CN112792303A - Forming process for rear axle shaft of large mining truck - Google Patents
Forming process for rear axle shaft of large mining truck Download PDFInfo
- Publication number
- CN112792303A CN112792303A CN202110017408.XA CN202110017408A CN112792303A CN 112792303 A CN112792303 A CN 112792303A CN 202110017408 A CN202110017408 A CN 202110017408A CN 112792303 A CN112792303 A CN 112792303A
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- Prior art keywords
- rear axle
- axle shaft
- hole
- forming process
- mining truck
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 230000000630 rising effect Effects 0.000 claims abstract description 9
- 239000004576 sand Substances 0.000 claims abstract description 8
- 238000005336 cracking Methods 0.000 claims description 13
- 239000002023 wood Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000003754 machining Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003031 feeding effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a forming process of a rear axle shaft of a large mining truck. This large-scale mining truck rear axle forming process includes rear axle inner chamber, the core, the main shaft hole, the side shaft hole, main runner and cross gate, the core sets up the one end in rear axle inner chamber, main shaft hole and side shaft hole set gradually in rear axle inner chamber, main runner and cross gate intercommunication, cross gate one end is connected near the one end of core bottom with the rear axle, the cross gate other end is connected with second floor rising head, rear axle inner chamber upside still is connected with the first layer rising head, the rear axle macrostoma outside is connected with the third layer rising head, rear axle inner chamber subsidy is the hole setting. According to the forming process for the rear axle shaft of the large mining truck, the riser is subsidized and moved to the inner hole, the heat insulation effect of the inner hole is good, the full feeding of a product is facilitated, and the chill is changed from sand coating to direct chill; and modifying the patch on the die, wherein the patch is changed into an inner hole from the outside.
Description
Technical Field
The invention relates to the technical field of rear axle shaft forming processes, in particular to a rear axle shaft forming process of a large mining truck.
Background
The rear axle shaft is formed by casting, because the left end of the shaft tube needs to be connected with the axle housing flange plate, and the right end needs to be connected with the rear axle housing middle section assembly, the machining fit size precision is higher, the concentricity of the two ends is 0.06mm, and the current machining method is to select a common lathe for machining.
Meanwhile, in the prior art, the chilling block is not coated with sand, the chilling effect is poor, and meanwhile, in the prior art, the feeding effect on the product is poor.
It is therefore imperative to redesign a new large mining truck rear axle forming process to address the above problems.
Disclosure of Invention
The invention provides a forming process of a rear axle shaft of a large mining truck, which aims to solve the technical problems in the background technology.
The invention provides a large-scale mining truck rear axle shaft forming process which comprises a rear axle shaft inner cavity, a core head, a main shaft hole, a side shaft hole, a main runner and a cross runner, wherein the core head is arranged at one end of the rear axle shaft inner cavity, the main shaft hole and the side shaft hole are sequentially arranged in the rear axle shaft inner cavity, the main runner is communicated with the cross runner, one end of the cross runner is connected with one end, close to the core head, of the rear axle shaft inner cavity, the other end of the cross runner is connected with a second layer of risers, a first layer of risers is further connected to the upper side of the rear axle shaft inner cavity, a third layer of risers is connected to the outer side of a large opening of a rear axle shaft, and the inner cavity of the rear axle shaft is provided.
Optionally, a sand-coated outer chilling block is paved on the outer side wall of the inner cavity of the rear axle shaft, and the thickness of the sand-coated outer chilling block is 5-10 mm.
Optionally, the wood pattern is arranged outside the inner cavity of the rear axle shaft, the main shaft hole and the side shaft hole, the wood pattern is a template full pattern, the size of the template is 2700x2700, the structure is firm, the surface is smooth, the template lifting crane is installed, the middle box is firstly lifted, and then the lower box is lifted.
Optionally, a plurality of anti-cracking ribs are fixedly connected to the side wall of the rear axle shaft, and the thickness of the anti-cracking ribs is 15 mm.
Optionally, the anti-cracking ribs are evenly distributed on the circumference, and the number of the anti-cracking ribs is six.
Optionally, after the first layer of risers, the second layer of risers and the third layer of risers are subjected to sand shakeout, hot cutting is carried out at about 200-300 ℃, and furnace normalizing and tempering are immediately carried out after cutting.
Optionally, the outer side wall of the inner cavity of the rear axle shaft is thickened, and the core print is positioned along the shape.
Optionally, the inner cavity of the rear axle shaft is also provided with a core box, the upper part and the lower part of the core box are respectively provided with four lifting lugs, the lifting lugs are used for facilitating lifting and turning over, and the half height of the core box is divided into three sections.
Optionally, the tolerance of the inner hole at the left end of the inner cavity of the rear axle shaft is 0.1mm, the perpendicularity of the end face is 0.4mm, the chamfer angle of the end face is 1.5X45 degrees, and the roughness of the inner hole and the end face are both 3.2 degrees.
The invention has the following beneficial effects:
1. the forming process of the rear axle shaft of the large mining truck comprises a rear axle shaft inner cavity, a core head, a main axle hole, a side axle hole, a main runner and a cross runner, wherein the core head is arranged at one end of the rear axle shaft inner cavity;
2. the riser is subsidized and moved to the inner hole, so that the inner hole has good heat insulation effect and is beneficial to fully feeding the product;
3. changing a pouring system into pouring in an up-down layered manner; changing the cold iron from sand-lined to direct cold iron;
4. and modifying the patch on the die, wherein the outer end of the patch is changed into an inner hole.
Drawings
FIG. 1 is a schematic structural diagram of a rear axle shaft forming process for a large mining truck according to the present invention;
FIG. 2 is a schematic structural diagram of a core box of a large mining truck rear axle shaft forming process provided by the invention;
FIG. 3 is a schematic structural view of an embodiment of a rear axle shaft forming process for a large mining truck according to the present invention;
in the figure, 100, a rear axle shaft inner cavity; 200. a core print; 210. a core box; 300. a spindle hole; 400. a side axle hole; 500. a main runner; 600. a cross gate; 610. a first layer of risers; 620. a second layer of risers; 630. a third layer of risers; 700. cracking prevention of ribs; 800. wood molding; 900. sand-covered external chill.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a rear axle shaft forming process of a large mining truck according to the present invention; FIG. 2 is a schematic structural diagram of a core box of a large mining truck rear axle shaft forming process provided by the invention; FIG. 3 is a schematic structural view of an embodiment of a large mining truck rear axle shaft forming process provided by the invention.
The rear axle shaft is an important part on the rear axle assembly of the automobile chassis and is formed by casting, because the left end of the shaft tube needs to be connected with a flange plate of the axle housing, and the right end needs to be connected with a middle section assembly of the rear axle housing, the machining fit size precision is high, the concentricity of the two ends is 0.06mm, and the current machining method is to use a common lathe for machining.
Meanwhile, in the prior art, the chilling block is not coated with sand, the chilling effect is poor, and meanwhile, in the prior art, the feeding effect on the product is poor, further, in the prior art, a pouring system is directly connected with a cross gate 600, the impact force of molten steel on the bottom is large, splashing is easy to generate, the molten steel is easy to oxidize, the product is oxidized and has slag inclusion defects, and the surface defects of the product are caused.
The forming process of the rear axle shaft of the large mining truck is designed to solve the problems.
The forming process of the rear axle shaft of the large mining truck comprises a rear axle shaft inner cavity 100, a core print 200, a main shaft hole 300, a side shaft hole 400, a main runner 500 and a cross runner 600.
Wherein, the core print 200 sets up the one end at rear axle shaft inner chamber 100, and main shaft hole 300 and side shaft hole 400 set gradually in rear axle shaft inner chamber 100, and main runner 500 and horizontal runner 600 intercommunication, horizontal runner 600 one end is connected near the one end of core print 200 with rear axle shaft inner chamber 100, and the horizontal runner 600 other end is connected with second floor rising head 620, and rear axle shaft inner chamber 100 upside still is connected with first floor rising head 610, and the rear axle shaft 100 macrostoma outside is connected with third floor rising head 630, and rear axle shaft inner chamber 100 subsidies and sets up for the hole.
Therefore, the forming process of the large-scale mining truck rear axle shaft can be concretely summarized into six steps:
the method comprises the following steps: the process is changed, the process is simulated and analyzed again, the process scheme is modified, and a riser is subsidized and moved to an inner hole, so that the inner hole has good heat insulation effect and is beneficial to fully feeding the product; changing a pouring system into upper and lower layered feeding and changing the chill from sand-lined to direct chill;
step two: modifying the mould, and modifying the subsidy on the mould;
step three: modeling, namely arranging technological elements such as a pouring gate, a chill, a riser and the like according to a new process;
step four: pouring, namely pouring and forming the steel alloy liquid, and opening a box to cut a dead head;
step five: heat treatment;
step six: and (5) processing and flaw detection.
In this embodiment, the sand-lined external chiller 900 is laid on the outer side wall of the inner cavity 100 of the rear axle shaft, and the thickness of the sand-lined external chiller 900 is 5-10 mm.
In this embodiment, the wood pattern 800 is arranged outside the rear axle inner cavity 100, the main axle hole 300 and the side axle hole 400, the wood pattern 800 is a template full pattern, the template size is 2700x2700, the structure is firm, the surface is smooth, the mold lifting crane is installed, the middle box is firstly lifted, and then the lower box is lifted.
In this embodiment, a plurality of anti-cracking ribs 700 are fixedly connected to the side wall of the rear axle, and the thickness of the anti-cracking ribs 700 is 15 mm.
As a preferred embodiment of this embodiment, the anti-cracking ribs 700 are uniformly distributed circumferentially, and the number of the anti-cracking ribs 700 is six.
In the embodiment, after the first layer of risers 610, the second layer of risers 620 and the third layer of risers are required to be subjected to sand shakeout, hot cutting is carried out at about 200-300 ℃, and furnace normalizing and tempering are immediately carried out after cutting.
In this embodiment, the outer sidewall of the rear axle cavity 100 is thickened and the core print 200 is positioned with the shape.
In this embodiment, the inner cavity 100 of the rear axle shaft is further provided with a core box 210, the upper part and the lower part of the core box 210 are respectively provided with four lifting lugs, the lifting lugs are used for facilitating lifting and turning over, and the half height of the core box 210 is divided into three sections.
In this embodiment, the tolerance of the inner hole at the left end of the inner cavity 100 of the rear axle shaft is 0.1mm, the perpendicularity of the end face is 0.4mm, the chamfer angle of the end face is 1.5X45 degrees, and the roughness of the inner hole and the end face are both 3.2 degrees.
The forming process of the rear axle shaft of the large mining truck comprises a rear axle shaft inner cavity 100, a core print 200, a main axle hole 300, a side axle hole 400, a main runner 500 and a cross runner 600, wherein the core print 200 is arranged at one end of the rear axle shaft inner cavity 100, the main axle hole 300 and the side axle hole 400 are sequentially arranged in the rear axle shaft inner cavity 100, the main runner 500 is communicated with the cross runner 600, one end of the cross runner 600 is connected with one end, close to the core print 200, of the rear axle shaft inner cavity 100, the other end of the cross runner 600 is connected with a second layer of risers 620, a first layer of risers 610 is further connected to the upper side of the rear axle shaft inner cavity 100, a third layer of risers 630 is connected to the lower side of the rear axle shaft inner cavity 100, and; the riser is subsidized and moved to the inner hole, so that the inner hole has good heat insulation effect and is beneficial to fully feeding the product; changing a pouring system into pouring in an up-down layered manner; changing the cold iron from sand-lined to direct cold iron; and modifying the patch on the die, wherein the outer end of the patch is changed into an inner hole.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a large-scale mining truck rear axle forming process, a serial communication port, including rear axle inner chamber, core, main shaft hole, side shaft hole, main runner and horizontal runner, the core sets up the one end of rear axle inner chamber, the main shaft hole with the side shaft hole sets gradually the rear axle inner chamber intracavity, main runner with the horizontal runner intercommunication, horizontal runner one end with rear axle inner chamber is close to the one end of core is connected, the horizontal runner other end is connected with second floor's rising head, rear axle inner chamber upside still is connected with first layer rising head, the rear axle macrostoma outside is connected with the third layer rising head, rear axle inner chamber subsidy is the hole setting.
2. The forming process of the large-scale mining truck rear axle shaft according to claim 1, characterized in that a sand-lined outer chiller is paved on the outer side wall of the inner cavity of the rear axle shaft, and the thickness of the sand-lined outer chiller is 5-10 mm.
3. The process of claim 1, wherein wood patterns are arranged outside the inner cavity of the rear axle shaft, the main axle hole and the side axle holes, the wood patterns are full patterns of templates, the template sizes are 2700x2700, the structure is firm, the surface is smooth, a mold lifting crane is installed, a middle box is firstly punched, and then a lower box is punched.
4. The forming process of the large-sized mining truck rear axle shaft according to claim 1, wherein a plurality of anti-cracking ribs are fixedly connected to the side wall of the rear axle shaft, and the thickness of the anti-cracking ribs is 15 mm.
5. The forming process of the large-scale mining truck rear axle shaft according to claim 4, characterized in that the anti-cracking ribs are uniformly distributed circumferentially, and the number of the anti-cracking ribs is six.
6. The forming process of the large-scale mining truck rear axle shaft according to claim 1, characterized in that after the first layer of risers, the second layer of risers and the third layer of risers are required to be subjected to sand shakeout, hot cutting is performed at about 200-300 ℃, and furnace normalizing and tempering are performed immediately after cutting.
7. The process of claim 1, wherein the outer sidewall of the inner cavity of the rear axle shaft is thickened, and the core print is positioned in a shape-following manner.
8. The forming process of the rear axle shaft of the large-scale mining truck as claimed in claim 1, wherein a core box is further arranged in the inner cavity of the rear axle shaft, four lifting lugs are arranged on the upper portion and the lower portion of the core box and used for facilitating lifting and turning over, and the half height of the core box is divided into three sections.
9. The forming process of the large mining truck rear axle shaft according to claim 1, wherein the tolerance of an inner hole at the left end of an inner cavity of the rear axle shaft is 0.1mm, the perpendicularity of an end face is 0.4mm, the chamfer angle of the end face is 1.5X45 degrees, and the roughness of the inner hole and the end face are both 3.2 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017408.XA CN112792303A (en) | 2021-01-07 | 2021-01-07 | Forming process for rear axle shaft of large mining truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017408.XA CN112792303A (en) | 2021-01-07 | 2021-01-07 | Forming process for rear axle shaft of large mining truck |
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| Publication Number | Publication Date |
|---|---|
| CN112792303A true CN112792303A (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110017408.XA Pending CN112792303A (en) | 2021-01-07 | 2021-01-07 | Forming process for rear axle shaft of large mining truck |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1757462A (en) * | 2005-09-30 | 2006-04-12 | 中信重型机械公司 | Art for casting bearing-wheel of rotary kiln |
| CN203470827U (en) * | 2013-06-26 | 2014-03-12 | 中信重工机械股份有限公司 | Novel cast steel casting system |
| CN109465397A (en) * | 2018-12-29 | 2019-03-15 | 湖州中联机械制造有限公司 | A kind of casting technique of lower bearing bracket |
| CN111097881A (en) * | 2019-11-19 | 2020-05-05 | 宜昌船舶柴油机有限公司 | Casting forming process of roller steel casting |
-
2021
- 2021-01-07 CN CN202110017408.XA patent/CN112792303A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1757462A (en) * | 2005-09-30 | 2006-04-12 | 中信重型机械公司 | Art for casting bearing-wheel of rotary kiln |
| CN203470827U (en) * | 2013-06-26 | 2014-03-12 | 中信重工机械股份有限公司 | Novel cast steel casting system |
| CN109465397A (en) * | 2018-12-29 | 2019-03-15 | 湖州中联机械制造有限公司 | A kind of casting technique of lower bearing bracket |
| CN111097881A (en) * | 2019-11-19 | 2020-05-05 | 宜昌船舶柴油机有限公司 | Casting forming process of roller steel casting |
Non-Patent Citations (3)
| Title |
|---|
| 伏思静: "《铸造工基本技能》", 31 March 2010, 哈尔滨：哈尔滨工程大学出版社 * |
| 曹文龙, 北京：机械工业出版社 * |
| 罗启全: "《铝合金石膏型精密铸造》", 30 April 2005, 广州：广东科技出版社 * |
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Application publication date: 20210514 |
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