting a plurality of equilateral hexagons II 4-2 with equal wall thickness (10 mm), and positioning through holes 4-1 are arranged at four corners.
The bottom end of the upright post 3 is provided with threads matched with the positioning screw hole 1-1 and is assembled with the base material plate 1; the upper end of the upright post 3 is sleeved with the spacer bush 2 and then penetrates through the positioning through hole 4-1 of the material rack 4.
The reducing chuck 5 is provided with three spacing hangers 5-1 uniformly distributed at 120 degrees, eight supporting bulges 5-2 and a part installation positioning inner hole 5-6. The shape of the chuck main body 5-5 of the reducing chuck 5 is an equilateral hexagon III, and the side length 5-4 of the chuck is equal to the side length of a plurality of equilateral hexagons II 4-2 with equal wall thickness of the material rack 4. The limiting lugs 5-1 are uniformly distributed on the outer edge of the reducing chuck 5; the supporting protrusions 5-2 are circumferentially arranged along the part mounting and positioning inner holes 5-6, and guide grooves 5-3 are arranged between the supporting protrusions 5-2.
The tooling of the embodiment is used for a second part with a smaller shaft diameter than the inner cutting hole of the equilateral hexagon II of the material frame, as shown in fig. 10, the reducing chuck 5 is inserted into the inner cutting hole of the equilateral hexagon II of the material frame 4, and the limit hanging lugs of the reducing chuck and the unilateral fit clearance of the equilateral hexagon II are about 1.5mm, so that the effect of limiting the movement of the reducing chuck can be achieved; then the second part is inserted into a part mounting positioning inner hole 5-6 of the reducing chuck 5, the matching tolerance of the inner hole size and the part shaft diameter is unilateral by about 1.5mm, the matching size is used for workpiece positioning to prevent the thermal deformation from being influenced by the play and the collision from being generated, and meanwhile, the proper reserved thermal expansion gap can well prevent the part shaft diameter from being separated from the reducing chuck after adhesion.
Further, in the tooling of the above embodiments 1 and 2, the base plate (1), the spacer bush (2), the column (3), the material frame (4) and the reducing chuck (5) are all made of nickel-chromium heat-resistant alloy steel Cr25Ni20Si 2. Typical chemical composition is carbon C: less than or equal to 0.20 percent, silicon Si:1.50 to 2.50 percent, mn: less than or equal to 1.50 percent, S: less than or equal to 0.030 percent, phosphorus P: less than or equal to 0.035%, cr: 24.00-27.00%, ni:18.00-21.00%, and the tool manufacturing mode is investment precision casting.
It is to be understood that the above-described embodiments are merely illustrative of the utility model and are not intended to limit the practice of the utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (6)
1. A shaft carburizing heat treatment combined tool is characterized in that: comprises a bed charge tray (1), a spacer bush (2), an upright post (3), a material rack (4) and a reducing chuck (5); positioning screw holes (1-1) are arranged around the bottom material plate (1), and the positioning screw holes (1-1) are arranged at least at four corners of the bottom material plate (1); the material rack (4) is formed by connecting a plurality of equilateral hexagons II (4-2) with equal wall thickness, and positioning through holes (4-1) are arranged at four corners; the bottom end of the upright post (3) is provided with threads matched with the positioning screw hole (1-1) and is assembled with the bottom material plate (1); the upper end of the upright post (3) is sleeved with a spacer bush (2) and then penetrates through a positioning through hole (4-1) of the material rack (4); the reducing chuck (5) is provided with three spacing hangers (5-1) uniformly distributed at 120 degrees, a plurality of supporting bulges (5-2) and part installation positioning inner holes (5-6).
2. The shaft carburizing heat treatment combination tool according to claim 1, wherein: the chuck main body (5-5) of the reducing chuck (5) is of an equilateral hexagon III, and the side length of the chuck main body is equal to the side length of a plurality of equilateral hexagons II (4-2) with equal wall thickness of the material rack (4).
3. The shaft carburizing heat treatment combination tool according to claim 1 or 2, wherein: the limiting lugs (5-1) are uniformly distributed on the outer edge of the reducing chuck (5); the supporting bulges (5-2) are circumferentially arranged along the part installation positioning inner holes (5-6), and guide grooves (5-3) are arranged between the supporting bulges (5-2).
4. The shaft carburizing heat treatment combination tool according to claim 1, wherein: the base plate (1) is formed by connecting a plurality of equilateral hexagons I (1-2) with equal wall thickness.
5. The shaft carburizing heat treatment combination tool according to claim 1, wherein: the material racks (4) are arranged in multiple layers according to the total length of the parts, and the layers are supported by the same number of spacer bushes (2).
6. The shaft carburizing heat treatment combination tool according to claim 1, wherein: the base plate (1), the spacer bush (2), the upright posts (3), the material rack (4) and the reducing chuck (5) are made of nickel-chromium heat-resistant alloy steel Cr25Ni20Si 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540284.4U CN220116640U (en) | 2023-06-16 | 2023-06-16 | Axle type carburizing heat treatment combination frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540284.4U CN220116640U (en) | 2023-06-16 | 2023-06-16 | Axle type carburizing heat treatment combination frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220116640U true CN220116640U (en) | 2023-12-01 |
Family
ID=88915200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321540284.4U Active CN220116640U (en) | 2023-06-16 | 2023-06-16 | Axle type carburizing heat treatment combination frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220116640U (en) |
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2023
- 2023-06-16 CN CN202321540284.4U patent/CN220116640U/en active Active
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