A new energy reducer housing casting tool
By optimizing the casting mold casting system and designing tooling, the problem that the new energy load-loading vehicle reducer shell is prone to defects such as cold partitions and air holes during the casting process, which significantly reduces the scrap rate and improves product quality.
Patent Information
- Application Number
- CN202420858806.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The housing of the new energy load truck reducer is prone to defects such as cold partition, air holes, and insufficient watering during the casting process, resulting in a high waste rate.
A new energy reducer shell casting tool is designed. By optimizing the casting mold casting system, increasing the number of risers and ceramic filters, the combination of split production and overall production is adopted to improve the filling speed and the directional solidification of the castings.
The quality of the new energy reducer shell castings has been significantly improved, and defects such as cold isolation, oxidation, pores, and sand holes have been reduced, the scrap rate has been reduced, and the product quality and production efficiency have been improved.
Smart Images
Figure CN222740217U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling and moulds, and in particular to a new energy reducer housing casting tooling. Background Art
[0002] The reducer housing is an important component of the reducer. It assembles the main components such as gears and shafts in the reducer into a whole. During the operation of the whole vehicle, the housing not only needs to absorb the force and torque generated by the gears when they are working, but also ensure that the shafts and gears have relatively accurate positions. This requires the housing to have good strength and rigidity. At the same time, the gear oil is stored inside the housing, and its air tightness is also required to be high. At present, the reducer housing material of new energy trucks is mostly ductile iron. Due to the lightweight design, the wall thickness of the reducer housing is relatively thin. In addition, the inner cavity of the housing is formed by resin sand cores. The heat dissipation speed of the molten iron is fast, and the fluidity of the molten iron becomes poor. In the casting production, defects such as cold shut, air holes, and insufficient pouring are very likely to occur, resulting in a high scrap rate for such products.
[0003] In view of the above-mentioned problems, this application proposes a new energy reducer housing casting tool. Utility Model Content
[0004] (I) Purpose of the utility model
[0005] In order to solve the problems existing in the reducer housing of the background technology, the utility model proposes a new energy reducer housing casting tooling, which reduces the scrap rate of the reducer housing, improves product quality and saves production costs by optimizing the design of the casting mold pouring system.
[0006] (II) Technical solution
[0007] In order to achieve the purpose of the utility model, the following technical scheme is adopted: a new energy reducer housing casting tool, including an upper template, a lower template, a pattern, a sand core positioning core head, a pouring system, an exhaust rod and an attached test block, characterized in that the pattern and the template are designed according to a 2:1 quantitative relationship, and the pattern and the template are made as a whole; the sand core positioning core head, the pouring system, the exhaust rod, the attached test block and the template are made separately, the pouring system is installed on the upper and lower templates by bolts, the exhaust rod and the attached test block are installed on the upper template, and the sand core positioning core head is installed on the lower template.
[0008] Preferably, the pouring system comprises a sprue, a runner, an ingrate, a riser and a ceramic filter, and is installed on one side of the template.
[0009] The ceramic filter is installed at the bottom of the sprue and connected to the cross runner, and plays a role in blocking slag and slowing down the flow during pouring.
[0010] There are 6 risers in total, 4 on the upper plate and 2 on the lower plate, wherein the 2 main risers on the upper plate are connected to the 2 risers on the lower plate, and the 2 auxiliary risers on the upper plate adopt the core climbing process to assist water inflow during pouring.
[0011] The overflow groove is designed at the edge of the lower mold plate on the side opposite to the pouring system.
[0012] Preferably, there are 7 exhaust rods in total, which are installed on the side of the upper mold away from the pouring system.
[0013] Preferably, the attached test block is installed at the thin wall outside the upper mold plate flange, and can replace the casting body for rapid metallographic testing.
[0014] Beneficial effects:
[0015] The above-mentioned technical scheme of the utility model has the following beneficial technical effects: multiple risers are used to fill the casting from different parts, which effectively improves the filling speed and shortens the flow distance of molten iron; a pouring system is designed on one side of the mold plate, and an exhaust and overflow device is designed on the side away from the pouring system, so that the casting tends to directionally solidify, which significantly improves the defects of cold shut, oxidation, air holes, sand holes, etc. of the new energy reducer housing casting, and greatly reduces the scrap rate of castings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the upper die of the new energy reducer housing casting tooling proposed in the utility model.
[0017] Figure 2 This is a schematic diagram of the lower die of the new energy reducer housing casting tooling proposed in the utility model.
[0018] Figure 3 This is a schematic diagram of the pouring system of the new energy reducer housing casting tooling proposed in the utility model.
[0019] Figure numerals: 1. upper mold; 2. hot riser; 3. pouring cup; 4. cold riser; 5. exhaust rod; 6. lower mold; 7. cold iron; 8. strong magnet; 9. positioning boss; 10. positioning hole. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0021] As attached Figure 1-3As shown, the utility model proposes a new energy reducer housing casting tool, comprising an upper template 1, an upper pattern 2, a pouring system 3, an attached test block 4, an exhaust rod 5, a lower template 6, a lower pattern 7, a sand core positioning core head 8, a pouring system 9, and an overflow trough 10. The pattern (2, 7) and the template (1, 6) are designed according to a 2:1 quantitative relationship, and the pattern (2, 7) and the template (1, 6) are made in an integral manner; the sand core positioning core head 8, the pouring system (3, 9), the exhaust rod 5, the attached test block 4 and the template (1, 6) are made separately, and the pouring system (3, 9) is installed on the upper and lower templates (1, 6) by bolts, the exhaust rod 5 and the attached test block 4 are installed on the upper template 1, and the sand core positioning core head 8 is installed on the lower template 6.
[0022] In this example, the pouring system includes a sprue 11, a runner 12, an ingrate 13, a ceramic filter 14 and risers (15, 16, 17), and is installed on one side of the template.
[0023] In this example, the ceramic filter 14 is installed at the bottom of the sprue 11 and connected to the runner 12, and plays the role of blocking slag and slowing down the flow during pouring.
[0024] In this example, there are 6 risers in total, of which riser 15 and riser 17 are located in the upper box of the mold, and riser 16 is located in the lower box of the mold. Riser 15 and riser 16 have a diameter of 65 mm and are the main water inlets of the mold. Riser 17 has a diameter of 50 mm and is the auxiliary water inlet. During the molten iron pouring process, the casting is filled from different parts, which effectively improves the filling speed.
[0025] In this example, the overflow trough 10 is designed at the edge of the template on the side of the lower template 6 opposite to the pouring system, which can collect the cold iron liquid in the initial stage of pouring and has a certain gas and slag collection function.
[0026] In this example, there are seven exhaust rods 5 installed on the side of the upper mold plate 1 away from the pouring system.
[0027] In this example, the attached test block 4 is installed on the thin wall outside the flange of the upper mold plate 1.
[0028] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.
Claims
1. A new energy reducer housing casting tool, including an upper template, a lower template, a pattern, a sand core positioning core head, a pouring system, an exhaust rod and an attached test block, characterized in that: The pattern and template are designed according to a 2:1 quantity relationship, and the pattern and template are manufactured as a whole; the sand core positioning core head, pouring system, exhaust rod, attached test block and template are manufactured separately, the pouring system is installed on the upper and lower templates by bolts, the exhaust rod and the attached test block are installed on the upper template, and the sand core positioning core head is installed on the lower template.
2. The new energy reducer housing casting tool according to claim 1 is characterized in that: The pouring system comprises a sprue, a runner, an ingate, a riser and a ceramic filter, and is installed on one side of the template.
3. The new energy reducer housing casting tool according to claim 2 is characterized in that: The ceramic filter is installed at the bottom of the sprue and connected to the cross runner, and plays a role in blocking slag and slowing down the flow during pouring.
4. The new energy reducer housing casting tool according to claim 2 is characterized in that: There are 6 risers in total, 4 on the upper plate and 2 on the lower plate. The 2 main risers on the upper plate are connected to the 2 risers on the lower plate. The 2 auxiliary risers on the upper plate use the core climbing process to assist water inflow during pouring.
5. The new energy reducer housing casting tool according to claim 1 is characterized in that: The overflow groove is designed on the edge of the lower mold plate on the side opposite to the pouring system.
6. The new energy reducer housing casting tool according to claim 1 is characterized in that: There are 7 exhaust rods in total, which are installed on the side of the upper mold away from the pouring system.
7. The new energy reducer housing casting tool according to claim 1 is characterized in that: The appendage test block is installed at the thin wall outside the upper plate flange.