Multi-functional hydraulic cylinder inner hole machining tool based on joint machining

Abstract

The present invention relates to the field of metal cutting tool manufacturing, and discloses a multi-functional hydraulic cylinder inner hole machining tool based on joint machining, including a fixed rod. A tool is fixedly connected to the bottom of the fixed rod. An installation hole is opened at the top on the right side of the fixed rod. A front guide rod is fixedly connected inside the installation hole. A plurality of positioning strips are fixedly connected to the outer wall of the front guide rod. A guide sleeve is slidably connected to the outer wall of the front guide rod. A plurality of grooves are opened inside the guide sleeve. A threaded groove is opened on the front side of the guide sleeve. An adjusting nut is threadedly connected inside the threaded groove. The fixed rod and the tool are tightly connected by welding. The installation hole ensures accurate positioning of the front guide rod. The front guide rod slides inside the guide sleeve by the cooperation of the positioning strips and the grooves, ensuring that the tool does not deflect. Rotating the adjusting nut can change the protruding length of the front guide rod to adjust the position of the tool tip, thereby enabling the tool to adapt to the machining of inner holes with different diameter sizes and increasing its applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of metal cutting tool manufacturing, and specifically to a multi-functional hydraulic cylinder inner hole machining tool based on joint machining. Background Art

[0002] A composite tool is a tool that combines the functions of two or more different types of tools. It integrates multiple cutting edges on a single tool body, and the cutting edges can complete different machining processes. Some composite tools have both a twist drill part for drilling and a reamer part for reaming, and can complete the two processes of drilling and reaming in one clamping and feeding process.

[0003] Due to the improvement of industrial automation, the machining accuracy requirements for internal components of mechanical equipment are getting higher and higher. In a hydraulic device, as an important power transmission device, the quality of the inner hole of the joint seat of the hydraulic cylinder directly affects the performance stability and service life of the device. The joint seat is in the shape of a stepped hole, used to connect the quick interface of the hydraulic hose and is the liquid inlet of the cylinder. The machining process is drilling and reaming, including a sealing surface. Although the standard tools on the market can meet general machining requirements, they are unable to cope when facing joint seats with complex shapes and high-hardness materials during machining, and it is difficult to meet the requirements of precision machining. Traditional single-edge tools not only have low machining efficiency but also are prone to wear and cannot be formed in one step, increasing production costs.

[0004] Composite tools improve machining speed and surface quality by increasing the number of cutting edges. However, when dealing with cemented carbide materials, due to the large cutting force, this method is prone to tool chipping. The existing technology is to design a thick and solid tool body structure, increase the cross-sectional area and moment of inertia of the tool body to improve its ability to resist deformation. In large-diameter composite boring tools, the tool body adopts a thickened cylindrical shape or a structure with additional ribs, which can significantly enhance the rigidity of the tool body. However, when in use, due to its large volume, when the tool drills small-diameter holes, it cannot adapt to the inner hole machining of joint seats with different diameter sizes. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-functional hydraulic cylinder inner hole machining tool based on joint machining, which solves the problem in the prior art that due to its large volume, it cannot adapt to the inner hole machining of different diameter sizes when the tool drills small-diameter holes.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A multi-functional hydraulic cylinder inner hole machining tool based on joint machining, including a fixed rod, a tool is fixedly connected to the left side of the fixed rod, an installation hole is opened at the bottom of the outer wall of the fixed rod, a front guide rod is fixedly connected inside the installation hole, a plurality of positioning strips are fixedly connected to the outer wall of the front guide rod, a guide sleeve is slidably connected to the outer wall of the front guide rod, a plurality of grooves are opened inside the guide sleeve, a threaded groove is opened on the front side of the guide sleeve, an adjusting nut is threadedly connected inside the threaded groove, an installation mechanism is arranged on the top of the outer wall of the fixed rod, and a cooling mechanism is arranged on the right side of the fixed rod.

[0007] Preferably, the installation mechanism includes a connecting plate, the bottom of the connecting plate is fixedly connected to the top of the outer wall of the fixed rod, a fixed block is fixedly connected to the top of the connecting plate, round holes one are opened on both the left and right sides of the fixed block, springs one are fixedly connected inside the two round holes one, blocks are fixedly connected to the right sides of the two springs one, a limiting column is fixedly connected between the adjacent two blocks, a clamping plate is arranged on the top of the connecting plate, round holes two are opened on both the left and right sides inside the clamping plate, and a sub-tool body is fixedly connected to the top of the clamping plate.

[0008] Preferably, the cooling mechanism includes a plurality of support rings, the bottoms of the plurality of support rings are all fixedly connected to the right side of the fixed rod, a plurality of cooling channels are opened on the right side of the fixed rod, a fixed ring one is fixedly connected to the right side of the plurality of support rings, cooling pipes are fixedly connected inside the plurality of fixed rings one, filter nets are fixedly connected to the left ends of the inner sides of the plurality of cooling pipes, water outlet pipes are communicated with the left sides of the plurality of cooling pipes, and spray heads are fixedly connected to the left sides of the plurality of water outlet pipes.

[0009] Preferably, a fixing plate is fixedly connected to the middle of the front side of the fixed rod, and a warning sign is fixedly connected to the front side of the fixing plate.

[0010] Preferably, a plurality of connecting rods are fixedly connected to the left side of the outer wall of the fixed rod, and fixing rings two are fixedly connected to the tops of the plurality of connecting rods.

[0011] Preferably, a round plate is fixedly connected to the bottom of the front guide rod, and the round plate is designed to be smooth.

[0012] Preferably, notch openings are opened on both the left and right sides of the clamping plate, and springs two are fixedly connected inside the two notch openings.

[0013] Preferably, extrusion plates are fixedly connected to the right sides of the two springs two, and extrusion columns are fixedly connected between the adjacent two extrusion plates.

[0014] Preferably, adjacent ones of the plurality of positioning bars are fixedly connected to the outer wall of the leading rod at equal intervals, and the plurality of grooves correspond to the leading rod.

[0015] Preferably, the plurality of cooling channels are arranged at equal intervals on the right side of the fixed rod, and the outer walls of the plurality of cooling pipes are fixedly connected to the inside of the cooling channels at equal intervals.

[0016] The present invention provides a multifunctional hydraulic cylinder inner hole processing tool based on joint processing. It has the following beneficial effects:

[0017] 1. In the present invention, the fixed rod and the tool are closely connected by welding, and the installation hole ensures accurate positioning of the leading rod. During operation, the leading rod slides in the guiding sleeve by the cooperation of the positioning bar and the groove, ensuring that the tool does not deviate, improving the processing accuracy. The adjusting nut is linked with the threaded groove of the guiding sleeve, and rotating the adjusting nut can change the extending length of the leading rod to adjust the position of the tool tip, thereby enabling the tool to adapt to the processing of inner holes with different diameters.

[0018] 2. In the present invention, the connecting plate and the fixed rod are stably connected by welding to avoid displacement during processing. When installing the sub-tool body, the engaging plate is pushed forward, causing the block to be pressed, the first spring to be compressed for buffering and energy storage. After reaching the position, the first spring pushes the block into the second round hole to achieve a tight connection. The limiting column ensures accurate embedding of the block. When disassembling, press the block to remove it from the hole, and the engaging plate can be taken off, facilitating maintenance. Thus, it is possible to avoid frequently adjusting the processing parameters due to tool replacement, reducing the processing error and ensuring the quality consistency of the inner hole processing of the hydraulic cylinder.

[0019] 3. In the present invention, a coolant channel network is constructed in the cooling channel at the top of the fixed rod. The support ring is stably connected to ensure the stability of the first fixed ring. When the power device is started, the coolant is pressurized into the pipe, and the filter screen intercepts impurities to prevent the nozzle from being blocked. During processing, the tool generates heat, and the cooling pipe and the channel improve the heat exchange efficiency, taking away the heat and prolonging the tool life. The coolant after absorbing heat flows through the water outlet pipe to the nozzle for uniform cooling. Thus, stable tool performance helps to improve the accuracy and surface quality of the inner hole processing of the hydraulic cylinder, ensuring the high efficiency and quality of the entire processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 is a front view of the present invention;

[0022] Figure 3 is a right view of the present invention;

[0023] Figure 4 is a bottom view of the present invention;

[0024] Figure 5 is a schematic structural view of the groove of the present invention;

[0025] Figure 6 Schematic structural diagram of spring 1 of the present invention;

[0026] Figure 7 Schematic structural diagram of the filter screen of the present invention;

[0027] Figure 8 Schematic structural diagram of the extrusion column of the present invention.

[0028] Wherein, 1, fixed rod; 2, installation mechanism; 201, connecting plate; 202, fixed block; 203, circular hole 1; 204, spring 1; 205, clamping block; 206, limiting column; 207, clamping plate; 208, circular hole 2; 209, sub-knife body; 3, cooling mechanism; 301, cooling channel; 302, support ring; 303, fixed ring 1; 304, cooling pipe; 305, filter screen; 306, water outlet pipe; 307, nozzle; 4, tool; 5, installation hole; 6, front guide rod; 7, positioning strip; 8, guide sleeve; 9, groove; 10, thread groove; 11, adjusting nut; 12, fixing plate; 13, warning sign; 14, connecting rod; 15, fixed ring 2; 16, circular plate; 17, notch; 18, spring 2; 19, extrusion plate; 20, extrusion column. Specific embodiments

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to the appended Figure 1 and appended Figure 5 The present invention provides a multi-functional hydraulic cylinder inner hole processing tool for joint processing, including a fixed rod 1. A tool 4 is fixedly connected to the left side of the fixed rod 1. An installation hole 5 is opened at the bottom of the outer wall of the fixed rod 1. A front guide rod 6 is fixedly connected inside the installation hole 5. A plurality of positioning strips 7 are fixedly connected to the outer wall of the front guide rod 6. A guide sleeve 8 is slidably connected to the outer wall of the front guide rod 6. A plurality of grooves 9 are opened inside the guide sleeve 8. A thread groove 10 is opened on the front side of the guide sleeve 8. An adjusting nut 11 is threadedly connected inside the thread groove 10. An installation mechanism 2 is arranged on the top of the outer wall of the fixed rod 1. A cooling mechanism 3 is arranged on the right side of the fixed rod 1.

[0031] Specifically, the connection between the bottom of the fixed rod 1 and the tool 4 adopts a high-strength welding connection process. In the face of the high-strength cutting force impact frequently occurring during the machining of the inner hole of the hydraulic cylinder, the tool 4 is fixed on the fixed rod 1, always maintaining a precise cutting posture, ensuring the machining accuracy, and more avoiding the workpiece surface quality problems caused by the loosening of the tool 4. The installation hole 5 at the bottom of the outer wall of the fixed rod 1 provides an installation position for the leading rod 6, ensuring that the leading rod 6 can be accurately positioned. The multiple positioning strips 7 on the outer wall of the leading rod 6 and the grooves 9 inside the guide sleeve 8 form a stable and precise sliding connection mechanism. When the tool 4 shuttles through the inner hole of the hydraulic cylinder for cutting operations, the leading rod 6 slides smoothly along the guide sleeve 8. The limiting effect of the positioning strip 7 in the groove 9 makes the movement trajectory of the leading rod 6 always be a straight line, eliminating the hidden danger of the tool 4 being skewed and ensuring the machining accuracy. The combination of the thread groove 10 on the front side of the guide sleeve 8 and the adjusting nut 11 enables the operator to easily control the extended length of the leading rod 6 by gently rotating the adjusting nut 11 when facing the inner holes of hydraulic cylinders with different specifications, driving the tip of the tool 4 to quickly and accurately adjust to the adapted position. Whether it is a narrow-diameter inner hole that requires fine grinding or a large-diameter inner hole that requires rapid cutting, the adjustment can be achieved. This convenient adjustment method greatly expands the application scenarios of the tool 4, significantly enhancing its versatility and adaptability. The tool 4 rotates at high speed under the strong support of the fixed rod 1 for precise cutting. The leading rod 6 and the guide sleeve 8 ensure that the movement trajectory of the tool 4 is accurate. The adjusting nut 11 is adjusted as needed, enabling the tool 4 to operate efficiently under diverse and complex working conditions, quickly and precisely carving out the inner hole of the hydraulic cylinder that meets high standards, improving the machining efficiency and ensuring the product quality.

[0032] Please refer to the attached Figure 2 and the attached Figure 6 As shown in the figure, the installation mechanism 2 includes a connecting plate 201. The bottom of the connecting plate 201 is fixedly connected to the top of the outer wall of the fixed rod 1. The top of the connecting plate 201 is fixedly connected with a fixed block 202. Circular holes one 203 are opened on both the left and right sides of the fixed block 202. Spring one 204 is fixedly connected inside both of the two circular holes one 203. A clamping block 205 is fixedly connected to the right side of both of the two spring one 204. A limiting column 206 is fixedly connected between the adjacent two clamping blocks 205. A clamping plate 207 is arranged on the top of the connecting plate 201. Circular holes two 208 are opened on both the left and right sides inside the clamping plate 207. A sub-tool body 209 is fixedly connected to the top of the clamping plate 207.

[0033] Specifically, the connection between the right side of the connecting plate 201 and the top of the outer wall of the fixing rod 1 is achieved through high-precision welding technology. When the tool 4 is under huge impact and vibration forces during the cutting process, it ensures that the overall structure does not shake or displace at all. The fixing block 202 is located at the top of the connecting plate 201, and a first spring 204 is fixedly connected inside the circular hole 203 drilled on its upper and lower sides. The first spring 204 is made of an alloy material with elasticity and fatigue resistance. When installing the secondary tool body 209, the operator steadily pushes the engaging plate 207 towards the fixing block 202. The circular holes 208 on the left and right sides inside the engaging plate 207 gradually approach the locking block 205. The locking block 205 senses the pressure from the engaging plate 207 and starts to compress the first spring 204. The first spring 204 contracts, resolving the rigid collision between the locking block 205 and the engaging plate 207, avoiding damage to the components, and at the same time storing elastic potential energy. Until the engaging plate 207 precisely reaches the predetermined position, the first spring 204, relying on its elastic restoring force, steadily pushes the locking block 205 into the circular hole 208, achieving a tight connection between the engaging plate 207 and the fixing block 202. The limiting post 206 ensures that the locking block 205 accurately fits into the circular hole 208, double guaranteeing the accuracy and stability of the connection. When it is necessary to disassemble the secondary tool body 209, the operator only needs to gently press the locking block 205 to overcome the elastic force of the first spring 204, and the locking block 205 will obediently disengage from the circular hole 208. The engaging plate 207, released from the restraint of the locking block 205, can be easily disassembled from the fixing block 202. When the secondary tool body 209 needs to be replaced, repaired, or adjusted, it makes the disassembly and installation operations of the secondary tool body 209 simple and fast, greatly shortening the time required for maintaining the tool 4 and replacing components, improving production efficiency, and being able to maintain good stability and accuracy during multiple disassembly and installation processes, effectively reducing the processing errors caused by frequent tool 4 replacements.

[0034] Please refer to the attached Figure 1 and the attached Figure 7 As shown in FIGS. and FIGS., the cooling mechanism 3 includes a plurality of support rings 302. The left sides of the plurality of support rings 302 are fixedly connected to the right side of the fixing rod 1. A plurality of cooling channels 301 are opened on the right side of the fixing rod 1. The right sides of the plurality of support rings 302 are fixedly connected to a first fixing ring 303. A cooling pipe 304 is fixedly connected inside each of the plurality of first fixing rings 303. A filter screen 305 is fixedly connected to the left end of the inner side of each of the plurality of cooling pipes 304. A water outlet pipe 306 is connected to the left side of each of the plurality of cooling pipes 304. A nozzle 307 is fixedly connected to the left side of each of the plurality of water outlet pipes 306.

[0035] Specifically, a plurality of cooling channels 301 are opened at the top of the fixed rod 1. The left sides of the plurality of support rings 302 are fixedly connected to the right side of the fixed rod 1. The support rings 302 are evenly distributed, providing a stable supporting force for the upper fixing ring 1 303. The cooling pipe 304 fixedly connected inside the fixing ring 1 303 is the path for the coolant to circulate. Driven by an external power device, the coolant flows into the cooling pipe 304. The filter screen 305 at the inner bottom of the cooling pipe 304 plays a filtering role, capable of effectively intercepting impurity particles in the coolant and preventing them from clogging at the nozzle 307, ensuring that the coolant can be smoothly sprayed onto the tool 4. When the machining starts, the coolant flows in the cooling pipe 304, taking away the heat generated during the cutting process. The coolant passing through the cooling pipe 304 finally flows to the nozzle 307 through the water outlet pipe 306 connected on the left side. The spraying angle and range of the nozzle 307 can fully cover the key parts of the tool 4. The coolant is evenly sprayed on the surface of the tool 4 in a mist or fine stream shape from the nozzle 307, and the temperature of the tool 4 is rapidly reduced through heat exchange. The combined design of the plurality of cooling channels 301 and the cooling pipe 304 increases the contact area between the coolant and the tool 4 and the heat exchange efficiency, can more effectively reduce the temperature of the tool 4, reduce the wear and deformation of the tool 4 caused by overheating, and thus extend the service life of the tool 4. The setting of the filter screen 305 ensures the long-term stable operation of the cooling device and reduces the maintenance frequency due to clogging. The reasonable layout of the nozzle 307 ensures that all parts of the tool 4 can be fully cooled, improves the uniformity of cooling, helps to maintain the performance stability of the tool 4 during the machining process, and further improves the machining accuracy and surface quality of the inner hole of the hydraulic cylinder.

[0036] Please refer to the attached Figure 1 In the middle of the front side of the fixed rod 1, a fixing plate 12 is fixedly connected, and a warning sign 13 is fixedly connected to the front side of the fixing plate 12.

[0037] Specifically, the fixing plate 12 in the middle of the front side of the fixed rod 1 and the warning sign 13 thereon play an important role. The fixing plate 12 is made of a strong and lightweight alloy material and is tightly connected to the fixed rod 1 by welding or high-strength bolts to ensure stability during the machining process. The warning sign 13 usually has a prominent yellow or red background, and the warning information is marked in bold black font. Before the machine tool is started, the operator can clearly see the warning sign 13, always reminding himself / herself to pay attention to operation safety and avoid safety accidents caused by negligence, ensuring the smooth progress of the machining process.

[0038] Please refer to the attached Figure 3 and the attached Figure 4 On the left side of the outer wall of the fixed rod 1, a plurality of connecting rods 14 are fixedly connected, and fixing rings 2 15 are fixedly connected to the tops of the plurality of connecting rods 14.

[0039] Specifically, multiple connecting rods 14 are made of a strong metal material and are welded to the fixed rod 1 to ensure the stability of the connection. The fixing ring two 15 at the top thereof precisely surrounds the outside of the cooling pipe 304, and the cooling pipe 304 is firmly fixed by welding or a tight fit. During the processing, this fixing method can effectively prevent the cooling pipe 304 from being displaced or loosened due to vibration or external force, ensuring the stable circulation of the coolant in the cooling pipe 304, thereby continuously providing an efficient cooling effect for the tool 4, maintaining the normal working temperature of the tool 4, and extending the service life of the tool 4.

[0040] Please refer to the attached Figure 1 and the attached Figure 4 . A circular plate 16 is fixedly connected to the bottom of the leading rod 6, and the circular plate 16 has a smooth design.

[0041] Specifically, the smooth outer shape of the circular plate 16 at the bottom of the leading rod 6 can not only play a guiding role when the tool 4 enters the inner hole of the workpiece, but also effectively prevent the guiding sleeve 8 from accidentally moving away from the leading rod 6. The circular plate 16 is closely connected to the leading rod 6 and is made of a high-strength alloy material to ensure stability in a complex processing environment. During the processing, the guiding sleeve 8 slides on the leading rod 6. When subjected to external force or vibration, the circular plate 16 can block the excessive rightward displacement of the guiding sleeve 8 through appropriate dimensions and smooth edges, thereby maintaining the relative position relationship between the leading rod 6 and the guiding sleeve 8 stable and ensuring the normal operation and processing accuracy of the tool 4.

[0042] Please refer to the attached Figure 8 . Notches 17 are provided on both the left and right sides of the engaging plate 207, and two second springs 18 are fixedly connected to the interiors of the two notches 17.

[0043] Specifically, the engaging plate 207 is made of high-strength aluminum alloy. The notches 17 on its left and right sides are finely processed with precise dimensions and smooth surfaces. The second springs 18 inside the notches 17 are wound from high-elastic alloy steel wires and have good elastic recovery ability. During the installation of the tool 4, when the engaging plate 207 cooperates with other components, the second springs 18 can play a buffering and fine-tuning role to ensure the smoothness and accuracy of the engaging process. At the same time, it can compensate for the small dimensional deviations between components to a certain extent, enhancing the stability and reliability of the entire tool 4 structure.

[0044] Please refer to the attached Figure 8 . The right sides of the two second springs 18 are both fixedly connected to an extrusion plate 19, and an extrusion column 20 is fixedly connected between the two adjacent extrusion plates 19.

[0045] Specifically, when an operation needs to be performed on the clamping block 205, an external force acts on the extrusion plate 19. Due to the elasticity of the second spring 18, the extrusion plate 19 can squeeze the clamping block 205 inward. The extrusion columns 20 ensure the synchronous movement of the two extrusion plates 19, enabling the clamping block 205 to receive a uniform extrusion force. During the disassembly process of the tool 4, by pressing the extrusion plate 19, the second spring 18 contracts, driving the extrusion columns 20 to push the clamping block 205 away from the cooperating component, thereby achieving a fast and convenient disassembly operation and improving the efficiency and convenience of tool 4 maintenance.

[0046] Please refer to the appendix Figure 5 , adjacent ones of the multiple positioning bars 7 are fixedly connected to the outer wall of the leading rod 6 at equal intervals, and the multiple grooves 9 correspond to the leading rod 6.

[0047] Specifically, the positioning bars 7 are made of high-strength alloy steel and are attached to the outer wall of the leading rod 6 at equal intervals and firmly through a welding process. Their precise spacing and straight shape ensure the stability of the leading rod 6 during movement. The grooves 9 in the guide sleeve 8 are precision machined according to the dimensions of the leading rod 6 and the distribution of the positioning bars 7, and the two fit closely. When the tool 4 is working, it can effectively prevent the leading rod 6 from shifting or shaking, enabling the tool 4 to always run along a predetermined trajectory, thereby greatly improving the accuracy and quality of the inner hole machining of the hydraulic cylinder.

[0048] Please refer to the appendix Figure 7 , multiple cooling channels 301 are equally spaced on the right side of the fixed rod 1, and the outer walls of the multiple cooling pipes 304 are equally spaced and fixedly connected inside the cooling channels 301.

[0049] Specifically, the cooling channels 301 are equally spaced on the right side of the fixed rod 1 by using a high-precision machining process to ensure uniform distribution of the coolant. The cooling pipes 304 are made of a metal material with good heat conduction performance, and their outer walls are equally spaced and fixedly connected inside the cooling channels 301 through welding or special sealing connection methods, ensuring that the coolant does not leak during the circulation process and can fully exchange heat with the fixed rod 1, enabling all parts of the tool 4 to be evenly cooled during the machining process, effectively reducing the temperature of the tool 4, extending the service life of the tool 4, and improving the machining accuracy.

[0050] Working principle: The high-strength welded connection between the fixed rod 1 and the cutting tool 4 can effectively resist the strong forces generated during the cutting process. The mounting hole 5 can accurately determine the mounting position of the leading rod 6, ensuring that the relative position between the leading rod 6 and the fixed rod 1 remains stable. The positioning strip 7 on the outer wall of the leading rod 6 and the groove 9 inside the guiding sleeve 8 fit together to form a sliding structure. When the cutting tool 4 starts to engage in the machining of the inner hole of the hydraulic cylinder, as it moves inside the hole, the leading rod 6 will slide correspondingly inside the guiding sleeve 8. Restricted by the groove 9, the positioning strip 7 can only move along a specific established direction. The positioning strip 7 sets a precise track for the leading rod 6, ensuring its straight movement trajectory and preventing the cutting tool 4 from skewing, improving the machining accuracy, controlling the dimensional error within a very small range, and significantly reducing the production of defective products caused by the skewing of the cutting tool 4, effectively saving production costs and enhancing production efficiency. The cooperation between the adjusting nut 11 and the thread groove 10 of the guiding sleeve 8 further adds strong adaptability to the cutting tool 4. When facing the machining requirements of hydraulic cylinder inner holes with different diameter specifications, the operator only needs to manually rotate the adjusting nut 11 to change its position in the thread groove 10. Due to the close mechanical linkage relationship between the adjusting nut 11 and the leading rod 6, the change in the position of the adjusting nut 11 will directly drive the corresponding change in the extended length of the leading rod 6, thereby accurately adjusting the tip position of the cutting tool 4 and enabling the cutting tool 4 to quickly adapt to various machining scenarios, greatly expanding its application range. Whether it is for the fine cutting required for small-diameter inner holes or the rapid removal of materials from large-diameter inner holes, the cutting tool 4 can be adjusted. Supported by the fixed rod 1, the cutting tool 4 maintains a high-speed rotation state for cutting operations. The leading rod 6 and the guiding sleeve 8 ensure that the movement accuracy of the cutting tool 4 meets the requirements. As long as the machining requirements change, the adjusting nut 11 can immediately make corresponding adjustments, enabling the cutting tool 4 to not only efficiently remove the excess material in the inner hole of the hydraulic cylinder but also ensure that the machined inner hole surface has an ideal roughness and the dimensional accuracy fully meets the relevant standard requirements.

[0051] Meanwhile, the connecting plate 201 and the fixing rod 1 are welded together in a stable connection manner, forming a seamless and high-strength combination at the connection part between the connecting plate 201 and the fixing rod 1. During the machining process when the tool 4 rotates at high speed and bears a huge cutting force, the two are always closely connected without any relative displacement. When the sub-tool body 209 needs to be installed, the clamping plate 207 is pushed towards the fixing block 202. As the clamping plate 207 gradually approaches, it comes into contact with the clamping block 205. The clamping block 205 is subjected to the extrusion force from the clamping plate 207, and the first spring 204 contracts inward under the pressure, avoiding surface wear, deformation or even damage caused by rigid collision between the clamping block 205 and the clamping plate 207, and extending the service life of the components. The first spring 204 stores elastic potential energy during the compression process. When the clamping plate 207 precisely reaches the predetermined position, the first spring 204 releases the stored elastic potential energy, pushing the clamping block 205 accurately into the second round hole 208, realizing the stable connection between the clamping plate 207 and the fixing block 202. During this process, the limiting column 206 accurately defines the displacement boundary of the clamping block 205, ensuring that the clamping block 205 can be inserted into the second round hole 208 under the push of the first spring 204, eliminating the hidden danger of connection looseness caused by a slight deviation in the position of the clamping block 205. When the sub-tool body 209 needs to be disassembled, just press the clamping block 205 forcefully to overcome the elastic force of the first spring 204, and the clamping block 205 will disengage from the second round hole 208. The clamping plate 207 loses the restraint of the clamping block 205 and can be easily removed from the fixing block 202. The entire disassembly process is easy and smooth. When the sub-tool body 209 needs to be replaced, repaired or adjusted, the operator can quickly complete the relevant operations, greatly shortening the downtime and significantly improving the production efficiency. Even after multiple repeated disassembly and installation, it can still maintain good accuracy. After the tool 4 is replaced, there is no need to frequently make fine adjustments to the machining parameters, effectively reducing the machining errors introduced by the replacement of the tool 4, ensuring the consistency of the machining quality of the inner hole of the hydraulic cylinder, and providing a solid guarantee for large-scale and high-precision production.

[0052] Moreover, the multiple cooling channels 301 designed on the right side of the fixed rod 1 build the infrastructure for the transmission and distribution of the coolant. The cooling channels 301 are formed by high-precision machining processes, and their inner surfaces are smooth to ensure that the coolant can flow smoothly. A plurality of support rings 302 closely connected thereto are evenly distributed around the cooling channels 301 and are made of a high-strength material with good heat conduction performance, enabling the fixing ring 1-303 to carry the cooling pipe 304 and assisting in heat dissipation to a certain extent. When the external power device starts, the coolant surges into the cooling pipe 304 under the drive of pressure. The filter screen 305 at the inner bottom of the cooling pipe 304 is made of a fine metal wire mesh or polymer material, and the mesh size is precisely calculated to accurately intercept various impurity particles mixed in the coolant, whether they are metal chips, oil stains, or tiny dust generated during the processing. Without this filter screen 305, the impurities will flow with the coolant to the nozzle 307 and gradually accumulate at the nozzle 307, resulting in blocked coolant injection and unable to be evenly sprayed on the tool 4, ultimately greatly reducing the cooling effect. During the high-speed operation of the tool 4 in the machining process, intense friction occurs between the tool 4 and the workpiece, generating a large amount of heat. The coolant continuously circulates in the cooling pipe 304, continuously absorbing the heat dissipated by the tool 4. The coolant that has absorbed the heat reaches the nozzle 307 smoothly through the water outlet pipe 306. The spraying angle and range of the nozzle 307 are designed according to the shape, size, and key heat-generating parts of the tool 4, and can cover the key parts of the cutting edge and the tool face of the tool 4 in all directions without dead angles. When the coolant is evenly sprayed on the surface of the tool 4 in a fine stream from the nozzle 307, the cooling effect is further enhanced. This uniform cooling method ensures that the temperature of each part of the tool 4 is balanced and there are no hot spots of local overheating, maintaining the performance stability of the tool 4 during the machining process. When machining the inner hole of the hydraulic cylinder, it can cut more precisely, avoiding problems such as softening and deformation of the tool 4 caused by local overheating, which affect the machining accuracy and surface quality.

[0053] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-functional hydraulic cylinder inner hole machining tool based on joint machining, including a fixed rod (1), characterized in that, A tool (4) is fixedly connected to the left side of the fixed rod (1). An installation hole (5) is formed at the bottom of the outer wall of the fixed rod (1). A leading rod (6) is fixedly connected inside the installation hole (5). A plurality of positioning strips (7) are fixedly connected to the outer wall of the leading rod (6). A guiding sleeve (8) is slidably connected to the outer wall of the leading rod (6). A plurality of grooves (9) are formed inside the guiding sleeve (8). A threaded groove (10) is formed on the front side of the guiding sleeve (8). An adjusting nut (11) is threadedly connected inside the threaded groove (10). An installation mechanism (2) is arranged at the top of the outer wall of the fixed rod (1). A cooling mechanism (3) is arranged on the right side of the fixed rod (1); The installation mechanism (2) includes a connecting plate (201). The bottom of the connecting plate (201) is fixedly connected to the top of the outer wall of the fixed rod (1). A clamping plate (207) is arranged on the top of the connecting plate (201). A secondary tool body (209) is fixedly connected to the top of the clamping plate (207); The cooling mechanism (3) includes a plurality of support rings (302). The bottoms of the plurality of support rings (302) are all fixedly connected to the right side of the fixed rod (1). A first fixed ring (303) is fixedly connected to the right sides of the plurality of support rings (302). A cooling pipe (304) is fixedly connected inside each of the plurality of first fixed rings (303). A filter screen (305) is fixedly connected to the left end of the inner side of each of the plurality of cooling pipes (304); A plurality of cooling channels (301) are formed on the right side of the fixed rod (1). The outer walls of the plurality of cooling pipes (304) are equidistantly and fixedly connected inside the cooling channels (301); The left sides of the plurality of cooling pipes (304) are all communicated with a water outlet pipe (306). A spray head (307) is fixedly connected to the left side of each of the plurality of water outlet pipes (306); The plurality of cooling channels (301) are equidistantly formed on the right side of the fixed rod (1); The bottom of the fixed rod (1) is welded to the tool (4); The adjacent positioning strips (7) are equidistantly and fixedly connected to the outer wall of the leading rod (6). The plurality of grooves (9) correspond to the leading rod (6); Notches (17) are formed on the left and right sides of the clamping plate (207). A second spring (18) is fixedly connected inside each of the two notches (17). An extrusion plate (19) is fixedly connected to the right side of each of the two second springs (18). An extrusion column (20) is fixedly connected between the adjacent extrusion plates (19); 2. The multi-functional hydraulic cylinder inner hole machining tool based on joint machining according to claim 1, characterized in that, A fixed block (202) is fixedly connected to the top of the connecting plate (201). Round holes one (203) are formed on the left and right sides of the fixed block (202). A first spring (204) is fixedly connected inside each of the two round holes one (203). A clamping block (205) is fixedly connected to the right side of each of the two first springs (204). A limiting column (206) is fixedly connected between the adjacent clamping blocks (205). Round holes two (208) are formed on the left and right sides inside the clamping plate (207).

3. The multi-functional hydraulic cylinder inner hole machining tool based on joint machining according to claim 1, characterized in that, A fixing plate (12) is fixedly connected to the middle of the front side of the fixing rod (1), and a warning sign (13) is fixedly connected to the front side of the fixing plate (12).

4. The multi-functional hydraulic cylinder inner hole machining tool based on joint machining according to claim 1, characterized in that, A plurality of connecting rods (14) are fixedly connected to the left side of the outer wall of the fixing rod (1), and fixing rings II (15) are fixedly connected to the tops of the plurality of connecting rods (14).

5. The multi-functional hydraulic cylinder inner hole machining tool based on joint machining according to claim 1, wherein A circular plate (16) is fixedly connected to the bottom of the front guide rod (6), and the circular plate (16) is designed to be smooth.

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