Grinding tool for conical sealing surface

Abstract

The utility model provides a grinding tool for a conical sealing surface and belongs to the technical field of grinding tools. Comprising a grinding connecting rod, and the grinding connecting rod is sleeved with a positioning flange used for being in positioning fit with a hole port of an engine sealing hole in an engine. The lower end of the grinding connecting rod is fixedly connected with a grinding body, and the middle of the grinding body is provided with an outer conical grinding face used for being matched with a hole inner conical face at the bottom of an engine sealing hole. An upper positioning surface is arranged at the upper part of the grinding body; the upper positioning surface is matched with a hole inner circular surface I positioned at the upper part of a hole inner conical surface in an engine sealing hole for positioning during use; and a lower positioning surface is arranged at the lower part of the grinding body, and is matched with a hole inner circular surface II positioned at the lower part of the hole inner conical surface in the engine sealing hole for positioning during use. The two positioning faces arranged on the upper portion and the lower portion of the outer conical grinding face are used for positioning and matched with the positioning flange to form limitation of the three positioning faces, the multiple positioning structures can prevent the grinding faces from deviating, and grinding efficiency and precision are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding tools, and in particular relates to a grinding tool for a conical sealing surface. Background Art

[0002] For various types of engines, there are a large number of structures that need to be sealed through the contact surface of parts, and the conical surface seal makes the contact surface narrower. Under a certain sealing force, its sealing pressure ratio is greatly increased, making it easier to achieve the sealing requirements. Therefore, the structure that uses the conical surface of the parts to seal is widely used in the engine. For large-scale engines, there are higher requirements for the pressure of the fluid in the sealing system, and when the part size is large, the processing accuracy decreases. Usually, the conical sealing surface needs to be ground after processing to make the sealing surface meet the target requirements.

[0003] Traditional grinding tool structure such as Figure 3 and 4 As shown, the grinding tool is usually positioned using the conical surface of the grinding body 4' and the positioning flange above the sealing hole. After being installed in the sealing hole and positioned, the upper cross bar is rotated for grinding to achieve the conical surface sealing requirement.

[0004] Defects of traditional grinding tools: Traditional grinding tools usually use the grinding body conical surface and the positioning flange above the sealing hole to position the grinding tool. This solution can achieve sealing after grinding when the sealing hole is short and the original cone shape and position tolerance after processing is small. However, when the distance between the grinding surface and the positioning flange is long or the dimensional deviation of the cone surface after processing is large, grinding will cause the cone surface deviation to become larger and larger, and ultimately the sealing cannot be achieved or even the parts where the sealing surface is located are damaged. Therefore, it is necessary to propose improvements. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a grinding tool for a conical sealing surface. The utility model aims to improve the positioning structure of the grinding tool so that the grinding tool can achieve the conical surface sealing requirement by grinding more simply when the sealing hole is long and the processing accuracy is relatively low.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A grinding tool for a conical sealing surface comprises a grinding connecting rod, the grinding connecting rod is provided with a positioning flange for positioning and matching with the hole end of an engine sealing hole on the engine; a grinding body is fixedly connected to the lower end of the grinding connecting rod, and an outer conical grinding surface is provided in the middle of the grinding body for matching with the inner conical surface of the bottom of the engine sealing hole for grinding it; an upper positioning surface is provided on the upper part of the grinding body, and the upper positioning surface is matched with the inner circular surface I of the engine sealing hole at the upper part of the inner conical surface for positioning when in use; a lower positioning surface is provided on the lower part of the grinding body, and the lower positioning surface is matched with the inner circular surface II of the engine sealing hole at the lower part of the inner conical surface for positioning when in use; the outer conical grinding surface is located between the upper positioning surface and the lower positioning surface.

[0008] To further define the above solution, the upper positioning surface is an outer cylindrical surface that is in clearance fit with the inner circular surface I of the hole; and the lower positioning surface is an outer cylindrical surface that is in clearance fit with the inner circular surface II of the hole.

[0009] As a further limitation of the above solution, a plurality of chip removal grooves are evenly distributed on the circumference of the outer conical grinding surface and the lower positioning surface, and each of the chip removal grooves is arranged along the axial direction.

[0010] As a further limitation of the above scheme, a nut connector is provided at the center of the lower end of the grinding body, and a nut is threadedly screwed on the nut connector.

[0011] To further define the above scheme, an internal threaded connection hole is provided at the center of the upper end of the grinding body, and an external threaded connection head is provided at the lower end of the grinding connection rod, and the external threaded connection head and the internal threaded connection hole are threadedly screwed together.

[0012] To further limit the above scheme, the outer circumferential surface of the positioning flange is a stepped cylindrical surface, the positioning flange is connected with a hole port of the engine sealing hole by a clearance fit, and the ground connecting rod is connected with a center hole of the positioning flange by a clearance fit.

[0013] To further limit the above scheme, the upper end of the grinding connecting rod is fixedly connected to a grinding connecting cross bar, the grinding connecting cross bar and the grinding connecting rod are perpendicular to each other, and the upper end of the grinding connecting rod is connected to the middle of the grinding connecting cross bar.

[0014] To further define the above scheme, a connecting inner hole is provided at the upper end of the grinding connecting rod, a connecting pin is provided in the middle of the grinding connecting cross bar, and the connecting pin is inserted into the connecting inner hole and fastened by a top screw.

[0015] The advantages of this utility model compared with the prior art:

[0016] 1. The grinding tool of this scheme adopts two positioning surfaces set at the upper and lower positions of the outer conical grinding surface for positioning, and cooperates with the positioning flange on the grinding connecting rod to form three positioning surface restrictions on the grinding body. Through multiple positioning, the deviation of the grinding surface is prevented, which provides a reliable means for the conical sealing surface to achieve the target sealing effect under higher pressure, and improves the efficiency and accuracy of grinding;

[0017] 2. This solution adds two upper and lower positioning surfaces for positioning, which can effectively ensure accurate positioning in holes with relatively high aspect ratios, prevent grinding position deviation caused by errors, ensure reliable positioning, and avoid leakage and parts damage caused by improper grinding.

[0018] 3. The grinding tool of this scheme is simple to operate and easy to install. It can effectively improve the degree of fit of the conical contact surface through grinding, improve the sealing effect of the contact surface, and provide reliable sealing for the contact parts under high pressure;

[0019] 4. Compared with traditional grinding tools, this solution adds chip grooves to improve grinding efficiency and prevent the sealing surface from being scratched by debris during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a grinding tool for a conical sealing surface provided by the utility model;

[0021] Figure 2 A schematic diagram of the structure of a grinding body in a grinding tool for a conical sealing surface provided by the utility model;

[0022] Figure 3 It is a structural schematic diagram of a grinding tool in the prior art;

[0023] Figure 4 It is a schematic diagram of the structure of the grinding body in the grinding tool of the prior art. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0026] See also Figure 1-4 , describe the embodiments of the present utility model in detail.

[0027] Example: Grinding tool for conical sealing surface, see Figure 1 and 2 As shown, it includes a grinding connecting rod 3, on which a positioning flange 2 is sleeved for positioning and matching with the hole port 6-4 of the engine sealing hole 6 on the engine; the lower end of the grinding connecting rod 3 is fixedly connected to a grinding body 4, and the middle part of the grinding body 4 is provided with an outer conical grinding surface 4-1 for adapting to the inner hole conical surface 6-1 at the bottom of the engine sealing hole 6 for grinding it; the upper part of the grinding body 4 is provided with an upper positioning surface 4-2, and the upper positioning surface 4-2 is adapted to the inner hole circular surface I6-2 of the engine sealing hole 6 at the upper part of the inner hole conical surface 6-1 for positioning when in use; the lower part of the grinding body 4 is provided with a lower positioning surface 4-3, and the lower positioning surface 4-3 is adapted to the inner hole circular surface II6-3 of the engine sealing hole 6 at the lower part of the inner hole conical surface 6-1 for positioning when in use; the outer conical grinding surface 4-1 is located between the upper positioning surface 4-2 and the lower positioning surface 4-3.

[0028] In this embodiment, positioning is performed by adding two upper and lower positioning surfaces on the upper and lower parts of the outer conical grinding surface of the grinding body. Combined with the original positioning flange, accurate positioning in holes with a relatively high length-to-diameter ratio can be effectively guaranteed, and grinding position deviation caused by errors can be prevented. The positioning is reliable and leakage and parts damage caused by improper position grinding can be avoided.

[0029] In a specific embodiment: the upper positioning surface 4-2 is an outer cylindrical surface with a clearance fit with the inner circular surface Ⅰ6-2 of the hole; the lower positioning surface 4-3 is an outer cylindrical surface with a clearance fit with the inner circular surface Ⅱ6-3 of the hole. The outer circular surface of the positioning flange 2 is a stepped cylindrical surface, the positioning flange 2 is connected with a clearance fit with the hole port 6-4 of the engine sealing hole 6, and the grinding connecting rod 3 is clearance fit with the center hole of the positioning flange 2.

[0030] The positioning and matching structures at the above three locations can ensure the positioning of the grinding body and improve the grinding quality.

[0031] In a specific embodiment: three chip removal grooves 4-4 are evenly distributed on the circumference of the outer conical grinding surface 4-1 and the lower positioning surface 4-3, and each of the chip removal grooves 4-4 is arranged along the axial direction.

[0032] Compared with traditional grinding tools, adding chip grooves can improve grinding efficiency and prevent the sealing surface from being scratched by debris during grinding.

[0033] In a specific implementation manner: a nut connector 4 - 5 is provided at the center of the lower end of the grinding body 4 , and a nut 5 is screwed and connected to the nut connector 4 - 5 .

[0034] By arranging a nut at the bottom of the grinding body, it is convenient to connect tools such as an electric wrench, which facilitates grinding and further improves the grinding efficiency.

[0035] In a specific embodiment: an internal threaded connection hole 4-6 is provided at the center of the upper end of the grinding body 4, and an external threaded connection head 3-1 is provided at the lower end of the grinding connecting rod 3, and the external threaded connection head 3-1 and the internal threaded connection hole 4-6 are threadedly screwed together.

[0036] The above structure realizes the fixed connection between the grinding connecting rod and the grinding body, and also facilitates the disassembly between the two, and is convenient for maintenance and replacement.

[0037] In a specific implementation manner: the upper end of the grinding connection rod 3 is fixedly connected with the grinding connection cross bar 1, the grinding connection cross bar 1 and the grinding connection rod 3 are perpendicular to each other, and the upper end of the grinding connection rod 3 is connected to the middle of the grinding connection cross bar 1.

[0038] A grinding connecting cross bar is provided in the above structure, and manual rotation of the grinding body can be realized by rotating the grinding connecting cross bar, which is convenient for operation.

[0039] In a specific embodiment: the upper end of the grinding connection rod 3 is provided with a connecting inner hole 3-2, and the middle of the grinding connection cross bar 1 is provided with a connecting pin 1-1, and the connecting pin 1-1 is inserted into the connecting inner hole 3-2 and fastened by a top screw.

[0040] In the above structure, the grinding connection cross bar and the grinding connection rod are connected by a pin shaft, which is convenient to connect, reliable to fix, and easy to disassemble and assemble.

[0041] This grinding tool uses two positioning surfaces located at the upper and lower positions of the outer conical grinding surface to position the grinding body, and after cooperating with the positioning flange on the grinding connecting rod, three positioning surface restrictions are formed. Multiple positioning prevents the grinding surface from deviation, providing a reliable means for the conical sealing surface to achieve the target sealing effect under higher pressure, and improving the efficiency and accuracy of grinding. When in use, grinding is performed by rotating the grinding connecting crossbar or by connecting an electric wrench or other tools after installing the nut below. There are multiple rotation methods, and the operation is convenient and reliable.

[0042] The utility model is a grinding tool with simple operation and reliable effect, which can obviously improve the grinding accuracy and efficiency and avoid the situation that the traditional grinding tools may cause damage to the parts, and has a positive effect on the sealing effect of the conical surface.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A grinding tool for a conical sealing surface, comprising a grinding connecting rod (3), characterized in that: The grinding connecting rod (3) is provided with a positioning flange (2) for positioning and matching with the hole end (6-4) of the engine sealing hole (6) on the engine; the lower end of the grinding connecting rod (3) is fixedly connected with a grinding body (4); the middle part of the grinding body (4) is provided with an outer conical grinding surface (4-1) for matching with the inner conical surface (6-1) of the bottom of the engine sealing hole (6) for grinding the same; the upper part of the grinding body (4) is provided with an upper positioning surface (4-2), and the upper positioning surface (4-2) is provided with a plurality of holes (6-4) at the bottom of the engine sealing hole (6). -2) is adapted to be positioned with the inner circular surface I (6-2) of the engine sealing hole (6) located above the inner conical surface (6-1) of the hole when in use; a lower positioning surface (4-3) is provided at the lower part of the grinding body (4); the lower positioning surface (4-3) is adapted to be positioned with the inner circular surface II (6-3) of the engine sealing hole (6) located below the inner conical surface (6-1) of the hole when in use; the outer conical grinding surface (4-1) is located between the upper positioning surface (4-2) and the lower positioning surface (4-3).

2. The grinding tool for a tapered sealing surface according to claim 1, characterized in that: The upper positioning surface (4-2) is an outer cylindrical surface that is clearance-matched with the inner circular surface I (6-2) of the hole; and the lower positioning surface (4-3) is an outer cylindrical surface that is clearance-matched with the inner circular surface II (6-3) of the hole.

3. The grinding tool for a tapered sealing surface according to claim 1, characterized in that: A plurality of chip removal grooves (4-4) are evenly distributed on the circumference of the outer conical grinding surface (4-1) and the lower positioning surface (4-3), and each chip removal groove (4-4) is arranged along the axial direction.

4. The grinding tool for a tapered sealing surface according to claim 1, characterized in that: A nut connector (4-5) is provided at the center of the lower end of the grinding body (4), and a nut (5) is screwed and connected to the nut connector (4-5) through a thread.

5. The grinding tool for a tapered sealing surface according to claim 1, characterized in that: An internal thread connection hole (4-6) is provided at the center of the upper end of the grinding body (4), and an external thread connection head (3-1) is provided at the lower end of the grinding connection rod (3). The external thread connection head (3-1) and the internal thread connection hole (4-6) are threadedly screwed together.

6. The grinding tool for a tapered sealing surface according to claim 1, characterized in that: The outer cylindrical surface of the positioning flange (2) is a stepped cylindrical surface, the positioning flange (2) is connected with a hole port (6-4) of the engine sealing hole (6) by clearance fit, and the grinding connecting rod (3) is connected with a center hole of the positioning flange (2) by clearance fit.

7. The grinding tool for a tapered sealing surface according to claim 1, characterized in that: The upper end of the grinding connection rod (3) is fixedly connected to a grinding connection cross bar (1); the grinding connection cross bar (1) and the grinding connection rod (3) are perpendicular to each other; the upper end of the grinding connection rod (3) is connected to the middle of the grinding connection cross bar (1).

8. The grinding tool for a tapered sealing surface according to claim 7, characterized in that: The upper end of the grinding connection rod (3) is provided with a connection inner hole (3-2), and the middle of the grinding connection cross bar (1) is provided with a connection pin shaft (1-1), and the connection pin shaft (1-1) is inserted into the connection inner hole (3-2) and fastened by a top screw.

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