Core finishing tool structure for starting line position of air inlet of cylinder sleeve

Abstract

The utility model relates to the technical field of casting, and discloses a cylinder sleeve air inlet starting line position core finishing tool structure which comprises a clamp, a seventh core and an eighth core are arranged in the clamp, air inlets are formed in the outer side of the seventh core and the outer side of the eighth core, a third core is arranged in the seventh core and the eighth core, and the seventh core and the eighth core are arranged in the third core. A first core, a second core, a fifth core and a sixth core are sequentially and fixedly connected to the third core from top to bottom, a fourth core is fixedly connected to the outer side of the fifth core, a core repairing positioning body is inserted into the seventh core and the eighth core, a rotating body is rotationally connected to the top of the core repairing positioning body, and a sample plate is fixedly connected to one end of the rotating body. According to the utility model, the core finishing positioning body is matched with the scraper in a rotating manner, so that interference is eliminated, automatic centering is realized, and the concentricity and dimensional accuracy of the sand core are improved. And putty smearing and drying are optimally matched, so that excessive gaps or poor finishing is avoided. And finally, the sand core is compact in structure and accurate in size, the blank qualification rate is greatly increased, and a guarantee is provided for subsequent production.

Description

TECHNICAL FIELD

[0001] The utility model relates to casting technical field especially relates to a cylinder liner air inlet start line position core dressing frock structure. BACKGROUND

[0002] The cylinder liner is one of important parts of the engine, and the air inlet start line of the cylinder liner is a size that must be ensured during processing. The size is formed by a casting blank, and is only allowed to be ground within a tolerance of plus or minus 1.524. The start line of the blank is controlled by a sand core 30° line, a sand core 45° line and a core assembly position. Factors affecting the air inlet start line include sand core deformation and core assembly position. Good control of the sand core air inlet start line is the key to determining the success or failure of the blank and processing. If the control is not good, it may cause the processed product to be scrapped, and may also affect the assembly quality of the subsequent process and the dimensional accuracy of the blank product. In addition, the rough surface of the sand core or too many grinding marks not only reduces the appearance quality of the blank, but also may cause the mechanical properties to be substandard, and even cause the scrap rate to rise.

[0003] In the traditional sand core trimming process, the trimming precision is insufficient due to improper control of the small interference or gap between the sand core and the matching part, which affects the assembly quality of the subsequent process and the dimensional accuracy of the blank product. In addition, the rough surface of the sand core or too many grinding marks not only reduces the appearance quality of the blank, but also may cause the mechanical properties to be substandard, and even cause the scrap rate to rise.

[0004] Therefore, a cylinder liner air inlet start line position core dressing frock structure is provided to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides a cylinder liner air inlet start line position core dressing frock structure, which aims to improve the low precision of the blank and the low processing yield.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a cylinder liner air inlet start line position core dressing frock structure, comprising a clamp, a core seven and a core eight are arranged inside the clamp, air inlets are formed in the outer sides of the core seven and the core eight, a core three is arranged inside the core seven and the core eight, the core three is sequentially fixedly connected with a core one, a core two, a core five and a core six from top to bottom, and the core five is fixedly connected with a core four on the outer side.

[0007] As a further description of the above technical scheme:

[0008] A core dressing positioning body is inserted into the core seven and the core eight, a rotating body is rotatably connected to the top of the core dressing positioning body, and a sample plate is fixedly connected to one end of the rotating body.

[0009] As a further description of the above technical scheme:

[0010] The core seven, the core eight and the core three are integrally formed.

[0011] As a further description of the above technical solutions:

[0012] The sample plate is divided into a 30° sample plate and a 45° sample plate.

[0013] As a further description of the above technical solutions:

[0014] The sample plate is located in the gap between the core seven and the core eight.

[0015] As a further description of the above technical solutions:

[0016] The outer side of the core repairing positioning body is provided with a taper structure, and the automatic centering function is realized through the contact of up and down movement with the inner wall of the sand core, so that the gap between the core repairing positioning body and the sand core cavity is ensured.

[0017] As a further description of the above technical solutions:

[0018] The bottom of the rotating body is provided with an adjusting mechanism for controlling the gap between the sample plate and the surface of the sand core, so that the gap value is ensured to be not more than 0.5mm during the core repairing process.

[0019] As a further description of the above technical solutions:

[0020] The working surface of the sample plate is subjected to special surface treatment and has anti-wear performance, and the excess core sand or putty is scraped off through multiple rotation operations, so that the surface of the repaired sand core is smooth and no sand particle is left.

[0021] The utility model has the following beneficial effects:

[0022] 1、In the utility model, the core repairing positioning body and the scraper are matched in rotation, the interference part is excluded, and the automatic centering is realized, so that the concentricity and size precision of the sand core are effectively improved. Combined with putty smearing and drying treatment, the matching effect of the sand core and the scraper is further optimized, and the defective products or waste products caused by excessive gap or poor trimming are avoided. The finally assembled sand core structure is compact and accurate in size, the qualified rate of the blank product is significantly improved, and reliable guarantee is provided for subsequent production processes. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A planar schematic view of a cylinder sleeve intake port initial line position core repairing tool structure is provided in the utility model;

[0024] Figure 2 A detail view of A in the middle; Figure 1

[0025] Figure 3 A structure schematic view of an intake port of a cylinder sleeve intake port initial line position core repairing tool structure is provided in the utility model;

[0026] ​Figure 4 A structure diagram of a clamp of a core repairing tool structure of a cylinder liner air inlet starting line position is provided in the utility model.

[0027] Legend:

[0028] 1, core one; 2, core two; 3, core three; 4, core four; 5, core five; 6, core six; 7, core seven; 8, core eight; 9, air inlet; 10, rotating body; 11, sample plate; 12, clamp; 13, core repairing positioning body. Specific embodiments

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Reference Figure 1 - Figure 4The utility model provides a kind of embodiment: a cylinder liner air inlet start line position core dressing tool structure, including clamp 12, clamp 12 inside is provided with core seven 7 and core eight 8, the outside of core seven 7 and core eight 8 is all set up air inlet 9, core three 3 is provided inside core seven 7 and core eight 8, core three 3 is sequentially fixedly connected with core one 1, core two 2, core five 5 and core six 6 from top to bottom, the outside of core five 5 is fixedly connected with core four 4, core seven 7 and core eight 8 inside are inserted with core dressing positioning body 13, the top of core dressing positioning body 13 is rotatably connected with rotator 10, and one end of rotator 10 is fixedly connected with sample plate 11.The clamp 12 is mainly used for fixing the whole core dressing tool, ensure the stability of sand core in the process of trimming.Chip clamp 12 is the support frame of the whole core dressing tool, is responsible for fixing and positioning the whole core dressing tool.It ensures that tool is stable in the working process, can withstand the force and vibration generated in the process of trimming.The outside of core seven 7 and core eight 8 is all set up air inlet 9, the effect of this air inlet 9 is to simulate airflow channel, provides necessary support for subsequent airflow guide and sand core actual function.Core three 3 is provided inside core seven 7 and core eight 8, and core three 3 is a core support component, is used for fixing the key position of internal sand core, ensures the position precision stability of each part in the process of core dressing.Core three 3 is sequentially fixedly connected with core one 1, core two 2, core five 5 and core six 6 from top to bottom.Among them, core seven 7 and core eight 8 are mainly responsible for the initial positioning of core dressing, and provide reference for the assembly of subsequent core dressing components.Core five 5 and core six 6 further reinforce the overall structure, ensure the durability and reliability of tool under high-precision core dressing operation.Core five 5 is fixedly connected with core four 4 outside, and this part mainly plays the role of external support and auxiliary positioning, further improves the adhesion between sand core and tool, avoids the deviation caused by vibration or operation error.Core seven 7 and core eight 8 are inserted with core dressing positioning body 13.The main role of core dressing positioning body 13 is to realize automatic positioning and error compensation in the process of core dressing.Its design includes taper structure, can realize the automatic alignment of sand core and tool by moving up and down, avoids the core dressing error caused by the inaccuracy of sand core position.In addition, the top of core dressing positioning body 13 is rotatably connected with rotator 10, and rotator 10 is an important component of power transmission in the process of core dressing, is used to drive the rotary motion of connected sample plate 11.One end of rotator 10 is fixedly connected with sample plate 11.Sample plate 11 is specially designed, is used to directly trim sand core surface and the position of air inlet 9 start line, and its working surface adopts wear-resistant material, can efficiently scrape off extra core sand or putty in rotation, while ensuring the smoothness and dimensional accuracy of trimmed surface.Through the rotary trimming of sample plate 11, the concentricity and dimensional accuracy of sand core can be significantly improved, to provide accurate and reliable basis for subsequent production process.Overall design meets the high-precision requirement of core dressing process through the precise cooperation of each component, guarantees the durability and operation convenience of tool, significantly improves the qualified rate of rough product and production efficiency.

[0031] Refer to Figure 1 -Figure 4 , the core seven 7, the core eight 8 and the core three 3 are integrally formed, the sample plate 11 is divided into 30° sample plate 11 and 45° sample plate 11, the sample plate 11 is located in the gap between the core seven 7 and the core eight 8, the outer side of the core positioning body 13 is provided with a taper structure, which realizes the automatic centering function through the up and down movement and the contact with the inner wall of the sand core, ensures that the core positioning body 13 is combined with the sand core cavity without gap, the bottom of the rotating body 10 is provided with an adjusting mechanism for controlling the gap between the sample plate 11 and the surface of the sand core, ensuring that the gap value during the core repairing process does not exceed 0.5mm, the working surface of the sample plate 11 is treated with special surface treatment and has anti-wear performance, and the excess core sand or putty is scraped off through multiple rotation operations, ensuring that the surface of the sand core after repairing is smooth and no sand particles are left, the sample plate 11 is located in the gap between the core seven 7 and the core eight 8, which is the part directly contacting with the surface of the sand core during the repairing process. In order to adapt to different repairing needs, the sample plate 11 has two different angles of 30° and 45°, the working surface of the sample plate 11 is treated with special surface treatment and has strong anti-wear performance, which can maintain high precision and performance in long-term use, avoid affecting the core repairing effect due to surface wear, and effectively scrape off the excess core sand or putty through multiple rotation operations, ensuring that the surface of the sand core after repairing is smooth and no residue is left, and the consistent surface flatness is maintained. The design of the sample plate 11 can effectively improve the quality of the sand core after repairing, ensuring that the accuracy requirements of the subsequent production process are met. The rotating body 10 is the power transmission part of the core repairing tool, which is responsible for transmitting the rotating power to the sample plate 11 to make it rotate and repair. The design of the rotating body 10 must ensure stability and smooth rotation to ensure uniformity and efficiency during the core repairing process.

[0032] Working principle: the repaired sand core is core seven 7 and core eight 8, before repairing the core, all high points need to be polished smooth and then placed on the working platform, and the jig 12 is tightly clamped, ensuring that the matching surface has no gap and becomes an integral whole, and the matching surface of the core assembly tool is repeatedly checked without high points. The repair core positioning body 13 is inserted from top to bottom, and the interference position is removed by polishing the matching surface up and down, and the automatic centering is realized when the lower end stop surface falls due to the taper effect, and it is placed into the inner cavity of the core seven 7 and the core eight 8, and the matching surface is checked without gap, and it is ensured that the three gaps, the lower end stop surface, the lower end surface and the upper end matching surface are flush without error. Then, the 30° scraper rotating body 10 is placed on the repair core positioning body 13, and the sample plate 11 is located in the gap between the core seven 7 and the core eight 8, and the interference core sand is checked and polished by rotating left and right, and it is ensured that the gap between the scraper and the sand core is ≤0.5mm, if the gap is ≥0.5mm, then the putty is smeared and dried by the spray gun, and then the scraper is continued to be rotated to remove the excess putty or core sand. When scraping sand, both hands are used, one hand holds the sand scraping plate slightly higher than the natural friction of the core sand, and if the rotation is stuck, it is rotated, and the other hand uses the sand cloth or sand wheel piece to polish along the trace of the scraper, and the scraper is rotated to follow, and the operation is repeated until the sand core surface and the scraper surface are completely matched, and the 30° surface repair (a total of four 30° air inlets 9) is completed. Then the 30° sample plate 11 is removed, the 45° sample plate 11 is installed, and the repair operation of the six 45° air inlets 9 is completed according to the same method. After the repair is qualified, the sand core needs to be painted, and the surface is required to be smooth without sand grain marks and repair marks; after the paint is dried, the sample plate 11 is repaired again, so that the sample plate 11 matches the sand core paint surface. Finally, the qualified sand core is assembled to the core three 3, the repair core positioning body 13 is 360, and the diameter of the same part of the core three 3 is consistent, so that the assembled sand core is concentric and the size is accurate, and the final output blank is qualified without waste caused by the above problems.

[0033] Finally, it should be pointed out that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A core dressing tool structure for a cylinder liner intake port starting line position, comprising a jig (12), characterized by: The clamp (12) is internally provided with a core seven (7) and a core eight (8), the outer side of the core seven (7) and the core eight (8) is provided with an air inlet (9), the core seven (7) and the core eight (8) are internally provided with a core three (3), the core three (3) is sequentially fixedly connected with a core one (1), a core two (2), a core five (5) and a core six (6) from top to bottom, and the core five (5) is fixedly connected with a core four (4) on the outer side.

2. The cylinder liner core-repairing tooling structure for the position of the intake port initiation line according to claim 1, characterized in that: The core seven (7) and the core eight (8) are internally inserted with a core repairing positioning body (13), the top of the core repairing positioning body (13) is rotatably connected with a rotating body (10), and one end of the rotating body (10) is fixedly connected with a sample plate (11).

3. The core reworking tooling structure for cylinder liner intake port starting line position according to claim 1, characterized in that: The core seven (7), the core eight (8) and the core three (3) are integrally formed.

4. The cylinder liner core-repairing tooling structure of claim 2, wherein: The sample plate (11) is divided into a 30° sample plate (11) and a 45° sample plate (11).

5. The core reworking tooling structure for cylinder liner intake port starting line position according to claim 2, characterized in that: The sample plate (11) is located in the gap between the core seven (7) and the core eight (8).

6. The cylinder liner core reworking tooling structure for an intake port starting line position according to claim 2, characterized by: The outer side of the core repairing positioning body (13) is provided with a taper structure, which realizes the automatic centering function through the up-and-down movement and the contact with the inner wall of the sand core, and ensures that the core repairing positioning body (13) is attached to the sand core cavity without gap.

7. The cylinder liner core reworking tooling structure for an intake port starting line position according to claim 2, characterized by: The bottom of the rotating body (10) is provided with an adjusting mechanism for controlling the gap between the sample plate (11) and the surface of the sand core, so that the gap value during the core repairing process is not more than 0.5mm.

8. The cylinder liner core reworking tooling structure of claim 2, wherein: The working surface of the sample plate (11) is subjected to special surface treatment, has wear resistance, and can scrape off the excess core sand or putty through multiple rotation operations, so that the surface of the repaired sand core is smooth and free of sand particle residues.

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