A bending tool for processing arc surface of special-shaped spring

Abstract

The present invention belongs to the technical field of special-shaped spring processing, and specifically is a special-shaped spring arc surface processing bending tool, comprising a base, a first support plate is fixedly installed in the middle of the base, a second support plate is fixedly connected to the rear side of the base, a support seat is fixedly connected to the left side of the base, a transmission assembly is installed between the second support plate and the first support plate, a pressing assembly is installed at the front end of the transmission assembly, a pressing rod is connected to the bottom of the pressing assembly, a first wedge block is connected to the left side of the pressing assembly, a slide plate is slidably installed inside the first support plate, a second wedge block is fixedly connected to the right side of the slide plate, a cutting knife is fixedly connected to the bottom of the slide plate, the slide plate is connected to the second support plate through a second spring, and a guide block is installed on the right side of the support seat; the arc surface processing bending tool can process a metal strip spring with a gap in the middle and convenient for subsequent docking with a rod member, and the bending tool can automatically cut the metal strip spring after bending it.

Description

Technical Field

[0001] The invention relates to the technical field of processing special-shaped springs, and in particular to a bending tool for processing the arc surface of a special-shaped spring. Background Art

[0002] Special-shaped springs refer to springs with irregular shapes. Common ones include variable diameter coil springs, also known as tower springs, leaf springs, unequal pitch coil springs, etc. When processing metal strip springs, it is necessary to use bending tools for processing the arc surface of special-shaped springs to ensure that the surface of the metal strip spring presents a specific shape. The existing bending tools still have some defects when used;

[0003] The existing bending tools for processing and bending special-shaped springs on the curved surface can only bend special-shaped springs or bend them at a specific angle. They cannot keep a part of the gap inside the metal strip spring while bending, and cannot process special-shaped springs that are convenient for docking with rods. In addition, the existing bending tools for processing and bending special-shaped springs on the curved surface need to cut the metal strip after bending, and cannot realize the function of automatically cutting the metal strip after the bending work is completed. Summary of the invention

[0004] In view of the problems existing in the existing metal strip spring bending tools, the present invention is proposed.

[0005] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions: a tool for processing and bending special-shaped spring arc surfaces, comprising a base, a first support plate fixedly installed in the middle of the base, a second support plate fixedly connected to the rear side of the base, a support seat fixedly connected to the left side of the base, a transmission assembly installed between the second support plate and the first support plate, a pressing assembly installed at the front end of the transmission assembly, a pressing rod connected to the bottom of the pressing assembly, a first wedge block connected to the left side of the pressing assembly, a slide plate slidably installed inside the first support plate, a second wedge block fixedly connected to the right side of the slide plate, a cutting knife fixedly connected to the bottom of the slide plate, the slide plate is connected to the first support plate through a second spring, a guide block is installed on the right side of the support seat, a guide groove is provided inside the support seat, an extrusion groove is provided on the surface of the guide block, and the position of the extrusion groove corresponds to the position of the cutting knife.

[0006] As a preferred solution of a special-shaped spring arc surface processing bending tool described in the present invention, the base, the first support plate, the second support plate and the support seat are integrally formed, the first support plate and the second support plate are parallel to each other, and the first support plate and the base are perpendicular to each other.

[0007] As a preferred solution of the special-shaped spring arc surface processing bending tool described in the present invention, wherein: a slide groove is opened above the first support plate, the pressing assembly includes a movable block slidably installed inside the slide groove, a connecting frame is fixedly connected below the movable block, an electric push rod is fixedly arranged inside the connecting frame, a first spring is fixedly connected below the electric push rod, a cross plate is fixedly connected below the first spring, a pressure plate is fixedly arranged below the front end of the cross plate, the pressure rod and the pressure plate are rotatably connected, and the position of the pressure rod corresponds to the position of the guide block.

[0008] As a preferred solution of the special-shaped spring arc surface processing bending tool described in the present invention, a movable rod is slidably installed in the middle of the first support plate, a connecting handle is fixedly connected to the surface of the movable rod, and there is a gap between the movable rod and the guide block.

[0009] As a preferred solution of the special-shaped spring arc surface processing and bending tool described in the present invention, wherein: a limit block is slidably installed inside the support seat, the limit block and the guide block are fixedly connected, a baffle is fitted at the front end of the limit block, a lifting groove is provided on the surface of the baffle, and a limit rod is fixedly connected to the rear side of the baffle, and the limit rod is fitted and installed inside the support seat.

[0010] As a preferred solution of a tool for processing and bending the arc surface of a special-shaped spring described in the present invention, the position of the first wedge block corresponds to the position of the second wedge block, the left side of the first wedge block and the right side of the second wedge block are both provided with chamfered surfaces, the chamfered surface on the left side of the first wedge block and the chamfered surface on the right side of the second wedge block have the same inclination angle, and the slide plate and the cutting knife form a telescopic structure through the first wedge block, the second wedge block and the guide block.

[0011] As a preferred solution of the special-shaped spring arc surface processing and bending tool described in the present invention, the transmission assembly includes a motor fixedly installed on the upper left side of the second support plate, a first synchronous wheel is fixedly connected to the output shaft of the motor, a first damping pad is fixedly connected to the outer side of the first synchronous wheel, a second synchronous wheel is rotatably installed in the middle of the second support plate, a second damping pad is fixedly connected to the outer side of the second synchronous wheel, a convex rod is fixedly provided on the surface of the second synchronous wheel, a movable frame is provided on the outer side of the convex rod, and the movable frame and the movable block are fixedly connected.

[0012] As a preferred solution of the special-shaped spring arc surface processing bending tool described in the present invention, the movable frame and the movable block form a reciprocating sliding structure through the convex rod and the second synchronous wheel and the first support plate, and the outer wall of the rear half of the movable block is in contact with the inner wall of the slide groove.

[0013] As a preferred solution of the special-shaped spring arc surface processing bending tool described in the present invention, the front end of the movable frame is fixedly connected with a fixed cylinder, a guide rod is arranged through the inside of the fixed cylinder, and protrusions are fixedly connected with the left and right sides of the guide rod, the protrusions and the first support plate are fixedly connected, and the movable frame forms a sliding structure through the fixed cylinder and the guide rod.

[0014] As a preferred solution of the special-shaped spring arc surface processing bending tool described in the present invention, the baffle plate forms a sliding structure with the support seat through the limiting rod, and the guide block forms a clamping structure with the support seat through the baffle plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By providing a detachable and engageable guide block, a pressing assembly and a pressing rod, the device can press the metal strip on the surface of the guide block through the pressing rod, so that the metal strip can be bent along the surface track of the guide block, so that a gap is set in the middle of the processed metal strip spring to facilitate subsequent docking with the rod, thereby improving the functionality of the device. Compared with the existing bending tools, this device can not only realize the bending function, but also realize the processing of metal strip springs that are convenient for subsequent docking with the rod, thereby solving the defects of the existing bending tools that cannot keep a part of the gap inside the metal strip spring while bending during use, and cannot process special-shaped springs that are convenient for docking with the rod.

[0017] 2. Through the first wedge block and the second wedge block on the device, after the device is reset for the second press bending, the beveled surface on the left side of the first wedge block is against the beveled surface on the right side of the second wedge block, thereby driving the cutting knife to automatically move downward, so that the metal strip can be cut off, and then the device can automatically perform cutting work after the press bending work is completed, which solves the defect that the existing press bending tools cannot automatically cut the metal strips after the press bending work is completed. The device has the advantage of being more convenient to use, and the cutting work after press bending can be achieved without the use of additional equipment and additional operations.

[0018] 3. Through the transmission assembly that is set, the device can make the movable frame move back and forth left and right when the convex rod makes a circular motion through the rotation of the second synchronous wheel. In conjunction with the electric push rod, the device can extend the electric push rod when the movable frame moves to the right, so that the pressure rod moves to the bottom of the arc surface structure on the right side of the guide block. After the movable frame moves to the left and then moves to the right, the electric push rod is shortened, so that the pressure rod can move again along the arc surface trajectory of the guide block to the top of the guide block. This cycle is repeated, so that the device can automatically perform the arc surface processing and bending function. Compared with the prior art, the metal strip is first bent and then the ring is processed. The operation of this device is more convenient, and the processing function of the middle ring of the metal strip can be realized without the use of extra mechanical equipment, thereby improving the convenience of the device when used.

[0019] 4. By setting the limit block and baffle, the baffle and the guide block can remain fixed after installation. After the baffle is removed, the guide block can be easily replaced, and then the guide block with different arc surface trajectories can be replaced for use, so that the device can easily process metal strip springs with different arc surface structures, thereby improving the applicability of the device; and the device sets a movable rod and a connecting handle, so that after the spring is processed, the connecting handle can be pulled, so that the movable rod pushes the metal strip spring on the surface of the guide block, thereby realizing the function of convenient material removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 It is a schematic diagram of the overall structure of a bending tool for processing an arc surface of a special-shaped spring according to the present invention;

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure at A in the middle;

[0023] Figure 3 yes Figure 1 Schematic diagram of the structure at B in the middle;

[0024] Figure 4 It is a schematic diagram of the connection structure of the first synchronous wheel and the convex rod of a special-shaped spring arc surface processing bending tool of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure of a movable block and a movable frame of a special-shaped spring arc surface processing bending tool of the present invention;

[0026] Figure 6It is a front view structural schematic diagram of a tool for processing and bending the arc surface of a special-shaped spring according to the present invention;

[0027] Figure 7 yes Figure 6 Schematic diagram of the structure at C in the middle;

[0028] Figure 8 The present invention is a schematic diagram of the connection structure of a limit rod and a baffle plate of a special-shaped spring arc surface processing bending tool.

[0029] Numbers in the figure: 1, base; 2, first support plate; 3, second support plate; 4, support seat; 5, guide groove; 6, guide block; 7, pressing assembly; 701, movable block; 702, connecting frame; 703, electric push rod; 704, first spring; 705, cross plate; 706, pressing plate; 8, pressing rod; 9, first wedge block; 10, sliding plate; 11, second wedge block; 12, transmission assembly; 1201, motor; 1202, first Synchronous wheel; 1203, first damping pad; 1204, second synchronous wheel; 1205, second damping pad; 1206, protruding rod; 1207, fixed cylinder; 1208, guide rod; 1209, movable frame; 1210, protruding block; 13, sliding groove; 14, second spring; 15, cutting knife; 16, extrusion groove; 17, limiting rod; 18, baffle; 19, pulling groove; 20, limiting block; 21, movable rod; 22, connecting handle. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] like Figure 1-Figure 8As shown, a bending tool for processing an irregular spring arc surface comprises a base 1, a first support plate 2 is fixedly installed in the middle of the base 1, a second support plate 3 is fixedly connected to the rear side of the base 1, a support seat 4 is fixedly connected to the left side of the base 1, a functional component on the device is supported by the base 1, the first support plate 2, the second support plate 3 and the support seat 4, a transmission component 12 is installed between the second support plate 3 and the first support plate 2, a pressing component 7 is installed at the front end of the transmission component 12, and the pressing component 7 is driven to reciprocate left and right by the transmission component 12 on the device, a pressure rod 8 is connected to the bottom of the pressing component 7, a first wedge block 9 is connected to the left side of the pressing component 7, a slide plate 10 is slidably installed inside the first support plate 2, a second wedge block 11 is fixedly connected to the right side of the slide plate 10, a cutting knife 15 is fixedly connected to the bottom of the slide plate 10, the slide plate 10 is connected to the first support plate 2 through a second spring 14, a guide block 6 is installed on the right side of the support seat 4, During the reciprocating movement of the pressing component 7, the pressing rod 8 can be used to extrude the metal strip spring, so that the metal strip spring can move along the arc trajectory of the right half of the guide block 6, so that the metal strip spring can maintain a gap in the middle, so that the processed metal strip spring can be docked with the rod later, thereby improving the function of the device. The device can produce springs that are convenient for subsequent docking with the rod. During the pressing process, the device can use the first wedge block 9 to press the second wedge block 11, so that the cutting knife 15 can move downward. A guide groove 5 is provided inside the support seat 4, and an extrusion groove 16 is provided on the surface of the guide block 6. The position of the extrusion groove 16 corresponds to the position of the cutting knife 15. During the downward movement of the cutting knife 15, the cutting knife 15 cuts off the metal strip, and the extrusion groove 16 realizes the function of protecting the cutting knife 15 and the guide block 6, thereby realizing the function of automatically cutting the metal strip after the arc bending processing step is completed.

[0035] In this example, the base 1, the first support plate 2, the second support plate 3 and the support seat 4 are integrally formed, the first support plate 2 and the second support plate 3 are parallel to each other, and the first support plate 2 and the base 1 are perpendicular to each other. The functional components are supported by the first support plate 2 and the second support plate 3 on the device to ensure that the functional components on the device work smoothly.

[0036] In this example, a slide groove 13 is provided above the first support plate 2, and the pressing assembly 7 includes a movable block 701 slidably installed inside the slide groove 13, a connecting frame 702 is fixedly connected below the movable block 701, an electric push rod 703 is fixedly arranged inside the connecting frame 702, a first spring 704 is fixedly connected below the electric push rod 703, a cross plate 705 is fixedly connected below the first spring 704, a pressure plate 706 is fixedly arranged below the front end of the cross plate 705, the pressure rod 8 and the pressure plate 706 are rotatably connected, the position of the pressure rod 8 corresponds to the position of the guide block 6, the first spring 704 and the cross plate 705 are pushed by the electric push rod 703 on the device, so that the pressure plate 706 and the pressure rod 8 move downward, so that the pressure rod 8 can bend the metal strip spring, so that the metal strip spring can be processed into a specific shape.

[0037] In this example, a movable rod 21 is slidably installed in the middle of the first support plate 2, and a connecting handle 22 is fixedly connected to the surface of the movable rod 21. There is a gap between the movable rod 21 and the guide block 6. The right half of the guide block 6 is bent along the trajectory of the guide block 6 through the guide block 6 on the device to achieve the arc surface processing function. Subsequently, the movable rod 21 can be pulled by pulling the connecting handle 22 to quickly unload the processed metal strip spring, so as to improve the convenience of unloading the device.

[0038] In this example, a limit block 20 is slidably installed inside the support seat 4, and the limit block 20 and the guide block 6 are fixedly connected. A baffle 18 is fitted at the front end of the limit block 20, and a lifting groove 19 is provided on the surface of the baffle 18. A limit rod 17 is fixedly connected to the rear side of the baffle 18, and the limit rod 17 is fitted and installed inside the support seat 4. The limit rod 17 on the device allows the baffle 18 to remain stable after installation, and the lifting groove 19 facilitates the subsequent removal of the baffle 18. The limit block 20 allows the guide block 6 to be stably installed and easily removed.

[0039] In this example, the position of the first wedge block 9 corresponds to the position of the second wedge block 11. The left side of the first wedge block 9 and the right side of the second wedge block 11 are both provided with chamfered surfaces. The chamfered surface on the left side of the first wedge block 9 and the chamfered surface on the right side of the second wedge block 11 have the same inclination angle. The slide plate 10 and the cutting knife 15 form a telescopic structure between the first wedge block 9 and the second wedge block 11 and the guide block 6. The telescopic structure on the device enables the first wedge block 9 to resist the second wedge block 11 when moving to the left, so that the second wedge block 11 moves downward, so that the second wedge block 11 can drive the cutting knife 15 to move downward, thereby realizing the function of automatic cutting after the bending work is completed.

[0040] In this example, the transmission assembly 12 includes a motor 1201 fixedly mounted on the upper left side of the second support plate 3, a first synchronous wheel 1202 is fixedly connected to the output shaft of the motor 1201, a first damping pad 1203 is fixedly connected to the outer side of the first synchronous wheel 1202, a second synchronous wheel 1204 is rotatably mounted in the middle of the second support plate 3, a second damping pad 1205 is fixedly connected to the outer side of the second synchronous wheel 1204, the motor 1201 drives the first synchronous wheel 1202 to rotate, and utilizes the friction between the first damping pad 1203 and the second damping pad 1205, so that the first synchronous wheel 1202 and the second synchronous wheel 1203 are rotated. 4 is synchronously rotated and driven by friction. When the resistance of the device is too large during operation, the first damping pad 1203 rotates outside the second damping pad 1205, thereby stopping the device from working and realizing the overload protection function. A protruding rod 1206 is fixedly provided on the surface of the second synchronous wheel 1204, and a movable frame 1209 is provided outside the protruding rod 1206. The movable frame 1209 and the movable block 701 are fixedly connected. When the second synchronous wheel 1204 rotates, the protruding rod 1206 rotates so that the movable frame 1209 moves back and forth under the limiting action of the movable block 701, so as to realize the continuous bending function later.

[0041] In this example, the movable frame 1209 and the movable block 701 form a reciprocating sliding structure with the first support plate 2 through the protruding rod 1206 and the second synchronous wheel 1204. The outer wall of the rear half of the movable block 701 fits with the inner wall of the slide groove 13. The movable block 701 and the slide groove 13 fit with each other, so that the movable frame 1209 and the movable block 701 can only move in the left and right directions, thereby improving the overall stability of the device.

[0042] In this example, the front end of the movable frame 1209 is fixedly connected to the fixed cylinder 1207, and the interior of the fixed cylinder 1207 is penetrated by a guide rod 1208. The left and right sides of the guide rod 1208 are fixedly connected with protrusions 1210, and the protrusions 1210 and the first support plate 2 are fixedly connected. The movable frame 1209 forms a sliding structure through the fixed cylinder 1207 and the guide rod 1208. Through the sliding structure on the device, the fixed cylinder 1207 cooperates with the guide rod 1208 to limit the upper half of the movable frame 1209, so that the movable frame 1209 can move straight left and right, so that the movable frame 1209 remains stable as a whole.

[0043] In this example, the baffle 18 forms a sliding structure with the support seat 4 through the limit rod 17, and the guide block 6 forms a locking structure with the support seat 4 through the baffle 18. Through the locking structure on the device, the guide block 6 can be stably installed and can also be easily removed, so that the guide block 6 with different arc surface structures can be replaced to bend the metal strip spring. The device has the advantage of a higher degree of adjustability, and can be replaced with guide blocks 6 with different structures according to the required metal strip spring structure for bending work, thereby improving the applicability of the device.

[0044] It should be noted that the present invention is a bending tool for processing the arc surface of a special-shaped spring. First, Figure 1 , Figure 3 , Figure 5 and Figure 8 As shown, the base 1, the first support plate 2 and the second support plate 3 are used to support the device as a whole. When the device is in use, the guide block 6 of the corresponding structure is first selected according to the required arc surface structure, so that the metal strip spring can form a spring of the corresponding shape along the arc surface track of the guide block 6. During the arc surface processing and bending process, the metal strip spring is transported from the guide groove 5 on the support seat 4 to the surface of the guide block 6, and then the first synchronous wheel 1202 is driven to rotate by the motor 1201 on the transmission assembly 12. The friction force generated when the first synchronous wheel 1202 is pressed by the first damping pad 1203 and the second damping pad 1205 drives the second synchronous wheel 1204 to rotate. The indirect drive method has the advantage of higher safety compared to directly driving the second synchronous wheel 1204 to rotate. When the movement resistance of the pressure rod 8 is too large, the friction between the first damping pad 1203 and the second damping pad 1205 is insufficient to drive the second synchronous wheel 1204 to rotate. At this time, the second synchronous wheel 1204 remains stationary, and the first damping pad 1203 rotates on the outside of the second damping pad 1205, so that the device can stop working when foreign objects enter the device or the pressure rod 8 is blocked, and then the above-mentioned torque limiting structure is used to achieve the protection function; when the device replaces the guide block 6 with a different arc surface structure, the baffle 18 is pulled by the lifting groove 19 to make the limit rod 17 detach from the inside of the support seat 4. At this time, the guide block 6 can be detached from the support seat 4 to replace the guide block 6 with a different arc surface structure in combination with the metal strip spring and the pressure rod 8, so that the device can process metal strip springs with different structures;

[0045] like Figure 1 , Figure 2 and Figure 4-Figure 7As shown, during the operation of the device, since the movable block 701, the movable frame 1209 and the fixed cylinder 1207 are an integral whole, and the fixed cylinder 1207 is limited by the guide rod 1208 on the protrusion 1210, and the movable block 701 is limited by the slide groove 13, the movable frame 1209 can only move left and right, and will not move up and down. During the rotation of the second synchronous wheel 1204, the protrusion 1206 can abut against the inner wall of the movable frame 1209, so that the movable frame 1209 drives the pressing assembly 7 as a whole. The movable block 701 and the connecting frame 702 perform left-right reciprocating motion. When the movable block 701 and the connecting frame 702 move to the right, under the action of the first spring 704, the pressing rod 8 moves to the right side of the guide block 6. Under the elastic force of the first spring 704, the pressing rod 8 automatically moves to the bottom of the guide block 6. At this time, the pressing rod 8 is driven to the left. By shortening the electric push rod 703, the pressing rod 8 is pressed against the lower surface of the guide block 6 under the tension of the first spring 704, so that the metal strip on the outer side of the guide block 6 can form a corresponding The second spring 14 facilitates the automatic resetting of the cutting knife 15. The above process is the effect of a single reciprocating motion of the movable frame 1209. When the movable frame 1209 continues to reciprocate, the electric push rod 703 is extended and retracted, so that the device can perform cyclic bending and cut off the metal strip spring. After the single arc surface bending work is completed, the pressing rod 8 is driven to the right by the movable block 701. Under the pulling force of the first spring 704, it automatically moves to the top of the guide block 6. At this time, the movable block 701 drives the pressing rod 8 to move left, completing the secondary bending step of the metal strip spring. When the pressing rod 8 moves to the leftmost, the first wedge block 9 on the connecting frame 702 abuts against the second wedge block 11, so that the second wedge block 11 moves downward. The second wedge block 11 drives the slide plate 10 and the cutting knife 15 to move downward during the downward movement. The cutting knife 15 cuts off the metal strip spring, thereby realizing the function of automatically cutting the metal strip spring after bending. The second spring 14 facilitates the automatic resetting of the cutting knife 15. The above process is the effect of a single reciprocating motion of the movable frame 1209. When the movable frame 1209 continues to reciprocate, the electric push rod 703 is extended and retracted, so that the device can perform cyclic bending and cut off the metal strip spring. After completing a single cycle, the second wedge block 9 on the connecting frame 702 Figure 6 By pulling the connecting handle 22, the movable rod 21 moves forward, and the movable rod 21 pushes out the metal strip spring on the surface of the guide block 6 to complete the unloading work (the movable rod 21 can be replaced by an electric telescopic rod, so that the device can perform automatic unloading).

[0046] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bending tool for processing an arc surface of a special-shaped spring, comprising a base (1), characterized in that: A first support plate (2) is fixedly installed in the middle of the base (1), a second support plate (3) is fixedly connected to the rear side of the base (1), a support seat (4) is fixedly connected to the left side of the base (1), a transmission assembly (12) is installed between the second support plate (3) and the first support plate (2), a pressing assembly (7) is installed at the front end of the transmission assembly (12), a pressing rod (8) is connected to the bottom of the pressing assembly (7), a first wedge block (9) is connected to the left side of the pressing assembly (7), a slide plate (10) is slidably installed inside the first support plate (2), a second wedge block (11) is fixedly connected to the right side of the slide plate (10), a cutting knife (15) is fixedly connected to the bottom of the slide plate (10), the slide plate (10) is connected to the first support plate (2) via a second spring (14), a guide block (6) is installed on the right side of the support seat (4), a guide groove (5) is provided inside the support seat (4), an extrusion groove (16) is provided on the surface of the guide block (6), and the position of the extrusion groove (16) corresponds to the position of the cutting knife (15); A slide groove (13) is provided above the first support plate (2), the pressing assembly (7) comprises a movable block (701) slidably mounted inside the slide groove (13), a connecting frame (702) is fixedly connected below the movable block (701), an electric push rod (703) is fixedly arranged inside the connecting frame (702), a first spring (704) is fixedly connected below the electric push rod (703), a cross plate (705) is fixedly connected below the first spring (704), a pressing plate (706) is fixedly arranged below the front end of the cross plate (705), the pressing rod (8) and the pressing plate (706) are rotatably connected, and the position of the pressing rod (8) corresponds to the position of the guide block (6); The transmission assembly (12) comprises a motor (1201) fixedly mounted on the upper left side of the second support plate (3); a first synchronous wheel (1202) is fixedly connected to the output shaft of the motor (1201); a first damping pad (1203) is fixedly connected to the outer side of the first synchronous wheel (1202); a second synchronous wheel (1204) is rotatably mounted in the middle of the second support plate (3); a second damping pad (1205) is fixedly connected to the outer side of the second synchronous wheel (1204); a convex rod (1206) is fixedly arranged on the surface of the second synchronous wheel (1204); a movable frame (1209) is arranged on the outer side of the convex rod (1206); and the movable frame (1209) and the movable block (701) are fixedly connected; The movable frame (1209) and the movable block (701) form a reciprocating sliding structure with the first support plate (2) via the protruding rod (1206) and the second synchronous wheel (1204), and the outer wall of the rear half of the movable block (701) and the inner wall of the slide groove (13) are in contact with each other; The front end of the movable frame (1209) is fixedly connected to a fixed cylinder (1207), a guide rod (1208) is provided inside the fixed cylinder (1207), and protrusions (1210) are fixedly connected to the left and right sides of the guide rod (1208), and the protrusions (1210) and the first support plate (2) are fixedly connected, and the movable frame (1209) forms a sliding structure between the fixed cylinder (1207) and the guide rod (1208).

2. According to claim 1, a bending tool for processing an arc surface of a special-shaped spring, characterized in that: The base (1), the first support plate (2), the second support plate (3) and the support seat (4) are integrally formed; the first support plate (2) and the second support plate (3) are parallel to each other, and the first support plate (2) and the base (1) are perpendicular to each other.

3. According to claim 1, a bending tool for processing an arc surface of a special-shaped spring, characterized in that: A movable rod (21) is slidably mounted in the middle of the first support plate (2), a connecting handle (22) is fixedly connected to the surface of the movable rod (21), and a gap exists between the movable rod (21) and the guide block (6).

4. According to claim 2, a bending tool for processing an arc surface of a special-shaped spring is characterized in that: A limit block (20) is slidably mounted inside the support seat (4); the limit block (20) and the guide block (6) are fixedly connected; a baffle (18) is fitted at the front end of the limit block (20); a lifting groove (19) is provided on the surface of the baffle (18); a limit rod (17) is fixedly connected to the rear side of the baffle (18); and the limit rod (17) is fitted inside the support seat (4).

5. According to claim 1, a bending tool for processing an arc surface of a special-shaped spring, characterized in that: The position of the first wedge block (9) corresponds to the position of the second wedge block (11), and the left side of the first wedge block (9) and the right side of the second wedge block (11) are both provided with chamfered surfaces, and the chamfered surface on the left side of the first wedge block (9) and the chamfered surface on the right side of the second wedge block (11) have the same inclination angle, and the slide plate (10) and the cutting knife (15) form a telescopic structure through the first wedge block (9) and the second wedge block (11) and the guide block (6).

6. According to claim 4, a bending tool for processing an arc surface of a special-shaped spring is characterized in that: The baffle plate (18) forms a sliding structure with the support seat (4) through the limiting rod (17), and the guide block (6) forms a snap-fit ​​structure with the support seat (4).

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