Rotary Isolation Mechanism and Friction Welding Machine

Abstract

The present invention discloses a rotary isolation mechanism, which relates to the technical field of friction welding. The rotary isolation mechanism includes: a guide disc and a plurality of adjustment mechanisms. The guide disc is used for being movably arranged on a tailstock assembly, and the tailstock assembly is used for installing a tailstock workpiece. A through hole is formed in the guide disc, and a plurality of rollers are uniformly arranged on the inner wall of the through hole along the circumferential direction of the through hole. Part of the side walls of each roller can simultaneously contact the outer wall of a rotary positioning body, and the rotary positioning body is used for installing a spindle workpiece. Each adjustment mechanism is used for being fixedly arranged on the tailstock assembly, and the plurality of adjustment mechanisms are distributed around the guide disc. By the cooperation of the adjustment mechanisms, the radial position of the guide disc can be adjusted to make the guide disc coaxial with the rotary positioning body, and the position of the guide disc can be locked. The present invention also provides a friction welding machine including the rotary isolation mechanism. The rotary isolation mechanism and the friction welding machine provided by the present invention can avoid the deviation of the workpiece during the welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of friction welding, and in particular to a rotary isolation mechanism and a friction welding machine. Background Art

[0002] As an important component of an aeroengine, a compressor is a mechanical device that transmits mechanical energy to a gas to complete the compression of the gas medium in the engine thermodynamic cycle, thereby increasing the gas pressure. As an important part of the compressor, the traditional connection between the disks at all levels is mechanical bolt connection and electron beam welding. However, mechanical connection results in a relatively large thickness and high mass of the compressor disk, increasing the overall weight of the engine, which is not conducive to improving the thrust-to-weight ratio and performance of the aeroengine. The electron beam welding method has a high heat input, large welding deformation, high residual stress after welding, and great difficulty in welding dissimilar materials, making it difficult to fully meet the manufacturing requirements of the design of the compressor disk of the aeroengine, seriously restricting 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 is prone to offset due to torque during the welding process, resulting in the workpiece not meeting the welding requirements. Summary of the Invention

[0003] 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 avoid the offset of the workpiece during the welding process.

[0004] To achieve the above purpose, the present invention provides the following solution:

[0005] The present invention provides a rotary isolation mechanism, including: a guiding disk and a plurality of adjusting mechanisms. The guiding disk is used for being movably arranged on the tailstock assembly, and the tailstock assembly is used for installing a tailstock workpiece. A through hole is formed in the guiding disk, and a plurality of rollers are uniformly arranged along the circumferential direction of the through hole on the inner wall of the through hole. A part of the side walls of each roller can simultaneously contact the outer wall of the rotary positioning body, and the rotary positioning body is used for installing a spindle workpiece; each of the adjusting mechanisms is used for being fixedly arranged on the tailstock assembly, and the plurality of adjusting mechanisms are distributed around the guiding disk. By cooperating with each other, the radial position of the guiding disk can be adjusted to make the guiding disk coaxial with the rotary positioning body, and the position of the guiding disk can be locked.

[0006] Preferably, each of the adjustment mechanisms includes a first driving device and a first adjustment structure. The first driving device is in transmission connection with the first adjustment structure. A plurality of second adjustment structures are arranged on the guide disk corresponding to the first adjustment structure. By driving the first adjustment structure to move through the first driving device, the movement of the first driving structure can drive the second adjustment structure to move, so that the radial position of the guide disk is changed. The position of the guide disk can be locked by the cooperation of each first adjustment structure and the second adjustment structure.

[0007] Preferably, the first adjustment structure is an adjustment wedge block fixedly connected to the output end of the first driving device, and the second adjustment structure is a fixed wedge block distributed around the guide disk. The sliding surfaces of the adjustment wedge blocks are in contact with the sliding surfaces of one fixed wedge block arranged corresponding to each of them. The sliding surfaces of the adjustment wedge blocks are all angled with respect to their own movement directions. The first driving device can drive the adjustment wedge blocks to move, so that the position of the guide disk is changed.

[0008] Preferably, the first driving device is an oil cylinder.

[0009] Preferably, the first driving device includes a servo motor, a lead screw, and a lead nut. The lead screw is in transmission connection with the output shaft of the servo motor. The lead screw is in threaded connection with the lead nut. The lead nut is fixedly connected to the adjustment wedge block. By driving the lead screw to rotate through the servo motor, the adjustment wedge block can move along the extension direction of the lead screw together with the lead nut.

[0010] The present invention also provides a friction welding machine, including the rotation isolation mechanism as described above.

[0011] The present invention has achieved the following technical effects compared with the prior art:

[0012] For the rotation isolation mechanism and the friction welding machine provided by the present invention, the position of the guide disk on the tailstock assembly can be adjusted through each adjustment mechanism. The rotation positioning body for installing the spindle workpiece on the spindle can partially extend into the guide disk and contact the rollers. At the same time, the position of the guide disk can be locked through the adjustment mechanism. The guide disk plays a limiting role and can prevent the workpiece from shifting during the welding process. Therefore, the rotation isolation mechanism and the friction welding machine provided by the present invention can prevent the workpiece from shifting during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the rotary isolation mechanism provided in the first embodiment;

[0015] Figure 2 It is a schematic diagram of the mechanism of the tailstock assembly provided in the first embodiment;

[0016] In the figure: 100 - rotary isolation mechanism; 1 - guide disk; 2 - adjustment mechanism; 21 - first driving device; 22 - adjustment wedge; 23 - locking mechanism; 3 - fixed wedge. Specific implementation manner

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part 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 making creative efforts shall fall within the protection scope of the present invention.

[0018] The purpose of the present invention is to provide a rotary isolation mechanism to solve the problems existing in the prior art and avoid the offset of workpieces during welding.

[0019] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0020] The first embodiment

[0021] This embodiment provides a rotary isolation mechanism 100, as Figure 1 shown, including a guide disk 1 and a plurality of adjustment mechanisms 2. The guide disk 1 is used to be movably arranged on the tailstock assembly, and the tailstock assembly is used to install the tailstock workpiece. A through hole is provided on the guide disk 1, and a plurality of rollers are evenly arranged along the circumferential direction of the through hole on the inner wall of the through hole. Part of the side walls of each roller can simultaneously contact the outer wall of the rotary positioning body, and the rotary positioning body is used to install the spindle workpiece; each adjustment mechanism 2 is used to be fixedly arranged on the tailstock assembly, and the plurality of adjustment mechanisms 2 are distributed around the guide disk 1. By the cooperation of each adjustment mechanism 2, the radial position of the guide disk 1 can be adjusted to make the guide disk 1 coaxial with the tailstock workpiece, and the position of the guide disk 1 can be locked.

[0022] Through each adjustment mechanism 2, the position of the guide disk 1 on the tailstock assembly can be adjusted. The rotary positioning body for installing the spindle workpiece on the spindle can partially extend into the guide disk 1 and contact the rollers. At the same time, the position of the guide disk 1 can be locked by the adjustment mechanism 2. The guide disk 1 plays a limiting role and can avoid the offset of the workpiece during welding.

[0023] The rotary positioning body is installed on the main shaft, and the main shaft workpiece can be clamped by the main shaft elastic chuck installed in the rotary positioning body. During welding, the rotary positioning body and the main shaft workpiece also rotate synchronously with the main shaft. The tailstock integrated body can be used to clamp the tailstock workpiece. A plurality of pressure plates are arranged on the tailstock integrated body, and 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, first adjust the main shaft workpiece and the tailstock workpiece to be coaxial. Preferably, there are 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 them, the adjustment mechanism 2 located at the lower left and lower right of the guide plate 1 is used to adjust the radial position of the guide plate 1, and the adjustment mechanism 2 located at the upper left and upper right of the guide plate 1 is used to adjust the radial position of the guide plate 1. The adjusting mechanism 2 at the lower left and right of the guide disk 1 cooperates to lock the locking mechanism 23 of the guide disk after the radial position is adjusted. By adjusting the adjusting mechanism 2 located at the lower left and right of the guide disk 1, the guide disk 1 can be moved in all directions in the radial direction. By controlling the feed amount of the first drive device 21, the position of the guide disk 1 can be accurately adjusted. The guide disk 1 is adjusted to be coaxial with the spindle workpiece and the tailstock workpiece through the adjusting mechanism 2. During the welding process, the guide disk 1 is mounted on the rotating positioning body, and the rotating positioning body drives the rollers to rotate together. Each roller has a rotating axis and can rotate independently, ensuring that the spindle workpiece and the tailstock workpiece are always coaxial. At the same time, relative friction movement between other components can be avoided, thereby playing a role in guiding and rotating isolation.

[0024] Each adjustment mechanism 2 includes a first driving device 21 and a first adjustment structure. The first driving device 21 is transmission-connected to the first adjustment structure. A plurality of second adjustment structures are arranged on the guide disk corresponding to the first adjustment structure. The first adjustment structure is driven to move by the first driving device 21. The movement of the first driving structure can drive the movement of the second adjustment structure, thereby changing the radial position of the guide disk 1. The position of the guide disk 1 can be locked by cooperating with the first adjustment structures and the second adjustment structures.

[0025] The first adjustment structure is an adjustment wedge block 22 fixedly connected to the output end of the first driving device 21, and the second adjustment structure is a fixed wedge block 3 distributed around the guide disk 1. The sliding surface of each adjustment wedge block 22 is in contact with the sliding surface of a corresponding fixed wedge block 3, and the sliding surface of each adjustment wedge block 22 is at an angle to its own movement direction. The first driving device 21 can drive the adjustment wedge block 22 to move, thereby changing the position of the guide disk 1.

[0026] The first driving devices 21 located at the upper left and upper right are preferably oil cylinders.

[0027] The first driving devices 21 located at the lower left and lower right include servo motors, lead screws, and nuts. The lead screws are drivingly connected to the output shafts of the servo motors. The lead screws and the nuts are in threaded connection. The nuts and the adjusting wedges 22 are fixedly connected. By driving the lead screws to rotate with the servo motors, the adjusting wedges 22 can move along the extending direction of the lead screws together with the nuts.

[0028] Embodiment 2

[0029] A friction welding machine according to this embodiment includes the rotating isolation mechanism 100 in Embodiment 1.

[0030] The position of the guide disk 1 on the tailstock assembly can be adjusted by each adjusting mechanism 2. The rotary positioning body for mounting the spindle workpiece on the spindle can partially extend into the guide disk 1 and contact the rollers. At the same time, the position of the guide disk 1 can be locked by the adjusting mechanism 2. The guide disk 1 plays a limiting role and can prevent the workpiece from shifting during the welding process.

[0031] Specific examples are used in the present invention to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A rotary isolation mechanism, characterized in that: Comprising: A guiding disc which is used to be movably arranged on the tailstock assembly, the tailstock assembly is used to mount a tailstock workpiece, a through hole is formed in the guiding disc, and a plurality of rollers are uniformly arranged along the circumferential direction of the through hole on the inner wall of the through hole. Part of the side walls of each roller can be in contact with the outer wall of the rotary positioning body at the same time, and the rotary positioning body is used to mount a spindle workpiece; And a plurality of adjusting mechanisms, each of the adjusting mechanisms is used to be fixedly arranged on the tailstock assembly, the plurality of adjusting mechanisms are distributed around the guiding disc, and the radial position of the guiding disc can be adjusted through the cooperation of each of the adjusting mechanisms so that the guiding disc is coaxial with the rotary positioning body, and the position of the guiding disc can be locked; Each of the adjusting mechanisms includes a first driving device and a first adjusting structure, the first driving device is in transmission connection with the first adjusting structure, a plurality of second adjusting structures are arranged on the guiding disc corresponding to the first adjusting structure, the first adjusting structure is driven to move by the first driving device, and the movement of the first adjusting structure can drive the second adjusting structure to move, so that the radial position of the guiding disc is changed, and the position of the guiding disc can be locked through the cooperation of each of the first adjusting structures and the second adjusting structures; The first adjusting structure is an adjusting wedge block fixedly connected to the output end of the first driving device, the second adjusting structure is a fixed wedge block distributed around the guiding disc, the sliding surfaces of each adjusting wedge block are attached to the sliding surfaces of one fixed wedge block arranged corresponding to it, the sliding surfaces of each adjusting wedge block are at an angle with their own movement directions, and the first driving device can drive the adjusting wedge block to move, so that the position of the guiding disc is changed.

2. The rotary isolation mechanism according to claim 1, wherein: The first driving device is an oil cylinder.

3. The rotary isolation mechanism according to claim 1, wherein: The first driving device includes a servo motor, a lead screw and a nut, the lead screw is in transmission connection with the output shaft of the servo motor, the lead screw is threadedly connected with the nut, and the nut is fixedly connected with the adjusting wedge block. By driving the lead screw to rotate by the servo motor, the adjusting wedge block can move along the extension direction of the lead screw together with the nut.

4. A friction welding machine, characterized in that: Comprising the rotary isolation mechanism according to any one of claims 1 to 3.

Images