An apparatus for abrasive flow finishing of a turbocharger housing

Abstract

The application discloses an equipment for polishing a turbocharger shell by abrasive flow finishing, and belongs to the technical field of machining. In view of the problems of low processing efficiency, poor precision and the like of a complex flow channel in a traditional turbocharger shell inner cavity, the equipment integrates six modules of workpiece machining, self-adaptive plugging clamping, numerical control, liquid supply and waste liquid recovery. An upper and lower double-layer mounting table structure is adopted, workpieces are quickly positioned by positioning pins and fixed by clamping devices; a plugging module is driven by a motor to drive a toothed synchronous belt, a linear air cylinder and a floating plugging head to accurately adhere to a workpiece flange, and high-pressure sealing is realized in cooperation with a high-temperature-resistant rubber pad; a numerical control system collects flow channel topography in cooperation with an industrial probe camera, feeds back the pressure of a hydraulic pump, and forms closed-loop control. The equipment sequentially completes high-pressure grinding of the abrasive flow medium, washing of the cleaning liquid and classification and recovery of the waste liquid, and realizes uniform polishing of the complex inner cavity. The equipment has high clamping efficiency, reliable sealing and good machining consistency, and is suitable for precision finishing machining of large batches of turbocharger shells.

Description

Technical Field

[0001] This invention relates to the field of abrasive flow machining technology, specifically to a device for finishing complex internal cavity surfaces in components such as turbochargers based on abrasive flow technology. Background Technology

[0002] In production and daily life, turbocharger housings are typically made of aluminum alloy or cast iron. Their internal intake and exhaust channels have complex shapes, with numerous curved surfaces and narrow areas. The roughness of these internal surfaces, residual burrs, and casting defects can severely affect airflow efficiency, generate eddies and noise, and reduce the overall performance and reliability of the turbocharger. This seriously hinders the widespread application of turbochargers in aerospace, automotive, and military industries.

[0003] Traditional methods for treating the inner surface of turbine housings include manual polishing, sandblasting, or vibratory grinding. Manual polishing is inefficient, inconsistent, and struggles to reach every corner of complex flow channels; sandblasting can alter the dimensional accuracy of critical areas and poses environmental pollution problems; vibratory grinding has limited effectiveness for turbine housings with deep cavities and blind holes. Abrasive flow machining utilizes a viscoelastic medium to carry abrasive particles under pressure through the workpiece's inner cavity. When the pressure is sufficient, it can achieve uniform and precise machining of complex inner surfaces, exhibiting "contour" machining characteristics. However, existing general-purpose abrasive flow equipment suffers from problems such as cumbersome clamping and positioning, sealing difficulties, unreasonable medium circulation paths, and low efficiency in switching between different workpiece models when dealing with specific workpieces like turbine housings, hindering the application of this technology in mass production.

[0004] Therefore, there is an urgent need to develop an automated abrasive flow precision machining equipment specifically designed for the inner surface of turbine housings, capable of rapid clamping, reliable sealing, efficient machining, and waste liquid separation and recycling. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a device for high-efficiency abrasive flow finishing of turbocharger housings. The invention features two tabletops, an upper and a lower one. A worktable is mounted on the upper tabletop and fixed to the mounting platform by support columns. During processing, the workpiece is mounted on the worktable, its position determined by positioning holes and pins. A clamping device presses the workpiece firmly against the worktable surface, and sealing cylinders are used to clamp and seal both sides of the workpiece. A hydraulic device sequentially injects abrasive flow finishing fluid and cleaning fluid into the workpiece through pre-reserved channels on the worktable. Working inside the workpiece, the abrasive flow finishing fluid makes full contact and friction with the inner surface of the turbine housing, resulting in better finishing of the turbine housing's inner surface. Finally, the fluid flows through channels within the sealing blocks into a pre-designed material collection bin, achieving a high-efficiency, pollution-free processing and recycling process.

[0006] This invention is achieved through the following technical solution: a device for abrasive finishing of a turbocharger housing, comprising a workpiece processing section, a workpiece sealing and clamping section, a worktable, a CNC section, and a liquid supply and collection section. The workpiece processing section consists of a worktable, support columns, a feed pipe connector, gaskets, a liquid supply pipe, positioning holes, and positioning pins. The workpiece sealing and clamping section comprises clamping device one, clamping device two, base support plate one, base support plate two, linear cylinder one, linear cylinder two, cylinder sealing block one, cylinder sealing block two, sealing gasket one, sealing gasket two, discharge pipe connector one, discharge pipe connector two, hose one, hose two, sliding guide rail one, and sliding... The system consists of a second moving guide rail, a first motor, and a second motor. The abrasive flow and cleaning fluid supply and collection section comprises an abrasive flow supply tank, an abrasive flow waste fluid collection tank, a cleaning fluid supply tank, a cleaning fluid waste fluid collection tank, a third servo drive motor, a coupling, a hydraulic pump, a ball valve, a second supply pipe, a third supply pipe, a fourth recovery pipe, a fifth recovery pipe, and a waste fluid transition collection box. The base support plate has threaded holes, and the clamping linear cylinder is fixed to the slide rail guide plate by threads. The slide rail guide plate is structurally connected to the guide rail. The mounting platform has threaded holes, and the CNC table, abrasive flow supply tank, hydraulic pump, motor, and abrasive flow waste fluid collection tank are mounted and fixed to the mounting platform through the threaded holes on the plate.

[0007] Further, as a preferred embodiment, the abrasive flow precision machining device for the inner surface of a turbine housing according to claim 1 is characterized in that: the workpiece machining section consists of support columns, a worktable, a feed pipe connector, a washer, a positioning hole, and a positioning pin; the worktable is fixed to the four support columns through threaded holes, and the support columns are fixed to the mounting platform through threaded holes; the surface of the machining table has multiple through holes; the positioning pin is a quick-release conical pin, which is detachably inserted into the through holes to match the bolt hole positions of different housing models; the feed pipe connector clamping washer is fixed to the support plate through threaded holes; the workpiece is positioned on the worktable by the positioning pin; the workpiece is fastened to the worktable by a clamping device; the worktable has a reserved abrasive inlet for easy abrasive entry.

[0008] Further, as a preferred embodiment, the abrasive flow precision machining device for the inner surface of a turbine housing according to claim 1 is characterized in that: the workpiece sealing and clamping part is composed of cylinder sealing block one, cylinder sealing block two, sealing gasket one, sealing gasket two, linear cylinder one, linear cylinder two, sliding guide rail one, sliding guide rail two, motor one, motor two, discharge pipe connector one, discharge pipe connector two, hose one, hose two; linear cylinder one and linear cylinder two are respectively fixed to the sliding guide rail via threaded holes; the sliding guide rail is mounted on the base support plate; the base support plate is fixed to the mounting table via threaded holes; cylinder sealing block one and cylinder sealing block two are respectively fixed to linear cylinder one and linear cylinder two via threaded holes; sealing gasket one and sealing gasket two are respectively fitted onto cylinder sealing block one and cylinder sealing block two via interference fit. On the block, discharge pipe connector one and discharge pipe connector two are fixed to cylinder sealing block one and cylinder sealing block two respectively through threaded holes. The hoses on both sides are sleeved on discharge pipe connector one and discharge pipe connector two through clamps. After the workpiece is installed in place, the left and right sealing devices are precisely focused by CNC technology, the sealing cylinder extends, clamps and seals the inlet and exhaust flanges of the turbocharger housing, reduces the time of manual clamping and the scratches caused by manual clamping on the workpiece surface, and improves processing efficiency. The abrasive enters the workpiece through the reserved hole of the worktable, and then flows out through the sealing block and the hose. Through the above installation and cooperation, the inside of the workpiece can be made to be in complete contact with the abrasive, so that the abrasive liquid can completely pass through the inner surface of the workpiece, so that it can be fully ground, resulting in high working efficiency. The sealing part is made of rubber gasket, which is not easy to scratch the workpiece and is easy to replace.

[0009] Furthermore, as a preferred embodiment, the abrasive flow precision machining device for the inner surface of a turbine housing according to claim 1 is characterized in that: the CNC part further constitutes a closed-loop control system composed of a CNC table, a computer, and an industrial probe camera. The CNC table is fixed to one side of the upper mounting platform by bolts; the computer is electrically connected to the CNC table and the industrial probe camera via a data cable; the industrial probe camera is mounted in front of the machining area via an adjustable bracket; the computer has a built-in motion control card and image processing module, used to preset abrasive flow machining parameters and send control commands to the CNC table. After receiving the commands, the CNC table drives the servo motors of each axis of the machine tool to perform feed motion. Simultaneously, the industrial probe camera acquires images of the internal flow channels of the turbine housing and feeds them back to the computer. By comparing the preset model with the actual machining morphology, adaptive compensation is achieved during the machining process. This CNC system has a fast response speed and high positioning accuracy, effectively ensuring the consistency and uniformity of the inner surface machining, and significantly improving the degree of automation and yield.

[0010] Furthermore, as a preferred embodiment, the abrasive flow precision machining device for the inner surface of a turbine housing according to claim 1 is characterized in that: the liquid supply section and the waste liquid collection section cooperate to form a fluid circulation system. The liquid supply section consists of an abrasive flow liquid supply tank, a cleaning fluid supply tank, a servo drive motor (3), a hydraulic pump, a liquid supply pipe (1), and a liquid supply pipe (2). Both the abrasive flow liquid supply tank and the cleaning fluid supply tank are fixed to the mounting platform and the upper mounting platform respectively via threaded holes. The servo drive motor (3) and the hydraulic pump are also fixed to the upper mounting platform via threaded holes. The servo drive motor (3) drives the hydraulic pump via a coupling. This pump has good flow performance, adjustable output flow, and advantages such as smooth movement, low noise, high working efficiency, and high volumetric efficiency. The liquid supply tank is connected to the hydraulic pump via the liquid supply pipe, and the hydraulic pump is then connected to the feed pipe joint via pipe (5). The overall structure is simple and the power is high. The output is stable and economical. Correspondingly, the waste liquid collection section consists of an abrasive flow waste liquid collection tank, a cleaning fluid waste liquid collection tank, a recovery pipe, and a waste liquid collection transition box. Both the waste liquid collection tank and the waste liquid collection transition box are fastened to the lower mounting platform by threads. The discharge pipe connector one and the discharge pipe connector two are respectively connected to the two sides of the waste liquid collection transition box through hoses. The waste liquid collection transition box is then connected to the corresponding waste liquid collection tank through pipe three and pipe four. This device not only has a simple structure and can effectively control the waste liquid flow to avoid cross-mixing of abrasive flow waste liquid and cleaning fluid, but also realizes the integrated operation of processing and recycling, significantly improving work efficiency and economy.

[0011] Furthermore, as a preferred embodiment, the abrasive flow precision machining device for the inner surface of a turbine housing according to claim 1 is characterized in that: the mounting platform is welded from two parts, upper and lower, and the mounting platform is provided with threads, wherein the workpiece machining part, the base support plate, the motor device, the hydraulic pump, the liquid supply tank, the waste liquid collection tank, and the CNC table are all installed and fixed to the mounting platform through threaded holes. The devices installed on this mounting platform are all fixed by threaded connection. This fixing method is a detachable fixing connection, with a simple structure, easy and reliable connection, convenient disassembly and assembly, simple operation, material saving, and good economy. This fixing method is stable and reliable. Attached Figure Description

[0012] Figure 1 Schematic diagram of the overall structure of the equipment for abrasive flow finishing of turbocharger housing

[0013] Figure 2 Top view of equipment for abrasive finishing of turbocharger housing

[0014] Figure 3 Schematic diagram of the workpiece sealing and clamping section

[0015] Figure 4 Schematic diagram of the base and sliding track structure

[0016] Figure 5Schematic diagram of the workbench structure

[0017] Figure 6 A schematic diagram of the interface between the liquid supply pipeline and the workbench, and the cross-sectional view of the interface.

[0018] Figure 7 Schematic diagram of a pipeline ball valve

[0019] Figure 8 A cross-sectional schematic diagram of a ball valve.

[0020] In the diagram: 1—Mounting platform; 2—CNC table; 3—Industrial probe camera; 4—Support base; 5—Sealing part one; 501—Sliding guide rail one; 502—Gear one; 503—Linear cylinder one; 504—Motor one; 505—Toothed synchronous belt one; 506—Sealing block one; 507—Sealing pad one; 6—Abrasive flow supply tank; 7—Cleaning fluid supply tank; 8—Sealing and clamping part two; 801—Sliding guide rail two; 802—Gear two; 803—Linear cylinder two; 804—Motor two; 805—Toothed synchronous belt two; 806—Sealing block two; 807—Sealing pad two; 9—Supply pipe 10—Abrasive flow waste liquid recovery tank; 11—Pipeline 3; 12—Pipeline 4; 13—Cleaning fluid waste liquid recovery tank; 14—Hose 1; 15—Waste liquid transition collection box; 16—Hose 2; 17—Workpiece processing section; 1701—Workbench; 1702—Positioning hole; 1703—Positioning pin; 1704—Clamping device; 1705—Support column; 1706—Feed pipe connector; 1707—Fastening connector; 1708—Sealing gasket; 18—Computer; 19—Pipeline 1; 20—Ball valve; 21—Hydraulic pump; 22—Coupling; 23—Pipeline 2; 24—Servo drive motor 3. Detailed Implementation

[0021] This invention discloses an apparatus for abrasive finishing of a turbocharger housing. To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be explained in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention. Other embodiments obtained by those skilled in the art without inventive effort are all within the protection scope of this invention.

[0022] The processing device described in this invention is mainly constructed by integrating six functional modules, specifically including: a processing module, a flexible end-sealing module, a computer control module, a constant pressure supply module for abrasive flow and cleaning fluid, a waste liquid classification and recycling module, and an equipment support workbench. The assembly of each module follows a logical sequence from bottom to top and from main to auxiliary components. The specific installation process is as follows:

[0023] Step 1: Construction of the device's basic workbench. The mounting platform (1) serves as the supporting base, with multiple sets of standardized threaded holes and pipeline clearance through holes pre-set on it. During installation, the industrial probe camera (3), support base (4), linear cylinder one (503), abrasive flow supply tank (6), cleaning fluid supply tank (7), linear cylinder two (803), abrasive flow waste liquid recovery tank (10), cleaning fluid waste liquid recovery tank (13), waste liquid transition collection box (15), workbench support column (1705), hydraulic pump mill (21), and servo drive motor three (24) are rigidly locked with bolts using the standardized threaded holes on the mounting platform to ensure the positional accuracy and connection strength of the installation structure. The system start / stop control console (2) is embedded in a convenient position on the side of the mounting platform, thus completing the construction of the entire machine's foundation.

[0024] Step 2: Installation of the workpiece processing module. The workpiece processing section (17) mainly consists of a worktable (1701), positioning holes (1702), positioning pins (1703), clamping devices (1704), support columns (1705), feed pipe connectors (1706), fastening connectors (1707), and sealing gaskets (1708). During installation, firstly, the four support columns (1705) are vertically fixed to the mounting platform (1) with threads, and then the worktable (1701) is bolted to the top of the support columns; subsequently, the clamping devices (1704) are installed on both sides of the worktable; then, the positioning pins are precisely fitted into the pre-set pin holes on the worktable for precise workpiece positioning; finally, the feed supply pipe (9) and sealing gaskets (1708) are aligned with the feed pipe connector (1706) at the center of the worktable and fixedly connected by fastening connectors (1707). At this point, the installation of the workpiece processing section is complete.

[0025] Step 3: Installation of the workpiece adaptive sealing module. The workpiece sealing part (5) mainly consists of a sliding guide rail (501), a gear (502), a linear cylinder (503), a motor (504), a toothed synchronous belt (505), a sealing block (506), and a high-temperature resistant sealing gasket (507) with good sealing performance. During installation, firstly, the support base (4) is bolted to the pre-reserved threaded hole on the mounting table (1); then, the sliding guide rail (501), gear (502), and motor (504) are bolted to the support base, and the linear cylinder (507) is installed. 503) is fixedly installed on the sliding rail together with the sliding guide plate through the threaded interface. Then, the gear 1 (502), linear cylinder 1 (503) and motor 1 (504) are connected through the toothed synchronous belt 1 (505). Next, the high-temperature resistant sealing gasket 1 (504) with good sealing performance is fitted to the end of the sealing head in an interference fit to enhance the sealing performance. It is then installed on the linear cylinder 1 (503) together with the sealing block 1 (506). Finally, the discharge pipe joint on the side of the sealing head is fixedly connected to the discharge hose 1 (16) to prevent high pressure leakage. The installation process of the workpiece sealing part 2 (8) is completely consistent with the above steps. It only needs to be installed in a mirror symmetrical manner. At this point, the setting of the sealing mechanism at both ends is completed.

[0026] Step 4: Computer Control Module Installation. The computer control module mainly consists of a CNC console (2), an industrial probe camera (3), and a computer (18). During installation, the CNC console (2) and the industrial probe camera (3) are fixed with bolts. The CNC console (2) is installed on the side of the mounting platform, which facilitates the control of the movement of the workpiece sealing part, avoids the need for manual control of the sealing part, and achieves higher precision. The industrial probe camera is used to monitor the processing morphology of the flow channel inside the turbine housing and feeds the image data back to the computer. The computer compares and analyzes the data with the standard digital model features through algorithms, and adjusts the extrusion pressure of the hydraulic pump according to the deviation feedback, thereby realizing closed-loop quality control.

[0027] Step 5: Installation of the constant pressure fluid supply drive module. The abrasive flow and cleaning fluid supply section consists of an abrasive flow supply tank (6), a cleaning fluid supply tank (7), pipe one (19), pipe two (23), a ball valve (20), a hydraulic pump (21), a coupling (22), and a servo drive motor three (24). During installation, first place the abrasive flow supply tank (6) and the cleaning fluid supply tank (7) at the low position of the equipment, connect one end of the suction pipe to the outlet of the two storage tanks respectively, and connect the other end to the suction port of the high pressure hydraulic pump (21), and connect the ball valve (20) in series in the pipeline to control the flow of the medium. Subsequently, the servo drive motor (20) is fixed to the worktable with bolts, and its output shaft is rigidly connected to the input shaft of the high-pressure hydraulic pump (21) through the transmission coupling (22). During installation, the coaxiality of the two shafts must be strictly calibrated to prevent abnormal wear or vibration caused by eccentric operation. Finally, one end of the high-pressure conveying pipe is connected to the outlet flange of the hydraulic pump (21), and the other end extends through the worktable to the workpiece processing area, and is locked and sealed with the feed pipe joint (1706) of the workpiece processing part (17) through the fastening connector (1707). At this point, the high-pressure conveying channel for the abrasive flow medium is completed.

[0028] Step Six: Installation of the Abrasive Flow Separation and Recovery Module. The abrasive flow waste liquid collection section consists of discharge hose one (16), discharge hose two (14), waste liquid collection transition box (15), and return pipe three (11) and return pipe four (12). First, select two discharge hoses. Align their connectors with the outlets reserved in the workpiece sealing parts (5) and (8) respectively, and tighten them with hose clamps to ensure the sealing of the connection. Connect the other end of the hose to the inlet of the waste liquid collection transition box (15). Then, use bolts to firmly fix the transition box to the table under the installation platform. Finally, connect the outlet of the transition box to the inlet of the abrasive flow waste liquid tank and the cleaning fluid waste liquid tank one by one through the return pipe three (11) and the return pipe four (12). At this point, a complete closed fluid recovery path is built, which can effectively ensure that the grinding media and cleaning waste liquid go their separate ways and are stably returned to the storage system.

[0029] This device adopts a vertical stacking architecture, and the specific automated operation steps are as follows:

[0030] Phase 1: Manual loading and CNC operation. The operator places the turbine housing vertically on the carrier and uses the process hole on the workpiece base plate to cooperate with the positioning pin (1703) on the worktable (17) to achieve gravity self-centering. Then, the clamping device (1704) is used to firmly fix the workpiece to be processed on the worktable. After the workpiece is in place, the operator leaves the work area with both hands, and the system is ready to start.

[0031] Second stage: Channel closure. Trigger the start button (12) to enter fully automatic mode. Through precise control of the CNC table, the sealing part and the turbine housing structure are precisely aligned. The linear cylinder 1 (503) of the workpiece sealing part 1 (5) and the linear cylinder 2 (603) of the workpiece sealing part 8 extend forward, driving the floating sealing head to tightly fit the two ends of the workpiece interface, thus constructing a sealed high-pressure inner cavity. When the CNC table indicator light turns green, the machine can be started.

[0032] The third stage: media circulation and precision grinding. The ball valve in the control pipeline is switched to form a stable passage. After all the actuators return the original position signal, the operation is started. The servo drive motor three (24) runs, driving the high-pressure hydraulic pump (21) to extract the abrasive flow media in the abrasive flow storage tank (6). The media is transported to the feed pipeline (9) through pipeline one (19) and is jetted into the inner wall flow channel of the turbine housing in the form of a high-speed jet. The surface burrs are peeled off by shearing force and friction. The processed waste liquid and residue are discharged through the outlets at both ends and flow into the waste liquid collection box (15) through hose one (16) and hose two (14). Finally, it flows back to the abrasive flow waste liquid collection tank (10) through pipeline three (11). The cleaning fluid processing is the same as the above steps, only the ball valve switches of different pipelines need to be changed. After the processing is completed, the system is reset, the workpiece is replaced, and the mirror-level polishing treatment of the internal flow channel of the housing is completed.

[0033] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An apparatus for abrasive finishing of a turbocharger housing, characterized in that, The equipment consists of a workpiece processing section, a workpiece sealing and clamping section, a worktable, a CNC section, an abrasive flow storage and collection section, and a cleaning fluid storage and collection section. The workpiece processing section comprises a worktable, support columns, a feed pipe connector, washers, fastening connectors, pipe 1, positioning holes, and positioning pins. The workpiece sealing and clamping section comprises clamping device 1, clamping device 2, base support plate 1, base support plate 2, linear cylinder 1, linear cylinder 2, cylinder sealing block 1, cylinder sealing block 2, sealing gasket 1, sealing gasket 2, discharge pipe connector 1, discharge pipe connector 2, hose 1, hose 2, sliding guide rail 1, sliding guide rail 2, and motor 1. The system consists of two components: a motor and a grinding fluid. The grinding fluid and cleaning fluid storage and collection section comprises a grinding fluid supply tank, a grinding fluid waste fluid collection tank, a cleaning fluid supply tank, a cleaning fluid waste fluid collection tank, a motor unit, a coupling, a hydraulic pump, a ball valve, a second and third supply pipe, a fourth and fifth recovery pipe, and a waste fluid transition collection box. The base support plate has threaded holes, and the clamping linear cylinder is fixed to the slide rail guide plate by threads. The slide rail guide plate is structurally connected to the guide rail. The mounting platform has threaded holes, and the CNC table, grinding fluid supply tank, hydraulic pump, motor unit, and grinding fluid waste fluid collection tank are installed and fixed to the mounting platform through the threaded holes on the plate.

2. The apparatus for abrasive finishing of a turbocharger housing as described in claim 1, characterized in that... The workpiece processing section consists of support columns, a worktable, a feed pipe connector, washers, and positioning pins. The worktable is fixed to the four support columns via threaded holes, and the support columns are fixed to the mounting platform via threaded holes. The processing table surface has multiple through holes. The positioning pins are quick-release tapered pins, which are detachably inserted into the through holes to match the bolt hole positions of different housing models. The feed pipe connector clamping washer is fixed to the support plate via threaded holes. The workpiece is positioned on the worktable by the positioning pins. The worktable has a pre-reserved abrasive inlet for easy abrasive entry. The use of CNC technology reduces the time spent on manual clamping, reduces scratches on the workpiece surface caused by manual clamping, and improves processing efficiency.

3. The apparatus for abrasive finishing of a turbocharger housing as described in claim 1, characterized in that... The workpiece sealing and clamping part consists of cylinder sealing block one, cylinder sealing block two, sealing gasket one, sealing gasket two, linear cylinder one, linear cylinder two, sliding guide rail one, sliding guide rail two, motor one, motor two, discharge pipe connector one, discharge pipe connector two, hose one, hose two. Linear cylinder one and linear cylinder two are respectively fixed to the sliding guide rail via threaded holes. The sliding guide rail is mounted on the base support plate, and the base support plate is fixed to the mounting table via threaded holes. Cylinder sealing block one and cylinder sealing block two are respectively fixed to linear cylinder one and linear cylinder two via threaded holes. Sealing gasket one and sealing gasket two are respectively fitted onto cylinder sealing block one and cylinder sealing block two via interference fit. On the cylinder plugging block, discharge pipe connector one and discharge pipe connector two are fixed to cylinder plugging block one and cylinder plugging block two respectively through threaded holes. The hoses on both sides are sleeved on discharge pipe connector one and discharge pipe connector two through clamps. After the workpiece is installed in place, the plugging cylinder extends to clamp and seal the inlet and exhaust flanges of the turbocharger housing. The abrasive enters the workpiece through the reserved hole on the worktable, and then flows out through the plugging block and the hose. Through the above installation and cooperation, the inside of the workpiece can be made to be in complete contact with the abrasive, so that the abrasive flow can completely pass through the inner surface of the workpiece, so that it can be fully ground, with high working efficiency. The plugging part is made of rubber gasket, which is not easy to scratch the workpiece and is easy to replace.

4. The apparatus for abrasive finishing of a turbocharger housing as described in claim 1, characterized in that... The liquid supply section consists of an abrasive flow liquid supply tank, a cleaning fluid supply tank, a motor unit three, a hydraulic pump, a liquid supply pipe one, and a liquid supply pipe two. The abrasive flow liquid supply tank is fixed to the mounting platform via threaded holes. The motor unit is fixed to the upper mounting platform via threaded holes. The hydraulic pump is fixed to the upper mounting platform via threaded holes. The motor unit three is connected to the hydraulic pump via a coupling. This hydraulic pump is driven by an electric motor, making it an electric hydraulic pump. It has good flow performance, the output flow can be adjusted as needed, it operates smoothly, has low noise, and high working efficiency and volumetric efficiency. The liquid supply tank and the hydraulic pump are connected via liquid supply pipes, and the hydraulic pump is connected to the feed pipe connector via pipe five. This liquid supply device has a simple structure, stable power output, good economy, and high working efficiency.

5. The apparatus for abrasive finishing of a turbocharger housing as described in claim 1, characterized in that... The waste liquid collection section consists of an abrasive flow waste liquid collection tank, a cleaning fluid waste liquid collection tank, a recovery pipe, and a waste liquid collection transition box. The waste liquid collection tank is fixed to the lower mounting platform by threads, and the waste liquid collection transition box is also fixed to the lower mounting platform by threads. Discharge pipe connector one and discharge pipe connector two are connected to the waste liquid collection transition box through flexible hoses on both sides. The waste liquid collection transition box is connected to the waste liquid collection tank through pipe three and pipe four. This device has a simple structure for collecting waste liquid, can effectively control the waste liquid flow, avoids mixing of abrasive flow waste liquid and cleaning fluid, has good economic efficiency, high working efficiency, and realizes integrated work and recovery.

6. The apparatus for abrasive finishing of a turbocharger housing as described in claim 1, characterized in that... The mounting platform is welded together from two parts, upper and lower. The mounting platform is threaded, and the workpiece processing part, base support plate, motor device, hydraulic pump, liquid supply tank, waste liquid collection tank, and CNC table are all fixed to the mounting platform through threaded holes. All devices installed on this mounting platform are fixed by threaded connection. This fixing method is a detachable fixing connection, with a simple structure, easy and reliable connection, convenient disassembly and assembly, simple operation, material saving, and good economy. This fixing method is stable and reliable.

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