Spring machining device and method

Abstract

The invention discloses a spring machining device, and belongs to the field of grinding equipment. A spring machining device comprises a positioning platform, and further comprises a bracket, a spring, a first clamping device, a second clamping device and a third clamping device, the clamping assembly is fixedly mounted on the bracket and is used for clamping the spring; the positioning assembly is arranged on the positioning platform in a sliding mode, and the axis of the positioning assembly and the axis of the spring are collinear; the clamping assembly can rotate and adapt according to the horizontal angle of the spring placed on the supporting shaft and reset after clamping, it is guaranteed that the center of the spring and the center of the mandrel are collinear, manual alignment is not needed, and the cutting efficiency of the spring is improved; the expansion plate is used for tensioning and supporting the spring, and supporting force is provided for the vertical cutting direction; the inner wall of the spring is polished through an expansion plate attached to the inner wall of the spring, and heat treatment residues of the spring are removed; and heat treatment residues generated after the expansion plate and the spring act are blown away from the spring.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding equipment, and in particular to a spring processing device and method. Background Art

[0002] Springs are essential parts of many devices and are widely used inside many devices, including objects, to achieve shock absorption, reciprocating and other effects. Spring machines refer to mechanical equipment for producing springs, which are divided into compression spring machines, tension spring machines, universal machines, disc machines and special spring machines according to their functional characteristics. In the processing of some medium and large springs, the steel bars are first cut into sections, and then the ends of the steel bars are forged to make springs. After the springs are made, a plane is cut out at both ends of the spring to facilitate the installation and use of the springs, so the cut planes need to be polished.

[0003] In the prior art, before grinding, it is usually necessary to manually transfer the quenched spring to the processing table of the cutting machine, and then calibrate the processing station of the spring, which not only reduces the efficiency of cutting and grinding, but also increases manual work consumption; in addition, the spring is heat-treated before cutting, and heat treatment residues will remain, which requires manual grinding of the surface, but the residue on the inner wall is not easy to clean, further delaying the efficiency of the spring entering the next process. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, the spring processing station needs to be calibrated after being manually transferred to the material table of the cutting machine, which not only reduces the grinding efficiency but also increases the manual workload; and the spring before cutting is heat treated, and heat treatment residues will remain, which requires manual surface grinding, but the residues on the inner wall are not easy to clean, further delaying the efficiency of the spring entering the next process, and a spring processing device and method are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A spring processing device includes a positioning platform and also includes: a bracket, which is slidably connected to the positioning platform; a clamping assembly fixedly installed on the bracket, and the clamping assembly is used to clamp the spring; a positioning assembly slidably arranged on the positioning platform, and the axis of the positioning assembly is colinear with the axis of the spring.

[0007] Preferably, the bracket includes two groups of positioning frames and support shafts rotatably arranged in the positioning frames, and two groups of electric slides are symmetrically arranged at the bottom of the bracket, and the electric slides are fixedly connected to the surface of the positioning platform.

[0008] In order to prevent the spring from being displaced during the cutting process, the clamping assembly further includes two groups of symmetrically arranged cylinders, and the bracket is provided with a rotating assembly for driving the cylinders to rotate; wherein the telescopic rod end of the cylinder is fixedly connected with a clamping plate, the clamping plate is arranged as an arc plate structure, and the arc plate has at least one tangent with the spring.

[0009] In order to reduce the manual calibration process of the spring cutting station before cutting, further, a rotating assembly is provided at the bottom of the cylinder, the rotating assembly includes a rotating shaft and a support plate connected to the top of the rotating shaft, the cylinder is fixedly mounted on the upper surface of the support plate, a fixing frame is fixedly mounted on one side of the positioning frame, and the rotating shaft is rotatably mounted in the fixing frame through a bearing.

[0010] In order to achieve automatic control and match the rotation angle with the placement angle of the spring, further, the two groups of the rotating shafts are connected through a second synchronous belt pulley transmission, one end of one group of the rotating shafts is fixedly installed with a first synchronous belt pulley, the bottom surface of the positioning platform is slidably connected with a first motor through a linear guide rail, and the output shaft end of the first motor is also fixedly installed with a first synchronous belt pulley. The two groups of the first synchronous belt pulleys are connected in transmission, and a bracket is fixedly installed on one side of the positioning platform, and a camera is installed on the top of the bracket, and the camera is electrically connected to the first motor.

[0011] Preferably, the positioning assembly includes a core shaft and four groups of expansion plates elastically connected to the surface of the core shaft through compression springs. The core shaft is configured as a vertebral structure, and the taper of the expansion plates is matched with the taper of the core shaft.

[0012] In order to ensure stable support during the movement of the core shaft, further, a column is fixedly installed on the positioning platform, a guide plate is fixedly installed on the top of the column, and a sliding groove matching the guide plate is opened at the bottom of the core shaft.

[0013] Since the cutting direction is from top to bottom, the horizontally set clamping force cannot provide vertical support force for the spring. Furthermore, the positioning assembly also includes a screw rod that drives the core shaft to approach the spring, and the screw rod and the core shaft are fixedly connected. A support ear plate is fixedly installed on the positioning platform, and an internal threaded sleeve is rotatably connected in the support ear plate. The support ear plate passes through and is threadedly connected in the internal threaded sleeve. A third synchronous pulley is fixedly installed at one end of the internal threaded sleeve, and a second motor is fixedly installed on the positioning platform. A third synchronous pulley is also fixedly installed on the output shaft end of the second motor, and the two sets of the third synchronous pulleys are transmission connected.

[0014] In order to remove the heat treatment residues removed after the friction between the expansion plate and the inner wall of the spring, further, two groups of piston rods are symmetrically arranged at both ends of the screw, and the piston rods pass through the positioning platform and extend to the bottom of the positioning platform. A guide groove is provided in the positioning platform at the position where the piston rod passes through, and a bellows is fixedly installed at the bottom of the positioning platform, and a piston plate is provided in the bellows. The piston rod extends to the interior of the bellows away from one end of the screw and is fixedly connected to the piston plate. The bellows is connected to an air outlet pipe on the side away from the piston rod, and a one-way valve is provided in the air outlet pipe.

[0015] A spring processing method comprises the following steps:

[0016] Step 1: Place the heat-treated spring on the bracket so that the spring is placed horizontally in the direction of rotation;

[0017] Step 2: A camera is set on the positioning platform, and the horizontal angle of the spring is detected by the camera. The collected signal is converted by PLC and transmitted to the first motor, and the first motor is started to drive the two sets of cylinders to rotate until the clamping plate and the spring to be cut are parallel;

[0018] Step 3: Start the cylinder to drive the clamping plate to clamp the spring and then reset it, so that the center line of the spring and the center line of the mandrel are in line;

[0019] Step 4: Start the second motor to drive the rotating shaft and the core shaft to rotate. The rotating shaft approaches the spring to be cut during the rotation until the core shaft and the expansion plate penetrate the inside of the spring to be cut. During this process, the clamping plate is in a clamped state. The expansion plate moves forward against the inner wall of the spring to grind off the heat treatment residue. At the same time, the piston rod moves with the core shaft, driving the piston plate in the bellows to squeeze the air in the bellows, and pushes the air out through the air outlet pipe, blowing the heat treatment residue after the expansion plate and spring act on it away from the spring.

[0020] Compared with the prior art, the present invention provides a spring processing device and method, which have the following beneficial effects:

[0021] 1. The spring processing device, through the use of a rotatable clamping assembly, is electrically connected to a first motor for rotational drive by using a collection device, so that the clamping assembly can be rotated and adapted according to the horizontal angle of the spring placed on the support shaft, and reset after clamping, so as to ensure that the centers of the spring and the core shaft are in line, without manual alignment, thereby improving the cutting efficiency of the spring;

[0022] 2. The spring processing device is provided with a mandrel on one side of the bracket, and the mandrel is moved into the spring at the cutting station by the mandrel. An elastically connected expansion plate is provided on the surface of the mandrel. After the mandrel enters the spring, the expansion plate is used to tension and support the spring to provide support force in the vertical cutting direction;

[0023] 3. The spring processing device drives the mandrel to move in the direction of the spring by setting a screw rod, and uses a threaded connection structure to enable the mandrel to rotate when entering the spring, and uses an expansion plate that fits the inner wall of the spring to grind the inner wall of the spring to remove the heat treatment residue of the spring;

[0024] 4. The spring processing device is provided with a bellows at the bottom of the positioning platform. The piston rod is connected to the piston plate in the bellows. The piston rod drives the piston plate to move in the bellows as the core shaft moves, and the air is pushed out through the air outlet pipe, so that the heat treatment residue after the expansion plate and the spring act on are blown away from the spring.

[0025] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The clamping assembly in the present invention can be rotated and adapted according to the horizontal angle of the spring placed on the support shaft, and reset after clamping to ensure that the centers of the spring and the core shaft are in line, without the need for manual alignment, thereby improving the cutting efficiency of the spring; the spring is tensioned and supported by an expansion plate to provide support force in the vertical cutting direction; the inner wall of the spring is polished by an expansion plate that fits the inner wall of the spring to remove the heat treatment residue of the spring; the heat treatment residue after the expansion plate and the spring act is blown away from the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main three-dimensional structure of a spring processing device proposed by the present invention;

[0027] Figure 2 A schematic diagram of the three-dimensional structure of a rotating drive assembly of a clamping assembly of a spring processing device proposed by the present invention;

[0028] Figure 3 A schematic diagram of the three-dimensional structure of a cylinder support member of a spring processing device proposed by the present invention;

[0029] Figure 4 A schematic diagram of the three-dimensional structure of a positioning assembly of a spring processing device proposed by the present invention;

[0030] Figure 5 A schematic diagram of the elastic connection structure between the mandrel and the expansion plate of a spring processing device proposed by the present invention;

[0031] Figure 6 A partial cross-sectional structural schematic diagram of a positioning assembly of a spring processing device proposed by the present invention;

[0032] Figure 7 This is a bottom-up stereoscopic structural schematic diagram of a spring processing device proposed by the present invention;

[0033] Figure 8 This is a schematic diagram of the bellows driving structure of a spring processing device proposed by the present invention.

[0034] In the figure: 1. positioning platform; 2. electric slide; 3. positioning frame; 4. supporting shaft; 5. bracket; 6. camera; 7. first motor; 8. mounting seat; 9. linear guide; 10. first synchronous pulley; 11. second synchronous pulley; 12. rotating shaft; 13. cylinder; 14. clamping plate; 15. supporting plate; 16. fixing frame; 17. bearing; 18. core shaft; 19. expansion plate; 20. compression spring; 21. screw; 22. supporting ear plate; 23. internal threaded sleeve; 24. third synchronous pulley; 25. second motor; 26. guide plate; 27. column; 28. piston rod; 29. ​​bellows; 30. piston plate; 31. air outlet pipe; 32. one-way valve; 33. guide groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Example:

[0038] Reference Figure 1-Figure 8 A spring processing device includes a positioning platform 1, and also includes: a bracket, the bracket is slidably connected to the positioning platform 1; a clamping component fixedly installed on the bracket, the clamping component is used to clamp the spring; a positioning component slidably arranged on the positioning platform 1, the axis of the positioning component and the axis of the spring are collinear.

[0039] In this embodiment, a rotating support shaft 4 is provided as a support member that is in direct contact with the spring to be cut, so as to reduce the friction generated by the spring during movement as much as possible, and the support shaft 4 is connected by a positioning frame 3, and the entire bracket is movably set on the positioning platform 1 through an electric slide 2. After the cutting is completed, the carrier clamping assembly and the spring are moved to the unloading position and can be taken out manually.

[0040] It should be noted that the first motor 7 is connected to the linear guide rail 9 via the mounting seat 8, so as to ensure that the first motor 7 can move synchronously with the spring during the movement of the electric slide 2 to unload the spring.

[0041] A clamping assembly is fixedly mounted on the bracket, and the clamping assembly is used to clamp the spring; the clamping assembly includes two groups of symmetrically arranged cylinders 13, and the telescopic rod ends of the cylinders 13 are fixedly connected with clamping plates 14, and the clamping plates 14 are arranged as arc-shaped plate structures, and the arc-shaped plate has at least one tangent with the spring.

[0042] In this embodiment, two groups of symmetrical cylinders 13 and clamping plates 14 are provided at the output shaft ends of the cylinders 13. During the clamping action, the arc-shaped structure of the clamping plates 14 can effectively fit the outer wall of the spring, thereby improving the clamping effect.

[0043] A rotating assembly is provided at the bottom of the cylinder 13, and the rotating assembly includes a rotating shaft 12 and a support plate 15 connected to the top of the rotating shaft 12. The cylinder 13 is fixedly installed on the upper surface of the support plate 15. A fixing frame 16 is fixedly installed on one side of the positioning frame 3. The rotating shaft 12 is rotatably installed in the fixing frame 16 through a bearing 17, and the bearing 17 is set as a low-damping bearing. The two groups of rotating shafts 12 are connected by a second synchronous pulley 11, and one end of one group of rotating shafts 12 is fixedly installed with a first synchronous pulley 10. The bottom surface of the positioning platform 1 is slidably connected with a first motor 7 through a linear guide rail 9, and the output shaft end of the first motor 7 is also fixedly installed with a first synchronous pulley 10. The two groups of first synchronous pulleys 10 are connected by transmission. A bracket 5 is fixedly installed on one side of the positioning platform 1, and a camera 6 is installed on the top of the bracket 5. The camera 6 and the first motor 7 are electrically connected.

[0044] In this embodiment, a rotating component is arranged at the bottom of the cylinder 13, which can drive the cylinders 13 on both sides to rotate a certain angle based on the horizontal angle of the spring placed on the support shaft 4. It should be noted that a camera 6 is arranged on the positioning platform 1, and the horizontal angle of the spring placed on the support shaft 4 is collected by the camera 6. The collected data is converted by the PLC and transmitted to the first motor 7. The two groups of cylinders 13 are driven to rotate by the first motor 7, the first synchronous pulley 10 and the second synchronous pulley 11. After rotation, the clamping direction of the clamping plate 14 is perpendicular to the center line of the horizontally placed spring to be cut. The cylinder 13 is started to drive the clamping plate 14 to clamp the spring to be cut, and then reset. The spring is driven to move to the bottom of the cutting head via the electric slide 2.

[0045] It should be noted that the bearing 17 is configured as a low-damping bearing, which can not only drive the cylinder 13 to rotate, but also maintain a certain friction force after rotation, thereby eliminating the flexible connection error of the synchronous belt drive.

[0046] The positioning assembly can be passed through the center of the spring, and the positioning assembly is slidably arranged on the positioning platform 1, and the axis of the positioning assembly and the axis of the spring are colinear. The positioning assembly includes a core shaft 18 and four sets of expansion plates 19 elastically connected to the surface of the core shaft 18 through a compression spring 20. The core shaft 18 is set as a vertebral structure, and the taper of the expansion plate 19 matches the taper of the core shaft 18.

[0047] In this embodiment, an expansion plate 19 is provided on the surface of the core shaft 18. When the core shaft 18 penetrates into the interior of the spring, the elastic tension of the expansion plate 19 is utilized to provide support force for the spring, thereby preventing the spring from being deformed during the cutting process.

[0048] It should be noted that the core shaft 18 and the expansion plate 19 are both configured as a cone structure, and the end with a smaller diameter first enters the spring until the expansion plate 19 is completely in contact with the inner wall of the spring and is tensioned.

[0049] A column 27 is fixedly mounted on the positioning platform 1 , a guide plate 26 is fixedly mounted on the top of the column 27 , and a slide groove matching the guide plate 26 is provided at the bottom of the core shaft 18 .

[0050] In this embodiment, a column 27 is provided on the positioning platform 1, a guide plate 26 is connected to the top of the column 27, and the core shaft 18 and the guide plate 26 are slidably connected to ensure the structural stability of the core shaft 18 during the movement into the spring.

[0051] The positioning assembly also includes a screw 21 that drives the core shaft 18 to approach the spring. The screw 21 and the core shaft 18 are fixedly connected. A support ear plate 22 is fixedly installed on the positioning platform 1. An internal threaded sleeve 23 is rotatably connected inside the support ear plate 22. The support ear plate 22 passes through and is threadedly connected to the internal threaded sleeve 23. A third synchronous pulley 24 is fixedly installed at one end of the internal threaded sleeve 23. A second motor 25 is fixedly installed on the positioning platform 1. A third synchronous pulley 24 is also fixedly installed on the output shaft end of the second motor 25. The two sets of third synchronous pulleys 24 are transmission connected.

[0052] In this embodiment, a screw rod 21 is provided at one end of the core shaft 18. When the core shaft 18 needs to penetrate the spring, the second motor 25 is started, and the second motor 25 drives the third synchronous pulley 24 to drive the internal threaded sleeve 23 to rotate. The internal threaded sleeve 23 and the screw rod 21 are threadedly connected. Therefore, the second motor 25 can drive the screw rod 21 to move in the internal threaded sleeve 23, thereby moving the core shaft 18 and the expansion plate 19 into the spring.

[0053] Two groups of piston rods 28 are symmetrically arranged at both ends of the screw 21. The piston rod 28 passes through the positioning platform 1 and extends to the bottom of the positioning platform 1. A guide groove 33 is opened in the positioning platform 1 at the position where the piston rod 28 passes through. A bellows 29 is fixedly installed at the bottom of the positioning platform 1, and a piston plate 30 is arranged in the bellows 29. The piston rod 28 extends to the inside of the bellows 29 away from the screw 21 and is fixedly connected to the piston plate 30. The side of the bellows 29 away from the piston rod 28 is connected to an air outlet pipe 31, and a one-way valve 32 is arranged in the air outlet pipe 31.

[0054] In this embodiment, piston rods 28 are symmetrically arranged on both sides of the screw 21, and a guide groove 33 matching the piston rod 28 is opened in the positioning platform 1, which is used to guide the piston rod 28 when it moves with the core shaft 18. A bellows 29 is arranged at the bottom of the positioning platform 1, and the piston rod 28 is connected to the piston plate 30 in the bellows 29, thereby driving the piston plate 30 to squeeze the air in the bellows 29, and the air is pushed out through the air outlet pipe 31, so as to blow the heat treatment residue after the expansion plate 19 and the spring act away from the spring.

[0055] In the present invention, the heat-treated spring is placed on the bracket so that the spring is placed in a horizontal direction; the horizontal angle of the spring is detected by the camera 6 arranged on the positioning platform 1 and transmitted to the PLC, and the PLC converts the collected signal and transmits it to the first motor 7, and the first motor 7 is started to drive the two groups of cylinders 13 to rotate until the clamping plate 14 and the spring to be cut are parallel; the cylinder 13 is started to drive the clamping plate 14 to clamp the spring and then reset it, so that the center line of the spring and the center line of the core shaft 18 are in line; then, the second motor 25 is started, and the third motor 25 is used to rotate the spring. The transmission of the synchronous pulley 24 drives the rotating shaft 12 and the core shaft 18 to rotate. The rotating shaft 12 approaches the spring to be cut during the rotation. During this process, the clamping plate 14 is in a clamped state. Therefore, the expansion plate 19 rotates and moves against the inner wall of the spring, and the heat treatment residue can be polished off. At the same time, the piston rod 28 moves with the core shaft 18, driving the piston plate 30 in the bellows 29 to squeeze the air in the bellows 29, and pushes the air out through the air outlet pipe 31, so as to blow the heat treatment residue after the expansion plate 19 and the spring act away from the spring.

[0056] The present invention also provides a spring processing method, comprising the following steps:

[0057] Step 1: Place the heat-treated spring on the bracket so that the spring is placed horizontally in the direction of rotation;

[0058] Step 2: A camera 6 is provided on the positioning platform 1, and the horizontal angle of the spring is detected by the camera 6. The collected signal is converted by the PLC and transmitted to the first motor 7, and the first motor 7 is started to drive the two groups of cylinders 13 to rotate until the clamping plate 14 is parallel to the spring to be cut;

[0059] Step 3: Start the cylinder 13 to drive the clamping plate 14 to clamp the spring and then reset it, so that the center line of the spring and the center line of the core shaft 18 are in line;

[0060] Step 4: Start the second motor 25 to drive the rotating shaft 12 and the core shaft 18 to rotate. The rotating shaft 12 approaches the spring to be cut during the rotation until the core shaft 18 and the expansion plate 19 penetrate the inside of the spring to be cut. During this process, the clamping plate 14 is in a clamped state. The expansion plate 19 moves forward against the inner wall of the spring to grind off the heat treatment residue. At the same time, the piston rod 28 moves with the core shaft 18, driving the piston plate 30 in the bellows 29 to squeeze the air in the bellows 29, and pushes the air out through the air outlet pipe 31, blowing the heat treatment residue after the expansion plate 19 and the spring away from the spring.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spring processing device, comprising a positioning platform (1), characterized in that: Also includes: A bracket, the bracket being slidably connected to the positioning platform (1); A clamping assembly fixedly mounted on the bracket, the clamping assembly is used to clamp the spring; A positioning component is slidably arranged on a positioning platform (1), wherein the axis of the positioning component and the axis of the spring are colinear.

2. A spring processing device according to claim 1, characterized in that: The bracket comprises two groups of positioning frames (3) and a support shaft (4) rotatably arranged in the positioning frames (3); two groups of electric slides (2) are symmetrically arranged at the bottom of the bracket; the electric slides (2) are fixedly connected to the surface of the positioning platform (1).

3. A spring processing device according to claim 2, characterized in that: The clamping assembly comprises two groups of symmetrically arranged cylinders (13), and the bracket is provided with a rotating assembly for driving the cylinders (13) to rotate; The telescopic rod end of the cylinder (13) is fixedly connected with a clamping plate (14), and the clamping plate (14) is configured as an arc-shaped plate structure, and the arc-shaped plate and the spring have at least one tangent line.

4. A spring processing device according to claim 3, characterized in that: The rotating assembly comprises a rotating shaft (12) and a support plate (15) connected to the top of the rotating shaft (12); the cylinder (13) is fixedly mounted on the upper surface of the support plate (15); a fixing frame (16) is fixedly mounted on one side of the positioning frame (3); and the rotating shaft (12) is rotatably mounted in the fixing frame (16) via a bearing (17).

5. A spring processing device according to claim 4, characterized in that: The two groups of rotating shafts (12) are connected in transmission via a second synchronous pulley (11), one end of one group of rotating shafts (12) is fixedly mounted with a first synchronous pulley (10), the bottom surface of the positioning platform (1) is slidably connected with a first motor (7) via a linear guide rail (9), the output shaft end of the first motor (7) is also fixedly mounted with a first synchronous pulley (10), the two groups of the first synchronous pulleys (10) are connected in transmission, a bracket (5) is fixedly mounted on one side of the positioning platform (1), a camera (6) is mounted on the top of the bracket (5), and the camera (6) and the first motor (7) are electrically connected.

6. A spring processing device according to claim 1, characterized in that: The positioning assembly comprises a core shaft (18) and four groups of expansion plates (19) elastically connected to the surface of the core shaft (18) through compression springs (20); the core shaft (18) is configured as a vertebral structure; the taper of the expansion plates (19) matches the taper of the core shaft (18).

7. A spring processing device according to claim 6, characterized in that: A column (27) is fixedly mounted on the positioning platform (1), a guide plate (26) is fixedly mounted on the top of the column (27), and a sliding groove matching the guide plate (26) is provided at the bottom of the core shaft (18).

8. A spring processing device according to claim 6, characterized in that: The positioning assembly further comprises a screw rod (21) for driving the core shaft (18) to approach the spring, the screw rod (21) and the core shaft (18) being fixedly connected, a support ear plate (22) being fixedly mounted on the positioning platform (1), an internal threaded sleeve (23) being rotatably connected inside the support ear plate (22), the support ear plate (22) passing through and being threadedly connected inside the internal threaded sleeve (23), a third synchronous pulley (24) being fixedly mounted on one end of the internal threaded sleeve (23), a second motor (25) being fixedly mounted on the positioning platform (1), a third synchronous pulley (24) also being fixedly mounted on the output shaft end of the second motor (25), and two groups of the third synchronous pulleys (24) being transmission connected.

9. A spring processing device according to claim 8, characterized in that: Two groups of piston rods (28) are symmetrically arranged at both ends of the screw rod (21). The piston rods (28) penetrate the positioning platform (1) and extend to the bottom of the positioning platform (1). A guide groove (33) is provided in the positioning platform (1) at the position where the piston rod (28) penetrates. A bellows (29) is fixedly installed at the bottom of the positioning platform (1). A piston plate (30) is arranged in the bellows (29). One end of the piston rod (28) away from the screw rod (21) extends into the inside of the bellows (29) and is fixedly connected to the piston plate (30). The side of the bellows (29) away from the piston rod (28) is connected to an air outlet pipe (31), and a one-way valve (32) is arranged in the air outlet pipe (31).

10. A spring processing method, comprising a spring processing device according to any one of claims 1 to 9, characterized in that: The following steps are also included: Step 1: Place the heat-treated spring on the bracket so that the spring is placed horizontally in the direction of rotation; Step 2: A camera (6) is provided on the positioning platform (1), and the camera (6) is used to detect the horizontal angle of the spring. The collected signal is converted by the PLC and transmitted to the first motor (7). The first motor (7) is started to drive the two groups of cylinders (13) to rotate until the clamping plate (14) is parallel to the spring to be cut; Step 3: Start the cylinder (13) to drive the clamping plate (14) to clamp the spring and then reset it, so that the center line of the spring and the center line of the core shaft (18) are collinear; Step 4: Start the second motor (25) to drive the rotating shaft (12) and the core shaft (18) to rotate. The rotating shaft (12) approaches the spring to be cut during the rotation until the core shaft (18) and the expansion plate (19) penetrate the inside of the spring to be cut. During this process, the clamping plate (14) is in a clamping state. During the process of the expansion plate (19) moving forward against the inner wall of the spring, the heat treatment residue is polished off. At the same time, the piston rod (28) moves with the core shaft (18), driving the piston plate (30) in the bellows (29) to squeeze the air in the bellows (29), and push the air out through the air outlet pipe (31), so as to blow the heat treatment residue after the expansion plate (19) and the spring act away from the spring.

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