Automatic centering thread rolling machine

Abstract

The utility model relates to a thread rolling machine technical field especially relates to a kind of thread rolling wheel automatic centering thread rolling machine, including operation platform, the top two ends of operation platform are symmetrically equipped with thread rolling wheel, thread rolling wheel is placed in U-shaped seat, and the end of thread rolling wheel is rotatably connected with the inner wall of U-shaped seat by connecting shaft, and U-shaped seat is fixed on connecting seat, and connecting seat is set in the side of support seat, support seat is fixed on operation platform, support seat is hollow casing, transmission mechanism driving connecting seat to be set in support seat linear motion has.This utility model is by being provided with the structure of slide rail, slider and moving seat, cooperate the transmission mode of spline sleeve and spline shaft, ensure that two thread rolling wheels always keep coaxial alignment when adjusting interval, avoid the deviation or misplacement problem caused by manual adjustment, improve the precision and consistency of thread rolling processing;And the interval of thread rolling wheel is adjustable, applicable to the processing of different diameter pipe, shaft workpiece, enhances the versatility and applicability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of thread rolling machine technology, and in particular to an automatic thread rolling machine with thread rolling wheel centering. Background Technology

[0002] A thread rolling machine is a multi-functional cold extrusion forming machine tool. Within its rolling pressure range, it can perform thread rolling, straight knitting, and oblique knitting on workpieces in a cold state; roll spur gears, helical gears, and helical spline gears; straighten, reduce diameter, burnish, and perform various forming rolls. The machine has a safe and reliable electro-hydraulic actuator and control system, allowing each work cycle to be selected in manual, semi-automatic, and automatic modes.

[0003] In the use of thread rolling machines, to improve their adaptability and process workpieces such as pipes and shafts of different diameters, the thread rolling wheels at both ends can move linearly. However, to save costs, most thread rolling machines require manual adjustment of the thread rolling wheels. This is achieved by transmitting linear motion between the base of the thread rolling wheels through components such as the lead screw, lead nut, and sleeve, allowing adjustment of the distance between the two thread rolling wheels. However, during the adjustment process, misalignment or displacement between the two thread rolling wheels is inevitable, resulting in the trajectories of the two thread rolling wheels acting on the components not being completely aligned, thus affecting the thread rolling effect. To address this, we propose an automatic thread rolling wheel centering thread rolling machine. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing an automatic centering thread rolling machine for thread rolling wheels.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic centering thread rolling machine, comprising an operating table, with thread rolling wheels symmetrically arranged at both ends of the top of the operating table, the thread rolling wheels being placed inside a U-shaped seat, and the ends of the thread rolling wheels being rotatably connected to the inner wall of the U-shaped seat through a connecting shaft, the U-shaped seat being fixed on a connecting seat, and the connecting seat being arranged on one side of a support seat, the support seat being fixed on the operating table, the support seat being a hollow housing, and a transmission mechanism for driving the connecting seat to perform linear motion being provided inside the support seat; A fixed base is installed on one side of the top of the operating table. A slotted groove is formed at both ends of the fixed base, and the two slots are aligned on the same straight line. Slide rails are installed along the length of the slots on both the upper and lower sides. A movable base is located within the slot, and a slider is mounted on the movable base and slidably mounted on the slide rail. A spline sleeve passes through the movable base, rotatably connected to it. One end of the spline sleeve is coaxially connected to a connecting shaft. A spline shaft is built into the other end of the spline sleeve, and a first universal joint is installed at the other end of the spline shaft. The other end of the first universal joint is connected to a second universal joint via a rotating shaft, which is coaxial with the spline shaft. A drive motor is connected to the other end of the second universal joint via a drive shaft. The drive motor is mounted on a support frame, and the support frame is fixed to the operating table.

[0006] Preferably, a control box is installed on the side of the operating console away from the fixed base, and a controller is installed inside the control box. The controller is connected to the drive motor via wires.

[0007] Preferably, a baffle is provided on the side of the two drive motors that are relatively close to each other, and the baffle is fixed to the support frame.

[0008] Preferably, at least two support shafts are provided at the top between the two support bases, with the ends of the support shafts extending through the top of the support bases.

[0009] Preferably, the transmission mechanism includes a first sleeve, which is placed inside the support base and slides through the support base and is fixed to the connecting seat. A first lead screw is internally threaded to the other end of the first sleeve, and a first handle is installed at the other end of the support base. The first lead screw is rotatably connected to the support base.

[0010] Preferably, the operating table is a hollow shell with a U-shaped frame located below the two thread rolling wheels. Several spaced-apart support wheels are arranged inside the U-shaped frame, with the ends of the support wheels rotatably connected to the U-shaped frame. A second sleeve is vertically installed at the center of the bottom of the U-shaped frame, its bottom slidingly penetrating the top surface of the operating table and positioned within it. A second lead screw is internally threaded to the bottom of the second sleeve, its bottom rotatably connected to the inner wall of the operating table. A worm gear is coaxially mounted on the bottom of the second lead screw, with a worm meshing on its side. The end of the worm is rotatably connected to the inner wall of the operating table, and one end of the worm penetrates the operating table and is connected to a second handle.

[0011] Preferably, a through hole is provided on the fixing base, and the frontal projection of the through hole is located between the two strip grooves.

[0012] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model, by setting up a structure with a slide rail, a slider and a movable seat, and cooperating with the transmission method of spline sleeve and spline shaft, ensures that the two thread rolling wheels always remain coaxially aligned when adjusting the spacing, avoiding the problem of offset or misalignment caused by manual adjustment, thus improving the accuracy and consistency of thread rolling. The spacing of the thread rolling wheels is adjustable, which is suitable for processing pipes and shafts of different diameters, enhancing the versatility and applicability of the equipment.

[0013] 2. This utility model adopts a universal joint transmission with a spline shaft and spline sleeve. Even if the drive motor and the thread rolling wheel are not on the same straight line, the stability and continuity of power transmission can be guaranteed, while avoiding contamination of the motor by coolant or debris. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the support base of this utility model; Figure 4 This is a schematic diagram of the internal structure of the operating table of this utility model.

[0015] In the diagram: 1. Control panel; 2. Support base; 3. Thread rolling wheel; 4. U-shaped seat; 5. Connecting seat; 6. First sleeve; 7. First lead screw; 8. First handle; 9. Spline sleeve; 10. Spline shaft; 11. First universal joint; 12. Second universal joint; 13. Strip groove; 14. Slide rail; 15. Moving seat; 16. Drive motor; 17. Support frame; 18. Cover plate; 19. Fixed seat; 20. Through hole; 21. Support shaft; 22. U-shaped frame; 23. Support wheel; 24. Second sleeve; 25. Second lead screw; 26. Worm gear; 27. Worm; 28. Second handle; 29. ​​Control box; 30. Connecting shaft. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example Reference Figures 1-4An automatic centering thread rolling machine includes an operating table 1. Thread rolling wheels 3 are symmetrically arranged at both ends of the top of the operating table 1. The thread rolling wheels 3 are placed inside a U-shaped seat 4, and the ends of the thread rolling wheels 3 are rotatably connected to the inner wall of the U-shaped seat 4 through a connecting shaft 30. The U-shaped seat 4 is fixed on a connecting seat 5, and the connecting seat 5 is arranged on one side of a support seat 2. The support seat 2 is fixed on the operating table 1. The support seat 2 is a hollow housing. A transmission mechanism is provided inside the support seat 2 to drive the connecting seat 5 to perform linear motion, which allows the two thread rolling wheels 3 to move closer or further apart. Thus, during use, the thread rolling wheels 3 can be adjusted according to the diameter of the workpiece being processed, improving the adaptability of the thread rolling machine.

[0018] like Figure 1 and Figure 3 As shown, the transmission mechanism includes a first sleeve 6, which is placed inside the support base 2 and slides through the support base 2 and is fixed to the connecting seat 5. A first lead screw 7 is internally threaded to the other end of the first sleeve 6. A first handle 8 is installed through the support base 2 at the other end of the first lead screw 7. The first lead screw 7 is rotatably connected to the support base 2. In actual use, a nut is threaded onto the first lead screw 7 and is fixed to the inner wall of the first sleeve 6. The first sleeve 6 is connected to the support base 2 through a linear bearing. When the first handle 8 is rotated, it can drive the first lead screw 7 to rotate. Because the linear bearing limits the first sleeve 6, the first sleeve 6 can only move in a straight line on the support base 2. The rotation of the first lead screw 7 can drive the first sleeve 6 to move in a straight line on the support base 2, thereby realizing the movement adjustment of the thread rolling wheel 3.

[0019] Furthermore, in order to ensure that the two support bases 2 are installed on the operating table 1, at least two support shafts 21 are provided at the top between the two support bases 2. The ends of the support shafts 21 are provided through the top of the support bases 2 to limit the installation position of the support bases 2 and ensure that the two support bases 2 correspond to each other during installation.

[0020] When adjusting the position of the thread rolling wheel 3, such as Figure 1 and Figure 2As shown, a fixed seat 19 is installed on one side of the top of the operating table 1. A strip groove 13 is provided at both ends of the fixed seat 19. The two strip grooves 13 are located on the same straight line. A slide rail 14 is installed on both the upper and lower sides of the strip groove 13 along the length of the strip groove 13. A movable seat 15 is provided in the strip groove 13. A slider is installed on the movable seat 15 and is slidably mounted on the slide rail 14. A spline sleeve 9 is provided through the movable seat 15. The spline sleeve 9 is rotatably connected to the movable seat 15. One end of the spline sleeve 9 is coaxially connected to the connecting shaft 30. The sliding of the two sets of sliders on the slide rail 14 limits the movement of the connecting shaft 30 with the thread rolling wheel 3, ensuring that the thread rolling wheel 3 always moves in a straight line, so that the two thread rolling wheels 3 are stably aligned and there is no displacement or misalignment.

[0021] A splined shaft 10 is built into the other end of the splined sleeve 9. A first universal joint 11 is installed on the other end of the splined shaft 10. A second universal joint 12 is connected to the other end of the first universal joint 11 through a rotating shaft. The rotating shaft is coaxial with the splined shaft 10. A drive motor 16 is connected to the other end of the second universal joint 12 through a drive shaft. The drive motor 16 is mounted on a support frame 17, and the support frame 17 is fixed on the operating table 1. The drive motor 16 provides power for the rotation of the splined sleeve 9, that is, provides power for the rotation of the thread rolling wheel 3. In use, the rotation of the splined sleeve 9 can still be driven by the sliding of the splined shaft 10 in the splined sleeve 9. The transmission between the drive shaft of the drive motor 16 and the splined shaft 10 through the two universal joints allows the connecting shaft 30 of the thread rolling wheel 3 to still be stably transmitted even when it is not coaxial with the drive shaft of the drive motor 16. The drive motor 16 can be set away from the thread rolling wheel 3 to avoid the adhesion of coolant or debris.

[0022] like Figure 1 and Figure 4 As shown, the operating table 1 is a hollow shell. A U-shaped frame 22 is provided below the two thread rolling wheels 3, and several spaced support wheels 23 are provided inside the U-shaped frame 22. The ends of the support wheels 23 are rotatably connected to the U-shaped frame 22. A second sleeve 24 is vertically installed at the center of the bottom of the U-shaped frame 22. The bottom of the second sleeve 24 slides through the top surface of the operating table 1 and is placed inside the operating table 1. A second lead screw 25 is internally threaded to the bottom of the second sleeve 24. The bottom of the second lead screw 25 is rotatably connected to the inner wall of the operating table 1. A worm gear 26 is coaxially installed on the bottom of the second lead screw 25. A worm 27 is meshed on the side of the worm gear 26. The end of the worm 27 is rotatably connected to the inner wall of the operating table 1, and one end of the worm 27 passes through the operating table 1 and is connected to a second handle 28. By rotating the second lead screw 25, the height of the support wheels 23 can be adjusted so that the support wheels 23 can be adjusted to match the diameter of the workpiece.

[0023] When in use, first adjust the thread rolling wheel 3 and the support wheel 23 according to the diameter of the workpiece to be processed, then take the workpiece and place it between the two thread rolling wheels 3 from above. As the drive motor 16 drives the thread rolling wheel 3 to rotate, the thread rolling process of the workpiece is completed.

[0024] As the thread rolling wheel 3 rotates, a through hole 20 is provided on the fixed base 19, and the frontal projection of the through hole 20 is located between the two strip grooves 13, so that the thread-rolled workpiece can be discharged from the through hole 20 with the transmission of the thread rolling wheel 3.

[0025] Furthermore, a shielding plate 18 is provided on the side of the two drive motors 16 that are relatively close to each other. The shielding plate 18 is fixed to the support frame 17 and can shield and protect the drive motors 16.

[0026] Specifically, a control box 29 is installed on the side of the operating console 1 away from the fixed base 19. The control box 29 contains a controller, which is connected to the drive motor 16 via wires. In actual use, the controller is one of the following: PLC logic controller, control motherboard, or control host.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic thread rolling machine for centering thread rolling wheels, characterized in that: The system includes an operating table (1), with symmetrical thread rolling wheels (3) at both ends of the top of the operating table (1). The thread rolling wheels (3) are placed inside a U-shaped seat (4), and the ends of the thread rolling wheels (3) are rotatably connected to the inner wall of the U-shaped seat (4) through a connecting shaft (30). The U-shaped seat (4) is fixed on a connecting seat (5), and a support seat (2) is set on one side of the connecting seat (5). The support seat (2) is fixed on the operating table (1). The support seat (2) is a hollow housing, and a transmission mechanism that drives the connecting seat (5) to perform linear motion is provided inside the support seat (2). A fixed seat (19) is installed on one side of the top of the operating table (1). A strip groove (13) is provided at both ends of the fixed seat (19). The two strip grooves (13) are located on the same straight line. A slide rail (14) is installed on both the upper and lower sides of the strip groove (13) along the length of the strip groove (13). A movable seat (15) is provided in the strip groove (13). A slider is installed on the movable seat (15) and slidably mounted on the slide rail (14). A spline sleeve (9) is provided through the movable seat (15). The spline sleeve (9) is rotatably connected to the movable seat (15). One end of the spline sleeve (9) is coaxially connected to the connecting shaft (30), and a spline shaft (10) is built into the other end of the spline sleeve (9). A first universal joint (11) is installed on the other end of the spline shaft (10). A second universal joint (12) is connected to the other end of the first universal joint (11) through a rotating shaft. The rotating shaft is coaxially set with the spline shaft (10). A drive motor (16) is connected to the other end of the second universal joint (12) through a drive shaft. The drive motor (16) is set on the support frame (17), and the support frame (17) is fixed on the operating table (1).

2. The automatic centering thread rolling machine for thread rolling wheels according to claim 1, characterized in that: A control box (29) is installed on the side of the control panel (1) away from the fixed base (19). The control box (29) contains a controller, which is connected to the drive motor (16) via a wire.

3. The automatic centering thread rolling machine for thread rolling wheels according to claim 1, characterized in that: A baffle plate (18) is provided on the side of the two drive motors (16) that are relatively close to each other, and the baffle plate (18) is fixed to the support frame (17).

4. The automatic centering thread rolling machine for thread rolling wheels according to claim 1, characterized in that: At least two support shafts (21) are provided at the top between the two support seats (2), and the ends of the support shafts (21) are provided through the top of the support seats (2).

5. The automatic centering thread rolling machine for thread rolling wheels according to claim 1, characterized in that: The transmission mechanism includes a first sleeve (6), which is placed inside the support seat (2). The first sleeve (6) slides through the support seat (2) and is fixed to the connecting seat (5). A first lead screw (7) is internally threaded to the other end of the first sleeve (6). The other end of the first lead screw (7) passes through the support seat (2) and is equipped with a first handle (8). The first lead screw (7) is rotatably connected to the support seat (2).

6. The automatic centering thread rolling machine for thread rolling wheels according to claim 1, characterized in that: The operating table (1) is a hollow shell. A U-shaped frame (22) is provided below the two thread rolling wheels (3). Several support wheels (23) are arranged at intervals inside the U-shaped frame (22). The ends of the support wheels (23) are rotatably connected to the U-shaped frame (22). A second sleeve (24) is vertically installed at the center of the bottom of the U-shaped frame (22). The bottom of the second sleeve (24) slides through the top surface of the operating table (1) and is placed inside the operating table (1). A second screw (25) is internally threaded at the bottom of the second sleeve (24). The bottom of the second screw (25) is rotatably connected to the inner wall of the operating table (1). A worm gear (26) is coaxially installed on the bottom of the second screw (25). A worm (27) is meshed on the side of the worm gear (26). The end of the worm (27) is rotatably connected to the inner wall of the operating table (1). One end of the worm (27) passes through the operating table (1) and is connected to a second handle (28).

7. The automatic centering thread rolling machine for thread rolling wheels according to claim 1, characterized in that: A through hole (20) is provided on the fixed base (19), and the frontal projection of the through hole (20) is located between two strip grooves (13).

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