Machine tool for machining large tubular workpiece

Abstract

The utility model discloses a machine tool for processing large tubular workpieces, which belongs to the technical field of processing machine tools and comprises a device base, a driven rotating frame is fixedly mounted on one side of an inner cavity of the device base, and a driving rotating frame is fixedly mounted on the other side of the inner cavity of the device base. Through the arrangement of the structure of an arc-shaped fixing plate, when an electric welding machine welds the outer wall of a pipeline workpiece, an electric push rod upwards drives the arc-shaped fixing plate to rise, and when a grinding wheel on the upper side of the arc-shaped fixing plate makes contact with the outer wall of the pipeline workpiece, the arc-shaped fixing plate is driven by an electric push rod to rotate; the polishing grinding wheel can be tightly attached to the outer wall of the pipeline workpiece, when the electric welding machine is used for welding a welding seam, the polishing grinding wheel rotates to synchronously polish the welding protrusion position of the outer wall of the pipeline workpiece, follow-up manual polishing treatment is not needed, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing machine tools, and more particularly to a machine tool for processing large tubular workpieces. Background Art

[0002] During the production of oil cylinders, the quality of the welds on the cylinder's outer wall directly impacts its performance and service life. Traditional welding methods often suffer from low welding efficiency, unstable welding quality, and high labor intensity. Therefore, a highly efficient, stable, and automated oil cylinder outer wall welding system is needed to meet production needs.

[0003] Since the cylinder weld is annular, it is difficult for workers to ensure the welding quality of the annular weld. When welding on the surface of the annular cylinder, bulges are likely to appear at the weld position. After welding, additional manual grinding is required, resulting in low production efficiency. Summary of the Invention

[0004] The purpose of the present utility model is to provide a machine tool for processing large tubular workpieces to solve the problems raised in the above background technology.

[0005] A machine tool for processing large tubular workpieces, comprising a device base, a driven rotating frame fixedly mounted on one side of an inner cavity of the device base, a driving rotating frame fixedly mounted on the other side of the inner cavity of the device base, three-jaw chucks rotatably mounted on the sides of the driven rotating frame and the driving rotating frame, a horizontal movable base fixedly mounted on the rear side of the device base, a horizontal motion mechanism provided on the upper end of the horizontal movable base, and an electric welding machine fixedly mounted on the front side of the horizontal motion mechanism;

[0006] A connecting plate is fixedly installed on the lower side of the electric welding machine, an electric push rod is fixedly installed on the upper front side of the connecting plate, an arc-shaped fixed plate is provided on the upper side of the electric push rod, the upper output end of the electric push rod is rotatably connected to the arc-shaped fixed plate through a rotating connecting piece, a number of grinding wheels are rotatably installed on the front and rear sides of the upper end of the arc-shaped fixed plate, and a rotating motor is fixedly installed on the front and rear sides of the arc-shaped fixed plate.

[0007] Furthermore, a rotation limiter is fixedly installed on the side of the three-jaw chuck, and the rotation limiter is an annular structure. The inner cavity sides of the active rotating frame of the driven rotating frame are both provided with an annular groove corresponding to the rotation limiter.

[0008] By adopting the above technical solution, the three-jaw chuck can rotate inside the driven rotating frame and the active rotating frame, thereby driving the internal pipe workpiece for welding, thereby facilitating the welding process.

[0009] Furthermore, a stabilizing support column is rotatably provided on the side of the inner cavity of the device base, which is located at the position of the driven rotating frame, and the side of the stabilizing support column is clamped and connected with the side of the three-jaw chuck.

[0010] By adopting the above technical solution, when the three-jaw chuck is rotating, the stabilizing support column can maintain the stability of the rotation of the three-jaw chuck.

[0011] Furthermore, a sliding groove corresponding to the horizontal motion mechanism is provided on the upper side of the horizontal movable base.

[0012] By adopting the above technical solution, the horizontal motion mechanism can move left and right within the range of the sliding groove, thereby driving the electric welding machine on the front side to move synchronously, so that the electric welding machine can weld the pipe workpiece.

[0013] Furthermore, a rectangular through slot is provided on the rear side of the inner cavity of the device base at the position of the connecting plate, and the connecting plate is an "L"-shaped stainless steel component.

[0014] By adopting the above technical solution, the connecting plate can move within the range of the rectangular through groove, so that the electric welding machine and the electric push rod always keep synchronous movement, which can facilitate the electric push rod to drive the arc fixing plate to rise to the side of the pipe workpiece.

[0015] Furthermore, the rotating motor can drive multiple grinding wheels on the same side to rotate synchronously.

[0016] By adopting the above technical solution, when the upper side of the grinding wheel is in close contact with the outer wall of the pipe workpiece, the rotating motor can drive the grinding wheel to rotate, thereby grinding the outer wall of the pipe workpiece and reducing the metal weld bulge at the welding point.

[0017] Furthermore, a servo motor is fixedly installed on the side of the device base at the position of the active rotating frame, and a rotating mounting plate is fixedly installed on the side of the three-jaw chuck close to the active rotating frame. The output end of the servo motor is fixedly connected to the rotating mounting plate by bolts.

[0018] By adopting the above technical solution, the servo motor can drive the three-jaw chuck to rotate by rotating the mounting plate, so that the pipe workpiece clamped and fixed by the three-jaw chuck side can be rotated, which facilitates the welding processing of the pipe workpiece.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] In the utility model, a structure with an arc-shaped fixing plate is provided. When the electric welding machine welds the outer wall of the pipe workpiece, the electric push rod drives the arc-shaped fixing plate upward to rise. When the grinding wheel on the upper side of the arc-shaped fixing plate contacts the outer wall of the pipe workpiece, the grinding wheel will stick to the outer wall of the pipe workpiece. When the electric welding machine welds the weld, the rotation of the grinding wheel will synchronously grind the welding protrusion position of the outer wall of the pipe workpiece, and no subsequent manual grinding process is required, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 A schematic diagram of the position of the horizontal movable base of the present invention;

[0023] Figure 3 This is a schematic structural diagram of the electric push rod of the utility model;

[0024] Figure 4 This is a cross-sectional view of the structure of the active rotating frame of the present utility model;

[0025] Figure 5 This is a structural diagram of the connecting plate of the present invention.

[0026] Explanation of the numbers in the figure: 1. Device base; 2. Driven rotating frame; 3. Three-jaw chuck; 4. Electric welding machine; 5. Pipe workpiece; 6. Electric push rod; 7. Active rotating frame; 8. Horizontal motion mechanism; 9. Horizontal moving base; 10. Sliding groove; 11. Rotation limiter; 12. Grinding wheel; 13. Rotating motor; 14. Arc fixing plate; 15. Connecting plate; 16. Stable support column; 17. Rotating mounting plate; 18. Servo motor; 19. Rotating connecting piece. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1 - Figure 5As shown, the embodiment of the utility model provides: comprising a device base 1, a driven rotating frame 2 is fixedly mounted on one side of the inner cavity of the device base 1, an active rotating frame 7 is fixedly mounted on the other side of the inner cavity of the device base 1, and a three-jaw chuck 3 is rotatably mounted on the sides of the driven rotating frame 2 and the active rotating frame 7, a horizontal movable base 9 is fixedly mounted on the rear side of the device base 1, a horizontal motion mechanism 8 is provided on the upper end of the horizontal movable base 9, and an electric welding machine 4 is fixedly mounted on the front side of the horizontal motion mechanism 8;

[0029] A connecting plate 15 is fixedly installed on the lower side of the electric welding machine 4, an electric push rod 6 is fixedly installed on the front upper side of the connecting plate 15, an arc-shaped fixed plate 14 is provided on the upper side of the electric push rod 6, the upper output end of the electric push rod 6 is rotatably connected to the arc-shaped fixed plate 14 through a rotating connector 19, a plurality of grinding wheels 12 are rotatably installed on the front and rear sides of the upper end of the arc-shaped fixed plate 14, and a rotating motor 13 is fixedly installed on the front and rear sides of the arc-shaped fixed plate 14;

[0030] A rotation limiter 11 is fixedly installed on the side of the three-jaw chuck 3. The rotation limiter 11 is an annular structure. The inner cavity sides of the driven rotating frame 2 and the active rotating frame 7 are both provided with an annular groove corresponding to the rotation limiter 11. The three-jaw chuck 3 can rotate inside the driven rotating frame 2 and the active rotating frame 7, thereby driving the internal pipe workpiece 5 for welding, thereby facilitating welding processing;

[0031] The side of the inner cavity of the device base 1 is located at the position of the driven rotating frame 2 and is rotatably provided with a stabilizing support column 16. The side of the stabilizing support column 16 is clamped and connected with the side of the three-jaw chuck 3. When the three-jaw chuck 3 is rotating, the stabilizing support column 16 can keep the three-jaw chuck 3 stable in rotation.

[0032] A sliding groove 10 corresponding to the horizontal motion mechanism 8 is provided on the upper side of the horizontal movable base 9. The horizontal motion mechanism 8 can move left and right within the range of the sliding groove 10, thereby driving the electric welding machine 4 on the front side to move synchronously, so that the electric welding machine 4 welds the pipe workpiece 5;

[0033] A rectangular through slot is provided on the rear side of the inner cavity of the device base 1 at the position of the connecting plate 15. The connecting plate 15 is an "L"-shaped stainless steel component. The connecting plate 15 can move within the range of the rectangular through slot, so that the electric welding machine 4 and the electric push rod 6 always maintain synchronous movement, which can facilitate the electric push rod 6 to drive the arc-shaped fixing plate 14 to rise to the side of the pipe workpiece 5;

[0034] The rotating motor 13 can drive the multiple grinding wheels 12 on the same side to rotate synchronously. When the upper side of the grinding wheel 12 is in close contact with the outer wall of the pipe workpiece 5, the rotating motor 13 can drive the grinding wheel 12 to rotate, thereby grinding the outer wall of the pipe workpiece 5 and reducing the metal weld bulge at the welding point;

[0035] A servo motor 18 is fixedly installed on the side of the device base 1 at the position of the active rotating frame 7, and a rotating mounting plate 17 is fixedly installed on the side of the three-jaw chuck 3 close to the active rotating frame 7. The output end of the servo motor 18 is fixedly connected to the rotating mounting plate 17 by bolts. The servo motor 18 can drive the three-jaw chuck 3 to rotate through the rotating mounting plate 17, thereby rotating the pipe workpiece 5 clamped and fixed on the side of the three-jaw chuck 3, making it convenient for the welding processing of the pipe workpiece 5.

[0036] The working principle of the utility model is as follows: the pipe workpiece 5 to be welded is set between the three-jaw chucks 3 on both sides, the three-jaw chucks 3 are respectively arranged inside the active rotating frame 7 and the driven rotating frame 2 through the rotation limiter 11, the servo motor 18 can drive the three-jaw chuck 3 to rotate by rotating the mounting plate 17, thereby synchronously rotating the pipe workpiece 5, and the horizontal motion mechanism 8 on the upper side of the horizontal moving base 9 drives the electric welding machine 4 to move horizontally to the position where welding is required, and the electric welding machine 4 welds the position on the outside of the pipe workpiece 5 that needs to be welded. When the electric welding machine 4 moves horizontally, the electric welding machine 4 drives the electric pusher 4 through the connecting plate 15 The rod 6 moves synchronously to the welding position, and the output end of the electric push rod 6 drives the arc-shaped fixed plate 14 to rise. At this time, the grinding wheel 12 contacts the outer wall of the pipe workpiece 5. The arc-shaped fixed plate 14 and the upper output end of the electric push rod 6 are rotatably connected through the rotating connector 19. Therefore, the arc-shaped fixed plate 14 will rotate to make the grinding wheel 12 fit the pipe workpiece 5. When the pipe workpiece 5 is rotationally welded, the weld will move to the position of the grinding wheel 12 as the pipe workpiece 5 rotates. The rotating motor 13 drives the grinding wheel 12 to rotate, which can grind the protrusions at the weld position smooth, and no subsequent manual grinding is required, thereby improving production efficiency.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention.

Claims

1. A machine tool for machining large tubular workpieces, comprising a device base (1), characterized in that: A driven rotating frame (2) is fixedly mounted on one side of the inner cavity of the device base (1), and an active rotating frame (7) is fixedly mounted on the other side of the inner cavity of the device base (1). A three-jaw chuck (3) is rotatably mounted on the sides of the driven rotating frame (2) and the active rotating frame (7). A horizontal movable base (9) is fixedly mounted on the rear side of the device base (1), and a horizontal motion mechanism (8) is provided on the upper end of the horizontal movable base (9). An electric welding machine (4) is fixedly mounted on the front side of the horizontal motion mechanism (8); A connecting plate (15) is fixedly installed on the lower side of the electric welding machine (4), an electric push rod (6) is fixedly installed on the upper front side of the connecting plate (15), an arc-shaped fixed plate (14) is provided on the upper side of the electric push rod (6), an upper output end of the electric push rod (6) is rotatably connected to the arc-shaped fixed plate (14) through a rotating connecting member (19), a plurality of grinding wheels (12) are rotatably installed on the front and rear sides of the upper end of the arc-shaped fixed plate (14), and a rotating motor (13) is fixedly installed on the front and rear sides of the arc-shaped fixed plate (14).

2. A machine tool for processing large tubular workpieces according to claim 1, characterized in that: A rotation limiter (11) is fixedly mounted on the side of the three-jaw chuck (3), and the rotation limiter (11) is an annular structure. The inner cavity sides of the active rotation frame (7) of the driven rotation frame (2) are both provided with an annular groove corresponding to the rotation limiter (11).

3. The machine tool for processing large tubular workpieces according to claim 1, characterized in that: A stabilizing support column (16) is rotatably provided on the inner cavity side of the device base (1) at the position of the driven rotating frame (2), and the side of the stabilizing support column (16) is clamped and connected to the side of the three-jaw chuck (3).

4. The machine tool for processing large tubular workpieces according to claim 1, characterized in that: A sliding groove (10) corresponding to the horizontal motion mechanism (8) is provided on the upper side of the horizontal movable base (9).

5. The machine tool for processing large tubular workpieces according to claim 1, characterized in that: A rectangular through slot is provided on the rear side of the inner cavity of the device base (1) at the position of the connecting plate (15), and the connecting plate (15) is an "L"-shaped stainless steel component.

6. The machine tool for processing large tubular workpieces according to claim 1, characterized in that: The rotating motor (13) can drive multiple grinding wheels (12) on the same side to rotate synchronously.

7. The machine tool for processing large tubular workpieces according to claim 1, characterized in that: A servo motor (18) is fixedly mounted on the side of the device base (1) at the position of the active rotating frame (7), and a rotating mounting plate (17) is fixedly mounted on the side of the three-jaw chuck (3) close to the active rotating frame (7). The output end of the servo motor (18) is fixedly connected to the rotating mounting plate (17) by bolts.

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