A hydraulic valve core precision positioning clamp based on heat energy deburring

Abstract

This utility model relates to the field of positioning fixture technology, specifically disclosing a precision positioning fixture for hydraulic valve cores based on thermal deburring. It includes a base, on which screws are uniformly fixedly mounted on the outer surface, and on the outer surface of a support plate, insertion seats are uniformly arranged. When processing hydraulic valve cores, this precision positioning fixture first inserts the support plate into the screws and aligns one end of the tightening expansion block with the insertion seat. Then, the hydraulic valve cores are inserted one by one into the insertion seats. Subsequently, the sleeve, top plate, and fastening nut are assembled and fixed. The support plate moves as the screws and fastening nut are tightened, allowing the tightening expansion block to insert into the insertion seat and deform, firmly fixing the hydraulic valve core within the insertion seat. This allows the fixture to fix multiple hydraulic valve cores, improving processing efficiency during thermal deburring.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, specifically a hydraulic valve core precision positioning fixture based on thermal deburring. Background Technology

[0002] In hydraulic systems, the hydraulic valve core is the core component for controlling fluid pressure, flow rate, and direction. The quality of the valve core surface (especially the presence of burrs) directly affects the system's working accuracy, sealing performance, and service life. During the machining process (such as turning, drilling, milling, grinding, etc.), burrs are easily generated at the valve port edge, the intersection of channels, and the root of threads due to tool cutting and material plastic deformation. If these burrs are not thoroughly removed, they can lead to problems such as system jamming, sealing failure, and accelerated wear. Common deburring methods include manual filing, sanding, and mechanical grinding.

[0003] However, these deburring methods are inefficient and the deburring effect is unstable. To solve the above problems, thermal deburring is used to remove burrs from the valve core. The high temperature and impact generated by the explosion remove the burrs. This means that the valve core needs to be fixed to ensure the effect of deburring. In the traditional hydraulic valve core machining and positioning, small positive three-jaw jacks are often used to support the inner hole, and the other end is supported by a center. This method can only clamp a single valve core when clamping and fixing it. This makes it impossible to clamp and fix a large number of valve cores, which means that thermal deburring of valve cores cannot be performed on a large number of valve cores. It is extremely inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic valve core precision positioning fixture based on thermal deburring, so as to solve the problem mentioned in the background art that it is impossible to clamp and fix a large number of hydraulic valve cores.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic valve core precision positioning fixture based on thermal deburring, comprising a base, a screw uniformly fixedly mounted on the outer surface of the base, and a top plate through which the outer surface of the screw is mounted, the top plate being in contact with the outer surface of the screw, a bearing plate through which the outer surface of the screw is mounted, the bearing plate being in contact with the outer surface of the screw, a plug-in seat uniformly arranged on the outer surface of the bearing plate, the inner side of the plug-in seat being inclined, a tightening expansion block uniformly mounted on the outer surface of the base, the tightening expansion block being in contact with the outer surface of the plug-in seat, a deformation groove formed on the outer surface of the bearing plate, the deformation groove being arranged around the plug-in seat, the plug-in seat and the tightening expansion block being concentrically designed, and a plug-in block uniformly arranged on the outer surface of the plug-in seat.

[0006] Preferably, the plug-in block and the plug-in socket are designed for plug-in connection, and the plug-in socket and the plug-in block are engaged, and the outer surface of the plug-in block is in contact with the outer surface of the valve core.

[0007] By adopting the above technical solution, valve cores of different diameters can be clamped and fixed after being installed into the socket by replacing the plug blocks of different thicknesses, so as to be suitable for clamping and fixing valve cores of different diameters.

[0008] Preferably, the outer surface of the plug block is provided with a guide surface, and the guide surface is designed to be inclined.

[0009] By adopting the above technical solution, the hydraulic valve core can be guided by the guide surface, so that the hydraulic valve core can be easily inserted into the socket.

[0010] Preferably, a sleeve is installed through the outer surface of the screw, and a fastening nut is threaded onto the outer surface of the screw, with the outer surface of the fastening nut fitting against the outer surface of the top plate.

[0011] By adopting the above technical solution, the top plate can be moved by tightening the screw and fastening nut, so that the top plate can push the sleeve and the sleeve can push the bearing plate. After the top plate is lowered, it can contact and restrict one end of the hydraulic valve core. While the height of the hydraulic valve core is restricted and clamped, the bottom of the hydraulic valve is also clamped at the same time, which improves the convenience of fixing the hydraulic valve core.

[0012] Preferably, the outer surface of the sleeve is in contact with the outer surface of the bearing plate, the screw and the sleeve are concentrically designed, and the outer surfaces of the sleeve and the screw are in contact.

[0013] By adopting the above technical solution, sleeves of different heights can be replaced according to the different heights of the hydraulic valve cores in order to fix the hydraulic valve cores of different sizes and heights.

[0014] Preferably, an anti-slip rubber sheet is fixedly installed on the outer surface of the top plate, and the outer surface of the anti-slip rubber sheet is respectively attached to the outer surface of the sleeve and the valve core.

[0015] By adopting the above technical solution, the elasticity of the anti-slip rubber sheet itself can reduce the probability of slippage and displacement after the valve core is clamped between the top plate and the bearing plate, thus reducing the probability of slippage due to impact when the hydraulic valve core is subjected to thermal deburring operations.

[0016] Preferably, the outer surface of the base is uniformly provided with threaded holes, and the threaded holes are threadedly connected to the tightening expansion block, and a nut block is fixedly provided on the outer surface of the tightening expansion block.

[0017] By adopting the above technical solution, the tool can be easily inserted and the tightening block can be turned through the nut block, so that the tightening block can be rotated out of the threaded hole. This allows the tightening block to be easily replaced after it wears out, improving the convenience of maintenance after long-term use.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the hydraulic valve core precision positioning fixture based on thermal deburring:

[0019] 1. When processing hydraulic valve cores, the bearing plate should first be inserted into the screw and one end of the tightening expansion block should be aligned with the socket. Then, the hydraulic valve cores can be inserted one by one into the socket. Subsequently, the sleeve, top plate, and fastening nut can be assembled and fixed one by one. The bearing plate can be moved as the screw and fastening nut are tightened, so that the tightening expansion block can be inserted into the socket and deformed to firmly fix the hydraulic valve core in the socket. This allows the fixture to fix multiple hydraulic valve cores, improving the processing efficiency during thermal deburring.

[0020] 2. When it is necessary to process hydraulic valve cores of different diameters, simply replace the plug blocks of different thicknesses and insert the plug blocks into the plug socket to change the diameter of the hydraulic valve core held by the plug socket. The use of the guide surface allows the hydraulic valve core to be guided when it is placed into the plug socket, improving the convenience of placing the hydraulic valve core and fixing hydraulic valve cores of different diameters. This enhances the convenience and flexibility of the positioning fixture.

[0021] 3. After inserting each hydraulic valve core into the socket, insert the sleeve into the screw, and insert the top plate and anti-slip rubber sheet into the screw. Then screw the fastening nut into the screw and tighten it, so that the bearing plate, sleeve, top plate and anti-slip rubber sheet can move synchronously. This allows the tightening expansion block to expand the socket and fix the hydraulic valve core as the bearing plate approaches. At the same time, the top plate and anti-slip rubber sheet clamp the hydraulic valve core again, allowing a large number of hydraulic valve cores to be fixed axially and radially at the same time. This greatly improves the firmness of the hydraulic valve core fixing and reduces the probability of displacement during heat deburring. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the base and top plate of this utility model;

[0023] Figure 2 This is an exploded three-dimensional structural diagram of the bearing plate and top plate of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the screw and tightening expansion block of this utility model;

[0025] Figure 4This is a cross-sectional three-dimensional structural diagram of the base and support plate of this utility model;

[0026] Figure 5 This is a cross-sectional perspective view of the plug-in base and the deformation groove of this utility model.

[0027] Figure 6 This is a three-dimensional exploded view of the nut block and threaded hole of this utility model.

[0028] Reference numerals in the attached drawings: 1. Base; 2. Screw; 3. Tightening expansion block; 4. Bearing plate; 5. Insertion seat; 6. Deformation groove; 7. Insertion block; 8. Guide surface; 9. Sleeve; 10. Top plate; 11. Anti-slip rubber sheet; 12. Fastening nut; 13. Nut block; 14. Threaded hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6 This utility model provides a technical solution: a hydraulic valve core precision positioning fixture based on thermal deburring, comprising a base 1, with screws 2 uniformly fixedly installed on the outer surface of the base 1, and a top plate 10 penetrating the outer surface of the screws 2, the top plate 10 being in contact with the outer surface of the screws 2, a bearing plate 4 penetrating the outer surface of the screws 2, the bearing plate 4 being in contact with the outer surface of the screws 2, and insertion seats 5 uniformly arranged on the outer surface of the bearing plate 4, the inner side of the insertion seats 5 being inclined, and tightening expansion blocks 3 uniformly installed on the outer surface of the base 1, the tightening expansion blocks 3 being... Block 3 fits against the outer surface of the plug-in seat 5. The outer surface of the bearing plate 4 is provided with a deformation groove 6, which is arranged around the plug-in seat 5. The plug-in seat 5 and the tightening expansion block 3 are concentrically designed. The outer surface of the plug-in seat 5 is evenly provided with plug-in blocks 7. The plug-in blocks 7 and the plug-in seat 5 are plugged into each other, and the plug-in seat 5 and the plug-in blocks 7 are engaged. The outer surface of the plug-in blocks 7 fits against the outer surface of the valve core. The outer surface of the plug-in blocks 7 is provided with a guide surface 8, which is inclined.

[0031] First, when using it, simply insert the bearing plate 4 into the outer surface of the screw 2, and let the bearing plate 4 fall down and engage with the tightening expansion block 3, so that the tightening expansion block 3 can be aligned with the plug seat 5. Then, select the plug block 7 of the corresponding thickness according to the specifications and size of the hydraulic valve core to be processed, and insert them one by one into the outer surface of the plug seat 5. With the guidance of the guide surface 8, the hydraulic valve core can be inserted into the interior of the plug seat 5 more easily. With the tightening expansion block 3 inserted into the plug seat 5, the plug seat 5 can generate a certain amount of deformation through the deformation groove 6, so that the fixture can clamp and fix a large number of hydraulic valve cores at the same time, which greatly improves the clamping capacity of the fixture, thereby improving the processing efficiency and effect of hydraulic valve cores.

[0032] A sleeve 9 is installed through the outer surface of the screw 2. A fastening nut 12 is threaded onto the outer surface of the screw 2, and the outer surface of the fastening nut 12 is in contact with the outer surface of the top plate 10. The outer surface of the sleeve 9 is in contact with the outer surface of the bearing plate 4. The screw 2 and the sleeve 9 are concentrically designed, and the outer surface of the sleeve 9 is in contact with the outer surface of the screw 2. An anti-slip rubber sheet 11 is fixedly installed on the outer surface of the top plate 10, and the outer surface of the anti-slip rubber sheet 11 is in contact with the outer surfaces of the sleeve 9 and the valve core, respectively.

[0033] Next, a sleeve 9 of the same height as the hydraulic valve core can be selected and inserted into the screw 2 in sequence. The top plate 10 and the anti-slip rubber sheet 11 are then inserted into the screw 2, and the fastening nut 12 is screwed into the screw 2. By screwing the fastening nut 12 into the screw 2, the sleeve 9, the top plate 10, and the anti-slip rubber sheet 11 are pushed to move together, so that the bearing plate 4 can move towards the base 1, and the top tightening block 3 is inserted into the plug seat 5. This allows the hydraulic valve core to be fixed axially and radially at the same time, which greatly improves the convenience and firmness of the fixture fixation and reduces the probability of deburring quality being reduced due to impact movement during deburring.

[0034] The outer surface of the base 1 is uniformly provided with threaded holes 14, and the threaded holes 14 are threadedly connected to the tightening expansion block 3. The outer surface of the tightening expansion block 3 is fixedly provided with a nut block 13.

[0035] Furthermore, when the tightening expansion block 3 becomes worn and unable to tighten the connector 5 after prolonged use, a tool can be inserted into the nut block 13 and loosened to remove the tightening expansion block 3 from the threaded hole 14, thus improving the convenience and practicality of the fixture during use and maintenance.

[0036] Working principle: When processing hydraulic valve cores, simply insert each hydraulic valve core into the connector 5, then insert the sleeve 9 into the screw 2, and then insert the top plate 10 and anti-slip rubber sheet 11 into the screw 2. Finally, tighten the fastening nut 12, allowing the bearing plate 4, sleeve 9, top plate 10, and anti-slip rubber sheet 11 to move simultaneously. This allows the tightening expansion block 3 to be inserted into the connector 5, deforming the connector 5 through the deformation groove 6. The connector 7 clamps the hydraulic valve cores, allowing a large number of hydraulic valve cores to be simultaneously fixed laterally and longitudinally by the fixture. Afterward, the sleeve 9, top plate 10, anti-slip rubber sheet 11, and fastening nut 12 can be removed one by one, and the bearing plate 4 can be loosened to reset the connector 5 and remove the hydraulic valve cores. This ensures that the hydraulic valve cores are firmly fixed inside the fixture during deburring, reducing displacement caused by impacts and improving the quality of deburring the hydraulic valve cores.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic valve core precision positioning fixture based on thermal deburring, comprising a base (1), wherein screws (2) are uniformly fixedly mounted on the outer surface of the base (1), and a top plate (10) is installed through the outer surface of the screws (2), wherein the top plate (10) is in contact with the outer surface of the screws (2), characterized in that: The outer surface of the screw (2) is fitted with a bearing plate (4), and the bearing plate (4) is in contact with the outer surface of the screw (2). The outer surface of the bearing plate (4) is uniformly provided with plug seats (5), and the inner side of the plug seats (5) is inclined. The outer surface of the base (1) is uniformly provided with tightening expansion blocks (3), and the tightening expansion blocks (3) are in contact with the outer surface of the plug seats (5). The outer surface of the bearing plate (4) is provided with a deformation groove (6), and the deformation groove (6) is arranged around the plug seats (5). The plug seats (5) and the tightening expansion blocks (3) are concentrically designed. The outer surface of the plug seats (5) is uniformly provided with plug blocks (7).

2. The hydraulic spool precise positioning clamp based on heat energy deburring according to claim 1, characterized in that: The plug-in block (7) and the plug-in seat (5) are designed for plugging in, and the plug-in seat (5) and the plug-in block (7) are engaged, and the outer surface of the plug-in block (7) is in contact with the outer surface of the valve core.

3. The hydraulic valve core precision positioning clamp based on heat energy deburring according to claim 1, characterized in that: The outer surface of the plug block (7) is provided with a guide surface (8), and the guide surface (8) is designed to be inclined.

4. The hydraulic spool precise positioning fixture based on heat energy deburring according to claim 1, characterized in that: A sleeve (9) is installed through the outer surface of the screw (2), and a fastening nut (12) is threaded on the outer surface of the screw (2), and the outer surface of the fastening nut (12) is in contact with the outer surface of the top plate (10).

5. The hydraulic spool precise positioning fixture based on heat energy deburring according to claim 4, characterized in that: The outer surface of the sleeve (9) is in contact with the outer surface of the bearing plate (4), the screw (2) and the sleeve (9) are concentrically designed, and the outer surfaces of the sleeve (9) and the screw (2) are in contact.

6. The hydraulic spool precise positioning fixture based on heat energy deburring according to claim 1, characterized in that: The outer surface of the top plate (10) is fixedly installed with an anti-slip rubber sheet (11), and the outer surface of the anti-slip rubber sheet (11) is in contact with the outer surface of the sleeve (9) and the valve core respectively.

7. The hydraulic valve core precision positioning clamp based on heat energy deburring according to claim 1, characterized in that: The outer surface of the base (1) is uniformly provided with threaded holes (14), and the threaded holes (14) are threadedly connected to the tightening expansion block (3), and the outer surface of the tightening expansion block (3) is fixedly provided with a nut block (13).

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