A tooling fixture for machining a hydraulic valve body

Abstract

The utility model relates to hydraulic equipment technical field especially relates to a tool fixture for processing hydraulic valve body is suitable for clamping the hydraulic valve body of cuboid shape, including box base, box, positioning track subassembly and a plurality of clamp blocks. Its beneficial effect is, and the positioning track subassembly spacing of box opposite side is different, and at least two tracks lateral interval arrangement of same side, can adapt to different length width size cuboid shape hydraulic valve body, need not for different specifications valve body alone design tool, expand the scope of application, reduce the tool investment cost of many specifications processing. The clamp block forms stable clamping position in row and column distribution, and the outer end face of most outside clamp block is recessed, exposes three surfaces to be processed of valve body, realizes "one time clamping processing many surfaces", reduces the clamping frequency, avoids the error caused by repeated positioning, guarantees the processing accuracy, reduces the waiting time of surface processing simultaneously, improves the processing efficiency per unit time.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, and in particular to a tooling fixture for machining hydraulic valve bodies. Background Technology

[0002] With the continuous advancement of hydraulic support control system technology, the requirements for the manufacturing level of electro-hydraulic control valve bodies are constantly increasing. In the manufacturing process, tooling fixtures, as an indispensable component, directly affect the machining accuracy, production efficiency, and environmental impact of the valve body. Traditional tooling fixtures primarily rely on standard hydraulic or mechanical clamping mechanisms. These mechanisms utilize hydraulic drive or mechanical locking to quickly fix the workpiece, and are mostly integrated into the processing equipment, suitable only for products with specific shapes and structures. Nowadays, with the continuous improvement of manufacturing processes and the development of intelligent manufacturing technology, traditional tooling fixtures, due to their low product compatibility, complex tooling change operations, extremely low clamping capacity, and environmental pollution risks, are gradually failing to meet the needs of modern production.

[0003] In the prior art, there is a traditional mechanical tooling fixture for machining the valve body of a hydraulic support control valve. This fixture uses a universal clamping mechanism, and the workpiece is positioned and fixed by manually adjusting the mechanical structure. This tooling fixture offers significant improvements over the traditional type in terms of manual operation and ease of tooling change. However, this design still has certain limitations in adapting to high-volume production cycles, compatibility with diverse products, and reducing environmental impact.

[0004] Therefore, there is an urgent need for a tooling fixture suitable for machining hydraulic valve bodies of various sizes. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a tooling fixture for processing hydraulic valve bodies, which solves the technical problem that the existing tooling fixtures cannot adapt to a variety of hydraulic valve bodies.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a tooling fixture for machining hydraulic valve bodies, suitable for clamping cuboid hydraulic valve bodies. It includes a housing base rotatably fixed to a machining platform, a housing fixed to the housing base, positioning rail assemblies, and multiple clamping blocks. Multiple positioning rail assemblies are arranged on opposite sides of the housing, with at least two positioning rail assemblies arranged laterally at intervals on the same side of the housing, and the spacing between positioning rail assemblies on different sides of the housing is different. Multiple clamping blocks are installed on each positioning rail assembly. All clamping blocks on the same side of the housing are distributed in rows and columns, with adjacent rows of clamping blocks forming a clamping position for the hydraulic valve body. The distance between the outermost two clamping blocks in a row is less than the length of the hydraulic valve body they clamp, and the outer surface of the clamping block can be positioned inward relative to the outer surface of the hydraulic valve body to expose three surfaces of the hydraulic valve body to be machined.

[0010] Optionally, the positioning track assembly includes a long, narrow track bar, a rotating shaft, multiple first sliders, and multiple second sliders. Multiple clamping blocks are mounted on the first sliders and / or the second sliders. A T-shaped groove extending along the length of the track bar is provided on one side surface. The groove includes a first slide rail section and a second slide rail section. The multiple first sliders and multiple second sliders are slidably connected to the first slide rail section and the second slide rail section, respectively, and are respectively limited to the two ends of the first slide rail section and the second slide rail section. The rotating shaft passes through the interior of the track bar along the length of the track bar. The rotating shaft is provided with a first threaded section and a second threaded section corresponding to the first slide rail section and the second slide rail section. The first threaded section and the second threaded section rotate in opposite directions. The first threaded section is driven to the multiple first sliders through multiple first connectors, and the second threaded section is driven to the multiple second sliders through multiple second connectors.

[0011] Optionally, a screwing part for driving the rotating shaft to rotate is fixed at the top of the rotating shaft. The screwing part protrudes from the top of the track bar and its cross-section is polygonal.

[0012] Optionally, both the first connector and the second connector include a threaded sleeve fitted around the periphery of the first threaded segment or the second threaded segment and a transmission rod connected to the first slider or the second slider, with the transmission rod fixedly connected to the periphery of the threaded sleeve.

[0013] Optionally, two first limiting blocks are fixedly provided at both ends of the first slide rail segment to form a limit at both ends of the first slide rail segment; two second limiting blocks are fixedly provided at both ends of the second slide rail segment to form a limit at both ends of the second slide rail segment.

[0014] Optionally, the first and second sliders have multiple threaded holes on their corresponding sides to the clamping block; the clamping block is divided into two first clamping blocks distributed at both ends of the positioning track assembly and a second clamping block distributed in the middle of the positioning track assembly, with an adjacent row of first clamping blocks and a row of second clamping blocks jointly clamping a hydraulic valve body; the first clamping block has multiple first threaded through holes and a first locking strip, the first locking strip extends into the slide groove and abuts against two adjacent first sliders or second sliders, when two adjacent first sliders or two adjacent second sliders abut against the first locking strip, the multiple first threaded through holes on the first clamping block are respectively aligned with the threaded holes on the two first sliders or two second sliders, and the first clamping block is threadedly connected to the two first sliders or two second sliders; the second clamping block has multiple second threaded through holes and a second locking strip, and a notch adapted to the second locking strip and perpendicular to the extension direction of the slide groove is opened in the middle of the track bar, when the second locking strip is located in the notch, the multiple second threaded through holes of the second clamping block are respectively aligned with the threaded holes on both sides of the notch, and the second clamping block is threadedly connected to the middle of the track bar.

[0015] Optionally, the tooling fixture for machining the hydraulic valve body also includes multiple strip-shaped side positioning plates. The multiple side positioning plates are respectively connected to one side and one end face of the three surfaces to be machined of the hydraulic valve body. Multiple threaded holes are spaced apart along the length of the side positioning plates. The two ends of the side positioning plates are respectively adapted to be threadedly connected to the same surface to be machined of two hydraulic valve bodies on the same side of the housing. The middle part of the side positioning plate is connected to the second fixture block, so that the two hydraulic valve bodies on the same side are aligned.

[0016] Optionally, the body includes a first side and a second side disposed opposite to each other; two positioning rail assemblies are fixed on the first side, and the distance between the two positioning rail assemblies is in the range of 250mm-300mm, so as to be suitable for machining hydraulic valve bodies with a length value in the range of 320mm-500mm; two positioning rail assemblies are fixed on the second side, and the distance between the two positioning rail assemblies is in the range of 450mm-490mm, so as to be suitable for machining hydraulic valve bodies with a length value in the range of 500mm-690mm.

[0017] Optionally, the top of the housing is also provided with a top cover of the same shape to cover the top surface of the housing, and both the top cover and the top of the housing have multiple threaded holes for threaded connection.

[0018] Optionally, multiple lifting rings for hoisting are fixed around the base of the enclosure.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are as follows: This utility model provides a tooling fixture for processing hydraulic valve bodies, suitable for clamping cuboid hydraulic valve bodies. It includes a box base that is rotatably fixed to a processing platform, a box body fixed to the box base, positioning rail assemblies, and multiple clamping blocks. Multiple positioning rail assemblies are provided on two opposite sides of the box body. At least two positioning rail assemblies on the same side of the box body are arranged laterally at intervals, and the spacing between the positioning rail assemblies on different sides of the box body is different. Multiple clamping blocks are installed on each positioning rail assembly. All clamping blocks on the same side of the box body are distributed in rows and columns. The clamping blocks in adjacent rows form a clamping position for a hydraulic valve body. The distance between the outermost two clamping blocks in a row is less than the length of the hydraulic valve body they clamp, and the outer side of the clamping block can be closer to the inner side of the hydraulic valve body to expose the three surfaces of the hydraulic valve body to be processed. Compared to existing technologies, the positioning track components on opposite sides of the valve body have different spacing, and at least two tracks on the same side are arranged laterally at intervals. This allows it to accommodate cuboid hydraulic valve bodies of different lengths and widths, eliminating the need for separate tooling designs for different valve body specifications, thus expanding its applicability and reducing the tooling investment costs for multi-specification processing. The fixture blocks are distributed in rows and columns to form a stable clamping position, and the outermost fixture block has its outer end face recessed, exposing the three surfaces of the valve body to be processed, achieving "multiple surfaces processed in one clamping." This reduces the number of clamping operations, avoids errors caused by repeated positioning, and ensures processing accuracy. At the same time, it reduces the waiting time for changing surfaces during processing, improving processing efficiency per unit time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the tooling fixture for machining hydraulic valve bodies according to the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the tooling fixture used for machining hydraulic valve bodies;

[0023] Figure 3 for Figure 1 A front view of the tooling fixture used for machining the hydraulic valve body;

[0024] Figure 4 for Figure 1 Rear view of the tooling fixture used for machining the hydraulic valve body;

[0025] Figure 5 for Figure 1 A schematic diagram of the structure of the first fixture block in the tooling fixture used for machining hydraulic valve bodies;

[0026] Figure 6 for Figure 1 A schematic diagram of the structure of the first fixture block in the tooling fixture used for machining hydraulic valve bodies;

[0027] Figure 7 for Figure 1 A schematic diagram of the positioning track assembly in the tooling fixture used for machining hydraulic valve bodies;

[0028] Figure 8 for Figure 1 A cross-sectional view of the positioning rail assembly in the tooling fixture used for machining hydraulic valve bodies, taken along the axis of rotation;

[0029] Figure 9 for Figure 1 A schematic diagram of the hydraulic valve body in the tooling fixture used for machining the hydraulic valve body;

[0030] Figure 10 for Figure 1 A schematic diagram of the hydraulic valve body in the tooling fixture used for machining the hydraulic valve body;

[0031] Figure 11 This is a schematic diagram of the top cover in Embodiment 2 of the tooling fixture for machining hydraulic valve bodies according to this utility model.

[0032] Explanation of reference numerals in the attached figures

[0033] 1: Hydraulic valve body; 2: Box base; 21: Lifting ring; 3: Box; 31: Top cover; 4: Positioning rail assembly; 41: Rail bar; 411: First slide rail section; 412: Second slide rail section; 42: Rotating shaft; 421: First threaded section; 422: Second threaded section; 43: First slider; 44: Second slider; 45: Tightening part; 5: Fixture block; 51: First fixture block; 511: First threaded through hole; 512: First locking strip; 52: Second fixture block; 521: Second threaded through hole; 522: Second locking strip; 6: Side positioning plate. Detailed Implementation

[0034] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1:

[0036] Reference Figures 1 to 8 This embodiment proposes a tooling fixture for machining hydraulic valve bodies 1, which can be adapted to clamp hydraulic valve bodies 1 of different sizes. Specifically, the tooling fixture for machining hydraulic valve bodies 1 in this embodiment includes a box base 2 that is rotatably fixed to the machining platform, a box 3 fixed to the box base 2, a positioning track assembly 4, and multiple clamping blocks 5, as detailed below.

[0037] In this embodiment, the hydraulic valve body 1 is formed from a rectangular raw material through processing. The length and thickness of different hydraulic valve bodies 1 vary. Furthermore, the hydraulic valve body 1 requires vertical milling, horizontal milling, rough grinding, and deep hole drilling on a processing platform. Thus, the hydraulic valve body 1, held by a tooling fixture, is processed in accordance with the corresponding cutting tool. The rotatable and fixed base 2 on the processing platform is existing technology and will not be described further here. The box 3 is a bifacial square box, entirely made of ductile iron QT-450 material, with uniformly chamfered sharp edges, forming an overall cuboid shape with four sides. Multiple positioning rail assemblies 4 are provided on opposite sides of the box 3, with at least two positioning rail assemblies 4 installed on each side of the box 3. These at least two positioning rail assemblies 4 are arranged laterally at intervals, extending along the length of the box 3. To ensure a more stable fixation, the end of the positioning rail assembly 4 near the base is threadedly connected to the base. The spacing between the at least two positioning rail assemblies 4 on different sides of the box 3 is different, suitable for fixing hydraulic valve bodies 1 of different sizes. Each positioning track assembly 4 is equipped with multiple clamping blocks 5. All clamping blocks 5 on the same side of the housing 3 are arranged in rows and columns. The clamping blocks 5 in two adjacent rows form a clamping position for a hydraulic valve body 1, which is used to clamp the hydraulic valve body 1. The distance between the outermost two clamping blocks 5 in a row is less than the length of the hydraulic valve body 1 clamped by the two clamping blocks 5. Thus, the outermost side of the two outermost clamping blocks 5 is closer to the inner side of the two outermost end faces of the clamped hydraulic valve body 1, that is, the two outermost end faces of the hydraulic valve body 1 protrude from the outermost end faces of the two clamping blocks 5. Thus, the three surfaces of the hydraulic valve body 1 to be processed are exposed. Compared with processing one surface at a time in the past, the processing speed of the hydraulic valve body 1 is accelerated. Moreover, the same side of the housing 3 can clamp at least two hydraulic valve bodies 1, which reduces the overall placement time of the hydraulic valve body 1 and helps to improve the overall processing rate of the hydraulic valve body 1.

[0038] Among them, reference Figure 9 and Figure 10 The three surfaces to be processed of the exposed hydraulic valve body 1 are surface A, surface B and surface C, and the other three surfaces are the clamped surfaces.

[0039] In summary, compared to existing technologies, the positioning track components 4 on opposite sides of the housing 3 have different spacing, and at least two tracks on the same side are arranged laterally at intervals. This allows it to adapt to cuboid hydraulic valve bodies 1 of different lengths and widths, eliminating the need for separate tooling designs for different valve body specifications, thus expanding the applicability and reducing the tooling investment costs for multi-specification processing. The clamping blocks 5 are distributed in rows and columns to form stable clamping positions, and the outermost clamping block 5 has its outer end face recessed, exposing the three surfaces of the valve body to be processed, achieving "multiple surfaces processed in one clamping," reducing the number of clamping operations, avoiding errors caused by repeated positioning, and ensuring processing accuracy; at the same time, it reduces the waiting time for changing surfaces and improves processing efficiency per unit time.

[0040] Furthermore, referring to Figure 7 and Figure 8 The positioning track assembly 4 includes a long strip track 41, a rotating shaft 42, multiple first sliders 43 and multiple second sliders 44, and multiple clamping blocks 5 are installed on the first sliders 43 and / or the second sliders 44. That is, multiple clamping blocks 5 can be installed on multiple first sliders 43 at the same time, multiple second sliders 44 at the same time, and multiple first sliders 43 and second sliders 44 at the same time. The track bar 41 is perpendicular to the base 2 of the box and extends along the length of the box 3 to the end of the box 3. A slide groove extending along the length of the track bar 41 is provided on one side away from the center of the box 3. The slide groove is T-shaped and includes a first slide rail section 411 and a second slide rail section 412. The first slide rail section 411 and the second slide rail section 412 are symmetrical about the middle of the slide groove. A plurality of first sliders 43 are slidably connected to the first slide rail section 411 and limited to both ends of the first slide rail section 411. A plurality of second sliders 44 are slidably connected to the second slide rail section 412 and limited to both ends of the second slide rail section 412. A rotating shaft 42 passes through the interior of a track bar 41 along its length. The rotating shaft 42 has a first threaded section 421 and a second threaded section 422 corresponding to the first slide rail section 411 and the second slide rail section 412, respectively. The first threaded section 421 and the second threaded section 422 rotate in opposite directions. The first threaded section 421 is connected to multiple first sliders 43 via multiple first connecting members. The first connecting members are threaded to the first thread. As the rotating shaft 42 rotates, it drives the first connecting members to move, which in turn drives the first sliders 43 to move. The second threaded section 422 is connected to multiple second sliders 44 via multiple second connecting members. The second connecting members are threaded to the second thread. As the rotating shaft 42 rotates, it drives the second connecting members to move, which in turn drives the second sliders 44 to move.

[0041] Furthermore, a screwing part 45 is fixed to the top of the rotating shaft 42 by welding, screwing or snapping, etc. The screwing part 45 has a polygonal cross-section and can drive the rotating shaft 42 to rotate. The screwing part 45 protrudes from the top of the track bar 41.

[0042] Furthermore, both the first and second connecting members include a threaded sleeve and a transmission rod. The threaded sleeve of the first connecting member is fitted around the first threaded section 421. The two ends of the transmission rod of the first connecting member are welded, snapped, or riveted to the circumference of the threaded sleeve of the first connecting member and the first slider 43, for converting the rotation of the rotating shaft 42 into the linear motion of the first slider 43. The threaded sleeve of the second connecting member is fitted around the second threaded section 422. The two ends of the transmission rod of the second connecting member are welded, snapped, or riveted to the circumference of the threaded sleeve of the second connecting member and the second slider 44, for converting the rotation of the rotating shaft 42 into the linear motion of the second slider 44.

[0043] Furthermore, two first limiting blocks are fixedly provided at both ends of the first slide rail segment 411. As the first limiting blocks move, they can abut against the first slider 43, thereby forming a limit at both ends of the first slide rail segment 411. Two second limiting blocks are fixedly provided at both ends of the second slide rail segment 412. As the second limiting blocks move, they can abut against the second slider 44, thereby forming a limit at both ends of the second slide rail segment 412.

[0044] Furthermore, referring to Figure 5 and Figure 6 The clamping block 5 is made of 20CrMnTi material, undergoes carburizing treatment, blackening and finishing, and has uniformly chamfered sharp edges. The clamping block 5 is divided into two first clamping blocks 51 distributed at both ends of the positioning track assembly 4 and a second clamping block 52 distributed in the middle of the positioning track assembly 4. The two first clamping blocks 51 are distributed on the first slide rail section 411 and the second slide rail section 412, and the first clamping blocks 51 are distributed between the first slide rail section 411 and the second slide rail section 412. The first slider 43 and the second slider 44 are both provided with threaded holes corresponding to the first clamping blocks 51. An adjacent row of first clamping blocks 51 and a row of first clamping blocks 51 together clamp a hydraulic valve body 1. The first clamp block 51 is provided with multiple first threaded through holes 511 and first locking strips 512. The first threaded through holes 511 are connected to the threaded holes on the first slider 43 and the threaded holes on the second slider 44 by bolt threads. When the first clamp block 51 is connected to the first slider 43, the first locking strips 512 extend into the sliding grooves of two adjacent first sliders 43, and the first locking strips 512 are aligned with the two adjacent first sliders 43 to prevent the first clamp block 51 from moving. When the first locking strips 512 abut against the two first sliders 43, the first threaded through holes 511 are aligned with the threaded holes on the first sliders 43, which facilitates the threaded connection between the first clamp block 51 and the first sliders 43. When the first clamping block 51 is connected to the second slider 44, the first locking strip 512 is located between two adjacent second sliders 44 and abuts against the two adjacent second sliders 44 to prevent the first clamping block 51 from moving. When the first locking strip 512 abuts against the two second sliders 44, the first threaded through hole 511 is aligned with the threaded hole on the second slider 44 to facilitate the threaded connection between the first clamping block 51 and the second slider 44.

[0045] Furthermore, the second clamping block 52 is provided with multiple second threaded through holes 521 and second locking strips 522. A recess adapted to the second locking strips 522 is opened in the middle of the track strip 41, and the recess is perpendicular to the extension direction of the slide groove. The recess is located on the axis of symmetry of the first slide rail section 411 and the second slide rail section 412. The second locking strips 522 extend into the recess, and the two cooperate to prevent the second clamping block 52 from shifting. Thus, the second clamping block 52 is relatively fixed to the housing 3. When the second locking strips 522 are located in the recess, the multiple second threaded through holes 521 of the second clamping block 52 are aligned with the threaded holes on both sides of the recess. Therefore, the first clamping block 51 and the second clamping block 52 clamp the two surfaces of the hydraulic valve body 1 that abut against them, and these two surfaces are in contact with surfaces A, B, and C of the hydraulic valve body 1.

[0046] Furthermore, in order to align at least two hydraulic valve bodies 1 on the same side along the length of the housing 3, the tooling fixture also includes multiple strip-shaped side positioning plates 6. The side positioning plates 6 are made of 40Cr material, heat-treated to HRC45, then blackened, and have uniformly chamfered sharp edges. Multiple circular through holes are spaced along the length of the side positioning plates 6, and each side positioning plate 6 is connected to the A and B surfaces of the three surfaces to be machined on two adjacent hydraulic valve bodies 1. The two ends of the multiple side positioning plates 6 are respectively adapted to be threadedly connected to the A and B surfaces on two adjacent hydraulic valve bodies 1. Furthermore, the two ends of the side positioning plates 6 on the A surfaces of two adjacent hydraulic valve bodies 1 are respectively attached to the A surfaces of the two adjacent hydraulic valve bodies 1, and the two ends of the side positioning plates 6 on the B surfaces of two adjacent hydraulic valve bodies 1 are respectively attached to the B surfaces of the two adjacent hydraulic valve bodies 1. Meanwhile, the side positioning plate 6 has two intersecting circular holes with different cross-sections in the middle. The side positioning plate 6 is threadedly connected to the first clamping block 51, and there is a certain gap between the side positioning plate 6 and the first clamping block 51, so that at least two hydraulic valve bodies 1 on the same side of the housing 3 are aligned along the length of the housing 3. Thus, the other surface of the three clamped surfaces of the hydraulic valve body 1 opposite to surface B is abutted against the slide groove by the side positioning plate 6 on surface B of the hydraulic valve body 1. That is, the side positioning plate 6 on surface B simultaneously connects two adjacent hydraulic valve bodies 1 on the same side to the second clamping block 52. The second clamping block 52 and the side positioning plate 6 tighten the other side of the hydraulic valve body 1 opposite to surface B and the track bar 41, so that the other side of the hydraulic valve body 1 opposite to surface B and surface B are clamped by the track bar 41 and the side positioning plate 6.

[0047] Furthermore, the housing 3 includes a first side and a second side arranged opposite to each other, which are two rectangular sides of the housing 3. Two positioning rail assemblies 4 are fixed to the first side by means of screwing, welding, or snap-fitting, and the distance between the two positioning rail assemblies 4 is in the range of 250mm-300mm, suitable for processing hydraulic valve bodies 1 with a length range of 320mm-500mm. Two positioning rail assemblies 4 are fixed to the second side by means of screwing, welding, or snap-fitting, and the distance between the two positioning rail assemblies 4 is in the range of 450mm-490mm, suitable for processing hydraulic valve bodies 1 with a length range of 500mm-690mm. The A surface of the hydraulic valve body 1 protrudes from the first clamping block 51 by a length in the range of 5mm-15mm, the C surface of the hydraulic valve body 1 protrudes from the first clamping block 51 by a length in the range of 5mm-195mm, and the B surface of the hydraulic valve body 1 protrudes from the first clamping block 51 by a length in the range of 5mm-15mm.

[0048] Furthermore, multiple lifting rings 21 for hoisting are fixed around the base 2 of the box.

[0049] Example 2:

[0050] Reference Figure 11 The difference between this embodiment and embodiment 1 is that a top cover 31 is added to the top of the box 3, as detailed below.

[0051] In this embodiment, the top of the box body 3 is rectangular, and the top of the box body 3 is also provided with a top cover 31 of the same rectangle. The top cover 31 is made of sheet metal material, which is then blackened and the sharp edges are evenly chamfered to cover the top surface of the box body 3. Multiple threaded holes for threaded connection are opened on both the top cover 31 and the top of the box body 3, which are distributed on the periphery and center of the rectangular top cover 31 to enhance the fixing effect with the top of the box body 3.

[0052] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0054] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tooling fixture for machining hydraulic valve bodies, suitable for clamping rectangular hydraulic valve bodies (1), characterized in that: It includes a box base (2) that can be rotatably fixed to the processing platform, a box (3) fixed to the box base (2), a positioning track assembly (4), and multiple clamping blocks (5); Multiple positioning track components (4) are provided on two opposite sides of the box (3). At least two positioning track components (4) are arranged laterally on the same side of the box (3), and the spacing between the positioning track components (4) on different sides of the box (3) is different. Each positioning track assembly (4) is equipped with multiple clamping blocks (5). All clamping blocks (5) on the same side of the housing (3) are arranged in rows and columns. The clamping blocks (5) in adjacent rows form a clamping position for a hydraulic valve body (1). The distance between the outer end faces of the two outermost clamping blocks (5) in a row is less than the length of the hydraulic valve body (1) they clamp, and the outer side of the clamping block (5) can be placed inward relative to the outer side of the hydraulic valve body (1) to expose the three surfaces of the hydraulic valve body to be processed.

2. The tooling fixture for machining hydraulic valve bodies as described in claim 1, characterized in that: The positioning track assembly (4) includes a long strip track (41), a rotating shaft (42), a plurality of first sliders (43) and a plurality of second sliders (44), and a plurality of clamp blocks (5) are mounted on the first sliders (43) and / or the second sliders (44); A T-shaped groove extending along the length of the track bar (41) is provided on one side surface. The groove includes a first slide rail section (411) and a second slide rail section (412). A plurality of first sliders (43) and a plurality of second sliders (44) are slidably connected to the first slide rail section (411) and the second slide rail section (412) respectively, and are respectively limited to the two ends of the first slide rail section (411) and the second slide rail section (412). A rotating shaft (42) passes through the track bar (41) along the length of the track bar (41). Inside, the rotating shaft (42) is provided with a first threaded section (421) and a second threaded section (422) corresponding to the first slide rail section (411) and the second slide rail section (412). The first threaded section (421) and the second threaded section (422) rotate in opposite directions. The first threaded section (421) is connected to a plurality of first sliders (43) through a plurality of first connectors, and the second threaded section (422) is connected to a plurality of second sliders (44) through a plurality of second connectors.

3. The tooling fixture for machining hydraulic valve bodies as described in claim 2, characterized in that: The top end of the rotating shaft (42) is fixed with a screwing part (45) for driving the rotating shaft (42) to rotate. The screwing part (45) protrudes from the top end of the track bar (41) and its cross-section is polygonal.

4. The tooling fixture for machining hydraulic valve bodies as described in claim 2, characterized in that: Both the first connector and the second connector include a threaded sleeve fitted around the first threaded section (421) or the second threaded section (422) and a transmission rod connected to the first slider (43) or the second slider (44), with the transmission rod fixedly connected to the circumference of the threaded sleeve.

5. The tooling fixture for machining hydraulic valve bodies as described in claim 2, characterized in that: Two first limiting blocks are fixed at both ends of the first slide rail section (411), thereby forming the limiting at both ends of the first slide rail section (411); Two second limiting blocks are fixed at both ends of the second slide rail section (412), thereby forming the limiting at both ends of the second slide rail section (412).

6. The tooling fixture for machining hydraulic valve bodies as described in claim 5, characterized in that: The first slider (43) and the second slider (44) have multiple threaded holes on their sides corresponding to the clamp block (5); The clamp block (5) is divided into two first clamp blocks (51) distributed at both ends of the positioning track assembly (4) and a second clamp block (52) distributed in the middle of the positioning track assembly (4). A row of first clamp blocks (51) and a row of second clamp blocks (52) together clamp a hydraulic valve body (1). The first clamp block (51) is provided with a plurality of first threaded through holes (511) and a first retaining strip (512). The first retaining strip (512) extends into the slide groove and abuts against two adjacent first sliders (43) or second sliders (44). When two adjacent first sliders (43) or two adjacent second sliders (44) abut against the first retaining strip (512), the plurality of first threaded through holes (511) on the first clamp block (51) are respectively aligned with the threaded holes on the two first sliders (43) or two second sliders (44). The first clamp block (51) is threadedly connected to the two first sliders (43) or two second sliders (44). The second clamp block (52) is provided with multiple second threaded through holes (521) and a second locking strip (522). The middle part of the track bar (41) is provided with a notch that is adapted to the second locking strip (522) and perpendicular to the extension direction of the slide groove. When the second locking strip (522) is located in the notch, the multiple second threaded through holes (521) of the second clamp block (52) are respectively aligned with the threaded holes on both sides of the notch, and the second clamp block (52) is threadedly connected to the middle part of the track bar (41).

7. The tooling fixture for machining hydraulic valve bodies as described in claim 6, characterized in that: The tooling fixture for machining hydraulic valve bodies also includes multiple strip-shaped side positioning plates (6). The multiple side positioning plates (6) are respectively connected to one side and one end face of the three surfaces to be machined of the hydraulic valve body (1). Multiple threaded holes are spaced apart along the length of the side positioning plate (6). The two ends of the side positioning plate (6) are respectively adapted to be threadedly connected to the same surface to be machined of two hydraulic valve bodies (1) on the same side of the housing (3). The middle part of the side positioning plate (6) is connected to the second fixture block (52) so that the two hydraulic valve bodies (1) on the same side are aligned.

8. The tooling fixture for machining hydraulic valve bodies as described in claim 1, characterized in that: The housing (3) includes a first side and a second side arranged opposite to each other; Two positioning rail assemblies (4) are fixed on the first side, and the distance between the two positioning rail assemblies (4) is within the range of 250mm-300mm, so as to be suitable for processing hydraulic valve bodies (1) with a length value in the range of 320mm-500mm; Two positioning rail assemblies (4) are fixed on the second side, and the distance between the two positioning rail assemblies (4) is in the range of 450mm-490mm, so as to be suitable for processing hydraulic valve bodies (1) with a length value in the range of 500mm-690mm.

9. The tooling fixture for machining hydraulic valve bodies as described in claim 1, characterized in that: The top of the box (3) is also provided with a top cover (31) of the same shape to cover the top surface of the box (3), and multiple threaded holes for threaded connection are opened on both the top cover (31) and the top of the box (3).

10. The tooling fixture for machining hydraulic valve bodies as described in claim 1, characterized in that: The base of the box (2) is fixed with multiple lifting rings (21) for hoisting.

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