A plasma intersecting wire cutting device

Abstract

The present invention provides a plasma intersecting line cutting device, comprising a clamping mechanism for fixing a workpiece, a cutter, and a motion mechanism for driving the cutter to move on the workpiece surface in an intersecting line trajectory, the clamping mechanism comprising a symmetrically arranged left clamping seat and a right clamping seat and an adjustment component for adjusting the distance between the left clamping seat and the right clamping seat, a left positioning notch is provided on the side of the left clamping seat close to the right clamping seat, a right positioning notch is provided on the side of the right clamping seat close to the left clamping seat, and the left positioning notch and the right positioning notch are combined to form a rhombus-shaped notch for positioning and installing the workpiece. The present invention positions and clamps the workpiece through a positioning mechanism, the left clamping seat and the right clamping seat are symmetrically arranged, and the workpiece is fixed between the left clamping seat and the right clamping seat by symmetrically providing a triangular left positioning notch and a right positioning notch on the left clamping seat and the right clamping seat, thereby ensuring the centering installation of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, and in particular to a plasma intersecting wire cutting device. Background Art

[0002] There are a large number of steel pipe intersecting connection structures in pipeline oil, gas, water transportation projects, offshore oil production platforms, large frame platforms, roof trusses, bridges and other spatial steel structures in the construction of rivers, lakes and seas. The construction quality of these spatial truss structures depends on the welding quality of the intersecting lines between the connecting pipes, and the key to ensuring the welding quality lies in the cutting quality of the intersecting lines of pipes and their welding grooves. Therefore, the shape of the intersecting lines of pipes and the corresponding welding grooves are the key to affecting the quality of the project. At present, there are two forms of cutting the intersecting lines of pipes, namely manual cutting and CNC cutting. The intersecting lines of pipes are not only complex in shape, but also the welding groove angles on them vary with the position of the intersecting lines. Manual cutting is inefficient, but most CNC cutting machines are bulky and expensive, making them difficult to use on smaller construction sites. In addition, the movement is complex, often requiring 4 to 5 degrees of freedom, the control accuracy is not high, and the operation requirements are high, which makes it difficult for ordinary operators to operate. Summary of the invention

[0003] The purpose of the present invention is to address the above deficiencies and provide a plasma intersecting line cutting device which has a simple structure, is easy to use and can quickly process intersecting lines on a workpiece.

[0004] The solution adopted by the present invention to solve the technical problem is: a plasma intersecting line cutting device, including a clamping mechanism for fixing a workpiece, a cutter and a motion mechanism for driving the cutter to move on the workpiece surface along an intersecting line trajectory, the clamping mechanism including a symmetrically arranged left clamping seat and a right clamping seat and an adjustment component for adjusting the distance between the left clamping seat and the right clamping seat, a left positioning notch is provided on the side surface of the left clamping seat close to the right clamping seat, and a right positioning notch is provided on the side surface of the right clamping seat close to the left clamping seat, the left positioning notch and the right positioning notch are combined to form a diamond-shaped notch for positioning and installing the workpiece.

[0005] Furthermore, in order to realize the rotatable cutter so as to cut the intersection line on the workpiece in a circular trajectory; the motion mechanism includes a rotary shaft and a rotary frame, the rotary shaft is rotatably mounted above the workpiece through a centering mounting frame and the rotary shaft is radially perpendicular to the workpiece, the rotary frame is arranged at the lower end of the rotary shaft and the rotary frame is perpendicular to the rotary shaft, and the cutter is mounted on the rotary frame so that the cutter rotates with the rotary shaft as the rotation center to process the intersection line on the workpiece.

[0006] Furthermore, in order to ensure that the rotating axis is always radially perpendicular to the workpiece so that the cutter can process an intersection line on the workpiece when it rotates with the rotating axis as the rotation center; the centering mounting frame includes two symmetrically arranged Z-shaped left mounting rods and right mounting rods, the lower end of the left mounting rod is rotatably mounted on the left clamping seat, the lower end of the right mounting rod is rotatably mounted on the right clamping seat, and the upper end of the left mounting rod is rotatably connected to the upper end of the right mounting rod.

[0007] Furthermore, in order to rotatably connect the upper ends of the left mounting rod and the right mounting rod, and rotatably install the rotating shaft on the left mounting rod and the right mounting rod, the left mounting rod and the right mounting rod are positioned to ensure that the rotating shaft is always radially perpendicular to the workpiece; the upper ends of the left mounting rod and the right mounting rod are rotatably connected via a rotating guide sleeve, and the upper ends of the left mounting rod and the right mounting rod are both provided with rotating holes, the rotating guide sleeves are rotatably installed in the rotating holes, a rotating hole is provided in the rotating guide sleeves, and the rotating shaft is movably penetrated through the rotating hole.

[0008] Furthermore, in order to enable the rotating shaft to move up and down to ensure that the distance between the cutter and the workpiece surface remains unchanged during rotation; a first handwheel for rotating the rotating shaft is provided at the upper end of the rotating shaft, and a reset spring for resetting the rotating shaft upward is provided on the rotating shaft, and the reset spring is located between the first handwheel and the rotating guide sleeve.

[0009] Furthermore, in order to achieve the adjustable rotation radius of the cutter so as to adjust the rotation radius according to the size of the processing intersection line; the rotating frame can be installed at the lower end of the rotating shaft so as to slide the rotating frame radially relative to the rotating shaft to adjust the rotation radius of the cutter as needed.

[0010] Furthermore, in order to slidingly connect the rotating shaft and the rotating frame to realize the adjustable rotation radius of the cutter; the rotating frame is provided with a dovetail groove extending along the length direction of the rotating frame, the lower end of the rotating shaft is provided with a dovetail slider, the dovetail slider is slidably installed in the dovetail groove, one end of the rotating frame is provided with a fixed seat, and the cutter is fixed on the fixed seat.

[0011] Furthermore, in order to ensure that the cut intersection line is a circle in the horizontal projection, that is, it is necessary to keep the distance between the cutter and the workpiece surface unchanged, therefore, during cutting, the rotary shaft must be pressed down while rotating, in order to limit the downward distance of the rotary shaft; a limit rod is fixedly installed on the fixed seat and the limit rod is arranged parallel to the side of the cutter, the horizontal plane where the lower end of the limit rod is located is lower than the horizontal plane where the lower end of the cutter is located and the lower end of the limit rod is always in contact with the workpiece surface to keep the distance between the cutter and the workpiece unchanged.

[0012] Furthermore, in order to guide the relative movement of the left clamping seat and the right clamping seat to ensure that the left clamping seat and the right clamping seat can slide stably to accurately clamp the workpiece when they move toward each other; a left bearing seat is provided on the upper side of the left clamping seat, and a right bearing seat is provided on the upper side of the right clamping seat, and two guide rods are provided between the left bearing seat and the right bearing seat, and the right end of the guide rod is fixedly connected to the right bearing seat, and the left bearing seat is slidably connected to the guide rod.

[0013] Furthermore, in order to drive the right clamping seat along the guide rod to approach or move away from the left clamping seat to achieve clamping or loosening the workpiece; the adjusting assembly includes an adjusting screw and a second hand wheel arranged at one end of the adjusting screw, the other end of the adjusting screw is rotatably mounted on the left bearing seat, and the adjusting screw is threadedly connected to the right bearing seat so that when the second hand wheel is rotated, the right clamping seat is driven along the guide rod to approach or move away from the left clamping seat to achieve clamping or loosening the workpiece.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] (1) The present invention positions and clamps the workpiece through a positioning mechanism, and the left clamping seat and the right clamping seat are symmetrically arranged. The workpiece is fixed between the left clamping seat and the right clamping seat by symmetrically opening a triangular left positioning notch and a right positioning notch on the left clamping seat and the right clamping seat, thereby ensuring the centering installation of the workpiece, preventing the workpiece from swinging, and ensuring the stable clamping of the workpiece. The left clamping seat and the right clamping seat are driven to move relative to each other by an adjusting screw, and the setting of the guide rod can guide the right clamping seat, which is easy to operate;

[0016] (2) The present invention symmetrically arranges a left mounting rod and a right mounting rod on the left clamping seat and the right clamping seat, wherein the upper ends of the left mounting rod and the right mounting rod are rotatably connected, and the lower ends are rotatably mounted on the left clamping seat and the right clamping seat respectively. When the left clamping seat and the right clamping seat move relatively, the connection point of the upper ends of the left mounting rod and the right mounting rod is always located in the middle of the left clamping seat and the right clamping seat. By installing the rotating shaft on the connection point, it can be ensured that the rotating shaft is always located in the middle of the left clamping seat and the right clamping seat. When the workpiece is clamped between the left clamping seat and the right clamping seat, the rotating shaft will be perpendicular to the radial direction of the workpiece, thereby ensuring that the rotation center of the cutter is on the midline point of the workpiece;

[0017] (3) The present invention rotatably mounts a rotary shaft on a left mounting rod and a right mounting rod, and the rotary shaft can rotate to drive the cutter to rotate and draw a circle on the workpiece, and the rotary shaft can move up and down. When rotating to cut the intersection line, the rotary shaft is pressed down synchronously. The setting of the limit rod can ensure that the distance between the cutter and the surface of the workpiece remains unchanged at all times to ensure that the intersection line is accurately cut, and the cutter is slidably mounted on the rotating frame so that the rotation radius of the cutter can be adjusted as needed to cut intersection lines of various sizes and expand the cutting range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings in conjunction with embodiments:

[0019] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 is a side view of the present invention;

[0022] Figure 4 The structure of the present invention is schematically shown Figure 2 .

[0023] In the figure: 1-first hand wheel; 2-reset spring; 3-rotating shaft; 4-left mounting rod; 5-rotating frame; 501-dovetail groove; 6-fixed seat; 7-workpiece; 8-rotating guide sleeve; 9-right mounting rod; 10-cutter; 11-left bearing seat; 12-guide rod; 13-left clamping seat; 1301-left positioning notch; 14-right clamping seat; 1401-right positioning notch; 15-right bearing seat; 16-second hand wheel; 17-adjusting screw; 18-limiting rod. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0025] Example: Figure 1-4 As shown, a plasma intersecting line cutting device includes a clamping mechanism for fixing a workpiece 7, a cutter 10 and a motion mechanism for driving the cutter 10 to move on the surface of the workpiece 7 along an intersecting line trajectory, the cutter 10 is a plasma cutter, the clamping mechanism includes a symmetrically arranged left clamping seat 13 and a right clamping seat 14 and an adjustment component for adjusting the distance between the left clamping seat 13 and the right clamping seat 14, a left positioning notch 1301 is provided on the side surface of the left clamping seat 13 close to the right clamping seat 14, and a right positioning notch 1401 is provided on the side surface of the right clamping seat 14 close to the left clamping seat 13, and the left positioning notch 1301 and the right positioning notch 1401 are combined to form a rhombus-shaped notch for positioning and installing the workpiece 7.

[0026] In this embodiment, in order to realize the rotatable cutter 10 so as to cut the intersection line on the workpiece 7 in a circular trajectory; the motion mechanism includes a rotating shaft 3 and a rotating frame 5, the rotating shaft 3 is rotatably installed above the workpiece 7 through a centering mounting frame and the rotating shaft 3 is radially perpendicular to the workpiece 7, the rotating frame 5 is arranged at the lower end of the rotating shaft 3 and the rotating frame 5 is perpendicular to the rotating shaft 3, and the cutter 10 is installed on the rotating frame 5 so that the cutter 10 rotates with the rotating shaft 3 as the rotation center to process the intersection line on the workpiece 7.

[0027] In this embodiment, in order to ensure that the rotating axis 3 is always radially or normally perpendicular to the workpiece 7, so that the cutter 10 can process an intersection line on the workpiece 7 when it rotates with the rotating axis 3 as the rotation center; the centering mounting frame includes two symmetrically arranged Z-shaped left mounting rods 4 and right mounting rods 9, the lower end of the left mounting rod 4 is rotatably mounted on the left clamping seat 13, the lower end of the right mounting rod 9 is rotatably mounted on the right clamping seat 14, and the upper end of the left mounting rod 4 is rotatably connected to the upper end of the right mounting rod 9.

[0028] In this embodiment, in order to rotatably connect the upper ends of the left mounting rod 4 and the right mounting rod 9, and rotatably install the rotating shaft 3 on the left mounting rod 4 and the right mounting rod 9, the left mounting rod 4 and the right mounting rod 9 are positioned to ensure that the rotating shaft 3 is always radially perpendicular to the workpiece 7; the upper end of the left mounting rod 4 and the upper end of the right mounting rod 9 are rotatably connected through a rotating guide sleeve 8, and the upper ends of the left mounting rod 4 and the right mounting rod 9 are both provided with rotating holes, and the rotating guide sleeve 8 is rotatably installed in the rotating hole, and a rotating hole is provided in the rotating guide sleeve 8, and the rotating shaft 3 is movably penetrated into the rotating hole.

[0029] In this embodiment, in order to realize the up and down movement of the rotating shaft 3 to ensure that the distance between the cutter 10 and the surface of the workpiece 7 remains unchanged during rotation; a first hand wheel 1 for rotating the rotating shaft 3 is provided at the upper end of the rotating shaft 3, and a reset spring 2 for resetting the rotating shaft 3 upward is provided on the rotating shaft 3, and the reset spring 2 is located between the first hand wheel 1 and the rotating guide sleeve 8.

[0030] In this embodiment, in order to achieve the adjustable rotation radius of the cutter 10 so as to adjust the rotation radius according to the size of the processing intersection line; the rotating frame 5 can be installed at the lower end of the rotating shaft 3 so as to slide the rotating frame 5 radially relative to the rotating shaft 3 so as to adjust the rotation radius of the cutter 10 as needed.

[0031] In this embodiment, in order to slidingly connect the rotating shaft 3 with the rotating frame 5 to realize the adjustable rotation radius of the cutter 10; the rotating frame 5 is provided with a dovetail groove 501 extending along the length direction of the rotating frame 5, and the lower end of the rotating shaft 3 is provided with a dovetail slider, and the dovetail slider is slidably installed in the dovetail groove 501, and one end of the rotating frame 5 is provided with a fixed seat 6, and the cutter 10 is fixed on the fixed seat 6.

[0032] In this embodiment, in order to ensure that the cut intersection line is a circle in horizontal projection, that is, it is necessary to keep the distance between the cutter 10 and the surface of the workpiece 7 unchanged, so when cutting, the rotary shaft 3 is rotated and the rotary shaft 3 is pressed down at the same time, in order to limit the downward pressing distance of the rotary shaft 3; a limit rod 18 is fixedly installed on the fixed seat 6 and the limit rod 18 is parallel to the side of the cutter 10, the horizontal plane where the lower end of the limit rod 18 is located is lower than the horizontal plane where the lower end of the cutter 10 is located, and the lower end of the limit rod 18 is always in contact with the surface of the workpiece 7 to keep the distance between the cutter 10 and the workpiece 7 unchanged.

[0033] In this embodiment, in order to guide the relative movement of the left clamping seat 13 and the right clamping seat 14, so as to ensure that the left clamping seat 13 and the right clamping seat 14 can slide stably to accurately clamp the workpiece 7 when they move toward each other; a left bearing seat 11 is provided on the upper side of the left clamping seat 13, and a right bearing seat 15 is provided on the upper side of the right clamping seat 14, and two guide rods 12 are provided between the left bearing seat 11 and the right bearing seat 15, and the right end of the guide rod 12 is fixedly connected to the right bearing seat 15, and the left bearing seat 11 is slidably connected to the guide rod 12.

[0034] In this embodiment, in order to drive the right clamping seat 14 to move closer to or away from the left clamping seat 13 along the guide rod 12 to achieve clamping or loosening the workpiece 7; the adjusting assembly includes an adjusting screw 17 and a second hand wheel 16 arranged at one end of the adjusting screw 17, the other end of the adjusting screw 17 is rotatably mounted on the left bearing seat 11, and the adjusting screw 17 is threadedly connected to the right bearing seat 15 so that when the second hand wheel 16 is rotated, the right clamping seat 14 is driven along the guide rod 12 to move closer to or away from the left clamping seat 13 to achieve clamping or loosening the workpiece 7.

[0035] Specific implementation process: When in use, place the workpiece 7 between the left clamping seat 13 and the right clamping seat 14, rotate the adjusting screw 17, because the adjusting screw 17 is rotatably connected to the left clamping seat 13 and threadedly connected to the right clamping seat 14, when the adjusting screw 17 rotates, it will drive the right clamping seat 14 to move toward the left clamping seat 13 along the guide rod 12, thereby clamping the workpiece 7, and clamping the workpiece 7 between the left positioning notch 1301 and the right positioning notch 1401 to ensure that the workpiece 7 will not shake. Due to the symmetrical relationship between the left mounting rod 4 and the right mounting rod 9, the workpiece 7 is installed between the left clamping seat 13 and the right clamping seat 14, and the rotating axis 3 must be radially perpendicular to the workpiece 7, thereby ensuring the installation position relationship between the workpiece 7 and the cutter 10; after the workpiece 7 is installed, according to the size of the intersection line to be processed, the cutter 10 is slid on the rotary frame 5, and the distance from the cutter 10 to the rotary shaft 3 is adjusted, thereby adjusting the rotation radius. After the adjustment, the first hand wheel 1 is rotated, and at the same time, a downward force is applied to the rotary shaft 3, so that the lower end face of the limit rod 18 is always in contact with the surface of the workpiece 7, thereby ensuring that the distance between the cutter 10 and the surface of the workpiece 7 remains unchanged during the rotation process, so that the intersection line can be accurately cut, and the processing of the intersection line can be completed by rotating one circle.

[0036] The above descriptions are merely embodiments of the present invention, and are not intended to limit the scope of patent protection of the invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present invention.

Claims

1. A plasma intersecting wire cutting device, characterized in that: It includes a clamping mechanism for fixing a workpiece, a cutter, and a motion mechanism for driving the cutter to move on the surface of the workpiece in an intersecting line trajectory, the clamping mechanism includes a symmetrically arranged left clamping seat and a right clamping seat and an adjusting component for adjusting the distance between the left clamping seat and the right clamping seat, a left positioning notch is provided on the side of the left clamping seat close to the right clamping seat, and a right positioning notch is provided on the side of the right clamping seat close to the left clamping seat, and the left positioning notch and the right positioning notch are combined to form a rhombus-shaped notch for positioning and installing the workpiece; The motion mechanism comprises a rotary shaft and a rotary frame, wherein the rotary shaft is rotatably mounted above the workpiece through a centering mounting frame and the rotary shaft is radially perpendicular to the workpiece, the rotary frame is arranged at the lower end of the rotary shaft and the rotary frame is perpendicular to the rotary shaft, and the cutter is mounted on the rotary frame so that the cutter rotates with the rotary shaft as the rotation center to machine an intersection line on the workpiece; The centering mounting frame comprises two symmetrically arranged left and right mounting rods in a Z shape, the lower end of the left mounting rod is rotatably mounted on the left clamping seat, the lower end of the right mounting rod is rotatably mounted on the right clamping seat, the upper end of the left mounting rod is rotatably connected to the upper end of the right mounting rod by a rotating guide sleeve, the upper end of the left mounting rod and the upper end of the right mounting rod are rotatably connected by a rotating guide sleeve, the upper end of the left mounting rod and the upper end of the right mounting rod are both provided with a rotating hole, the rotating guide sleeve is rotatably mounted in the rotating hole, the rotating guide sleeve is provided with a rotating hole, the rotating shaft is movably passed through the rotating hole, the upper end of the rotating shaft is provided with a first hand wheel for rotating the rotating shaft, the rotating shaft is sleeved with a reset spring for upwardly resetting the rotating shaft, the reset spring is located between the first hand wheel and the rotating guide sleeve, and the rotating frame can be radially slidably mounted on the lower end of the rotating shaft relative to the rotating shaft so as to slide the rotating frame according to needs to adjust the rotating radius of the cutter.

2. The plasma intersecting wire cutting device according to claim 1, characterized in that: The rotating frame is provided with a dovetail groove extending along the length direction of the rotating frame, the lower end of the rotating shaft is provided with a dovetail slider, the dovetail slider is slidably installed in the dovetail groove, one end of the rotating frame is provided with a fixed seat, and the cutter is fixed on the fixed seat.

3. The plasma intersecting wire cutting device according to claim 2, characterized in that: A limit rod is fixedly installed on the fixed seat and is arranged parallel to the side of the cutter. The horizontal plane where the lower end of the limit rod is located is lower than the horizontal plane where the lower end of the cutter is located, and the lower end of the limit rod is always in contact with the workpiece surface to keep the distance between the cutter and the workpiece unchanged.

4. The plasma intersecting wire cutting device according to claim 1, characterized in that: A left bearing seat is provided on the upper side of the left clamping seat, a right bearing seat is provided on the upper side of the right clamping seat, two guide rods are provided between the left bearing seat and the right bearing seat, the right end of the guide rod is fixedly connected to the right bearing seat, and the left bearing seat is slidably connected to the guide rod.

5. The plasma intersecting wire cutting device according to claim 4, characterized in that: The adjusting assembly includes an adjusting screw and a second hand wheel arranged at one end of the adjusting screw, the other end of the adjusting screw is rotatably mounted on the left bearing seat, and the adjusting screw is threadedly connected to the right bearing seat so that when the second hand wheel is rotated, the right clamping seat is driven along the guide rod to move closer to or away from the left clamping seat to clamp or release the workpiece.

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