Machining tool for cutting hydraulic oil cylinder accessories

Abstract

The utility model belongs to the technical field of equipment machining, and particularly discloses a machining tool used for cutting hydraulic oil cylinder accessories, which comprises a placing platform, a bearing assembly and a limiting assembly, the bearing assembly comprises a placing track and bearing pieces used for placing workpieces, each bearing piece comprises two bearing plates, the two bearing plates are arranged in an inclined mode, and the limiting assembly is arranged on the placing track. The limiting assembly comprises an outer wall limiting piece and an inner wall limiting piece, the inner wall limiting piece is installed on the containing track, and the outer wall limiting piece comprises a driving air cylinder, a limiting clamping plate and a pushing piece. Workpieces are supported by the bottom of the bearing assembly, internally tensioned by the inner wall limiting piece and externally clamped by the outer wall limiting piece, a multi-dimensional constraint system is formed, and the workpieces are clamped by the pushing piece; the rubber layer of the bearing plate buffers vibration and increases friction, all the assemblies cooperate to resist cutting force and vibration, it is ensured that the posture of a workpiece is stable, a precise and reliable clamping foundation is provided for cutting machining, and the cutting precision and quality of hydraulic oil cylinder accessories are guaranteed.

Description

Technical Field

[0001] This application relates to the field of equipment processing technology, and more specifically, to a processing fixture for cutting hydraulic cylinder parts. Background Technology

[0002] In the manufacturing of hydraulic cylinder components, cutting is a crucial process, as its precision and efficiency directly impact the quality and subsequent performance of the components. However, existing cutting fixtures for hydraulic cylinder components present numerous problems in practical applications, hindering improvements in processing quality and production efficiency.

[0003] Traditional cutting fixtures suffer from poor versatility, requiring frequent fixture changes or complex adjustments for hydraulic cylinder components of different sizes and shapes. For example, the original fixtures are difficult to adapt to cylindrical components of different lengths and diameters through simple adjustments, leading to increased clamping time and production costs. Furthermore, traditional fixtures often use unidirectional clamping methods, such as fixing only the outer wall or bottom of the workpiece. During cutting, the workpiece is prone to displacement or wobbling due to cutting forces and vibrations, affecting cutting accuracy and even increasing scrap rates. This results in low clamping efficiency, making it difficult to meet the demands of mass production. Utility Model Content

[0004] The purpose of this invention is to provide a machining fixture for cutting hydraulic cylinder parts, so as to solve the problems mentioned in the background art.

[0005] A machining fixture for cutting hydraulic cylinder parts, comprising:

[0006] The system includes a placement platform, a support component, and a limiting component. The support component is mounted on the placement platform, and one end of the limiting component is mounted on the placement platform, while the other end extends directly above the support component.

[0007] The support assembly includes a placement track and a support member for placing the workpiece. There are two support members, and both support members can slide on the placement track. Each support member includes two support plates, and the two support plates are inclined.

[0008] The limiting component includes an outer wall limiting member and an inner wall limiting member. The inner wall limiting member is installed on the placement track and one end of the inner wall limiting member can extend into the workpiece. The outer wall limiting member includes a driving cylinder, a limiting plate, and a pushing member. One end of the pushing member is installed at the output end of the driving cylinder and the other end of the pushing member is fixedly connected to the limiting plate.

[0009] Through the above technical solution, a structure of placement platform, support component and limiting component working together is adopted to achieve all-round control of hydraulic cylinder accessories from bottom support to top limiting, ensuring the stability of workpiece posture during cutting. The inner and outer walls of the limiting component have different functions, applying constraints from the inner and outer walls of the accessory respectively, forming a three-dimensional limiting system, so that the workpiece is not easy to move under the action of cutting force.

[0010] Furthermore, a fixing frame for supporting the drive cylinder is provided on the side of the drive cylinder. The drive cylinder is vertically arranged and its output end extends outside the fixing frame. A push plate is provided below the fixing frame and is fixedly connected to the output end of the drive cylinder. The push member includes two push rods arranged at intervals. A fixing sleeve is fitted on each push rod. The fixing sleeve is fixedly connected to the push plate and a push spring is provided inside the fixing sleeve. The bottom of the limiting plate is fixedly connected to the two push rods.

[0011] Through the above technical solution, the spring can absorb the vibration transmitted by the workpiece during cutting, preventing the vibration from being transmitted in reverse and damaging the cylinder. On the other hand, the elastic structure makes the clamping plate of the limiting plate more flexible in clamping the outer wall of the workpiece, adapting to accessories with different outer wall flatness, ensuring the limiting force while avoiding rigid extrusion that damages the workpiece surface.

[0012] Furthermore, the inner wall limiting component includes a fixing plate and a receiving cylinder. The receiving cylinder is horizontally arranged and has several abutting blocks on its outer side wall. Each abutting block has a connecting block extending into the receiving cylinder, and each connecting block has a first wedge surface. The receiving cylinder has a through hole corresponding to each connecting block. The receiving cylinder has a fixing rod inside and a limiting block is sleeved on the fixing rod. The limiting block has a second wedge surface that mates with all the first wedge surfaces. The fixing rod has a limiting nut that is threadedly engaged with it, and the side wall of the limiting nut abuts against the limiting block. One end of the fixing rod is fixedly connected to the receiving cylinder, and the other end of the fixing rod is connected to the fixing plate through an internal hex bolt.

[0013] Through the above technical solution, multiple abutment blocks can be replaced according to the different inner walls of the workpiece being abutted. Each connecting block is equipped with a detachable blocking block, which can prevent the abutment block and the corresponding connecting block from detaching from the receiving cylinder.

[0014] Furthermore, each of the support components also includes a support base and a placement box. The support base is slidably overlapped on the placement track and is provided with a positioning handle threadedly connected to it. One end of the positioning handle is placed outside the support base, and the other end of the positioning handle abuts against the placement track. The placement box is fixedly installed on the top of the support base. The bottom of both support plates is provided with sliding blocks, and both sliding blocks are movable and placed inside the placement box.

[0015] The above technical solution connects the placement box and the sliding block of the support plate, allowing the support plate to move within the placement box. This adapts to hydraulic cylinder accessories with different widths and support point requirements, adjusts the spacing and position of the support plates, and optimizes the workpiece support stability.

[0016] Furthermore, both sliding blocks are provided with locking holes, the outer wall of the placement box is provided with locking rods that cooperate with the locking holes, and the placement box is provided with through holes for the locking rods to be inserted.

[0017] Furthermore, a limiting block is fitted onto the locking rod, and a magnet is embedded in the side of the limiting block near the placement box.

[0018] Furthermore, each of the support plates has a rubber layer covering its outer side wall.

[0019] Compared with existing technologies, the beneficial effects of this utility model are as follows: A multi-dimensional constraint system is formed by supporting the workpiece at the bottom of the support assembly, internally tightening the inner wall limiting component, and externally clamping the outer wall limiting component. The rubber layer of the support plate buffers vibration and increases friction. All components work together to resist cutting force and vibration, ensuring workpiece stability and providing a precise and reliable clamping foundation for cutting, thus guaranteeing the cutting accuracy and quality of the hydraulic cylinder components. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the inner wall limiting component of this utility model;

[0022] Figure 3 This is a cross-sectional view of the inner wall limiting component of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the outer wall limiting component of this utility model;

[0024] Figure 5 This is a cross-sectional view of the outer wall limiting component of this utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the support component of this utility model;

[0026] Figure 7 This is a cross-sectional view of the support component of this utility model.

[0027] In the diagram: 1. Placement platform; 2. Support component; 21. Placement track; 3. Limiting component; 4. Supporting element; 41. Support plate; 42. Support seat; 43. Placement box; 44. Positioning handle; 45. Sliding block; 46. Locking hole; 47. Locking rod; 48. Limiting block; 5. Outer wall limiting element; 51. Drive cylinder; 52. Limiting plate; 53. Fixing frame; 54. Pushing plate; 6. Inner wall limiting element; 61. Fixing plate; 62. Receiving cylinder; 63. Connecting block; 64. Fixing rod; 65. Limiting block; 66. Limiting nut; 67. Elevating block; 68. Fixing seat; 69. Abutment block; 7. Pushing element; 71. Pushing rod; 72. Fixing sleeve; 73. Pushing spring. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Reference Figures 1-7 A machining fixture for cutting hydraulic cylinder parts, comprising:

[0030] The system includes a placement platform 1, a support component 2, and a limiting component 3. The support component 2 is mounted on the placement platform 1, and one end of the limiting component 3 is mounted on the placement platform 1, while the other end extends directly above the support component 2.

[0031] The support assembly 2 includes a placement track 21 and a support member 4 for placing the workpiece. There are two support members 4, and both support members 4 can slide on the placement track 21. Each support member 4 includes two support plates 41, and the two support plates 41 are inclined.

[0032] The limiting component 3 includes an outer wall limiting member 5 and an inner wall limiting member 6. The inner wall limiting member 6 is installed on the placement track 21 and one end of the inner wall limiting member 6 can extend into the workpiece. The outer wall limiting member 5 includes a driving cylinder 51, a limiting plate 52, and a pushing member 7. One end of the pushing member 7 is installed at the output end of the driving cylinder 51, and the other end of the pushing member 7 is fixedly connected to the limiting plate 52.

[0033] 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.

[0034] Reference Figures 1-7 A machining fixture for cutting hydraulic cylinder parts, comprising:

[0035] The system includes a placement platform 1, a support component 2, and a limiting component 3. The support component 2 is mounted on the placement platform 1, and one end of the limiting component 3 is mounted on the placement platform 1, while the other end extends directly above the support component 2.

[0036] The support assembly 2 includes a placement track 21 and a support member 4 for placing the workpiece. There are two support members 4, and both support members 4 can slide on the placement track 21. Each support member 4 includes two support plates 41, and the two support plates 41 are inclined.

[0037] The limiting component 3 includes an outer wall limiting member 5 and an inner wall limiting member 6. The inner wall limiting member 6 is installed on the placement track 21 and one end of the inner wall limiting member 6 can extend into the workpiece. The outer wall limiting member 5 includes a driving cylinder 51, a limiting plate 52, and a pushing member 7. One end of the pushing member 7 is installed at the output end of the driving cylinder 51, and the other end of the pushing member 7 is fixedly connected to the limiting plate 52.

[0038] First, a collaborative structure consisting of a placement platform 1, a support component 2, and a limiting component 3 is adopted to achieve comprehensive control over the hydraulic cylinder components from bottom support to top limiting, ensuring workpiece stability during cutting. The support component 2 features a sliding design with dual support members 4, adaptable to components of different lengths and enhancing tooling versatility. The inclined support plate 41 utilizes the self-centering principle of the inclined plane to quickly align cylindrical and other hydraulic cylinder components, simplifying the clamping process. The limiting component 3 has separate inner and outer wall limiting functions, applying constraints from the inner and outer walls of the components to form a three-dimensional limiting system, preventing workpiece displacement under cutting force.

[0039] Reference Figure 4 and Figure 5The drive cylinder 51 is provided with a fixed frame 53 for support on its side. The drive cylinder 51 is vertically arranged and its output end extends outside the fixed frame 53. A push plate 54 is provided below the fixed frame 53 and is fixedly connected to the output end of the drive cylinder 51. The push member 7 includes two push rods 71 ​​arranged at intervals. Each push rod 71 is fitted with a fixed sleeve 72. The fixed sleeve 72 is fixedly connected to the push plate and a push spring 73 is provided inside the fixed sleeve 72. The bottom of the limiting plate 52 is fixedly connected to the two push rods 71. The drive cylinder 51, together with the fixed frame 53, provides stable support for the cylinder, ensures accurate output force direction, and avoids cylinder shaking from affecting the pushing accuracy of the limiting plate 52. The design of the double push rods 71, fixed sleeve 72 and push spring 73 of the push member 7 forms an elastic buffer system. On the one hand, the spring can absorb the vibration transmitted by the workpiece during cutting, preventing the vibration from being transmitted in the opposite direction and damaging the cylinder; on the other hand, the elastic structure makes the clamping plate 52 more flexible in clamping the outer wall of the workpiece, adapting to accessories with different outer wall flatness, ensuring the limiting force while avoiding rigid extrusion that damages the workpiece surface.

[0040] Reference Figure 2 and Figure 3 The inner wall limiting member 6 includes a fixing plate 61 and a receiving cylinder 62. The receiving cylinder 62 is horizontally arranged, and a plurality of abutment blocks 69 are provided on its outer side wall. Each abutment block 69 is provided with a connecting block 63 extending into the receiving cylinder 62. Each connecting block 63 is provided with a first wedge surface. The receiving cylinder 62 is provided with a through hole corresponding to each connecting block 63. A fixing rod 64 is provided inside the receiving cylinder 62, and a limiting block 65 is sleeved on the fixing rod 64. The limiting block 65 is provided with a second wedge surface that mates with all the first wedge surfaces. The fixing rod 64 is equipped with a limit nut 66 that is threadedly engaged with it, and the side wall of the limit nut 66 abuts against the limit block 65. One end of the fixing rod 64 is fixedly connected to the receiving cylinder 62, and the other end of the fixing rod 64 is connected to the fixing plate 61 through an internal hex bolt. The combination of the fixing plate 61 and the receiving cylinder 62, along with the multiple abutting block structure on the receiving cylinder 62, allows for constraint to be applied from multiple points on the inner wall of the workpiece. This adapts to hydraulic cylinder accessories that adjust the distribution and extension of the abutting blocks for inner walls of different inner diameters and shapes, such as circular and polygonal ones, enhancing the versatility of inner wall limiting. The abutting blocks engage with the limit block 65 through the connecting block 63 and the wedge surface. Utilizing the wedge surface principle, rotating the limit nut 66 simultaneously adjusts the extension of all abutting blocks, achieving fast and precise inner wall tensioning and limiting, making the operation simple and efficient. The internal hex bolt connection method facilitates the disassembly and replacement of the inner wall limiting component 6, adapting to the inner wall limiting requirements of different workpieces. Multiple abutment blocks are set up so that they can be replaced according to the different inner walls of the workpieces being abutted. Each connecting block 63 is equipped with a detachable blocking block, which can prevent the abutment block and the corresponding connecting block 63 from detaching from the receiving cylinder 62.

[0041] Reference Figure 2 and Figure 3 The fixing plate 61 has an L-shaped cross-section and a countersunk hole for the internal hexagon bolt to pass through. The bottom of the fixing plate 61 has a shim 67 and a fixing seat 68. The fixing seat 68 is mounted on the placement track 21, and the shim 67 is placed on top of the fixing seat 68. The fixing plate 61 is fixedly connected to the shim 67 by bolts. The L-shaped cross-section design of the fixing plate 61 provides a stable installation reference using a vertical surface, ensuring the installation accuracy of the inner wall limiting component 6 and the housing 62, etc. Furthermore, the countersunk hole design hides the head of the internal hexagon bolt, preventing the bolt from protruding and affecting workpiece clamping and processing operations, and keeping the tooling surface clean. The combination of the shim 67 and the fixing seat 68 allows adjustment of the height of the inner wall limiting component 6, adapting to the inner wall limiting requirements of hydraulic cylinder accessories with different heights and axial positions, increasing the tooling adjustment dimensions and improving adaptability.

[0042] Reference Figure 6 and Figure 7 Each of the support components 4 also includes a support base 42 and a placement box 43. The support base 42 is slidably overlapped on the placement rail 21 and is provided with a positioning handle 44 threadedly connected to it. One end of the positioning handle 44 is placed outside the support base 42, and the other end of the positioning handle 44 abuts against the placement rail 21. The placement box 43 is fixedly installed on the top of the support base 42. The bottom of each of the two support plates 41 is provided with a sliding block 45, and both sliding blocks 45 are movably placed inside the placement box 43. The design of the sliding overlap between the support base 42 and the placement rail 21 and the positioning handle 44 makes it convenient to adjust the position of the support component 4. Workers can quickly slide the support base 42 to the appropriate position according to the length of the workpiece and tighten it by screwing the positioning handle 44, without the need for complicated tools, thus improving clamping efficiency. The placement box 43 is connected to the sliding block 45 of the support plate 41, allowing the support plate 41 to move within the placement box 43. This adapts to hydraulic cylinder accessories of different widths and support point requirements, adjusting the spacing and position of the support plates 41 to optimize workpiece support stability. The threaded connection of the positioning handle 44 provides good self-locking, preventing the support seat 42 from sliding after fixing, thus ensuring stable support position during cutting.

[0043] Reference Figure 6 and Figure 7Both sliding blocks 45 are provided with locking holes 46. The outer wall of the placement box 43 is provided with a locking rod 47 that mates with the locking holes 46. The placement box 43 has a through hole for inserting the locking rod 47. The locking holes 46 of the sliding blocks 45 and the locking rod 47 of the placement box 43 cooperate to provide additional fixation for the support plate 41. After the support plate 41 is adjusted to a suitable position, inserting the locking rod 47 can restrict the movement of the sliding blocks 45, further ensuring the stability of the support plate 41 and preventing the support plate 41 from shifting due to cutting vibration, thus affecting workpiece support. The through hole design of the placement box 43 makes it easy to insert the locking rod 47, simplifying worker operation, eliminating the need for complex tools, and quickly completing the locking process, thus improving clamping efficiency and stability.

[0044] Reference Figure 6 and Figure 7 The locking rod 47 is fitted with a limiting block 48, and a magnet is embedded in the side of the limiting block 48 near the placement box 43. The design of the limiting block 48 and the magnet on the locking rod 47 serves two purposes: first, the limiting block 48 can prevent the locking rod 47 from being over-inserted, ensuring that the insertion depth of the locking rod 47 is appropriate, which ensures the locking effect and avoids damage to the internal structure of the placement box 43 and the sliding block 45; second, the magnet attracts the placement box 43, so that the locking rod 47 can be easily attracted to the side of the placement box 43 when not in use, making it less likely to be lost and easy to retrieve, thereby improving the convenience of tooling use and the efficiency of tool management.

[0045] Each of the support plates 41 has a rubber layer covering its outer side wall. The rubber layer has elastic, wear-resistant, and anti-slip properties. The elasticity can buffer cutting vibration, reduce the transmission of vibration to the workpiece, and protect the surface accuracy of the workpiece. The wear-resistant properties extend the service life of the support plate 41 and reduce tooling maintenance costs. The anti-slip properties increase the friction between the support plate 41 and the workpiece, preventing the workpiece from sliding on the support plate 41, especially for hydraulic cylinder accessories with smooth surfaces, thus improving support stability.

[0046] Working principle: First, the two support pieces 4 slide and overlap with the placement track 21 through the support base 42. The worker can manually push the support base 42 to adjust the spacing according to the length of the hydraulic cylinder accessories. After the positioning handle 44 is tightened, the position of the support base 42 is fixed by the thread self-locking, providing a stable bottom support area for the workpiece. After the support plate 41 is adjusted into place, the locking rod 47 is inserted into the through hole of the placement box 43 and the locking hole 46 of the sliding block 45 to restrict the sliding of the support plate 41 and further ensure the stability of the support. The sliding block 45 at the bottom of the support plate 41 is placed in the placement box 43, and the spacing and front and back positions of the two support plates 41 can be adjusted as needed to adapt to the width of the accessories and the requirements of the force points. The inclined support plate 41 can also use the inclined surface to self-center to assist the workpiece in the initial alignment, so that the workpiece is roughly in the ideal posture for cutting and processing.

[0047] The inner wall limiting component 6 applies constraint from the inside of the workpiece. After the height of the fixed plate 61 is adjusted by the shim block 67 and the fixed seat 68, it is firmly connected to the tooling by bolts to provide a reference for the inner wall limiting. The receiving cylinder 62 is installed on the fixed plate 61. Its outer wall has multiple abutment blocks that can be adapted to accessories with different inner diameters. When the limiting nut 66 is rotated, the second wedge surface of the upper limit block 65 of the fixed rod 64 interacts with the first wedge surface of the connecting block 63, pushing all the connecting blocks 63 to extend or retract synchronously. The extension length of the abutment block is adjusted, and the tension is achieved from multiple points on the inner wall of the workpiece to realize precise and fast inner wall limiting and limit the radial displacement of the workpiece.

[0048] Then, the workpiece is clamped from the outside by the outer wall limiting member 5, and the drive cylinder 51 is stably supported by the fixed frame 53, and the output end pushes the push plate 54. The double push rods 71 ​​of the push member 7 cooperate with the push spring 73 inside the fixed sleeve 72 to form an elastic buffer structure. When the drive cylinder 51 is activated, the push rods 71 ​​drive the limiting plate 52 to approach the outer wall of the workpiece. The spring can absorb the cutting vibration and avoid damage to the cylinder. At the same time, the limiting plate 52 flexibly adapts to the flatness of the outer wall of the workpiece, stably clamps the workpiece, and restricts its displacement in the outer wall direction.

[0049] During processing, the workpiece is supported at the bottom by the support component 2, internally tightened by the inner wall limiting component 6, and externally clamped by the outer wall limiting component 5, forming a multi-dimensional constraint system. The rubber layer of the support plate 41 buffers vibration and increases friction. All components work together to resist cutting force and vibration, ensuring the stability of the workpiece posture, providing a precise and reliable clamping foundation for cutting processing, and ensuring the cutting accuracy and quality of hydraulic cylinder accessories.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A machining fixture for cutting hydraulic cylinder parts, characterized in that, include: The platform (1), the support component (2) and the limiting component (3) are provided. The support component (2) is installed on the platform (1), and one end of the limiting component (3) is installed on the platform (1) and the other end extends directly above the support component (2). The support assembly (2) includes a placement track (21) and a support member (4) for placing the workpiece. There are two support members (4) and both support members (4) can slide on the placement track (21). Each support member (4) includes two support plates (41) and the two support plates (41) are inclined. The limiting component (3) includes an outer wall limiting component (5) and an inner wall limiting component (6). The inner wall limiting component (6) is installed on the placement track (21) and one end of the inner wall limiting component (6) can extend into the workpiece. The outer wall limiting component (5) includes a driving cylinder (51), a limiting plate (52) and a pusher (7). One end of the pusher (7) is installed at the output end of the driving cylinder (51) and the other end of the pusher (7) is fixedly connected to the limiting plate (52).

2. The machining fixture for cutting hydraulic cylinder parts according to claim 1, characterized in that: The drive cylinder (51) is provided with a fixed frame (53) for supporting it. The drive cylinder (51) is vertically arranged and the output end of the drive cylinder (51) extends to the outside of the fixed frame (53). A push plate (54) is provided below the fixed frame (53) and is fixedly connected to the output end of the drive cylinder (51). The push member (7) includes two push rods (71) arranged at intervals. A fixed sleeve (72) is sleeved on each push rod (71). The fixed sleeve (72) is fixedly connected to the push plate and a push spring (73) is provided inside the fixed sleeve (72). The bottom of the limiting plate (52) is fixedly connected to the two push rods (71).

3. The machining fixture for cutting hydraulic cylinder parts according to claim 1, characterized in that: The inner wall limiting member (6) includes a fixing plate (61) and a receiving cylinder (62). The receiving cylinder (62) is horizontally arranged and has several abutment blocks (69) on its outer side wall. Each abutment block (69) has a connecting block (63) extending into the receiving cylinder (62). Each connecting block (63) has a first wedge surface. The receiving cylinder (62) has a through hole corresponding to each connecting block (63). The receiving cylinder (62) is provided with... There is a fixed rod (64) and a limiting block (65) is fitted on the fixed rod (64) and the limiting block (65) is provided with a second wedge surface that mates with all the first wedge surfaces. The fixed rod (64) is provided with a limiting nut (66) that mates with it by thread and the side wall of the limiting nut (66) abuts against the limiting block (65). One end of the fixed rod (64) is fixedly connected to the receiving cylinder (62) and the other end of the fixed rod (64) is connected to the fixing plate (61) by an internal hex bolt.

4. The machining fixture for cutting hydraulic cylinder parts according to claim 3, characterized in that: The fixing plate (61) has an L-shaped cross section and a countersunk hole for the internal hexagon bolt to pass through. The bottom of the fixing plate (61) is provided with a shim (67) and a fixing seat (68). The fixing seat (68) is installed on the placement track (21) and the shim (67) is placed on top of the fixing seat (68). The fixing plate (61) is fixedly connected to the shim (67) by bolts.

5. The machining fixture for cutting hydraulic cylinder parts according to claim 4, characterized in that: Each of the support components (4) further includes a support base (42) and a placement box (43). The support base (42) is slidably overlapped on the placement track (21) and is provided with a positioning handle (44) threadedly connected thereto. One end of the positioning handle (44) is placed outside the support base (42), and the other end of the positioning handle (44) abuts against the placement track (21). The placement box (43) is fixedly installed on the top of the support base (42). The bottom of each of the two support plates (41) is provided with a sliding block (45), and both sliding blocks (45) are movable and placed inside the placement box (43).

6. The machining fixture for cutting hydraulic cylinder parts according to claim 5, characterized in that: Both sliding blocks (45) are provided with locking holes (46), and the outer wall of the placement box (43) is provided with locking rods (47) that cooperate with the locking holes (46). The placement box (43) is provided with through holes for the locking rods (47) to be inserted.

7. A machining fixture for cutting hydraulic cylinder parts according to claim 6, characterized in that: The locking rod (47) is fitted with a limiting block (48), and a magnet is embedded on the side of the limiting block (48) near the placement box (43).

8. The machining fixture for cutting hydraulic cylinder parts according to claim 1, characterized in that: Each of the support plates (41) has a rubber layer covering its outer side wall.

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