A lathe for vibrating rod turning

Abstract

The present application relates to the technical field of vibrating rod processing, and in particular to a lathe for vibrating rod turning, which includes: a bed, a turning mechanism slidably arranged on the bed, a chuck arranged on the bed for fixing one end of a tubular workpiece, and also includes: a top mechanism arranged on the bed for fixing the other end of the tubular workpiece, wherein the top mechanism includes: an adjustment seat, which slides on the bed and approaches or moves away from the tubular workpiece; a moving assembly, which is arranged on the bed and connected to the adjustment seat to drive the adjustment seat to slide; a main top, which is arranged on the adjustment seat and is coaxially arranged with the chuck; a secondary top, which is detachably arranged on the main top, abuts against the inner circle of the tubular workpiece and forms a conical abutting surface, and a rotating groove is opened at one end away from the tubular workpiece, and the end of the main top rotates in the rotating groove. The present application has the effect of reducing the impact on the quality of the shell product.

Description

Technical Field

[0001] The present application relates to the technical field of vibrating rod processing, and in particular to a lathe for vibrating rod turning. Background Art

[0002] At present, the production of vibrating rods used for concrete vibration generally includes the following steps: raw material preparation, parts processing, assembly, testing and debugging, and quality control, among which the parts processing steps include: shell processing: the shell of the vibrating rod is made by casting or forging process, and the shell is fixed on a lathe for turning and other mechanical processing to ensure its dimensional accuracy and surface quality; eccentric block production: the eccentric block is a key component for generating vibration force, and its quality and shape need to be precisely processed to ensure the vibration effect; bearing installation: select suitable bearings and install them on the vibrating rod to ensure the accuracy and life of the bearings.

[0003] In the prior art, the shell is cast or forged into a tubular structure and then turned. During turning, one end is clamped and fixed by a three-jaw chuck, and then the outer wall of the shell is finely processed by a turning tool. However, the shell of the vibrating rod is of different lengths and the thickness of the tube wall is relatively thin. During turning, the turning tool applies force to the shell, which easily causes the shell to flex downward, affecting the product quality of the shell. Summary of the invention

[0004] In order to reduce the impact on the quality of shell products, the present application provides a lathe for turning vibration rods.

[0005] The present application provides a lathe for vibrating rod turning, which adopts the following technical solution:

[0006] A lathe for vibrating rod turning, comprising: a bed, a turning mechanism slidably arranged on the bed, a chuck arranged on the bed for fixing one end of a tubular workpiece, and a rotating mechanism arranged on the bed for driving the chuck to rotate, and also comprising: a centering mechanism arranged on the bed for fixing the other end of the tubular workpiece, wherein the centering mechanism comprises:

[0007] An adjusting seat slides on the bed and moves closer to or farther from the tubular workpiece;

[0008] A moving assembly, arranged on the bed body and connected to the adjusting seat, for driving the adjusting seat to slide;

[0009] A main center, which is arranged on the adjustment seat and is coaxial with the chuck;

[0010] The auxiliary top point is detachably arranged on the main top point, abuts against the inner circle of the tubular workpiece to form a conical abutting surface, and a rotating groove is opened at one end away from the tubular workpiece, and the end of the main top point rotates in the rotating groove.

[0011] By adopting the above technical scheme, when turning a tubular workpiece, first clamp one end of the tubular workpiece with a chuck, then adjust the moving assembly to drive the adjusting seat to slide, the adjusting seat drives the main center point to approach the tubular workpiece, then insert the conical abutment surface of the auxiliary center point into the tubular workpiece, then move the main center point to be inserted into the rotating groove, then use the rotating mechanism to drive the chuck to rotate, the chuck drives the tubular workpiece to rotate, and then the turning mechanism approaches the tubular workpiece for turning; by setting the auxiliary center point, it is convenient to fix the two ends of the tubular workpiece, reduce the shaking of the tubular workpiece during turning, improve the turning accuracy, reduce the deflection of the tubular workpiece, reduce the inconsistent wall thickness of the shell, and reduce the impact on the quality of the shell product.

[0012] Optionally, a restraining assembly is provided at the end of the secondary tip, and the restraining assembly includes:

[0013] A plurality of pressure rods are provided and all are provided on the secondary top, extending to above the conical abutment surface;

[0014] The restraining ring is arranged corresponding to the pressing rod and abuts against the outer wall of the tubular workpiece.

[0015] By adopting the above technical solution, since the wall thickness of the tubular workpiece is relatively small, the outer wall of the tubular workpiece is constrained by the arranged pressure rod and the restraining ring, thereby reducing the deformation of the tubular workpiece caused by excessive force applied by the sub-top to the tubular workpiece, reducing the impact on the subsequent installation of the vibrating rod, and reducing the impact on the quality of the shell product.

[0016] Optionally, the pressure rod is rotatably disposed on the secondary top, and one end away from the secondary top approaches the main top; the restraining assembly further comprises:

[0017] A locking ring is sleeved on the outer sides of the plurality of pressure rods and slides along the length direction of the secondary top;

[0018] An adjusting ring is threadedly connected to the secondary top and connected to the locking ring to adjust the position of the locking ring.

[0019] By adopting the above technical solution, when the thickness or wall thickness of the tubular workpiece changes, the adjusting ring is rotated, and the adjusting ring drives the locking ring to slide, so that the locking ring squeezes the pressure rod, so that the restraining ring is tightly attached to the outer wall of the tubular workpiece. Through the above arrangement, the applicability of the top is improved, and the fixation of workpieces with different diameters can be reduced.

[0020] Optionally, the restraint assembly further comprises:

[0021] A sliding ring slides on the sub-top along the length direction of the sub-top and is connected to the pressure rod for adjusting the position of the pressure rod.

[0022] By adopting the above technical solution, when the diameter of the tubular workpiece changes, the abutment position between the tubular workpiece and the conical abutment surface changes. By adjusting the position of the sliding ring, the abutment position of the restraining ring and the tubular workpiece is made to correspond, thereby reducing the damage of the conical abutment surface to the tubular workpiece, reducing the deformation of the tubular workpiece caused by excessive force applied by the sub-top to the tubular workpiece, reducing the impact on the subsequent installation of the vibrating rod, and reducing the impact on the quality of the shell product.

[0023] Optionally, the restraint assembly further comprises:

[0024] A support block is arranged on the auxiliary top, and the side wall of the pressure rod close to the auxiliary top abuts against the support block. With the sliding of the pressure rod, the restraining ring is moved closer to or away from the tubular workpiece.

[0025] By adopting the above technical solution and setting the support block, when the sliding ring drives the pressure rod to slide, the pressure rod automatically expands outward, reducing the contact between the tubular workpiece and the restraining ring, facilitating the cooperation between the tubular workpiece and the auxiliary center, and improving convenience.

[0026] Optionally, the adjustment ring is provided with marking scales which are arranged at equal intervals along the circumference of the adjustment ring to assist in adjusting the position of the slip ring.

[0027] By adopting the above technical solution and setting the marking ruler, the position of the adjustment ring is more intuitive, and the position of the adjustment ring can be adjusted in time according to the inner diameter and wall thickness of the tubular workpiece, making the equipment more convenient and able to maintain connection stability.

[0028] Optionally, a centering component is provided at one end of the secondary top close to the main top, and the centering component includes:

[0029] A limiting ring is arranged on the side wall of the secondary top where the rotating groove is opened, and is arranged coaxially with the rotating groove;

[0030] The centering ring is threadedly arranged on the limiting ring, and a plurality of balls are rotatably connected on the inner wall. The plurality of balls are coaxially arranged with the main top and are rollingly connected with the outer wall of the main top.

[0031] By adopting the above technical solution, when the main center approaches the secondary center, the main center moves into the centering ring and then is connected with multiple ball rolling devices. The main center is inserted into the rotating groove. By setting the centering component, the eccentricity of the tubular workpiece can be reduced, the processing accuracy of the shell can be improved, and the damage to the shell can be reduced.

[0032] Optionally, a gradient section is formed on the main top, the gradient section is conical, and the cross-sectional area of ​​one end close to the auxiliary top is smaller than the cross-sectional area away from the auxiliary top, and the ball is rollingly connected to the gradient section.

[0033] By adopting the above technical solution, as the main center is extended, the contact force between the gradient section and the ball increases, which can reduce the force on the rotating groove, reduce excessive wear on the rotating groove, reduce mechanical wear, maintain the accuracy of the equipment, and reduce excessive frictional heat generation.

[0034] Optionally, an observation hole is provided on the limiting ring for observing whether the main top has entered the rotating groove.

[0035] By adopting the above technical solution, when the main center approaches the auxiliary center, the relative position of the main center and the rotating groove can be observed through the observation hole, which is convenient for determining the stable connection between the two and reducing the instability during the turning process. At the same time, the tubular workpiece can be better centered, reducing the impact on the subsequent installation of the vibration rod and reducing the impact on the quality of the shell product.

[0036] Optionally, a transmission assembly is provided on the adjusting ring, and the transmission assembly includes:

[0037] A transmission ring is arranged on the sliding ring, and a plurality of spiral grooves are opened on the peripheral side wall, wherein the spiral grooves are opened from one end to the other end along the length direction of the transmission ring, and are opened spirally along the axis of the transmission ring;

[0038] A transmission rod is arranged on the adjusting ring. The transmission rod slides in the spiral groove and can slide out of the spiral groove.

[0039] By adopting the above technical solution, when the adjusting ring rotates, the adjusting ring drives the transmission rod to rotate, and the transmission rod drives the sliding ring to rotate, so that the sliding ring slides, and the positions of the restraining ring and the locking ring are adjusted simultaneously, which is convenient for the subsequent fixation of the pressure rod, and the restriction of the tubular workpiece, thereby improving efficiency, reducing deformation of the tubular workpiece, reducing the impact on the subsequent installation of the vibration rod, and reducing the impact on the quality of the shell product.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. When turning a tubular workpiece, first clamp one end of the tubular workpiece with a chuck, then adjust the moving assembly to drive the adjusting seat to slide, the adjusting seat drives the main center to approach the tubular workpiece, then insert the conical abutment surface of the sub-center into the tubular workpiece, then move the main center to insert into the rotating groove, then use the rotating mechanism to drive the chuck to rotate, the chuck drives the tubular workpiece to rotate, and then the turning mechanism approaches the tubular workpiece for turning; the sub-center is set, which makes it easy to fix both ends of the tubular workpiece, reduce the shaking of the tubular workpiece during turning, improve the turning accuracy, reduce the deflection of the tubular workpiece, reduce the inconsistent wall thickness of the shell, and reduce the impact on the quality of the shell product.

[0042] 2. When the diameter of the tubular workpiece changes, the abutment position between the tubular workpiece and the tapered abutment surface changes. By adjusting the position of the sliding ring, the abutment position of the restraining ring and the tubular workpiece is made to correspond, thereby reducing the damage of the tapered abutment surface to the tubular workpiece, reducing the deformation of the tubular workpiece caused by excessive force applied by the secondary center, reducing the impact on the subsequent installation of the vibrating rod, and reducing the impact on the quality of the shell product.

[0043] 3. When the adjusting ring rotates, the adjusting ring drives the transmission rod to rotate, and the transmission rod drives the sliding ring to rotate, so that the sliding ring slides, and the positions of the restraining ring and the locking ring are adjusted simultaneously, which is convenient for the subsequent fixation of the pressure rod, and is convenient for limiting the tubular workpiece, improving efficiency, reducing deformation of the tubular workpiece, reducing the impact on the subsequent installation of the vibrating rod, and reducing the impact on the quality of the shell product. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the overall structure of the lathe in the embodiment of the present application;

[0045] Figure 2 It is a display diagram of the top mechanism in the embodiment of this application;

[0046] Figure 3 is a display diagram of the transmission assembly in the embodiment of the present application;

[0047] Figure 4 It is a display diagram of the rotating groove in the embodiment of the present application;

[0048] Figure 5 It is a cross-sectional view of the limiting ring in the embodiment of the present application.

[0049] Reference numerals: 100, bed; 200, turning mechanism; 210, first moving frame; 220, traverse screw; 230, first hand wheel; 240, second moving frame; 250, second hand wheel; 260, tool holder; 300, chuck; 400, support frame; 500, centering mechanism; 510, adjustment seat; 520, moving assembly; 530, main centering; 531, gradient section; 540, auxiliary centering; 541, tapered abutment surface; 5 42. Rotating groove; 550. Restraining assembly; 551. Pressure rod; 552. Restraining ring; 553. Locking ring; 554. Adjusting ring; 555. Sliding ring; 556. Support block; 557. Marking ruler; 560. Centering assembly; 561. Limiting ring; 562. Centering ring; 563. Observation hole; 564. Ball bearing; 570. Transmission assembly; 571. Transmission ring; 572. Transmission rod; 573. Spiral groove; 580. Mounting seat. DETAILED DESCRIPTION

[0050] The following combination Figures 1 to 5 This application is described in further detail.

[0051] This embodiment discloses a lathe for turning a vibrating rod.

[0052] Reference Figure 1 A lathe for vibrating rod turning includes: a bed 100, a turning mechanism 200 sliding on the bed 100 for turning a tubular workpiece, a chuck 300 rotatably arranged at one end of the bed 100 for fixing the tubular workpiece, a rotating mechanism arranged on the bed 100 for driving the chuck 300 to rotate, and a centering mechanism 500 arranged on the bed 100 for fixing the other end of the tubular workpiece. When turning the tubular workpiece, one end of the tubular workpiece is clamped and fixed by the chuck 300, and the other end is fixed by the centering mechanism 500. The chuck 300 is driven to rotate by the rotating mechanism so that the tubular workpiece can rotate along its own axis, and then the tubular workpiece is turned by the turning mechanism 200.

[0053] The bed 100 is set on the ground, and a flat processing table is formed on the side away from the ground. One end of the processing table is fixedly connected to a support frame 400, and the chuck 300 is rotatably connected to the support frame 400. The rotating mechanism is a servo motor fixedly connected to the support frame 400, and the output shaft of the servo motor is transmission-connected to the rotating shaft of the chuck 300 through a coupling.

[0054] The chuck 300 can be a clamping fixture such as a three-jaw chuck or a four-jaw chuck. The turning mechanism 200 includes a first movable frame 210 slidably connected to the bed 100. The first movable frame 210 slides along the length direction of the bed 100. A transverse movement assembly is provided on the bed 100. The transverse movement assembly can adopt a motor screw, a cylinder, a motor gear rack or other linear drive mechanism. The transverse movement assembly of this embodiment includes a transverse movement screw 220 rotatably connected to the bed 100. The transverse movement screw 220 passes through the first movable frame 210 and is threadedly connected to the first movable frame 210. A first hand wheel 230 is rotatably connected to the bed 100. The first hand wheel 230 is connected to the transverse movement screw 220 and drives the transverse movement screw 220 to rotate. ; The first movable frame 210 is slidably connected to the second movable frame 240, and the second movable frame 240 is slidably connected to the first movable frame 210 in the vertical direction. The second movable frame 240 is fixedly connected to the tool holder 260, and the tool holder 260 is detachably connected to the turning tool by bolts. The first movable frame 210 is rotatably connected to a longitudinal screw, which passes through the second movable frame 240 and is threadedly connected to the second movable frame 240. The first movable frame 210 is rotatably connected to a second hand wheel 250, and the second hand wheel 250 is connected to the longitudinal screw and drives the longitudinal screw to rotate; in other embodiments, a cross movable frame can be installed on the second movable frame 240, and the turning tool is detachably connected to the cross movable frame by bolts.

[0055] Reference Figure 1 , Figure 2 and Figure 3 The top mechanism 500 includes an adjustment seat 510 that slides on the bed 100 along the length direction of the bed 100. The adjustment seat 510 is close to or away from the chuck 300. A moving component 520 is arranged on the bed 100. The moving component 520 can be a linear drive mechanism such as a motor screw, a handwheel screw, a cylinder, a motor gear rack, etc. In this example, the moving component 520 includes a moving screw, which is rotatably connected to the bed 100. The moving screw passes through the adjustment seat 510 and is threadedly connected to the adjustment seat 510. A rotating handle is rotatably connected to the bed 100, and the rotating handle is fixedly connected to the moving screw and drives the moving screw to rotate; a mounting is fixedly connected to the adjustment seat 510 The seat 580 has a conical hole on it, in which the main tip 530 is inserted, and the main tip 530 is divided into four sections. The section inserted in the conical hole is the first section, which is in the shape of a conical table and matches the conical hole. The side of the first section away from the mounting seat 580 is the second section, which is cylindrical. The side of the second section away from the first section is the third section, which is a gradual section 531 and is conical, with a changing direction opposite to that of the first section, and a vertical cross-sectional area of ​​the end away from the mounting seat 580 is smaller than a vertical cross-sectional area of ​​the end close to the mounting seat 580; the side of the third section away from the second section is the fourth section, which is a pressure section and is conical, and the tip is located at the end away from the third section.

[0056] Reference Figure 4 The top mechanism 500 also includes a sub-top 540, one end of which is conical or truncated cone-shaped and forms a conical abutting surface 541, and the end with a smaller area can be inserted into the tubular workpiece and abut against its inner wall, the end of the sub-top 540 away from the tubular workpiece is cylindrical, and the end of the sub-top 540 away from the tubular workpiece is provided with a rotating groove 542, and a smooth contact surface is formed in the rotating groove 542, and the fourth section of the main top 530 can be inserted into the rotating groove 542 and can rotate in the rotating groove 542.

[0057] Reference Figure 5 In order to facilitate the connection between the secondary top 540 and the main top 530 and to facilitate the fixation of the tubular workpiece, a centering component 560 is provided on the secondary top 540. The centering component 560 includes a limiting ring 561 coaxially fixedly connected to the secondary top 540. The limiting ring 561 is located on the side wall of the secondary top 540 where a rotating groove 542 is opened and is coaxially arranged with the rotating groove 542. The limiting ring 561 is threadedly connected to the centering ring 562 at one end away from the secondary top 540. A plurality of balls 564 are rotatably connected to the inner wall of the centering ring 562. The balls 564 are arranged at equal intervals along the circumference of the centering ring 562. The balls 564 can abut and roll with the gradient section 531 of the main top 530, and the abutment force between the balls 564 and the gradient section 531 can be adjusted by adjusting the position of the centering ring 562.

[0058] In order to facilitate observation of whether the main top 530 is in contact with the rotating groove 542 , an observation hole 563 is provided on the limiting ring 561 , and the observation hole 563 is provided along the length direction of the limiting ring 561 .

[0059] The sub-top 540 is provided with a sliding hole, which is provided along the length direction of the sub-top 540 and is provided at the cylindrical end of the sub-top 540. The sub-top 540 is provided with a restraining assembly 550, which includes a sliding ring 555 which is slidably connected to the sub-top 540. The sliding ring 555 is sleeved on the sub-top 540 and has a protrusion which slides in the sliding hole. At least three pressure rods 551 are rotatably connected to the sliding ring 555. The pressure rods 551 are rotatably connected to the sub-top 540. 1 extends to the top of the conical abutting surface 541 of the auxiliary top 540, and the end of the pressing rod 551 away from the sliding ring 555 rotates in the direction close to the axis of the auxiliary top 540; the end of the pressing rod 551 away from the sliding ring 555 is fixedly connected with the restraining ring 552, which abuts against the outer wall of the tubular workpiece. The side wall of the restraining ring 552 abutting against the tubular workpiece is provided with an arc-shaped abutting surface, so that it always abuts against the tubular workpiece as the pressing rod 551 rotates.

[0060] In order to improve the stability of the pressure rod 551, a locking ring 553 is commonly provided on the outer sides of the multiple pressure rods 551, and the locking ring 553 can slide along the axial direction of the secondary top point 540; the inner side wall of the locking ring 553 abuts against the side wall of the pressure rod 551 away from the axis of the secondary top point 540, and the locking ring 553 squeezes the pressure rod 551 as it moves away from the main top point 530; in order to facilitate the adjustment of the clamping force of the pressure rod 551 on the tubular workpiece, an adjusting ring 554 is threadedly connected to the secondary top point 540, and the adjusting ring 554 is connected to the locking ring 553. As the adjusting ring 554 rotates, the locking ring 553 slides along the axis of the secondary top point 540.

[0061] In order to facilitate the adjustment of the position of the pressure rod 551 when the adjusting ring 554 slides, a transmission assembly 570 is provided on the adjusting ring 554. The transmission assembly 570 includes a plurality of transmission rings 571 integrally arranged on the sliding ring 555. The plurality of transmission rings 571 are arranged along the circumference of the sliding ring 555. A spiral groove 573 is provided on the transmission ring 571. The spiral groove 573 is opened from one end to the other end in the length direction of the transmission ring 571, and is opened spirally along the axis of the sliding ring 555, and the spiral direction is the same as the spiral direction of the adjusting ring 554. A transmission rod 572 is fixedly connected to the adjusting ring 554, and the transmission rod 572 can slide into the spiral groove 573. After the transmission rod 572 slides into the spiral groove 573, the transmission ring 571 is driven to slide with the rotation, and the transmission rod 572 is located between the adjusting ring 554 and the locking ring 553.

[0062] In order to facilitate the tubular workpiece to enter between the restraining ring 552 and the secondary top 540, a support block 556 is fixedly connected to the secondary top 540, the support block 556 abuts against the pressure rod 551, and is located between the restraining ring 552 and the sliding ring 555. As the sliding ring 555 slides, the support point of the support block 556 on the pressure rod 551 changes, causing the pressure rod 551 to rotate, making it easier for the tubular workpiece to enter between the restraining ring 552 and the secondary top 540.

[0063] In order to facilitate the observation of the moving distance of the adjustment ring 554 and the locking ring 553, an identification ruler 557 is provided on the adjustment ring 554, and the identification ruler 557 is arranged at equal intervals along the circumference of the adjustment ring 554, and marking lines are provided on the circumferential side wall of the secondary top 540, and the marking lines are arranged along the length direction of the secondary top 540 to indicate the scale on the identification ruler 557.

[0064] The implementation principle of a lathe for vibrating rod turning in the embodiment of the present application is as follows: when turning a tubular workpiece, first place the tubular workpiece on a work surface, then determine the model and specification of the secondary center 540 according to the outer diameter and wall thickness of the tubular workpiece, then sleeve the limiting ring 561 on the secondary center 540 on the main center 530, and according to the model and specification of the tubular workpiece, rotate the adjusting ring 554 so that the adjusting ring 554 drives the locking ring 553 to approach the main center 530, and the adjusting ring 554 drives the transmission rod 572 to rotate when rotating, and the transmission rod 572 drives the transmission ring 571 to slide through the spiral groove 573, so that the transmission The movable ring 571 drives the sliding ring 555 to slide; then the tubular workpiece is inserted into the chuck 300 and fixed with the chuck 300, and then the movable handle is rotated to drive the movable screw to rotate, and the movable screw drives the adjusting seat 510 to slide, and the adjusting seat 510 drives the main center point 530 to approach the tubular workpiece until the conical abutting surface 541 of the secondary center point 540 abuts against the inner wall of the tubular workpiece, and then the adjusting ring 554 is rotated in the opposite direction, so that the locking ring 553 abuts against the pressure rod 551, and the pressure rod 551 drives the restraining ring 552 to squeeze the outer wall of the tubular workpiece, and the abutting position is close to the contact position of the conical abutting surface 541.

[0065] When the main center 530 does not abut against the rotating groove 542 or the abutment is too tight, the abutment force between the ball 564 and the gradient section 531 is changed by rotating the centering ring 562 , thereby reducing the abutment force against the rotating groove 542 .

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lathe for vibrating rod turning, comprising: A bed (100), a turning mechanism (200) slidably disposed on the bed (100), a chuck (300) rotatably disposed on the bed (100) for fixing one end of a tubular workpiece, and a rotating mechanism disposed on the bed (100) for driving the chuck (300) to rotate, characterized in that it also includes: a top mechanism (500) disposed on the bed (100) for fixing the other end of the tubular workpiece, wherein the top mechanism (500) includes: An adjustment seat (510) slides on the bed (100) and moves closer to or farther away from the tubular workpiece; A moving assembly (520) is disposed on the bed (100) and is connected to the adjustment seat (510) to drive the adjustment seat (510) to slide; A main center (530) is disposed on the adjustment seat (510) and is coaxially arranged with the chuck (300); The auxiliary tip (540) is detachably arranged on the main tip (530), abuts against the inner circle of the tubular workpiece to form a conical abutting surface (541), and has a rotation groove (542) at one end away from the tubular workpiece, and the end of the main tip (530) rotates in the rotation groove (542); A restraining assembly (550) is provided at the end of the secondary top (540), and the restraining assembly (550) comprises: A plurality of pressure rods (551) are provided and are all provided on the secondary top (540) and extend above the conical abutment surface (541); A restraining ring (552) is arranged corresponding to the pressure rod (551) and abuts against the outer wall of the tubular workpiece; The pressure rod (551) is rotatably disposed on the secondary top (540), and one end away from the secondary top (540) approaches the main top (530); the restraining assembly (550) further comprises: A locking ring (553) is sleeved on the outer sides of the plurality of pressure rods (551) and is slidable along the length direction of the secondary top (540); An adjusting ring (554) is threadedly connected to the secondary top (540) and is connected to the locking ring (553) for adjusting the position of the locking ring (553); The restraint assembly (550) further includes: A sliding ring (555) slides on the auxiliary top (540) along the length direction of the auxiliary top (540) and is connected to the pressure rod (551) for adjusting the position of the pressure rod (551); A centering component (560) is provided at one end of the secondary top (540) close to the main top (530), and the centering component (560) comprises: A limiting ring (561) is arranged on the side wall of the secondary top (540) on which the rotating groove (542) is formed, and is coaxially arranged with the rotating groove (542); A centering ring (562) is threadedly disposed on the limiting ring (561), and a plurality of balls (564) are rotatably connected to the inner wall thereof; the plurality of balls (564) are coaxially disposed with the main top (530) and are rollingly connected to the outer wall of the main top (530); A gradient section (531) is formed on the main top (530), the gradient section (531) is conical, and the cross-sectional area of ​​one end close to the auxiliary top (540) is smaller than the cross-sectional area away from the auxiliary top (540), and the ball (564) is rollingly connected to the gradient section (531).

2. The lathe for vibrating rod turning according to claim 1, characterized in that: The restraint assembly (550) further includes: A support block (556) is arranged on the secondary top (540), and the pressure rod (551) is in contact with the support block (556) near the side wall of the secondary top (540). As the pressure rod (551) slides, the restraining ring (552) moves closer to or farther from the tubular workpiece.

3. The lathe for vibrating rod turning according to claim 1, characterized in that: The adjustment ring (554) is provided with marking scales (557), which are arranged at equal intervals along the circumference of the adjustment ring (554) and are used to assist in adjusting the position of the sliding ring (555).

4. The lathe for vibrating rod turning according to claim 1, characterized in that: The limiting ring (561) is provided with an observation hole (563) for observing whether the main tip (530) has entered the rotating groove (542).

5. The lathe for vibrating rod turning according to claim 1 or 2, characterized in that: The adjusting ring (554) is provided with a transmission assembly (570), and the transmission assembly (570) comprises: A transmission ring (571) is arranged on the sliding ring (555), and a plurality of spiral grooves (573) are provided on the peripheral side wall. The spiral grooves (573) are opened from one end to the other end along the length direction of the transmission ring (571) and are opened spirally along the axis of the transmission ring (571); A transmission rod (572) is arranged on the adjustment ring (554); the transmission rod (572) slides in the spiral groove (573) and can slide out of the spiral groove (573).

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