CN112247100B - Method for processing cast product with isolated tooth-shaped structure - Google Patents
Method for processing cast product with isolated tooth-shaped structure Download PDFInfo
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- CN112247100B CN112247100B CN202011149161.9A CN202011149161A CN112247100B CN 112247100 B CN112247100 B CN 112247100B CN 202011149161 A CN202011149161 A CN 202011149161A CN 112247100 B CN112247100 B CN 112247100B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 238000009966 trimming Methods 0.000 claims abstract description 27
- 238000005266 casting Methods 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 19
- 238000004512 die casting Methods 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 238000003754 machining Methods 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 229910000861 Mg alloy Inorganic materials 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/2076—Cutting-off equipment for sprues or ingates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention discloses a method for processing a cast product with an isolated tooth-shaped structure, which comprises the following steps: and (3) obtaining a casting through die-casting forming, wherein the casting is provided with an isolated column, then the casting is transferred to a trimming die for trimming and removing a stub bar slag ladle, the trimming die is provided with a tooth pushing mechanism, the column on the casting is positioned on the tooth pushing mechanism, then the trimming die is closed, the stub bar slag ladle is trimmed and removed, and a tooth-shaped structure is processed at the same time to obtain a product, and the product is taken out. The invention has the beneficial effects that: the processing procedure of the tooth-shaped structure is combined with the procedure of trimming and removing the stub bar and the slag ladle, and on the trimming die, the tooth-shaped structure is processed on the workpiece through one-time die assembly action of the die, so that the trimming die is convenient and quick, the procedures are saved compared with the prior art, the production efficiency is improved, and the cost is reduced.
Description
Technical Field
The invention belongs to the technical field of casting processing, and particularly relates to a processing method of a cast product with an isolated tooth-shaped structure.
Background
The die casting technology is an important technology for producing magnesium alloy light metal workpieces, and has the advantages of one-step rapid forming, less workpiece machining allowance, high raw material recycling rate and the like. In order to meet the requirement of complicated product structure, the die-casting equipment and the process technology are continuously improved, and various workpieces with complicated shapes can be formed at high quality. After the workpiece is formed, the procedure of trimming and removing a stub bar slag ladle is carried out, and the procedure is generally finished on a punching die. According to the product design, machining may be required subsequently to complete the structure that cannot be machined in the front-end process. For example, a large magnesium alloy product for a certain automobile is provided with a column, and the column is designed with a tooth-shaped structure. According to prior art, the die-casting shaping goes out the work piece earlier, and the edge cutting removes stub bar sediment package after that, and rethread machine tooling mills out the tooth on the post one by one, and is comparatively time-consuming. Because the product size is big, in the turnover, get a process of putting, the time of every beat is all longer, and the equipment that milling process used is great, the price is high simultaneously. Thus, the production period is greatly prolonged by adding one milling procedure, the production efficiency is low, the cost of a single product is greatly increased, the profit rate of the product is low, and the market competitiveness is weak.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for processing a cast product having an isolated tooth-like structure.
The technical scheme is as follows:
the machining method of the cast product with the isolated tooth-shaped structure is characterized by comprising the following steps of:
step one, die casting: die-casting to obtain a casting with isolated pillars;
secondly, transferring the casting onto a trimming die for trimming and removing a stub bar slag ladle, wherein the trimming die comprises a lower fixed die component and an upper movable die component which are matched with each other, a workpiece cavity is formed in the lower fixed die component, and the casting is positioned and placed in the workpiece cavity;
a gear pushing mechanism is further arranged between the lower fixed die assembly and the upper movable die assembly;
step three, trimming and removing a stub bar slag ladle, and simultaneously processing a tooth-shaped structure: the upper movable die assembly moves downwards to be matched with the lower fixed die assembly, burrs, stub bars and slag ladles on the casting are cut off, the gear pushing mechanism is driven to work, and a toothed structure is synchronously processed on the column to obtain a product;
and fourthly, resetting the upper movable die assembly upwards, and taking out the product.
By adopting the method, the tooth pushing mechanism is added on the trimming die, so that the tooth-shaped structure is synchronously processed when the edges are trimmed and the stub bar slag ladle is removed, the working procedures are saved, the production takt is accelerated, the production efficiency is improved, and the cost of a single workpiece is reduced.
As a preferred technical scheme, the gear pushing mechanism comprises a positioning block, a toothed cutter, a self-resetting linear sliding mechanism and a reversing pushing mechanism;
the positioning block, the toothed cutter and the self-resetting linear sliding mechanism are all arranged on the lower fixed die assembly, the sliding part of the self-resetting linear sliding mechanism slides along the horizontal direction, and the reversing jacking mechanism is connected with the upper movable die assembly;
the positioning block is provided with a positioning hole and a toothed cutter through hole, the positioning hole is communicated with the inner cavity of the toothed cutter through hole, the toothed cutter matched with the positioning hole is movably arranged in the toothed cutter through hole in a penetrating manner, the toothed cutter is arranged along the motion direction of the sliding part of the self-resetting linear sliding mechanism, and the tail end of the toothed cutter is connected with the sliding part of the self-resetting linear sliding mechanism;
in the second step, the post is positioned in the positioning hole;
the reversing pushing mechanism and the serrated knife are respectively positioned at two ends of the sliding part of the linear elastic compression mechanism;
when the die is closed in the third step, the upper movable die assembly drives the reversing pushing mechanism, and the reversing pushing mechanism transmits driving force in a reversing manner to the self-resetting linear sliding mechanism, so that the toothed cutter is pushed to horizontally slide through the positioning hole along the toothed cutter through hole, and the toothed structure is punched on the column;
in the fourth step, when the upper movable die assembly is reset, the serrated knife retreats from the positioning hole.
By adopting the method, the downward driving force of the die assembly movement of the upper movable die assembly is transmitted to the tooth pushing mechanism by the reversing pushing mechanism, so that the tooth cutter is horizontally fed, the design is ingenious, and the trimming and tooth pushing actions are synchronously realized.
As a preferred technical scheme, the self-resetting linear sliding mechanism comprises a base, wherein a sliding sleeve is fixedly assembled on the base, a sliding block is arranged in the sliding sleeve, the sliding block is connected with a cutter holder after extending out of the sliding sleeve, and the cutter holder is fixedly connected with the tail end of the serrated knife;
a guide rod is movably arranged on the base in a penetrating mode, the guide rod is parallel to the sliding direction of the sliding block, one end of the guide rod penetrates through one side of the base and then is fixedly connected with the tool apron, the other end of the guide rod penetrates through the other side of the base and then is connected with a limiting block, and a buffer is arranged between the limiting block and the base;
a nitrogen spring is arranged between the cutter holder and the positioning block, a cylinder barrel of the nitrogen spring is fixedly connected with the cutter holder, and a piston rod of the nitrogen spring faces the positioning block;
in the third step, the reversing jacking mechanism jacks the sliding block, so that the serrated knife is pushed to feed.
By adopting the method, the forward movement amplitude of the serrated knife is limited by utilizing the characteristics of large bearing capacity and gradual change of elasticity in the stroke range of the nitrogen spring, the collision between the limiting block and the knife holder is prevented, the energy can be automatically stored, and the knife holder is pushed to retreat after the jacking force of the reversing jacking mechanism is removed.
As the preferred technical scheme, the reversing pushing mechanism comprises a push rod, a reversing block and a pushing wheel;
the push rod is vertically arranged, the upper end of the push rod is fixedly connected to the upper movable die assembly, and the lower end of the push rod faces the reversing block;
the reversing block is in a triangular shape, a first corner of the reversing block is hinged with the sliding sleeve, a second corner of the reversing block is provided with a shock-resistant wheel, a third corner of the reversing block is provided with the pushing wheel, and the wheel surface of the pushing wheel is opposite to the sliding block;
in the third step, the push rod moves downwards to push the reversing block during die assembly, and the reversing block rotates around the first angle of the reversing block so that the pushing wheel pushes the sliding block.
By adopting the method, the transmission of the driving power from the vertical direction to the horizontal direction is realized through the rotation of the reversing block, and the pushing force is transmitted through the pushing wheel, so that the pushing force is ensured to be along the advancing direction of the toothed cutter, and the side effects of structural deformation or damage and the like caused by the oblique impact force of the reversing block to the sliding block during rigid pushing are avoided.
As a preferred technical scheme, in the third step, when the reversing jacking mechanism jacks the sliding block, the nitrogen spring is compressed to store energy;
in the fourth step, when the upper movable die assembly resets, the nitrogen spring automatically recovers to push the tool apron, the serrated knife and the sliding block to retreat, so that the reversing block reversely rotates and resets.
Compared with the prior art, the invention has the beneficial effects that: the processing procedure of the tooth-shaped structure is combined with the procedure of trimming and removing the stub bar and the slag ladle, and on the trimming die, the tooth-shaped structure is processed on the workpiece through one-time die assembly action of the die, so that the trimming die is convenient and quick, the procedures are saved compared with the prior art, the production efficiency is improved, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a trimming mold;
FIG. 2 is an enlarged view of the portion m in FIG. 1;
FIG. 3 is a partial view of the mold with the tooth pushing mechanism in place;
FIG. 4 is a schematic structural view of the gear-pushing mechanism from a first perspective;
FIG. 5 is a schematic view of the tooth pushing mechanism from a second perspective;
FIG. 6 is a schematic structural view of the gear-pushing mechanism from a third perspective;
FIG. 7 is a schematic structural view of the gear-pushing mechanism at a fourth viewing angle, showing details of the spring housing, and moving the push rod and the reversing block away from the spring housing;
fig. 8 is a schematic view of a workpiece having a tooth structure.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example one
As shown in fig. 1 to 3, the trimming die comprises a lower fixed die component B and an upper movable die component a which are matched with each other, wherein a workpiece cavity is arranged on the lower fixed die component B, and a tooth pushing mechanism is further arranged between the lower fixed die component B and the upper movable die component a.
The gear pushing mechanism comprises a positioning block 12, a toothed cutter 11 and a self-resetting linear sliding mechanism. The positioning block 12 is provided with a positioning hole 13 and a toothed cutter through hole 14, inner cavities of the positioning hole 13 and the toothed cutter through hole 14 are communicated, the toothed cutter 11 matched with the toothed cutter through hole 14 movably penetrates through the toothed cutter through hole 14, the toothed cutter 11 is arranged along the movement direction of the sliding part of the self-resetting linear sliding mechanism, and the tail end of the toothed cutter 11 is connected with the sliding part of the self-resetting linear sliding mechanism. The pushing mechanism and the serrated knife 11 are respectively located at two ends of the self-resetting linear sliding mechanism, and the pushing mechanism pushes a sliding part of the self-resetting linear sliding mechanism, so that the serrated knife 11 is pushed to slide through the positioning hole 13. The serrated knife 11 is strip-shaped, the serrated knife 11 comprises a knife body, and two serrated blades 11a protruding towards one side of the knife surface are arranged on the knife body along the length direction of the knife body. The pushing mechanism is a reversing pushing mechanism, and the driving force direction of the reversing pushing mechanism is perpendicular to the movement direction of the serrated knife 11 and can also form an acute angle.
The self-resetting linear sliding mechanism comprises a jacking sliding mechanism, an elastic deformation mechanism and a cutter guide mechanism. The elastic deformation mechanism is arranged between the sliding part of the jacking sliding mechanism and the positioning block 12.
Specifically, as shown in fig. 3 to 7, the pressing and sliding mechanism includes a base 10, a sliding sleeve 4 is fixedly assembled on the base 10, a sliding block 5 is arranged in the sliding sleeve 4, the sliding block 5 extends out of the sliding sleeve 4 and is connected with a tool apron 6, and the tool apron 6 is fixedly connected with the tail end of the serrated knife 11.
The elastic deformation mechanism is a nitrogen spring 5, a cylinder of the nitrogen spring 5 is fixedly connected with the tool apron 6, and a piston rod of the nitrogen spring 15 faces the positioning block 12.
The utility model discloses a cutter, including base 10, blade holder 6, top pressure slide mechanism, cutter guide mechanism, this cutter guide mechanism includes guide bar 7, and this guide bar 7 activity is worn to establish on base 10 and with the slip direction of top pressure slide mechanism is parallel, and the one end of this guide bar 7 is worn out behind base 10 one side with blade holder 6 fixed connection, the other end is worn out be connected with stopper 8 behind the base 10 other side, this stopper 8 with be equipped with buffer 9 between the base 10, this buffer 9 is the hydraulic buffer. A hydraulic buffer is also arranged between the tool apron 6 and the base 10.
The pushing mechanism comprises a push rod 1, a reversing block 2 and a pushing wheel 3. The push rod 1 is perpendicular to the moving direction of the slide block 5, one end of the push rod 1 is a power end used for being connected with a power device, and the other end of the push rod 1 is a pushing end used for pushing the reversing block 2. Reversing block 2 is the triangle-shaped form, reversing block 2's first angle is fallen and is seted up in spacing groove 4a on the sliding sleeve 4 to it is articulated with spacing groove 4a, but reversing block 2's second angle rotation ground installs resistant wheel of dashing, reversing block 2's third angle is installed push-up wheel 3, push-up wheel 3's wheel face is just right nitrogen spring 5. When the push rod 1 pushes the impact-resistant wheel, the reversing block 2 rotates around the first angle of the reversing block to enable the pushing wheel 3 to push the sliding block 5.
Specifically, the positioning block 12 and the self-resetting linear sliding mechanism are both fixedly arranged on the lower fixed die assembly B, such as the lower die insert, through bolts. The upper end of the push rod 1 can be fixedly connected to the movable template.
Example two
As shown in fig. 8, a large magnesium alloy product for automobiles is provided with two isolated pillars, and the side walls of the pillars are designed with a tooth-shaped structure a. If the prior art is adopted, the die-cast workpiece is subjected to edge cutting, stub bar slag ladle removal and then the machining to mill teeth on the column one by one, so that the process is long, the beat is slow, and the production cost is high. Therefore, the production method is improved, and the processing of the tooth-shaped structure a is creatively combined with the procedure of trimming and removing the stub bar and the slag ladle which are essential in the production process of the casting.
A method for processing a cast product with an isolated tooth-like structure comprises the following steps:
step one, die casting: die-casting to obtain a casting, wherein the casting is provided with a column;
secondly, transferring the casting to a trimming die for trimming and removing a stub bar slag ladle, and positioning the casting in a workpiece cavity, wherein the column is positioned in the positioning hole 13;
step three, trimming and removing a stub bar slag ladle, and simultaneously processing a tooth-shaped structure: the upper movable die component A moves downwards to be matched with the lower fixed die component B, burrs, stub bars and slag ladles on the casting are cut off, the tooth pushing mechanism is driven to work, and a tooth-shaped structure is synchronously processed on the column to obtain a product;
the working principle of the gear pushing mechanism is as follows: when the die is closed, the push rod 1 moves downwards to push the reversing block 2 to rotate, so that the reversing block 2 is driven to rotate, the push wheel 3 pushes the sliding block 5, the toothed cutter 11 is pushed to move forwards horizontally, and a toothed structure a is punched on a column of a workpiece. At this time, the nitrogen spring 15 is compressed to store energy.
And fourthly, the upper movable die component A resets upwards to drive the driving push rod 1 to move vertically upwards, when the upper movable die component A moves upwards, the driving push rod 1 is driven to move vertically upwards, the nitrogen spring 15 automatically restores to push the sliding block 5 to reset, so that the toothed cutter 11 returns, the toothed cutter 11 retreats backwards from the positioning hole 13, and the product is taken out.
Therefore, the machining of the tooth-shaped structure is synchronously completed while the edge is cut and the stub bar slag ladle is removed, and the procedure of separately milling the tooth-shaped structure after the edge is cut and the stub bar slag ladle is removed is not needed.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (4)
1. A method of machining a cast product having an isolated tooth-like structure, comprising the steps of:
step one, die casting: die-casting to obtain a casting with isolated pillars;
secondly, transferring the casting onto a trimming die for trimming and removing a stub bar slag ladle, wherein the trimming die comprises a lower fixed die component (B) and an upper movable die component (A) which are matched with each other, a workpiece cavity is formed in the lower fixed die component (B), and the casting is positioned and placed in the workpiece cavity;
a tooth pushing mechanism is further arranged between the lower fixed die assembly (B) and the upper movable die assembly (A);
step three, trimming and removing a stub bar slag ladle, and simultaneously processing a dentate structure (a): the upper movable die assembly (A) moves downwards to be matched with the lower fixed die assembly (B), burrs, stub bars and slag ladles on the casting are cut off, the gear pushing mechanism is driven to work, and a toothed structure (a) is synchronously processed on the column to obtain a product;
fourthly, the upper movable die assembly (A) is reset upwards, and a product is taken out;
the gear pushing mechanism comprises a positioning block (12), a toothed cutter (11), a self-resetting linear sliding mechanism and a reversing pushing mechanism;
the positioning block (12), the serrated knife (11) and the self-resetting linear sliding mechanism are all mounted on the lower fixed die assembly (B), the sliding part of the self-resetting linear sliding mechanism slides along the horizontal direction, and the reversing jacking mechanism is connected with the upper movable die assembly (A);
a positioning hole (13) and a toothed cutter through hole (14) are formed in the positioning block (12), the inner cavities of the positioning hole (13) and the toothed cutter through hole (14) are communicated, the toothed cutter (11) matched with the toothed cutter through hole is movably arranged in the toothed cutter through hole (14) in a penetrating mode, the toothed cutter (11) is arranged along the movement direction of the sliding part of the self-resetting linear sliding mechanism, and the tail end of the toothed cutter (11) is connected with the sliding part of the self-resetting linear sliding mechanism;
in the second step, the post is positioned in the positioning hole (13);
the reversing pushing mechanism and the serrated knife (11) are respectively positioned at two ends of a sliding part of the linear elastic compression mechanism;
when the die is closed in the third step, the upper moving die assembly (A) drives the reversing pushing mechanism, the reversing pushing mechanism transmits driving force to the self-resetting linear sliding mechanism in a reversing manner, so that the toothed cutter (11) is pushed to horizontally slide through the positioning hole (13) along the toothed cutter through hole (14), and the toothed structure (a) is punched on the column;
in the fourth step, when the upper moving die assembly (A) is reset, the toothed cutter (11) retreats from the positioning hole (13).
2. The method of machining a cast product with isolated tooth-like structures according to claim 1, wherein: the self-resetting linear sliding mechanism comprises a base (10), a sliding sleeve (4) is fixedly assembled on the base (10), a sliding block (5) is arranged in the sliding sleeve (4), the sliding block (5) extends out of the sliding sleeve (4) and then is connected with a cutter holder (6), and the cutter holder (6) is fixedly connected with the tail end of the serrated knife (11);
a guide rod (7) is movably arranged on the base (10) in a penetrating mode, the guide rod (7) is parallel to the sliding direction of the sliding block (5), one end of the guide rod (7) penetrates through one side of the base (10) and then is fixedly connected with the tool apron (6), the other end of the guide rod penetrates through the other side of the base (10) and then is connected with a limiting block (8), and a buffer (9) is arranged between the limiting block (8) and the base (10);
a nitrogen spring (15) is arranged between the tool apron (6) and the positioning block (12), a cylinder barrel of the nitrogen spring (15) is fixedly connected with the tool apron (6), and a piston rod of the nitrogen spring (15) faces the positioning block (12);
in the third step, the reversing jacking mechanism jacks the sliding block (5), so that the serrated knife (11) is pushed to feed.
3. The method of machining a cast product with isolated tooth-like structures according to claim 2, wherein: the reversing pushing mechanism comprises a push rod (1), a reversing block (2) and a pushing wheel (3);
the push rod (1) is vertically arranged, the upper end of the push rod (1) is fixedly connected to the upper movable die assembly (A), and the lower end of the push rod faces the reversing block (2);
the reversing block (2) is in a triangular shape, a first corner of the reversing block (2) is hinged with the sliding sleeve (4), a second corner of the reversing block (2) is provided with a shock-resistant wheel, a third corner of the reversing block (2) is provided with the pushing wheel (3), and the wheel surface of the pushing wheel (3) is over against the sliding block (5);
in the third step, the push rod (1) moves downwards to push the reversing block (2) during die assembly, and the reversing block (2) rotates around the first angle of the reversing block to enable the pushing wheel (3) to push the sliding block (5).
4. The method of machining a cast product with isolated tooth-like structures according to claim 3, wherein: in the third step, when the reversing jacking mechanism jacks the sliding block (5), the nitrogen spring (15) is compressed to store energy;
in the fourth step, when the upper moving die assembly (A) is reset, the nitrogen spring (15) automatically recovers to push the tool apron (6), the toothed cutter (11) and the sliding block (5) to retreat, so that the reversing block (2) is reversely rotated and reset.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011149161.9A CN112247100B (en) | 2020-10-23 | 2020-10-23 | Method for processing cast product with isolated tooth-shaped structure |
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| CN202011149161.9A CN112247100B (en) | 2020-10-23 | 2020-10-23 | Method for processing cast product with isolated tooth-shaped structure |
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| CN112247100B true CN112247100B (en) | 2021-09-24 |
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| CN112371826A (en) * | 2020-10-23 | 2021-02-19 | 重庆博奥镁铝金属制造有限公司 | Magnesium alloy part tooth pushing mechanism and die |
| CN114905027A (en) * | 2022-05-13 | 2022-08-16 | 蔚来汽车科技(安徽)有限公司 | Method and apparatus for producing cast article |
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| CN210475227U (en) * | 2019-08-13 | 2020-05-08 | 上海环讯实业有限公司 | Composite die for cutting pouring gate and punching hole of thin-wall part |
| CN210676880U (en) * | 2019-09-29 | 2020-06-05 | 卡斯马汽车系统(上海)有限公司 | Die-casting side cut mould inboard is towards mechanism |
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| CN112247100A (en) | 2021-01-22 |
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