A machining device for electro-hydraulic servo valve jet disc parts

Abstract

The utility model relates to the technical field of electro -hydraulic servo valve manufacturing, especially to a kind of machining device of electro -hydraulic servo valve jet disc class parts.The machining device includes: grinding block, grinding platform, wherein: the grinding block whole is rotary step shaft part, the small end surface center of grinding block is set for the part positioning slot of fixed part, part positioning slot is outward and upward and downward and left and right four directions and is set air guide groove;Air guide groove is connected with the outside world to part positioning slot;The large end outer circle of grinding block is used for handheld grinding;The part in part positioning slot is higher than the small end surface of grinding block;Grinding platform has the grinding plane for grinding part.

Description

Technical Field

[0001] This utility model relates to the technical field of electro-hydraulic servo valve manufacturing, and in particular to a processing device for electro-hydraulic servo valve jet disc-type parts. Background Technology

[0002] Electro-hydraulic servo valves are key components in aircraft control systems for converting electrical signals into mechanical signals. The jet plate is a crucial part of the amplification stage of the electro-hydraulic servo valve. This component primarily ejects jets into two receiving chambers through the jet cavity, working in conjunction with the reaction rod to achieve amplification. The difference in flatness between the two end faces of the jet plate and the radius of the cavity corners affect the cross-sectional area of ​​the jet cavity's jet outlet, thus influencing its jetting performance.

[0003] When processed using traditional methods, jet disk-type parts require skilled workers to ensure that the parallelism of the two end faces is 0.003mm, the flatness is 0.003mm, and the radius of the cavity edge is 0.02mm after the outer wire cutting is completed. This requires a high level of skill from the workers, makes the subsequent assembly and adjustment difficult, and results in low assembly and adjustment efficiency, which cannot meet the requirements of normal production. Utility Model Content

[0004] The purpose of this invention is to provide a processing device for jet disk-type parts that has low skill requirements, good control of geometric tolerances, stable and reliable quality, and can meet the needs of small-batch production.

[0005] A machining apparatus for electro-hydraulic servo valve jet disc-type parts is proposed, comprising:

[0006] Grinding blocks and grinding platforms, among which:

[0007] The grinding block is a rotary stepped shaft component. A part positioning groove for fixing the part is set at the center of the small end face of the grinding block. Air guide grooves are opened in four directions: up, down, left, and right. The air guide grooves connect the part positioning groove to the outside. The outer circle of the large end of the grinding block is used for hand-held grinding. The part in the part positioning groove is higher than the small end face of the grinding block.

[0008] The grinding platform has a grinding surface for grinding parts.

[0009] The depth of the air guide groove is greater than the depth of the part positioning groove.

[0010] The positioning groove of the grinding block is fitted with the part with a clearance to achieve part positioning;

[0011] After the grinding block is loaded into the part, it is placed on the grinding surface of the grinding platform, and the part is pressed against the grinding surface by its own weight.

[0012] The grinding platform has a lattice microtexture on its grinding surface, which serves to store grinding paste.

[0013] The grinding block is a solution-treated stainless steel grinding block;

[0014] The grinding platform is made of cast iron.

[0015] Use a machining device to perform planar grinding on both ends of the part, ensuring that the flatness of the two center surfaces is less than 0.003mm and the parallelism is less than 0.003mm, leaving a machining allowance of 0.002mm on both surfaces; and then rivet the planar ground parts together.

[0016] Beneficial effects:

[0017] In this utility model embodiment, force is applied evenly to the surface of the part during the flat grinding process of the jet plate, ensuring the machining accuracy of the part. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a processing device for an electro-hydraulic servo valve jet disc type part according to this utility model;

[0020] Figure 2 This is a front view of the grinding block 1 of this utility model;

[0021] Figure 3 This is a cross-sectional view and enlarged view of the grinding block 1 of this utility model;

[0022] Figure 4 This is the front view of the grinding platform 2 of this utility model;

[0023] Figure 5 This is a schematic diagram illustrating the use of the processing device of this utility model;

[0024] Among them: grinding block-1, grinding platform-2. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0027] It should be noted that, where there is no conflict, the embodiments of this utility model and the features therein can be combined with each other, and the various embodiments can be referenced and cited in turn. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of a processing device for a jet disk-type part according to an embodiment of the present invention. Figure 5 This is a schematic diagram illustrating the use of a flat grinding mill in a processing device according to an example of this utility model.

[0029] refer to Figure 1-4 The processing device for the jet disk may include: a grinding block 1 and a grinding platform 2. The jet disk includes one jet cavity and two receiving cavities.

[0030] Among them, the grinding block 1 is a rotary stepped shaft part, mainly including part positioning groove 101, air guide groove 102, and outer circle 103;

[0031] The grinding platform 2 has a grinding surface 201;

[0032] The positioning groove 101 of the grinding block 1 is fitted with the jet disk part with a clearance to achieve part positioning;

[0033] After the grinding block 1 is loaded into the part, it is placed on the grinding surface 201 of the grinding platform 2 and pressed between the part and the grinding surface 201 by its own weight.

[0034] The grinding platform 2 and the grinding plane 201 have a lattice microtexture and serve to store grinding paste.

[0035] All grinding blocks 1 are made of solution-treated stainless steel;

[0036] Grinding platform 2 is made of cast iron, which provides good stability.

[0037] This utility model proposes a processing method for jet disk-type parts and a processing device for jet disk-type parts, characterized in that the processing method includes the following steps:

[0038] Part manufacturing process:

[0039] Rolling - cutting - heat treatment and leveling - flat grinding of both ends - drilling wire holes - wire cutting shape - light grinding of both ends to remove burrs.

[0040] This utility model provides a processing device for jet disk-type parts, the steps of which are as follows:

[0041] S11 proposes increasing the number of positioning grooves for jet disc-type parts, arranging them in a ring shape, and adding elastic gaskets. This device has the following characteristics:

[0042] 1. The number of positioning grooves for jet disk-type parts is increased by grinding block 1, arranged in a ring shape, and connected by air guide grooves;

[0043] 2. When grinding flat parts, group processing can be achieved, and the height difference of the parts can be eliminated by using elastic shims;

[0044] 3. The device has a simple structure and low barrier to entry;

[0045] S12, apply grinding oil to the array positioning groove and install elastic pads and jet disk parts.

[0046] S13, apply polishing oil and W7 diamond polishing paste evenly to the polishing surface 201 of the polishing platform 2.

[0047] S14, the square part is pressed firmly onto the grinding surface 201 of the grinding platform 2 by the grinding pressure block 1, and the operator holds the outer diameter 103, as shown. Figure 5 Push the grinding block 1 along the figure-eight trajectory as shown; after pushing it 2 times, flip the part over and repeat the above process. Remove the part and use a height gauge to measure its dimensions.

[0048] S15 repeats the operation until the part thickness falls within the tolerance, completing the machining process.

[0049] Extensive testing has proven that the cage-type jet plate processing device has a simple structure and significantly improves processing quality. Currently, this jet plate processing device has been applied to the welding processing of various types of jet plates.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. A processing apparatus for electro-hydraulic servo valve jet disc-type parts, characterized in that, include: Grinding block (1), grinding platform (2), wherein: The grinding block (1) is a rotary stepped shaft part. A part positioning groove (101) for fixing the part is provided at the center of the small end face of the grinding block (1). The part positioning groove (101) has air guide grooves (102) in four directions: up, down, left and right. The air guide grooves (102) connect the part positioning groove (101) to the outside. The outer circle (103) of the large end of the grinding block (1) is used for hand-held grinding. The part in the part positioning groove (101) is higher than the small end face of the grinding block (1). The grinding platform (2) has a grinding surface (201) for grinding parts.

2. The processing apparatus for jet disc-type parts according to claim 1, characterized in that, The depth of the air guide groove (102) is greater than the depth of the part positioning groove (101).

3. The processing apparatus for jet disc-type parts according to claim 1, characterized in that, The positioning groove (101) of the grinding block (1) is fitted with the part with a clearance to achieve part positioning; After the grinding block (1) is inserted into the part, it is placed on the grinding plane (201) of the grinding platform (2) and pressed between the part and the grinding plane (201) by its own weight.

4. The processing apparatus for jet disc-type parts according to claim 1, characterized in that, The grinding platform (2) and the grinding plane (201) have a lattice microtexture and serve to store the grinding paste.

5. The processing apparatus for jet disc-type parts according to any one of claims 1-4, characterized in that, in: The grinding block (1) is a stainless steel grinding block in a solid solution state; The grinding platform (2) is a cast iron platform.

6. The processing apparatus for jet disc-type parts according to claim 5, characterized in that, Use a machining device to perform planar grinding on both ends of the part, ensuring that the flatness of the two center surfaces is less than 0.003mm and the parallelism is less than 0.003mm, leaving a machining allowance of 0.002mm on both surfaces; and then rivet the planar ground parts together.

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