A machining device and machining process for a three-head variable-pitch conical tooth bar

Abstract

The application relates to a machining device and machining process of a three-head variable-pitch conical tooth bar, and relates to the three-head variable-pitch conical tooth bar machining technical field; the machining device of the three-head variable-pitch conical tooth bar comprises a device body, a rotating shaft, a rotating mechanism and a cutting mechanism are arranged on the device body, the rotating mechanism is used for driving the rotating shaft to rotate relative to the device body, the cutting mechanism is used for cutting the side wall of a workpiece in rotation, a feeding mechanism is further arranged on the device body, the feeding mechanism comprises a feeding frame, a feeding piece and a clamping assembly, the feeding piece is used for driving the feeding frame to move along the axis direction of the rotating shaft, the clamping assembly is arranged on the feeding frame and is used for clamping the workpiece on the rotating shaft, and the cutting mechanism is further used for cutting the end of the part, where three spiral surfaces on the workpiece are all machined, to separate the machined three-head variable-pitch conical tooth bar. The application has the effect of improving the machining efficiency of the three-head variable-pitch conical tooth bar.

Description

Technical Field

[0001] This application relates to the field of machining technology for three-head variable pitch conical threaded rods, and in particular to machining equipment and machining process for three-head variable pitch conical threaded rods. Background Technology

[0002] The three-head variable pitch conical toothed rod is a type of toothed rod with three helical grooves and a pitch that continuously changes along the generatrix of the cone. These precision parts possess advantages such as high strength and high fatigue resistance, and are therefore widely used in applications such as threaded connections in oil drilling tools and power transmission in precision drives.

[0003] An existing technology provides a machining device for a three-head variable pitch conical threaded rod, comprising a machine body, a rotating shaft, a rotating component, and a fixing mechanism mounted on the machine body. The rotating shaft is rotatably connected to the machine body, the rotating component drives the rotating shaft to rotate, and the fixing mechanism is mounted on the rotating shaft and used to clamp the workpiece to be machined. The machine body also includes a cutting mechanism for cutting the sidewall of the rotating workpiece to create a helical surface. In use, the workpiece is cut into multiple threaded rod blanks, which are then clamped by the fixing mechanism. The rotating component drives the rotating shaft to rotate together with the threaded rod blanks. During this process, the cutting mechanism cuts the sidewall of the rotating workpiece to create a helical surface. After the helical surface is machined, the rotating component drives the workpiece to rotate so that the next surface to be machined faces the cutting mechanism, and the next helical surface is machined, until all three helical surfaces are machined.

[0004] Regarding the aforementioned technologies, existing technologies require that the finished threaded rod blank be removed from the fixing mechanism before the next threaded rod blank can be fixed to the rotating shaft by the fixing mechanism to achieve the processing of the next threaded rod blank. This necessitates frequent replacement of the threaded rod blank by relevant personnel, thereby reducing the processing efficiency of the three-head variable pitch tapered threaded rod, and therefore needs to be improved. Summary of the Invention

[0005] To improve the machining efficiency of three-head variable pitch conical threaded rods, this application provides a machining equipment and machining process for three-head variable pitch conical threaded rods.

[0006] Firstly, the processing equipment for a three-head variable pitch tapered thread rod provided in this application adopts the following technical solution: A processing device for a three-head variable pitch conical dental bar includes a device body, on which a rotating shaft, a rotating mechanism, and a cutting mechanism are provided. The rotating mechanism drives the rotating shaft to rotate relative to the device body, and the rotating shaft is used to fix the workpiece to be processed. The cutting mechanism is used to cut the side wall of the rotating workpiece. The device body is also provided with a feeding mechanism, which includes a feeding frame, a feeding component, and a clamping assembly. The feeding component drives the feeding frame to move along the axial direction of the rotating shaft. The clamping assembly is disposed on the feeding frame and is used to clamp the workpiece on the rotating shaft. The cutting mechanism is also used to cut off the ends of the workpiece where all three helical surfaces have been processed, so as to separate the processed three-head variable pitch conical dental bar.

[0007] By adopting the above technical solution, compared with the existing technology of processing several toothed rod blanks one by one, which requires personnel to frequently replace the toothed rod blanks and thus reduces the processing efficiency of the toothed rod blanks, this application, through the setting of the feeding mechanism, enables the clamping component to clamp the workpiece after all three helical surfaces at the end of the workpiece have been processed. This allows the feeding frame driven by the feeding component to move the workpiece together, thereby enabling the cutting mechanism to cut off the end of the workpiece where all three helical surfaces have been processed and form a toothed rod. Therefore, it is not necessary to cut the workpiece to be processed into several toothed rod blanks before processing, and it is not necessary for personnel to replace the toothed rod blanks. This effectively increases the processing efficiency of three-head variable pitch tapered toothed rods and saves the time required to replace the toothed rod blanks.

[0008] Preferably, the cutting mechanism includes a wire cutting assembly and a moving assembly. The wire cutting assembly is used to cut a rotating workpiece, and the moving assembly is used to drive the wire cutting assembly to move along the axial direction of the rotation axis and in a direction perpendicular to the axial direction of the rotation axis.

[0009] By adopting the above technical solution and configuring the cutting mechanism, the moving component can drive the wire cutting component to move along the axis of the rotating shaft. This allows the wire cutting component to process a helical surface on the side wall of the workpiece under the action of its own movement and the rotation of the workpiece, thereby realizing the processing of the helical surface on the workpiece and ensuring the processing effect.

[0010] Preferably, the rotating shaft is further provided with a fixing mechanism, which is used to fix the workpiece to be processed on the rotating shaft and to release the fixing of the workpiece on the rotating shaft when the feeder moves.

[0011] By adopting the above technical solution and setting the fixing mechanism, relevant personnel can fix the workpiece to be processed on the rotating shaft through the fixing mechanism, and can cancel the fixing of the workpiece on the rotating shaft when the feeding rack moves, thereby facilitating the feeding rack to drive the workpiece.

[0012] Preferably, the feeding rack is further provided with a stabilizing mechanism, which includes a support frame, stabilizing wheels and a driving assembly. Several support frames and stabilizing wheels are provided and are correspondingly arranged, and are respectively located on different sides of the workpiece on the rotating shaft. One end of each support frame is rotatably connected to the feeding rack. The driving assembly is used to drive each support frame to rotate. Each stabilizing wheel is rotatably connected to the other side of the corresponding support frame and is used to abut against the side wall of the workpiece on the rotating shaft.

[0013] By adopting the above technical solution and setting the stabilizing mechanism, when the rotating shaft drives the workpiece to rotate, the stabilizing wheel can support the workpiece through its abutment against the side wall of the workpiece. This effectively reduces the degree of workpiece axis deviation or tilting under its own gravity, thereby effectively ensuring the processing effect of the wire EDM assembly on the workpiece. The presence of the stabilizing wheel can also effectively reduce the friction force on the workpiece. At the same time, when the workpiece needs to be installed, the drive assembly can drive the support frame to rotate, thereby eliminating the abutment between the stabilizing wheel and the workpiece, facilitating the installation of the workpiece and reducing wear during installation.

[0014] Preferably, the drive assembly includes a drive frame, a drive member, and a driving member. The drive frame is slidably connected to the feed frame. The drive member is used to drive the drive frame to slide. The drive frame drives each of the support frames to rotate through the driving member.

[0015] By adopting the above technical solution and configuring the drive components, when the drive support frame needs to rotate, the drive component can drive the drive frame to slide, thereby enabling the drive frame to drive each support frame to rotate through the drive component, thus achieving the drive of each support frame and effectively saving the number of drive components required.

[0016] Preferably, the clamping assembly includes a clamping frame and a clamping member. The number of clamping frames is set to several, and they are respectively located on different sides of the workpiece on the rotating shaft. Each clamping frame is slidably connected to the feeder, and the workpiece on the rotating shaft is located on the displacement path of each clamping frame. The clamping member is used to drive each clamping frame to slide.

[0017] By adopting the above technical solution and setting the clamping components, the clamping components can drive the clamping frame to slide, thereby clamping the workpiece and enabling the feeding frame to smoothly move the workpiece.

[0018] Preferably, the clamping component includes a plurality of linkage frames, which are arranged correspondingly to the clamping frames. One end of each linkage frame is rotatably connected to the corresponding clamping frame, and the other end is rotatably connected to the drive frame.

[0019] By adopting the above technical solution and setting the linkage frame, when the drive frame slides, thereby driving the support frame to rotate through the drive component, and thus releasing the stabilizing wheel from the workpiece, the drive frame can drive the clamping frame to slide through the linkage frame, thereby realizing the linkage between the drive frame and the clamping frame. This effectively saves the active device required to drive the clamping frame to slide, thereby reducing the overall weight of the feeding frame, reducing the load on the feeding component, and reducing the space required to set the active device.

[0020] Preferably, the stabilizing mechanism further includes a transmission frame and a rotating cylinder. The rotating cylinder is sleeved on the drive frame and rotatably connected to the drive frame. The number of transmission frames is set to several, and they are arranged corresponding to the support frame. One end of each transmission frame is rotatably connected to the rotating cylinder, and the other end is rotatably connected to the corresponding support frame. The drive frame drives the rotating cylinder to rotate through the driving member.

[0021] By adopting the above technical solution, the arrangement of the transmission frame and the rotating cylinder allows the drive frame to slide and drive the rotating cylinder to rotate through the driving component. The rotating cylinder can then drive the transmission frame to move relative to itself, thereby causing the transmission frame to drive the corresponding support frame to rotate, thus driving the support frame. This effectively achieves the transmission between the drive frame and the support frame while ensuring the linkage effect on the clamping frame.

[0022] Preferably, a drive groove is also provided on the inner side wall of the rotating cylinder. The drive groove is spiral-shaped. The driving component includes a drive rod. One end of the drive rod is connected to the drive frame, and the other end extends into the drive groove and abuts against the inner wall of the drive groove.

[0023] By adopting the above technical solution, the arrangement of the drive groove and the drive rod ensures that during the sliding process of the drive frame, the drive rod can continuously abut against the inner wall of the drive groove on the inner side wall of the rotating cylinder, thereby driving the rotating cylinder to rotate and thus realizing the rotation of the rotating cylinder. This effectively realizes the transmission between the rotating cylinder and the drive frame, effectively ensures the dual drive of the drive frame to the rotating cylinder and the support frame, ensures the transmission effect and stability, and reduces the required installation space.

[0024] On the other hand, this application also provides a machining process for a three-head variable pitch conical threaded rod, which uses the above-mentioned machining equipment for the three-head variable pitch conical threaded rod and includes the following steps: Processing preparation: The workpiece to be processed is mounted on the rotating shaft by the fixing mechanism, and the wire cutting assembly is moved by the moving component, so that the wire cutting assembly is moved to the starting point of processing; Processing the workpiece: The rotating mechanism drives the rotating shaft to rotate. At this time, the wire EDM assembly gradually moves to the end point of processing under the drive of the moving assembly, so that the wire EDM assembly processes one helical surface of the workpiece. After that, the moving assembly drives the wire EDM assembly to return to the starting point of processing, and repeats the above processing steps until all three helical surfaces are processed. Cutting the toothed bar: The clamping assembly clamps the workpiece, and the fixing mechanism releases the workpiece from the fixing mechanism. Then, the feeding component drives the feeding frame to move, so that the wire cutting assembly can cut off the ends of the parts on the three spiral surfaces of the workpiece that have been processed, forming a three-head variable pitch conical toothed bar. Continue processing: The clamping assembly releases the clamp on the workpiece, while the fixing mechanism continues to fix the workpiece. Then, the wire cutting assembly moves to the starting point of processing and processes the next segment of the workpiece, thereby achieving continuous processing of the workpiece.

[0025] In summary, this application includes at least one of the following beneficial technical effects: The feeding mechanism is designed so that after all three helical surfaces at the end of the workpiece are machined, the clamping assembly can clamp the workpiece, which in turn allows the feeding frame driven by the feeding component to move the workpiece together. This allows the cutting mechanism to cut off the end of the workpiece where all three helical surfaces have been machined and form a toothed bar. This eliminates the need to cut the workpiece into several toothed bar blanks before processing and eliminates the need for personnel to replace the toothed bar blanks. This effectively increases the processing efficiency of the three-head variable pitch tapered toothed bar and saves the time required to replace the toothed bar blanks. The stabilizing mechanism allows the stabilizing wheel to support the workpiece by abutting against the workpiece's sidewall when the rotating shaft drives the workpiece to rotate. This effectively reduces the extent of workpiece axis misalignment or tilting under its own weight, thus ensuring the processing effect of the wire EDM assembly on the workpiece. The presence of the stabilizing wheel also effectively reduces the friction on the workpiece. Furthermore, when the workpiece needs to be installed, the drive assembly can rotate the support frame, eliminating the contact between the stabilizing wheel and the workpiece, facilitating workpiece installation and reducing wear during installation. The clamping assembly is designed so that when the drive frame slides, thereby driving the support frame to rotate through the drive component and releasing the stabilizing wheel from the workpiece, the drive frame can drive the clamping frame to slide through the linkage frame, thus realizing the linkage between the drive frame and the clamping frame. This effectively saves the active device required to drive the clamping frame to slide, thereby reducing the overall weight of the feeder, reducing the load on the feeder, and reducing the space required to set up the active device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall processing equipment used to demonstrate the three-head variable pitch conical toothed rod in Embodiment 1 of this application.

[0027] Figure 2 This is a structural schematic diagram illustrating the moving component in Embodiment 1 of this application.

[0028] Figure 3 This is a schematic diagram illustrating the structure of the clamping assembly in Embodiment 1 of this application.

[0029] Figure 4 This is a schematic diagram of the structure used to illustrate the stabilizing mechanism in Embodiment 2 of this application.

[0030] Figure 5 This is a schematic diagram illustrating the structure of the clamping assembly in Embodiment 2 of this application.

[0031] Figure 6 This is a schematic diagram of the support frame used in Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Equipment body; 2. Rotating shaft; 3. Rotating mechanism; 4. Cutting mechanism; 41. Wire cutting assembly; 42. Moving assembly; 421. Moving frame; 422. Horizontal linear module; 423. Longitudinal linear module; 5. Feeding mechanism; 51. Feeding rack; 52. Feeding component; 53. Clamping assembly; 531. Clamping frame; 532. Clamping component; 5231. Linkage frame; 6. Fixing mechanism; 7. Stabilizing mechanism; 71. Support frame; 72. Stabilizing wheel; 73. Transmission frame; 74. Rotating cylinder; 75. Drive assembly; 751. Drive frame; 7511. Extension; 752. Drive component; 753. Moving component; 7531. Moving rod; 8. Drive groove. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0034] Example 1

[0035] Embodiment 1 of this application discloses a processing device for a three-head variable pitch conical threaded rod. (Refer to...) Figure 1 , Figure 2 and Figure 3 The processing equipment for a three-head variable pitch conical threaded rod includes a machine body 1, on which a rotating shaft 2, a rotating mechanism 3, and a cutting mechanism 4 are mounted. The rotating mechanism 3 drives the rotating shaft 2 to rotate relative to the machine body 1, and the rotating shaft 2 is used to fix the workpiece to be processed. The cutting mechanism 4 is used to cut the sidewalls of the rotating workpiece. The machine body 1 is also equipped with a feeding mechanism 5, which includes a feeding frame 51, a feeding component 52, and a clamping assembly 53. The feeding component 52 drives the feeding frame 51 to move along the axial direction of the rotating shaft 2. The clamping assembly 53 is mounted on the feeding frame 51 and is used to clamp the workpiece on the rotating shaft 2. The cutting mechanism 4 is also used to cut off the ends of the workpiece where all three helical surfaces have been processed, to separate the processed threaded rod.

[0036] Reference Figure 1 and Figure 2 The rotating shaft 2 is rotatably connected to the equipment body 1 via a bearing. In this embodiment, the rotating mechanism 3 is configured as a combination of a reduction motor and a gear set. The reduction motor is fixedly installed on the equipment body 1 and drives the rotating shaft 2 to rotate through the gear set, thereby driving the rotation of the rotating shaft 2. The transmission ratio between the reduction motor and the rotating shaft 2 is 2:1, so that the reduction motor rotates two revolutions and drives the rotating shaft 2 to rotate one revolution. The combination structure of the reduction motor and the gear set is prior art, so it will not be described in detail here.

[0037] Reference Figure 2 The rotating shaft 2 is also provided with a fixing mechanism 6. In this embodiment, the fixing mechanism 6 is set as an electric three-jaw chuck. The electric three-jaw chuck is fixedly installed on the rotating shaft 2 and is used to clamp one end of the workpiece to be processed, thereby fixing the workpiece to be processed on the rotating shaft 2, so that the rotating shaft 2 can drive the workpiece to rotate together. The center of the electric three-jaw chuck is provided with an opening for the workpiece to pass through, thereby facilitating the processing of long workpieces. The electric three-jaw chuck is prior art, so it will not be described in detail here.

[0038] Reference Figure 2 The cutting mechanism 4 includes a wire cutting assembly 41 and a moving assembly 42. The moving assembly 42 includes a moving frame 421, a transverse linear module 422, and a longitudinal linear module 423. In this embodiment, the wire cutting assembly 41 is configured as an electrical discharge wire cutting device, which is fixedly installed on the moving frame 421 and is used to perform wire cutting on the workpiece using molybdenum wire, thereby machining a helical surface on the workpiece.

[0039] Reference Figure 1 and Figure 2The transverse linear module 422 is fixedly installed on the equipment body 1 and is used to drive its own movable seat (i.e., the seat body used to drive the load to move) to move in a direction parallel to the axis of rotation 2. The longitudinal linear module 423 is fixedly installed on the movable seat on the transverse linear module 422 and is used to drive its own movable seat (i.e., the seat body used to drive the load to move) to move in a direction perpendicular to the axis of rotation 2 (i.e., the width direction of the equipment body 1). The wire EDM device is fixedly installed on the movable seat of the longitudinal linear module 423 to realize the movement of the wire EDM device.

[0040] Reference Figure 1 and Figure 3 The feeding rack 51 is slidably connected to the equipment body 1 via a slide rail, and the sliding direction is parallel to the axis of the rotating shaft 2. In this embodiment, the feeding component 52 is configured as a cylinder, which is fixedly installed on the equipment body 1, and the piston rod is fixedly connected to the feeding rack 51 to drive the feeding rack 51 to slide.

[0041] Reference Figure 3 In this embodiment, the clamping component 53 is configured as a pneumatic gripper, which is fixedly installed on the feeder 51 with the gripper end facing downwards to clamp the workpiece and drive it.

[0042] The implementation principle of the processing equipment for a three-head variable pitch conical toothed bar in Embodiment 1 of this application is as follows: After all three helical surfaces on the end of the workpiece are processed, the fixing mechanism 6 releases the workpiece from its fixation, and the clamping assembly 53 (i.e., pneumatic gripper) clamps the workpiece. Then, the feeding component 52 drives the feeding frame 51 to move away from the rotating shaft 2, and the moving component 42 drives the wire cutting assembly 41 to move away from the rotating shaft 2, so that the cutting wire (i.e., molybdenum wire) in the wire cutting assembly 41 moves to the side of the helical surface at the end of the workpiece closest to the rotating shaft 2, i.e., the cutting point. Afterwards, the moving component 42 drives the wire cutting assembly 41 to move, thereby causing the cutting wire (i.e., molybdenum wire) to cut the workpiece, causing the portion of the workpiece with all three helical surfaces processed to separate from the workpiece body, forming a three-head variable pitch conical toothed bar.

[0043] Embodiment 1 of this application also provides a machining process for a three-head variable pitch conical threaded rod, which uses the above-mentioned machining equipment for the three-head variable pitch conical threaded rod and includes the following steps: S1. Processing preparation: The workpiece to be processed is installed on the rotating shaft 2 by the fixing mechanism 6, and the wire cutting assembly 41 is moved by the moving assembly 42, so that the wire cutting assembly 41 is moved to the starting point of processing. S2. Processing the workpiece: The rotating mechanism 3 drives the rotating shaft 2 to rotate. At this time, the wire cutting assembly 41 gradually moves to the end point of processing under the drive of the moving assembly 42, so that the wire cutting assembly 41 processes one spiral surface of the workpiece. After that, the moving assembly 42 drives the wire cutting assembly 41 back to the starting point of processing and repeats the above processing steps until all three spiral surfaces are processed. S3, Cutting the workpiece: The clamping assembly 53 clamps the workpiece, and the fixing mechanism 6 releases the workpiece from its fixation. Then, the feeding component 52 drives the feeding frame 51 to move, and the moving assembly 42 drives the wire cutting assembly 41 to move away from the rotating shaft 2, thereby moving the cutting wire (i.e., molybdenum wire) to the cutting point. Afterward, the moving assembly 42 drives the wire cutting assembly 41 to move, thereby causing the cutting wire (i.e., molybdenum wire) to cut the workpiece, resulting in the separation of the three helical surfaces at the end of the workpiece from the workpiece body, forming a three-head variable pitch conical cutting bar. S4. Continue processing: The clamping component 53 cancels the clamping of the workpiece, while the fixing mechanism 6 continues to fix the workpiece. The moving component 42 drives the wire cutting component 41 to move back to the starting point of processing, thereby processing the next segment of the workpiece and realizing continuous processing of the workpiece.

[0044] Example 2

[0045] The difference between Embodiment 2 and Embodiment 1 in this application is that: (Refer to...) Figure 4 , Figure 5 and Figure 6 The feeding rack 51 is also equipped with a stabilizing mechanism 7, which includes a support frame 71, stabilizing wheels 72, a transmission frame 73, a rotating cylinder 74, and a drive assembly 75. Several support frames 71 and stabilizing wheels 72 are provided, correspondingly arranged, and each located on a different side of the workpiece on the rotating shaft 2. In this embodiment, the number of support frames 71 and stabilizing wheels 72 is three, and they are circumferentially distributed along the axis of the rotating shaft 2.

[0046] Reference Figure 4 and Figure 6 Each support frame 71 is configured as an arc-shaped frame, and the same end of each support frame 71 is rotatably connected to the feeding frame 51 via a pin. Each stabilizing wheel 72 is disposed at the other end of the corresponding support frame 71, and is located on the side of the support frames 71 that are close to each other. Each stabilizing wheel 72 is rotatably connected to the corresponding support frame 71 via a pin, and the rotation shaft 2 is arranged parallel to the axis of the rotation shaft 2, so that it rotates when it comes into contact with the workpiece and the workpiece rotates, thereby reducing the friction force on the workpiece. The number of transmission frames 73 is set to several. In this embodiment, the number of transmission frames 73 is set to three, and they are arranged one-to-one with the support frames 71.

[0047] Reference Figure 6Each transmission frame 73 has one end rotatably connected to the corresponding support frame 71 away from the stabilizing wheel 72 via a pin, and the other end rotatably connected to the rotating cylinder 74 via a pin. Each rotating cylinder 74 is rotatably connected to the feeding frame 51 via a bearing, so that when the rotating cylinder 74 rotates, it can drive the corresponding support frame 71 to rotate via the transmission frame 73, thereby moving the stabilizing wheel 72 on the support frame 71 away from the workpiece. An opening is also provided at one end of the rotating cylinder 74 along its own axis to allow the workpiece to pass through.

[0048] Reference Figure 4 and Figure 5 The drive assembly 75 includes a drive frame 751, a drive component 752, and a driving component 753. The drive frame 751 is located on the side of the rotating cylinder 74 near the rotating shaft 2 and is slidably connected to the feeding frame 51 via a slide rail, with the sliding direction parallel to the axis of the rotating shaft 2. In this embodiment, the drive component 752 is configured as a cylinder, which is fixedly mounted on the feeding frame 51, and the extension direction of the piston rod is the sliding direction of the drive frame 751. The piston rod of the cylinder is fixedly connected to the drive frame 751 via bolts to drive the sliding of the drive frame 751.

[0049] Reference Figure 4 and Figure 5 The drive frame 751 has an extension 7511 on the side away from the rotation shaft 2. The extension 7511 is integrally formed with the drive frame 751 and is cylindrical to allow the workpiece to pass through. The drive member 753 includes a drive rod 7531. In this embodiment, there are two drive rods 7531, which are respectively provided on opposite side walls of the extension 7511 at the end away from the rotation shaft 2 and are integrally formed with the extension 7511.

[0050] Reference Figure 4 and Figure 5 Each driving rod 7531 is a cylindrical rod. Two driving grooves 8 are formed on the inner wall of the rotating cylinder 74, and each driving groove 8 is spiral-shaped. The rotating cylinder 74 is fitted onto the end of the extension 7511, and its inner wall is abutting against the outer wall of the extension 7511 for rotatable connection. One end of each driving rod 7531 extends into the corresponding driving groove 8, and its side wall abuts against the inner wall of the corresponding driving groove 8, thereby driving the rotating cylinder 74 to rotate.

[0051] Reference Figure 4 , Figure 5 and Figure 6In the initial state, when no workpiece is installed on the rotating shaft 2, the drive frame 751 is located at the end of its sliding path away from the rotating shaft 2, and the support frame 71 is in the open state, so that the stabilizing wheels 72 are in a state of separation, facilitating the passage of the workpiece. After the workpiece is installed on the rotating shaft 2, the drive frame 751 moves towards the rotating shaft 2, so that the driving rod 7531 on the extension 7511 of the drive frame 751 abuts against the inner wall of the drive groove 8. This abutment causes the rotating cylinder 74 to rotate, which in turn causes the rotating cylinder 74 to drive the support frame 71 to rotate through the transmission frame 73, so that the stabilizing wheel 72 on the support frame 71 abuts against the side wall of the workpiece, thereby supporting the workpiece.

[0052] Reference Figure 4 and Figure 5 The clamping assembly 53 includes clamping frames 531 and clamping members 532. Several clamping frames 531 are provided, all located on the side of the drive frame 751 near the rotating shaft 2. In this embodiment, two clamping frames 531 are provided, located on the upper and lower sides of the workpiece, respectively. In the initial state, when no workpiece is mounted on the rotating shaft 2, the clamping frames 531 are not in contact with each other, thus facilitating workpiece placement.

[0053] Reference Figure 4 and Figure 5 The clamping member 532 includes several linkage frames 5231. In this embodiment, the number of linkage frames 5231 is set to two, and they correspond one-to-one with the clamping frames 531. One end of each linkage frame 5231 is rotatably connected to the side of the drive frame 751 away from the rotating cylinder 74, and the other end is rotatably connected to the corresponding clamping frame 531 through a pin, so that the drive frame 751 can drive the clamping frame 531 to slide through the linkage frames 5231, thereby realizing the driving of the clamping frame 531.

[0054] The implementation principle of the processing equipment for a three-head variable pitch conical toothed bar in Embodiment 2 of this application is as follows: After the three helical surfaces are processed, when it is necessary to move the workpiece, the drive frame 751 moves away from the rotating shaft 2, so that the driving rod 7531 on the extension 7511 of the drive frame 751 abuts against the inner wall of the drive groove 8. The abutment causes the rotating cylinder 74 to rotate, and then the rotating cylinder 74 drives the support frame 71 to rotate and gradually open through the transmission frame 73, so that the stabilizing wheel 72 on the support frame 71 releases from abutting against the side wall of the workpiece, thereby canceling the support for the workpiece.

[0055] During this process, the drive frame 751 drives the corresponding clamping frame 531 to slide through the linkage frame 5231, so that the two clamping frames 531 are close to the workpiece, and finally the clamping frames 531 clamp the workpiece, so that when the feeder 51 moves, the workpiece moves along with it.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A processing device for a three-head variable pitch conical threaded rod, comprising a device body (1), wherein a rotating shaft (2), a rotating mechanism (3), and a cutting mechanism (4) are provided on the device body (1), the rotating mechanism (3) is used to drive the rotating shaft (2) to rotate relative to the device body (1), and the rotating shaft (2) is used to fix the workpiece to be processed, and the cutting mechanism (4) is used to cut the side wall of the rotating workpiece, characterized in that: The equipment body (1) is also provided with a feeding mechanism (5). The feeding mechanism (5) includes a feeding frame (51), a feeding component (52), and a clamping assembly (53). The feeding component (52) is used to drive the feeding frame (51) to move along the axial direction of the rotating shaft (2). The clamping assembly (53) is set on the feeding frame (51) and is used to clamp the workpiece on the rotating shaft (2). The cutting mechanism (4) is also used to cut off the ends of the parts where the three spiral surfaces on the workpiece are all machined, so as to separate the machined three-head variable pitch conical toothed rod.

2. The processing equipment for a three-head variable pitch conical threaded rod according to claim 1, characterized in that: The cutting mechanism (4) includes a wire cutting assembly (41) and a moving assembly (42). The wire cutting assembly (41) is used to cut a rotating workpiece, and the moving assembly (42) is used to drive the wire cutting assembly (41) to move along the axial direction of the rotating shaft (2) and in a direction perpendicular to the axis of the rotating shaft (2).

3. The processing equipment for a three-head variable pitch conical threaded rod according to claim 1, characterized in that: The rotating shaft (2) is also provided with a fixing mechanism (6), which is used to fix the workpiece to be processed on the rotating shaft (2) and to release the fixing of the workpiece on the rotating shaft (2) when the feeder (51) moves.

4. The processing equipment for a three-head variable pitch conical threaded rod according to claim 1, characterized in that: The feeding rack (51) is also provided with a stabilizing mechanism (7). The stabilizing mechanism (7) includes a support frame (71), a stabilizing wheel (72), and a driving assembly (75). The support frame (71) and the stabilizing wheel (72) are each provided in multiples and are correspondingly arranged. They are all located on different sides of the workpiece on the rotating shaft (2). One end of each support frame (71) is rotatably connected to the feeding rack (51). The driving assembly (75) is used to drive each support frame (71) to rotate. Each stabilizing wheel (72) is rotatably connected to the other side of the corresponding support frame (71) and is used to abut against the side wall of the workpiece on the rotating shaft (2).

5. The processing equipment for a three-head variable pitch conical dental rod according to claim 4, characterized in that: The drive assembly (75) includes a drive frame (751), a drive member (752), and a drive member (753). The drive frame (751) is slidably connected to the feeder (51). The drive member (752) is used to drive the drive frame (751) to slide. The drive frame (751) drives each of the support frames (71) to rotate through the drive member (753).

6. The processing equipment for a three-head variable pitch conical threaded rod according to claim 5, characterized in that: The clamping assembly (53) includes a clamping frame (531) and a clamping member (532). The number of clamping frames (531) is set to several, and they are located on different sides of the workpiece on the rotating shaft (2). Each clamping frame (531) is slidably connected to the feeder (51), and the workpiece on the rotating shaft (2) is located on the displacement path of each clamping frame (531). The clamping member (532) is used to drive each clamping frame (531) to slide.

7. The processing equipment for a three-head variable pitch conical threaded rod according to claim 6, characterized in that: The clamping member (532) includes a plurality of linkage frames (5231), which are correspondingly arranged with the clamping frame (531). One end of each linkage frame (5231) is rotatably connected to the corresponding clamping frame (531), and the other end is rotatably connected to the drive frame (751).

8. The processing equipment for a three-head variable pitch conical threaded rod according to claim 5, characterized in that: The stabilizing mechanism (7) further includes a transmission frame (73) and a rotating cylinder (74). The rotating cylinder (74) is sleeved on the drive frame (751) and rotatably connected to the drive frame (751). The number of transmission frames (73) is set to several, and they are arranged corresponding to the support frame (71). One end of each transmission frame (73) is rotatably connected to the rotating cylinder (74), and the other end is rotatably connected to the corresponding support frame (71). The drive frame (751) drives the rotating cylinder (74) to rotate through the drive member (753).

9. The processing equipment for a three-head variable pitch conical threaded rod according to claim 8, characterized in that: The inner wall of the rotating cylinder (74) is also provided with a drive groove (8), which is spiral in shape. The drive member (753) includes a drive rod (7531), one end of which is connected to the drive frame (751), and the other end extends into the drive groove (8) and abuts against the inner wall of the drive groove (8).

10. The machining process for a three-head variable pitch conical threaded rod according to claim 1, using the machining equipment for the three-head variable pitch conical threaded rod described in any one of 1-9 above, characterized in that: Includes the following steps: Processing preparation: The workpiece to be processed is mounted on the rotating shaft (2) by the fixing mechanism (6), and the wire cutting assembly (41) is moved by the moving component (42) so that the wire cutting assembly (41) is moved to the starting point of processing; Processing workpiece: The rotating mechanism (3) drives the rotating shaft (2) to rotate. At this time, the wire cutting assembly (41) gradually moves to the end point of processing under the drive of the moving assembly (42), so that the wire cutting assembly (41) processes one spiral surface of the workpiece. After that, the moving assembly (42) drives the wire cutting assembly (41) back to the starting point of processing and repeats the above processing steps until all three spiral surfaces are processed. Cutting the toothed bar: The clamping assembly (53) clamps the workpiece, and the fixing mechanism (6) cancels the fixing of the workpiece. Then the feeding component (52) drives the feeding frame (51) to move, so that the wire cutting assembly (41) can cut off the end of the part where all three spiral surfaces on the workpiece have been processed, forming a three-head variable pitch conical toothed bar. Continue processing: The clamping assembly (53) releases the clamp on the workpiece, and the fixing mechanism (6) continues to fix the workpiece. Then the wire cutting assembly (41) moves to the starting point of the processing and processes the next segment of the workpiece, thereby realizing continuous processing of the workpiece.

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