Machine tool for automatic processing of profiled springs

Abstract

The application discloses a machine tool for automatically processing profiled springs, which comprises a machine tool frame, a first sliding rail, an inlet channel, an outlet channel and a plurality of clamping devices arranged on the machine tool frame. The first sliding rail is arranged on the machine tool frame and is located close to the inlet channel and the outlet channel at two ends thereof. The clamping devices are arranged on the machine tool frame and above the sliding rail. A folding and bending tool is arranged on the first sliding rail and close to one side of the inlet channel to fold and bend the calcined metal plate. An arc-shaped bending tool is arranged on the first sliding rail to press the folded and bent metal plate into an arc-shaped metal plate. A secondary bending tool is arranged on the first sliding rail and close to one side of the outlet channel to perform secondary bending on the arc-shaped metal plate. The clamping devices sequentially clamp the metal plate from the inlet channel to the outlet channel and place the metal plate in the folding and bending tool, the arc-shaped bending tool and the secondary bending tool. The machine tool has high processing efficiency and low processing risk, and eliminates the disadvantages of high cost, low efficiency and production risk.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automatic processing equipment, in particular to an automatic processing machine for processing profiled springs. BACKGROUND

[0002] The difference between profiled springs and conventional springs is that the springs themselves are irregular, with bending and a large number of complex angle designs, suitable for some special occasions. The existing horseshoe-shaped spring manufacturing mainly places a metal plate in a calciner for calcination and then places it on a processing mold for bending processing by manual operation. The efficiency is very low, and since the metal plate to be operated is calcined, the workers have a very high safety risk when processing. SUMMARY

[0003] The technical problem to be solved by the present application is to solve the above-mentioned technical problems, and to provide an automatic processing machine for processing profiled springs with high processing efficiency and low processing risk.

[0004] The technical scheme adopted by the present application to solve the technical problem is: an automatic processing machine for processing profiled springs, comprising a machine tool frame, a first sliding rail, an inlet channel, an outlet channel and a plurality of clamping devices are arranged on the machine tool frame, the first sliding rail is arranged on the machine tool frame, and the two ends thereof are respectively close to the inlet channel and the outlet channel, and the clamping devices are arranged on the machine tool frame and above the first sliding rail; a folding and bending tool is arranged on the first sliding rail and close to one side of the inlet channel, and the calcined metal plate is folded and bent; an arc bending tool is arranged on the first sliding rail, and the folded and bent metal plate is pressed into an arc-shaped metal plate; a secondary bending tool is arranged on the first sliding rail and close to one side of the outlet channel, and the arc-shaped metal plate is subjected to secondary bending; the clamping devices are sequentially clamped and placed in the folding and bending tool, the arc bending tool and the secondary bending tool from the inlet channel to the outlet channel.

[0005] As a preferred, the two sides of the first sliding rail are further provided with limiting pieces, and the limiting pieces limit the movement range of the folding and bending tool, the arc bending tool and the secondary bending tool.

[0006] As a preferred, the machine tool frame is further provided with a second sliding rail, and the second sliding rail is installed above the folding and bending tool, the arc bending tool and the secondary bending tool.

[0007] As a preferred, the clamping device is installed on the second sliding rail, and the clamping device clamps the metal plate to move on the second sliding rail.

[0008] As a preferred, the clamping device comprises a sliding part, an extension part and a clamping head, and a rotating mechanism is further arranged between the extension part and the clamping head, and the rotating mechanism drives the clamping head to rotate.

[0009] As preferred, the folding and bending tool comprises a first fixed base and a first processing piece, the first fixed base is arranged on the first slide rail, and the first processing piece is rotatably arranged on the first fixed base; the first fixed base is provided with two first fixed iron columns perpendicular to the top surface of the first fixed base, and a gap is left between the two first fixed iron columns; the first processing piece is further provided with a first movable iron column, and the first movable iron column drives the metal plate placed in the gap of the first fixed iron column to bend to one side with the rotation of the first processing piece on the first fixed base.

[0010] As preferred, the arc-shaped bending tool comprises a second fixed base and a second processing piece, the second fixed base is arranged on the first slide rail, and the second processing piece is rotatably arranged on the second fixed base; one side of the second fixed base is provided with a second fixed iron column, and the second processing piece is provided with an opening, the opening is used for clamping the bent metal plate, and the bent metal plate is bent into an arc-shaped metal plate by rotating the second processing piece.

[0011] As preferred, the second bending tool comprises a third fixed base and a third processing piece, the third fixed base is arranged on the first slide rail, and the third processing piece is connected to the fixed shaft of the third fixed base through a sleeve; the third fixed base is provided with a fixed rod, and the third processing piece is provided with a blocking piece; the arc-shaped metal plate is clamped in the fixed shaft, and the arc-shaped metal plate is bent again by folding the third processing piece and using the blocking piece.

[0012] As preferred, the machine tool is further provided with a detection instrument and a controller, the detection instrument detects the position of the metal plate and sends it to the controller, and the controller controls the clamping device to clamp the metal plate.

[0013] The beneficial effects of the present application are as follows:

[0014] By arranging the slide rail on the machine tool, the folding and bending tool, the arc-shaped bending tool and the second bending tool for manufacturing the special-shaped spring are collected and arranged on the slide rail, and are processed one by one according to the working order of manufacturing the special-shaped spring, different processes are connected by the clamping device, and finally the special-shaped spring is manufactured, the whole processing process has high processing efficiency and low processing risk, and the previous manual processing is eliminated, which has the problems of high labor cost, slow working efficiency and production risk. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of an automatic processing special-shaped spring machine tool in embodiment 1;

[0016] Figure 2 It is a structure schematic view of a horseshoe-shaped special-shaped spring in embodiment 1;

[0017] Figure 3 It is a structure schematic view of the first slide rail in embodiment 1;

[0018] Figure 4Structure diagram of the folding and bending tool in Example 1;

[0019] Figure 5 Structure diagram of the arc-shaped bending tool in Example 1;

[0020] Figure 6 Structure diagram of the secondary bending tool in Example 1;

[0021] The above reference signs: 1, machine tool frame; 2, first sliding rail; 3, feeding channel; 4, discharging channel; 5, clamping device; 501, sliding base; 502, telescopic metal rod; 503, multi-axis machining arm; 504, electric hydraulic clamp; 6, folding and bending tool; 601, first fixed seat; 6011, first boss; 6012, second boss; 602, first fixed iron column; 603, first machined part; 604, first movable iron column; 605, first rotating iron rod; 7, arc-shaped bending tool; 701, second fixed seat; 702, second fixed rod; 703, second machined part; 704, opening; 705, second fixed iron column; 706, second rotating iron rod; 8, secondary bending tool; 801, third fixed seat; 8011, circular table; 8012, fixed plate; 802, fixed shaft; 803, third connecting rod; 804, handle; 805, blocking piece; 9, small blocking piece; 10, camera; 11, controller. DETAILED DESCRIPTION

[0022] The present application is further described below in conjunction with the accompanying drawings and examples, but these specific embodiments do not limit the protection scope of the present application in any way.

[0023] Example 1

[0024] As Figures 1-6As shown, an automatic machine tool for processing profile spring includes a machine tool frame 1, the machine tool frame 1 is provided with a first sliding rail 2, a feeding channel 3, a discharging channel 4 and a plurality of clamping devices 5, the first sliding rail 2 is in an I-shaped structure, the first sliding rail 2 is arranged on the machine tool frame 1, specifically, a groove is arranged on the top surface of the machine tool frame 1, the first sliding rail 2 is arranged in the groove, the two ends of the first sliding rail 2 are respectively close to the feeding channel 3 and the discharging channel 4, the clamping device 5 is arranged on the machine tool frame 1 and above the first sliding rail 2; a folding and bending tool 6, the folding and bending tool 6 is arranged on the first sliding rail 2 and close to one side of the feeding channel 3, and is used for folding and bending the calcined metal plate; an arc-shaped bending tool 7, the arc-shaped bending tool 7 is arranged on the first sliding rail 2, and connects the process of folding and bending the metal plate, and the folded and bent metal plate is pressed into an arc-shaped metal plate; a secondary bending tool 8, the secondary bending tool 8 is arranged on the first sliding rail 2 and close to one side of the discharging channel 4, and connects the process of pressing the folded and bent metal plate into an arc-shaped metal plate, and the arc-shaped metal plate is subjected to secondary bending; the clamping device 5 sequentially clamps the metal plate and places the metal plate in the folding and bending tool 6, the arc-shaped bending tool 7 and the secondary bending tool 8 from the feeding channel 3 to the discharging channel 4.

[0025] The profile spring mainly used in the application is a horseshoe-shaped profile spring, specifically, a metal plate is folded and then bent, a water-drop-shaped cavity formed by bending the metal plate according to a fixed iron rod is left at the folding position, the other end of the metal plate bent inward is in two layers of metal plates which are neatly adhered, and the profile spring formed after three processes of bending, bending and secondary bending is in a horseshoe shape as a whole.

[0026] In the embodiment, limit pieces are further arranged on the two sides of the first sliding rail 2, and the limit pieces limit the movement ranges of the folding and bending tool 6, the arc-shaped bending tool 7 and the secondary bending tool 8.

[0027] The limit pieces are small stop pieces 9 arranged on the top surfaces of the two sides of the first sliding rail 2, the folding and bending tool 6, the arc-shaped bending tool 7 and the secondary bending tool 8 are limited in a fixed movement area, the folding and bending tool 6 and the arc-shaped bending tool 7 and the arc-shaped bending tool 7 and the secondary bending tool 8 do not collide when transferring the processed metal plate, the two small stop pieces 9 are a group, and a certain distance is left between the two groups of small stop pieces 9.

[0028] In the embodiment, the machine tool frame 1 is further provided with a second sliding rail, and the second sliding rail is installed above the folding and bending tool 6, the folding and bending tool 6 and the secondary bending tool 8.

[0029] The machine tool frame 1 extends upwardly to have support frames, the second sliding rail is arranged between the support frames, the second sliding rail is installed above the first sliding rail 2, that is, above the folding and bending tool 6, the folding and bending tool 6 and the secondary bending tool 8, the second sliding rail and the first sliding rail 2 have the same structure, and both are in an I-shaped structure.

[0030] In the embodiment, the clamping device 5 is installed on the second slide rail, the clamping device 5 clamps the metal plate to move on the second slide rail, the clamping device 5 comprises a sliding part, an extension part and a clamping head, and a rotating mechanism is further arranged between the extension part and the clamping head, the rotating mechanism drives the clamping head to rotate.

[0031] The number of the clamping device 5 is multiple, the two clamping devices 5 can work cooperatively, the sliding part of the clamping device 5 is a sliding base 501, four pulleys are installed on the sliding base 501, the four pulleys are installed in the sliding groove of the I-shaped structure of the second slide rail, and the sliding base 501 moves along the second slide rail through the four pulleys; the extension part is specifically two-bar sleeve extension metal rods 502, a first metal rod is sleeved in a second metal rod, the second metal rod is connected with the sliding base 501, the first metal rod is a hollow rod, an iron plate is welded at the end of the first metal rod, a screw hole is formed in the iron plate, and the first metal rod is connected with the clamping head through the screw hole.

[0032] In the embodiment, the folding and bending tool 6 comprises a first fixed seat 601 and a first processing piece 603, the first fixed seat 601 is arranged on the first slide rail 2, and the first processing piece 603 is rotatably arranged on the first fixed seat 601; two first fixed iron columns 602 perpendicular to the top surface of the first fixed seat 601 are arranged on the first fixed seat 601, a gap is left between the first fixed iron columns 602, a first movable iron column 604 is further arranged on the first processing piece 603, and the first movable iron column 604 drives the metal plate placed in the gap of the first fixed iron column 602 to bend to one side along with the rotation of the first processing piece 603 on the first fixed seat 601.

[0033] The first fixed seat 601 is provided with four pulleys, which are installed in the I-shaped groove of the first sliding rail 2. The first fixed seat 601 moves along the first sliding rail 2 through the four pulleys. The first fixed seat 601 is a whole boss structure, including a first boss 6011 and a second boss 6012. The first boss 6011 is arranged on the top surface of the second boss 6012 and has a smaller diameter than the second boss 6012. The second boss 6012 is connected with the four pulleys. The top surface of the first boss 6011 is provided with two first fixed iron columns 602 which are perpendicular to the first boss 6011. The two first fixed iron columns 602 have a gap therebetween, and the width of the gap is greater than the thickness of the double-layer metal plate. The first processing piece 603 is a hollow sleeve structure. The first processing piece 603 can be sleeved on the outer surface of the first boss 6011. The top surface of the first processing piece 603 is provided with a first movable iron column 604, and the side surface is welded with a first rotating iron rod 605. The first rotating iron rod 605 is driven by the multi-axis machining arm 503 to drive the rotation of the first processing piece 603 on the first boss 6011. The first movable iron column 604 drives the metal plate placed in the gap of the first fixed iron column 602 to bend to one side along with the first processing piece 603. After bending, the metal plate is in a folded state as a whole. Then, the folded metal plate is taken out by the electric hydraulic clamp 504 and is pressed tightly together. The two layers of metal strips that have not been completely attached together are pressed tightly together and are sent to the arc bending tool 7.

[0034] In the embodiment, the arc bending tool 7 includes a second fixed seat 701 and a second processing piece 703. The second fixed seat 701 is arranged on the first sliding rail 2, and the second processing piece 703 is rotatably arranged on the second fixed seat 701. One side of the second fixed seat 701 is provided with a second fixed iron column 705. The second processing piece 703 is provided with an opening 704. The folded metal plate is clamped in the opening 704, and the folded metal plate is bent into an arc-shaped metal plate by rotating the second processing piece 703.

[0035] The second fixed seat 701 is provided with four pulleys, which are installed in the I-shaped groove of the first sliding rail 2. The second fixed seat 701 moves along the first sliding rail 2 through the four pulleys. The top surface of the second fixed seat 701 is provided with a second fixed rod 702, and the second fixed rod 702 is sleeved with a second processing piece 703. The second processing piece 703 is rotatably arranged on the second fixed seat 701. The second processing piece 703 is provided with an opening 704, and the size of the opening 704 is just suitable for clamping the metal plate with a water-drop-shaped cavity pressed by the first pressing tool 6. One side of the second fixed seat 701 is provided with a second fixed iron column 705, and the side surface of the second processing piece 703 is welded with a second rotating iron rod 706. The second processing piece 703 is rotated around the second fixed rod 702 as the rotating shaft through the second rotating iron rod 706 driven by the multi-axis mechanical processing arm 503. The metal plate placed in the opening 704 is curved along the surface of the second processing piece 703 under the reaction force of the second fixed iron column 705, and an arc-shaped metal plate is formed.

[0036] In the embodiment, the second pressing tool 8 includes a third fixed seat 801 and a third processing piece. The third fixed seat 801 is arranged on the first sliding rail 2, and the third processing piece is connected to the fixed shaft 802 of the third fixed seat 801 through a sleeve. The third fixed seat 801 is provided with a fixed rod, and the third processing piece is provided with a blocking piece 805. The arc-shaped metal plate is clamped in the fixed shaft 802. The arc-shaped metal plate is secondarily pressed and bent through the blocking piece 805 by turning the third processing piece.

[0037] The third fixing base 801 has four pulleys, which are installed in the I-shaped groove of the first sliding rail 2, and the third fixing base 801 moves along the first sliding rail 2 through the four pulleys. The third fixing base 801 comprises a circular table 8011 and a fixing plate 8012 welded on the circular table 8011. One end of the fixing plate 8012 is a cylindrical body, which is a fixing shaft 802. The fixing plate 8012 is a hollow structure, and two third connecting rods 803 are connected in the hollow structure through bolts. Adjacent third connecting rods 803 have a gap. The main body of the third machining part is a solid metal block, one end of which is a hollow cylinder, which is sleeved on the fixing shaft 802. A handle 804 is welded outside one end of the third machining part. The handle 804 is clamped by the multi-axis machining arm 503 and the electric hydraulic clamp 504, so that the third machining part rotates 180° around the fixing shaft 802 as the rotating shaft. A stop piece 805 is arranged on the solid metal block. The stop piece 805 is a small protrusion on the solid metal block. When the arc-shaped metal plate is placed at the connection between the third machining part and the third fixing base 801, the third machining part is flipped, and the stop piece 805 on the third machining part extrudes the arc-shaped metal plate on the fixing shaft 802. Then, the handle 804 on the third machining part is clamped by controlling the multi-axis machining arm 503 and the electric hydraulic clamp 504 to flip. The extrusion force generated by the rotation of the third machining part extrudes the arc-shaped metal plate to form secondary bending.

[0038] By the way, two sliding rails can be further arranged on one side of the machine tool frame 1, two multi-axis machining arms 503 are further arranged on the two sliding rails, and a heating furnace is built on one side of the machine tool frame 1. If the metal plate is slightly cooled after being processed by the folding bending tool 6, the metal plate can be placed in the heating furnace for short-time heating.

[0039] In the embodiment, the machine tool further comprises a detection instrument and a controller 11. The detection instrument detects the position of the metal plate and sends the position to the controller 11. The controller 11 controls the clamping device 5 to clamp the metal plate.

[0040] The detection instrument arranged on the machine tool refers to the detection instrument arranged on both sides of the machine tool, i.e. on both sides of the folding bending tool 6, the arc-shaped bending tool 7 and the secondary bending tool 8. The detection instrument is also arranged on both sides of the feeding channel 3 and the discharging channel 4. The detection instrument is a positioning sensor, a camera 10 or other detection equipment. The detection instrument mainly identifies the position of the metal plate in real time, transmits the collected information to the controller 11, and controls the clamping device 5 to clamp the metal plate and controls the multi-axis machining arm 503 and the folding bending tool 6, the arc-shaped bending tool 7 or the secondary bending tool 8 to move together to perform feeding, metal plate processing and discharging processes.

[0041] The working principle of the machine tool for automatically processing profiled springs is as follows:

[0042] The machine tool is internally provided with a first slide rail 2, limit members are arranged on both sides of the slide rail, and a folding press bending tool 6, an arc press bending tool 7 and a secondary press bending tool 8 are sequentially arranged between the limit members and in the first slide rail 2. The folding press bending tool 6 is arranged on the side close to the feeding channel 3, the secondary press bending tool 8 is arranged on the side of the discharging channel 4, and the arc press bending tool 7 is arranged between the folding press bending tool 6 and the secondary press bending tool 8 as a second process. Due to the blocking of the limit members, collision does not occur between adjacent tools. Then, from the feeding channel 3, the calcined metal plate is clamped and sent to the folding press bending tool 6 by the clamping device 5 for folding press bending. After folding press bending, the clamping device 5 clamps and sends the arc metal plate to the arc press bending tool 7 for arc press bending. After arc press bending, the clamping device 5 clamps and sends the arc metal plate to the secondary press bending tool 8 for secondary press bending. After secondary press bending, the clamping device 5 clamps and places the finished horseshoe-shaped special-shaped spring into the discharging channel 4.

[0043] The clamping device 5 is installed in a second slide rail above the first slide rail 2. The clamping device 5 includes a telescopic metal rod 502, a multi-axis machining arm 503 and an electric hydraulic clamp 504. The clamping device 5 cooperates with multiple detection instruments arranged on both sides of the machine tool, such as a positioning sensor and a camera 10, to realize real-time positioning of the metal plate. The detection data is transmitted to a controller 11, and the controller 11 sends a command to the clamping device 5. The clamping device 5 controls the telescopic metal rod 502 to reach a specified height, and then the multi-axis machining arm 503 adjusts the angle and length of the mechanical arm according to the detection data. The electric hydraulic clamp 504 is extended to clamp the metal plate, which is transported to the next process and controlled by the controller 11. Through the cooperative work of the detection instruments, the controller 11 and the clamping device 5, the horseshoe-shaped special-shaped spring is completely automatically manufactured, which is highly automated and accurately processed. Since the workers do not directly participate in the workpiece processing, there is no safety risk to the workers.

[0044] The working method of the machine tool for automatically processing special-shaped springs is as follows:

[0045] Firstly, the calcined metal plate is transported to the feeding channel 3, the camera 10 detects the entry of the material and sends a command to the controller 11, the controller 11 controls the clamping device 5 to reach above the material, the clamping device 5 first controls the telescopic metal rod 502 to reach the specified height, and then the multi-axis machining arm 503 adjusts the angle and length of the machining arm according to the detection data, the electric hydraulic clamp 504 is extended to clamp the metal plate, the position and angle of the folding and bending tool 6 are accurately identified through the detection of the camera 10, the metal plate is sent into the gap left between the first fixed iron column 602 in the folding and bending tool 6, and then the multi-axis machining arm 503 pushes the first rotating iron rod 605 to drive the first machining part 603 to rotate on the first boss 6011, the first movable iron column 604 drives the metal plate placed in the gap of the first fixed iron column 602 and bends to one side, after bending, the metal plate is in a folded state as a whole, and then the electric hydraulic clamp 504 of another clamping device 5 takes out the folded metal plate and applies extrusion force to press the two metal strips that have not been completely adhered together, and the two metal strips are pressed together and sent to the arc-shaped bending tool 7, at this time, the folding and bending device is no longer moved due to the blocking of the limiting part, and returns to the original position under the cooperation of the controller 11 and the camera 10.

[0046] Then, the position and angle of the arc-shaped bending tool 7 are accurately identified through the detection of the camera 10, the controller 11 sends a command to the clamping device 5 to place the metal plate in the opening 704 in the arc-shaped bending tool 7, the size of the opening 704 is just enough to clamp the metal plate with a water drop-shaped cavity left by the folding and bending tool 6, the multi-axis machining arm 503 pushes the second rotating iron rod 706 to drive the second machining part 703 to rotate around the second fixed rod 702 as the rotating shaft, the metal plate placed in the opening 704 is bent along the surface of the second machining part 703 under the action of the second machining part 703 and the reaction force of the second fixed iron column 705, forming an arc-shaped metal plate, the electric hydraulic clamp 504 of the clamping device 5 clamps and takes out the arc-shaped metal plate, and moves to the secondary bending tool 8, at this time, the arc-shaped bending tool 7 no longer moves due to the blocking of the limiting part, and returns to the original position under the cooperation of the controller 11 and the camera 10.

[0047] Furthermore, the position and angle of the secondary bending tool 8 are accurately identified by the detection of the camera 10, and the controller 11 sends a command to the third workpiece clamped with the arc-shaped metal plate placed at the connection between the third workpiece and the third fixed seat 801 in the secondary bending tool 8, and the third workpiece is flipped through the connecting rod mechanism, and the stopper 805 on the third workpiece extrudes the arc-shaped metal plate on the fixed shaft 802, and through the action of the connecting rod mechanism, the extrusion force generated by the rotation of the third workpiece extrudes the arc-shaped metal plate to form secondary bending, and the electric hydraulic clamp 504 of the clamping device 5 clamps the arc-shaped metal plate and takes it out, and displaces to the discharge channel 4, and at this time, the secondary bending tool 8 is blocked by the limiting piece and no longer moves, and returns to the original position under the cooperation of the controller 11 and the camera 10.

[0048] Finally, after the clamping device 5 clamps the metal plate and discharges it from the discharge inlet, the clamping device 5 is displaced to the original position to start the cycle work.

[0049] The technical solutions described in the above embodiments have the following beneficial effects:

[0050] By setting the slide rail on the machine tool, the folding bending tool 6, the arc-shaped bending tool 7 and the secondary bending tool 8 for making the horse-shoe-shaped spring are arranged on the slide rail, and are processed one by one according to the working order of making the special-shaped spring, and different processes are connected by the clamping device 5, and finally the special-shaped spring is made, the whole processing process has high processing efficiency and low processing risk, and the human cost, slow work efficiency and production risk of manual processing are avoided.

[0051] It is worth mentioning that the folding bending tool, the arc-shaped bending tool and the secondary bending tool can be provided with a connecting rod device on both sides to realize the rotation of the first workpiece, the second workpiece or the third workpiece.

[0052] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A machine tool for automatically processing profiled springs, characterized in that, Comprising The machine tool frame is provided with a first sliding rail, an inlet channel, an outlet channel and a plurality of clamping devices. The first sliding rail is arranged on the machine tool frame, with its two ends respectively close to the inlet channel and the outlet channel. The clamping devices are arranged on the machine tool frame and above the first sliding rail. The folding and bending tool is arranged on the first sliding rail and close to one side of the inlet channel to fold and bend the calcined metal plate. The folding and bending tool comprises a first fixed seat and a first processing piece. The first fixed seat is arranged on the first sliding rail, and the first processing piece is rotatably arranged on the first fixed seat. Two first fixed iron columns perpendicular to the top surface of the first fixed seat are arranged on the first fixed seat, with a gap between the two iron columns. A first movable iron column is also arranged on the first processing piece. The first movable iron column drives the metal plate placed in the gap of the first fixed iron column to bend to one side with the rotation of the first processing piece on the first fixed seat. The arc-shaped bending tool is arranged on the first sliding rail to press the folded and bent metal plate into an arc-shaped metal plate. The arc-shaped bending tool comprises a second fixed seat and a second processing piece. The second fixed seat is arranged on the first sliding rail, and the second processing piece is rotatably arranged on the second fixed seat. A second fixed iron column is arranged on one side of the second fixed seat, and an opening is arranged on the second processing piece. The bent metal plate is clamped in the opening and bent into an arc-shaped metal plate by rotating the second processing piece. The second bending tool is arranged on the first sliding rail and close to one side of the outlet channel to bend the arc-shaped metal plate again. The second bending tool comprises a third fixed seat and a third processing piece. The third fixed seat is arranged on the first sliding rail, and the third processing piece is connected to the fixed shaft of the third fixed seat through a sleeve. A fixed rod is arranged on the third fixed seat, and a stop piece is arranged on the third processing piece. The arc-shaped metal plate is clamped in the fixed shaft, and the arc-shaped metal plate is bent again by folding the third processing piece and using the stop piece. The clamping devices successively clamp the metal plate from the inlet channel to the outlet channel and place it in the folding and bending tool, the arc-shaped bending tool and the second bending tool.

2. The machine tool for automatically processing profiled springs according to claim 1, characterized in that, Limiting pieces are arranged on both sides of the first sliding rail to limit the movement range of the folding and bending tool, the arc-shaped bending tool and the second bending tool.

3. The machine tool for automatically processing profiled springs according to claim 1, characterized in that, A second sliding rail is arranged on the machine tool frame and above the folding and bending tool, the arc-shaped bending tool and the second bending tool.

4. The machine tool for automatically processing profiled springs according to claim 3, characterized in that, The clamping devices are arranged on the second sliding rail, and the clamping devices move the metal plate on the second sliding rail.

5. The machine tool for automatically processing profiled springs according to claim 1, characterized in that, The clamping devices comprise a sliding part, an extension part and a clamping head. A rotating mechanism is arranged between the extension part and the clamping head to drive the clamping head to rotate.

6. The machine tool for automatically processing profiled springs according to any one of claims 1 to 5, characterized in that, Detection instruments and a controller are arranged on the machine tool. The detection instruments detect the position of the metal plate and send it to the controller, and the controller controls the clamping devices to clamp the metal plate.

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