Reasonable application of standard parts The rational application principle of the standard parts in the hot core box can not only simplify the design and manufacture of the hot core box, but also improve the design and production speed of the hot core box, which can achieve twice the result with half the effort and the number of pieces. It is preferred to use structurally reliable components such as dimensions.
Because the hot box operating temperature is usually 2003000, the smaller standard parts are easily oxidized or loose and unreliable. The standard part with reliable size and structure means a cylindrical pin such as a diameter of 10 mm or more, and a bolt screw having a diameter of 8 mrn or more connected to the main body of the hot box. The preferred order for bolts or screws is the hexagon socket head cap bolt.
Replacing non-standard parts with standard parts A few non-standard parts on the hot box can be modified by standard parts to simplify the production of parts and shorten the production cycle and reduce the production cost. For example, the upper top core rod used in the horizontal split box has a conventional structure 13 which is cumbersome in production process, long in cycle, and high in cost. With the structure of 1, it can be modified by two standard parts to overcome the structural defects.
3The traditional structure is unreasonable. The new structure is reasonable. 1. From 16 nuts 2. Reasonable application of the standard parts of the factory modified with Bolt River 1670. More accessories on the hot core box. The non-standard parts of the in vitro can be designed as factory standard parts. The form will be available at that time. This is especially important for professional foundry mold shops and foundries that use a large number of hot core box core processes. This not only simplifies the design and manufacture of the hot core box, but also enables the design and manufacture of the hot core box to achieve a rapid effect to a certain extent.
The parts of the hot-core box accessory that can realize the standard parts of the factory generally have the following types of box-pin-pin box pin sleeves and their press-plate lengthening box pins.
The top and bottom core plates of the horizontal box hot box, the bottom frame of the core drop core shooting method, and the moving frame of the core core type core shooting machine.
The open box bracket of the multi-opening hot box.
The top core type core take-off method, such as the 03-foot-2 lower top core plate, returns to the square-shaped groove block and its guide rod.
The lower top core rod return guide rod of the horizontal split box and the open box rod for the mold opening of the 03 core shooter.
Make a series of factory standard parts for use in the design of the hot box. For the 6 types of parts, the length and length of the diameter are affected by the main body of the hot box, and it is required according to the condition of each hot box. For such parts, they can be listed as standard parts of 15 types of parts, and filled in according to the actual conditions of each hot box.
According to the above method, after the establishment of the standard sample of the hot core box factory, the design and production speed of the hot core box can be simplified and accelerated, and the hot box manufacturing factory can save more wood mold costs and reduce the production cost. the goal of.
In the design of the hot box, in addition to the standard parts and factory standards, as far as possible, the non-standard parts on the same type of core shooting machine should be used as much as possible to make the same type of core. Use as many common parts as possible in castings of the same or similar products, rather than special parts. This optimized design method is also very important and has good technical and economic effects for the simplification and rapidization of the design and manufacture of the hot box.
For example, our factory's 61056108 two six-cylinder crankcase sand core core box and front and rear end face hot box, each set of hot core box to make two different sand cores, these hot core boxes are only set in two sets 22 B The 864 hot core box shooting machine is shot on the top core board and water-cooled sand shooting board. In the design and manufacture of the hot core box, it is required to achieve its versatility. As a result, the two core shooting machines meet the core requirements of the larger batch of crankshaft cores of two different cylinder blocks. Due to the versatility of the upper core plate and the water-cooled sandblasting plate, the replacement of the hot core box is fast.
Not only that, but our factory also has a cylinder cylinder block 40 to share the upper core plate and the water-cooled sand shooting plate with the front and rear end sand cores of the 61056108 cylinder block. This not only reduces the core making efficiency of the core shooting machine of the hot box manufacturing plant, but also has many advantages.
In order to achieve the effect of the above-mentioned cylinder core type castings corresponding to the core core hot box sharing the upper core board and the water-cooling core board, the key skill in the process is that the sand core adopts a smooth arrangement.
Water-cooled sand-blasting board production process and materials For the horizontal split-box hot-core box common parts, there is also a more important part of the water-cooled sand-blasting board production process and materials worthy of discussion.
The traditional materials and processes for this part are cast iron. In fact, the part is made of cast iron, which is not only costly, has a long cycle, but also has poor versatility. The part is welded with 2 carbon steel materials, which can reduce the production cost and shorten the production cycle, and can also make the hot box 1. square steel side plate 2. lower cover 3. upper cover 4. water barrier 5 The advantages of the nozzle seat, even the water-cooled sandblasting board with different sand cores can be modified. For example, our factory has used the 6100 cylinder block water jacket sand core hot core box water-cooled sand shooting board to be modified for 40 cylinder body cam chamber sand. The core hot box cold shot sand plate has better versatility than the traditional cast iron water cooled sand board.
For the standard parts and common parts of the hot box, some large factories have done a good job, and many large factories have their own mold design manuals, but many manufacturers are far from the reasonable application level discussed in this paper. In order for the hot core box to meet the reasonable application of the above-mentioned standard parts and common parts, it is necessary to have a designer who has rich design experience for the hot box, and another aspect requires the factory to have a suitable management mechanism. Therefore, the standard parts and the common parts in the design of the hot box can be made as reasonable as possible, and finally the purpose of improving the production efficiency and reducing the cost for the mold hot box manufacturing plant and the casting production factory is achieved.
Mold and cold box also have a fixed reference value.
The name of the joint venture is Peking University Beijing Machine Tool Co., Ltd. The registered capital is RMB 108.88 million, which is equivalent to about 100 million yen. The capital contribution is North NC. It is funded by cash in 49. It is funded by cash and technology. 5 The chairman of the board is the general manager of North NC.
The joint venture's factory was rebuilt in the Linhe Industrial Development Zone, Shunyi District, Beijing, and the most advanced equipment management system was introduced. The factory has an annual output of 700 units and gradually reaches the target of one unit.
The joint venture established a new factory, introduced advanced equipment technology, established an advanced management system, laid a new advantage, and effectively utilized the technology manufacturing and sales of the two companies in the North CNC Daxie to make extensive progress in the development of China's manufacturing industry. Contribution.
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