A positioning device for turbine casing flange processing

Abstract

The present invention relates to a positioning device for turbine casing flange processing, comprising a base, a support seat being fixedly arranged on the base, a first positioning mechanism, a second positioning mechanism and two third positioning mechanisms being arranged on the support seat, the first positioning mechanism being arranged on the front side of the support seat, the second positioning mechanism being arranged on the top of the support seat, and the two third positioning mechanisms being distributed on both sides of the second positioning mechanism; the second positioning mechanism comprising an articulated seat, the articulated seat being detachably fixedly connected to the support seat, a rotating seat being arranged on the articulated seat, and the rotating seat being rotatably connected to the articulated seat via an articulated shaft, the invention realizes G-point positioning and overall fixation of the turbine casing, and the rotation of the rotating seat can prevent obstruction during flange end processing, thereby realizing single clamping during flange end processing of the turbine casing, reducing costs, and improving processing efficiency and processing accuracy.

Description

Technical Field

[0001] The invention relates to a positioning device for turbine shell flange processing, belonging to the technical field of turbine shell processing. Background Art

[0002] Turbocharging is a technology that uses exhaust gases from an internal combustion engine to drive an air compressor. Commonly used in automotive engines, turbochargers can boost an engine's horsepower output. The design of a turbocharger's turbine housing is crucial. It houses the turbine, withstands the impact of the airflow, and ensures optimal airflow and distribution, improving the housing's efficiency. This means there's room for continuous optimization while maintaining the overall shape. During machining, the turbine housing requires a specialized fixture to secure it and facilitate processing.

[0003] Utility model patent application number CN202221226591.0 discloses a turbine casing positioning device for machining intake flange surfaces. The device comprises a base, an axial positioning seat, an angular positioning seat, and a clamping seat fixed to the base. The axial positioning seat is located between the angular positioning seat and the clamping seat. The axial positioning seat includes an axial reference block for obliquely positioning the turbine casing's outlet and a first clamping mechanism for clamping the turbine casing's turbine hole end face. The angular positioning seat includes an angular reference block for supporting the back of the turbine casing's intake flange surface and a first clamping mechanism for pressing the intake flange surface against the angular reference block. A second clamping mechanism is provided on the clamping seat. The device's fixture first axially positions the outlet, then angularly limits the position of the intake flange surface, and then clamps the turbine casing so that the intake flange surface faces upward, facilitating fine machining of the intake flange surface.

[0004] However, when processing the flange surface of the turbine shell, it is necessary to first use a fixed-point device to perform G-point positioning on the inner wall of the flange of the turbine shell and then process a process surface, and then use the process surface to position and process the flange surface. Because the fixed-point device will block the processing surface of the flange, after the G-point positioning and processing of the process surface, the turbine shell needs to be removed from the fixed-point device and then installed on the positioning device for flange surface processing. In this way, the turbine shell is clamped multiple times, which not only increases costs and reduces efficiency, but also easily increases processing errors and affects processing accuracy.

[0005] Therefore, there is a need for a positioning device for turbine housing flange processing to achieve single clamping during flange surface processing, reduce costs, and improve processing efficiency and processing accuracy. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the existing technology, a positioning device for turbine casing flange processing is provided to achieve single clamping during flange surface processing, reduce costs, and improve processing efficiency and processing accuracy.

[0007] The technical solution adopted by the present invention to solve the above-mentioned problem is: a positioning device for turbine casing flange processing, comprising a base, a support base fixedly provided on the base, a first positioning mechanism, a second positioning mechanism and two third positioning mechanisms provided on the support base, the first positioning mechanism being provided on the front side of the support base, the second positioning mechanism being provided on the top of the support base, and the two third positioning mechanisms being distributed on both sides of the second positioning mechanism, the two third positioning mechanisms being used to achieve left-right positioning of the turbine casing;

[0008] The first positioning mechanism includes a fixing seat, the fixing seat is fixedly arranged on the support seat, the front side of the fixing seat is threadedly connected to a lead screw, the lead screw is parallel to the front-to-back direction, a pressure plate is movably sleeved on the lead screw, the pressure plate is located on the front side of the fixing seat, and a first nut is screwed on the lead screw, and the first nut abuts against the front side of the pressure plate;

[0009] The second positioning mechanism includes an articulated seat, which is detachably fixedly connected to the support seat. A rotating seat is provided on the articulated seat, and the rotating seat is rotatably connected to the articulated seat via an articulated shaft. The articulated shaft is parallel to the left and right directions, and a locator is fixedly inserted on the left or right side of the rotating seat;

[0010] The rotating seat includes a first seat body, a second seat body and a locking unit. The first seat body and the second seat body are arranged front to back. The second seat body is hinged to the hinge seat through a hinge shaft. The positioner is set on the first seat body. A rotating shaft is set on the rear side of the first seat body. The rotating shaft is parallel to the front and back direction. The rotating shaft moves through the second seat body. The first seat body and the second seat body are fixed by the locking unit.

[0011] Preferably, the coaxial fixing sleeve on the rotating shaft is provided with two limiting rings, and the two limiting rings are respectively fitted with the front side and the rear side of the second seat body.

[0012] Preferably, the locking unit includes a locking block, a locking rod, a fixed block and a spring, the fixed block is fixedly set on the second base body, the locking block is fixedly set on the first base body, the locking rod is parallel to the front and rear directions, the locking rod passes through the fixed block and the locking block in sequence, the spring is located on the rear side of the fixed block, and the fixed block is connected to the rear end of the locking rod through the spring.

[0013] Preferably, a support column is fixedly provided on the top of the support seat, the support column is located on the front side of the hinge seat, and the bottom of the rotating seat is against the top of the support seat.

[0014] Preferably, the locator includes a pin, which is parallel to the left and right directions, one end of the pin is inserted into the first seat body, and the other end of the pin is fixed with a positioning block, and a washer is sleeved on the pin, and the washer is located between the positioning block and the first seat body, and the washer is respectively against the positioning block and the first seat body.

[0015] Preferably, the third mechanism includes a fixing plate, the fixing plate is fixedly arranged on the support seat, and the fixing plate is threadedly connected to a push rod.

[0016] Preferably, a strip groove is provided on the fixing plate, the strip groove is parallel to the front and rear directions, a plurality of fifth screws are provided in the strip groove, the plurality of fifth screws are arranged front and back, the plurality of screws pass through the strip groove, and the fixing plate is locked with the support seat by the fifth screws.

[0017] Preferably, the fixed seat includes a guide column and a positioning core, and the guide column and positioning core are arranged front to back. The positioning core is detachably fixed on the support seat by a plurality of first screws. The guide column is parallel to the front and back directions. The lead screw passes through the guide column. The lead screw is threadedly connected to the positioning core. A second nut is threadedly connected to the lead screw, and the guide column is fixed to the positioning core by the second nut.

[0018] A positioning method for machining a turbine housing flange comprises the following steps:

[0019] S1. Rotate the rotating seat to rotate the first seat body to the rear side of the second seat body;

[0020] S2. Remove the first nut and the pressure plate, and sleeve the turbine housing onto the positioning column, with the rear side of the turbine housing abutting against the front side of the positioning core to achieve the center position of the turbine housing;

[0021] S3. Rotate the rotating seat in the opposite direction to reset it and place the positioning block in the pipe opening at the flange end of the turbine housing;

[0022] S4. Rotate the turbine housing around the guide post and make the inner wall of one side of the flange end abut against the positioning block. The abutting position is point G.

[0023] S5. After the pressure plate is placed on the lead screw, the first screw is tightened so that the first nut pushes the pressure plate against the front side of the turbine housing to achieve the front-to-back positioning of the turbine housing.

[0024] S6. Rotate the two push rods to contact the left and right sides of the flange end respectively;

[0025] S7, remove the positioner

[0026] S7.1. Pull the locking rod to separate it from the locking block;

[0027] S7.2. Rotate the first seat so that the first seat drives the rotating shaft to rotate and separate the positioning block from the inner wall of one side of the flange end;

[0028] S7.3. Push the rotating seat to rotate around the hinge axis so that the first seat body is located behind the second seat body;

[0029] S7.4. Insert the locking rod into the locking seat again.

[0030] Preferably, step S6 specifically includes the following steps:

[0031] S6.1. Rotate the push rod on the side of the positioning block away from the first base until the push rod abuts against the outer wall of the flange end.

[0032] S6.2. Rotate the other push rod so that it contacts the outer wall on the other side of the flange end.

[0033] Compared with the prior art, the advantages of the present invention are:

[0034] 1. The G-point positioning and overall fixation of the turbine housing are achieved, and the rotation of the rotary seat can prevent obstruction during flange end processing, achieving single clamping during flange end processing of the turbine housing, reducing costs and improving processing efficiency and accuracy;

[0035] 2. After positioning at point G, first separate the positioning block from the inner wall of the flange end and then rotate the rotating seat. This will cause wear between the positioning block and the inner wall of the flange end, thereby avoiding the wear of the positioning block affecting the positioning accuracy of the machining surface of the flange end, further improving the accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural schematic diagram of a positioning device for turbine casing flange processing in the second state according to the present invention;

[0037] Figure 2 This is a structural schematic diagram of a positioning device for turbine casing flange processing in a first state according to the present invention;

[0038] Figure 3 for Figure 1 Front view of

[0039] Figure 4 for Figure 1 A top view of

[0040] Figure 5 for Figure 1 Left view of;

[0041] Figure 6 is a structural schematic diagram of the second positioning mechanism;

[0042] Figure 7 It is a structural diagram of the rotating seat;

[0043] Figure 8 It is a structural diagram of the locator;

[0044] Figure 9 is a structural diagram of the third positioning mechanism;

[0045] Figure 10 is a structural diagram of the first positioning mechanism;

[0046] Figure 11 Schematic diagram of the turbine casing.

[0047] in:

[0048] Base 1, support base 2, first positioning mechanism 3, second positioning mechanism 4, third positioning mechanism 5, turbine housing 6;

[0049] Fixed seat 31, lead screw 32, pressure plate 33, first nut 34;

[0050] Guide column 31.1, positioning core 31.2, first screw 31.3, second nut 31.4;

[0051] Articulated base 41, second screw 42, rotating base 43, articulated shaft 44, third screw 45, first handle 46, positioner 47, fourth screw 48, support column 49;

[0052] First base body 43.1, second base body 43.2, locking unit 43.3, rotating shaft 43.4, limiting ring 43.5;

[0053] Locking block 43.31, locking rod 43.32, fixing block 43.33, spring 43.34;

[0054] Pin 47.1, positioning block 47.2, washer 47.3;

[0055] Fixed plate 51, strip groove 52, fifth screw 53, push rod 54, second handle 55;

[0056] Center hole 61, flange end 62, G point 63. DETAILED DESCRIPTION

[0057] like Figure 1-11As shown, a positioning device for turbine housing flange processing in this embodiment includes a base 1, a support base 2 is fixedly provided on the base 1, and a first positioning mechanism 3, a second positioning mechanism 4 and two third positioning mechanisms 5 are provided on the support base 2. The first positioning mechanism 3 is arranged on the front side of the support base 2, the second positioning mechanism 4 is arranged on the top of the support base 2, and the two third positioning mechanisms 5 are distributed on both sides of the second positioning mechanism 4. The first positioning mechanism 3 is used to achieve positioning of the turbine housing 6 in the front and rear directions and the center position, the second positioning mechanism 4 is used to achieve positioning of the G point 63 on the inner side wall of the flange end 62 of the turbine housing 6, and the two third positioning mechanisms 5 are used to achieve positioning of the turbine housing 6 in the left and right directions;

[0058] The first positioning mechanism 3 includes a fixing base 31, which is fixedly arranged on the support base 2. A screw 32 is threadedly connected to the front side of the fixing base 31. The screw 32 is parallel to the front-to-back direction. A pressure plate 33 is movably sleeved on the screw 32. The pressure plate 33 is located at the front side of the fixing base 31. A first nut 34 is screwed to the screw 32. The first nut 34 abuts against the front side of the pressure plate 33.

[0059] The fixing seat 31 includes a guide column 31.1 and a positioning core 31.2. The guide column 31.1 and the positioning core 31.2 are arranged front to back. The positioning core 31.2 is detachably fixed on the support seat 2 by a plurality of first screws 31.3. The guide column 31.1 is parallel to the front and back directions. The lead screw 32 passes through the guide column 31.1. The lead screw 32 is threadedly connected to the positioning core 31.2. A second nut 31.4 is threadedly connected to the lead screw 32. The guide column 31.1 is fixed to the second nut 31.3 by the second nut 31.4. 1.4 Fix it with the positioning core 31.2. When placing the turbine housing 6, remove the first nut 34 and the pressure plate 33, and fit the turbine housing 6 onto the positioning column, with the rear side of the turbine housing 6 abutting against the front side of the positioning core 31.2, and the diameter of the center hole 61 of the turbine housing 6 being equal to the diameter of the positioning column. Then, fit the pressure plate 33 onto the lead screw 32, and finally screw on the first nut 34, so that the first nut 34 pushes the pressure plate 33 against the front side of the turbine housing 6. In this way, the center position and the front-to-back direction positioning of the turbine housing 6 are achieved.

[0060] The second positioning mechanism 4 includes a hinged seat 41, which is detachably fixed to the support seat 2 by two second screws 42. A rotating seat 43 is provided on the hinged seat 41, and the rotating seat 43 is rotatably connected to the hinged seat 41 by a hinge shaft 44. The hinge shaft 44 is parallel to the left and right directions, and the hinge shaft 44 is locked with the hinged seat 41 by a third screw 45. A first handle 46 is provided on the rotating seat 43, and a locator 47 is inserted on the left or right side of the rotating seat 43. The locator 47 is locked with the rotating seat 43 by a fourth screw 48. A support column 49 is fixed on the top of the support seat 2. The support column 49 is located on the front side of the hinged seat 41, and the bottom of the rotating seat 43 abuts against the top of the support seat 2;

[0061] The rotating seat 43 includes a first seat body 43.1, a second seat body 43.2 and a locking unit 43.3. The first seat body 43.1 and the second seat body 43.2 are arranged front to back, and the second seat body 43.2 is hinged to the hinge seat 41 through a hinge shaft 44. The positioner 47 is provided on the first seat body 43.1. A rotating shaft 43.4 is provided on the rear side of the first seat body 43.1. The rotating shaft 43.4 is parallel to the front and rear directions. The rotating shaft 43.4 movably passes through the second seat body 43.2. Two limiting rings 43.5 are coaxially fixedly sleeved on the rotating shaft 43.4. The two limiting rings 43.5 are respectively fitted with the front and rear sides of the second seat body 43.2. The first seat body 43.1 and the second seat body 43.2 are fixed by the locking unit 43.3.

[0062] The locking unit 43.3 includes a locking block 43.31, a locking rod 43.32, a fixed block 43.33 and a spring 43.34. The fixed block 43.33 is fixedly arranged on the second base body 43.2, and the locking block 43.31 is fixedly arranged on the first base body 43.1. The locking rod 43.32 is parallel to the front-back direction. The locking rod 43.32 passes through the fixed block 43.33 and the locking block 43.31 in sequence. The spring 43.34 is located at the rear side of the fixed block 43.33. The fixed block 43.33 is connected to the rear end of the locking rod 43.32 via the spring 43.34.

[0063] The positioner 47 includes a pin 47.1, which is parallel to the left and right directions. One end of the pin 47.1 is inserted into the first seat 43.1. The other end of the pin 47.1 is fixedly provided with a positioning block 47.2. A washer 47.3 is sleeved on the pin 47.1 and is located between the positioning block 47.2 and the first seat 43.1. The washer 47.3 abuts against the positioning block 47.2 and the first seat 43.1 respectively.

[0064] Before the turbine shell 6 is positioned at the center position, the rotating seat 43 is pushed to rotate the rotating seat 43 around the hinge shaft 44 and rotate the first seat body 43.1 to the rear side of the second seat body 43.2. At this time, the positioning device is in the first state. After the center position of the turbine shell 6 is positioned, the rotating seat 43 is pushed in the opposite direction to reset the rotating seat 43 and make the locator 47 located in the pipe mouth of the flange end 62 of the turbine shell 6. Then, the turbine shell 6 is rotated around the guide column 31.1 and the inner wall of one side of the flange end 62 abuts against the positioning block 47.2. The abutting position is the G point 63. At this time, the positioning device is in the second state. Afterwards, the first nut 34 is tightened and the left and right positioning of the turbine shell 6 is achieved through the two third positioning mechanisms 5. Then, after the process surface is processed, the locking rod 43.32 is pulled to separate the locking rod 43.32 from the locking block 43.31 , rotate the first seat body 43.1 so that the first seat body 43.1 drives the rotating shaft 43.4 to rotate on its own, so that the positioning block 47.2 rotates synchronously and separates from the inner wall of one side of the flange end 62, and then pushes the rotating seat 43 again to rotate the rotating seat 43 to the first state position, and then rotates the first seat body 43.1 in the opposite direction so that the first seat body 43.1 and the second seat body 43.2 are relatively reset, so that the locking rod 43.32 is inserted into the locking block 43.31, so that the first seat body 43.1 and the second seat body 43.2 are fixed, and the spring 43.34 plays the role of supporting the locking rod 43.32 to prevent the locking rod 43.32 from slipping. The next step is to process the plane of the flange end 62 of the turbine shell 6. After the processing is completed, remove the pressure plate 33, and after the two third mechanisms stop positioning the turbine shell 6, remove the turbine shell 6;

[0065] When positioning the G point 63 on turbine housings 6 of different models, the number of spacers can be adjusted;

[0066] Here, separating the positioning block 47.2 from the inner wall of one side of the flange end 62 and then rotating the rotating seat 43 about the hinge shaft 44 can prevent wear between the positioning block 47.2 and the inner wall of one side of the flange end 62, thereby preventing the worn positioning block 47.2 from affecting the positioning accuracy of the machined surface of the flange end 62, thereby improving the machining accuracy of the machined surface of the flange end 62;

[0067] In addition, the single clamping is achieved when machining the flange end 62 machining surface, which reduces costs and improves machining efficiency;

[0068] The third mechanism includes a fixing plate 51, the fixing plate 51 is fixedly provided on the support seat 2, the fixing plate 51 is provided with a strip groove 52, the strip groove 52 is parallel to the front and rear directions, two fifth screws 53 are provided in the strip groove 52, the two fifth screws 53 are arranged front and back, the fifth screws 53 pass through the strip groove 52, the fixing plate 51 is locked with the support seat 2 by the fifth screw 53, the fixing plate 51 is threadedly connected to the push rod 54, the end of the push rod 54 away from the second positioning mechanism 4 is fixedly provided with a second handle 55, and the fifth screw 53 is screwed to make the fixing plate 51 1 moves forward and backward, the position of the push rod 54 in the forward and backward direction can be adjusted. After the turbine housing 6G point 63 is positioned, the flange end 62 is located between the two push rods 54. The second handle 55 is rotated to move the push rod 54 on the fixing plate 51 toward the flange end 62, and the push rod 54 is abutted against the outer wall of the flange end 62. In this way, the turbine housing 6 is positioned in the forward and backward direction. The order of rotating the two pull rods is as follows: first, rotate the positioning block 47.2 away from the push rod 54 on the side of the first seat body 43.1. After this push rod 54 abuts against the outer wall of the flange end 62, rotate the other push rod 54 to abut against the outer wall of the flange end 62.

[0069] A positioning method for machining a turbine housing flange comprises the following steps:

[0070] S1. Rotate the rotating seat 43 to rotate the first seat body 43.1 to the rear side of the second seat body 43.2;

[0071] S2. Remove the first nut 34 and the pressure plate 33, and sleeve the turbine housing 6 onto the positioning column, with the rear side of the turbine housing 6 abutting against the front side of the positioning core 31.2 to achieve the center position of the turbine housing 6;

[0072] S3. Rotate the rotating seat 43 in the reverse direction to reset it and position the positioning block 47.2 in the pipe opening of the flange end 62 of the turbine housing 6;

[0073] S4. Rotate the turbine housing 6 around the guide post 31.1, and make the inner wall of one side of the flange end 62 abut against the positioning block 47.2. The abutting position is point G 63.

[0074] S5. After the pressure plate 33 is placed on the lead screw 32, the first screw 31.3 is tightened so that the first nut 34 pushes the pressure plate 33 against the front side of the turbine housing 6 to achieve the front-to-back positioning of the turbine housing 6.

[0075] S6. Rotate the two push rods 54 to abut against the left and right sides of the flange end 62 respectively;

[0076] S6.1. Rotate the push rod 54 located on the side of the positioning block 47.2 away from the first base 43.1 so that the push rod 54 abuts against the outer wall of the flange end 62.

[0077] S6.2. Rotate the other push rod 54 so that it abuts against the outer wall on the other side of the flange end 62;

[0078] S7, remove the positioner 47

[0079] S7.1. Pull the locking rod 43.32 to separate the locking block 43.31;

[0080] S7.2. Rotate the first base 43.1 so that the first base 43.1 drives the rotating shaft 43.4 to rotate, and separate the positioning block 47.2 from the inner wall of one side of the flange end 62;

[0081] S7.3. Push the rotating seat 43 to rotate around the hinge shaft 44 so that the first seat body 43.1 is located behind the second seat body 43.2 to prevent the machining surface of the flange end 62 of the turbine housing 6 from being blocked during machining;

[0082] S7.4. Insert the locking rod 43.32 into the locking seat again;

[0083] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. A positioning device for turbine housing flange processing, characterized by: The invention comprises a base (1), a support base (2) is fixedly provided on the base (1), a first positioning mechanism (3), a second positioning mechanism (4) and two third positioning mechanisms (5) are provided on the support base (2), the first positioning mechanism (3) is provided on the front side of the support base (2), the second positioning mechanism (4) is provided on the top of the support base (2), and the two third positioning mechanisms (5) are distributed on both sides of the second positioning mechanism (4) on the left and right sides, and the two third positioning mechanisms (5) are used to realize the positioning of the turbine housing (6) in the left and right directions; The first positioning mechanism (3) includes a fixing seat (31), the fixing seat (31) is fixedly arranged on the support seat (2), the front side of the fixing seat (31) is threadedly connected to a lead screw (32), the lead screw (32) is parallel to the front-back direction, a pressure plate (33) is movably sleeved on the lead screw (32), the pressure plate (33) is located on the front side of the fixing seat (31), and a first nut (34) is screwed on the lead screw (32), and the first nut (34) abuts against the front side of the pressure plate (33); The second positioning mechanism (4) includes an articulated seat (41), the articulated seat (41) is detachably fixedly connected to the support seat (2), a rotating seat (43) is provided on the articulated seat (41), the rotating seat (43) is rotatably connected to the articulated seat (41) via an articulated shaft (44), the articulated shaft (44) is parallel to the left and right directions, and a positioner (47) is fixedly inserted on the left or right side of the rotating seat (43); The rotating seat (43) comprises a first seat body (43.1), a second seat body (43.2) and a locking unit (43.3); the first seat body (43.1) and the second seat body (43.2) are arranged front to back; the second seat body (43.2) is hinged to the hinge seat (41) via a hinge shaft (44); the positioner (47) is arranged on the first seat body (43.1); a rotating shaft (43.4) is provided on the rear side of the first seat body (43.1); the rotating shaft (43.4) is parallel to the front-back direction; the rotating shaft (43.4) movably passes through the second seat body (43.2); the first seat body (43.1) and the second seat body (43.2) are fixed via the locking unit (43.3); The locking unit (43.3) comprises a locking block (43.31), a locking rod (43.32), a fixing block (43.33) and a spring (43.34); the fixing block (43.33) is fixedly arranged on the second seat body (43.2); the locking block (43.31) is fixedly arranged on the first seat body (43.1); the locking rod (43.32) is parallel to the front-back direction; the locking rod (43.32) passes through the fixing block (43.33) and the locking block (43.31) in sequence; the spring (43.34) is located at the rear side of the fixing block (43.33); and the fixing block (43.33) is connected to the rear end of the locking rod (43.32) via the spring (43.34); The positioner (47) includes a pin (47.1), the pin (47.1) is parallel to the left and right directions, one end of the pin (47.1) is inserted into the first seat (43.1), the other end of the pin (47.1) is fixedly provided with a positioning block (47.2), a washer (47.3) is sleeved on the pin (47.1), the washer (47.3) is located between the positioning block (47.2) and the first seat (43.1), and the washer (47.3) abuts against the positioning block (47.2) and the first seat (43.1), respectively.

2. A positioning device for turbine housing flange processing according to claim 1, characterized in that: The coaxial fixing sleeve on the rotating shaft (43.4) is provided with two limiting rings (43.5), and the two limiting rings (43.5) are respectively fitted with the front side and the rear side of the second seat body (43.2).

3. A positioning device for turbine housing flange processing according to claim 2, characterized in that: A support column (49) is fixedly provided on the top of the support seat (2), and the support column (49) is located on the front side of the hinge seat (41). The bottom of the rotating seat (43) abuts against the top of the support seat (2).

4. A positioning device for turbine casing flange processing according to claim 3, characterized in that: The third positioning mechanism comprises a fixing plate (51), wherein the fixing plate (51) is fixedly arranged on the support seat (2), and the fixing plate (51) is threadedly connected to a push rod (54).

5. The positioning device for turbine housing flange processing according to claim 4, characterized in that: The fixing plate (51) is provided with a strip groove (52), the strip groove (52) is parallel to the front-back direction, a plurality of fifth screws (53) are provided in the strip groove (52), the plurality of fifth screws (53) are arranged front-to-back, the plurality of fifth screws pass through the strip groove (52), and the fixing plate (51) is locked with the support seat (2) by the fifth screws (53).

6. The positioning device for turbine housing flange processing according to claim 5, characterized in that: The fixing seat (31) comprises a guide column (31.1) and a positioning core (31.2), the guide column (31.1) and the positioning core (31.2) being arranged front to back, the positioning core (31.2) being detachably fixed on the support seat (2) by a plurality of first screws (31.3), the guide column (31.1) being parallel to the front-to-back direction, the lead screw (32) passing through the guide column (31.1), the lead screw (32) being threadedly connected to the positioning core (31.2), a second nut (31.4) being threadedly connected to the lead screw (32), and the guide column (31.1) being fixed to the positioning core (31.2) by the second nut (31.4).

7. A positioning device for turbine housing flange processing according to claim 6, characterized in that The positioning method of the positioning device comprises the following steps: S1, rotating the rotating seat (43) to rotate the first seat body (43.1) to the rear side of the second seat body (43.2); S2, remove the first nut (34) and the pressure plate (33), sleeve the turbine housing (6) on the positioning column, and abut the rear side of the turbine housing (6) against the front side of the positioning core (31.2) to achieve the center position of the turbine housing (6); S3, rotating the rotating seat (43) in the reverse direction to achieve reset, and making the positioning block (47.2) located in the pipe opening of the flange end (62) of the turbine housing (6); S4. Rotate the turbine housing (6) around the guide column (31.1) so that the inner wall of one side of the flange end (62) abuts against the positioning block (47.2). The abutting position is point G (63). S5. After the pressure plate (33) is placed on the lead screw (32), the first screw (31.3) is tightened, so that the first nut (34) pushes the pressure plate (33) against the front side of the turbine housing (6), thereby achieving the positioning of the turbine housing (6) in the front-to-back direction; S6. Rotate the two push rods (54) to respectively abut against the left and right sides of the flange end (62); S7. Remove the positioner (47) S7.

1. Pull the locking rod (43.32) to separate it from the locking block (43.31); S7.2, rotating the first seat body (43.1) so that the first seat body (43.1) drives the rotating shaft (43.4) to rotate, and separating the positioning block (47.2) from the inner wall of one side of the flange end (62); S7.

3. Push the rotating seat (43) to rotate around the hinge shaft (44) so that the first seat body (43.1) is located behind the second seat body (43.2); S7.

4. Insert the locking rod (43.32) into the locking seat again.

8. The positioning device for turbine housing flange processing according to claim 7, characterized in that: The step S6 specifically includes the following steps: S6.

1. Rotate the push rod (54) located on the side of the positioning block (47.2) away from the first seat (43.1) so that the push rod (54) abuts against the outer wall of the flange end (62); S6.

2. Rotate the other push rod (54) so that the push rod (54) abuts against the outer wall on the other side of the flange end (62).

Images