CN218926515U - Profiling device with adjustable H-shaped steel member groove cuts - Google Patents
Profiling device with adjustable H-shaped steel member groove cuts Download PDFInfo
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- CN218926515U CN218926515U CN202223032598.1U CN202223032598U CN218926515U CN 218926515 U CN218926515 U CN 218926515U CN 202223032598 U CN202223032598 U CN 202223032598U CN 218926515 U CN218926515 U CN 218926515U
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Abstract
The utility model discloses an adjustable profiling device for cutting an H-shaped steel component groove, which is characterized in that a guide groove die and an additional groove die provide linear guide for cutting torch translation, the inclination angle between the axis of a cutting torch cutting nozzle and the surface of a profile steel is changed by adjusting the included angle between the guide groove die or the additional groove die and the side surface of a profiling support through an angle adjusting screw, the distance between the cutting torch cutting nozzle and the surface of the H-shaped steel is changed by adjusting the distance between a supporting template and the top surface of the profiling support through a height adjusting screw, the supporting template is connected with the profiling support through the height adjusting screw, one side template of the supporting template provides guide for H-shaped steel web cutting, and the profiling support is placed on the surface of the H-shaped steel to provide positioning for cutting torch working.
Description
Technical Field
The utility model relates to the technical field of tools for cutting H-shaped steel member grooves in building steel structure manufacturing, in particular to an adjustable profiling device for cutting H-shaped steel member grooves, which aims at cutting and processing end face grooves and web plates of H-shaped steel wings.
Background
In the processing of the H-shaped steel member of the steel structure, the end face of a wing plate of the H-shaped steel member is beveled, a web lock notch is locked and the cross section is cut according to the process requirement; the traditional conventional groove mode adopts a rail type semi-automatic flame cutting machine or a plasma cutting machine for cutting, and the web locking port and the section cutting side are processed by a special machine tool or processed by pure manual work; for the H-shaped steel end face groove, a plurality of H-shaped steels with the same section specification are required to be orderly arranged and then cut by a rail type semi-automatic flame cutting machine, if the section specifications are different or the plate thicknesses are greatly different, the method is not applicable, for H-shaped steel web locking and section cutting, workpieces are required to be hoisted to a special machine tool for processing, but workers are used to directly cut by a gas cutting torch in a purely manual mode due to the fact that the rail type semi-automatic flame cutting machine and the special machine tool are used for cutting the H-shaped steel end face groove and the web locking. The negative result is that the groove surface and the cut section are not straight or smooth, which is difficult to meet the process quality requirement, and the groove surface has to be manually polished, so that the labor cost is secondarily increased.
Disclosure of Invention
The utility model provides an adjustable profiling device for cutting an H-shaped steel member groove, which aims at cutting an end face of the H-shaped steel and cutting a web lock notch, and aims at overcoming the defect that the quality of a groove and a cutting surface is poor in a manual groove cutting mode and considering the working efficiency and the operation convenience. The guide groove die and the additional groove die provide linear guide for cutting torch translation, the inclination angle of the cutting nozzle axis of the cutting torch and the profile steel surface is changed by adjusting the included angle between the guide groove die or the additional groove die and the profile steel support side face through an angle adjusting screw, the distance between the cutting nozzle of the cutting torch and the H-shaped steel surface is changed by adjusting the distance between the supporting template and the profile steel support top face through a height adjusting bolt, the supporting template is connected with the profile steel support through the height adjusting bolt, and one side template provides guide for cutting the H-shaped steel web plate. The utility model provides an adjustable profiling device aiming at cutting and processing of wing plate grooves and web plates of H-shaped steel components, which has the characteristics and advantages of simple structure, convenient use, practicality and flexibility, can effectively overcome the defects of the traditional purely manual grooves, and improves the groove quality and the working efficiency.
The technical scheme for realizing the double-function cutting is as follows: the adjustable profiling device for the groove cutting of the H-shaped steel member comprises a profiling support, a supporting template, a guiding groove die, a height adjusting bolt, an angle adjusting screw, an additional groove die and a fixing screw, wherein the supporting template, the guiding groove die, the height adjusting bolt and the angle adjusting screw are assembled on the profiling support to form a component, and the component is placed on the machined surface of the H-shaped steel to provide positioning for cutting torch cutting; the guide groove mold and the additional groove mold provide linear guide for the translation of the cutting torch, the guide groove mold is connected with the support template, the additional groove mold is connected with the guide groove mold, and the inclination angle between the axis of the cutting nozzle of the cutting torch and the surface of the H-shaped steel is changed by adjusting the included angle between the guide groove mold or the additional groove mold and the side surface of the profiling support through an angle adjusting screw; the support template is connected with the profiling support, the distance between the cutting torch cutting nozzle and the surface of the H-shaped steel is changed by adjusting the distance between the support template and the top surface of the profiling support through the height adjusting bolt, and the template on one side of the support template provides guidance for cutting the web of the H-shaped steel.
The profiling support is a section of square or rectangular steel pipe and is connected with the support template through a height adjusting bolt.
The supporting template is made of a strip steel plate, the section of the supporting template is Z-shaped, the heightening nut is welded on the upper surface of the supporting template and can be connected with the height adjusting bolt, and the bearing piece is welded on the lower surface of two end parts of one side of the supporting template and can be assembled and connected with the guide groove die; the other side is connected into a guiding edge by a curve section and straightness to provide guiding for H-shaped steel web locking and section cutting.
The guide groove die is further provided with an angle-shaped die plate with a cross section included angle smaller than 90 degrees, the two ends of the short side plate of the cross section are provided with round shaft sections which are assembled and connected with bearing parts at the two ends of one side of the support die plate, and the middle part of the short side plate in the length direction is provided with a threaded hole which can be assembled with an angle adjusting screw; the long side plate of the section of the guide slot die is provided with a long slot hole, so that a cutting torch cutting nozzle can be inserted into the slot hole to move.
The height adjusting bolt is connected with the height adjusting nut and penetrates through the upper side pipe wall of the profiling support to be in contact with the lower side inner pipe wall, and the distance between the support template and the upper surface of the profiling support can be adjusted by rotating the height adjusting bolt.
The angle adjusting screw is connected with the guide groove die and contacts with the side surface of the profiling support, and the included angle between the short side plate of the support template and the side surface of the profiling support can be adjusted by rotating the angle adjusting screw.
The cutting torch cutting nozzle is inserted into the slot hole to move, and the screw hole is arranged in the long side plate, so that the additional slot die can be assembled on the guide slot die by using a fixing screw.
The utility model has the beneficial effects that:
1. because the profiling provides angular positioning and linear or curve guiding for the gesture translation of the cutting torch, the surface of the groove and the cutting section can be ensured to be flat or smooth, and the process quality requirement is met.
2. For H-shaped steel with different plate thicknesses, the angle and the height can be quickly adjusted according to the technological groove angle requirement on the wing plate, the locking opening size requirement on the web plate and the working distance between the cutting torch cutting nozzle and the cutting surface, and the operation is flexible and convenient.
3. Compared with a roller-way type semiautomatic flame cutting machine or a special machine tool, a series of operation actions of aligning the end faces of a plurality of steel sections with the same specification by using a travelling crane, placing a track, placing the cutting machine, adjusting the angle and the height of a cutting nozzle, dismantling the cutting machine and the track after finishing, or hoisting a workpiece to the machine tool by using the travelling crane for processing one by one are omitted, so that the working time is saved and the efficiency is improved.
Drawings
FIG. 1 is a schematic view of H-steel web lock notch cutting;
FIG. 1-1 is a top view of FIG. 1;
FIGS. 1-2 are cross-sectional views of Y-Y of FIG. 1;
FIG. 2 is a schematic view of an outer groove on the end surface of an H-shaped steel wing plate;
FIG. 2-1 is a right side view of FIG. 2;
FIG. 2-2 is a top view of FIG. 2-1;
FIG. 3 is a schematic view of an H-section steel wing panel with an inner groove on the end face;
FIG. 3-1 is a right side view of FIG. 3;
FIG. 3-2 is a top view of FIG. 3-1;
fig. 4 is a schematic view of the angle scale marks at the connection of the guide slot die and the slot die support.
In the figure: the device comprises a profiling support 1, a supporting template 2, a guide groove die 3, a height adjusting bolt 4, an angle adjusting screw 5, an additional groove die 6, a fixing screw 7, a heightening nut 2.1 and a bearing piece 2.2.
Detailed Description
The utility model is further described below with reference to the drawings and the detailed description.
As shown in fig. 1, 1-2, 2-1, 2-2, 3-1, 3-2, an adjustable profiling device for cutting an H-shaped steel member groove comprises a profiling support 1, a support template 2, a guide groove die 3, a height adjusting bolt 4, an angle adjusting screw 5, an additional groove die 6 and a fixing screw 7. The profiling support 1 is a section of square or rectangular steel pipe, and after the supporting template 2, the guide groove die 3, the height adjusting bolt 4 and the angle adjusting screw 5 are assembled on the profiling support 1, the profiling support is placed at the end part of the H-shaped steel to provide positioning for the cutting torch to work;
the support template 2 is folded or spliced into a Z-shaped template, one side edge is used for assembling the guide groove die 3, and the other side edge is made into a guide line with two sections of symmetrical arcs connected with one section of straight line, and is used for locking the H-shaped steel web and cutting and guiding the section;
the included angle between the long side plate and the short side plate of the guide groove mold 3 is the minimum bevel angle beta 0 (=30°), slots in the long side plates provide linear guidance for torch translation; the round shaft sections at the two ends of the short side plate of the guide groove die 3 are assembled and connected with the bearing pieces 2.2 which are welded and fixed on the lower surfaces of the two ends of one side of the support die plate 2, so that the guide groove die 3 can swing relative to the side surface of the die support 1 under the support of the bearing pieces 2.2. The inclination angle between the axis of the cutting nozzle of the cutting torch and the surface of the profile steel is changed by adjusting the included angle between the guide groove die 3 and the side surface of the profiling support 1 through the angle adjusting screw 5;
the method comprises the steps that a support template 2 is arranged on the upper surface of a profiling support 1, the side used for locking a notch of an H-shaped steel web and cutting a section is attached to the side surface of the profiling support 1, two height adjusting nuts 2.1 with proper specifications are welded on a position line where the vertical surface of the longitudinal axis of the profiling support 1 and the support template 2 correspondingly intersect, and then round holes are drilled on the pipe wall of the upper surface of the profiling support 1 at the positions of the two height adjusting nuts 2.1, wherein the diameter of the round holes is equal to the nominal diameter of a height adjusting bolt 4;
two height adjusting bolts 4 respectively penetrate through the height adjusting nuts 2.1 on the supporting template 2 and the upper pipe wall of the profiling support 1, so that the ends of the height adjusting bolts 4 are contacted with the inner surface of the pipe wall below the profiling support 1;
the angle adjusting screw 5 is connected with a screw hole on the short side plate of the guide groove die 3, so that the end head of the angle adjusting screw 5 is contacted with the side surface of the profiling support 1, and the short side plate of the guide groove die 3 is adjusted to be parallel to the side surface of the profiling support 1;
after the assembly is completed, the distance between the cutting torch cutting nozzle and the surface of the profile steel is changed by rotating the height adjusting bolt 4 to adjust the distance between the supporting template 2 and the upper surface of the profile support 1, and the inclination angle between the axis of the cutting torch cutting nozzle and the surface of the profile steel is changed by adjusting the included angle between the guide groove die 3 and the side surface of the profile support 1 by rotating the angle adjusting bolt 5.
As shown in fig. 3, 3-1 and 3-2, when the lower wing plate of the H-shaped steel needs to be internally beveled, the additional groove die 6 is assembled and connected with the guide groove die 3 on the profiling support 1 through the fixing screw 7, so that the cutting torch is converted from the outward beveled posture to the inward beveled posture.
As shown in fig. 4, a plurality of included angle graduation marks are marked on the surfaces of the two bearing pieces 2.2, and original position pointer lines are marked on vertical axes on the end surfaces of round shaft sections at two ends of the guide groove die 3 (when the short side plates are in a parallel state with the side surfaces of the profiling support 1); the angle beta of the common groove is 30-45 degrees, and the included angle between each scale line is 5 degrees.
The length L of the profile support 1 and the length of the slot in the guide slot die 3 can be determined according to the width B and the height H of the H-profile steel (typically l=h-2 times the thickness of the wing-cutting torch-cutting nozzle diameter).
The profiling device is flexible and convenient to operate, suitable postures (inclined angles and heights) of the cutting torch cutting nozzles can be quickly adjusted for H-shaped steel with different plate thicknesses, then the wing plates are beveled, and the web plates are subjected to notch locking cutting processing.
Description of the preferred embodiments
As shown in fig. 1, 1-1 and 1-2, the steps of the H-shaped steel web locking and section cutting operation are as follows:
(1) And horizontally placing the H-shaped steel on a jig frame, and drawing a straight line section perpendicular to the axis of the H-shaped steel on the position, which is away from the end surface and needs to be cut by the section, on the web surface of the H-shaped steel by using a steel tape and a gypsum pen as cutting lines.
(2) Placing the profiling support 1 near the inner side of the cutting line of the H-shaped steel web plate, and enabling one side of the locking notch cutting template in the support template 2 to be parallel and close to the cutting line; placing one side of the lower edge surface of a cutting nozzle nut of a cutting torch on the edge of a locking notch cutting template, enabling the axis of the cutting nozzle to be perpendicular to the web surface, and axially micro-moving a profiling support 1 to enable the axis of the cutting nozzle to be aligned with a cutting line; observing whether the distance between the flame nozzle of the cutting nozzle axis and the web surface is proper according to the web thickness, if so, rotating the height adjusting bolt 4 clockwise to enable the supporting template 2 to be at the initial position d 0 To a suitable position dn.
(4) Igniting a cutting torch and adjusting a flame wire harness to a working state, tightly attaching the cutting torch to the inner surface of a wing plate on one side of the H-shaped steel, enabling one side of the lower side surface of a cutting torch nut to be placed and perpendicular to the upper surface of the end surface of a web plate, and then stably holding the cutting torch to drag along a template line at uniform speed from a starting point position, so as to sequentially finish cutting a locking notch curve, a cross section straight line and a locking notch curve; and closing the cutting torch air source and taking the cutting torch away.
(5) Translating the profile modeling support 1 along the axis of the H-shaped steel to the vicinity of the other end to be cut and turning over for 180 degrees for placement, repeating the steps (1) to (4), and finishing the locking of the end face of the H-shaped steel and the cutting of the section; and closing the cutting torch air source and taking the cutting torch away.
Second embodiment
As shown in fig. 2, 2-1 and 2-2, the operation steps of chamfering the upper wing plate of the H-shaped steel are as follows:
(1) And vertically placing one H-shaped steel or a plurality of H-shaped steels with the same specification on the jig frame, and drawing a straight line section perpendicular to the axis of the H-shaped steel at the position, which is required to be beveled, of the upper wing plate surface of the H-shaped steel by using a square and a gypsum pen, as a bevel cutting line.
(2) The profiling support 1 is arranged near the inner side of a groove cutting line at one end of the H-shaped steel, one side of the guiding groove die 3 is parallel and is close to the cutting line, the angle adjusting screw 5 of the guiding groove die 3 is rotated clockwise according to the groove angle requirement corresponding to the thickness of the wing plate of the H-shaped steel, and the included angle between the short side plate of the guiding groove die 3 and the side surface of the profiling support 1 is adjusted to a required position beta n (angle beta) by referring to the angle scale mark on the bearing piece 2.2 0 No adjustment is required when 30 °).
(3) Inserting a cutting torch cutting nozzle into a slotted hole of a guide slot die 3, flatly pasting the lower side surface of a cutting nozzle nut with a slot hole plate, observing whether the distance between a flame nozzle of a cutting nozzle axis and the upper surface of H-shaped steel is proper, and whether an extension line of the cutting nozzle axis intersects with a groove cutting line of the upper surface, if so, rotating a height adjusting bolt 4 clockwise to enable a support template 2 to be at an initial position d 0 When the distance is dn to a proper position, if the distance is not intersected, the axial position of the profiling support 1 is slightly moved so that the extension line of the cutting torch axis and the bevel of the upper wing plate surface are cutThe lines intersect.
(4) Taking out the cutting gun from the slotted hole of the guide slot die 3, igniting the cutting nozzle, adjusting the flame harness to a working state, inserting a cutting torch into one end of the slotted hole in the guide slot die 3 and placing the cutting torch in a correct posture, and then stably holding the cutting torch to pull or push the cutting torch from one end of the slotted hole to the other end of the slotted hole at uniform speed until the groove of the upper wing plate of the H-shaped steel is completed; and closing the cutting torch air source and taking out the cutting torch.
(5) And (3) translating the profiling support 1 to the vicinity of the other end of the groove along the axis of the H-shaped steel, and repeating the steps (1) to (4) to finish the groove cutting of the wing plate on the end face of the H-shaped steel.
(6) The height adjusting bolt 4 and the angle adjusting screw 5 which are adjusted in the guide groove die 3 are rotated anticlockwise, so that the support die plate 2 and the guide groove die 3 are reset to the initial state.
Description of the preferred embodiments
As shown in fig. 3, 3-1 and 3-2, the operation steps of opening the inner slope of the lower wing plate of the H-shaped steel are as follows:
(1) Turning over the H-shaped steel with the upper wing plate groove in the second embodiment for 180 degrees, vertically placing the H-shaped steel on the jig frame so that the lower wing plate faces upwards, and placing the profiling support 1 at one end of the H-shaped steel.
(2) And the additional groove die 6 is assembled and fixed with the guide groove die 3 by a fixing screw 7, so that the inclination angle between the cutting nozzle of the cutting torch and the surface of the H-shaped steel is converted from an outward groove posture to an inward groove posture.
(3) According to the groove angle requirement corresponding to the thickness of the H-shaped steel wing plate, the angle adjusting screw 5 in the guide groove die 3 rotates clockwise, and the included angle between the short side plate of the guide groove die 3 and the side surface of the profiling support 1 is adjusted to a required position beta n (angle beta) by referring to the angle scale marks on the bearing part 2.2 0 No adjustment is required when 30 °).
(4) Inserting a cutting torch cutting nozzle into a slot hole of an additional slot die 6, flatly pasting the lower side surface of a cutting nozzle nut with a slot hole plate, observing whether the distance between a flame nozzle on the axis of the cutting nozzle and the surface of a lower wing plate of H-shaped steel is proper, and whether an extension line of the axis of the cutting nozzle intersects with the upper corner of the end surface of the lower wing plate, if the distance is close, rotating a height adjusting bolt 4 clockwise to enable a supporting template 2 to be at an initial position d 0 If the distance is not intersected, the axial position of the profiling support 1 is slightly moved so that the extension line of the cutting nozzle axis intersects with the upper corner of the end face of the lower wing plate.
(5) Taking out the cutting torch from the slot hole of the additional slot die 6, igniting the cutting torch, adjusting the flame harness to a working state, inserting a cutting torch into one end of the slot hole of the additional slot die 6 and placing the cutting torch in a correct posture, and then stably holding the cutting torch to pull or push the cutting torch from one end of the slot hole to the other end of the slot hole at uniform speed until finishing the inner slope of the lower wing plate of the H-shaped steel; and closing the cutting torch air source and taking out the cutting torch.
(6) And (3) translating the profiling support 1 to the vicinity of the other end of the groove along the axis of the H-shaped steel, and repeating the steps (1) to (5) to finish the inner slope cutting of the lower wing plate of the end face of the H-shaped steel.
(7) The height adjusting bolt 4 and the angle adjusting screw 5 which are adjusted in the guide groove die 3 are rotated anticlockwise, so that the support die plate 2 and the guide groove die 3 are reset to the initial state; if the inner groove is not formed on the lower wing plate of the H-shaped steel any more, the additional groove die 6 and the fixing screw 7 are removed.
The utility model has the advantages that:
1. the structure is simple, the preparation is convenient, and the practicability and the adaptability are strong;
2. the adjustable H-shaped steel web plate has an adjustable function, and can meet the requirements of conventional locking cutting and beveling of H-shaped steel webs and wing plates;
3. compared with a rail-mounted semi-automatic flame cutting machine or a special machine tool, the device is flexible and convenient to operate and easy to accept and adopt by workers.
4. After flexible and convenient operation, the working efficiency can be improved on the premise of ensuring the quality.
The claims and descriptions of the present utility model are merely an enumeration of one preferred means for implementing forms and objects of the inventive concept, and the scope of the present utility model should not be construed as limited to the specific description, but rather as equivalent or similar, or alternative means as will occur to those skilled in the art based on the inventive concept.
Claims (7)
1. The utility model provides a profiling device with adjustable H shaped steel component groove cuts which characterized in that: the cutting torch cutting device comprises a profiling support (1), a supporting template (2), a guide groove die (3), a height adjusting bolt (4), an angle adjusting screw (5), an additional groove die (6) and a fixing screw (7), wherein the profiling support (1) is assembled with a component formed by the supporting template (2), the guide groove die (3), the height adjusting bolt (4) and the angle adjusting screw (5), and the component is placed on the machined surface of H-shaped steel to provide positioning for cutting of the cutting torch;
the guide groove die (3) and the additional groove die (6) provide linear guide for the translation of the cutting torch, the guide groove die (3) is connected with the support template (2), the additional groove die (6) is connected with the guide groove die (3), and the inclination angle between the axis of the cutting nozzle of the cutting torch and the surface of the H-shaped steel is changed by adjusting the included angle between the guide groove die (3) or the additional groove die (6) and the side surface of the profiling support (1) through the angle adjusting screw (5);
the support template (2) is connected with the profiling support (1), the distance between the cutting torch cutting nozzle and the surface of the H-shaped steel is changed by adjusting the distance between the support template (2) and the top surface of the profiling support through the height adjusting bolt (4), and the template on one side of the support template (2) provides guidance for cutting the web plate of the H-shaped steel.
2. An adjustable profiling device for groove cutting of an H-shaped steel member as defined in claim 1, wherein: the profiling support (1) is a section of square or rectangular steel pipe and is connected with the support template (2) through a height adjusting bolt (4).
3. An adjustable profiling device for groove cutting of an H-shaped steel member as defined in claim 1, wherein: the supporting template (2) is a template with a Z-shaped section made of a strip steel plate, and the heightening nut (2.1) is welded on the upper surface of the supporting template (2) and is connected with the height adjusting bolt (4);
the bearing parts (2.2) are welded on the lower surfaces of two end parts at one side of the supporting template (2) and are assembled and connected with the guide groove die (3); the other side is connected into a guide edge by a curve section and straightness.
4. An adjustable profiling device for groove cutting of an H-shaped steel member as defined in claim 1, wherein: the guide groove die (3) is a < template with a section included angle smaller than 90 DEG made of strip steel plates, round shaft sections are arranged at two ends of a section short side plate of the guide groove die and are assembled and connected with bearing pieces (2.2) at two ends of one side of the support template (2), and a threaded hole is arranged in the middle of the length direction of the short side plate and is connected with an angle adjusting screw (5);
a long slot hole is arranged in a long side plate of the section of the guide slot die (3), so that a cutting nozzle of a cutting torch can be inserted into the slot hole to move.
5. An adjustable profiling device for groove cutting of an H-shaped steel member as defined in claim 1, wherein: the height adjusting bolt (4) is connected with the heightening nut (2.1) and penetrates through the upper side pipe wall of the profiling support (1) to be in contact with the lower side inner pipe wall, and the distance between the support template (2) and the upper surface of the profiling support (1) is adjusted by rotating the height adjusting bolt (4).
6. An adjustable profiling device for groove cutting of an H-shaped steel member as defined in claim 1, wherein: the angle adjusting screw (5) is connected with the guide groove die (3) and contacts with the side surface of the profiling support (1), and the included angle between the short side plate of the guide groove die (3) and the side surface of the profiling support (1) is adjusted by rotating the angle adjusting screw (5).
7. An adjustable profiling device for groove cutting of an H-shaped steel member as defined in claim 1, wherein: the additional groove die (6) is a dogleg die plate with a section included angle larger than 90 degrees, a long groove hole is formed in a section short side plate of the dogleg die plate, a cutting torch cutting nozzle can be inserted into the groove hole to move, and a screw hole is formed in the section long side plate and connected with a fixing screw (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223032598.1U CN218926515U (en) | 2022-11-15 | 2022-11-15 | Profiling device with adjustable H-shaped steel member groove cuts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223032598.1U CN218926515U (en) | 2022-11-15 | 2022-11-15 | Profiling device with adjustable H-shaped steel member groove cuts |
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| CN218926515U true CN218926515U (en) | 2023-04-28 |
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| CN202223032598.1U Active CN218926515U (en) | 2022-11-15 | 2022-11-15 | Profiling device with adjustable H-shaped steel member groove cuts |
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| CN (1) | CN218926515U (en) |
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