Servo drive turbine shell rocker arm welding tool

Abstract

The invention relates to a servo drive turbine shell rocker arm welding tool, and belongs to the technical field of welding tools, the servo drive turbine shell rocker arm welding tool comprises a positioning assembly, a clamping assembly, a mistake proofing assembly and a control assembly, the positioning assembly comprises a base and a plurality of positioning seats, and the positioning seats are fixedly installed on the base; the clamping assembly comprises a plurality of clamping blocks and a power unit, the multiple clamping blocks are installed on the base or the positioning base, and one end of each clamping block is connected with the power end of the power unit; the mistake proofing assembly comprises sensing pieces and a data module, the sensing pieces are installed on the positioning base and the power unit respectively, and the sensing pieces are electrically connected with the data module so as to be used for detecting positioning of the turbine shell, the rocker arm and the bypass valve and detecting driving parameters of the power unit; the control assembly comprises a controller and a data storage module, and the power unit, the mistake proofing assembly and the data storage module are electrically connected with the controller. The welding tool is high in automation degree, welding efficiency and welding precision.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, and in particular to a servo-driven turbine housing rocker arm welding tooling. Background Art

[0002] The core working principle of the turbocharger is to adjust the intake pressure of the engine by controlling the opening and closing of the bypass valve in the turbine shell assembly through the electronic actuator based on its special structure, so as to achieve the purpose of adjusting the power. The bypass valve and rocker arm in the turbine shell assembly of the existing turbocharger are connected by welding the bypass valve and the rocker arm. The rocker arm is welded together with the rotating shaft of the bypass valve as a part of the actuator of the bypass valve of the supercharger, and is used to control the opening and closing of the exhaust valve. The welding performance of the bypass valve rotating shaft and the rocker arm directly determines the safe operating conditions and performance of the supercharger.

[0003] In the prior art, a series of key functional characteristics of the bypass valve turntable and rocker arm, such as welding angle, welding gap, welding preload, etc., are guaranteed by the stability of the welding tooling. At present, turbocharger manufacturers mostly use manual tooling or pneumatic tooling for the welding tooling of this process, which has the problems of cumbersome operation, long clamping cycle, and easy mis-clamping. As a result, in mass production, there are disadvantages such as large manual clamping amount, large workload of personnel, low clamping positioning accuracy of components, and inability to effectively monitor and trace key process parameters. The structural design and error-proofing function configuration of the existing welding tooling cannot achieve mass production and automated production of products. Therefore, a turbine shell rocker arm welding tooling is needed to solve the problems of the existing turbine shell rocker arm welding tooling, which has large manual clamping amount, large workload of personnel, low clamping positioning accuracy of components, and inability to effectively monitor and trace key process parameters. Summary of the invention

[0004] The object of the present invention is to provide a servo-driven turbine housing rocker arm welding tool to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a servo-driven turbine casing rocker arm welding tool, comprising a positioning assembly, a clamping assembly, an error-proofing assembly and a control assembly, the positioning assembly comprising a base and a plurality of positioning seats, the plurality of positioning seats are respectively fixedly mounted on the base, and are used for positioning and mounting a turbine casing, a rocker arm and a bypass valve; the clamping assembly comprises a plurality of clamping blocks and a power unit, the plurality of clamping blocks are respectively mounted on the base or the positioning seat, and one end of the clamping blocks is connected to the power end of the power unit, and is used for clamping and fixing the turbine casing, the rocker arm and the bypass valve on the positioning seat; the error-proofing assembly comprises a sensor and a data module, the sensor is respectively mounted on the positioning seat and the power unit, and the sensor is electrically connected to the data module, so as to detect the positioning of the turbine casing, the rocker arm and the bypass valve and detect the driving parameters of the power unit; the control assembly comprises a controller and a data storage module, the power unit, the error-proofing assembly and the data storage module are respectively electrically connected to the controller.

[0006] Preferably, a plurality of positioning seats are divided into a turbine housing positioning seat, a rocker arm positioning seat and a bypass valve positioning seat according to the positioning object; the turbine housing positioning seat is fixedly mounted on the base to form a main positioning seat; the rocker arm positioning seat and the bypass valve positioning seat are respectively mounted on the turbine housing positioning seat to form a pre-positioning seat with the main positioning seat as the component positioning position. The present invention uses the turbine housing positioning seat as the main positioning seat, and mounts the rocker arm positioning seat and the bypass valve positioning seat on the main positioning seat for positioning and installing the rocker arm and the bypass valve, so as to reduce the cumulative positioning error between the turbine housing, the rocker arm and the bypass valve, and improve the positioning accuracy of the components. The main positioning seat and the pre-positioning seat are set at the same time, so that the component discharge equipment can place the turbine housing with the main positioning seat, and then place the rocker arm and the bypass valve with the pre-positioning seat, so as to automatically load and unload materials, thereby improving the automation degree of the welding tooling.

[0007] Preferably, the turbine casing locating seat comprises a turbine casing center hole locating seat and a turbine casing flange locating seat; the turbine casing center hole locating seat comprises a column and a center hole column; the center hole column is fixedly mounted on the column, a step-shaped locating surface is provided on the center hole column, and the step-shaped locating surface is provided with a conical arc chamfer; a flange locating block is provided on the turbine casing flange locating seat; the turbine casing is sleeved on the center hole column through the blade shaft hole, the turbine casing inlet surface is abutted against the step-shaped locating surface, and the mounting flange is abutted against the flange locating block to be positioned and installed on the turbine casing locating seat; the rocker arm locating seat is mounted on the column; the bypass valve locating seat is mounted on the center hole column. The present invention provides a turbine shell center hole positioning seat and a turbine shell flange positioning seat as a turbine shell positioning seat, specifically, a column is provided, a center hole column is provided on the column, and a stepped positioning surface is provided on the center hole column, so that the blade shaft hole of the turbine shell is sleeved on the center hole column and abutted against the stepped positioning surface for positioning, and a flange positioning block is provided at the same time, so that the installation flange of the turbine shell is abutted and positioned, so that the turbine shell can limit 6 degrees of freedom under the action of the clamping block. The stepped positioning surface of the present invention is provided with a conical arc chamfer, so that when the turbine shell is positioned and installed, it is prevented from hitting the components during the clamping process.

[0008] Preferably, the rocker arm positioning seat includes a rocker arm mounting plate and a rocker arm angle limit block; the rocker arm mounting plate is fixedly or slidably mounted on the column, and one end of the rocker arm mounting plate extends toward the bypass valve shaft hole to form a rocker arm pre-positioning portion between the rocker arm and the bypass valve shaft hole; the rocker arm angle limit block is mounted on the column, and one end of the rocker arm angle limit block extends toward the rocker arm to form a limit portion, and a contact sensor is mounted on the limit portion; the rocker arm is mounted on the rocker arm pre-positioning portion, and the rocker arm is limited by abutting against the limit portion of the rocker arm angle limit block to limit the welding angle of the rocker arm; a distance sensor is mounted on the rocker arm mounting plate, and the sensing end of the distance sensor faces the contact sensor. The present invention forms a rocker arm pre-positioning portion between the bypass valve shaft hole by setting a rocker arm mounting plate. Since the rocker arm mounting plate is mounted on the column, the position between the rocker arm and the bypass valve shaft hole is relatively fixed to improve the positioning accuracy of the turbine housing and the rocker arm. In order to facilitate the automatic loading of the rocker arm, the present invention can set the rocker arm mounting plate to be slidably mounted on the column, so that the front and rear clamping of the components will not cause position conflicts, thereby achieving the purpose of automatic loading and unloading. In addition, the present invention sets a rocker arm angle limit block to control the welding angle of the rocker arm.

[0009] Preferably, the bypass valve positioning seat includes a support plate, and one end of the central hole column away from the stepped positioning surface extends to the exhaust port side of the turbine shell to form an extended end; one end of the support plate is hinged to the extended end through an elastic member, and its free end constitutes the positioning portion of the bypass valve. The present invention facilitates automatic loading of the bypass valve by setting a support plate hinged to the central hole column as a pre-positioning seat of the bypass valve. Since the bypass valve shaft is installed in the bypass valve shaft hole, when installing the bypass valve, it is necessary to install the bypass valve at the bypass valve port of the turbine shell from the side, and the bypass valve shaft is installed in the bypass valve shaft hole, so it is also necessary to rotate the shaft radially into the bypass valve shaft hole. The welding tool in the prior art does not have the function of automatically clamping the bypass valve, and needs to be installed manually. In addition, in order to prevent the bypass valve from falling due to its own weight during the welding process, a lifting device needs to be set to support the bypass valve, resulting in a large number of tooling parts when the existing welding tool is used to weld the bypass valve, and manual assistance is also required, and the degree of automation is low. The present invention provides an articulated support plate to realize that when the bypass valve is loaded through the loading equipment, the bypass valve is first placed on the free end of the support plate, at which time the elastic member is compressed to store energy, and the rotating shaft of the bypass valve is placed at the entrance of the rotating shaft hole of the bypass valve. Then the loading equipment is moved out, and the support plate rotates and resets around the hinge point under the elastic force of the elastic member to drive the bypass valve to move toward the exhaust valve port, and at the same time drive the rotating shaft of the bypass valve to insert into the rotating shaft hole of the bypass valve, thereby realizing the positioning and installation of the bypass valve.

[0010] Preferably, the stepped positioning surface and the flange positioning block are respectively provided with contact-type sensing parts to sense the positioning installation of the turbine shell; At least one clamping block is provided on the turbine shell center hole positioning seat and the turbine shell flange positioning seat respectively, so as to fix and clamp the turbine shell on the positioning surface; the clamping blocks on the turbine shell center hole positioning seat and the turbine shell flange positioning seat are first lever-type clamping devices; the first lever-type clamping device includes a first lever hydraulic cylinder and a first clamping head; the first clamping head is hinged to the positioning seat, one end of which is connected to the power end of the first lever hydraulic cylinder, and the other end is a free end constituting a clamping portion for the turbine shell. The present invention provides a contact-type sensing member on the stepped positioning surface and the flange positioning block to sense whether the turbine shell is effectively positioned, so as to improve the positioning accuracy of the turbine shell. At the same time, a lever-type clamping device is provided on the turbine shell center hole positioning seat and the turbine shell flange positioning seat to achieve effective clamping of the turbine shell. In addition, compared with the prior art welding tooling adopting a push rod + slide rail type clamping structure, the lever-type clamping device is provided to avoid long-term repeated use of the clamping device, and the force deformation caused by the continuous impact on the positioning seat leads to a decrease in the positioning accuracy of the positioning seat.

[0011] Preferably, the clamping block on the rocker arm positioning seat includes a rocker arm angle clamping block and a rocker arm pressing block; the rocker arm angle clamping block is a second lever type clamping device; the second lever type clamping device includes a second lever hydraulic cylinder and a second clamping head; the second clamping head is hinged to the rocker arm mounting plate, one end of which is connected to the power end of the second lever hydraulic cylinder, and the other end is a free end that clamps the rocker arm to the limiting part of the rocker arm angle limit block; the rocker arm pressing block includes a pressing seat, a press and a floating pressure head; the pressing seat is fixedly installed on the base, and a slide rail is provided in the direction of the bypass valve shaft hole, and a floating pressure head is provided. The pressure head is made of high temperature resistant and wear-resistant material, and is slidably installed on the slide rail; one end of the floating pressure head is connected to the power end of the press, and the other end is installed with a pressure block as a clamping end; a reversing block is installed between the pressure block and the clamping end of the floating pressure head; a first groove is provided on the clamping end of the floating pressure head, a first rotating shaft is provided in the first groove, and the reversing block is installed in the first groove by rotating on the first rotating shaft, and a second groove is provided on the reversing block, a second rotating shaft perpendicular to the first rotating shaft is provided in the second groove, and the pressure block is installed in the second groove by rotating on the second rotating shaft; The power end of the press is provided with a first pressure sensor and a first power end displacement sensor, and the first pressure sensor and the first power end displacement sensor are electrically connected to the data module respectively. The present invention sets a second lever-type clamping device to clamp the rocker arm to the rocker arm angle limit block, and sets a rocker arm clamping block to clamp the rocker arm toward the bypass valve shaft direction, so as to achieve the locking of the rocker arm welding angle while clamping the rocker arm. The rocker arm clamping block of the present invention adopts a universal floating pressure head made of high-temperature resistant material, which can double guarantee the service life of the pressure head from the material and mechanical structure, avoid the failure of the rocker arm clamping block caused by thermal deformation caused by laser welding heat and precision wear caused by long-term repeated pressing, thereby affecting the important product characteristics of the welding gap. In addition, the power end of the press of the present invention is provided with a first pressure sensor and a first power end displacement sensor, and the first pressure sensor and the first power end displacement sensor are electrically connected to the data module respectively, so as to realize real-time monitoring of the pressing process of each clamping in the production process, and set boundary conditions through the pressure-displacement curve to ensure the consistency of the clamping force and displacement, thereby ensuring the process error prevention capability of the welding gap.

[0012] Preferably, a bypass valve clamping block is installed on the base, and the bypass valve clamping block includes a mounting plate, a valve face clamping block and a rotating shaft lifting block; the mounting plate is slidably mounted on the base toward the bypass valve, and a first servo electric cylinder and a second servo electric cylinder are mounted on the mounting plate; the valve face clamping block is fixedly mounted on the power end of the first servo electric cylinder to be used to stop the bypass valve in a direction perpendicular to the valve face of the bypass valve; the body of the rotating shaft lifting block is hinged to the mounting plate, and one end thereof is connected to the power end of the second servo electric cylinder, and the other end extends to the bottom of the bypass valve rotating shaft to form a lifting end; the power ends of the first servo electric cylinder and the second servo electric cylinder are respectively provided with a second pressure sensor and a second power end displacement sensor, and the second pressure sensor and the second power end displacement sensor are respectively electrically connected to the data module. The present invention uses a valve face clamping block and a rotating shaft lifting block to clamp and fix the bypass valve perpendicular to the bypass valve face and along the bypass valve rotating shaft hole direction, so as to ensure that the welding gap between the bypass valve and the rocker arm can remain stable during welding, thereby improving the welding quality. The present invention uses a first servo electric cylinder and a second servo electric cylinder as power units for the valve face clamping block and the rotating shaft lifting block, so as to avoid the fluctuation of the clamping force caused by the fluctuation of pipeline air pressure in the welding tooling using a cylinder power unit in the prior art, realize the stability of the clamping force during welding, and realize the tolerance definition of pressure and displacement through the second pressure sensor and the second power end displacement sensor, so as to realize effective process error prevention for the clamping action, thereby further improving the welding quality.

[0013] Preferably, the error-proofing component also includes a photographic error-proofing unit and a component identification code; the photographic error-proofing unit includes a camera; the camera is provided with an identification module, and its lens faces the welding area of ​​the rocker arm and the bypass valve shaft; the component identification codes are respectively provided on the rocker arm and the bypass valve, and the identification module is electrically connected to the data module. The welding tooling of the present invention is integrated with a photographic error-proofing unit, which can automatically identify components such as rocker arms and bypass valves to determine abnormal welding conditions such as component omission, component model error, component placement error, welding leakage, welding deviation, etc. during welding, so as to reduce the risk of welding abnormalities. The identification module and the data module of the present invention are electrically connected to realize that all detectable component characteristic parameters and process parameters are associated with the component body identification code and stored in the data storage module, so as to realize all-round management and precise tracing of automated and digitized production processes.

[0014] As a preferred embodiment, the control component also includes a display screen and an alarm; the display screen and the data module are electrically connected; the alarm and the controller are electrically connected; the data storage module is provided with a cloud storage unit; the controller is also provided with a signal parameter editing module for parameter editing of one or more signals including gas circuit signals, electrical signals or PLC logic signals. The present invention sets a display screen and an alarm to realize the visual display of driving parameters such as whether the components are effectively positioned during the welding process, the clamping parameters of the components before welding, and the displacement and pressure of the power end of the power unit during the welding process, so as to facilitate real-time monitoring of the welding process, daily monitoring and process inspection, and timely shutdown alarm for abnormal process conditions. The present invention is also provided with a signal parameter editing module to realize the adaptive adjustment of data parameters when welding different types of turbine shell rocker arms, so as to realize functions such as automatic loading and unloading, one-button clamping, signal analysis and timely shutdown alarm for abnormal process, data series connection and cloud storage, so as to ensure the automation, dataization and intelligence of the entire welding process. Beneficial Effects

[0015] The servo-driven turbine shell rocker arm welding tool of the present invention includes a positioning component, a clamping component, an error-proofing component and a control component, wherein the positioning seats of the positioning component are divided into a turbine shell positioning seat, a rocker arm positioning seat and a bypass valve positioning seat according to the positioning object to form a main positioning seat; the rocker arm positioning seat and the bypass valve positioning seat are respectively installed on the turbine shell positioning seat to form a pre-positioning seat with the main positioning seat as the component positioning position. The present invention uses the turbine shell positioning seat as the main positioning seat, and installs the rocker arm positioning seat and the bypass valve positioning seat on the main positioning seat for positioning and installation of the rocker arm and the bypass valve, so as to reduce the cumulative positioning error between the turbine shell, the rocker arm and the bypass valve, and improve the positioning accuracy of the components. The main positioning seat and the pre-positioning seat are set at the same time, so that the component discharge equipment can place the turbine shell with the main positioning seat, and then place the rocker arm and the bypass valve with the pre-positioning seat, so as to automatically load and unload materials, thereby improving the automation of the welding tool. At the same time, in order to ensure that the turbine housing, rocker arm and bypass valve are effectively positioned and installed, the present invention provides a contact or touch-type sensor on the positioning seat or positioning surface to automatically sense the installation of the components to improve the positioning accuracy of the components.

[0016] On the basis of the above, the clamping assembly of the present invention includes a turbine housing clamping device using a first lever-type clamping device; a rocker arm clamping device using a second lever-type clamping device to press the rocker arm against the rocker arm angle limit block. The use of the lever-type clamping device can avoid the lack of positioning accuracy caused by the force deformation caused by the continuous impact on the positioning seats of the turbine housing, rocker arm and bypass valve components during long-term repeated use. A rocker arm clamping block is set to press the rocker arm toward the bypass valve shaft hole, and the rocker arm clamping block of the present invention also uses a universal floating pressure head made of high-temperature resistant material to achieve a dual guarantee of the service life of the pressure plate from the material and mechanical structure, avoiding the failure of the clamping mechanism caused by thermal deformation caused by laser welding heat and precision wear caused by long-term repeated pressing, thereby affecting the welding gap, an important product feature. The bypass valve clamping device of the present invention uses a valve face clamping block and a rotating shaft lifting block to clamp and fix the bypass valve perpendicular to the bypass valve face and along the bypass valve rotating shaft hole, so as to ensure that the welding gap between the bypass valve and the rocker arm can remain stable during welding, thereby improving the welding quality. In addition, the clamping device of the bypass valve of the present invention uses a servo electric cylinder as a power unit to avoid the fluctuation of the clamping force caused by the fluctuation of the pipeline air pressure in the welding tooling using a cylinder power unit in the prior art, thereby achieving the stability of the clamping force during welding.

[0017] On the basis of the above, the error-proofing component of the present invention includes a sensor and a data module, and the sensor is installed on the positioning seat and the power unit respectively; wherein a sensor is arranged on the positioning seat or the positioning surface to determine whether the turbine housing, the rocker arm and the bypass valve are effectively positioned, and a distance sensor is arranged on the rocker arm mounting plate to prevent the rocker arm from being improperly installed and causing the welding angle to be out of tolerance. Pressure and displacement sensors are arranged on the power ends of the press, the first servo electric cylinder and the second servo electric cylinder, and are electrically connected to the data module to achieve tolerance definition of pressure and displacement, so that the pressing or clamping action of each power unit can be monitored and error-proofed. In addition, the error-proofing component of the present invention is also provided with a photographic error-proofing unit and a component identification code, so as to realize automatic identification and determination of components such as the turbine housing, the rocker arm and the bypass valve during the welding process, so as to determine the effective placement of components, model identification, avoid process abnormalities such as missed welding and welding deviation, reduce welding abnormalities, and improve welding yield.

[0018] On the basis of the above, the control component of the present invention also includes a display screen and an alarm; the display screen and the data module are electrically connected; the alarm and the controller are electrically connected; the data storage module is provided with a cloud storage unit; the controller is also provided with a signal parameter editing module for parameter editing of one or more signals including gas circuit signals, electrical signals or PLC logic signals. This arrangement is to achieve that during the welding process, the product characteristics (including welding angle, welding gap, welding preload) generated by the welding process are greatly improved in the batch production process capacity, and CPK is greater than 1.67, which greatly reduces the scrap rate of the welding process. The welding tooling of the present invention can realize the functions of automatic loading and unloading, one-button clamping, signal analysis and timely shutdown alarm for process abnormalities, data series connection and cloud storage, which greatly improves the production efficiency and solves the various disadvantages of traditional manual clamping, such as cumbersome operation, high labor intensity, clamping rhythm, and prone to abnormalities in the clamping process. In addition, the data module of the error-proofing component of the present invention is electrically connected to the data storage module of the control component to realize the design of various error-proofing schemes and the effective judgment and storage monitoring of process data, which greatly improves the stability of the welding process production process, greatly reduces the potential functional failure risk in the welding process, and realizes the automation, dataization and intelligence of the entire welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a servo-driven turbine housing rocker arm welding tooling of an embodiment; Figure 2 It is a structural side view of a servo-driven turbine housing rocker arm welding tooling of an embodiment; Figure 3 A schematic structural diagram (1) of a turbine housing positioning seat of a servo-driven turbine housing rocker arm welding tooling of an embodiment; Figure 4 A schematic structural diagram (2) of a turbine casing positioning seat of a servo-driven turbine casing rocker arm welding tooling of an embodiment; Figure 5 A schematic structural diagram (3) of a turbine casing positioning seat of a servo-driven turbine casing rocker arm welding tooling of an embodiment; Figure 6 It is a structural schematic diagram of a rocker arm positioning seat of a servo-driven turbine housing rocker arm welding tooling of an embodiment; Figure 7 It is a schematic structural diagram of the bypass valve positioning seat of the servo-driven turbine housing rocker arm welding tooling of the embodiment. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0021] See also Figure 1-Figure 7The present embodiment provides a servo-driven turbine shell rocker arm welding tool, including a positioning component, a clamping component, an error-proofing component and a control component. The positioning component includes a base 1 and a plurality of positioning seats, and the plurality of positioning seats are fixedly mounted on the base, respectively, for positioning and mounting the turbine shell A, the rocker arm B and the bypass valve C; the clamping component includes a plurality of clamping blocks and a power unit, and the plurality of clamping blocks are respectively mounted on the base or the positioning seat, and one end of the clamping blocks is connected to the power end of the power unit, for clamping and fixing the turbine shell, the rocker arm and the bypass valve on the positioning seat; the error-proofing component includes a sensor and a data module, and the sensor is respectively mounted on the positioning seat and the power unit, and the sensor is electrically connected to the data module, so as to detect the positioning of the turbine shell, the rocker arm and the bypass valve and detect the driving parameters of the power unit; the control component includes a controller and a data storage module, and the power unit, the error-proofing component and the data storage module are respectively electrically connected to the controller.

[0022] The several positioning seats of this embodiment are divided into a turbine casing positioning seat 2, a rocker arm positioning seat 3 and a bypass valve positioning seat 4 according to the positioning objects; the turbine casing positioning seat 2 is fixedly installed on the base 1 to form a main positioning seat; the rocker arm positioning seat 3 and the bypass valve positioning seat 4 are respectively installed on the turbine casing positioning seat 2 to form a pre-positioning seat with the main positioning seat as the component positioning position.

[0023] Specifically, the turbine housing locating seat 2 of this embodiment includes a turbine housing center hole locating seat 20 and a turbine housing flange locating seat 21; the turbine housing center hole locating seat includes a column 201 and a center hole column 202; the center hole column 202 is fixedly mounted on the column 201, and a step-shaped locating surface 203 is provided on the center hole column, and the step-shaped locating surface is provided with a conical arc chamfer; a flange locating block 210 is provided on the turbine housing flange locating seat 21; the turbine housing A is sleeved on the center hole column through the blade shaft hole, and the turbine housing air inlet surface abuts against the step-shaped locating surface 203, and the mounting flange abuts against the flange locating block 210 to be positioned and installed on the turbine housing locating seat; the rocker arm locating seat 3 is installed on the column 201; and the bypass valve locating seat 4 is installed on the center hole column 202. Contact sensors (not shown) are provided on the step-shaped locating surface and the flange locating block of the turbine housing center hole locating seat to sense whether the turbine housing is effectively positioned and installed. In this embodiment, a clamping block 204 is provided on both sides of the center line of the center hole column on the column 201 on the center hole positioning seat of the turbine shell, and a clamping block 204 is provided on the flange positioning block on the flange positioning seat of the turbine shell, so as to fix and clamp the turbine shell on the positioning surface; specifically, the clamping blocks on the center hole positioning seat of the turbine shell and the flange positioning seat of the turbine shell are the first lever type clamping device; the first lever type clamping device includes a first lever hydraulic cylinder 205 and a first clamping head 206; the first clamping head is hinged to the positioning seat, one end of which is connected to the power end of the first lever hydraulic cylinder 205, and the other end is a free end to constitute a clamping part for the turbine shell.

[0024] Furthermore, the rocker arm positioning seat 3 of the present embodiment includes a rocker arm mounting plate 30 and a rocker arm angle limit block 31; the rocker arm mounting plate 30 is slidably mounted on the column 201 by being connected to the power end of the first cylinder 300, and one end thereof extends toward the bypass valve shaft hole, forming a rocker arm pre-positioning portion 301 between the rocker arm and the bypass valve shaft hole; the rocker arm angle limit block 31 is mounted on the column, and one end thereof extends toward the rocker arm to form a limit portion 310, on which a contact-type sensor (not shown) is mounted; the rocker arm B is mounted on the rocker arm pre-positioning portion 301, and it limits the welding angle of the rocker arm by abutting against the limit portion of the rocker arm angle limit block; a laser ranging sensor 302 is mounted on the rocker arm mounting plate 30, and the sensing end of the laser ranging sensor faces the contact-type sensor. The clamping block 3 on the rocker arm positioning seat of this embodiment includes a rocker arm angle clamping block 303 and a rocker arm pressing block 304; the rocker arm angle clamping block 303 is a second lever type clamping device; the second lever type clamping device includes a second lever hydraulic cylinder 305 and a second clamping head 306; the second clamping head 306 is hinged to the rocker arm mounting plate 30, one end of which is connected to the power end of the second lever hydraulic cylinder 305, and the other end is a free end to clamp the rocker arm B to the limiting portion 310 of the rocker arm angle limiting block; the rocker arm pressing block 304 includes a pressing seat 307, a press 308 and a floating pressure head 309; the pressing seat 307 is fixedly installed on The base 1 is provided with a slide rail toward the bypass valve shaft hole, the floating pressure head is made of high temperature resistant and wear-resistant material, and is slidably mounted on the slide rail; one end of the floating pressure head is connected to the power end of the press, and the other end is provided with a pressure block as a clamping end; a reversing block is installed between the pressure block and the clamping end of the floating pressure head; a first groove is provided on the clamping end of the floating pressure head, a first rotating shaft is provided in the first groove, the reversing block is installed in the first groove by being rotatably mounted on the first rotating shaft, and a second groove is provided on the reversing block, a second rotating shaft perpendicular to the first rotating shaft is provided in the second groove, and the pressure block is installed in the second groove by being rotatably mounted on the second rotating shaft; Furthermore, a first pressure sensor and a first power end displacement sensor are provided on the power end of the press, and the first pressure sensor and the first power end displacement sensor are electrically connected to the data module respectively.

[0025] In addition, the bypass valve positioning seat 4 of the present embodiment includes a support plate 40, and one end of the center hole column away from the stepped positioning surface extends to the exhaust port side of the turbine casing to form an extended end 41; one end of the support plate 40 is hinged to the extended end through a return spring, and its free end constitutes the positioning portion of the bypass valve.

[0026] A bypass valve clamping block 42 is installed on the base of the present embodiment, and the bypass valve clamping block includes a mounting plate 43, a valve face clamping block 44 and a rotating shaft lifting block 45; in order to avoid spatial conflict between the turbine shell positioning seat on the base and the mounting plate and to facilitate automatic loading of the bypass valve, a sliding seat 46, a first transverse slide rail and a second transverse slide rail perpendicular to each other, and a second cylinder and a third cylinder are provided on the base of the present embodiment. The sliding seat 46 is installed on the first transverse slide rail along a transverse sliding motion relative to the turbine shell, and one end of the sliding seat is connected to the power end of the second cylinder. A second transverse slide rail is installed on the sliding seat toward the bypass valve, and the mounting plate 43 is slidably installed on the second transverse slide rail, and one end of the sliding seat is connected to the power end of the third cylinder. In addition, a first servo electric cylinder 47 and a second servo electric cylinder 48 are installed on the mounting plate of the present embodiment; the valve face tightening block 44 is fixedly mounted on the power end of the first servo electric cylinder to stop the bypass valve in a direction perpendicular to the valve face of the bypass valve; the body of the rotating shaft lifting block 45 is hinged to the mounting plate, and one end thereof is connected to the power end of the second servo electric cylinder, and the other end extends to the bottom of the bypass valve rotating shaft to form a lifting end; the power ends of the first servo electric cylinder and the second servo electric cylinder are respectively provided with a second pressure sensor and a second power end displacement sensor, and the second pressure sensor and the second power end displacement sensor are respectively electrically connected to the data module.

[0027] In addition, the error prevention component of the present embodiment also includes a photographic error prevention unit 5 and a component identification code. The component identification code of the present embodiment adopts a two-dimensional code, and the photographic error prevention unit includes a camera; the camera is provided with an identification module, and its lens faces the welding area of ​​the rocker arm and the bypass valve shaft; the component identification code is respectively set on the rocker arm and the bypass valve, and the identification module is electrically connected to the data module.

[0028] Furthermore, the control component of this embodiment also includes a display screen 6 and an alarm; the display screen and the data module are electrically connected; the alarm and the controller are electrically connected; the data storage module is provided with a cloud storage unit; the controller is also provided with a signal parameter editing module for editing parameters of one or more signals including gas circuit signals, electrical signals or PLC logic signals.

[0029] Working principle: Before using the servo-driven turbine shell rocker arm welding tooling of this embodiment, the operator selects the appropriate rocker arm and bypass valve according to the model and specification of the turbine shell. According to the model and specification of the turbine shell, the operator selects the appropriate operating parameters in the data storage module of the controller and selects the corresponding working mode. When the welding tool of this embodiment is in use, the turbine shell, rocker arm and bypass valve are first moved to the welding tool through the loading equipment, and then the loading equipment clamps the turbine shell and transfers it to the turbine shell positioning seat, and the blade shaft hole of the turbine shell is sleeved on the center hole column until the turbine shell inlet surface is against the stepped positioning surface, and the mounting flange of the turbine shell is against the flange positioning block. When the contact sensors on the stepped positioning surface and the flange positioning block sense that the turbine shell is effectively positioned, the loading equipment is moved out. At this time, the welding tool determines that the turbine shell has been effectively positioned, and can control the first lever hydraulic cylinder on the turbine shell positioning seat and the flange positioning block to start, so as to drive the first clamping head to clamp the turbine shell inlet surface to the stepped positioning surface and the mounting flange of the turbine shell to the flange positioning block, respectively, to complete the positioning and clamping process of the turbine shell. Similar to this is the positioning and clamping of the rocker arm and the bypass valve. Since the turbine shell has been positioned and clamped, a rocker arm pre-positioning portion is formed between the rocker arm mounting plate and the bypass valve shaft hole. However, since the bypass valve has not been positioned and installed, the rocker arm cannot be welded against the bypass valve shaft, so the bypass valve needs to be positioned and installed first. Specifically, the bypass valve is moved in from the exhaust port side of the turbine shell through the loading equipment and moved toward the positioning portion of the bypass valve. During the transfer process, the bypass valve will push the support plate to rotate around the hinge point and compress the reset spring to store energy until the free end of the support plate is disengaged from the side of the bypass valve and rotates and resets under the elastic force of the reset spring, driving the bypass valve to move toward the exhaust valve port and driving the bypass valve shaft to insert into the bypass valve shaft hole to achieve the positioning and installation of the bypass valve. Then the loading equipment is moved out, and the bypass valve is towed by the support plate to prevent it from falling due to its own weight. When the bypass valve is positioned and installed, the controller controls the second cylinder and the third cylinder to drive the sliding seat to drive the mounting plate to slide toward the turbine shell, and controls the first servo electric cylinder and the second servo electric cylinder to start, so as to drive the valve face tightening block and the rotating shaft lifting block to press and fix the bypass valve perpendicular to the bypass valve face and along the bypass valve rotating shaft hole. After the bypass valve is positioned and installed, the loading equipment moves the rocker arm to the rocker arm pre-positioning part. When the contact sensor on the limit part of the rocker arm angle limit block senses the rocker arm, the controller controls the second lever hydraulic cylinder to drive the second clamping head to stop the rocker arm at the rocker arm angle limit block, and at the same time controls the press to drive the floating pressure head to press the rocker arm toward the bypass valve rotating shaft to complete the positioning and installation of the rocker arm.

[0030] After the positioning and fixing of the turbine housing, rocker arm and bypass valve are completed, the rocker arm and bypass valve shaft can be automatically welded by automated machine welding equipment. The automatic loading and one-button clamping of the above components, through the automated control of error-proofing components and control components, greatly improves production efficiency, and solves the various drawbacks of traditional manual clamping, such as cumbersome operation, high labor intensity, slow clamping rhythm, and prone to abnormalities in the clamping process. It should be noted that when performing automated welding of turbine housings of different models and specifications, the operator can use the signal parameter editing module of the control component to perform multiple adaptability debugging of the welding tooling to obtain the appropriate component parameters and drive parameters, and can store them in the cloud through the data storage module to update the database of the data storage module to facilitate the welding of turbine housing rocker arms of different models and specifications.

[0031] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A servo-driven turbine housing rocker arm welding tool, comprising a positioning assembly, a clamping assembly, an error-proofing assembly and a control assembly, characterized in that: The positioning assembly includes a base and a plurality of positioning seats, and the plurality of positioning seats are fixedly mounted on the base, and are used for positioning and mounting a turbine housing, a rocker arm, and a bypass valve; the clamping assembly includes a plurality of clamping blocks and a power unit, and the plurality of clamping blocks are respectively mounted on the base or the positioning seat, and one end of the clamping blocks is connected to the power end of the power unit, and is used for clamping and fixing the turbine housing, the rocker arm, and the bypass valve on the positioning seat; the error-proofing assembly includes a sensor and a data module, and the sensor is respectively mounted on the positioning seat and the power unit, and the sensor is electrically connected to the data module, so as to detect the positioning of the turbine housing, the rocker arm, and the bypass valve, and detect the driving parameters of the power unit; the control assembly includes a controller and a data storage module, and the power unit, the error-proofing assembly, and the data storage module are respectively electrically connected to the controller.

2. A servo-driven turbine housing rocker arm welding tool according to claim 1, characterized in that: A plurality of positioning seats are divided into a turbine casing positioning seat, a rocker arm positioning seat and a bypass valve positioning seat according to the positioning object; the turbine casing positioning seat is fixedly installed on the base to form a main positioning seat; the rocker arm positioning seat and the bypass valve positioning seat are respectively installed on the turbine casing positioning seat to form a pre-positioning seat with the main positioning seat as the component positioning position.

3. The servo-driven turbine housing rocker arm welding tool according to claim 2, characterized in that: The turbine shell locating seat includes a turbine shell center hole locating seat and a turbine shell flange locating seat; the turbine shell center hole locating seat includes a column and a center hole column; the center hole column is fixedly installed on the column, and a step-shaped locating surface is provided on the center hole column, and the step-shaped locating surface is provided with a conical arc chamfer; the turbine shell flange locating seat is provided with a flange locating block; the turbine shell is sleeved on the center hole column through the blade shaft hole, and the turbine shell air inlet surface is abutted against the step-shaped locating surface, and the mounting flange is abutted against the flange locating block to be positioned and installed on the turbine shell locating seat; the rocker arm locating seat is installed on the column; the bypass valve locating seat is installed on the center hole column.

4. A servo-driven turbine housing rocker arm welding tool as claimed in claim 3, characterized in that: The rocker arm positioning seat includes a rocker arm mounting plate and a rocker arm angle limit block; the rocker arm mounting plate is fixedly or slidably mounted on the column, and one end of the rocker arm mounting plate extends toward the bypass valve shaft hole to form a rocker arm pre-positioning portion between the rocker arm mounting plate and the bypass valve shaft hole; the rocker arm angle limit block is mounted on the column, and one end of the rocker arm angle limit block extends toward the rocker arm to form a limit portion, and a contact sensor is mounted on the limit portion; the rocker arm is mounted on the rocker arm pre-positioning portion, and the rocker arm is limited by the limit portion abutting against the rocker arm angle limit block to limit the welding angle of the rocker arm; a distance sensor is mounted on the rocker arm mounting plate, and the sensing end of the distance sensor faces the contact sensor.

5. The servo-driven turbine housing rocker arm welding tool according to claim 3, characterized in that: The bypass valve positioning seat includes a support plate, and one end of the center hole column away from the stepped positioning surface extends to the exhaust port side of the turbine shell to form an extended end; one end of the support plate is hinged to the extended end through an elastic member, and its free end constitutes the positioning part of the bypass valve.

6. The servo-driven turbine housing rocker arm welding tool according to claim 3, characterized in that: The step-shaped positioning surface and the flange positioning block are respectively provided with contact-type sensing parts to sense the positioning installation of the turbine shell; At least one clamping block is respectively provided on the turbine shell center hole positioning seat and the turbine shell flange positioning seat, so as to fix and clamp the turbine shell to the positioning surface; the clamping blocks on the turbine shell center hole positioning seat and the turbine shell flange positioning seat are first lever-type clamping devices; the first lever-type clamping device includes a first lever hydraulic cylinder and a first clamping head; the first clamping head is hinged to the positioning seat, one end of which is connected to the power end of the first lever hydraulic cylinder, and the other end is a free end constituting a clamping part for the turbine shell.

7. The servo-driven turbine housing rocker arm welding tool according to claim 4, characterized in that: The clamping block on the rocker arm positioning seat includes a rocker arm angle clamping block and a rocker arm pressing block; the rocker arm angle clamping block is a second lever-type clamping device; the second lever-type clamping device includes a second lever hydraulic cylinder and a second clamping head; the second clamping head is hinged to the rocker arm mounting plate, one end of which is connected to the power end of the second lever hydraulic cylinder, and the other end is a free end that clamps the rocker arm to the limiting part of the rocker arm angle limit block; the rocker arm pressing block includes a pressing seat, a press and a floating pressure head; the pressing seat is fixedly installed on the base, and a slide rail is provided in the direction of the bypass valve shaft hole, and the floating pressure head The pressure head is made of high temperature resistant and wear-resistant material, and is slidably installed on the slide rail; one end of the floating pressure head is connected to the power end of the press, and the other end is installed with a pressure block as a clamping end; a reversing block is installed between the pressure block and the clamping end of the floating pressure head; a first groove is provided on the clamping end of the floating pressure head, a first rotating shaft is provided in the first groove, and the reversing block is installed in the first groove by rotating on the first rotating shaft, and a second groove is provided on the reversing block, a second rotating shaft perpendicular to the first rotating shaft is provided in the second groove, and the pressure block is installed in the second groove by rotating on the second rotating shaft; A first pressure sensor and a first power end displacement sensor are provided on the power end of the press, and the first pressure sensor and the first power end displacement sensor are electrically connected to the data module respectively.

8. The servo-driven turbine housing rocker arm welding tool according to claim 5, characterized in that: A bypass valve clamping block is installed on the base, and the bypass valve clamping block includes a mounting plate, a valve face clamping block and a rotating shaft lifting block; the mounting plate is slidably mounted on the base toward the bypass valve, and a first servo electric cylinder and a second servo electric cylinder are mounted on the mounting plate; the valve face clamping block is fixedly mounted on the power end of the first servo electric cylinder to stop at the bypass valve in a direction perpendicular to the valve face of the bypass valve; the body of the rotating shaft lifting block is hinged to the mounting plate, and one end of the block is connected to the power end of the second servo electric cylinder, and the other end extends to the bottom of the bypass valve rotating shaft to form a lifting end; the power ends of the first servo electric cylinder and the second servo electric cylinder are respectively provided with a second pressure sensor and a second power end displacement sensor, and the second pressure sensor and the second power end displacement sensor are respectively electrically connected to the data module.

9. A servo-driven turbine housing rocker arm welding tool as claimed in claim 1, characterized in that: The error-proofing component also includes a photographic error-proofing unit and a component identification code; the photographic error-proofing unit includes a camera; the camera is provided with an identification module, and its lens faces the welding area of ​​the rocker arm and the bypass valve shaft; the component identification code is respectively arranged on the rocker arm and the bypass valve, and the identification module is electrically connected to the data module.

10. The servo-driven turbine housing rocker arm welding tool according to claim 9, characterized in that: The control component also includes a display screen and an alarm; the display screen is electrically connected to a data module; the alarm is electrically connected to a controller; the data storage module is provided with a cloud storage unit; the controller is also provided with a signal parameter editing module for performing parameter editing on one or more signals including gas circuit signals, electrical signals or PLC logic signals.

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