Multi-blade friction welding stamping knife device capable of automatically replacing knife body

Abstract

The multi-blade friction welding stamping knife device comprises a stamping knife body frame, the stamping knife body frame comprises an upper knife body frame and a lower knife body frame, the lower knife body frame and the upper knife body frame are in central symmetry, the upper knife body frame and the lower knife body frame are combined into an annular structure, and an inner through hole of the annular structure is a stamping knife body mounting cavity. The upper cutter body frame comprises a rear execution part, and the left part and the right part of the rear execution part are in mirror symmetry. And the left half part of the rear execution part comprises a semi-cylindrical upper cutter body frame body, a first locking mounting cavity is formed in the left side wall of the upper cutter body frame body, and a first locking push block, a first spring and a first impulsive force lock cover are arranged in the first locking mounting cavity. The first locking push block comprises a first locking push block head, a stamping knife body is sleeved with the upper knife body frame body, and the first locking push block head can lock the stamping knife body; the spring and the thrust rod arranged on the stamping knife body frame in the device can realize the work of the locking push block, so that the locking and unlocking of the stamping knife body frame and the stamping knife body are realized.

Description

Technical Field

[0001] The invention belongs to the technical field of flexible production lines for drill pipes, relates to a punching tool, and particularly relates to a multi-wing friction welding punching tool device capable of automatically replacing a tool body. Background Art

[0002] The main goal of the flexible production line for drill pipes is to achieve intelligent and standardized production of each process of drill pipes, so as to greatly improve production efficiency, product quality and energy utilization rate. The friction welding unmanned workstation is an important automated device in the flexible production line for drill pipes, mainly used for the operation tasks of drill pipe friction welding, and can realize unmanned operation throughout the friction welding process. The punching tool device is a key component of the friction welding unmanned workstation, and its main function is to punch the outer flash generated during the friction welding of drill pipes. The friction welding unmanned workstation requires that the punching tool device has higher efficiency, better stability and more reliable use when punching the outer flash of drill pipes; in addition, in order to complete the punching tasks of outer flashes of drill pipes of various types, specifications and batches, the tool body in the punching tool device should be able to be automatically replaced during the friction welding operation, and the punched outer flash iron chips can be evenly and completely non-spraying, without manual cleaning, realizing unmanned operation throughout the process of punching the outer flash of friction welding.

[0003] The conventional punching tool device cannot meet the usage requirements of the friction welding unmanned workstation. First of all, after the cutting edge of the conventional punching tool device fails, the whole punching tool device needs to be replaced, resulting in waste of materials and increased production costs; secondly, part of the iron chips cut by the conventional punching tool device will return to the iron chip collection box, and part of them will splash out due to the influence of its own structure, getting stuck in the punching tool groove and the spring chuck. This not only affects the operation efficiency, but also has a certain impact on the operation of the equipment, and does not have stability and reliability. Moreover, the splashed iron chips need to be manually cleaned, which cannot meet the automation operation requirements of the unmanned workstation; thirdly, there is a situation where the flash cannot be punched off during the punching of the conventional punching tool device, which affects the punching processing efficiency and poses potential safety hazards during production, and is not suitable for automated production; finally, the conventional punching tool device is of an integral structure, and the tool body needs to be replaced manually, which cannot meet the automatic replacement requirements of the friction welding unmanned workstation. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a multi-wing friction welding punching tool device capable of automatically replacing a tool body, and solve the technical problem that the automation degree of the friction welding punching tool device in the existing technology needs to be further improved.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0006] A multi-blade friction welding punching tool device capable of automatically replacing the tool body, including a punching tool body frame. The punching tool body frame includes an upper tool body frame and a lower tool body frame. The structure of the lower tool body frame and the structure of the upper tool body frame are arranged in a centrosymmetric manner. The upper tool body frame and the lower tool body frame are combined together to form an annular structure. The inner through hole of the annular structure is a punching tool body installation cavity for coaxially sleeving the punching tool body.

[0007] The upper tool body frame includes a rear execution part. The rear execution part includes the left half part of the rear execution part and the right half part of the rear execution part. The structure of the left half part of the rear execution part and the structure of the right half part of the rear execution part are arranged in a mirror-symmetric manner.

[0008] The left half part of the rear execution part includes an upper tool body frame body that is semi-cylindrical with an open bottom and open at both the front and rear ends axially. A first locking installation cavity is transversely opened near the bottom on the left side wall of the upper tool body frame body. A first locking push block, a first spring, and a first impact lock cover are sequentially arranged in the first locking installation cavity from right to left.

[0009] The first locking push block includes a first locking push block head. An inner part of the upper tool body frame body also coaxially sleevs a punching tool body. The first locking push block head can pass through the inner side of the left side wall of the upper tool body frame body to lock the upper left part of the punching tool body. The first locking push block can also compress the first spring transversely from right to left.

[0010] The right half part of the rear execution part includes a second locking push block head, which can lock the upper right part of the punching tool body.

[0011] An upper electromagnet installation cavity is also opened on the middle side wall of the rear execution part. The bottom and the rear side of the upper electromagnet installation cavity are both open. An upper electromagnet is arranged in the upper electromagnet installation cavity, and the upper electromagnet can adsorb the punching tool body inside the upper tool body frame body.

[0012] The present invention also has the following technical features:

[0013] Preferably, the first impact lock cover is detachably installed in the first locking installation cavity, and the first impact lock cover can limit the axial direction of the first spring.

[0014] A first thrust rod installation cavity is also vertically opened on the left side wall of the upper tool body frame body. The vertical bottom of the first thrust rod installation cavity is communicated with the first locking installation cavity. A first thrust rod is installed in the first thrust rod installation cavity, and the first thrust rod can make the first locking push block head move leftward transversely and retract into the first locking installation cavity.

[0015] The right half part of the rear execution part also includes a second thrust rod, which can make the second locking push block head move rightward transversely.

[0016] Specifically, the first locking push block includes a first locking horizontal push block arranged horizontally. The right end of the first locking horizontal push block is a first locking push block head. At the top left end of the first locking horizontal push block, a first locking vertical push block is integrally and vertically arranged. On the right side of the top of the first locking vertical push block, a first locking push block inclined surface is provided. On the left side surface of the first locking vertical push block, a right end limit block of the first spring is provided, and the right end limit block of the first spring can be coaxially sleeved inside the right end of the first spring.

[0017] The first thrust rod includes a first thrust rod body. On the left side of the vertical bottom of the first thrust rod body, a first thrust rod inclined surface is provided, and the first thrust rod inclined surface can be attached to the first locking push block inclined surface. The vertical top of the first thrust rod body is the outer end of the first thrust rod, and the outer end of the first thrust rod can vertically extend to the outside of the upper tool body frame body.

[0018] On the right side surface of the first impact lock cover, a left end limit block of the first spring is provided, and the left end limit block of the first spring can be coaxially sleeved inside the left end of the first spring.

[0019] Specifically, the left half of the rear execution part of the lower tool body frame includes a third locking push block head, and the third locking push block head can lock the lower left part of the punching tool body; the left half of the lower tool body frame further includes a third thrust rod, and the third thrust rod can make the third locking push block head move horizontally to the left.

[0020] The right half of the rear execution part of the lower tool body frame includes a fourth locking push block head, and the fourth locking push block head can lock the lower right part of the punching tool body; the right half of the lower tool body frame further includes a fourth thrust rod, and the fourth thrust rod can make the fourth locking push block head move horizontally to the right.

[0021] Specifically, the upper tool body frame further includes a front fitting part, and the front fitting part is coaxially arranged in front of the longitudinal direction of the rear execution part, and the front fitting part is integrally formed with the rear execution part.

[0022] The front fitting part includes an upper tool body left edge fitting part and an upper tool body right edge fitting part, and the upper tool body left edge fitting part and the upper tool body right edge fitting part are arranged in sequence from left to right along the outer wall arc of the upper tool body frame body.

[0023] On the front end surface of the upper tool body left edge fitting part, a first fitting inclined surface inclined forward is arranged from right to left.

[0024] On the front end surface of the upper tool body right edge fitting part, a second fitting inclined surface inclined forward is arranged from right to left.

[0025] On the upper tool body frame body, a plurality of axially penetrating upper tool body frame mounting holes are also provided. The plurality of upper tool body frame mounting holes are uniformly arranged in the circumferential direction. The upper tool body frame mounting holes penetrate the first fitting inclined surface longitudinally forward, and also penetrate the second fitting inclined surface longitudinally forward. The upper tool body frame can be installed through the plurality of upper tool body frame mounting holes.

[0026] Specifically, the inner wall of the punching tool body installation cavity is divided into an upper tool body frame large-diameter surface and an upper tool body frame small-diameter surface longitudinally from front to back. A step surface of the upper tool body frame is provided at the connection between the upper tool body frame small-diameter surface and the upper tool body frame large-diameter surface.

[0027] An upper tool body frame left positioning surface and an upper tool body frame right positioning surface are provided on the upper tool body frame small-diameter surface.

[0028] Specifically, the punching tool body includes an upper tool body and a lower tool body. The structure of the lower tool body and the structure of the upper tool body are symmetrically installed on the punching tool body frame about the center.

[0029] The upper tool body includes an upper tool body installation part in the shape of a semi-cylindrical tube with an open bottom and both axially front and rear ends open. The front end face of the upper tool body installation part is integrally and sequentially provided with an upper tool body left cutting edge part and an upper tool body right cutting edge part. The upper tool body left cutting edge part and the upper tool body right cutting edge part are arranged in sequence along the inner wall arc of the upper tool body installation part from left to right.

[0030] On the front end face of the upper tool body left cutting edge part, an upper tool body left cutting edge inclined forward at 45° to 60° is provided from right to left.

[0031] On the front end face of the upper tool body right cutting edge part, an upper tool body right cutting edge inclined forward at 45° to 60° is provided from right to left.

[0032] The outer diameter of the upper tool body left cutting edge part is equal to the outer diameter of the upper tool body right cutting edge part, and the outer diameter of the upper tool body left cutting edge part is greater than the outer diameter of the upper tool body installation part.

[0033] Specifically, an upper tool body left locking hole penetrating the side wall transversely is also provided on the left side wall of the upper tool body installation part. The first locking push block head can lock the left side of the upper tool body through the upper tool body left locking hole.

[0034] An upper tool body right locking hole penetrating the side wall transversely is provided on the right side wall of the upper tool body installation part. The second locking push block head can lock the right side of the upper tool body through the upper tool body right locking hole.

[0035] Specifically, the upper tool body left cutting edge is aligned with the first fitting inclined surface, and the upper tool body right cutting edge is aligned with the second fitting inclined surface.

[0036] Specifically, the outer side walls of the left cutting edge portion and the right cutting edge portion of the upper tool body form a large-diameter surface of the upper tool body, and the large-diameter surface of the upper tool body is in contact with the large-diameter surface of the upper tool body holder.

[0037] The installation portion of the upper tool body is coaxially sleeved inside the body of the upper tool body holder. The outer side wall of the installation portion of the upper tool body is a small-diameter surface of the upper tool body, and the small-diameter surface of the upper tool body is in contact with the small-diameter surface of the upper tool body holder.

[0038] A stepped surface of the upper tool body is provided at the connection between the large-diameter surface and the small-diameter surface of the upper tool body, and the stepped surface of the upper tool body is in contact with the stepped surface of the upper tool body holder.

[0039] A left positioning surface of the upper tool body is provided on the small-diameter surface of the upper tool body, and the left positioning surface of the upper tool body is in contact with the left positioning surface of the upper tool body holder.

[0040] A right positioning surface of the upper tool body is provided on the small-diameter surface of the upper tool body, and the right positioning surface of the upper tool body is in contact with the right positioning surface of the upper tool body holder.

[0041] Compared with the prior art, the present invention has the following technical effects:

[0042] (Ⅰ) The device in the present invention has a modular structure and is composed of a punching tool body holder and a punching tool body. An electromagnet is provided on the punching tool body holder for adsorbing the punching tool body; a locking push block and a spring are also provided on the punching tool body holder for locking the punching tool body on the punching tool body holder. In contact with the locking push block is a thrust rod, which can realize the work of the locking push block, and further realize the locking and opening of the punching tool body holder and the punching tool body. The outer end of the thrust rod is connected to a thrust rod cylinder, thereby achieving the goal of automatic control. In this way, with the cooperation of the electromagnet, locking push block, spring, thrust rod on the punching tool body holder, as well as the external manipulator and thrust rod cylinder, the punching tool body can be automatically replaced, and further achieve the goal of full-process automation of the external flash punching in drill pipe friction welding, and enter the goal of meeting the automation work requirements of an unmanned workstation.

[0043] (Ⅱ) The punching tool body of the device in the present invention adopts a multi-edge design. Compared with the prior art, there is no longer a chip removal groove for the punching tool, which increases the number of punching action points, reduces the punching resistance and energy consumption; each punching tool edge adopts a gradient angle of 45° to 60° from the tip to the root, which not only ensures the sharpness of punching, improves the chip breaking ability, but also enhances the bending strength at the root. In this way, the external flash will no longer adhere to the drill pipe body during punching, and the cut iron chips are more uniform and complete, without the need for subsequent manual cleaning. The punching efficiency, reliability and safety of the punching tool device are guaranteed, and further achieve the goal of meeting the operation requirements of the friction welding unmanned workstation.

[0044] (Ⅲ) The device in the present invention is provided with a blade angle range suitable for punching the external flash of drill pipe friction welding, which improves the punching ability of the punch blade body for the external flash of drill pipe friction welding. A small blade angle will result in insufficient blade strength, easy chipping or wear, especially a short service life when punching high-hardness materials. However, a blade body with a blade angle greater than 60° may cause the blade to anneal and fail due to increased frictional heat generation. The blade angle in the present invention is set according to the material of the drill pipe, and the set angle range is within 45° - 60°. This makes the blade blunt and thick, improves the strength, enhances the impact resistance and wear resistance, and can also disperse stress during the punching operation to prevent the blade from breaking.

[0045] (Ⅳ) The device structure in the present invention is compact. The punch blade body holder and the punch blade body are of a modular split structure. When the punch blade body is worn out and fails to be used, only the punch blade body needs to be replaced. Compared with the conventional punch device, the production cost is greatly reduced. Brief Description of the Drawings

[0046] Figure 1 It is a schematic diagram of the overall structure of the device in the present invention.

[0047] Figure 2 It is a schematic sectional view of the punch blade body holder in the present invention.

[0048] Figure 3 It is a schematic diagram of the structure of the first locking push block in the present invention.

[0049] Figure 4 It is a schematic diagram of the structure of the first thrust rod in the present invention.

[0050] Figure 5 It is a schematic front view of the punch blade body holder in the present invention.

[0051] Figure 6 It is a schematic diagram of the structure of the punch blade body in the present invention.

[0052] Figure 7 It is a schematic rear view of the punch blade body in the present invention.

[0053] The meanings of the various reference numerals in the figure are as follows: 1 - punch blade body holder, 2 - punch blade body, 3 - punch blade body installation cavity.

[0054] 101 - upper blade body holder, 102 - lower blade body holder.

[0055] 201 - upper blade body, 202 - lower blade body.

[0056] 10101 - Upper tool body frame body, 10102 - First locking installation cavity, 10103 - First locking push block, 10104 - First spring, 10105 - First impact lock cover, 10106 - First thrust rod installation cavity, 10107 - First thrust rod, 10108 - Left end limit block of the first spring, 10109 - Upper electromagnet installation cavity, 10110 - Upper electromagnet, 10111 - Upper tool body frame installation hole, 10112 - Second locking push block head, 10113 - Second thrust rod, 10114 - First fitting inclined plane, 10115 - Second fitting inclined plane, 10116 - Large diameter surface of the upper tool body frame, 10117 - Small diameter surface of the upper tool body frame, 10118 - Step surface of the upper tool body frame, 10119 - Left side positioning surface of the upper tool body frame, 10120 - Right side positioning surface of the upper tool body frame, 10121 - Left blade fitting part of the upper tool body, 10122 - Right blade fitting part of the upper tool body.

[0057] 10201 - Third locking push block head, 10202 - Third thrust rod, 10203 - Fourth locking push block head, 10204 - Fourth thrust rod.

[0058] 20101 - Upper tool body installation part, 20102 - Left blade part of the upper tool body, 20103 - Right blade part of the upper tool body, 20104 - Left blade of the upper tool body, 20105 - Right blade of the upper tool body, 20106 - Large diameter surface of the upper tool body, 20107 - Small diameter surface of the upper tool body, 20108 - Step surface of the upper tool body, 20109 - Left lock hole of the upper tool body, 20110 - Right lock hole of the upper tool body, 20111 - Left side positioning surface of the upper tool body, 20112 - Right side positioning surface of the upper tool body.

[0059] 1010301 - First locking push block head, 1010302 - First locking horizontal push block, 1010303 - First locking vertical push block, 1010304 - First locking push block inclined plane, 1010305 - Right end limit block of the first spring.

[0060] 1010701 - First thrust rod body, 1010702 - First locking push block inclined plane, 1010703 - Outer end of the first thrust rod.

[0061] N - Separation boundary between the upper tool body frame 101 and the lower tool body frame 102, M - Separation boundary between the upper tool body 201 and the lower tool body 202.

[0062] The following further elaborates on the specific content of the present invention in conjunction with the attached drawings and embodiments. Specific embodiments

[0063] It should be noted that all the devices and components in the present invention, unless otherwise specified, are all the devices and components known in the prior art. For example, the robotic gripper adopts a known robotic gripper, the upper electromagnet adopts a known electromagnet, and the thrust rod adopts a known thrust rod.

[0064] In the present invention, the OXYZ coordinate system is a three-dimensional rectangular coordinate system. The X-axis is the horizontal direction, and its pointing direction is to the right; the Y-axis is the longitudinal direction, and its pointing direction is to the rear; the Z-axis is the vertical direction, and its pointing direction is upward.

[0065] In compliance with the above technical solution, the following provides specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0066] Embodiment:

[0067] This embodiment provides a multi-blade friction welding punching tool device capable of automatically replacing the tool body. As Figure 1 shown, it includes a punching tool body frame 1, and the punching tool body frame 1 includes an upper tool body frame 101 and a lower tool body frame 102. The structure of the lower tool body frame 102 and the structure of the upper tool body frame 101 are arranged in a centrosymmetric manner. The upper tool body frame 101 and the lower tool body frame 102 are combined together to form an annular structure, and the inner through hole of the annular structure is a punching tool body installation cavity 3 for coaxially sleeving the punching tool body 2.

[0068] As Figure 1 and Figure 2 shown, the upper tool body frame 101 includes a rear execution part, and the rear execution part includes the left half part and the right half part of the rear execution part. The structure of the left half part of the rear execution part and the structure of the right half part of the rear execution part are mirror-symmetrically arranged.

[0069] As Figure 2 shown, the left half part of the rear execution part includes an upper tool body frame body 10101 in the shape of a semi-cylindrical tube with an open bottom and both axial front and rear ends open. A first locking installation cavity 10102 is horizontally opened on the left side wall of the upper tool body frame body 10101 near the bottom. A first locking push block 10103, a first spring 10104, and a first impact lock cover 10105 are sequentially arranged in the first locking installation cavity 10102 from right to left.

[0070] As Figure 1 and Figure 2As shown, the first locking push block 10103 includes a first locking push block head 1010301. An impact knife body 2 is coaxially sleeved inside the upper knife body frame body 10101. The first locking push block head 1010301 can pass through the inner side of the left side wall of the upper knife body frame body 10101 to lock the upper left part of the impact knife body 2; the first locking push block 10103 can also compress the first spring 10104 from right to left along the horizontal direction.

[0071] As Figure 1 shown, the right half of the rear execution part includes a second locking push block head 10112, and the second locking push block head 10112 can lock the upper right part of the impact knife body 2.

[0072] As Figure 2 shown, an upper electromagnet installation cavity 10109 is also opened on the middle side wall of the rear execution part. The bottom and rear sides of the upper electromagnet installation cavity 10109 are both open; an upper electromagnet 10110 is arranged in the upper electromagnet installation cavity 10109, and the upper electromagnet 10110 can adsorb the impact knife body 2 inside the upper knife body frame body 10101.

[0073] In this embodiment, the upper knife body frame 101 and the lower knife body frame 102 are separated, and the separation boundary is N.

[0074] As a preferred solution of this embodiment, as Figure 1 and Figure 2 shown, the first impact force lock cover 10105 is detachably installed in the first locking installation cavity 10102, and the first impact force lock cover 10105 can limit the axial direction of the first spring 10104.

[0075] As Figure 2 shown, a first thrust rod installation cavity 10106 is also vertically opened on the left side wall of the upper knife body frame body 10101. The vertical bottom of the first thrust rod installation cavity 10106 is communicated with the first locking installation cavity 10102. A first thrust rod 10107 is installed in the first thrust rod installation cavity 10106, and the first thrust rod 10107 can make the first locking push block head 1010301 move leftward along the horizontal direction and retract into the first locking installation cavity 10102.

[0076] As Figure 1 and Figure 2 shown, the right half of the rear execution part also includes a second thrust rod 10113, and the second thrust rod 10113 can make the second locking push block head 10112 move rightward along the horizontal direction.

[0077] In this embodiment, the outer end of the second thrust rod 10113 is connected to a thrust rod cylinder, and the thrust rod cylinder uses a commonly known thrust rod cylinder in the art.

[0078] As a preferred solution of this embodiment, as Figure 3 shown, the first locking push block 10103 includes a first locking horizontal push block 1010302 arranged horizontally. The right end of the first locking horizontal push block 1010302 is the first locking push block head 1010301. At the top left end of the first locking horizontal push block 1010302, a first locking vertical push block 1010303 is integrally and vertically arranged. On the right side of the top of the first locking vertical push block 1010303, a first locking push block inclined surface 1010304 is arranged. On the left side surface of the first locking vertical push block 1010303, a right end limit block 1010305 of the first spring is arranged, and the right end limit block 1010305 of the first spring can be coaxially sleeved inside the right end of the first spring 10104.

[0079] As Figure 4 shown, the first thrust rod 10107 includes a first thrust rod body 1010701. On the left side of the vertical bottom of the first thrust rod body 1010701, a first thrust rod inclined surface 1010702 is arranged, and the first thrust rod inclined surface 1010702 can be attached to the first locking push block inclined surface 1010304. The vertical top of the first thrust rod body 1010701 is the outer end 1010703 of the first thrust rod, and the outer end 1010703 of the first thrust rod can vertically extend to the outside of the upper tool body frame 10101.

[0080] As Figure 2 shown, on the right side surface of the first impact lock cover 10105, a left end limit block 10108 of the first spring is arranged, and the left end limit block 10108 of the first spring can be coaxially sleeved inside the left end of the first spring 10104.

[0081] In this embodiment, the outer end 1010703 of the first thrust rod is connected to a thrust rod cylinder, and the thrust rod cylinder adopts a commonly known thrust rod cylinder in the art.

[0082] As a preferred solution of this embodiment, as Figure 1 and Figure 2 shown, the left half of the rear execution part of the lower tool body frame 102 includes a third locking push block head 10201, and the third locking push block head 10201 can lock the lower left part of the punching tool body 2; the left half of the lower tool body frame 102 further includes a third thrust rod 10202, and the third thrust rod 10202 can make the third locking push block head 10201 move horizontally to the left.

[0083] As Figure 1 and Figure 2As shown, the right half of the rear execution part of the lower tool body frame 102 includes a fourth locking push block head 10203, and the fourth locking push block head 10203 can lock the lower right side of the punching tool body 2; the right half of the lower tool body frame 102 further includes a fourth thrust rod 10204, and the fourth thrust rod 10204 can make the fourth locking push block head 10203 move horizontally to the right.

[0084] In this embodiment, the outer end of the third thrust rod 10202 is connected to a thrust rod cylinder, and the thrust rod cylinder is a commonly known thrust rod cylinder in the art.

[0085] In this embodiment, the outer end of the fourth thrust rod 10204 is connected to a thrust rod cylinder, and the thrust rod cylinder is a commonly known thrust rod cylinder in the art.

[0086] As a preferred solution of this embodiment, as Figure 1 shown, the upper tool body frame 101 further includes a front fitting part, the front fitting part is coaxially arranged on the longitudinal front of the rear execution part, and the front fitting part and the rear execution part are integrally formed.

[0087] As Figure 1 shown, the front fitting part includes an upper tool body left edge fitting part 10121 and an upper tool body right edge fitting part 10122, and the upper tool body left edge fitting part 10121 and the upper tool body right edge fitting part 10122 are arranged in sequence from left to right along the outer wall arc of the upper tool body frame body 10101.

[0088] As Figure 1 shown, the front end face of the upper tool body left edge fitting part 10121 is provided with a first fitting inclined surface 10114 that slopes forward from right to left.

[0089] As Figure 1 shown, the front end face of the upper tool body right edge fitting part 10122 is provided with a second fitting inclined surface 10115 that slopes forward from right to left.

[0090] As Figure 1 and Figure 2 shown, a plurality of axially penetrating upper tool body frame mounting holes 10111 are also formed on the upper tool body frame body 10101, the plurality of upper tool body frame mounting holes 10111 are uniformly arranged in the circumferential direction, the upper tool body frame mounting holes 10111 penetrate the first fitting inclined surface 10114 longitudinally forward, the upper tool body frame mounting holes 10111 also penetrate the second fitting inclined surface 10115 longitudinally forward, and the upper tool body frame 101 can be installed through the plurality of upper tool body frame mounting holes 10111.

[0091] In this embodiment, the first fitting inclined surface 10114 is provided with an angle of 55° that slopes forward from right to left.

[0092] In this embodiment, the second fitting inclined surface 10115 is provided with an angle of 55° inclined forward from right to left.

[0093] In this embodiment, the upper tool body holder 101 can be installed on the punch tool cylinder holder on the friction welding machine bed through a plurality of upper tool body holder mounting holes 10111; the lower tool body holder 102 can be installed on the punch tool cylinder holder on the friction welding machine bed through a plurality of lower tool body holder mounting holes. The punch tool cylinder holder on the friction welding machine bed is a commonly known punch tool cylinder holder on the friction welding machine bed in the art.

[0094] As a preferred solution of this embodiment, as Figure 5 shown, the inner wall of the punch tool body installation cavity 3 is divided into an upper tool body holder large diameter surface 10116 and an upper tool body holder small diameter surface 10117 longitudinally from front to back, and an upper tool body holder step surface 10118 is provided at the connection between the upper tool body holder small diameter surface 10117 and the upper tool body holder large diameter surface 10116.

[0095] As Figure 5 shown, an upper tool body holder left positioning surface 10119 and an upper tool body holder right positioning surface 10120 are provided on the upper tool body holder small diameter surface 10117.

[0096] As a preferred solution of this embodiment, as Figure 1 and Figure 6 shown, the punch tool body 2 includes an upper tool body 201 and a lower tool body 202, and the structure of the lower tool body 202 and the structure of the upper tool body 201 are symmetrically installed on the punch tool body holder 1 about the center.

[0097] As Figure 6 shown, the upper tool body 201 includes an upper tool body installation part 20101 that is semi-cylindrical with an open bottom and both axial front and rear ends open. The front end face of the upper tool body installation part 20101 is integrally and sequentially provided with an upper tool body left cutting edge part 20102 and an upper tool body right cutting edge part 20103, and the upper tool body left cutting edge part 20102 and the upper tool body right cutting edge part 20103 are arranged in sequence along the inner wall arc of the upper tool body installation part 20101 from left to right.

[0098] As Figure 6 shown, the front end face of the upper tool body left cutting edge part 20102 is provided with an upper tool body left cutting edge 20104 that is inclined forward 45° - 60° from right to left.

[0099] As Figure 6 shown, the front end face of the upper tool body right cutting edge part 20103 is provided with an upper tool body right cutting edge 20105 that is inclined forward 45° - 60° from right to left.

[0100] As Figure 7As shown, the outer diameters of the left cutting edge part 20102 of the upper tool body and the right cutting edge part 20103 of the upper tool body are equal, and the outer diameter of the left cutting edge part 20102 of the upper tool body is larger than the outer diameter of the mounting part 20101 of the upper tool body.

[0101] In this embodiment, the punching tool body 2 has a four-cutting-edge structure, and the upper tool body 201 and the lower tool body 202 are separated, and the separation boundary is M.

[0102] In this embodiment, the angle at which the left cutting edge 20104 of the upper tool body inclines forward is 55°.

[0103] In this embodiment, the angle at which the right cutting edge 20105 of the upper tool body inclines forward is 55°.

[0104] In this embodiment, according to the material of the drill pipe friction welding, a cutting edge angle range of 55° that matches the punching tool device is set. Such a setting enhances the punching ability of the punching tool device. The punching tool device no longer has a chip removal groove for the punching tool, and adopts a multi-cutting-edge structure, which increases the number of acting points for punching, reduces the punching resistance. In addition, the cutting edge of the punching tool adopts a gradually changing angle from the tip to the root, enhancing the chip breaking ability, so that the outer flash will no longer adhere to the drill pipe body during punching and is more easily punched off. The iron chips punched out are more complete, and the phenomenon of iron chips getting stuck in the collet no longer exists, ensuring the processing efficiency, reliability and safety of punching; the punching tool device is provided with a thrust rod, a locking push block and a spring that can automatically replace the punching tool body 2, and can replace the punching tool body 2 when the punching tool body 2 needs to be replaced, thus meeting the requirements of unmanned operation.

[0105] In this embodiment, the punching tool body 2 of the punching tool device adopts a multi-cutting-edge structure without grooves, and each cutting edge adopts a gradually changing angle from the tip to the root, improving the chip breaking ability and the bending strength at the root, reducing the punching resistance, lowering the power consumption, making the iron chips more complete, and improving the processing efficiency of punching and the reliability and safety of unmanned production.

[0106] In this embodiment, the punching tool body 2 is designed with multiple cutting edges, which reduces the punching resistance and ensures the processing efficiency, reliability, and safety of punching; the cutting edge angle of the punching tool body 2 is set at 45° to 60°, which belongs to a large cutting edge angle. Although the punching ability is improved, the contact area between the punching tool body 2 and the friction-welded external flash becomes larger, the punching resistance increases, a larger punching force is required, and the energy consumption increases. To maximize the advantages of the 45° to 60° cutting edge angle, the punching tool body of the punching device adopts a multi-cutting-edge structure and no longer sets a chip removal groove for the punching tool compared with the prior art. This increases the number of punching action points, reduces the punching resistance, and lowers the energy consumption; at the same time, each punching tool cutting edge adopts a gradually changing angle of 45° to 60° from the tip to the root. This not only ensures the sharpness of punching, improves the chip breaking ability, but also enhances the bending strength at the root. In this way, the external flash will no longer adhere to the drill pipe body during punching, and the cut iron chips are more uniform and complete, eliminating the need for subsequent manual cleaning. The efficiency, reliability, and safety of the punching device during punching are ensured, thus achieving the goal of meeting the operating requirements of the friction-welding unmanned workstation.

[0107] As a preferred solution of this embodiment, as Figure 1 and Figure 6 shown, a left locking hole 20109 for the upper tool body that penetrates the side wall horizontally is also provided on the left side wall of the upper tool body mounting portion 20101, and the first locking push block head 1010301 can lock the left side of the upper tool body 201 through the left locking hole 20109 for the upper tool body.

[0108] As Figure 1 and Figure 6 shown, a right locking hole 20110 for the upper tool body that penetrates the side wall horizontally is provided on the right side wall of the upper tool body mounting portion 20101, and the second locking push block head 10112 can lock the right side of the upper tool body 201 through the right locking hole 20110 for the upper tool body.

[0109] As a preferred solution of this embodiment, as Figure 1 shown, the left cutting edge 20104 of the upper tool body is aligned with the first fitting inclined surface 10114, and the right cutting edge 20105 of the upper tool body is aligned with the second fitting inclined surface 10115.

[0110] As a preferred solution of this embodiment, as Figure 6 and Figure 7 shown, the outer side walls of the left cutting edge portion 20102 of the upper tool body and the right cutting edge portion 20103 of the upper tool body form the large-diameter surface 20106 of the upper tool body, and the large-diameter surface 20106 of the upper tool body is in contact with the large-diameter surface 10116 of the upper tool body frame.

[0111] As Figure 1 and Figure 7As shown, the upper tool body mounting part 20101 is coaxially sleeved inside the upper tool body frame main body 10101. The outer side wall of the upper tool body mounting part 20101 is the small-diameter surface 20107 of the upper tool body, and the small-diameter surface 20107 of the upper tool body is in contact with the small-diameter surface 10117 of the upper tool body frame.

[0112] As Figure 7 shown, at the connection between the large-diameter surface 20106 and the small-diameter surface 20107 of the upper tool body, there is an upper tool body step surface 20108, and the upper tool body step surface 20108 is in contact with the upper tool body frame step surface 10118.

[0113] As Figure 7 shown, on the small-diameter surface 20107 of the upper tool body, there is a left positioning surface 20111 of the upper tool body, and the left positioning surface 20111 of the upper tool body is in contact with the left positioning surface 10119 of the upper tool body frame.

[0114] As Figure 7 shown, on the small-diameter surface 20107 of the upper tool body, there is a right positioning surface 20112 of the upper tool body, and the right positioning surface 20112 of the upper tool body is in contact with the right positioning surface 10120 of the upper tool body frame.

[0115] The usage method of the device in this embodiment specifically includes the following steps:

[0116] When installing the punching tool body 2:

[0117] Step 1, determine the specification of the punching tool body 2 according to the specification of the drill pipe to be produced, and the mechanical claw grabs the punching tool body 2 by means of internal support and electromagnetic adsorption.

[0118] Step 2, the thrust rod cylinder pushes the first thrust rod 10107. Through the interaction between the first thrust rod inclined surface 1010702 and the first locking push block inclined surface 1010304, the first locking push block head 1010301 of the first locking push block 10103 retracts horizontally to the left into the first locking installation cavity 10102 in the left half of the rear execution part of the upper tool body frame 101; similarly, under the push of the thrust rod cylinder, the second locking push block head 10112 retracts horizontally to the right into the locking installation cavity in the right half of the rear execution part of the upper tool body frame 101, the third locking push block head 10201 retracts horizontally to the left into the locking installation cavity in the left half of the rear execution part of the lower tool body frame 102, and the fourth locking push block head 10203 retracts horizontally to the right into the locking installation cavity in the right half of the rear execution part of the lower tool body frame 102; at the same time, the upper electromagnet 10110 and the electromagnet in the lower tool body frame 102 are powered off and lose magnetism.

[0119] Step 3: The robotic gripper picks up the punching tool body 2 and places it into the punching tool body holder 1. At this time, the large-diameter surface 10116 of the upper tool body holder fits with the large-diameter surface 20106 of the upper tool body, the stepped surface 10118 of the upper tool body holder fits with the stepped surface 20108 of the upper tool body, the small-diameter surface 10117 of the upper tool body holder fits with the small-diameter surface 20107 of the upper tool body, the left positioning surface 10119 of the upper tool body holder fits with the left positioning surface 20111 of the upper tool body, and the right positioning surface 10120 of the upper tool body holder fits with the right positioning surface 20112 of the upper tool body. Similarly, the large-diameter surface of the lower tool body holder 102 fits with the large-diameter surface of the lower tool body 202, the stepped surface of the lower tool body holder 102 fits with the stepped surface of the lower tool body 202, the small-diameter surface of the lower tool body holder 102 fits with the small-diameter surface of the lower tool body 202, the left positioning surface of the lower tool body holder 102 fits with the left positioning surface of the lower tool body 202, and the right positioning surface of the lower tool body holder 102 fits with the right positioning surface of the lower tool body 202.

[0120] Step 4: The upper electromagnet 10110 and the electromagnet in the lower tool body holder 102 are powered on. The punching tool body 2 is adsorbed by the magnet adsorption surface at the bottom of the upper electromagnet 10110 and the magnet adsorption surface at the top of the electromagnet in the lower tool body holder 102.

[0121] Step 5: The thrust rod cylinder no longer pushes the first thrust rod 10107. The first locking push block 10103 resets under the action of the rebounding force of the first spring 10104. The first locking push block head 1010301 extends into the left locking hole 20109 of the upper tool body, enabling the first locking push block head 1010301 to lock the left side of the upper tool body 201. Similarly, the second locking push block head 10112 can lock the right side of the upper tool body 201, the third locking push block head 10201 can lock the left side of the lower tool body 202, and the fourth locking push block head 10203 can lock the right side of the lower tool body 202. At this time, the punching tool body 2 is installed on the punching tool body holder 1, that is, the installation is completed.

[0122] When disassembling the punching tool body 2:

[0123] Step 1: The push rod cylinder pushes the first push rod 10107. Through the interaction between the first push rod inclined surface 1010702 and the first locking push block inclined surface 1010304, the first locking push block head 1010301 of the first locking push block 10103 retracts to the outside of the left locking hole 20109 of the upper tool body, that is, the first locking push block 10103 releases the locking of the left side of the upper tool body 201. Similarly, under the push of the push rod cylinder, the second locking push block head 10112 can release the locking of the right side of the upper tool body 201, the third locking push block head 10201 can release the locking of the left side of the lower tool body 202, and the fourth locking push block head 10203 can release the locking of the right side of the lower tool body 202. At the same time, the upper electromagnet 10110 and the electromagnet in the lower tool body holder 102 are powered off and lose magnetism.

[0124] Step 2: The robotic gripper grabs and pulls out the punching tool body 2 by magnetic adsorption, that is, the disassembly of the punching tool body 2 from the punching tool body holder 1 is completed.

Claims

1. A multi-blade friction welding punching tool device capable of automatically replacing the tool body, characterized in that It includes a punching tool body frame (1). The punching tool body frame (1) includes an upper tool body frame (101) and a lower tool body frame (102). The structure of the lower tool body frame (102) and the structure of the upper tool body frame (101) are arranged in a centrosymmetric manner. The upper tool body frame (101) and the lower tool body frame (102) are combined together to form an annular structure. The inner through hole of the annular structure is a punching tool body installation cavity (3) for coaxially sleeving a punching tool body (2). The upper tool body frame (101) includes a rear execution part. The rear execution part includes the left half of the rear execution part and the right half of the rear execution part. The structure of the left half of the rear execution part and the structure of the right half of the rear execution part are mirror-symmetrically arranged. The left half of the rear execution part includes an upper tool body frame body (10101) in the shape of a semi-cylindrical with an open bottom and both the front and rear ends axially open. A first locking installation cavity (10102) is transversely opened on the left side wall of the upper tool body frame body (10101) near the bottom. Inside the first locking installation cavity (10102), a first locking push block (10103), a first spring (10104), and a first impact lock cover (10105) are sequentially arranged from right to left. The first locking push block (10103) includes a first locking push block head (1010301). Inside the upper tool body frame body (10101), a punching tool body (2) is also coaxially sleeved. The first locking push block head (1010301) can pass through the inner side of the left side wall of the upper tool body frame body (10101) to lock the upper left part of the punching tool body (2). The first locking push block (10103) can also compress the first spring (10104) transversely from right to left. The right half of the rear execution part includes a second locking push block head (10112). The second locking push block head (10112) can lock the upper right part of the punching tool body (2). An upper electromagnet installation cavity (10109) is also opened on the middle side wall of the rear execution part. The bottom and the rear side of the upper electromagnet installation cavity (10109) are both open. An upper electromagnet (10110) is arranged inside the upper electromagnet installation cavity (10109). The upper electromagnet (10110) can adsorb the punching tool body (2) inside the upper tool body frame body (10101).

2. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 1, characterized in that, The first impact lock cover (10105) is detachably installed inside the first locking installation cavity (10102). The first impact lock cover (10105) can limit the axial direction of the first spring (10104). A first thrust rod installation cavity (10106) is also vertically opened on the left side wall of the upper tool body frame body (10101). The vertical bottom of the first thrust rod installation cavity (10106) is communicated with the first locking installation cavity (10102). A first thrust rod (10107) is installed inside the first thrust rod installation cavity (10106). The first thrust rod (10107) can make the first locking push block head (1010301) move transversely to the left and retract into the first locking installation cavity (10102). The right half of the post-execution part further includes a second thrust rod (10113), and the second thrust rod (10113) can move the second locking push block head (10112) horizontally to the right.

3. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 2, wherein The first locking push block (10103) includes a first locking horizontal push block (1010302) arranged horizontally. The right end of the first locking horizontal push block (1010302) is a first locking push block head (1010301). At the top left end of the first locking horizontal push block (1010302), a first locking vertical push block (1010303) is integrally and vertically arranged. On the right side of the top of the first locking vertical push block (1010303), a first locking push block inclined surface (1010304) is arranged. On the left side surface of the first locking vertical push block (1010303), a right end limit block (1010305) of the first spring is arranged, and the right end limit block (1010305) of the first spring can be coaxially sleeved inside the right end of the first spring (10104); The first thrust rod (10107) includes a first thrust rod body (1010701). On the left side of the vertical bottom of the first thrust rod body (1010701), a first thrust rod inclined surface (1010702) is arranged, and the first thrust rod inclined surface (1010702) can be attached to the first locking push block inclined surface (1010304). The vertical top of the first thrust rod body (1010701) is a first thrust rod outer end (1010703), and the first thrust rod outer end (1010703) can vertically extend to the outside of the upper tool body frame body (10101); On the right side surface of the first impact lock cover (10105), a left end limit block (10108) of the first spring is arranged, and the left end limit block (10108) of the first spring can be coaxially sleeved inside the left end of the first spring (10104).

4. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 1, characterized in that, The left half of the post-execution part of the lower tool body frame (102) includes a third locking push block head (10201), and the third locking push block head (10201) can lock the lower left side of the punching tool body (2); the left half of the lower tool body frame (102) further includes a third thrust rod (10202), and the third thrust rod (10202) can move the third locking push block head (10201) horizontally to the left; The right half of the post-execution part of the lower tool body frame (102) includes a fourth locking push block head (10203), and the fourth locking push block head (10203) can lock the lower right side of the punching tool body (2); the right half of the lower tool body frame (102) further includes a fourth thrust rod (10204), and the fourth thrust rod (10204) can move the fourth locking push block head (10203) horizontally to the right.

5. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 1, characterized in that, The upper tool body frame (101) further includes a front fitting part, and the front fitting part is coaxially arranged in front of the longitudinal direction of the post-execution part, and the front fitting part is integrally formed with the post-execution part; The front fitting portion includes an upper tool body left blade fitting portion (10121) and an upper tool body right blade fitting portion (10122). The upper tool body left blade fitting portion (10121) and the upper tool body right blade fitting portion (10122) are arranged in sequence from left to right along the outer wall arc of the upper tool body frame body (10101). The front end face of the upper tool body left blade fitting portion (10121) is provided with a first fitting inclined surface (10114) that slopes forward from right to left. The front end face of the upper tool body right blade fitting portion (10122) is provided with a second fitting inclined surface (10115) that slopes forward from right to left. The upper tool body frame body (10101) is further provided with a plurality of axially penetrating upper tool body frame mounting holes (10111). The plurality of upper tool body frame mounting holes (10111) are evenly arranged in the circumferential direction. The upper tool body frame mounting holes (10111) penetrate the first fitting inclined surface (10114) forward in the longitudinal direction, and the upper tool body frame mounting holes (10111) also penetrate the second fitting inclined surface (10115) forward in the longitudinal direction. The upper tool body frame (101) can be installed through the plurality of upper tool body frame mounting holes (10111).

6. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 5, characterized in that, The inner wall of the punching tool body installation cavity (3) is divided into an upper tool body frame large diameter surface (10116) and an upper tool body frame small diameter surface (10117) from front to back in the longitudinal direction. A upper tool body frame step surface (10118) is provided at the connection between the upper tool body frame small diameter surface (10117) and the upper tool body frame large diameter surface (10116). The upper tool body frame small diameter surface (10117) is provided with an upper tool body frame left positioning surface (10119) and an upper tool body frame right positioning surface (10120).

7. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 6, characterized in that, The punching tool body (2) includes an upper tool body (201) and a lower tool body (202). The structure of the lower tool body (202) and the structure of the upper tool body (201) are symmetrically installed on the punching tool body frame (1) with respect to the center. The upper tool body (201) includes an upper tool body installation portion (20101) in the shape of a semi-cylindrical tube with an open bottom and both axially front and rear ends open. The front end face of the upper tool body installation portion (20101) is integrally and sequentially provided with an upper tool body left blade portion (20102) and an upper tool body right blade portion (20103). The upper tool body left blade portion (20102) and the upper tool body right blade portion (20103) are arranged in sequence from left to right along the inner wall arc of the upper tool body installation portion (20101). The front end face of the upper tool body left blade portion (20102) is provided with an upper tool body left blade (20104) that slopes forward 45° - 60° from right to left. The front end face of the upper tool body right blade portion (20103) is provided with an upper tool body right blade (20105) that slopes forward 45° - 60° from right to left. The outer diameters of the upper tool body left blade portion (20102) and the upper tool body right blade portion (20103) are equal, and the outer diameter of the upper tool body left blade portion (20102) is greater than the outer diameter of the upper tool body installation portion (20101).

8. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 7, characterized in that, On the left side wall of the upper tool body mounting portion (20101), there is also an upper tool body left locking hole (20109) that penetrates the side wall horizontally. The first locking push block head (1010301) can lock the left side of the upper tool body (201) through the upper tool body left locking hole (20109); On the right side wall of the upper tool body mounting portion (20101), there is an upper tool body right locking hole (20110) that penetrates the side wall horizontally. The second locking push block head (10112) can lock the right side of the upper tool body (201) through the upper tool body right locking hole (20110).

9. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 7, characterized in that, The left cutting edge (20104) of the upper tool body is aligned with the first fitting inclined surface (10114), and the right cutting edge (20105) of the upper tool body is aligned with the second fitting inclined surface (10115).

10. The multi-blade friction welding punching tool device capable of automatically replacing the tool body according to claim 7, characterized in that, The outer side walls of the left cutting edge portion (20102) of the upper tool body and the right cutting edge portion (20103) of the upper tool body form the large-diameter surface (20106) of the upper tool body, and the large-diameter surface (20106) of the upper tool body is in contact with the large-diameter surface (10116) of the upper tool body holder; The upper tool body mounting portion (20101) is coaxially sleeved inside the upper tool body holder body (10101). The outer side wall of the upper tool body mounting portion (20101) is the small-diameter surface (20107) of the upper tool body, and the small-diameter surface (20107) of the upper tool body is in contact with the small-diameter surface (10117) of the upper tool body holder; At the connection of the large-diameter surface (20106) and the small-diameter surface (20107) of the upper tool body, there is an upper tool body step surface (20108), and the upper tool body step surface (20108) is in contact with the upper tool body holder step surface (10118); On the small-diameter surface (20107) of the upper tool body, there is an upper tool body left positioning surface (20111), and the upper tool body left positioning surface (20111) is in contact with the upper tool body holder left positioning surface (10119); On the small-diameter surface (20107) of the upper tool body, there is an upper tool body right positioning surface (20112), and the upper tool body right positioning surface (20112) is in contact with the upper tool body holder right positioning surface (10120).

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