Four-axis numerical control spring press
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PINGDINGSHAN XINANDA POWER TECH CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-06-09
Smart Images
Figure CN224333350U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spring contact finger processing technology, specifically a four-axis CNC compression spring machine. Background Technology
[0002] Spring contacts are a new type of electrical connection product with advantages such as simple structure, convenient assembly, multiple contact points, good conductivity, strong current carrying capacity, and low wear. Therefore, they are widely used in high-voltage switches, high-speed rail, oil exploration and testing equipment, and new energy vehicles. In the process of forming spring contacts, to compress and shape the spring contact wire while improving processing efficiency, a four-axis CNC spring compression machine is required. This machine uses four-axis linkage control technology to precisely control the feeding, winding, cutting, and forming processes of the spring contact wire. Existing technology mainly includes four-axis CNC spring compression machines... The straightening mechanism, feeding mechanism, diameter changing mechanism, pitch changing mechanism, cutting mechanism, control system, and operation interface are all controlled by a four-dimensional precision computer. They use industrial-grade dedicated control chips and Pentium central processors to work in parallel. Through the cooperation of various structures, the four-axis CNC spring compression machine can work efficiently and accurately. However, in some four-axis CNC spring compression machines, the cut spring contact fingers fall directly into the collection box below. The unloading position of the spring contact fingers is close to the spring compression component, which can easily cause the spring contact fingers to fall onto the surface of the spring compression component and affect its operation. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a four-axis CNC compression spring machine. The machine uses a feeding clamp to drive the cut spring contact to move forward a certain distance before falling. The feeding position of the spring contact is far away from the compression spring component, which reduces the probability of the spring contact falling onto the surface of the compression spring component and affecting the operation of the compression spring component. This can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a four-axis CNC compression spring machine, including a worktable, a four-axis compression spring machine housing on the upper surface of the worktable, a CNC panel on the end of the mounting bracket on the right side of the worktable, and a feeding mechanism;
[0005] The unloading mechanism includes a rotating shell and unloading clamps. The rotating shell is rotatably connected to the upper surface of the four-axis compression spring machine housing. The unloading clamps are longitudinally slidably connected inside the elastically limited rotating shell. The two symmetrical unloading clamps are installed together. The unloading clamps drive the cut spring contact to move forward a certain distance before falling. Compared with the spring contact falling directly after being cut, the unloading position of the spring contact is farther away from the compression spring component, reducing the probability of the spring contact falling onto the surface of the compression spring component and affecting the operation of the compression spring component, making the working process of the four-axis CNC compression spring machine smoother.
[0006] Furthermore, the feeding mechanism also includes a slider, a reciprocating screw, a motor, and a rotating plate. The motor is located at the rear end of the bottom wall of the rotating shell, and the front end of the motor's output shaft is provided with a reciprocating screw. The front end of the reciprocating screw is rotatably connected to the inner front wall of the rotating shell. The outer arc surface of the reciprocating screw is threadedly connected to the slider, which is longitudinally slidably connected to the inside of the rotating shell. The rotating plates are respectively located at the middle of the opposite inner sides of the two feeding clamping plates. The elastically limited rotating plates are rotatably connected to the slider. The input end of the motor is electrically connected to the output end of the controller inside the CNC panel to adjust the front and rear positions of the feeding clamping plates.
[0007] Furthermore, the feeding mechanism also includes an arc-shaped block and a front top block. The arc-shaped block is respectively disposed on the front end of the opposite inner side of the two feeding clamping plates. The front top block is disposed on the front end of the top wall of the rotating shell. The front top block is located between the two feeding clamping plates. The rear ends of the left and right sides of the front top block are both inclined surfaces. The arc-shaped block is installed in conjunction with the front top block so that the included angle increases when the two feeding clamping plates move forward to the designated position.
[0008] Furthermore, the feeding mechanism also includes rear top blocks, which are respectively disposed at the rear end of the top wall of the rotating shell. The feeding clamping plate is located between the two rear top blocks. The front ends of the opposite inner surfaces of the two rear top blocks are inclined, so that the included angle of the two feeding clamping plates increases when they move to the designated position.
[0009] Furthermore, the upper surface of the four-axis compression spring housing is provided with a support column, the upper end of the support column is vertically slidably connected to the slide groove at the rear end of the rotating housing, the outer arc surface of the support column is movably fitted with a spring, the upper end of the spring is fixedly connected to the support column isolating plate, the lower end of the spring contacts the bottom wall of the slide groove of the rotating housing, the lower surface of the rotating housing is provided with a pin, and the upper surface of the four-axis compression spring housing is provided with insertion holes, which are installed in conjunction with the pins to limit the position of the rotating housing.
[0010] Furthermore, it also includes rubber pads, which are respectively disposed on the lower ends of the opposite inner sides of the two vertical plates of the feeding clamp, to increase the friction of the surface of the clamping part of the feeding clamp.
[0011] Furthermore, the upper surface of the slider is provided with a connecting column, and the rotating plates are rotatably connected to the outer arc surface of the connecting column. The outer arc surface of the connecting column is movably fitted with a torsion spring. One end of the torsion spring near the center of the connecting column is fixedly connected to the adjacent rotating plate, and the other end of the torsion spring is fixedly connected to the limiting plate on the outer arc surface of the connecting column, providing support and elastic limiting for the rotation of the feeding clamp plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This four-axis CNC compression spring machine has the following advantages:
[0013] By using the feeding clamp to move the cut spring contact finger forward a certain distance before it falls, compared to the spring contact finger falling directly after being cut, the feeding position of the spring contact finger is farther away from the compression spring component, reducing the probability of the spring contact finger falling onto the surface of the compression spring component and affecting the operation of the compression spring component, making the working process of the four-axis CNC compression spring machine smoother. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the CNC panel of this utility model;
[0016] Figure 3 This is a schematic diagram of the exploded structure of the feeding mechanism of this utility model;
[0017] Figure 4 This is a side view sectional diagram of the feeding mechanism of this utility model;
[0018] Figure 5 This is an enlarged structural diagram of point A in this utility model.
[0019] In the diagram: 1. Workbench, 2. Four-axis compression spring housing, 3. CNC panel, 4. Unloading mechanism, 41. Rotating shell, 42. Unloading clamping plate, 43. Slider, 44. Reciprocating screw, 45. Motor, 46. Rotating plate, 47. Arc block, 48. Front top block, 49. Rear top block, 5. Support column, 6. Spring, 7. Insertion hole, 8. Insertion post, 9. Rubber pad, 10. Connecting post, 11. Torsion spring. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-5This embodiment provides a technical solution: a four-axis CNC spring compression machine, including a worktable 1, providing space for the four-axis CNC spring compression components. The upper surface of the worktable 1 is provided with a four-axis spring compression machine housing 2, inside which are four-axis spring compression components. The machine adopts a commonly used four-axis spring compression machine, including a straightening mechanism: located between the material rack and the feeding rollers, consisting of two sets of straightening rollers, the purpose of which is to eliminate the original bending deformation of the steel wire, ensuring that the steel wire can enter the forming machine straight, thereby improving the accuracy of the spring coiling; a feeding mechanism: relying on one or two pairs of feeding wheels to press the steel wire, and driving the steel wire forward in a straight line through the rotation of the feeding wheels, the rotation of the feeding wheels is driven by a sector-shaped incomplete gear, and the feeding length is determined by the number of rotations of the feeding wheels; and a diameter changing mechanism: a mechanism for controlling the outer diameter of the spring, consisting of two push rods and a diameter changing cam that drives the push rods, producing cylindrical springs. When producing springs, the position of the push rod is adjusted to match the outer diameter of the spring. When producing variable diameter springs, the push rod extends and retracts in the tool holder. The push rod is driven by the variable diameter cam to achieve the purpose of producing various variable diameter springs. Pitch changing mechanism: The mechanism that controls the spring pitch has two methods: one is through the combination of pitch cutter and pitch cam. The pitch cam controls the effective number of turns of the spring, and the pitch cutter adjusts the spring height. The other is through cam transmission linkage, which pushes the pitch cutter out of the machine to adjust the pitch. Cutting mechanism: The mechanism that cuts the steel wire after winding and forming. The cutting action is completed by the cutter and the core to ensure that the spring can be accurately cut after forming. The mounting bracket end on the right side of the worktable 1 is equipped with a CNC panel 3. The CNC panel 3 is equipped with a controller. It adopts four-axis high-precision computer control and uses industrial-grade special control chip and Pentium central processor to work in parallel. It also includes a feeding mechanism 4.
[0022] The unloading mechanism 4 includes a rotating shell 41 and unloading clamping plates 42. The rotating shell 41 is rotatably connected to the upper surface of the four-axis compression spring machine housing 2. The unloading clamping plates 42 are longitudinally slidably connected inside the elastically limited rotating shell 41. The two symmetrical unloading clamping plates 42 are installed together. The unloading clamping plates 42 clamp the cut spring contact finger and move it forward a certain distance before releasing it, preventing the cut spring contact finger from falling directly onto the surface of the compression spring component and affecting the normal operation of the compression spring component. This makes the processing of the spring contact finger smoother. By adjusting the angle of the rotating shell 41, the position of the unloading clamping plates 42 can be changed, preventing the unloading clamping plates 42 from obstructing the inspection and maintenance of the compression spring component. The unloading mechanism 4 also includes a slider 43, a reciprocating screw 44, a motor 45, and a rotating plate 46. Motor 45 is located at the rear end of the bottom wall of rotating housing 41. A reciprocating screw 44 is located at the front end of the output shaft of motor 45. The front end of the reciprocating screw 44 is rotatably connected to the inner front wall of rotating housing 41. A slider 43 is threadedly connected to the outer arc surface of the reciprocating screw 44. The slider 43 is longitudinally slidably connected inside rotating housing 41. Rotating plates 46 are respectively located at the middle of the opposite inner sides of the two unloading clamping plates 42. The elastically limited rotating plates 46 are rotatably connected to the slider 43. The input end of motor 45 is electrically connected to the output end of the internal controller of CNC panel 3. Motor 45 is started by the internal controller of CNC panel 3. The output shaft of motor 45 drives the reciprocating screw 44 to rotate. Through the threaded connection between the reciprocating screw 44 and slider 43, slider 43 is driven to move back and forth reciprocally. The rotating plates 46 rotate... Under connection, the feeding clamp 42 also moves back and forth. The feeding mechanism 4 also includes an arc-shaped block 47 and a front top block 48. The arc-shaped block 47 is respectively set on the front end of the opposite inner side of the two feeding clamp 42 horizontal plates. The front top block 48 is set on the front end of the top wall of the rotating shell 41. The front top block 48 is located between the two feeding clamp 42 horizontal plates. The rear ends of the left and right sides of the front top block 48 are both inclined. The arc-shaped block 47 is installed in conjunction with the front top block 48. During the forward movement of the feeding clamp 42, when the arc-shaped block 47 contacts the front top block 48, as the feeding clamp 42 continues to move forward, the cooperation between the arc-shaped block 47 and the inclined surface of the front top block 48 applies a force to the front end of the horizontal plate of the feeding clamp 42, causing the front ends of the two feeding clamp 42 to separate from each other, releasing the clamping of the spring contact finger, so that... The spring contact finger falls into the external collection box. The feeding mechanism 4 also includes a rear top block 49, which is respectively set at the rear end of the top wall of the rotating shell 41. The horizontal plates of the feeding clamp 42 are located between the two rear top blocks 49. The front ends of the opposite inner surfaces of the two rear top blocks 49 are both inclined. During the rearward movement of the feeding clamp 42, after the feeding clamp 42 contacts the inclined surface of the rear top block 49, as the feeding clamp 42 continues to move backward, the inclined surface of the rear top block 49 applies a force to the rear end of the feeding clamp 42, pushing the feeding clamp 42 to rotate around the connecting column 10. The rear ends of the two feeding clamps 42 approach each other, and the front ends of the two feeding clamps 42 separate relative to each other. As the metal wire is compressed and formed, the front end of the metal wire gradually moves forward and enters between the two feeding clamps 42.The upper surface of the four-axis compression spring housing 2 is provided with a support column 5. The limiting plate at the upper end of the support column 5 is vertically slidably connected to the slide groove at the rear end of the rotating housing 41. A spring 6 is movably sleeved on the outer arc surface of the support column 5. The upper end of the spring 6 is fixedly connected to the limiting plate of the support column 5, and the lower end of the spring 6 contacts the bottom wall of the slide groove of the rotating housing 41. A pin 8 is provided in the middle of the lower surface of the rotating housing 41. The upper surface of the four-axis compression spring housing 2 is provided with insertion holes 7. The insertion holes 7 and the pin 8 are fitted together. During operation, the rotating housing 41 is in a longitudinal position. When it is necessary to maintain the compression spring components inside the four-axis compression spring housing 2, the unloading clamp 42 is moved to the maximum forward position. It is only necessary to overcome the elastic force of the spring 6 and pull the rotating housing 41 upward to make the pin 8 leave the insertion hole 7 on the front side. At this time, the rotating housing 41 can be rotated 90 degrees counterclockwise. Then, the rotating housing 41 is released. Under the action of the elastic force of the spring 6, the rotating housing 41 moves downward and the pin 8 is inserted into the insertion hole 7 on the right side. The rotating shell 41 is kept rotating laterally. The vertical plate of the feeding clamp 42 is located on the right side of the four-axis compression spring housing 2 to prevent the feeding clamp 42 from obstructing the maintenance of the compression spring components. It also includes rubber pads 9, which are respectively set at the lower ends of the opposite inner surfaces of the vertical plates of the two feeding clamps 42, increasing the friction on the surface of the feeding clamp 42 and improving the clamping firmness of the feeding clamp 42 on the spring contact fingers. The upper surface of the slider 43 is provided with a connecting post 10. The rotating plates 46 are rotatably connected to the outer arc surface of the connecting post 10. Torsion springs 11 are movably sleeved on the outer arc surface of the connecting post 10. One end of the torsion spring 11 near the center of the connecting post 10 is fixedly connected to the adjacent rotating plate 46, and the other end of the torsion spring 11 is fixedly connected to the limiting plate on the outer arc surface of the connecting post 10. The relative rotation of the connecting post 10 and the rotating plate 46 provides support for the rotation of the feeding clamp 42, and the torsion springs 11 limit the included angle of the two feeding clamps 42.
[0023] The working principle of the four-axis CNC spring compression machine provided by this utility model is as follows: During the spring contact finger processing, the metal wire is placed into the feeding mechanism of the four-axis spring compression machine housing 2. Under the control of the controller inside the CNC panel 3, the wire feeding mechanism transports the metal wire to the processing area. Through the cooperation of the mold, diameter changing mechanism and pitch changing mechanism of the four-axis spring compression machine housing 2, it is compressed into a spring shape. After forming, the cutting mechanism cuts the spring according to the preset length. During the spring compression process, the motor 45 is started by the controller inside the CNC panel 3. The output shaft of the motor 45 drives the reciprocating screw 44 to rotate. Through the threaded connection between the reciprocating screw 44 and the slider 43, the slider 43 is driven to move back and forth. During the rotation of the rotating plate 46... Next, the unloading clamp 42 also moves back and forth. During the movement of the unloading clamp 42, the torsion spring 11 limits the included angle of the two unloading clamps 42. Under the control of the controller inside the CNC panel 3, the time required for the slider 43 to move back and forth once is the same as the processing time of a single spring finger. During the compression forming process of the spring finger, the unloading clamp 42 moves backward. After the unloading clamp 42 contacts the inclined surface of the rear top block 49, as the unloading clamp 42 continues to move backward, the inclined surface of the rear top block 49 applies a force to the rear end of the unloading clamp 42, pushing the unloading clamp 42 to rotate around the connecting column 10. The rear ends of the two unloading clamps 42 approach each other, and the front ends of the two unloading clamps 42 separate relative to each other. As the metal... In the wire compression forming process, the front end of the metal wire gradually moves forward and enters between the two feeding clamps 42. When the slider 43 moves to the rear limit position of the reciprocating screw 44, the spring contact finger compression forming is completed. At this time, as the reciprocating screw 44 continues to rotate, the slider 43 moves forward and performs a cutting operation. As the feeding clamps 42 move forward, under the torque of the torsion spring 11, the front ends of the two feeding clamps 42 move closer to each other to clamp the spring contact finger. After the spring contact finger is cut, it moves forward with the feeding clamps 42. When the arc block 47 contacts the front top block 48, as the feeding clamps 42 continue to move forward, the cooperation between the inclined surfaces of the arc block 47 and the front top block 48 applies a force to the front end of the horizontal plate of the feeding clamps 42, causing... The front ends of the two feeding clamps 42 separate, releasing the clamp on the spring contact finger and allowing the spring contact finger to fall into the external collection box. During operation, the rotating shell 41 is in a longitudinal position. When maintenance is required on the spring components inside the four-axis spring compression machine housing 2, the feeding clamp 42 moves to the maximum forward position. Simply overcome the elastic force of the spring 6 to lift the rotating shell 41 upward, so that the insertion post 8 leaves the front insertion hole 7. At this time, the rotating shell 41 can be rotated counterclockwise by 90 degrees, and then the rotating shell 41 is released. Under the elastic force of the spring 6, the rotating shell 41 moves downward, and the insertion post 8 is inserted into the insertion hole 7 on the right side, so that the rotating shell 41 keeps rotating laterally. The vertical plate of the feeding clamp 42 is located on the right side of the four-axis spring compression machine housing 2 to prevent the feeding clamp 42 from obstructing the maintenance of the spring components.
[0024] It is worth noting that the motor 45 disclosed in the above embodiments can be freely configured according to the actual application scenario, and it is recommended to use the 3M57-42A stepper motor.
[0025] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A four-axis CNC compression spring machine, comprising a worktable (1), a four-axis compression spring machine housing (2) provided on the upper surface of the worktable (1), and a CNC panel (3) provided at the end of the mounting bracket on the right side of the worktable (1), characterized in that: It also includes the feeding mechanism (4); The feeding mechanism (4) includes a rotating shell (41) and a feeding clamping plate (42). The rotating shell (41) is rotatably connected to the upper surface of the four-axis compression spring housing (2). The feeding clamping plate (42) is longitudinally slidably connected inside the elastically limited rotating shell (41). The two feeding clamping plates (42) are symmetrically installed on the left and right.
2. The four-axis CNC compression spring machine according to claim 1, characterized in that: The feeding mechanism (4) also includes a slider (43), a reciprocating screw (44), a motor (45), and a rotating plate (46). The motor (45) is located at the rear end of the bottom wall of the rotating shell (41). The output shaft of the motor (45) is provided with a reciprocating screw (44). The front end of the reciprocating screw (44) is rotatably connected to the front inner wall of the rotating shell (41). The outer arc surface of the reciprocating screw (44) is threadedly connected to the slider (43). The slider (43) is longitudinally slidably connected to the inside of the rotating shell (41). The rotating plate (46) is respectively located at the middle of the opposite inner side of the two feeding clamps (42). The elastically limited rotating plate (46) is rotatably connected to the slider (43). The input end of the motor (45) is electrically connected to the output end of the controller inside the CNC panel (3).
3. A four-axis CNC compression spring machine according to claim 2, characterized in that: The feeding mechanism (4) further includes an arc-shaped block (47) and a front top block (48). The arc-shaped block (47) is respectively set on the front end of the opposite inner side of the two feeding clamping plates (42). The front top block (48) is set on the front end of the top wall of the rotating shell (41). The front top block (48) is located between the two feeding clamping plates (42). The rear ends of the left and right sides of the front top block (48) are both inclined surfaces. The arc-shaped block (47) is installed in conjunction with the front top block (48).
4. A four-axis CNC compression spring machine according to claim 2, characterized in that: The feeding mechanism (4) also includes a rear top block (49), which is respectively located at the rear end of the top wall of the rotating shell (41). The horizontal plate of the feeding clamp (42) is located between the two rear top blocks (49), and the front ends of the opposite inner surfaces of the two rear top blocks (49) are inclined surfaces.
5. A four-axis CNC compression spring machine according to claim 1, characterized in that: The upper surface of the four-axis compression spring housing (2) is provided with a support column (5). The limiting plate at the upper end of the support column (5) is vertically slidably connected to the slide groove at the rear end of the rotating shell (41). A spring (6) is movably sleeved on the outer arc surface of the support column (5). The upper end of the spring (6) is fixedly connected to the limiting plate of the support column (5). The lower end of the spring (6) is in contact with the bottom wall of the slide groove of the rotating shell (41). A plug (8) is provided in the middle of the lower surface of the rotating shell (41). The upper surface of the four-axis compression spring housing (2) is provided with a hole (7). The hole (7) is installed in conjunction with the plug (8).
6. A four-axis CNC compression spring machine according to claim 1, characterized in that: It also includes rubber pads (9), which are respectively disposed on the lower ends of the opposite inner sides of the vertical plates of the two feeding clamps (42).
7. A four-axis CNC compression spring machine according to claim 2, characterized in that: The upper surface of the slider (43) is provided with a connecting post (10), and the rotating plates (46) are rotatably connected to the outer arc surface of the connecting post (10). The outer arc surface of the connecting post (10) is movably fitted with torsion springs (11). One end of the torsion spring (11) near the center of the connecting post (10) is fixedly connected to the adjacent rotating plate (46), and the other end of the torsion spring (11) is fixedly connected to the limiting plate on the outer arc surface of the connecting post (10).