Method for the group machining of a lifting rack

Abstract

The present disclosure provides a group processing method of lifting rack, belonging to the field of mechanical manufacturing. The group processing method comprises: cutting a steel plate to obtain a shaped piece, positioning pairs of the shaped pieces on a machine tool to form at least one column, controlling a milling cutter to mill the first corner part of the pair of shaped pieces in each column to form the first welding groove; turning over each shaped piece after forming the first welding groove, and repositioning pairs of the shaped pieces on the machine tool, so that the sharp corner of the second corner part of each shaped piece is vertically upward; controlling the milling cutter to mill the second corner part of the pair of shaped pieces in each column to form the second welding groove. The present disclosure can process multiple workpieces together, thereby improving the processing efficiency of the lifting rack.

Description

Technical Field

[0001] This disclosure pertains to the field of mechanical manufacturing, and specifically relates to a method for group processing of lifting racks. Background Technology

[0002] The lifting rack is an important component of marine engineering platforms and the main actuator during lifting operations. It is widely used in various types of marine engineering platforms, such as offshore wind power installation, offshore drilling, and offshore living support.

[0003] In related technologies, the processing of lifting rack components typically involves using a cutting tool to directly cut the steel plate into teeth to form a shaped part. Then, a welding bevel is milled on the back of the shaped part using a machine tool. The back of the shaped part faces the side containing the teeth, allowing the lifting rack to be welded to the legs of the offshore engineering platform via the welding bevel. When milling the welding bevel, the lifting rack is usually fixed to the machine tool's worktable, with the teeth of the shaped part facing the worktable and the back of the lifting rack facing the milling cutter. The welding bevel is then milled using an arc-shaped milling cutter.

[0004] However, when milling and welding bevels for the lifting rack, the machine tool can only process a single part in one operation, so the lifting racks can only be processed one by one, resulting in low work efficiency. Summary of the Invention

[0005] This disclosure provides a method for group processing of lifting racks, which allows multiple workpieces to be processed simultaneously to obtain multiple lifting racks, thereby improving the processing efficiency of lifting racks. The technical solution is as follows:

[0006] This disclosure provides a method for group processing of a lifting rack, the method comprising: cutting a steel plate to obtain a shaped part, the shaped part including a tooth and a back, the tooth and the back being arranged opposite to each other, the back including a first corner and a second corner, the first corner and the second corner being spaced apart in the thickness direction of the shaped part; positioning a plurality of the shaped parts in pairs on a machine tool to form at least one column, each column including a plurality of pairs of the shaped parts arranged along a first direction, the two shaped parts in a pair being symmetrically arranged along a second direction, the first direction being perpendicular to the second direction, the sharp corner of the first corner of the back of each shaped part being vertically upward; controlling a milling cutter to mill the first corner of each column of the shaped parts to form a first welding bevel; flipping each of the shaped parts after forming the first welding bevel and repositioning them in pairs on the machine tool, such that the sharp corner of the second corner of each shaped part is vertically upward; controlling the milling cutter to mill the second corner of each column of the shaped parts to form a second welding bevel.

[0007] In another implementation of this disclosure, the formed part further includes a first side surface and a second side surface, the first side surface and the second side surface are parallel to each other and are both connected between the back surface and the toothed portion, the first side surface is perpendicular to the thickness direction of the formed part, and the first side surface and the back surface form the first corner portion; the step of positioning the plurality of formed parts in pairs on the machine tool includes: determining the tilt angle of the formed part on the machine tool according to the angle between the first bevel surface corresponding to the first welding bevel and the first side surface, the tilt angle being the angle formed between the first side surface and the worktable surface of the machine tool; and positioning the formed part on the machine tool according to the tilt angle.

[0008] In another implementation of this disclosure, positioning the formed part on the machine tool according to the tilt angle includes: positioning a pair of formed parts symmetrically on the machine tool using a support frame; the support frame has two symmetrically arranged support planes, the symmetry planes of the support planes being perpendicular to the first direction and the second direction respectively; the minimum included angle between the support planes and the symmetry planes is less than 90°; the pair of formed parts are detachably connected to the support frame and are respectively arranged in one-to-one correspondence with the two support planes; the second side surface of each of the paired formed parts is in contact with the corresponding support plane.

[0009] In another implementation of this disclosure, the support frame includes a base plate, two side plates, and two wing plates; the base plate is detachably connected to the machine tool, the two side plates are symmetrically connected to a surface of the base plate away from the machine tool, and each side plate forms a first angle with the base plate, the first angle being the same as the tilt angle, and the support plane is the surface of the side plate away from the machine tool; the two wing plates correspond one-to-one with the two side plates, the wing plates are connected to the corresponding side plates, and form a defined space with the corresponding side plates, the forming part is located in the defined space, and the second side of the forming part is attached to and detachably connected to the side plate, and the teeth of the forming part contact the wing plates.

[0010] In another implementation of this disclosure, the ends of the two side plates furthest from the base plate are joined together.

[0011] In another implementation of this disclosure, the first included angle is 45°, and the two side plates are perpendicular.

[0012] In another implementation of this disclosure, in the direction of inclination of the side plate relative to the bottom plate, the shortest distance from the wing plate to the end of the corresponding side plate away from the bottom plate is not less than the thickness of the formed part.

[0013] In another implementation of this disclosure, when the forming parts are positioned in pairs behind the machine tool, and the sharp corner of the first corner of the back of each forming part is vertically upward, the maximum distance between the first corners of the two forming parts in the second direction is less than the diameter of the milling cutter; when the forming parts are positioned in pairs behind the machine tool, and the sharp corner of the second corner of the back of each forming part is vertically upward, the maximum distance between the second corners of the two forming parts in the second direction is less than the diameter of the milling cutter.

[0014] In another implementation of this disclosure, when multiple formed parts are positioned in pairs on a machine tool to form at least two columns, the control of the milling cutter to mill the first corner of each column of formed parts to form the first weld bevel includes: moving the milling cutter to the nth column and directly above the first pair of formed parts in the nth column; controlling the milling cutter to move along the first direction from the first pair of formed parts in the nth column to the last pair of formed parts in the nth column to mill the first corner of all formed parts in the nth column; controlling the milling cutter to move along the second direction such that the milling cutter is located in the (n+1)th column and directly above the last pair of formed parts in the (n+1)th column; controlling the milling cutter to move along the first direction from the last pair of formed parts in the (n+1)th column to directly above the first pair of formed parts in the (n+1)th column to mill the first corner of all formed parts in the (n+1)th column; repeating the above steps; where n is a positive integer.

[0015] In another implementation of this disclosure, the step of flipping each of the formed parts after forming the first welding bevel, and repositioning them in pairs on the machine tool so that the sharp corner of the second corner of each formed part is vertically upward includes: rotating each of the formed parts 180 degrees and repositioning them on the support frame, with the first side of the formed part abutting against the side plate, the rotation axis of the formed part being parallel to the first side and the second side of the formed part, and the first corner and the second corner being symmetrical about the rotation axis.

[0016] In another implementation of this disclosure, the step of flipping each of the formed parts after forming the first welding bevel, and repositioning them in pairs on the machine tool so that the sharp corner of the second corner of each formed part is vertically upward includes: rotating each of the formed parts 180 degrees and repositioning them in the defined space, with the first side of the formed part abutting against the side plate, the rotation axis of the formed part being parallel to the first side and the second side of the formed part, and the first corner and the second corner being symmetrical about the rotation axis.

[0017] The beneficial effects of the technical solutions provided in this disclosure are:

[0018] In the group machining method provided in this embodiment, when machining a rising rack, the method first positions the forming parts in pairs on the machine tool with the sharp corners of the first corners pointing vertically upwards. By controlling the horizontal movement of the milling cutter, the first corners of the pairs of forming parts in the same row can be milled to form a first welding bevel. This allows milling of all forming parts in the same row, greatly improving machining efficiency. After obtaining the first welding bevel, the forming parts are flipped over, with the sharp corners of the first corners pointing vertically upwards. Similarly, by controlling the movement of the milling cutter, the second corners of the pairs of forming parts in the same row can be milled to form a second welding bevel. This allows milling of all forming parts in the same row, greatly improving machining efficiency.

[0019] As can be seen, the above method can mill multiple shaped parts simultaneously, which can greatly improve processing efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart of a group processing method for a lifting rack provided in an embodiment of this disclosure;

[0022] Figure 2 This is a schematic diagram of the structure of the lifting rack provided in the embodiments of this disclosure;

[0023] Figure 3 yes Figure 2 The right view in the middle;

[0024] Figure 4 This is a flowchart of another group processing method for lifting racks provided in this disclosure embodiment;

[0025] Figure 5 This is a schematic diagram of the arrangement of the molded parts in an embodiment of this disclosure;

[0026] Figure 6 This is a schematic diagram of the support frame provided in an embodiment of this disclosure;

[0027] Figure 7 This is a schematic diagram of one embodiment of the molded part being positioned on a support frame according to the present disclosure;

[0028] Figure 8 yes Figure 7 A schematic diagram of direction A in the middle;

[0029] Figure 9 yes Figure 7 A schematic diagram of the B-direction;

[0030] Figure 10 This is another schematic diagram of the molded part positioned on the support frame according to an embodiment of this disclosure.

[0031] The symbols in the diagram represent the following meanings:

[0032] 200. Rising rack; 201. Tooth; 202. Back; 2021. First corner; 2022. Second corner; 2023. First welding bevel; 2024. Second welding bevel; 203. First side; 204. Second side;

[0033] 101. Base plate; 1011. Through groove; 102. Side plate; 103. Wing plate; 104. Confined space; 100. Support plane; 110. Workbench surface. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0035] This disclosure provides a method for group processing of lifting racks, such as... Figure 1 As shown, the group processing method includes:

[0036] S101: Cut the steel plate to obtain the shaped part.

[0037] In this embodiment, the formed part refers to the lifting rack that has been machined with teeth but has not been machined with a welding bevel.

[0038] like Figure 2 and 3 As shown, in this embodiment, the molded part includes a toothed portion 201 and a back portion 202, which are arranged opposite to each other. The back portion 202 includes a first corner portion 2021 and a second corner portion 2022, which are arranged at intervals in the thickness direction of the molded part.

[0039] In other words, the lifting rack 200 includes a toothed portion 201 and a back portion 202. The toothed portion 201 and the back portion 202 are arranged opposite to each other.

[0040] The molded part also includes a first side surface 203 and a second side surface 204, which are parallel to each other and are both perpendicularly connected between the back surface 202 and the toothed portion 201. The first side surface 203 and the back surface 202 form a first corner portion 2021. The second side surface 204 and the back surface 202 form a second corner portion 2022.

[0041] There are two welding bevels, including a first welding bevel 2023 and a second welding bevel 2024. The first welding bevel 2023 and the second welding bevel 2024 are located at two opposite corners on the side where the back 202 is located. That is, the first welding bevel 2023 is located on the first corner 2021, and the second welding bevel 2024 is located on the second corner 2022. The first welding bevel surface corresponding to the first welding bevel 2023 is a plane, and the first welding bevel surface corresponding to the second welding bevel 2024 is also a plane.

[0042] In this embodiment, the length of the lifting rack 200 is L = 6977 mm, and it has 4 teeth. The height of each tooth of the lifting rack 200 is 114 mm. The thickness direction of the lifting rack 200 is... Figure 2 The direction perpendicular to the paper.

[0043] S102: Position multiple formed parts in pairs on a machine tool to form at least one row.

[0044] Each column includes multiple pairs of molded parts arranged along a first direction, with the two molded parts in a pair arranged symmetrically along a second direction, the first direction being perpendicular to the second direction, and the sharp corner of the first corner on the back of each molded part pointing vertically upward.

[0045] The formed parts are arranged in pairs, meaning that the formed parts are arranged in pairs.

[0046] S103: Control the milling cutter to mill the first corner of the pair of forming parts in each column to form the first weld bevel.

[0047] S104: After forming the first welding bevel, each formed part is flipped over and repositioned in pairs on the machine tool so that the sharp corner of the second corner of each formed part is vertically upward.

[0048] S105: Control the milling cutter to mill the second corner of the paired forming parts in each column to form a second weld bevel.

[0049] In the group machining method provided in this embodiment, when machining a rising rack, the method first positions the forming parts in pairs on the machine tool with the sharp corners of the first corners pointing vertically upwards. By controlling the horizontal movement of the milling cutter, the first corners of the pairs of forming parts in the same row can be milled to form a first welding bevel. This allows milling of all forming parts in the same row, greatly improving machining efficiency. After obtaining the first welding bevel, the forming parts are flipped over, with the sharp corners of the first corners pointing vertically upwards. Similarly, by controlling the movement of the milling cutter, the second corners of the pairs of forming parts in the same row can be milled to form a second welding bevel. This allows milling of all forming parts in the same row, greatly improving machining efficiency.

[0050] As can be seen, the above method can mill multiple shaped parts simultaneously, which can greatly improve processing efficiency.

[0051] On the other hand, embodiments of this disclosure also provide another method for group processing of lifting racks, such as... Figure 4 As shown, the group processing method includes:

[0052] S401: Cut the steel plate to obtain the shaped part.

[0053] In this embodiment, a toothed part can be obtained by cutting the steel plate with a laser.

[0054] S402: Position multiple formed parts in pairs on a machine tool to form at least one row.

[0055] Each column includes multiple pairs of molded parts arranged along a first direction, with the two molded parts in a pair arranged symmetrically along a second direction, the first direction being perpendicular to the second direction, and the sharp corner of the first corner on the back of each molded part pointing vertically upward.

[0056] like Figure 5 As shown in the diagram, multiple rows of formed parts can be positioned on the machine tool's worktable.

[0057] The first direction is Figure 5 The middle direction is b. The second direction is... Figure 5 Middle direction a.

[0058] By tilting the forming parts on the positioning machine tool, the first welding bevel of each forming part can be made horizontal. This allows the first corner to be cut horizontally directly by controlling the milling cutter, thus obtaining the first welding bevel and greatly improving processing efficiency.

[0059] Optionally, step S402 is implemented in the following way:

[0060] 4021: Determine the tilt angle of the formed part on the machine tool based on the angle between the first welding slope and the first side of the lifting rack.

[0061] The tilt angle is the angle formed between the first side surface 203 and the worktable surface 110 of the machine tool. The worktable surface 110 is a plane of the machine tool parallel to the ground and used to fix the formed part.

[0062] See you again Figure 3 The included angle α between the first welding bevel 2023 and the first side surface 203 of the lifting rack 200 can be determined according to the specifications and processing requirements of the lifting rack.

[0063] For example, the included angle α between the first welding slope and the first side of the lifting rack 200 can be 45°. Of course, the included angle α can also be other angles. The included angle α can be flexibly set according to the processing requirements of the lifting rack.

[0064] In addition, since the first welding bevel is parallel to the machine tool's worktable, the tilt angle of the lifting rack 200 relative to the worktable 110 can be determined based on the included angle α between the first welding bevel 2023 and the first side of the lifting rack 200.

[0065] Through mathematical calculation, the tilt angle = the included angle α.

[0066] 4022: Position the formed part on the machine tool according to the tilt angle.

[0067] The formed part can be positioned on the machine tool using corresponding clamping tools.

[0068] In this embodiment, a support frame is used to symmetrically position the pairs of formed parts on the machine tool.

[0069] For example, a support frame can be used to make a pair of forming parts and the machine tool form an isosceles triangle. The pair of forming parts correspond to the two legs of the isosceles triangle, and the axis of symmetry of the pair of forming parts is on the axis of the altitude line where the base of the isosceles triangle is located.

[0070] In other words, the above support frame allows for the positioning of two pairs of symmetrical and inclined positioning machine tools.

[0071] like Figure 6 As shown, optionally, the support frame has two symmetrically arranged support planes 100, and the symmetry planes c of the support planes 100 are both perpendicular to the first direction and the second direction. The minimum included angle between the support planes 100 and the symmetry planes c is less than 90°. Two paired molded parts are detachably connected to the support frame and are arranged in a one-to-one correspondence with the two support planes 100, with the first side 203 of each molded part fitting against the corresponding support plane 100.

[0072] In the above implementation, by setting two symmetrically arranged support planes 100 in the support frame, the two forming parts can be supported by the support planes 100 so that the two forming parts can be positioned at an angle on the machine tool.

[0073] like Figure 6 As shown, the support frame includes a base plate 101, two side plates 102, and two wing plates 103. The base plate 101 is detachably connected to the machine tool's worktable. The two side plates 102 are symmetrically connected to the base plate 101 on a surface away from the worktable, and both form a first included angle β with the base plate 101. The first included angle β is the same as the tilt angle. The support plane is the surface of the side plate 102 away from the worktable. The two wing plates 103 correspond one-to-one with the two side plates 102, and are connected to the corresponding side plates 102, forming a defined space 104. The formed part is located in the defined space 104, and the second side of the formed part is attached to and detachably connected to the side plate 102. The teeth 201 of the formed part contact the wing plates 103.

[0074] In the above implementation, the base plate 101 is used for detachable connection with the machine tool's worktable 110 to fix the entire support frame on the machine tool. The side plate 102 is connected to the base plate 101 and provides a mounting base for the forming part to be arranged at an angle. The wing plate 103 is used to connect to the side plate 102 so that the forming part is held in place on the side plate 102 and does not fall off.

[0075] In other words, the above structure can easily position two pairs of formed parts symmetrically and at an angle on a positioning machine tool.

[0076] Of course, the support frame can also have other structures, such as a V-shaped support frame, which includes two interconnected and inclined connecting plates, with the formed part connected to the connecting plates.

[0077] This disclosure does not impose any limitation on the requirement that the support frame can symmetrically and obliquely position the two paired forming parts on the machine tool.

[0078] Optionally, the ends of the two side plates 102 furthest from the base plate 101 are joined together.

[0079] In the above implementation, the ends of the two side plates 102 that are away from the base plate 101 are connected to each other, so that the two side plates 102 and the base plate 101 can form a triangular structure, and the stability of the triangle can make the support frame have high stability.

[0080] Of course, the ends of the two side plates 102 that are away from the base plate 101 may not be connected to each other, but are connected by a plate that is parallel to the base plate 101. This also allows the side plates 102 to be fixed to the base plate 101 at an angle.

[0081] In this embodiment, the base plate 101, the side plate 102, and the corresponding wing plate 103 are all connected together by welding.

[0082] This can further improve the overall stability of the support frame, while also making the support frame easier to manufacture and reducing manufacturing costs.

[0083] Optionally, the first included angle β is 45°, and the two side plates 102 are perpendicular.

[0084] In the above implementation, the first included angle is set to 45° and the two side plates 102 are perpendicular, so that the support frame can form an isosceles right triangle.

[0085] See Figure 7 The support frame is an isosceles supporting triangle, which makes the two side plates 102 symmetrical to each other, and the two wing plates 103 symmetrical to each other. Correspondingly, the formed parts on the side plates 102 will also be arranged symmetrically. Moreover, when the support frame is an isosceles supporting triangle, the first included angle is the included angle α between the two paired formed parts.

[0086] See Figure 8 For ease of connection, the base plate 101 and the machine tool's worktable 110 are detachably connected using bolts or other fasteners. The base plate 101 has through slots 1011 on opposite sides in the second direction. Correspondingly, the worktable 110 has multiple T-slots. One end of the bolt passes through the through slot 1011 on the base plate 101 and is secured to the base plate 101 by a nut or similar device. The other end extends into the T-slot and is secured to the worktable by a nut or similar device.

[0087] See Figure 9 For ease of connection, the molded part is also detachably connected to the side plate 102 using fasteners such as bolts. In this embodiment, the side of the molded part away from the side plate 102 ( Figure 7 A washer is provided on the first side 203 of the forming part, and the bolt is at least partially located between two adjacent teeth in the tooth portion of the forming part. One end of the bolt is limited outside the washer by a nut or the like, and the other end is limited in the side plate 102 by a nut or the like.

[0088] Optionally, in the inclination direction of the side plate 102 relative to the bottom plate 101, the length of the wing plate 103 to the side of the corresponding side plate 102 away from the bottom plate 101 is greater than the thickness of the formed part.

[0089] In the above implementation, along the inclined direction of the side plate 102 relative to the bottom plate 101, the length of the wing plate 103 to the side of the corresponding side plate 102 away from the bottom plate 101 is greater than the thickness of the formed part. This ensures that the two pairs of lifting racks do not interfere with each other, so that the two pairs of lifting racks can be stably positioned on the support frame.

[0090] Optionally, when the forming parts are positioned in pairs behind the machine tool, and the sharp corner of the first corner on the back of each forming part is vertically upward, the distance between the first corners of the pairs of forming parts in the same column is less than the diameter of the milling cutter.

[0091] When the formed parts are positioned in pairs behind the machine tool, and the sharp corner of the second corner on the back of each formed part is vertically upward, the distance between the second corners of the paired formed parts in the same column is less than the diameter of the milling cutter.

[0092] In the above implementation, in order for the milling cutter to simultaneously cut the first corner or the second corner of a pair of forming parts, the distance between the first corners of the pair of forming parts is less than the diameter of the milling cutter, and the distance between the second corners of the pair of forming parts located in the same column is less than the diameter of the milling cutter.

[0093] In other words, when the milling cutter travels along the second direction, it can simultaneously cut the first or second corner of each pair of forming parts in each column, thus forming a first or second welding bevel at the first or second corner of each pair of forming parts in each column.

[0094] In this embodiment, the length of the base plate 101 in the support frame in the first direction is 500mm.

[0095] S403: Position the milling cutter in the nth column and above the first pair of forming parts in the nth column.

[0096] Where n is a positive integer.

[0097] By controlling the machine tool, the milling cutter can be positioned in each column, above the first pair of formed parts in the nth column. This allows for the cutting of each pair of formed parts in that column.

[0098] Additionally, to facilitate the movement of the milling cutter, during machining, the milling cutter can be positioned in the first column (i.e., n=1) and above the first pair of forming parts in the nth column. This allows the forming parts arranged on the worktable to be machined sequentially.

[0099] S404: Control the milling cutter to move along a first direction from the first pair of forming parts in the nth column to the last pair of forming parts in the nth column, so as to mill the first corner of all forming parts in the nth column.

[0100] By controlling the machine tool, the milling cutter can travel along the arrangement direction of the forming parts in each column (that is, the first direction mentioned above), thereby enabling the milling cutter to cut each pair of forming parts in the column, so as to process the first welding bevel in the first corner of each forming part in each column.

[0101] S405: Control the milling cutter to move along the second direction so that the milling cutter is located in the (n+1)th column and directly above the last pair of forming parts in the (n+1)th column.

[0102] After the milling cutter finishes machining the forming parts in the nth column, it can be controlled to move along the first direction, positioning itself above the forming parts in the (n+1)th column at the tail end. This allows the milling cutter to machine each forming part sequentially, from beginning to end.

[0103] S406: Control the milling cutter to move along a first direction from the last pair of forming parts in column n+1 to directly above the first pair of forming parts in column n+1, so as to mill the first corner of all forming parts in column n+1.

[0104] Repeat the above steps

[0105] In other words, the milling cutter first processes the forming parts in the first column, then moves above the forming parts in the second column. After processing the forming parts in the second column, the milling cutter can be positioned above the forming parts in the third column and moves above the forming parts in the third column until all forming parts are processed.

[0106] The movement trajectory of the milling cutter can be serpentine.

[0107] S407: Flip over each of the formed parts that form the first welding bevel and reposition them at an angle in the defined space, so that the sharp corner of the second corner of each formed part is vertically upward.

[0108] After the first welding bevel is machined on the first corner of each formed part, each formed part is flipped over so that the second welding bevel corresponding to the second welding bevel to be formed in the second corner is in a horizontal state, which makes it convenient for the milling cutter to perform milling.

[0109] Of course, the flipped-over shape is also fixed to the second side plate by bolts and other fasteners.

[0110] In this embodiment, each molded part is rotated 180 degrees and repositioned in a defined space. The first side of the molded part is attached to the side plate, the rotation axis m of the molded part is parallel to the first side and the second side of the molded part, and the first corner and the second corner are symmetrical about the rotation axis.

[0111] This ensures that after the part is flipped over, the second corner is directly opposite the milling cutter.

[0112] See Figure 10 After the first welding bevel is formed, each formed part is flipped over and repositioned on the support frame so that the second welding bevel is in a horizontal state.

[0113] S408: Control the milling cutter to mill the second corner of the paired forming parts in each row to form a second weld bevel.

[0114] When milling the second corner, the milling cutter operates in the same way as when milling the first corner. That is, the cutter first processes the first column of formed parts, then moves above the second column of formed parts, controlling its movement above them. After processing the second column, the cutter is positioned above the third column of formed parts and moves there until all formed parts are processed. The cutter's movement trajectory can be serpentine.

[0115] In this embodiment, the movement trajectory of the milling cutter can be automatically controlled by a CNC program.

[0116] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A method for group processing of lifting racks, characterized in that, The group processing method includes: A steel plate is cut to obtain a shaped part, the shaped part including a toothed part and a back part, the toothed part and the back part being arranged opposite to each other, the back part including a first corner and a second corner, the first corner and the second corner being arranged at intervals in the thickness direction of the shaped part; Multiple formed parts are positioned in pairs on a machine tool to form at least one column, each column including multiple pairs of formed parts arranged along a first direction, and the two pairs of formed parts are arranged symmetrically along a second direction, the first direction being perpendicular to the second direction; The milling cutter is controlled to mill the first corner of each column of the formed parts to form a first weld bevel; Each of the formed parts after the first welding bevel is flipped over and repositioned in pairs on the machine tool; The milling cutter is controlled to mill the second corner of each column of the formed parts to form a second weld bevel; Positioning the plurality of formed parts in pairs on the machine tool includes: Based on the angle between the first bevel surface corresponding to the first welding bevel and the first side surface of the formed part, the tilt angle of the formed part positioned on the machine tool is determined, and the tilt angle is the angle formed between the first side surface and the worktable surface of the machine tool. According to the tilt angle, the formed part is positioned on the machine tool, wherein a pair of formed parts are symmetrically positioned on the machine tool by a support frame. The support frame has two symmetrically arranged support planes (100). The support frame includes a base plate (101), two side plates (102), and two wing plates (103). The base plate (101) is detachably connected to the machine tool. The two side plates (102) are symmetrically connected to a plate surface of the base plate (101) away from the machine tool, and both form a first included angle with the base plate (101). The included angle is the same as the tilt angle. The supporting plane is a plate surface of the side plate (102) away from the machine tool. The two wing plates (103) correspond one-to-one with the two side plates (102). The wing plate (103) is connected to the corresponding side plate (102) and forms a defined space (104) with the corresponding side plate (102). The formed part is located in the defined space (104). The second side of the formed part is attached to the side plate (102) and detachably connected. The tooth (201) of the formed part contacts the wing plate (103).

2. The group processing method according to claim 1, characterized in that, The molded part further includes a first side and a second side, the first side and the second side are parallel to each other and are both connected between the back and the toothed portion, the first side is perpendicular to the thickness direction of the molded part, and the first side and the back form the first corner portion.

3. The group processing method according to claim 2, characterized in that, Positioning the formed part on the machine tool according to the tilt angle includes: The two molded parts in a pair are detachably connected to the support frame and are arranged in a one-to-one correspondence with the two support planes. The second side of each molded part in the pair is in contact with the corresponding support plane (100).

4. The group processing method according to claim 1, characterized in that, The two side plates (102) are joined together at the ends away from the bottom plate (101).

5. The group processing method according to claim 4, characterized in that, The first included angle is 45°, and the two side plates (102) are perpendicular.

6. The group processing method according to claim 1, characterized in that, When multiple formed parts are positioned in pairs on a machine tool to form at least two rows, the controlled milling cutter mills the first corner of each row of formed parts to form the first weld bevel, including: Move the milling cutter to the nth column and position it directly above the first pair of formed parts in the nth column; The milling cutter is controlled to move along the first direction from the first pair of two forming parts in the nth column to the last pair of two forming parts in the nth column, so as to mill the first corner of all the forming parts in the nth column; Control the milling cutter to move along the second direction, such that the milling cutter is located in the (n+1)th column and directly above the last pair of the formed parts in the (n+1)th column; The milling cutter is controlled to move along the first direction from the last pair of the forming parts in the (n+1)th column to directly above the first pair of the forming parts in the (n+1)th column, so as to mill the first corner of all the forming parts in the (n+1)th column; Repeat the above steps; Where n is a positive integer.

7. The group processing method according to claim 1, characterized in that, The step of flipping over each of the formed parts after the first welding bevel has been formed, and then repositioning them in pairs on the machine tool at an angle, includes: After each of the molded parts is rotated 180 degrees, it is repositioned on the support frame, and the first side of the molded part is attached to the side plate.

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