WO2023168962A1

WO2023168962A1 - Rotational isolation mechanism and friction welding machine

Info

Publication number: WO2023168962A1
Application number: PCT/CN2022/129117
Authority: WO
Inventors: 张春波; 李睿; 乌彦全; 梁武; 秦丰; 李运雷; 周军; 赵玉珊; 王祁; 杨海峰; 闫翰林; 张文瀚; 许明; 金尕迪; 林跃
Original assignee: 哈尔滨焊接研究院有限公司
Priority date: 2022-03-11
Filing date: 2022-11-02
Publication date: 2023-09-14
Also published as: NL2034298B1; CN114406445A; NL2034298A

Abstract

A rotational isolation mechanism, comprising a guide disc (1) and multiple adjustment mechanisms (2). The guide disc is movably provided on a tailstock integrated body; the tailstock integrated body is used for mounting a tailstock workpiece; the guide disc is provided with a through hole; multiple rollers are evenly provided on the inner wall of the through hole in the circumferential direction of the through hole; partial side walls of the rollers can be in contact simultaneously with the outer wall of a rotational positioning body; and the rotational positioning body is used for mounting a spindle workpiece. All the adjustment mechanisms are fixedly provided on the tailstock integrated body; the multiple adjustment mechanisms are distributed around the guide disc; the radial position of the guide disc can be adjusted by the adjustment mechanisms working in conjunction, so as to enable the guide disc to be coaxial with the rotational positioning body, and the position of the guide disc can be locked. Also provided is a friction welding machine comprising the rotational isolation mechanism. According to the rotational isolation mechanism and the friction welding machine, a workpiece can be prevented from shifting during welding.

Description

Rotating isolation mechanism and friction welding machine

Technical field

The present invention relates to the technical field of friction welding, and in particular to a rotating isolation mechanism and a friction welding machine.

Background technique

As an important component of an aerospace engine, the compressor is a mechanical device that transmits mechanical energy to the gas to complete the compression of the gas medium in the engine thermal cycle, thereby increasing the gas pressure. The compressor disk is an important part of the compressor. The traditional connections between the disks at all levels are mechanical bolt connection and electron beam welding. However, the mechanical connection causes the compressor disk to be thicker and of higher quality, which increases the overall cost of the engine. Weight is not conducive to the improvement of the thrust-to-weight ratio and performance of aeroengines. The electron beam welding method has higher heat input, larger welding deformation, higher post-weld residual stress, and difficulty in welding dissimilar materials, making it difficult to fully meet the needs of aeroengine compressors. The design and manufacturing requirements of the disk have seriously restricted the improvement of the overall performance of the aeroengine. Friction welding can meet the welding requirements of the compressor disk, but the existing friction welding machine constrains the workpiece to easily deflect due to torque during the welding process, resulting in the workpiece not meeting the welding requirements.

Contents of the invention

The purpose of the present invention is to provide a rotary isolation mechanism and a friction welding machine to solve the problems existing in the above-mentioned prior art and to prevent the workpiece from shifting during the welding process.

In order to achieve the above objects, the present invention provides the following solutions:

The invention provides a rotating isolation mechanism, which includes: a guide plate and a plurality of adjustment mechanisms. The guide plate is used to be movably arranged on a tailstock integrated body. The tailstock integrated body is used to install a tailstock workpiece. The guide plate is used to install a tailstock workpiece. There is a through hole on the plate, and a plurality of rollers are evenly arranged on the inner wall of the through hole along the circumferential direction of the through hole. Part of the side wall of each roller can be in contact with the outer wall of the rotation positioning body at the same time. The rotation positioning body is For installing the spindle workpiece; each of the adjustment mechanisms is used to be fixedly arranged on the tailstock integrated body, and a plurality of the adjustment mechanisms are distributed around the guide plate, and the guide can be adjusted by the cooperation of each adjustment mechanism. The radial position of the disk is adjusted to make the guide disk coaxial with the rotation positioning body, and the position of the guide disk can be locked.

Preferably, each of the adjustment mechanisms includes a first driving device and a first adjustment structure, the first driving device is drivingly connected to the first adjustment structure, and the guide plate is provided with a first adjustment structure corresponding to the first driving device. A plurality of second adjustment structures are driven by the first driving device to move the first adjustment structure. The movement of the first driving structure can drive the movement of the second adjustment structure, thereby causing the radial position of the guide plate to change. Change, the position of the guide plate can be locked by the cooperation of each of the first adjustment structures and the second adjustment structures.

Preferably, the first adjustment structure is an adjustment wedge fixedly connected to the output end of the first driving device, and the second adjustment structure is a fixed wedge distributed around the guide plate, and each adjustment wedge is The sliding surface of each adjusting wedge is in contact with the sliding surface of a corresponding fixed wedge. The sliding surface of each adjusting wedge is at an angle to its own movement direction. The first driving device can drive the Adjust the movement of the wedge to change the position of the guide plate.

Preferably, the first driving device is an oil cylinder.

Preferably, the first driving device includes a servo motor, a screw rod and a screw nut. The screw rod is drivingly connected to the output shaft of the servo motor. The screw rod is threadedly connected to the screw nut. The screw nut and the screw nut are threadedly connected. The adjusting wedge block is fixedly connected, and the servo motor drives the screw rod to rotate, so that the adjusting wedge block moves along the screw rod extension direction together with the screw nut.

The present invention also provides a friction welding machine, including the above-mentioned rotating isolation mechanism.

Compared with the prior art, the present invention achieves the following technical effects:

The rotation isolation mechanism and friction welding machine provided by the present invention can adjust the position of the guide plate on the tailstock integrated body through each adjustment mechanism, and the rotation positioning body on the spindle for installing the spindle workpiece can partially extend into the inside of the guide plate and In contact with the roller, the position of the guide plate can be locked through the adjustment mechanism. The guide plate plays a limiting role and can prevent the workpiece from shifting during the welding process. Therefore, the rotation isolation mechanism and friction welding machine provided by the present invention can prevent the workpiece from shifting during the welding process.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of the rotation isolation mechanism provided in Embodiment 1;

Figure 2 is a schematic diagram of the mechanism of the tailstock integrated body provided in Embodiment 1;

In the picture: 100-rotating isolation mechanism; 1-guide plate; 2-adjusting mechanism; 21-first driving device; 22-adjusting wedge; 23-locking mechanism; 3-fixed wedge.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The purpose of the present invention is to provide a rotation isolation mechanism to solve the problems existing in the prior art and to prevent the workpiece from shifting during the welding process.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1

This embodiment provides a rotation isolation mechanism 100, as shown in Figure 1, including a guide plate 1 and a plurality of adjustment mechanisms 2. The guide plate 1 is used to be movable on the tailstock integrated body, and the tailstock integrated body is used to install the tailstock. The guide plate 1 has a through hole, and a plurality of rollers are evenly arranged on the inner wall of the through hole along the circumferential direction of the through hole. Part of the side wall of each roller can be in contact with the outer wall of the rotating positioning body at the same time. The rotating positioning body is used to install the spindle. Workpiece; each adjustment mechanism 2 is used to be fixedly arranged on the tailstock integrated body. Multiple adjustment mechanisms 2 are distributed around the guide plate 1. The radial position of the guide plate 1 can be adjusted by the cooperation of each adjustment mechanism 2 so that the guide plate 1 is coaxial with the tailstock workpiece and can lock the guide plate 1 position.

The position of the guide plate 1 on the tailstock integrated body can be adjusted through each adjustment mechanism 2. The rotation positioning body on the spindle used to install the spindle workpiece can partially extend into the inside of the guide plate 1 and contact the roller. At the same time, it can be adjusted through the adjustment mechanism. 2. Lock the position of guide plate 1. Guide plate 1 plays a limiting role and can prevent the workpiece from shifting during the welding process.

The rotary positioning body is installed on the spindle. The spindle elastic chuck installed in the rotary positioning body can clamp the spindle workpiece. During welding, the rotary positioning body and the spindle workpiece also rotate synchronously with the spindle. The tailstock integrated body can be used to clamp the tailstock. The workpiece and the tailstock integrated body are provided with multiple pressure plates. The guide plate 1 can be installed on the tailstock integrated body through the pressure plate. The pressure plate can limit the axial movement of the guide plate 1. When performing friction welding work, first adjust the spindle. The workpiece is coaxial with the tailstock workpiece. There are preferably four adjustment mechanisms 2, which are respectively arranged at the lower left, lower right, upper left and upper right of the guide plate 1, among which the adjustment mechanisms 2 are located at the lower left and lower right of the guide plate 1. It is used to adjust the radial position of the guide plate 1. The adjustment mechanisms 2 located at the upper left and upper right of the guide plate 1 are used to cooperate with the adjustment mechanisms 2 located at the lower left and lower right of the guide plate 1 to lock and adjust the diameter. The locking mechanism 23 of the guide plate behind the position can make the guide plate 1 move in various directions in the radial direction by adjusting the adjustment mechanism 2 located at the lower left and lower right of the guide plate 1. By controlling the first driving device 21 The feed amount can achieve precise adjustment of the position of the guide plate 1. The guide plate 1 is adjusted by the adjustment mechanism 2 so that it is coaxial with the spindle workpiece and the tailstock workpiece. During the welding process, the guide plate 1 is placed on the rotation positioning body, and the rotation positioning The body drives the rollers to rotate together. Each roller has a rotating axis and can rotate independently, ensuring that the main shaft workpiece and the tailstock workpiece are always coaxial, and at the same time, it can avoid relative frictional motion between other parts, thus providing guidance and rotation isolation. effect.

Each adjusting mechanism 2 includes a first driving device 21 and a first adjusting structure. The first driving device 21 is drivingly connected to the first adjusting structure. A plurality of second adjusting structures are provided on the guide plate corresponding to the first adjusting structure. Through the first The driving device 21 drives the first adjustment structure to move. The movement of the first driving structure can drive the movement of the second adjustment structure, thereby changing the radial position of the guide plate 1. The first adjustment structure and the second adjustment structure cooperate to adjust the guide structure. Lock the disc in position 1.

The first adjustment structure is an adjustment wedge 22 fixedly connected to the output end of the first driving device 21. The second adjustment structure is a fixed wedge 3 distributed around the guide plate 1. The sliding surface of each adjustment wedge 22 and its corresponding setting The sliding surface of a fixed wedge 3 is in contact with each other, and the sliding surface of each adjusting wedge 22 is at an angle to its own movement direction. The first driving device 21 can drive the adjusting wedge 22 to move, thereby causing the position of the guide plate 1 to change. Change.

The first driving devices 21 located at the upper left and right upper sides are preferably oil cylinders.

The first driving device 21 located at the lower left and lower right includes a servo motor, a screw rod and a screw nut. The screw rod is drivingly connected to the servo motor output shaft, the screw rod and the screw nut are threaded, and the screw nut is fixedly connected to the adjusting wedge 22. By driving the screw rod to rotate with the servo motor, the adjusting wedge 22 can move along the screw rod extension direction together with the screw nut.

Embodiment 2

This embodiment is a friction welding machine, including the rotating isolation mechanism 100 in Embodiment 1.

Specific examples are used in the present invention to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, based on this The idea of the invention will be subject to change in the specific implementation and scope of application. In summary, the contents of this description should not be construed as limitations of the present invention.

Claims

A rotating isolation mechanism, characterized by: including:

Guide plate, the guide plate is used to be movably arranged on the tailstock integrated body, the tailstock integrated body is used to install the tailstock workpiece, the guide plate is provided with a through hole, and the inner wall of the through hole is along the A plurality of rollers are evenly arranged around the through hole, and part of the side wall of each roller can be in contact with the outer wall of the rotation positioning body at the same time. The rotation positioning body is used to install the spindle workpiece;

And a plurality of adjustment mechanisms, each of the adjustment mechanisms is used to be fixedly arranged on the tailstock integrated body, a plurality of the adjustment mechanisms are distributed around the guide plate, and the adjustment mechanisms can be adjusted by the cooperation of each adjustment mechanism. The radial position of the guide plate is adjusted to make the guide plate coaxial with the rotation positioning body, and the position of the guide plate can be locked.
The rotation isolation mechanism according to claim 1, characterized in that: each adjustment mechanism includes a first driving device and a first adjustment structure, the first driving device is drivingly connected to the first adjustment structure, and the A plurality of second adjustment structures are provided on the guide plate corresponding to the first adjustment structure. The first drive device drives the movement of the first adjustment structure, and the movement of the first drive structure can drive the second adjustment structure. Movement, thereby causing the radial position of the guide plate to change, and the position of the guide plate can be locked by the cooperation of each of the first adjustment structures and the second adjustment structure.
The rotation isolation mechanism according to claim 1, characterized in that: the first adjustment structure is an adjustment wedge fixedly connected to the output end of the first driving device, and the second adjustment structure is an adjustment wedge surrounding the guide plate. The fixed wedges are distributed, and the sliding surface of each adjusting wedge fits the sliding surface of a corresponding fixed wedge. The sliding surface of each adjusting wedge is aligned with its own movement direction. angle, the first driving device can drive the adjustment wedge to move, thereby changing the position of the guide plate.
The rotation isolation mechanism according to claim 2, characterized in that the first driving device is an oil cylinder.
The rotation isolation mechanism according to claim 2, characterized in that: the first driving device includes a servo motor, a screw rod and a screw nut, the screw rod is drivingly connected to the output shaft of the servo motor, the screw rod and The screw nut is threaded, and the screw nut and the adjusting wedge are fixedly connected. The servo motor drives the screw rod to rotate, so that the adjusting wedge can extend along the screw rod together with the screw nut. direction movement.
A friction welding machine, characterized in that it includes a rotation isolation mechanism according to any one of claims 1 to 5.