Cutting machining device for valve sleeve of automobile power steering gear

Abstract

The invention relates to the technical field of intelligent equipment manufacturing, and particularly discloses an automobile power steering gear valve sleeve cutting machining device which comprises a machine body, and a machine case, a controller, a guide rail and a sliding table are arranged on the machine body; the clamping assembly comprises a clamping piece and a position adjusting piece, and the clamping assembly is used for fixing and adjusting the position of the valve sleeve; the cutting assembly comprises a power tool rest which is rotationally arranged on the outer side of the machine box, and a first machining tool and a second machining tool are arranged on the power tool rest. The calibration assembly comprises a mounting seat, a calibration piece and a calibration target, the mounting seat is arranged on the power tool rest, an insertion rod is fixedly arranged on the mounting seat, a calibration plate and a laser transmitter are arranged at the tail end of the insertion rod, the calibration target is located at the other end of the machine body, and when the inner hole and the valve sleeve are not coaxial, the position of a laser beam on the calibration target deviates; and the controller adjusts the position of the valve sleeve through the position adjusting piece. The device has the effects of improving the overall quality of a product and remarkably reducing the equipment manufacturing and maintenance cost at the same time.

Description

Technical Field

[0001] This application relates to the technical field of intelligent equipment manufacturing, and particularly to a cutting and processing device for an automotive power steering valve sleeve. Background Art

[0002] Currently, in the field of automotive manufacturing, the power steering gear is an important part of the modern automotive steering system, which can significantly reduce the driver's operating load and improve the flexibility and safety of steering. The power steering gear contains multiple precision components inside, and the valve sleeve is one of its core components, responsible for regulating the flow of hydraulic oil to achieve precise control of steering assistance. Since the valve sleeve needs to work stably for a long time under high-pressure and high-speed conditions, its machining accuracy and surface quality directly affect the performance of the power steering gear.

[0003] Currently, the cutting and processing of valve sleeves usually uses machine tools for precision cutting of the outer circle, inner hole, and oil groove. Common processing methods include turning, milling, drilling, and internal and external circle grinding, etc. In addition, in order to improve production efficiency, some manufacturers use automated processing units or flexible production lines to reduce manual intervention and process conversion time. For example, the Chinese patent with the publication number CN222660250U in the related art proposes a position adjustment system for adjusting the alignment of the workpiece and the milling groove blade, a workpiece clamping system, an automatic feeding system, and a power transmission system. Through the coordinated work of each system, the mechanization, precision, and consistency control of the steel pipe milling groove process are realized, and the deviation problem caused by manual operation is avoided.

[0004] However, in the actual production process, due to the complex flow channel and stepped hole structure inside the steering gear valve sleeve, the common method is to use a single-process processing method, and different tools or tooling fixtures are used to complete the processing of each part structure in sequence. Therefore, the internal cavity processing of the valve sleeve requires multiple clamping or tooling change operations to use different tools to complete the cutting processing of each part. Each clamping will introduce errors, and the accumulation of these errors will lead to deviations in machining accuracy and affect the quality of the final product. Although using a high-precision composite CNC machining center for processing can reduce the accumulation of errors, the high equipment cost of the composite CNC machining center is still unbearable for ordinary manufacturing enterprises. Therefore, there is an urgent need to develop a valve sleeve cutting and processing device with both high precision and low cost to improve the mass production quality and economic benefits of automotive steering gear valve sleeves. Summary of the Invention

[0005] This application provides a cutting and processing device for an automotive power steering valve sleeve. This device realizes the integrated operation of automatic positioning and cutting of the valve sleeve processing, and can ensure that the valve sleeve is always in the optimal processing posture, effectively avoiding the accumulation of errors caused by multiple clamping, improving the overall quality of the product, and at the same time significantly reducing the equipment manufacturing and maintenance costs.

[0006] A cutting and processing device for an automotive power steering valve sleeve provided by this application adopts the following technical solution: A cutting and processing device for an automotive power steering valve sleeve, comprising: A machine body, on one side of which there is a chassis, on which there is a controller, on the machine body there is a guide rail, and a slide table is slidably arranged on the guide rail; A clamping assembly, which includes a clamping member and a position adjusting member. An installation bracket is fixedly arranged on the slide table, the clamping member is fixedly arranged on the installation bracket, the position adjusting member is arranged on the clamping member, the position adjusting member is electrically connected to the controller, the clamping member is used to fix the valve sleeve to be processed, and the position adjusting member can adjust the position of the valve sleeve on the clamping member; A cutting assembly, which includes a power tool post. The power tool post is rotatably arranged on the outer side wall of the chassis, the power tool post is electrically connected to the controller, and a first processing tool and a second processing tool are respectively arranged on the power tool post; A calibration assembly, which includes a mounting seat, a calibration member and a calibration target. The mounting seat is arranged on the power tool post, a plug rod is fixedly arranged on the mounting seat, the calibration member is arranged on the plug rod, a calibration plate is arranged at one end of the plug rod away from the mounting seat, the calibration plate is movably connected to the calibration member, a laser emitter is arranged on the calibration plate, the calibration target is fixedly arranged at one end of the machine body away from the chassis, and the calibration target can receive the laser beam emitted by the laser emitter; when the plug rod extends into the inner hole, the calibration member is in movable contact with the inner hole wall. When the coaxiality between the inner hole wall and the valve sleeve is inconsistent, the laser emitted by the laser emitter to the calibration target will shift, so that the controller controls the position adjusting member to adjust the position of the valve sleeve on the clamping member.

[0007] By adopting the above technical solution, in this processing device, the cutting component is set as a power turret, and multiple different types of processing tools are arranged on the power turret. Then, the clamping component and the cutting component are relatively fixed on a platform by the mounting bracket on the slide table, so as to realize the continuous processing of different structural areas of the valve sleeve (such as inner hole, step, oil groove, etc.), reduce the number of tool changes and the process conversion time, avoid the error accumulation caused by frequent tooling changes and multiple clampings in the traditional process, greatly improve the machining coaxiality and dimensional accuracy, and thus improve the machining efficiency of the whole machine; In addition, the set calibration component can, after completing the first structural area (inner hole), use the cooperation of the laser and the calibration target to enable the processing device to automatically judge and correct the eccentric state of the valve sleeve, realize the closed-loop control of "calibrating while processing", effectively ensure the coaxiality of the machining center axis and the inner hole axis of the valve sleeve, greatly improve the product consistency, and compared with the composite CNC machining center that relies on high-precision transmission components and an overall integrated control system to achieve high-precision machining of multiple processes, this device effectively controls the coaxiality and positioning error of the workpiece during the machining process by setting an adjustable clamping component and cooperating with laser-assisted calibration, achieving machining accuracy similar to that of composite CNC equipment, but with a simpler structure, more intuitive control, and also does not require high-level professional programmers to operate. The control logic of this processing device is simple, the operation method is simple, and it can be directly integrated into the existing production line, greatly reducing the maintenance and operation burden, improving the on-site adaptability and promotion efficiency, and significantly reducing the equipment manufacturing and maintenance costs.

[0008] Optionally, the calibration member includes a tensioning bladder, the tensioning bladder is fixedly arranged at one end of the insertion rod away from the mounting seat, the tensioning bladder is made of a flexible material, a deformation part is arranged at one end of the tensioning bladder away from the insertion rod, the deformation part is arranged in a corrugated shape, the deformation part is communicated with the tensioning bladder, the calibration plate is connected to one end of the deformation part away from the insertion rod, the calibration plate is coaxially arranged with the insertion rod, multiple groups of the tensioning bladders are arranged on the insertion rod, the multiple groups of the tensioning bladders are circumferentially distributed with the insertion rod as the axis, and multiple groups of the deformation parts are all connected to the calibration plate.

[0009] By adopting the above technical solution, the calibration piece is set as a tensioning bladder and multiple groups are provided. The inner hole wall is fitted by using the flexible expansion mode of the tensioning bladder to realize automatic calibration of the center line. Since the calibration plate and the insertion rod are coaxially arranged and the deformation part is connected to the calibration plate, when there is no error between the inner hole and the valve sleeve, after multiple groups of tensioning bladders are unfolded, it is equivalent to aligning the laser emitter with the central axis of the inner hole. Once there is a coaxiality error between the two, the laser beam will deviate from the central axis of the valve sleeve, so as to more accurately reflect the coaxiality deviation between the inner hole of the valve sleeve and the outer shape of the valve sleeve. At the same time, the fast response performance of the flexible tensioning structure enables the detection process to achieve an efficient closed-loop of fast insertion - self-centering - laser detection, which helps to improve the detection beat and repeated positioning accuracy in mass production.

[0010] Optionally, the calibration assembly further includes a sealing member. A partition plate is arranged between the tensioning bladder and the deformation part. A liquid injection hole is penetratingly opened on the partition plate. The sealing member is arranged in the liquid injection hole. The sealing member can movably block the liquid injection hole. The sealing member includes a fixing frame, an elastic member and a sliding rod. The fixing frame is fixedly arranged in the liquid injection hole. The sliding rod is slidably penetrated through the fixing frame. The sliding rod is coaxially arranged with the liquid injection hole. A blocking part is fixedly arranged at one end of the sliding rod close to the deformation part. The blocking part movably covers the liquid injection hole. An anti-detachment part is fixedly arranged at one end of the sliding rod close to the tensioning bladder. The elastic member is arranged between the anti-detachment part and the fixing frame. One end of the elastic member is connected to the anti-detachment part, and the other end of the elastic member is connected to the fixing frame.

[0011] By adopting the above technical solution, the purpose of setting the partition plate and the sealing member is to separate the tensioning bladder from the deformation part. Since they have different deformation properties, under normal conditions, there is no error in the coaxiality between the inner hole and the valve sleeve. When multiple groups of tensioning bladders expand outwards simultaneously, the degree of abutting and extruding against the inner hole wall is the same. And after reaching the fixed volume of the tensioning bladder, the liquid pushes open the blocking part and enters the deformation part, so that all deformation parts generate deformation simultaneously, and the coaxiality between the calibration plate and the insertion rod will not change; if there is a coaxiality error between the two, then the extrusion degree of all tensioning bladders will be inconsistent, resulting in the premature deformation of some deformation parts, and the leading deformation of some deformation parts, so that the calibration plate deflects towards one side, and the position of the laser beam emitted by the laser emitter on the calibration target is offset, so as to achieve stable and accurate detection.

[0012] Optionally, the calibration assembly further includes a suction member disposed within the deformation portion. The suction member includes a fixed seat, a movable seat, and a pressure sensor. The fixed seat is fixedly provided on the partition plate. An iron sheet is fixedly embedded at one end of the fixed seat away from the partition plate. The movable seat is fixedly provided on the inner wall of the deformation portion, and the movable seat is located at one end of the deformation portion away from the insertion rod. A magnet is fixedly provided on the movable seat. The pressure sensor is disposed on the movable seat and is electrically connected to the controller. The movable seat and the fixed seat can be mutually attracted, and the pressure sensor is in movable abutment with one end of the fixed seat away from the partition plate.

[0013] By adopting the above technical solution, the suction member forms a stable suction structure in the initial state through the adsorption relationship between the iron sheet and the magnet. When the expansion bladder is not filled and the deformation portion does not deform, the movable seat and the fixed seat remain attracted, facilitating the preliminary positioning of the system. Thus, a trigger feedback mechanism for the deformation process of the deformation portion is formed, enabling the system to determine whether the expansion bladder has reached the stable filling state required for calibration and ensuring the authenticity and accuracy of the calibration data.

[0014] Optionally, the calibration target includes a substrate, a photosensitive plate, and an isolation cover. A support frame is fixedly provided at one end of the fuselage away from the chassis. The substrate is fixedly provided on the support frame. The photosensitive plate is fixedly provided on one side of the substrate facing the slide table. The photosensitive plate is made of a photoconductive material and is electrically connected to the controller. An isolation plate is fixedly provided on one side of the substrate facing the slide table. The isolation plate divides the photosensitive plate into multiple photosensitive areas. The multiple photosensitive areas are arranged at intervals along the center of the substrate. The isolation cover covers the substrate. The photosensitive plate and the isolation plate are both located in the isolation cover. The isolation cover is made of a colorless transparent material. When the calibration member calibrates and detects the inner hole of the valve sleeve, the laser beam reflected by the laser emitter can irradiate on a group of photosensitive areas, thereby detecting the coaxiality error between the inner hole and the valve sleeve according to the position where the laser beam irradiates.

[0015] By adopting the above technical solution, the calibration target is arranged on one side of the fuselage away from the chassis, which can effectively magnify the subtle position changes of the calibration plate. The multiple photosensitive areas formed by the isolation plate and the photosensitive plate realize the "quantification" of the laser landing coordinates. The laser beam falling on the photosensitive area is easier to be accurately captured, significantly improving the error detection accuracy and sensitivity. The setting of the isolation plate can avoid the mutual interference between the photosensitive areas. The transparent isolation cover is provided to prevent the machining dust and oil mist from contaminating or interfering with the photosensitive areas during the cutting process, improving the long-term stability and service life of the system.

[0016] Optionally, the calibration target further includes a photosensitive strip, which is fixedly arranged on the side of the partition plate facing away from the substrate, and the photosensitive strip is located at one end of the partition plate in the length direction. The photosensitive strip is made of a photoconductive material and is electrically connected to the controller.

[0017] By adopting the above technical solution, the partition plate serves as the dividing line for each photosensitive area, and the photosensitive strip is arranged on the partition plate, which can clearly distinguish the partition plate and the photosensitive area, clarify the boundary, further "quantify" the laser landing coordinates, avoid the occurrence of a blank period during the detection process, and thus significantly improve the resolution and response flexibility of error judgment.

[0018] Optionally, the clamping member is set as an electric four-jaw chuck. The four groups of jaws on the clamping member are sequentially set as the first jaw, the second jaw, the third jaw, and the fourth jaw. The position adjusting member includes a first extension part, a second extension part, and an oil pump. A first receiving groove is opened at one end of the first jaw close to the center of the clamping member. The first extension part is hermetically and slidably arranged in the first receiving groove. A first liquid storage cavity is formed between the first extension part and the first receiving groove. A first oil discharge pipe is arranged on the first jaw, and the first oil discharge pipe communicates with the first receiving groove. A second receiving groove is opened at one end of the third jaw close to the center of the clamping member. The second extension part is hermetically and slidably arranged in the second receiving groove. A second liquid storage cavity is formed between the second extension part and the second receiving groove. A second oil discharge pipe is arranged on the third jaw, and the second oil discharge pipe communicates with the second receiving groove. Both the first liquid storage cavity and the second liquid storage cavity are filled with hydraulic oil. The oil pump is arranged in the chassis and is electrically connected to the controller. One end of the oil pump communicates with the first oil discharge pipe, and the other end of the oil pump communicates with the second oil discharge pipe.

[0019] By adopting the above technical solution, a telescopic extension part driven by hydraulic oil is provided at the end of each jaw, and its displacement is controlled by an oil pump to realize dynamic fine adjustment of the clamping position of the valve sleeve. Moreover, all position adjusting members are electrically connected to the controller, and can cooperate with the detection results of the calibration component for automatic attitude correction, realizing an integrated closed-loop control of "measurement - adjustment - cutting", and improving the intelligent level and processing consistency of the entire system.

[0020] Optionally, the calibration member further includes a liquid storage tank, which is fixedly arranged in the chassis. A liquid injection pump is arranged on the liquid storage tank, and the liquid injection pump is electrically connected to the controller. The input end of the liquid injection pump communicates with the liquid storage tank. An infusion pipe is arranged at one end of the expansion bladder facing away from the deformation part, and the output end of the liquid injection pump communicates with the infusion pipe.

[0021] By adopting the above technical solution, the calibration piece is equipped with a liquid storage tank and a liquid injection pump, forming a complete liquid supply system, realizing the automatic liquid supply of the expansion bladder, ensuring the working stability of the expansion bladder, avoiding measurement distortion caused by uneven liquid injection volume, improving the automation degree of the device, and reducing the operation difficulty.

[0022] Optionally, there are two sets of the closing pieces and the liquid injection holes. The two sets of liquid injection holes are arranged at intervals along the middle line direction of the partition plate. The two sets of closing pieces are arranged in one-to-one correspondence with the two sets of liquid injection holes, and the blocking directions of the two sets of closing pieces are opposite.

[0023] By adopting the above technical solution, the liquid injection and discharge between the expansion bladder and the deformation part are realized, thereby enhancing the control flexibility of the calibration component and contributing to improving the repeated detection in batch production.

[0024] Optionally, there are two sets of the position adjusting pieces. The two sets of position adjusting pieces are arranged in a circular pattern with the clamping piece as the center, and the feature settings on the second claw and the fourth claw are the same as those on the first claw and the third claw.

[0025] By adopting the above technical solution, the adjustment accuracy is greatly improved by using the multi-point adjustment structure, and the attitude errors in multiple directions can be controlled simultaneously, avoiding the offset caused by single-point adjustment, and making the machining axis more accurately aligned.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the integration of multiple tools by the power turret and the fixed platform structure of the slide, this processing device realizes the continuous processing of multiple features of the valve sleeve, reduces the number of tool changes and clamping times, reduces error accumulation and improves processing accuracy. At the same time, compared with the innovative use of a laser calibration component to form a closed-loop control, the eccentricity of the workpiece is automatically corrected after the first process to ensure that the machining axis is coaxial with the inner hole axis; compared with a compound CNC machining center that relies on high-precision transmission components and an overall integrated control system to achieve high-precision machining of multiple processes, this device effectively controls the coaxiality and positioning error of the workpiece during processing by setting a clamping component with adjustable position and cooperating with laser-assisted calibration, achieving machining accuracy similar to that of compound CNC equipment, but with a simpler structure, more intuitive control, and does not require high-level professional programmers to operate. This processing device has a simple control logic, a simple operation method, and can be directly integrated into the existing production line, greatly reducing the maintenance and operation burden, improving the on-site adaptability and promotion efficiency, and significantly reducing the equipment manufacturing and maintenance costs; 2. The calibration component innovatively designs a partition plate and a linkage feedback mechanism. It realizes precise coaxiality detection through a dynamic fluid control and magnetic trigger mechanism. The partition plate isolates the expansion bladder from the deformation part. A sealing member (including a coaxial sliding rod, an elastic member, and a plugging part) is arranged in its liquid injection hole. The liquid flow direction is dynamically controlled by the hydraulic change of the expansion bladder. When the expansion bladder is filled to the threshold, it pushes open the plugging part, causing the deformation part to deform synchronously. If there is a coaxiality error, the expansion bladders are unevenly pressured, resulting in some deformation parts deforming in advance, triggering the calibration plate to deflect and detecting the error through a laser displacement sensor. At the same time, a magnetic feedback device is built into the deformation part, which consists of an iron sheet on the fixed seat and a magnet on the movable seat in an initial attracted state. When the deformation part deforms, the movable seat drives the pressure sensor to separate from the fixed seat, and the deformation state is real-time feedback to the controller through an electrical signal, forming a closed-loop detection system. The two mechanisms work together, ensuring the stability of the calibration process and improving the detection accuracy through a mechanical-electromagnetic dual feedback mechanism. 3. The calibration target is set on one side of the fuselage far from the chassis, which can effectively magnify the subtle position changes of the calibration plate. The multiple photosensitive areas formed by the isolation plate and the photosensitive plate realize the "quantification" of the laser landing coordinates. The laser beam falling on the photosensitive area is easier to be accurately captured, significantly improving the error detection accuracy and sensitivity. Setting the isolation plate can avoid the mutual interference between the photosensitive areas. The transparent isolation cover is set to prevent the machining dust and oil mist from contaminating or interfering with the photosensitive area during the cutting process, improving the long-term stability and service life of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the partial sectional structure of an embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the overall structure of the cutting component in an embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the overall structure of the calibration component in an embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the overall structure of the calibration target in an embodiment of the present application.

[0032] Figure 6 It is a schematic diagram of the overall structure of the clamping component in an embodiment of the present application.

[0033] Figure 7 It is a schematic diagram of the overall structure of the photosensitive area in an embodiment of the present application.

[0034] Figure 8 It is a schematic diagram of the overall structure of the valve sleeve in an embodiment of the present application.

[0035] Reference numerals: 1, fuselage; 11, chassis; 12, controller; 13, guide rail; 14, sliding table; 15, support frame; 2, clamping assembly; 21, clamping member; 211, first jaw; 212, second jaw; 213, third jaw; 214, fourth jaw; 22, position adjusting member; 221, first extension; 222, second extension; 223, oil pump; 224, first oil drain pipe; 225, second oil drain pipe; 23, mounting bracket; 24, displacement adjusting member; 241, base plate; 242, second motor; 243, adjusting lead screw; 3, cutting assembly; 31, power tool post; 32, first processing tool; 33, second processing tool; 4, calibration assembly; 41, mounting seat; 411, plug rod; 42, calibration member; 421, expansion bladder; 422, deformation part; 423, partition plate; 4231, liquid injection hole; 424, liquid storage tank; 425, liquid pump; 426, infusion pipe; 43, calibration target; 431, substrate; 432, photosensitive plate; 4321, first photosensitive area; 4322, second photosensitive area; 4323, third photosensitive area; 4324, fourth photosensitive area; 433, isolation cover; 434, isolation plate; 435, photosensitive strip; 436, photoelectric sensor; 44, calibration plate; 45, laser emitter; 46, sealing member; 461, fixing frame; 462, elastic member; 463, sliding rod; 4631, plugging part; 4632, anti - detachment part; 47, suction member; 471, fixing seat; 472, movable seat; 473, pressure sensor; 474, iron sheet; 475, magnet. Detailed implementation manners

[0036] The following will Figure 1-8 further elaborate on this application in conjunction with the attached

[0037] The embodiment of this application discloses a cutting and processing device for an automotive power steering valve sleeve.

[0038] Refer to Figure 1, The cutting and processing device for the valve sleeve of an automotive power steering gear includes a machine body 1, a cutting assembly 3, a calibration assembly 4, and a clamping assembly 2. The clamping assembly 2 and the cutting assembly 3 are both installed on the machine body 1. The cutting assembly 3 is located on one side of the clamping assembly 2, and the calibration assembly 4 is installed on the cutting assembly 3. The machine body 1 serves as the bearing foundation for the entire cutting and processing device of the valve sleeve of the automotive power steering gear. The cutting assembly 3 can perform compound cutting and processing on the valve sleeve. The calibration assembly 4 can detect the processing reference of the valve sleeve and can cooperate with the clamping assembly 2 to correct the processing reference of the valve sleeve. The clamping assembly 2 can be used to fix the valve sleeve to be processed on the machine body 1, and the clamping assembly 2 can also adjust the position of the valve sleeve on the clamping assembly 2 according to the coaxiality of the inner hole of the valve sleeve detected by the subsequent calibration assembly 4, so that the position of the valve sleeve is adjusted with the inner hole axis as the next processing reference, thereby better ensuring the coaxiality of the oil groove and the inner hole in the subsequent processing and improving the functionality and assembly accuracy of the valve sleeve.

[0039] Refer to Figure 1 and Figure 2 , in the embodiment of the present application, a chassis 11 is installed on one side of the machine body 1 in its length direction. The chassis 11 is used to install the electrical components in the entire cutting and processing device. A controller 12 is provided on the chassis 11. An inspection opening is provided on the side of the chassis 11 facing away from the machine body 1. Two groups of guide rails 13 are fixedly provided on the machine body 1. A sliding table 14 and a sliding drive member for driving the sliding table 14 to move are installed on the machine body 1. A chute is provided on the sliding table 14, and the chute is slidably connected to the guide rail 13. The sliding table 14 is slidably arranged on the guide rail 13 through the chute.

[0040] The sliding drive member includes a sliding lead screw, a guide rod, and a first motor. A plurality of bearing seats are fixedly provided on the machine body 1. The sliding lead screw is rotatably mounted on the machine body 1 through the bearing seats. The guide rod is fixedly mounted on the machine body 1. And the sliding lead screw and the guide rod are symmetrically arranged with the two groups of guide rails 13 as the midpoints. A first extension plate is provided on one side of the sliding table 14, and a second extension plate is provided on the other side of the sliding table 14. A lead screw nut is installed on the first extension plate, and the lead screw nut is threadedly connected to the sliding lead screw. A linear sliding bearing is installed on the second extension plate, and the linear sliding bearing is slidably connected to the guide rod. The first motor is fixedly provided on the inner wall of the chassis 11. The first motor can be a servo motor. The first motor is electrically connected to the controller 12. One end of the sliding lead screw extends into the chassis 11 and is fixedly connected to the output end of the first motor. The sliding drive member can drive the sliding table 14 to reciprocally slide on the guide rail 13.

[0041] Refer to Figure 2 and Figure 3, in the embodiment of the present application, the cutting assembly 3 is installed on the chassis 11. The cutting assembly 3 is set as a power turret 31. A driving member is built in the power turret 31. The driving member can also be set as a servo motor. The driving member is connected to the controller 12. The driving member can drive the power turret 31 to rotate, so as to realize tool switching. At the same time, the driving member can also drive the tool to rotate for cutting processing.

[0042] There are eight tool mounting stations provided on the power turret 31. The eight tool mounting stations are sequentially set as the first station to the eighth station. A first processing tool 32, a second processing tool 33 and a third processing tool are respectively provided on the power turret 31. A set of power tool holders are installed on the first station, the third station and the fifth station. The first processing tool 32, the second processing tool 33 and the third processing tool are all installed on the stations in sequence through a set of power tool holders. In the initial state, the position where the first station is located is set as the cutting processing station.

[0043] The first processing tool 32 is set as a drill bit, the second processing tool 33 is set as an internal groove milling cutter, and the third processing tool is set as a boring tool. The first processing tool 32 is used to machine the inner hole on the valve sleeve. The second processing tool 33 is used to machine the oil groove and oil hole on the inner hole. The third processing tool is used for finishing the inner hole.

[0044] Refer to Figure 3 , Figure 4 and Figure 5 , in the embodiment of the present application, the calibration assembly 4 includes a mounting seat 41, a calibration member 42, a sealing member 46, a suction member 47 and a calibration target 43. The mounting seat 41 is set as a rectangular block. The mounting seat 41 is detachably installed on the seventh station of the power turret 31 through bolts. A plug rod 411 is provided on the side of the mounting seat 41 facing away from the chassis 11. The plug rod 411 is symmetrically arranged with respect to the rotation axis of the power turret 31. One end of the plug rod 411 is fixedly connected to the mounting seat 41, and the other end of the plug rod 411 can extend into the inner hole of the valve sleeve. The calibration member 42 is installed at the end of the plug rod 411 away from the mounting seat 41.

[0045] The calibration member 42 includes a swelling capsule 421, a partition plate 423, a calibration plate 44, a liquid storage tank 424, and a liquid injection pump 425. The swelling capsule 421 is set as a fan-shaped columnar body. The swelling capsule 421 is made of a flexible material, and the final swelling volume of the swelling capsule 421 is set as a fixed volume. In the embodiment, it can be set to be made of neoprene. The swelling capsule 421 is fixedly arranged at the end of the plug rod 411 away from the mounting seat 41. The swelling capsule 421 is slightly smaller than half of the length of the valve sleeve.

[0046] Of course, in other embodiments of the present application, the swelling capsule 421 can also be made of silicone material. The material for making the swelling capsule 421 must meet the requirements of a waterproof material with a certain flexibility and a general elastic deformation ability.

[0047] One end of the expansion bladder 421 away from the insertion rod 411 is provided with a deformation part 422. The deformation part 422 is communicated with the expansion bladder 421. The deformation part 422 is arranged in a corrugated shape, and the cross-sectional shape of the deformation part 422 is arranged in a fan shape. The side of the deformation part 422 away from the axis of the insertion rod 411 is set as the first deformation area, and the side of the deformation part 422 close to the axis of the insertion rod 411 is set as the second deformation area. The deformation and extension ability of the first deformation area is much greater than that of the second deformation area.

[0048] The calibration plate 44 is fixedly arranged at one end of the deformation part 422 away from the expansion bladder 421, and the calibration plate 44 is coaxially arranged with the insertion rod 411. In this embodiment, multiple groups of expansion bladders 421 are arranged on the insertion rod 411. The multiple groups of expansion bladders 421 are distributed in a circular pattern with the insertion rod 411 as the axis, and the deformation parts 422 on the multiple groups of expansion bladders 421 are all fixedly connected to the calibration plate 44, that is, the calibration plate 44 is erected at one end of the insertion rod 411 away from the mounting seat 41 through multiple groups of deformation parts 422. A laser emitter 45 is fixedly arranged on the calibration plate 44. The laser emitter 45 is coaxially arranged with the insertion rod 411. The laser emitter 45 is electrically connected to the controller 12. The laser emitter 45 can emit a laser beam, and the laser beam points to the calibration target 43 installed on the other side of the fuselage 1.

[0049] Refer to Figure 2 In the embodiment of the present application, the liquid storage tank 424 is fixedly arranged in the chassis 11. In this embodiment, the liquid arranged in the liquid storage tank 424 is electronic fluorinated liquid. The liquid injection pump 425 is fixedly arranged on the liquid storage tank 424. The liquid injection pump 425 is electrically connected to the controller 12. The liquid injection pump 425 is provided with an input end and an output end. The input end of the liquid injection pump 425 is communicated with the liquid storage tank 424. One end of the expansion bladder 421 away from the deformation part 422 is provided with an infusion tube 426. A first conduit is fixedly arranged on the output end of the liquid injection pump 425. One end of the first conduit away from the liquid injection pump 425 is embedded in the insertion rod 411, and the first conduit is communicated with the infusion tube 426. The controller 12 can control the liquid injection pump 425 to inject liquid into the expansion bladder 421 and extract the liquid in the expansion bladder 421, so as to realize the expansion and contraction of the expansion bladder 421.

[0050] Refer to Figure 4, in the embodiment of the present application, the partition plate 423 is arranged between the expansion bladder 421 and the deformation part 422. Liquid injection holes 4231 are respectively and penetratingly formed in the partition plate 423. A sealing member 46 is arranged in the liquid injection holes 4231. The sealing member 46 can movably block the liquid injection holes 4231. The sealing member 46 includes a fixing frame 461, an elastic member 462 and a sliding rod 463. The fixing frame 461 is fixedly arranged in the liquid injection holes 4231. The sliding rod 463 is slidably arranged through the fixing frame 461. The sliding rod 463 is coaxially arranged with the liquid injection holes 4231. A blocking part 4631 is fixedly arranged at one end of the sliding rod 463 close to the deformation part 422. The blocking part 4631 movably covers the liquid injection holes 4231. An anti-disengagement part 4632 is fixedly arranged at one end of the sliding rod 463 close to the expansion bladder 421. The elastic member 462 is a spring. The elastic member 462 is arranged between the anti-disengagement part 4632 and the fixing frame 461. The elastic member 462 is sleeved on the sliding rod 463. One end of the elastic member 462 is fixedly connected with the anti-disengagement part 4632, and the other end of the elastic member 462 is fixedly connected with the fixing frame 461.

[0051] Certainly, in other embodiments of the present application, the elastic member 462 can also be a component with good elasticity such as an elastic rope. The function of the elastic member 462 is that when the expansion bladder 421 is not in a fully filled state, liquid will not enter the deformation part 422.

[0052] In this embodiment, there are two groups of liquid injection holes 4231 and sealing members 46. For the convenience of understanding, the two groups of liquid injection holes 4231 are respectively set as the first liquid injection hole and the second liquid injection hole, and the two groups of sealing members 46 are respectively set as the first sealing member and the second sealing member. The first liquid injection hole and the second liquid injection hole are linearly arranged along the central line direction of the partition plate 423. The first liquid injection hole is located above the second liquid injection hole. The first sealing member is arranged in the first liquid injection hole, and the second sealing member is arranged in the second liquid injection hole. And the blocking directions of the first sealing member and the second sealing member are opposite.

[0053] The suction member 47 is arranged in the deformation part 422. The suction member 47 includes a fixing seat 471, a movable seat 472 and a pressure sensor 473. The fixing seat 471 is fixedly arranged on one side of the partition plate 423 close to the deformation part 422. An iron sheet 474 is fixedly embedded at one end of the fixing seat 471 away from the partition plate 423. The movable seat 472 is fixedly arranged on the inner wall of the deformation part 422, and the movable seat 472 is located at one end of the deformation part 422 away from the expansion bladder 421. An annular magnet 475 is fixedly arranged on the movable seat 472. The pressure sensor 473 is fixedly embedded on the movable seat 472. The pressure sensor 473 is coaxially arranged with the annular magnet 475. The pressure sensor 473 is electrically connected with the controller 12. The movable seat 472 and the fixing seat 471 can be mutually attracted. The pressure sensor 473 is in movable abutment with the fixing seat 471.

[0054] Refer toFigure 5 In the embodiment of the present application, the calibration target 43 includes a substrate 431, a photosensitive plate 432, a photosensitive strip 435, and an isolation cover 433. A support frame 15 is fixedly provided at one end of the fuselage 1 away from the chassis 11, and the substrate 431 is fixedly provided on the support frame 15. The substrate 431 is set as a square plate, and the photosensitive plate 432 is set as a square and its area is slightly smaller than that of the substrate 431. The photosensitive plate 432 is fixedly provided on the side of the substrate 431 facing the slide 14. The photosensitive plate 432 is made of a photoconductor, and the photosensitive plate 432 is electrically connected to the controller 12. An isolation plate 434 is fixedly provided on the side of the isolation plate 434 facing the slide 14. The photosensitive strip 435 is fixedly provided on the side of the isolation plate 434 away from the substrate 431, and the photosensitive strip 435 is located at one end of the isolation plate 434 in the length direction. The photosensitive strip 435 is made of a photoconductor, and the photosensitive strip 435 is electrically connected to the controller 12.

[0055] In this embodiment, two groups of isolation plates 434 are provided, and the two groups of isolation plates 434 are vertically crossed. One group of isolation plates 434 is vertically crossed with the length direction of the substrate 431, and the other group of isolation plates 434 is vertically crossed with the width direction of the substrate 431, and the intersection of the two groups of isolation plates 434 coincides with the center of the substrate 431. Four groups of photosensitive strips 435 are provided, and the four groups of photosensitive strips 435 are distributed in a circle with the intersection of the two groups of isolation plates 434 as the center. The two groups of isolation plates 434 evenly separate the photosensitive plate 432 into four groups of photosensitive areas, and the four groups of photosensitive areas are arranged at intervals along the center of the substrate 431. A photoelectric sensor 436 is provided at the intersection of the two groups of isolation plates 434, and the photoelectric sensor 436 is electrically connected to the controller 12.

[0056] The isolation cover 433 is set in a square shape. The isolation cover 433 is set on the substrate 431. The photosensitive plate 432 and the isolation plate 434 are both located in the isolation cover 433. The isolation cover 433 is made of colorless and transparent material.

[0057] Reference Figure 6 In the embodiment of the present application, the clamping assembly 2 includes a displacement adjustment member 24, a mounting frame 23, a clamping member 21 and a position adjustment member 22. The displacement adjustment member 24 is installed on the slide 14. The displacement adjustment member 24 includes a base plate 241, a second motor 242 and an adjusting screw 243. The base plate 241 is slidably arranged on the slide 14. The second motor 242 is fixed at one end of the length direction of the slide 14. The second motor 242 can be a servo motor. Two sets of bearing supports are arranged on the slide 14. The adjusting screw 243 is rotatably mounted on the slide 14 through the bearing supports. One end of the adjusting screw 243 is fixedly connected to the output end of the second motor 242. A connecting portion is fixed on the base plate 241, and the connecting portion is threadedly connected to the adjusting screw 243.

[0058] The mounting bracket 23 is fixedly arranged on the bottom plate 241. Both the clamping member 21 and the position adjusting member 22 are mounted on the mounting bracket 23. In this embodiment, the clamping member 21 is arranged as an electric four-jaw chuck. The position adjusting member 22 includes a first extension portion 221, a second extension portion 222 and an oil pump 223. The four groups of jaws on the clamping member 21 are respectively set as a first jaw 211, a second jaw 212, a third jaw 213 and a fourth jaw 214. One end of the first jaw 211 close to the center of the clamping member 21 is provided with a first accommodation groove. The first extension portion 221 is hermetically and slidably arranged in the first accommodation groove. A first liquid storage cavity is formed between the first extension portion 221 and the first accommodation groove. A first oil discharge pipe 224 is arranged on the first jaw 211. The first oil discharge pipe 224 communicates with the first accommodation groove.

[0059] One end of the third jaw 213 close to the center of the clamping member 21 is provided with a second accommodation groove. The second extension portion 222 is hermetically and slidably arranged in the second accommodation groove. A second liquid storage cavity is arranged between the second extension portion 222 and the second accommodation groove. A second oil discharge pipe 225 is arranged on the third jaw 213. The second oil discharge pipe 225 communicates with the second accommodation groove. The first liquid storage cavity and the second liquid storage cavity are filled with hydraulic oil. The oil pump 223 is fixedly arranged on the mounting bracket 23. The oil pump 223 is electrically connected to the controller 12. One end of the oil pump 223 communicates with the end of the first oil discharge pipe 224 far from the first jaw 211. The other end of the oil pump 223 communicates with the end of the second oil discharge pipe 225 far from the third jaw 213.

[0060] The first oil discharge pipe 224 and the second oil discharge pipe 225 have the same pipe diameter, and the pipe diameter of the first oil discharge pipe 224 is much smaller than the cross-sectional area of the accommodation groove.

[0061] In this embodiment, two groups of position adjusting members 22 are provided. The two groups of position adjusting members 22 are circumferentially distributed along the clamping member 21. Therefore, the feature settings on the second jaw 212 and the fourth jaw 214 are the same as the feature settings on the first jaw 211 and the third jaw 213. In addition, the oil pump 223 adopts a micro gear pump with a small displacement and a stable output power.

[0062] More specifically, when the calibration component 4 calibrates the machined inner hole, first, the power turret 31 rotates to switch the plug 411 to the cutting machining station. The plug 411 aligns with the valve sleeve fixed by the clamped component 2. The sliding screw rod drives the slide 14 to approach the power turret 31, so that the plug 411 is inserted into the inner hole of the valve sleeve, and the calibration plate is exactly located at the end of the valve sleeve away from the chassis 11. Then, the liquid injection pump 425 injects liquid into the expansion bladder 421, causing the expansion bladder 421 to gradually expand and press against the inner hole wall. As the liquid injection pump 425 continuously injects liquid into the expansion bladder 421, the pressure inside the expansion bladder 421 increases, and the liquid will push up the blocking part 4631 on the first seal 46, making the expansion bladder 421 communicate with the deformation part 422. When the liquid in the deformation part 422 is injected to a certain extent, it will push open the fixed seat 471 and the movable seat 472, and the controller 12 receives the signal of the pressure release from the pressure sensor 473.

[0063] It should be noted here that, firstly, in the actual machining process, the machining error requirements for different structural areas on the same valve sleeve are different. Especially for precision parts like valve sleeves, the machining precision error requirements for their inner holes and oil grooves are inconsistent because the functions of different structural areas are the same, which also makes the corresponding machining precision error requirements different. Therefore, if machining continues on the inner hole with existing machining errors based on the original machining reference, the machining errors of all subsequent structural areas will be accumulated, and over time, the quality of the product will be greatly affected. Secondly, the plug 411 and the tool for machining the inner hole are both installed on the same power turret 31, and when the position is switched, the plug 411 coincides with the position of the first machining tool 32. If there is no error in the coaxiality between the inner hole and the valve sleeve, when multiple expansion bladders 421 expand outwards simultaneously at this time, the degree of contact and extrusion between all expansion bladders 421 and the inner hole wall should be the same, and all the suction components 47 in the deformation parts 422 are disconnected simultaneously. If there is a coaxiality error between the two, then the extrusion degree of all expansion bladders 421 is inconsistent, but the suction components 47 in some deformation parts 422 will disconnect in advance, and some deformation parts 422 will deform first, so that the position of the laser beam emitted by the laser emitter 45 on the calibration target 43 is shifted.

[0064] Refer to Figure 7 As a reference, the horizontal partition plate 434 is set as the X-axis reference, the vertical partition plate 434 is set as the Y-axis reference, and the photoelectric sensor 436 set at the intersection of the two groups of partition plates 434 is set as the origin, so as to establish a plane coordinate system on the substrate 431, and the four photosensitive areas are set as the first photosensitive area 4321, the second photosensitive area 4322, the third photosensitive area 4323, and the fourth photosensitive area 4324 in this way.

[0065] When the laser beam falls on the positive and negative directions of the Y-axis reference, the controller 12 controls the oil pump 223 acting on the first jaw 211 to be in the liquid injection input state; When the laser beam falls on the negative and reverse direction of the Y-axis reference, the controller 12 controls the oil pump 223 acting on the first jaw 211 to be in the liquid extraction output state; When the laser beam falls on the positive and negative directions of the X-axis reference, the controller 12 controls the oil pump 223 acting on the second jaw 212 to be in the liquid extraction output state; When the laser beam falls on the negative and reverse direction of the X-axis reference, the controller 12 controls the oil pump 223 acting on the second jaw 212 to be in the liquid extraction output state.

[0066] At this time, once the laser beam is offset on the calibration target 43, the two sets of position adjusting members 22 provided on the clamping member 21 will adjust the position of the valve sleeve, so that the laser emitter 45 on the calibration plate 44 is directly opposite to the photoelectric sensor 436. At this time, the original processing reference with the axis of the valve sleeve itself is adjusted to the inner hole axis as the new processing reference, so as to effectively avoid the accumulation of processing errors and affect the processing quality of the final product.

[0067] The implementation principle of the valve sleeve cutting and processing device of the automotive power steering gear in the embodiment of the present application is as follows: the valve sleeve to be processed is fixed on the fuselage 1 through the clamping member 21, and the processing tool provided on the power tool rest 31 performs cutting processing on the valve sleeve. After the inner hole of the valve sleeve is processed, the controller 12 controls the power tool rest 31 to rotate, and switches the plug rod 411 equipped with the calibration member 42 to the cutting processing station. The controller 12 controls the slide table 14 to approach the chassis 11 until the calibration plate 44 is located at one end of the valve sleeve. Then the controller 12 controls the liquid injection pump 425 to inject liquid into the expansion bladder 421 until all the suction members 47 are disconnected. The controller 12 adjusts the position of the valve sleeve according to the position where the laser beam falls on the calibration target 43. When the laser beam falls on the photoelectric sensor 436, it means that the position adjustment is completed. The liquid injection pump 425 extracts liquid outward, and the slide table 14 drives the valve sleeve away from the chassis 11. When the calibration member 42 is completely separated from the valve sleeve, the controller 12 controls the power tool rest 31 to rotate, and the second processing tool 33 is switched to the cutting processing station. Finally, the controller 12 controls the slide table 14 to approach the chassis 11 again, and the second processing tool 33 processes the oil groove on the inner hole wall.

[0068] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automotive power steering valve sleeve cutting and machining device, characterized in that, Comprising: A fuselage, on one side of which there is a chassis, on which there is a controller, on the fuselage there is a guide rail, and a slide is slidably arranged on the guide rail; A clamping assembly, the clamping assembly includes a clamping member and a position adjusting member, an installation bracket is fixedly arranged on the slide, the clamping member is fixedly arranged on the installation bracket, the position adjusting member is arranged on the clamping member, the position adjusting member is electrically connected to the controller, the clamping member is used to fix the valve sleeve to be processed, and the position adjusting member can adjust the position of the valve sleeve on the clamping member; A cutting assembly, the cutting assembly includes a power tool rest, the power tool rest is rotatably arranged on the outer side wall of the chassis, the power tool rest is electrically connected to the controller, and a first processing tool and a second processing tool are respectively arranged on the power tool rest; A calibration assembly, the calibration assembly includes a mounting base, a calibration member and a calibration target, the mounting base is arranged on the power tool rest, a plug rod is fixedly arranged on the mounting base, the calibration member is arranged on the plug rod, a calibration plate is arranged at one end of the plug rod away from the mounting base, the calibration plate is movably connected to the calibration member, a laser emitter is arranged on the calibration plate, the calibration target is fixedly arranged at one end of the fuselage away from the chassis, and the calibration target can receive the laser beam emitted by the laser emitter; when the plug rod extends into the inner hole, the calibration member is in movable abutment with the inner hole wall, when the coaxiality between the inner hole wall and the valve sleeve is inconsistent, the laser emitted by the laser emitter to the calibration target will shift, so that the controller controls the position adjusting member to adjust the position of the valve sleeve on the clamping member.

2. The cutting and processing device for the valve sleeve of an automotive power steering gear according to claim 1, characterized in that: The calibration member includes a tensioning bladder, the tensioning bladder is fixedly arranged at one end of the plug rod away from the mounting base, the tensioning bladder is made of a flexible material, a deformation part is arranged at one end of the tensioning bladder away from the plug rod, the deformation part is arranged in a corrugated shape, the deformation part is communicated with the tensioning bladder, the calibration plate is connected to one end of the deformation part away from the plug rod, the calibration plate is coaxially arranged with the plug rod, multiple groups of tensioning bladders are arranged on the plug rod, and the multiple groups of tensioning bladders are circumferentially distributed with the plug rod as the axis, and multiple groups of deformation parts are all connected to the calibration plate.

3. The cutting and processing device for the valve sleeve of an automotive power steering gear according to claim 2, characterized in that: The calibration assembly further includes a sealing member, a partition plate is arranged between the tensioning bladder and the deformation part, a liquid injection hole is penetrated and opened on the partition plate, the sealing member is arranged in the liquid injection hole, and the sealing member can movably block the liquid injection hole, the sealing member includes a fixing frame, an elastic member and a sliding rod, the fixing frame is fixedly arranged in the liquid injection hole, the sliding rod is slidably penetrated through the fixing frame, the sliding rod is coaxially arranged with the liquid injection hole, a blocking part is fixedly arranged at one end of the sliding rod close to the deformation part, the blocking part movably covers the liquid injection hole, an anti-detachment part is fixedly arranged at one end of the sliding rod close to the tensioning bladder, and the elastic member is arranged between the anti-detachment part and the fixing frame, one end of the elastic member is connected to the anti-detachment part, and the other end of the elastic member is connected to the fixing frame.

4. A cutting and processing device for an automotive power steering valve sleeve according to claim 2, characterized in that: The calibration assembly further includes a suction member disposed within the deformation portion. The suction member includes a fixed seat, a movable seat, and a pressure sensor. The fixed seat is fixedly provided on the partition plate, and an iron sheet is fixedly embedded at one end of the fixed seat away from the partition plate. The movable seat is fixedly provided on the inner wall of the deformation portion, and the movable seat is located at one end of the deformation portion away from the insertion rod. A magnet is fixedly provided on the movable seat, and the pressure sensor is disposed on the movable seat. The pressure sensor is electrically connected to the controller. The movable seat and the fixed seat can be mutually attracted, and the pressure sensor is in movable contact with one end of the fixed seat away from the partition plate.

5. A cutting and machining device for an automotive power steering valve sleeve according to claim 1, characterized in that: The calibration target includes a substrate, a photosensitive plate, and an isolation cover. A support frame is fixedly provided at one end of the fuselage away from the chassis. The substrate is fixedly provided on the support frame, and the photosensitive plate is fixedly provided on one side of the substrate facing the sliding table. The photosensitive plate is made of a photoconductive material and is electrically connected to the controller. An isolation plate is fixedly provided on one side of the substrate facing the sliding table. The isolation plate divides the photosensitive plate into multiple photosensitive regions, and multiple groups of the photosensitive regions are arranged at intervals along the center of the substrate. The isolation cover is provided over the substrate, and the photosensitive plate and the isolation plate are both located within the isolation cover. The isolation cover is made of a colorless and transparent material. When the calibration member performs calibration detection on the inner hole of the valve sleeve, the laser beam reflected by the laser emitter can irradiate on a group of photosensitive regions, so as to detect the coaxiality error between the inner hole and the valve sleeve according to the position where the laser beam irradiates.

6. The cutting and machining device for the valve sleeve of an automotive power steering gear according to claim 5, wherein: The calibration target further includes a photosensitive strip fixedly provided on the side of the isolation plate facing away from the substrate, and the photosensitive strip is located at one end of the isolation plate in the length direction. The photosensitive strip is made of a photoconductive material and is electrically connected to the controller.

7. A cutting and machining device for an automotive power steering valve sleeve according to claim 1, characterized in that: The clamping member is provided as an electric four-jaw chuck. The four jaws on the clamping member are sequentially set as a first jaw, a second jaw, a third jaw, and a fourth jaw. The position adjusting member includes a first extension portion, a second extension portion, and an oil pump. A first receiving groove is formed at one end of the first jaw close to the center of the clamping member. The first extension portion is hermetically and slidably disposed within the first receiving groove, and a first liquid storage cavity is formed between the first extension portion and the first receiving groove. A first drain pipe is provided on the first jaw, and the first drain pipe communicates with the first receiving groove. A second receiving groove is formed at one end of the third jaw close to the center of the clamping member. The second extension portion is hermetically and slidably disposed within the second receiving groove, and a second liquid storage cavity is formed between the second extension portion and the second receiving groove. A second drain pipe is provided on the third jaw, and the second drain pipe communicates with the second receiving groove. Hydraulic oil is filled in both the first liquid storage cavity and the second liquid storage cavity. The oil pump is disposed within the chassis and is electrically connected to the controller. One end of the oil pump communicates with the first drain pipe, and the other end of the oil pump communicates with the second drain pipe.

8. An automotive power steering valve sleeve cutting device according to claim 2, characterized in that: The calibration component also includes a liquid storage tank, which is fixed in the chassis. An injection pump is provided on the liquid storage tank, and the injection pump is electrically connected to the controller. The input end of the injection pump is communicated with the liquid storage tank. An infusion tube is provided at the end of the expansion bag away from the deformation part, and the output end of the injection pump is communicated with the infusion tube.

9. The cutting and processing device for the valve sleeve of an automotive power steering gear according to claim 3, wherein: The sealing members and the injection holes are arranged in two groups, and the two groups of injection holes are arranged at intervals along the center line direction of the partition plate. The two groups of sealing members are arranged in a one-to-one correspondence with the two groups of injection holes, and the blocking directions of the two groups of sealing members are arranged in opposite directions.

10. A cutting and processing device for an automotive power steering valve sleeve according to claim 7, characterized in that: The position adjusting members are provided in two groups, and the two groups of position adjusting members are arranged in a circle with the clamping member as the center, and the feature settings on the second clamping jaw and the fourth clamping jaw are the same as the feature settings on the first clamping jaw and the third clamping jaw.

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