Turbocharger assembly automatic centering device

Abstract

The application discloses a turbocharger combined installation automatic centering device, which comprises a support frame, a displacement assembly and a centering assembly. The support frame is used for integral installation support. The displacement assembly is installed on the support frame and can move in horizontal and vertical directions. The centering assembly is provided with a core body combined installation clamping jaw module for grabbing a turbocharger core body, a floating mechanism plate, a bolt air cylinder. The floating mechanism plate is matched with a linear bearing through a steel ball roller pin, so that the clamping jaw module can flexibly float in a radial plane. The bolt air cylinder can extend and lock the floating mechanism plate in the grabbing stage, so as to ensure the grabbing positioning accuracy. The radial deviation is automatically eliminated during the pressing process, the precise centering is realized, the parts are prevented from being damaged, the structure is reliable, and the applicability is strong.

Description

Technical Field

[0001] This invention relates to the field of turbocharger technology, and more specifically, to an automatic centering device for turbocharger assembly. Background Technology

[0002] The turbocharger is a key component of modern internal combustion engines, and its performance and reliability directly affect engine efficiency. For example... Figure 2 As shown, the turbocharger mainly consists of the turbine casing (b) and the core body (a). The assembly of these two components is a crucial step. If there is a misalignment in their coaxiality, it will cause friction and scraping between the rotor system (turbine impeller and compressor impeller) and stationary parts (such as sealing rings and air seals), leading to component damage, reduced efficiency, and even the complete failure of the turbocharger.

[0003] Currently, most mainstream assembly processes rely on manual visual positioning or simple guide pins for initial positioning, followed by forced tightening with bolts. This method has obvious drawbacks, and in automated assembly, the rigid limiting and pressing of robotic arms can more easily lead to forced hard contact between the core body and the turbine casing end face, causing scratches or even breakage of the components. Summary of the Invention

[0004] This invention provides an automatic alignment device for turbocharger assembly, which can automatically eliminate radial deviation during the pressing process of the core body and the turbine housing, achieve precise alignment, avoid damage to parts, and is applicable to automated assembly lines.

[0005] To achieve the above objectives, the technical solution of the present invention is: an automatic alignment device for turbocharger assembly, comprising:

[0006] The support frame is constructed as a high-rigidity gantry frame, including the top plate;

[0007] The displacement assembly, mounted on the support frame, includes a guide shaft fixing plate that can move relative to the top plate along the X-axis and Z-axis directions. The guide shaft fixing plate has support parts at the four corners below it. The support parts are connected to the four corner edges of the guide shaft fixing plate. The side of the support parts facing the guide shaft fixing plate has a groove.

[0008] The centering component includes a fixed plate and a floating plate arranged from bottom to top. The core assembly clamping jaw module is connected below the fixed plate. The floating plate has steel ball roller pins at the four corners of its lower side. The floating plate is assembled between four support parts. The steel balls of the steel ball roller pins are conically matched with the grooves on the support parts. The diameter of the grooves is larger than the diameter of the steel balls of the steel ball roller pins. The upper side of the fixed plate and the lower side of the floating plate are connected by several evenly distributed floating sliding pins. The steel ball roller pins and the floating sliding pins are evenly distributed and staggered. The upper side of the floating plate has pin holes arranged symmetrically with respect to the center.

[0009] The guide shaft fixing plate is also equipped with at least two pin cylinders that can extend pins to the floating plate. The pin cylinders are arranged symmetrically with respect to the center of the guide shaft fixing plate. The pins can be inserted into the pin holes and transition fit.

[0010] A pressure sensor is installed between the fixed plate and the floating plate to detect the pressure of the interaction between the fixed plate and the floating plate when the floating sliding pin is compressed.

[0011] The upper side of the floating plate and the lower side of the guide shaft fixing plate are respectively centrally arranged with a spherical crown groove and a steel universal ball, and the spherical crown groove and the steel universal ball are conically matched.

[0012] A linear bearing is provided on the lower side of the floating plate, and a floating sliding pin is inserted into the linear bearing.

[0013] The support frame includes a top plate, a bottom plate, and guide rods. The four corners of the top plate and the bottom plate are connected by four guide rods to form a high-rigidity gantry frame. A rectangular window is formed in the middle of the top plate to provide X-axis movement space for the displacement component. Two guide rails are provided on the top plate along the X-axis direction, which are symmetrically arranged on the outer sides of the two opposite sides of the rectangular window.

[0014] The displacement assembly includes an X-axis linear module, a Z-axis linear module, a mounting movable plate, a guide shaft connecting plate, and a guide shaft. The mounting movable plate is slidably connected to the guide rail. The X-axis linear module is used to drive the mounting movable plate to slide. The four corners of the mounting movable plate are respectively penetrated and slidably connected by the guide shaft. The upper and lower ends of the guide shaft are respectively fixed to the guide shaft connecting plate and the guide shaft fixing plate. The Z-axis linear module is used to drive the guide shaft fixing plate to move up and down relative to the mounting movable plate. The fixed part of the Z-axis linear module is connected to the mounting movable plate, and the movable part of the Z-axis linear module is connected to the guide shaft connecting plate. A linear displacement sensor is used to detect the movement distance of the guide shaft connecting plate.

[0015] The four corners of the assembled movable plate are equipped with linear bearings that slide in conjunction with the guide shaft.

[0016] When the core body is gripped and moved horizontally toward the turbine casing, the pin cylinder inserts a pin from the pin hole. When the core body is gripped and moved vertically toward the turbine casing for alignment, the pin cylinder pulls the pin out of the pin hole.

[0017] This invention utilizes the conical surface guiding principle to automatically eliminate radial deviation during the pressing process, achieving precise alignment, avoiding damage to parts, and is structurally reliable and highly applicable: the mechanism has a compact structure, reliable principle, and is suitable for automated assembly lines. Attached Figure Description

[0018] Figure 1 A schematic diagram of an assembly line structure including the automatic centering mechanism of the present invention;

[0019] Figure 2 This is a schematic diagram of the turbocharger assembly of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the support frame of the present invention;

[0022] Figure 5 This is a schematic diagram of the displacement component of the present invention;

[0023] Figure 6 This is a schematic diagram of the centering component of the present invention. Detailed Implementation

[0024] In order to better understand the technical content of the present invention, the following embodiments are provided in detail. The purpose of these embodiments is only to better understand the content of the present invention and not to limit the scope of protection of the present invention.

[0025] like Figure 3-6 As shown, an automatic centering device for turbocharger assembly includes a support frame 10, a displacement component 20 on the upper surface of the support frame 10, and a centering component 30 connected to the lower end of the displacement component 20.

[0026] The support frame 10 includes a base plate 100, a top plate 103, and guide rods 102. The base plate 100 includes a first base plate 100a and a second base plate 100b, which are fixed to the equipment as bases. The first guide rod 102a and the second guide rod 102b are respectively fixed in the first guide rod supports 101a and the second guide rod supports 101b at both ends of the first base plate 100a. The third guide rod 102c and the fourth guide rod 102d are respectively fixed in the third guide rod supports 101c and the fourth guide rod supports 101d at both ends of the second base plate 100b. The four corners of the top plate 103 are horizontally fixed to the top ends of the first guide rod 102a, the second guide rod 102b, the third guide rod 103c, and the fourth guide rod 104d, ensuring the stability and load-bearing capacity of the automatic centering mechanism support frame 10. The top plate 103 is a hollow structure with a rectangular window in the middle, providing space for the displacement component 20 to move along the X-axis. The top plate 103 is provided with a first guide rail 200a and a second guide rail 200b arranged along the X-axis direction, symmetrically arranged on the outer sides of the two opposite sides of the rectangular window.

[0027] Furthermore, the displacement component 20 includes an X-axis translation mechanism and a Z-axis linear module 207. The X-axis translation mechanism includes an X-axis linear module 202, a mounting movable plate 201, and a power transmission block 203. The bottom surface of the mounting movable plate 201 is slidably connected to a first guide rail 200a and a second guide rail 200b arranged in parallel. The X-axis linear module 202 is fixed to the side of the second guide rail 200b opposite to the first guide rail 200a. The power transmission block 203 is slidably connected to the X-axis linear module 202 and fixedly connected to the mounting movable plate 201. The X-axis linear module 202 drives the mounting movable plate 201 to move with high precision, high speed, and stability along the X-axis. The four corners of the mounting movable plate 201 are penetrated by a first guide shaft 205a, a second guide shaft 205b, a third guide shaft 205c, and a fourth guide shaft 205d arranged vertically. The four corners of the guide shaft connecting plate 205 are fixed to the top ends of the first guide shaft 205a, the second guide shaft 205b, the third guide shaft 205c, and the fourth guide shaft 205d, respectively. The middle of the guide shaft connecting plate 205 is hollowed out to form a notch, providing vertical movement space for the Z-axis linear module 207 to move relative to the guide shaft connecting plate 205. The upper part of the assembled movable plate 201 is also connected to the lower end of the Z-axis linear module 207. The upper end of the Z-axis linear module 207 extends out from the notch of the guide shaft connecting plate 205. The slider of the Z-axis linear module 207 is connected to the guide shaft connecting plate 205. The slider is used for the guide shaft connecting plate 205 to move in the Z-axis direction. The linear displacement sensor 206 is used to detect the displacement of the guide shaft connecting plate 205 relative to the assembled movable plate 201 in the Z-axis direction. The centering component 30 is installed at the lower ends of the first guide shaft 205a, the second guide shaft 205b, the third guide shaft 205c, and the fourth guide shaft 205d. The centering assembly 30 is supported by four sets of guide shafts, enabling it to move in a high-precision, high-speed and stable manner in the Z-axis direction. Combined with the linear displacement sensor 206, the displacement data in the Z-axis direction is accurately detected, providing precise position feedback and making the assembly process safer and more controllable.

[0028] Furthermore, the first guide shaft 205a, the second guide shaft 205b, the third guide shaft 205c, and the fourth guide shaft 205d extend from the bottom of the assembled movable plate 201 and are fixedly connected to the guide shaft fixing plate 305. The four corner edges of the guide shaft fixing plate 305 are bent downwards by 90° and extended to a set length before being bent 90° toward the center of the guide shaft fixing plate 305 to form a support part 311. The centering component 30 is suspended between the support part 311 and the guide shaft fixing plate 305. The centering component 30 includes a fixed plate 301 and a floating plate 304 arranged from bottom to top. The core assembly gripper module 300 is connected below the fixed plate 301 and can be used to grip the turbocharger core. The four corners of the lower side of the floating plate 304 are evenly distributed with a first linear bearing 306a and a first floating sliding pin 307a, a second linear bearing 306b and a second floating sliding pin 307b, a third linear bearing 306c and a third floating sliding pin 307c, and a fourth linear bearing 306d and a fourth floating sliding pin 307d. The upper side of the fixed plate 301 is connected to the lower side of the floating plate 304 through four floating sliding pins. The pressure sensor mounting plate 302 is fixed on the upper side of the fixed plate 301. The pressure sensor 303 is installed between the pressure sensor mounting plate 302 and the floating plate 304 and is pressed by both. When the core body assembly gripper module 300 grips the core body for assembly, the pressure sensor 303 ensures that the core body of the turbocharger is pressed into the designated position and forms a correct and reliable interference fit by accurately measuring and monitoring the pressure applied during the pressing process.

[0029] A spherical crown groove 309x is centrally located on the upper side of the floating plate 304, and pin holes 308c are symmetrically located opposite the spherical crown groove 309x. A steel universal ball 309 is centrally located on the lower side of the guide shaft fixing plate 305. A first pin cylinder 308a and a second pin cylinder 308b are mounted on the guide shaft fixing plate 305 and are symmetrically located opposite the steel universal ball 309. The pins of the first pin cylinder 308a and the second pin cylinder 308b can be inserted into the floating plate 304. In the pin hole 308c on the upper side, the steel universal ball 309 can be embedded in the spherical crown groove 309x on the upper side of the floating plate 304. When the core assembly gripper module 300 needs to grasp and move the core body, the first pin cylinder 308a and the second pin cylinder 308b simultaneously extend the diamond-shaped pins and insert them into the pin hole 308c to fix the floating plate 304. At this time, the core assembly gripper module 300 is limited and will not float, meeting the positional accuracy requirements during grasping and moving. The diameter of the spherical crown groove 309x is larger than that of the steel universal ball 309.

[0030] Furthermore, the lower side of the floating plate 304 is provided with a first steel ball roller pin 310a, a second steel ball roller pin 310b, a third steel ball roller pin 310c and a fourth steel ball roller pin 310d at the four corners, and the horizontal surface of the inner side of the four support parts 311 below the guide shaft fixing plate 305 is provided with grooves that can receive the steel ball roller pins. The groove diameter is larger than the size of the ball ball spherical surface of the ball ball roller pin. When the core body assembly gripper module 300 grips the core body for assembly and alignment, the first pin cylinder 308a and the second pin cylinder 308b are first operated to pull out the pin from the pin hole of the floating plate 304. The core body assembly gripper module 300 grips the core body and lowers it toward the turbine housing. When the core body contacts the turbine housing, the ball ball spherical surface of the ball ball roller pin is aligned with the groove of the support part 311 and floats and supports each other. Through the conical guide principle, the radial deviation is automatically compensated. The core body pushes the floating plate 304 to move slightly horizontally relative to the support part 311, and finally the core body and the turbine housing are flexibly assembled with high alignment accuracy.

[0031] The above description only illustrates the preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All modifications made within the scope of the independent claims of this invention are also within the scope of protection of this invention.

Claims

1. An automatic alignment device for turbocharger assembly, characterized in that, include: The support frame (10) is constructed as a high-rigidity gantry frame, including a top plate (103); The displacement assembly (20) is mounted on the support frame (10) and includes a guide shaft fixing plate (305) that can move relative to the top plate (103) along the X-axis and Z-axis directions. The guide shaft fixing plate (305) has a support portion (311) at the lower corner of each of its four corners. The support portion (311) is connected to the four corner edges of the guide shaft fixing plate (305). The support portion (311) has a groove on the side facing the guide shaft fixing plate (305). The centering component (30) includes a fixed plate (301) and a floating plate (304) arranged from bottom to top. The fixed plate (301) is connected to the core assembly clamping jaw module (300) below. The floating plate (304) has steel ball roller pins (310) at the four corners of its lower side. The floating plate (304) is assembled between four support parts (311). The steel balls of the steel ball roller pins (310) are conically matched with the grooves on the support parts (311). The diameter of the grooves is larger than the diameter of the steel balls of the steel ball roller pins (310). The upper side of the fixed plate (301) and the lower side of the floating plate (304) are connected by a number of evenly distributed floating sliding pins (307). The steel ball roller pins (310) and the floating sliding pins (307) are evenly distributed and staggered. The upper side of the floating plate (304) has pin holes arranged symmetrically with respect to the center. The guide shaft fixing plate (305) is also equipped with at least two pin cylinders (308) that can extend pins to the floating plate (304). The pin cylinders (308) are arranged symmetrically with respect to the center of the guide shaft fixing plate (305). The pins can be inserted into the pin holes and transition fit. The upper side of the floating plate (304) and the lower side of the guide shaft fixing plate (305) are respectively centrally arranged with a spherical crown groove (309x) and a steel universal ball (309), and the spherical crown groove (309x) and the steel universal ball (309) are conically matched. The support frame (10) includes a top plate (103), a bottom plate (100), and guide rods (102). The four corners of the top plate (103) and the bottom plate (100) are connected by four guide rods (102) to form a high-rigidity gantry frame. A rectangular window is formed in the middle of the top plate (103) to provide X-axis movement space for the displacement component (20). Two guide rails (200) are provided on the top plate (103) along the X-axis direction and are symmetrically arranged on the outer sides of the two opposite sides of the rectangular window.

2. The turbocharger assembly automatic alignment device according to claim 1, characterized in that, A pressure sensor (303) is installed between the fixed plate (301) and the floating plate (304) to detect the pressure of the interaction between the fixed plate (301) and the floating plate (304) when the floating sliding pin (307) is compressed.

3. The turbocharger assembly automatic alignment device according to claim 1, characterized in that, The floating plate (304) is provided with a linear bearing (306) on its lower side, and a floating sliding pin (307) is inserted into the linear bearing (306).

4. The turbocharger assembly automatic alignment device according to claim 1, characterized in that, The displacement assembly (20) includes an X-axis linear module (202), a Z-axis linear module (207), a mounting movable plate (201), a guide shaft connecting plate (205), and a guide shaft. The mounting movable plate (201) is slidably connected to the guide rail (200). The X-axis linear module (202) is used to drive the mounting movable plate (201) to slide. The four corners of the mounting movable plate (201) are respectively penetrated and slidably connected by the guide shaft. The upper and lower ends of the guide shaft are respectively fixed to the guide shaft connecting plate (205) and the guide shaft fixing plate. The fixed plate (305) and the Z-axis linear module (207) are used to drive the guide shaft fixed plate (305) to move up and down relative to the assembled movable plate (201). The fixed part of the Z-axis linear module (207) is connected to the assembled movable plate (201), and the movable part of the Z-axis linear module (207) is connected to the guide shaft connecting plate (205). The linear displacement sensor (206) is used to detect the moving distance of the guide shaft connecting plate (205). The assembled movable plate (201) is provided with linear bearings at its four corners that slide with the guide shaft.

5. The turbocharger assembly automatic alignment device according to claim 1, characterized in that, When the core body is gripped by the clamping jaw module (300) and moves horizontally toward the turbine casing, the pin cylinder (308) inserts a pin through the pin hole. When the core body is gripped and aligned vertically toward the turbine casing, the pin cylinder (308) pulls the pin out of the pin hole.

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