Ultra-thin metal sheet clamping machining mechanism and machining apparatus

Abstract

In the solution of the present application, by sequentially disposing a movable plate (positioning plate), a pressing member, and an abutting member and by disposing an elastic device, a to-be-machined ultra-thin metal sheet can be adaptively pressed and fixed to provide an operation condition for machining of the ultra-thin metal sheet. In the solution of the present application, based on the above solution, a handwheel and a fixed plate are additionally disposed to reduce disassembly actions of the pressing member and the movable plate, and a gap for placing the to-be-machined ultra-thin metal sheet can be adjusted through rotation of the handwheel, thereby improving the working efficiency and the production efficiency. In the solution of the present application, a right side of a machining region is provided with a space, which facilitates chip removal and saves costs.

Description

Cross-Reference to Related Applications

[0001] The present application claims priorities to Chinese Patent Application No. 202410728928.5, filed with the China National Intellectual Property Administration on June 5, 2024 and entitled "CLAMPING MACHINING MECHANISM FOR ULTRA-THIN METAL SHEET", and Chinese Patent Application No. 202310683094.6, filed with the China National Intellectual Property Administration on June 9, 2023 and entitled "MACHINING APPARATUS FOR ULTRA-THIN METAL SHEET", which are incorporated herein by reference in their entirety.Technical Field

[0002] The present application relates to the technical field of machining, and particularly to a clamping machining mechanism and machining apparatus for an ultra-thin metal sheet.Background Art

[0003] The concept of ultra-thin metal sheets stems from ultra-thin precision strip steel. Different from the thickness of conventional stainless-steel thin sheets, stainless-steel strip steel with a thickness ≤ 0.3 mm and as thin as 0.01 mm is generally called ultra-thin precision strip steel, which belongs to the field of stainless-steel specialization. The definition of "ultra-thin" thickness in ultra-thin metal sheets is similar to this. Re-machining the surfaces of the ultra-thin metal sheets is inherently challenging. Machining the ultra-thin metal sheets presents the following technical obstacles: Traditional methods, specifically the locking by the screw and the pressure applying for fixation by the pressing plate, cannot be used.

[0004] For example, the Chinese patent application with publication No. CN219542413U discloses a steel cutting clamp, comprising a base, wherein two positioning assemblies are disposed at intervals on the base, each of the positioning assemblies comprises a base body and a cover body rotatably connected to the base body, a first limiting block is disposed on the base body, one side of the first limiting block close to the cover body is provided with a first contour groove, a movable second limiting block and a first elastic member driving the second limiting block to be close to the first limiting block are disposed on the cover body, the second limiting block is provided with a second contour groove communicated with the first contour groove, a rotatable locking rod is also disposed on the cover body, a limiting rod perpendicular to the locking rod is disposed at one end of the locking rod close to the base body, the base body is provided with a locking plate and a locking hole penetrating the locking plate, the locking hole allows one end of the locking rod provided with the limiting rod to pass through the locking plate, a second elastic member is also sleeved on the locking rod, and after the limiting rod passes through the locking hole, the second elastic member drives the limiting rod to move toward a direction close to the locking plate and abut against the locking plate. In this patent, the locking by the locking rod and the pressure applying for fixation by the limiting block are the traditional methods mentioned above. This method is suitable for thicker materials, such as steel or thicker sheets. However, when machining the ultra-thin metal sheets, this traditional clamping method can exert excessive clamping force on the ultra-thin metal sheets, causing deformation or surface wear of the ultra-thin metal sheets.

[0005] In addition, the Chinese patent with publication No. CN219052473U, filed by the applicant on October 13, 2022, discloses a production line of a superfine seamless metal pipe, comprising: a material rack, a feeding mechanism, a first positioning mechanism, a pre-pressing mechanism, a second positioning mechanism, a forming mechanism, a third positioning mechanism, and a welding mechanism, to produce a seamless metal pipe. Rolled metal sheets are used as raw production materials. The ultra-thin metal sheet is irregularly shaped. The thinnest end of the metal sheet is not less than 0.02 mm and not more than 0.3 mm, and the thickest end of the metal sheet is not less than 0.05 mm and not more than 0.5 mm. There is a uniform thickness transition interval between the thickest end and the thinnest end. Therefore, the machining device requires high precision, which has not been domestically produced currently. Although such irregularly shaped metal sheets can be produced abroad, the production processes thereof are not publicly available.

[0006] Therefore, the machining apparatus for the ultra-thin metal sheet in the prior art still needs to be improved.Summary of the Invention

[0007] In view of the above technical deficiencies, the present application provides a clamping machining mechanism for an ultra-thin metal sheet. The objectives of the present application are achieved as follows: A clamping machining mechanism for an ultra-thin metal sheet, comprising: a mould, a pressing device, a cutting tool, and a cutting tool driving mechanism, wherein the mould comprises an abutting member and a mould base that are fixedly connected to each other and sequentially disposed; the pressing device comprises a pressing member and an adjusting device, the pressing member presses the ultra-thin metal sheet against the abutting member through the adjusting device, and the adjusting device comprises an elastic device providing an adaptive elastic deformation force for machining of the ultra-thin metal sheet; a channel extending and penetrating in a left-right direction is formed between the pressing member and the abutting member jointly, and the channel comprises an inlet end allowing the metal sheet to enter and an outlet end allowing the metal sheet to exit; and a number of the pressing devices is at least one, one end surface of the pressing member of the pressing device is located at a feeding inlet end of the channel, the other end surface opposite the end surface is adjacent to a machining region of the ultra-thin metal sheet, the ultra-thin metal sheet enters the machining region of the ultra-thin metal sheet after exiting from the end surface of the pressing device, and the cutting tool is driven by the cutting tool driving mechanism to approach the machining region of the ultra-thin metal sheet and machine the ultra-thin metal sheet. Preferably, the adjusting device also comprises a movable plate and a connecting device, the movable plate, the pressing member, and the abutting member are sequentially connected through the connecting device, the elastic device comprises a spring, the spring is disposed between the movable plate and the pressing member, and a pre-tightening force of the spring is preset by adjusting a distance between the movable plate and the pressing member.

[0008] Preferably, the pressing member is a pressing plate or pressing plate combination, and the abutting member is a base plate.

[0009] Preferably, an end surface of the pressing plate or pressing plate combination adjacent to the machining region of the ultra-thin metal sheet is provided with an inclined arc surface or cutting tool groove used for placing the cutting tool, the inclined arc surface or cutting tool groove is provided with a machining window, and the machining window is communicated with the channel at which a to-be-machined ultra-thin metal sheet is located; and the machining window is the machining region of the ultra-thin metal sheet, and the cutting tool can be driven by the cutting tool driving mechanism to approach the machining window from the inclined arc surface or cutting tool groove.

[0010] Preferably, the connecting device comprises a connecting body and a locking member.

[0011] Preferably, the connecting body is a connecting column, the locking member is a nut, the connecting column is connected by penetrating the movable plate and the pressing member, and the nut screws the movable plate and the connecting column through rotation.

[0012] Preferably, the adjusting device also comprises a handwheel and a fixed plate, the fixed plate is fixedly connected to the front of the movable plate, a threaded adjusting column is fixedly connected to the handwheel, a nut is disposed in the fixed plate, the threaded adjusting column is rotatably connected to the nut, and the threaded adjusting column is rotatably connected to the movable plate.

[0013] Preferably, the pressing plate comprises a first pressing plate, upper and lower portions of the first pressing plate are provided with through holes, respectively, the base plate is fixedly connected to the connecting column, the through holes correspond to the connecting column, the first pressing plate is movably connected to the base plate through the through holes, and a flat surface or a groove is disposed between the through holes of the first pressing plate.

[0014] Preferably, the pressing plate combination comprises a second pressing plate and a third pressing plate, the second pressing plate and the third pressing plate are sequentially disposed, a spring is disposed between the second pressing plate and the third pressing plate, upper and lower portions of the second pressing plate are provided with through holes, upper and lower portions of the third pressing plate are also provided with through holes, the base plate is fixedly connected to the connecting column, the through holes correspond to the connecting column, both the second pressing plate and the third pressing plate are movably connected to the base plate through the through holes, and a groove is formed between the through holes of the third pressing plate.

[0015] Preferably, the connecting body is a connecting plate, the locking member is a screw, edges of the movable plate and the pressing plate or pressing plate combination are provided with connecting grooves, the connecting plate is connected by being embedded in the connecting grooves, and the screw implements fixation of a connection.

[0016] Preferably, the pressing member is a pressing plate or pressing plate combination, the abutting member is a rear-end roller, the connecting device comprises a connecting column, a nut, and a ball bearing, the movable plate, the pressing member, and the rear-end roller are sequentially connected through penetration of the connecting column, the nut screws the movable plate and the connecting column through rotation, and upper and lower end shafts of the rear-end roller are vertically disposed through the ball bearing.

[0017] Preferably, the adjusting device also comprises a positioning plate and a connecting device, the positioning plate, the pressing member, and the abutting member are sequentially connected through the connecting device, and the spring is disposed between the pressing member and the abutting member.

[0018] Preferably, the connecting device comprises a threaded column, a nut, a sliding block, a ball bearing, and a bracket, the pressing member is a front-end roller, the abutting member is a rear-end roller, upper and lower end shafts of the rear-end roller are disposed in the bracket through the ball bearing to implement fixation, upper and lower end shafts of the front-end roller are disposed in the sliding block through the ball bearing, the sliding block is disposed in a groove disposed in the bracket, one side of the sliding block abuts against the spring, an opposite side of the one side of the sliding block abuts against one end of the threaded column penetrating the positioning plate, and the nut spirally locks the other end of the threaded column with the positioning plate.

[0019] Preferably, the connecting device comprises a threaded column, a nut, a sliding block, a ball bearing, and a bracket, the pressing member is a front-end roller, the abutting member is a base plate, upper and lower end shafts of the front-end roller are disposed in the sliding block through the ball bearing, the sliding block is disposed in a groove disposed in the bracket, one side of the sliding block abuts against the spring, an opposite side of the one side of the sliding block abuts against one end of the threaded column penetrating the positioning plate, and the nut spirally locks the other end of the threaded column with the positioning plate.

[0020] In the solution of the present application, by sequentially disposing the movable plate (positioning plate), the pressing member, and the abutting member and by disposing the elastic device, the to-be-machined ultra-thin metal sheet can be adaptively pressed and fixed, to provide an operation condition for machining of the ultra-thin metal sheet.

[0021] In the solution of the present application, the pressing device can be only disposed at a position before the ultra-thin metal sheet is processed, and the pressing device does not need to be disposed at a region after the ultra-thin metal sheet is processed, so that the objective of adaptively clamping the ultra-thin metal sheet can be implemented. In addition, there can be only one pressing device disposed, thereby further saving manufacturing costs.

[0022] In the solution of the present application, based on the above solution, the handwheel and the fixed plate are additionally disposed, to reduce disassembly actions of the pressing member and the movable plate, and a gap for placing the to-be-machined ultra-thin metal sheet can be adjusted through rotation of the handwheel, thereby improving the working efficiency and the production efficiency.

[0023] In the solution of the present application, the cutting tool groove and the machining window can ensure that a larger region of the sheet is pressed to the greatest extent while providing a machining space for the ultra-thin metal sheet, thereby facilitating reduction of vibration problems caused by machining of the ultra-thin metal sheet. The machining window is communicated with the gap (groove), which facilitates chip removal.

[0024] To solve the above technical problems, the present application also provides a machining apparatus for an ultra-thin metal sheet, which can be used for machining the metal sheet described in the background art and has high precision.

[0025] The technical solution adopted in the present application to solve the problems is as follows: a machining apparatus for an ultra-thin metal sheet, comprising a machine platform, wherein a machining mechanism is disposed on the machine platform; and also comprising a mould, wherein the mould is internally provided with a through groove extending in a left-right direction, and the through groove is used for placing a cut sheet; the mould is provided with a U-shaped groove, a machining window is disposed at a position of the U-shaped groove close to the through groove, the machining window is communicated with the through groove, the machining mechanism comprises a cutting tool driving mechanism and a cutting tool, the cutting tool is located at the U-shaped groove, and the cutting tool is partially disposed at the machining window.

[0026] As a further improvement of the above technical solution, the mould comprises a base plate and a mould base that are fixedly connected to each other and a pressing plate, the mould base is vertically disposed on the machine platform, the pressing plate is disposed on a front side of the base plate, the through groove is disposed on a front side wall of the base plate, the U-shaped groove and the machining window are disposed on the pressing plate, the cutting tool is in a shape of a spindle or gourd disposed vertically, the pressing plate is used for pressing the sheet, and the cutting tool machines the sheet.

[0027] As a further improvement of the above technical solution, a ventilation groove is disposed in the middle of the base plate, the ventilation groove is located on one side of the through groove away from the cutting tool, the ventilation groove is provided with a ventilation hole, the ventilation hole is communicated with the through groove, a negative pressure device is also included, a suction port of the negative pressure device is disposed at the ventilation groove, and when commenced, the negative pressure device vacuumizes the ventilation groove and sucks the sheet through the ventilation hole, to prevent the sheet from deviation during machining.

[0028] As a further improvement of the above technical solution, both a number of the U-shaped grooves and a number of the ventilation grooves are two or more, and a cutting machine can machine the sheet for a plurality of times.

[0029] As a further improvement of the above technical solution, an adjusting mechanism is disposed on the pressing plate, the adjusting mechanism is used for adjusting a size of a gap between the pressing plate and the base plate, and machining of sheets with different thicknesses is facilitated by adjusting the gap between the pressing plate and the base plate.

[0030] As a further improvement of the above technical solution, the adjusting mechanism comprises a fixed plate, a movable plate, and a handwheel, the movable plate is disposed on a front side of the pressing plate and has a certain distance from the pressing plate, the fixed plate is disposed on a front side of the movable plate, a threaded adjusting column is fixedly connected to the handwheel, a nut is disposed in the fixed plate, the threaded adjusting column is in transmission connection with the nut, the threaded adjusting column is rotatably connected to the movable plate, and a spring is disposed between the movable plate and the pressing plate.

[0031] As a further improvement of the above technical solution, the pressing plate comprises a first pressing plate, a second pressing plate, and a third pressing plate, and rear side walls of the first pressing plate, the second pressing plate, and the third pressing plate are sequentially arranged from top to bottom; and the first pressing plate, the second pressing plate, and the third pressing plate are all in sliding fit with the threaded adjusting column, and a front end of the first pressing plate, a front end of the second pressing plate, and a front side of the third pressing plate are all provided with springs.

[0032] As a further improvement of the above technical solution, the mould comprises a base plate and a mould base that are fixedly connected to each other and a pressing plate, the mould base is horizontally disposed on the machine platform, the cutting tool is in a shape of a spindle or gourd disposed horizontally, the sheet can move laterally in a horizontal direction, and the sheet is machined by the cutting machine.

[0033] The beneficial effects of the present application are as follows: the sheet passes through the through groove, the machining window is disposed at the through groove, and the cutting tool is partially disposed at the machining window. Due to the limitation of the machining window, when the cutting tool is mounted, it is easy to detect the mounting precision of the cutting tool and control the distance between the cutting tool and the machined sheet. At the same time, the metal sheet is pressed due to the limitation of the window and the mould, thereby effectively controlling the sheet deviation caused by the inability to fix the machined ultra-thin metal sheet and solve the problem of machining vibration. The machining precision and yield rate are improved to achieve precise cutting of the metal sheet. The metal sheet in the present application can also be a coil that is sheet-shaped but stored in rolls.Brief Description of the Drawings

[0034] The present application is further explained with reference to the accompanying drawings and specific implementations. FIG. 1 is a right view of Embodiment 1 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 2 is a top perspective view of an improved solution of Embodiment 1 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 3a is a top perspective view of Embodiment 2 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 3b is a bottom perspective view of an improved solution of Embodiment 2 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 4 is a right view of another improved solution of Embodiment 2 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 5 is a right view of Embodiment 3 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 6a is a top perspective view of Embodiment 3 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 6b is a bottom perspective view of an improved solution of Embodiment 3 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 7 is a right view of Embodiment 4 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 8a is a top perspective view of Embodiment 4 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 8b is a bottom perspective view of an improved solution of Embodiment 4 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 9 is a partial three-dimensional diagram of Embodiment 5 of a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 10 is a bottom perspective view of Embodiment 6 of a pressing device in a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 11a is a front view of a pressing plate in contact with an ultra-thin metal sheet of Embodiment 6 according to the present application; FIG. 11b is a bottom sectional view of a pressing plate in contact with an ultra-thin metal sheet of Embodiment 6 according to the present application; FIG. 11c is a three-dimensional diagram of a pressing plate in contact with an ultra-thin metal sheet of Embodiment 6 according to the present application; FIG. 12 is a partial three-dimensional diagram of Embodiment 7 of a clamping machining mechanism for an ultra-thin metal sheet according to the present application; FIG. 13 is a front view of a machining apparatus for an ultra-thin metal sheet according to the present application; FIG. 14a is a partially enlarged view 1 of a part A in FIG. 13; FIG. 14b is a partially enlarged view 2 of a part A in FIG. 13; FIG. 15 is a partially enlarged view of a part B in FIG. 10; FIG. 16 is a bottom perspective view of an alternative solution according to the present application; FIG. 17 is a partially enlarged view of an alternative solution according to the present application; FIG. 18 is a top view of a machining apparatus for an ultra-thin metal sheet according to the present application; FIG. 19 is a partially enlarged view of a part B in FIG. 18; FIG. 20 is a right view of a machining apparatus for an ultra-thin metal sheet according to the present application; FIG. 21 is a front view of another embodiment of a machining apparatus for an ultra-thin metal sheet according to the present application; FIG. 22 is a schematic diagram of one implementation of a cutting tool according to the present application; and FIG. 23 is a schematic diagram of another implementation of a cutting tool according to the present application. Detailed Description of Embodiments

[0035] To make the objectives, technical solutions, and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings. The described embodiments should not be considered as limiting the present application, and all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0036] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments; however, it may be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0037] Unless otherwise stated, the directional terms such as "upper" and "lower" generally refer to the directions shown in the accompanying drawings.

[0038] The present application provides a clamping machining mechanism for an ultra-thin metal sheet, comprising: a mould, a pressing device, a cutting tool, and a cutting tool driving mechanism, wherein the mould comprises an abutting member and a mould base that are fixedly connected to each other and sequentially disposed; the pressing device comprises a pressing member and an adjusting device, the pressing member presses the ultra-thin metal sheet against the abutting member through the adjusting device, the adjusting device comprises an elastic device providing an adaptive elastic deformation force for machining of the ultra-thin metal sheet, and the elastic device comprises a spring; a through groove extending and penetrating in a left-right direction is formed between the pressing member and the abutting member jointly, and the through groove comprises an inlet end allowing the metal sheet to enter and an outlet end allowing the metal sheet to exit; and a number of the pressing devices is at least one, one end surface of the pressing member of the pressing device is located at a feeding inlet end of the through groove, the other end surface opposite the end surface is adjacent to a machining region of the ultra-thin metal sheet, the ultra-thin metal sheet enters the machining region of the ultra-thin metal sheet after exiting from the end surface of the pressing device, and the cutting tool is driven by the cutting tool driving mechanism to approach the machining region of the ultra-thin metal sheet and machine the ultra-thin metal sheet. The adjusting device also comprises a movable plate (fixed plate) and a connecting device, the movable plate (fixed plate), the pressing member, and the abutting member are sequentially connected through the connecting device, the spring is disposed between the movable plate and the pressing member, and a pre-tightening force of the spring is preset by adjusting a distance between the movable plate and the pressing member.

[0039] In some embodiments, the elastic device comprises the spring. After a machining clamping unit for the ultra-thin metal sheet clamps the ultra-thin metal sheet, the spring can provide the elastic deformation force to give the ultra-thin metal sheet a certain adaptive pressing force. In some other embodiments, the elastic device may also comprise an elastic body other than the spring, such as curled and superimposed metal wires, or use changes in air pressure to provide a pressing force, etc. In short, an adaptive pressing force can be provided for the ultra-thin metal sheet.Embodiment 1

[0040] This embodiment provides specific structures of a pressing device and a mould in a clamping machining mechanism for an ultra-thin metal sheet. As shown in FIG. 1, FIG. 1 is a right view of this embodiment.

[0041] A pressing device comprises a pressing member and an adjusting device, the pressing member presses the ultra-thin metal sheet against an abutting member through the adjusting device, and the adjusting device comprises an elastic device providing an adaptive elastic deformation force for machining of the ultra-thin metal sheet.

[0042] The elastic device is a spring 64, the adjusting device also comprises a movable plate 621 and a connecting device, the movable plate 621, the pressing member, and the abutting member are sequentially connected through the connecting device, and the spring 64 is disposed between the movable plate 621 and the pressing member. The pressing member is a pressing plate, and the abutting member is a base plate 441. The connecting device comprises a connecting body and a locking member, the connecting body is a connecting column 661, the locking member is a nut 671, the connecting column 661 is connected through penetration, and the nut 671 screws the movable plate and the connecting column 661 through rotation.

[0043] The pressing plate comprises a first pressing plate 451, upper and lower portions of the first pressing plate 451 are provided with through holes, the base plate 441 is fixedly connected to the connecting column 661, the through holes correspond to the connecting column 661, the first pressing plate 451 is movably connected to the base plate 441 through the through holes, and a flat surface or a groove is disposed between the through holes of the first pressing plate 451. A through groove 41 is disposed between the first pressing plate 451 and the base plate 441, and the through groove 41 is used for placing the ultra-thin metal sheet.Using steps:

[0044] The movable plate 621, the spring 64, and the pressing plate are separated from the base plate 441 and the connecting column 661, a to-be-machined ultra-thin metal sheet is placed in the through groove 41, and then, after the connecting column 661 passes through the corresponding through hole and the spring 64 of the first pressing plate 451, the nut 671 screws the movable plate and the connecting column through rotation to complete fixation and pressing of the to-be-machined ultra-thin metal sheet. The spring 64 can provide a changing force through deformation, to adapt to the loading of the to-be-machined ultra-thin metal sheet and the unloading of the machined ultra-thin metal sheet.

[0045] In some other embodiments, an inclined arc surface or a cutting tool groove used for placing the cutting tool is formed on the pressing plate, the inclined arc surface or the cutting tool groove is provided with a machining window, and the machining window is communicated with the through groove 41 at which the to-be-machined ultra-thin metal sheet is located.

[0046] In some other embodiments, the connecting body is a connecting plate 662, the locking member is a screw 672, edges of the movable plate 621 and the pressing plate or pressing plate combination are provided with connecting grooves, the connecting plate 662 is connected by being embedded in the connecting grooves, and the screw 672 implements fixation of the connection, as shown in FIG. 2. This is also generally called a side locking device in the art.

[0047] In some other embodiments, the locking member can also be implemented in other specific manners. For example, a clamp or a machine workbench provides a corresponding locking force.

[0048] In some other embodiments, the pressing member is a pressing plate combination, which is not shown in the figure.Embodiment 2

[0049] This embodiment differs from Embodiment 1 in that an abutting member is a rear-end roller, and a connecting device also comprises a ball bearing 681. Upper and lower end shafts of the rear-end roller are vertically disposed ("vertical" is a direction compared to a front view of a machining clamping unit for an ultra-thin metal sheet) through the ball bearing 681. FIG. 3a shows a top perspective view thereof.

[0050] In some other embodiments, an end surface of a first pressing plate 451 adjacent to a machining region of the ultra-thin metal sheet is provided with an inclined arc surface for positioning a cutting tool. The inclined arc surface is formed from an upper surface of the pressing plate toward a lower surface of the pressing plate (the upper surface and the lower surface here are relative to an up-and-down direction shown in FIG. 3b). The cutting tool 31 can be placed at the inclined arc surface, the inclined arc surface is provided with a machining window, and the machining window is communicated with a through groove at which a to-be-machined ultra-thin metal sheet is located. The machining window is the machining region of the ultra-thin metal sheet, and the cutting tool 31 can be driven by a cutting tool driving mechanism to approach the machining window from the inclined arc surface. FIG. 3b shows a bottom perspective view thereof.

[0051] In some other embodiments, the pressing member is a pressing plate combination 450, and the abutting member is a rear-end roller 442, as shown in FIG. 4.Embodiment 3

[0052] FIG. 5 and FIG. 6a show specific structures of a pressing device and a mould in a clamping machining mechanism for an ultra-thin metal sheet. The pressing device comprises a pressing member and an adjusting device, the pressing member presses the ultra-thin metal sheet against an abutting member through the adjusting device, and the adjusting device comprises an elastic device providing an adaptive elastic deformation force for machining of the ultra-thin metal sheet.

[0053] The elastic device is a spring 64, the adjusting device also comprises a positioning plate 622 and a connecting device, the positioning plate 622, the pressing member, and the abutting member are sequentially connected through the connecting device, and the spring 64 is disposed between the pressing member and the abutting member.

[0054] The connecting device comprises a threaded column, a nut, a sliding block 682, a ball bearing 681, and a bracket 69, the pressing member is a front-end roller 4502, the abutting member is a rear-end roller 442, upper and lower end shafts of the rear-end roller 442 are disposed in the bracket 69 through the ball bearing 681 to implement fixation, upper and lower end shafts of the front-end roller 452 are disposed in the sliding block 682 through the ball bearing 681, the sliding block 682 is disposed in a groove disposed in the bracket 69, one side of the sliding block 682 abuts against the spring 64, an opposite side of the one side of the sliding block 682 abuts against one end of the threaded column penetrating the positioning plate, and the nut spirally locks the other end of the threaded column with the positioning plate 622.

[0055] In some other embodiments, an end surface of the bracket 69 adjacent to a machining region of the ultra-thin metal sheet is provided with an inclined arc surface for positioning a cutting tool. The inclined arc surface is formed from an upper surface of the bracket 69 toward a lower surface of the bracket (the upper surface and the lower surface herein are relative to an up-and-down direction shown in FIG. 6b). The cutting tool 31 can be placed on the inclined arc surface, the inclined arc surface is provided with a machining window, and the machining window is communicated with a through groove at which a to-be-machined ultra-thin metal sheet is located. The machining window is the machining region of the ultra-thin metal sheet, and the cutting tool 31 can be driven by a cutting tool driving mechanism to approach the machining window from the inclined arc surface. FIG. 6b shows a bottom perspective view thereof.Embodiment 4

[0056] As shown in FIG. 7, FIG. 8a, and FIG. 8b, this embodiment differs from Embodiment 3 in that an abutting member is a base plate 441.Embodiment 5

[0057] As shown in FIG. 9, this embodiment provides a specific structure of a solution of a clamping machining mechanism for an ultra-thin metal sheet, comprising one pressing device in Embodiment 3. There is a machining region on a right side of the pressing device, and a machining tool such as a cutting tool 31, is correspondingly disposed in the region. There is a space on a right side of the machining region, which facilitates chip removal.

[0058] In this embodiment, a pressing member is a front-end roller 4502, and an abutting member is a rear-end roller 442, so that the ultra-thin metal sheet is less likely to be scratched. However, a blade of the cutting tool is at a certain distance from a contact region at which the roller presses the ultra-thin metal sheet, which is not conducive to controlling the vibration of the sheet when the ultra-thin metal sheet is machined.Embodiment 6

[0059] A clamping machining mechanism for an ultra-thin metal sheet comprises: a mould, a pressing device, a cutting tool, and a cutting tool driving mechanism, and the mould comprises an abutting member and a mould base that are fixedly connected to each other and sequentially disposed; the pressing device comprises a pressing member and an adjusting device, the pressing member presses the ultra-thin metal sheet against the abutting member through the adjusting device, the adjusting device comprises an elastic device providing an adaptive elastic deformation force for machining of the ultra-thin metal sheet, and the elastic device comprises a spring; a through groove extending and penetrating in a left-right direction is formed between the pressing member and the abutting member jointly, and the through groove comprises an inlet end allowing the metal sheet to enter and an outlet end allowing the metal sheet to exit; and a number of the pressing devices is one, one end surface of the pressing member of the pressing device is located at a feeding inlet end of the through groove, the other end surface opposite the end surface is adjacent to a machining region of the ultra-thin metal sheet, the ultra-thin metal sheet enters the machining region of the ultra-thin metal sheet after exiting from the end surface of the pressing device, and the cutting tool is driven by the cutting tool driving mechanism to approach the machining region of the ultra-thin metal sheet and machine the ultra-thin metal sheet.

[0060] The adjusting device also comprises a movable plate and a connecting device, the movable plate, the pressing member, and the abutting member are sequentially connected through the connecting device, the spring is disposed between the movable plate and the pressing member, and a pre-tightening force of the spring is preset by adjusting a distance between the movable plate and the pressing member. This embodiment provides specific structures of the pressing device and the mould in the clamping machining mechanism for an ultra-thin metal sheet, as shown in FIG. 10.

[0061] The elastic device comprises the spring 64, the adjusting device also comprises the movable plate 621 and the connecting device, the movable plate 621, the pressing member, and the abutting member are sequentially connected through the connecting device, and the spring 64 is disposed between the movable plate 621 and the pressing member.

[0062] The pressing member is a pressing plate, and the abutting member is a base plate 441. The connecting device comprises a connecting body and a locking member, the connecting body is a connecting column 661, the locking member is a nut 671, the connecting column 661 is connected through penetration, and the nut 671 screws the movable plate and the connecting column through rotation.

[0063] The adjusting device also comprises a handwheel 63 and a fixed plate 61, the fixed plate 61 is fixedly connected to the front of the movable plate 621, a threaded adjusting column 65 is fixedly connected to the handwheel 63, a nut is disposed in the fixed plate 61, the threaded adjusting column 65 is rotatably connected to the nut, and the threaded adjusting column 65 is rotatably connected to the movable plate 621.

[0064] The pressing plate comprises a first pressing plate 451, upper and lower portions of the first pressing plate 451 are provided with through holes, respectively, the base plate 441 is fixedly connected to the connecting column 661, the through holes correspond to the connecting column 661, the first pressing plate 451 is movably connected to the base plate 441 through the through holes, a flat surface is disposed between the through holes of the first pressing plate 451, a through groove 41 is disposed between the first pressing plate 451 and the base plate 441, and the through groove 41 is used for placing the ultra-thin metal sheet.

[0065] As shown in FIG. 11a, FIG. 11b, and FIG. 11c, an end surface of a first pressing plate 451 adjacent to a machining region of the ultra-thin metal sheet is provided with an inclined arc surface 402 for positioning the cutting tool. The inclined arc surface 402 is formed from an upper surface of the pressing plate toward a lower surface of the pressing plate (the upper surface and the lower surface herein are relative to an up-and-down direction shown in FIG. 11b). The cutting tool 31 can be placed on the inclined arc surface 402, the inclined arc surface 402 is provided with a machining window 421, and the machining window 421 is communicated with the through groove at which a to-be-machined ultra-thin metal sheet is located. The machining window 421 is the machining region of the ultra-thin metal sheet, and the cutting tool 31 can be driven by the cutting tool driving mechanism to approach the machining window from the inclined arc surface 402.Using benefits:

[0066] The ultra-thin metal sheet is disposed in the through groove 41, and a distance between the movable plate 621 and the fixed plate 61 is adjusted by rotating the handwheel 63, thereby adjusting a distance between the movable plate 621 and the pressing plate, so that the pressing plate limits and squeezes the ultra-thin metal sheet, to prevent the ultra-thin metal sheet from falling off from the through groove 41 and prevent the ultra-thin metal sheet from vibrating. The cutting tool 31 extends into the inclined arc surface 402, and the cutting tool 31 partially passes through the machining window 421 and abuts against the ultra-thin metal sheet to machine the sheet. The design of the inclined arc surface 402 enables the ultra-thin metal sheet to be pressed over the largest possible area when being machined, thereby avoiding the problem of vibration during machining of the ultra-thin metal sheet. A right side of the cutting tool 31 is empty and has no device disposed, which is conducive to chip removal and operations of an industrial production line.

[0067] A left end surface of the first pressing plate 451 is located at the feeding inlet end of the through groove, and a right end surface thereof is adjacent to the machining region of the ultra-thin metal sheet (the left end surface and the right end surface herein are relative to a left-and-right direction shown in FIG. 10). The ultra-thin metal sheet enters the machining region of the ultra-thin metal sheet after exiting from the end surface of the pressing device, and the cutting tool is driven by the cutting tool driving mechanism to approach the machining region of the ultra-thin metal sheet and machine the ultra-thin metal sheet. As described above, the machining of the ultra-thin metal sheet is a process that requires feeding and discharging. The elastic device is disposed to solve the problem of sheet pressing and transmission transportation, so that the sheet can be fixed and has a state in which machining can be performed, and a certain adaptive elastic deformation force can be provided for the sheet to enable the sheet to be capable of being transported in and out.

[0068] This embodiment is effective in positioning the ultra-thin metal sheet and has a stronger effect in preventing vibration during the machining of the ultra-thin metal sheet. However, compared with Embodiment 5, the pressing member is easy to scratch the ultra-thin metal sheet.Embodiment 7

[0069] In the solution of the present application, the number of the pressing devices can be two or more. FIG. 12 shows a case of comprising three pressing devices. The pressing device of this embodiment comprises one pressing device described in Embodiment 3, one pressing device described in Embodiment 1, and one pressing device described in Embodiment 3 that are sequentially disposed. A right side of the pressing device described in Embodiment 1 is provided with a machining region, and the region is provided with a cutting tool groove, a machining window, a cutting tool, etc., which is similar to the previous embodiments and is not described in detail again. There is a space between the machining region and the pressing device described in Embodiment 3 located on the rightmost side, which facilitates chip removal.

[0070] A multi-unit combination of this embodiment can effectively reduce friction and is more conducive to protecting the ultra-thin metal sheet.

[0071] The solution of the present application can be used in a machining apparatus for an ultra-thin metal sheet. Referring to FIG. 13, the machining apparatus for an ultra-thin metal sheet comprises a machine platform 1, the machine platform 1 is provided with a machining mechanism 3 and a mould 4, and a mould base 46 of the mould 4 is fixedly mounted on the machine platform 1. The mould 4 is internally provided with a through groove 41 extending in a left-right direction, the through groove 41 is used for placing the ultra-thin metal sheet 2, a ventilation groove 43 is disposed in the middle of the mould 4, and a suction port of a negative pressure device 5 is disposed at the ventilation groove 43. The negative pressure device is commenced to evacuate air in the ventilation groove, so that negative pressure is formed in the ventilation groove, and the sheet can be adsorbed at a ventilation hole, which can also assist in positioning the sheet.

[0072] Referring to FIG. 14b, the mould 4 is provided with an inclined arc surface 402, and the inclined arc surface 402 is provided with a machining window 421.

[0073] Referring to FIG. 15, the through groove 41 and the ventilation groove 43 are disposed on a base plate 441, the inclined arc surface 402 is disposed on a pressing plate 45, the inclined arc surface 402 is located on 8 one side of the through groove 41, and a cutting tool 31 is located at the inclined arc surface 402. The cutting tool 31 is partially disposed at the machining window 421, the ventilation groove 43 is located on one side of the through groove 41 away from the cutting tool 31, the ventilation groove 43 is provided with a ventilation hole 431, and the ventilation hole 431 is communicated with the through groove 41.

[0074] The machining mechanism 3 comprises a cutting tool driving mechanism and the cutting tool 31, the cutting tool 31 is located at the inclined arc surface 402, and the cutting tool 31 is partially located at the machining window 421.

[0075] The mould 4 referred to herein refers to a machining pressing apparatus for an ultra-thin metal sheet provided in the solution of the present application, which is not described in detail again.

[0076] The cutting tool 31 is in a shape of a spindle or gourd disposed vertically.

[0077] In addition, for example, the connecting device in the above embodiments is replaced with an edge locking unit; for example, the first pressing plate 451 in Embodiment 6 is disposed as a thin plate without an inclined arc surface, as shown in FIG. 16. This improved solution is applied to the machining apparatus for an ultra-thin metal sheet shown in FIG. 13, and a partially enlarged view thereof is shown in FIG. 17.

[0078] The solution of the present application also provides a machining apparatus for an ultra-thin metal sheet. Referring to FIG. 13, the machine platform 1 is provided with a machining mechanism 3 and a mould 4, and a mould base 46 of the mould 4 is fixedly mounted on the machine platform 1. The mould 4 is internally provided with a through groove 41 extending in a left-right direction, the through groove 41 is used for placing a cut sheet 2, a ventilation groove 43 is disposed in the middle of the mould 4, and a suction port of a negative pressure device 5 is disposed at the ventilation groove 43. Referring to FIG. 14a, the mould 4 is provided with a U-shaped groove 42, and the U-shaped groove 42 is provided with a machining window 421.

[0079] Referring to FIG. 18, the adjusting mechanism 6 comprises a fixed plate 61, a movable plate 62, and a handwheel 63, the movable plate 62 is disposed on a front side of the pressing plate 45 and has a certain distance from the pressing plate 45, the fixed plate 61 is disposed on a front side of the movable plate 62, a threaded adjusting column 65 is fixedly connected to the handwheel 63, a nut is disposed in the fixed plate 61, the threaded adjusting column 65 is in transmission connection with the nut, the threaded adjusting column 65 is rotatably connected to the movable plate 61, and a spring 64 is disposed between the movable plate 62 and the pressing plate 45.

[0080] Referring to FIG. 19, the through groove 41 and the ventilation groove 43 are disposed on the base plate 44, the U-shaped groove 42 is disposed on the pressing plate 45, the U-shaped groove 42 is located on one side of the through groove 41, and the cutting tool 31 is located at the U-shaped groove 42. The cutting tool 31 is partially disposed at the machining window 421, the ventilation groove 43 is located on one side of the through groove 41 away from the cutting tool 31, the ventilation groove 43 is provided with a ventilation hole 431, and the ventilation hole 431 is communicated with the through groove 41.

[0081] Referring to FIG. 20, the pressing plate 45 comprises a first pressing plate 451, a second pressing plate 452, and a third pressing plate 453, and rear side walls of the first pressing plate 451, the second pressing plate 452, and the third pressing plate 453 are sequentially arranged from top to bottom; and the first pressing plate 451, the second pressing plate 452, and the third pressing plate 453 are all in sliding fit with the threaded adjusting column 65, and a front end of the first pressing plate 451, a front end of the second pressing plate 452, and a front side of the third pressing plate 453 are all provided with springs 64.

[0082] Referring to FIG. 21, in this embodiment, the mould 4 is horizontally disposed on the machine platform 1.

[0083] Referring to FIG. 22, the cutting tool 31 is in a shape of a gourd.

[0084] Referring to FIG. 23, the cutting tool 31 is in a shape of a spindle.Using benefits:

[0085] The sheet 2 is disposed in the through groove 41, and a distance between the movable plate 62 and the fixed plate 62 is adjusted by rotating the handwheel 63, thereby adjusting a distance between the movable plate 62 and the pressing plate 45, so that the pressing plate 45 limits and squeezes the sheet 2, to prevent the sheet 2 from falling off from the through groove 41 and prevent the sheet 2 from vibrating. The negative pressure device 5 is commenced to evacuate air in the ventilation groove 43, so that negative pressure is formed in the ventilation groove 43, and the sheet 2 can be adsorbed at the ventilation hole 431, which can also assist in positioning the sheet 2. The cutting tool 31 extends into the U-shaped groove 42, and the cutting tool 31 partially passes through the machining window 421 and abuts against the sheet 2 to machine the sheet 2.

[0086] The above descriptions are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Under the application concept of the present application, equivalent structural transformations made using the content of the specification and drawings of the present application, or directly or indirectly used in other relevant technical fields are all included in the patent protection scope of the present application.

Claims

1. A clamping machining mechanism for an ultra-thin metal sheet, comprising: a mould, a pressing device, a cutting tool, and a cutting tool driving mechanism, wherein the mould comprises an abutting member and a mould base that are fixedly connected to each other and sequentially disposed; the pressing device comprises a pressing member and an adjusting device, the pressing member presses the ultra-thin metal sheet against the abutting member through the adjusting device, and the adjusting device comprises an elastic device providing an adaptive elastic deformation force for machining of the ultra-thin metal sheet; a through groove extending and penetrating in a left-right direction is formed between the pressing member and the abutting member jointly, and the through groove comprises an inlet end allowing the metal sheet to enter and an outlet end allowing the metal sheet to exit; and a number of the pressing devices is at least one, one end surface of the pressing member of the pressing device is located at a feeding inlet end of the through groove, the other end surface opposite the end surface is adjacent to a machining region of the ultra-thin metal sheet, the ultra-thin metal sheet enters the machining region of the ultra-thin metal sheet after exiting from the end surface of the pressing device, and the cutting tool is driven by the cutting tool driving mechanism to approach the machining region of the ultra-thin metal sheet and machine the ultra-thin metal sheet.

2. The clamping machining mechanism for an ultra-thin metal sheet according to claim 1, wherein the adjusting device also comprises a movable plate and a connecting device, the movable plate, the pressing member, and the abutting member are sequentially connected through the connecting device, the elastic device comprises a spring, the spring is disposed between the movable plate and the pressing member, and a pre-tightening force of the spring is preset by adjusting a distance between the movable plate and the pressing member.

3. The clamping machining mechanism for an ultra-thin metal sheet according to claim 2, wherein the pressing member is a pressing plate or pressing plate combination, and the abutting member is a base plate.

4. The clamping machining mechanism for an ultra-thin metal sheet according to claim 3, wherein an end surface of the pressing plate or pressing plate combination adjacent to the machining region of the ultra-thin metal sheet is provided with an inclined arc surface or cutting tool groove used for placing the cutting tool, the inclined arc surface or the cutting tool groove is provided with a machining window, and the machining window is communicated with the through groove at which a to-be-machined ultra-thin metal sheet is located; and the machining window is the machining region of the ultra-thin metal sheet, and the cutting tool can be driven by the cutting tool driving mechanism to approach the machining window from the inclined arc surface or cutting tool groove.

5. The clamping machining mechanism for an ultra-thin metal sheet according to claim 4, wherein the connecting device comprises a connecting body and a locking member.

6. The clamping machining mechanism for an ultra-thin metal sheet according to claim 5, wherein the connecting body is a connecting column, the locking member is a nut, the connecting column is connected by penetrating the movable plate and the pressing member, and the nut screws the movable plate and the connecting column through rotation.

7. The clamping machining mechanism for an ultra-thin metal sheet according to claim 6, wherein the adjusting device also comprises a handwheel and a fixed plate, the fixed plate is fixedly connected to the front of the movable plate, a threaded adjusting column is fixedly connected to the handwheel, a nut is disposed in the fixed plate, the threaded adjusting column is rotatably connected to the nut, and the threaded adjusting column is rotatably connected to the movable plate.

8. The clamping machining mechanism for an ultra-thin metal sheet according to claim 7, wherein the pressing plate comprises a first pressing plate, upper and lower portions of the first pressing plate are provided with through holes, respectively, the base plate is fixedly connected to the connecting column, the through holes correspond to the connecting column, the first pressing plate is movably connected to the base plate through the through holes, and a flat surface or a groove is disposed between the through holes of the first pressing plate.

9. The clamping machining mechanism for an ultra-thin metal sheet according to claim 8, wherein the pressing plate combination comprises a second pressing plate and a third pressing plate, the second pressing plate and the third pressing plate are sequentially disposed, a spring is disposed between the second pressing plate and the third pressing plate, upper and lower portions of the second pressing plate are provided with through holes, respectively, upper and lower portions of the third pressing plate are also provided with through holes, respectively, the base plate is fixedly connected to the connecting column, the through holes correspond to the connecting column, both the second pressing plate and the third pressing plate are movably connected to the base plate through the through holes, and a groove is formed between the through holes of the third pressing plate.

10. The clamping machining mechanism for an ultra-thin metal sheet according to claim 6, wherein the connecting body is a connecting plate, the locking member is a screw, edges of the movable plate and the pressing plate or pressing plate combination are provided with connecting grooves, the connecting plate is connected by being embedded in the connecting grooves, and the screw implements fixation of a connection.

11. The clamping machining mechanism for an ultra-thin metal sheet according to claim 2, wherein the pressing member is a pressing plate or a pressing plate combination, the abutting member is a rear-end roller, the connecting device comprises a connecting column, a nut, and a ball bearing, the movable plate, the pressing member, and the rear-end roller are sequentially connected through penetration of the connecting column, the nut screws the movable plate and the connecting column through rotation, and upper and lower end shafts of the rear-end roller are vertically disposed through the ball bearing.

12. The clamping machining mechanism for an ultra-thin metal sheet according to claim 1, wherein the adjusting device also comprises a positioning plate and a connecting device, the positioning plate, the pressing member, and the abutting member are sequentially connected through the connecting device, and the spring is disposed between the pressing member and the abutting member.

13. The clamping machining mechanism for an ultra-thin metal sheet according to claim 12, wherein the connecting device comprises a threaded column, a nut, a sliding block, a ball bearing, and a bracket, the pressing member is a front-end roller, the abutting member is a rear-end roller, upper and lower end shafts of the rear-end roller are disposed in the bracket through the ball bearing to implement fixation, upper and lower end shafts of the front-end roller are disposed in the sliding block through the ball bearing, the sliding block is disposed in a groove disposed in the bracket, one side of the sliding block abuts against the spring, an opposite side of the one side of the sliding block abuts against one end of the threaded column penetrating the positioning plate, and the nut spirally locks the other end of the threaded column with the positioning plate.

14. The clamping machining mechanism for an ultra-thin metal sheet according to claim 12, wherein the connecting device comprises a threaded column, a nut, a sliding block, a ball bearing, and a bracket, the pressing member is a front-end roller, the abutting member is a base plate, upper and lower end shafts of the front-end roller are disposed in the sliding block through the ball bearing, the sliding block is disposed in a groove disposed in the bracket, one side of the sliding block abuts against the spring, an opposite side of the one side of the sliding block abuts against one end of the threaded column penetrating the positioning plate, and the nut spirally locks the other end of the threaded column with the positioning plate.

15. A machining apparatus for an ultra-thin metal sheet, comprising a machine platform, wherein a machining mechanism is disposed on the machine platform, a mould is also disposed on the machine platform, the mould is internally provided with a through groove extending in a left-right direction, and the through groove is used for placing a cut sheet; the mould is provided with a U-shaped groove, a machining window is disposed at a position of the U-shaped groove close to the through groove, and the machining window is communicated with the through groove; and the machining mechanism comprises a cutting tool driving mechanism and a cutting tool, the cutting tool is located at the U-shaped groove, and the cutting tool is partially disposed at the machining window.

16. The machining apparatus for an ultra-thin metal sheet according to claim 15, wherein the mould comprises a base plate and a mould base that are fixedly connected to each other and a pressing plate, the mould base is vertically disposed on the machine platform, the pressing plate is disposed on a front side of the base plate, the through groove is disposed on a front side wall of the base plate, and the U-shaped groove and the machining window are disposed on the pressing plate; and the cutting tool is in a shape of a spindle or gourd disposed vertically.

17. The machining apparatus for an ultra-thin metal sheet according to claim 16, wherein a ventilation groove is disposed in the middle of the base plate, the ventilation groove is located on one side of the through groove away from the cutting tool, the ventilation groove is provided with a ventilation hole, and the ventilation hole is communicated with the through groove; and a negative pressure device is also included, and a suction port of the negative pressure device is disposed at the ventilation groove.

18. The machining apparatus for an ultra-thin metal sheet according to claim 17, wherein both a number of the U-shaped grooves and a number of the ventilation grooves are two or more.

19. The machining apparatus for an ultra-thin metal sheet according to claim 18, wherein an adjusting mechanism is disposed on the pressing plate, and the adjusting mechanism is used for adjusting a size of a gap between the pressing plate and the base plate.

20. The machining apparatus for an ultra-thin metal sheet according to claim 19, wherein the adjusting mechanism comprises a fixed plate, a movable plate, and a handwheel; the fixed plate, the movable plate, and the pressing plate are sequentially disposed from front to back; and a threaded adjusting column is fixedly connected to the handwheel, a nut is disposed in the fixed plate, the threaded adjusting column is in transmission connection with the nut, the threaded adjusting column is rotatably connected to the movable plate, and a spring is disposed between the movable plate and the pressing plate.

21. The machining apparatus for an ultra-thin metal sheet according to claim 20, wherein the pressing plate comprises a first pressing plate, a second pressing plate, and a third pressing plate, and rear side walls of the first pressing plate, the second pressing plate, and the third pressing plate are sequentially arranged from top to bottom; and the first pressing plate, the second pressing plate, and the third pressing plate are all in sliding fit with the threaded adjusting column, and a front end of the first pressing plate, a front end of the second pressing plate, and a front side of the third pressing plate are all provided with springs.

22. The machining apparatus for an ultra-thin metal sheet according to claim 15, wherein the mould comprises a base plate and a mould base that are fixedly connected to each other and a pressing plate, the mould base is horizontally disposed on the machine platform, and the cutting tool is in a shape of a spindle or gourd disposed horizontally.

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