Plasma cutting circle and circle dividing line device

Abstract

The utility model discloses a kind of plasma cutting circle and circle line device, belong to mechanical cutting technical field;Including center positioning assembly, ruler body component, connecting seat, cutting torch fixed seat, pneumatic cutting rotating assembly, scribe component;Center positioning assembly includes center positioning needle and center needle positioning seat;Ruler body component is detachably connected on center positioning needle, center positioning needle is rotatably connected with center needle positioning seat, center positioning needle is coincident with the center of part;The end of ruler body component away from center positioning needle is connected with connecting seat, height-adjustable cutting torch fixed seat is connected on connecting seat, pneumatic cutting rotating assembly is connected with cutting torch fixed seat to make cutting torch fixed seat rotate around the center of part, scribe component and cutting torch fixed seat are used alternately;The utility model can be operated for sheet metal part plasma cutting circle and circle line;Provide reliable automatic processing device, make operation quick and convenient, improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical cutting technology, specifically a plasma cutting and scribing device for circles. Background Technology

[0002] Plasma arc cutting machines are machines that use plasma cutting technology to process metal materials. Plasma cutting utilizes the heat of a high-temperature plasma arc to melt (and evaporate) the metal part or part of the workpiece at the cut, and uses the momentum of high-speed plasma to remove the molten metal to form a cut.

[0003] Plasma cutting is widely applicable and has strong potential for development in the cutting and processing of most circular sheet metal parts, including outer diameters, inner holes, outer arcs, and inner arcs. However, when processing irregularly shaped sheet metal, such as 500mm × 600mm sheets, or holes larger than φ50, plasma cutting cannot be performed with proper positioning, nor can it be used for pre-processing of circular sheet metal parts with outer diameters, inner holes, outer arcs, and inner arcs. Therefore, laser cutting cannot be used for processing the outer diameters, inner holes, outer arcs, and inner arcs of various parts. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art by proposing a plasma cutting and scribing device to solve the problem that the outer circles, inner holes, outer arcs, and inner arcs of various parts cannot be laser cut.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A plasma cutting and scribing device includes a center positioning component, a ruler component, a connecting seat, a cutting torch fixing seat, a pneumatic cutting rotation component, and a scribing component. The center positioning assembly includes a center positioning pin and a center pin positioning seat; the ruler assembly is detachably connected to the center positioning pin, the center positioning pin is connected to the part to be cut through the center pin positioning seat, and the center positioning pin and the center pin positioning seat are rotatably connected, with the center positioning pin coinciding with the center of the part. The end of the ruler assembly away from the center positioning pin is connected to a connecting seat. The connecting seat is connected to a height-adjustable cutting torch holder. The cutting torch is connected to the cutting torch holder. The pneumatic cutting rotation assembly is connected to the cutting torch holder, causing the cutting torch holder to rotate around the center of the part. The scribing assembly is used interchangeably with the cutting torch holder. The scribing assembly is used to connect with the connecting seat.

[0006] Furthermore, the top of the central positioning pin is provided with a threaded hole, and the upper part of the central positioning pin is provided with a through hole that runs from left to right, with the threaded hole connected to the through hole; the bottom of the central positioning pin is a conical pointed structure, and the outer wall of the central positioning pin is a cylindrical structure; the bottom of the central positioning pin is a conical pointed structure to coincide with the center of the part; the ruler assembly passes through the through hole on the central positioning pin, and the wing bolt is screwed in from the top of the threaded hole to fix the ruler assembly.

[0007] Furthermore, the center pin positioning seat is a semi-circular cylindrical structure, with a magnetic column inside, and the two center pin positioning seats fix the center positioning pin.

[0008] Furthermore, the connecting seat has multiple connecting holes arranged sequentially along its height direction; the cutting torch fixing seat has a vertically penetrating fixing hole, through which the cutting torch passes and is fixed to the cutting torch fixing seat with bolts, and the bottom of the cutting torch head is adjacent to the part; connecting ears are provided on both sides of the cutting torch fixing seat.

[0009] Furthermore, the pneumatic cutting rotating assembly includes a height positioning plate; the height positioning plate is a vertical plate structure, and multiple connecting holes are evenly arranged on the height positioning plate along its height direction, and the height positioning plate is parallel to the connecting seat, with the connecting holes on the height positioning plate corresponding one-to-one with the connecting holes on the connecting seat; the connecting ears on both sides of the cutting torch fixing seat are respectively connected to the connecting holes on the height positioning plate and the connecting seat by screws.

[0010] Furthermore, the pneumatic cutting rotary assembly also includes a miniature pneumatic motor, rollers, and bearing assemblies; the bottom of the height positioning plate is connected to the bearing assembly, the bearing assembly is connected to the rollers, the bottom of the rollers contacts the parts, and the miniature pneumatic motor and drive end are connected to the bearing assembly.

[0011] Furthermore, the scribing assembly includes a scribing needle holder, a scribing needle cover, and a scribing needle; both sides of the scribing needle holder are provided with connecting ears, which are connected to the height positioning plate and the connecting hole of the connecting seat by screws; the bottom of the scribing needle holder is provided with a scribing needle connecting hole, and a scribing needle cover is fixed in the scribing needle connecting hole by fasteners, and the scribing needle is movably connected in the scribing needle cover.

[0012] Furthermore, a spring connects the scriber to the scriber cap.

[0013] The beneficial effects of this utility model compared to the prior art are as follows: This invention can perform plasma cutting of circles and scribing of lines for sheet metal parts; it can achieve both cutting circles and scribing of lines, and the height of the cutting torch and the cutting radius can be adjusted for more precise cutting; the reliable automatic processing device provided by this invention makes operation quick and convenient, and improves processing efficiency. Attached Figure Description

[0014] Figure 1 This is a partial side sectional view of the plasma cutting circle of this utility model; Figure 2 for Figure 1 View from AA direction; Figure 3 This is a diagram of the device for drawing circular lines according to this utility model; Figure 4 A flowchart for cutting and drawing circles; In the diagram: 1. Wing bolt; 2. Center pin; 3. Ruler assembly; 4. Screw; 5. Connecting seat; 6. Cutting torch mounting seat; 7. Height positioning plate; 10. Miniature pneumatic motor; 11. Bearing assembly; 12. Roller; 13. Magnetic column; 14. Center pin positioning seat; 19. Scribing needle cover; 20. Scribing needle; 21. Spring; 22. Scribing needle mounting seat; 23. Washer; 24. Cutting torch. Detailed Implementation

[0015] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0016] See Figures 1 to 3 This embodiment proposes a plasma cutting circle and scribing device, including a circle center positioning component, a ruler component 3, a connecting seat 5, a cutting torch fixing seat 6, a pneumatic cutting rotation component, and a scribing component; Specifically, during cutting, the center position of the part to be processed is located by a center positioning assembly. The center positioning assembly includes a center positioning pin 2, a wing bolt 1, a center pin positioning seat 14, and a magnetic column 13. The center positioning pin 2 has a threaded hole at its top and a through hole running horizontally through its upper part, with the threaded hole connected to the through hole. The bottom of the center positioning pin 2 has a conical pointed structure, and its outer wall has a cylindrical structure. The conical pointed structure at the bottom of the center positioning pin 2 is used to coincide with the center of the part and is fixed by two semi-circular cylindrical center pin positioning seats 14. Specifically, the center pin positioning seat 14 has a magnetic column 13 inside, which fixes the center positioning pin 2 at the center of the part, and the outer wall of the center positioning pin 2 can rotate relative to the center pin positioning seat 14. The ruler assembly 3 passes through the through hole on the center positioning pin 2, and the wing bolt 1 is screwed in from the top of the threaded hole to fix the ruler assembly 3.

[0017] The end of the ruler assembly 3 furthest from the center positioning pin 2 is the zero point end, and the zero point end of the ruler assembly 3 is connected to the connecting seat 5. The connecting seat 5 is perpendicular to the ruler assembly 3, and multiple connecting holes are arranged sequentially along its height direction on the connecting seat 5. The cutting torch fixing seat 6 is provided with a vertically penetrating fixing hole. The cutting torch 24 passes through the fixing hole and is fixed to the cutting torch fixing seat 6 with bolts. The bottom of the cutting torch 24 is adjacent to the part. Connecting ears are provided on both sides of the cutting torch fixing seat 6. The pneumatic cutting rotary assembly includes a height positioning plate 7, a miniature pneumatic motor 10, rollers 12, and a bearing assembly 11. The height positioning plate 7 is a vertical plate structure with multiple connecting holes evenly arranged along its height direction. The height positioning plate 7 is parallel to the connecting seat 5, and the connecting holes on the height positioning plate 7 correspond one-to-one with the connecting holes on the connecting seat 5. The connecting ears on both sides of the cutting torch fixing seat 6 are connected to the connecting holes of the height positioning plate 7 and the connecting seat 5 respectively by screws 4. The height of the cutting torch fixing seat 6 can be adjusted by the height position of the connecting holes, thereby adjusting the height of the cutting torch 24. The cutting torch fixing seat 6 enables the radius R and height positioning of the cutting torch 24 during cutting. The radius R of the cutting torch 24 is determined by the scale assembly 3; the height positioning of the cutting torch 24 is achieved by adjusting the height of the cutting torch fixing seat 6. The pneumatic cutting rotary assembly enables automatic circumferential cutting of the cutting torch while maintaining a fixed cutting height.

[0018] The bottom of the height positioning plate 7 is connected to the bearing assembly 11, which is connected to the roller 12. The bottom of the roller 12 contacts the part. The micro pneumatic motor 10 and the drive end are connected to the bearing assembly 11. The micro pneumatic motor 10 drives the height positioning plate 7, the cutting torch fixing seat 6, the cutting torch 24, the ruler assembly 3, and the center positioning pin 2 to rotate around the center of the part. During the rotation, the cutting torch 24 performs circular cutting on the part.

[0019] The scribing assembly replaces the cutting torch holder 6. The scribing assembly includes a scribing pin holder 22, a spring 21, a scribing pin cover 19, and a scribing pin 20. The scribing pin holder 22 has connecting ears on both sides, and a washer 23 is connected to the top of the scribing pin holder 22. The connecting ears on both sides of the scribing pin holder 22 are connected to the connecting holes of the height positioning plate 7 and the connecting seat 5 by screws 4. The height of the scribing pin holder 22 can be adjusted by the height position of the connecting holes. The bottom of the scribing pin holder 22 has a scribing connecting hole, in which the scribing pin cover 19 is fixed by bolts, nuts, or other fasteners. The scribing pin 20 is movably connected within the scribing pin cover 19, and a spring 21 connects the scribing pin 20 and the scribing pin cover 19. The spring 21 can track and compensate for the height of the scribing pin 20, enabling automatic scribing before machining circular parts such as sheet metal outer diameters, inner holes, outer arcs, and inner arcs. When marking is required, remove the cutting torch holder 6 along with the cutting torch 24 and replace it with the marking assembly.

[0020] The specific method of using the plasma cutting and scribing device described in this embodiment includes the following steps: 1) such as Figure 1 As shown, a center positioning component is installed on the ruler body assembly 3. According to the radius R dimension of the part drawing, the ruler body scale is corresponding to the diameter of the ruler body and the component is fastened with a wing bolt 1. 2) Install the connecting seat 5 on the right side of the ruler assembly 3 and pre-tighten it with screws; then install the cutting torch fixing seat 6 and tighten it with screws; then install the pneumatic cutting rotating assembly, insert the cutting torch 24 into the cutting torch fixing seat 6, adjust the height H of the cutting torch 24 (reference size 41mm), and tighten the screws to fix it. 3) In this embodiment, a φ350mm hole is plasma-cut in the middle of an iron plate with an outer dimension of 592mm × 2286mm. The center positioning component is positioned at R175mm (R=350 / 2=175mm). That is, the center positioning pin 2 of this device is aligned with the center of the circle of the part to be cut. The two center pin positioning seats 14 are closed relative to each other to magnetically limit the center positioning pin 2. A trial cut is performed. After the size meets the dimension R in the drawing, batch cutting is carried out.

[0021] 4) With the cutting center positioned, the radius R selected, and the height adjusted to remain unchanged, the micro pneumatic motor 10 is turned on to drive the roller 12 to rotate. The cutting torch 24 rotates around the center to achieve automatic circumferential cutting. The roller 12 can reduce cutting resistance. When drawing a circular line, remove the cutting torch holder 6, then fix the scribing needle holder 22 between the connecting seat 5 and the height positioning plate 7. Replace the scribing assembly, tighten it, and turn on the micro pneumatic motor 10 to drive the roller 12 to rotate, thus performing the scribing operation. See the above operating procedure for details. Figure 4 .

[0022] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection determined by the submitted claims.

Claims

1. A plasma cutting and scribing device for circles, characterized in that, Includes a center positioning component, a ruler component (3), a connecting seat (5), a cutting torch fixing seat (6), a pneumatic cutting rotating component, and a scribing component; The center positioning assembly includes a center positioning pin (2) and a center pin positioning seat (14); the ruler assembly (3) is detachably connected to the center positioning pin (2), the center positioning pin (2) is connected to the part to be cut through the center pin positioning seat (14), and the center positioning pin (2) is rotatably connected to the center pin positioning seat (14), and the center positioning pin (2) coincides with the center of the part; The end of the ruler assembly (3) away from the center positioning pin (2) is connected to a connecting seat (5). The connecting seat (5) is connected to a height-adjustable cutting torch fixing seat (6). The cutting torch (24) is connected to the cutting torch fixing seat (6). The pneumatic cutting rotating assembly is connected to the cutting torch fixing seat (6) to make the cutting torch fixing seat (6) rotate around the center of the part. The scribing assembly is used interchangeably with the cutting torch fixing seat (6). The scribing assembly is used to connect with the connecting seat (5).

2. The plasma cutting and scribing device according to claim 1, characterized in that, The top of the center positioning pin (2) is provided with a threaded hole, and the upper part of the center positioning pin (2) is provided with a through hole that runs through the left and right sides. The threaded hole is connected to the through hole. The bottom of the center positioning pin (2) is a conical pointed structure, and the outer wall of the center positioning pin (2) is a cylindrical structure. The bottom of the center positioning pin (2) is a conical pointed structure to coincide with the center of the part. The ruler assembly (3) passes through the through hole on the center positioning pin (2), and the wing bolt (1) is screwed in from the top of the threaded hole and fixes the ruler assembly (3).

3. The plasma cutting and scribing device according to claim 2, characterized in that, The center needle positioning seat (14) is a semi-circular cylindrical structure. A magnetic column (13) is provided inside the center needle positioning seat (14). The two center needle positioning seats (14) fix the center positioning needle (2).

4. The plasma cutting and scribing device according to claim 1, characterized in that, Multiple connecting holes are arranged sequentially along the height direction of the connecting seat (5); the cutting torch fixing seat (6) is provided with a vertically penetrating fixing hole, the cutting torch (24) passes through the fixing hole and is fixed to the cutting torch fixing seat (6) by bolts, and the bottom of the cutting torch (24) is adjacent to the part; connecting ears are provided on both sides of the cutting torch fixing seat (6).

5. The plasma cutting and scribing device according to claim 4, characterized in that, The pneumatic cutting rotating assembly includes a height positioning plate (7); the height positioning plate (7) is a vertical plate structure, and multiple connecting holes are evenly arranged on the height positioning plate (7) along its height direction. The height positioning plate (7) is parallel to the connecting seat (5), and the connecting holes on the height positioning plate (7) correspond one-to-one with the connecting holes on the connecting seat (5); the connecting ears on both sides of the cutting torch fixing seat (6) are connected to the connecting holes of the height positioning plate (7) and the connecting seat (5) respectively by screws (4).

6. The plasma cutting and scribing device according to claim 5, characterized in that, The pneumatic cutting rotary assembly also includes a micro pneumatic motor (10), a roller (12), and a bearing assembly (11); the bottom of the height positioning plate (7) is connected to the bearing assembly (11), the bearing assembly (11) is connected to the roller (12), the bottom of the roller (12) is in contact with the part, and the micro pneumatic motor (10) and the drive end are connected to the bearing assembly (11).

7. The plasma cutting and scribing device according to claim 5, characterized in that, The marking assembly includes a marking needle holder (22), a marking needle cover (19), and a marking needle (20). Both sides of the marking needle holder (22) are provided with connecting ears, which are connected to the height positioning plate (7) and the connecting hole of the connecting seat (5) by screws (4). The bottom of the marking needle holder (22) is provided with a marking needle connecting hole, and the marking needle cover (19) is fixed in the marking needle connecting hole by fasteners. The marking needle (20) is movably connected in the marking needle cover (19).

8. The plasma cutting and scribing device according to claim 7, characterized in that, A spring (21) connects the scriber (20) and the scriber cap (19).

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