Inlet pipe center positioning device of numerical control pipe threading lathe

Abstract

The invention relates to the technical field of lathe machining, in particular to a numerical control pipe threading lathe inlet pipe center positioning device which comprises a machine body, a machine head is arranged on the machine body, the machine head slides in the length direction of the machine body, a clamping disc is rotationally arranged on the machine head, and a clamping jaw is installed on the clamping disc. A plurality of supporting assemblies are evenly arranged on the machine body in the length direction, each supporting assembly comprises a supporting table, a supporting ring and a plurality of supporting blocks, the supporting tables are installed on the machine body, the supporting rings are installed on the supporting tables, and the supporting blocks are arranged in the supporting rings in a synchronous sliding mode. And supporting balls are embedded in the ends, facing the center direction of the supporting ring, of the supporting blocks, and the effect of reducing pipe production errors is achieved.

Description

Technical Field

[0001] The present application relates to the field of lathe processing, and in particular to a pipe feeding center positioning device for a CNC pipe thread lathe. Background Art

[0002] CNC lathes are large-scale production equipment used for turning processing. When processing longer pipes, CNC lathes will use fixed tools to drive the pipe to feed due to the travel limitation of the tool on the CNC lathe. For example, when processing external threads on drill collars, the thread turning tool is fixed and the drill collar is fed to process the external threads. However, due to the long pipe, it is difficult to ensure the straight feeding of the pipe, which can easily lead to production errors in the processed pipe. Summary of the invention

[0003] In order to reduce the production error of pipes, the present application provides a pipe feeding center positioning device for a CNC pipe threading lathe.

[0004] The present application provides a CNC pipe thread lathe pipe inlet center positioning device adopts the following technical solution: A device for center positioning of a pipe feeder of a CNC pipe thread lathe comprises a machine body, a machine head is arranged on the machine body, the machine head slides along the length direction of the machine body, a clamping disk is rotatably arranged on the machine head, a clamping claw is installed on the clamping disk, a plurality of support components are evenly arranged along the length direction on the machine body, the support components comprise a support platform, a support ring and a support block, the support platform is installed on the machine body, the support ring is installed on the support platform, there are a plurality of support blocks, the plurality of support blocks are synchronously slidably arranged in the support ring, a support ball is embedded in one end of the support block facing the center direction of the support ring.

[0005] By adopting the above technical solution, the pipe is supported by the support assembly, which reduces the probability that the pipe at the end away from the machine head is subjected to greater gravity and causes the entire pipe to tilt, thereby making the pipe transportation more straight and reducing the production error of the pipe.

[0006] Optionally, an adjustment mechanism is provided between the support ring and the support block, the adjustment mechanism includes an adjusting rod, an adjusting spring and an adjusting ring, a number of adjusting rods are provided corresponding to the support blocks, the number of adjusting rods are respectively fixed on the number of support blocks toward one end of the adjusting ring, the adjusting rod is slidably passed through the support ring, and the adjusting rod extends out of the support ring and is provided with a chamfer at one end, the adjusting spring is sleeved on the adjusting rod, one end of the adjusting spring abuts against the inner wall of the support ring and the other end abuts against the support block, the adjusting spring drives the support block to slide toward the direction away from the center of the support ring through elastic force, the adjusting ring is threadedly connected to the outer wall of the support ring, and the adjusting ring drives the adjusting rod to slide toward the center of the support ring by rotating to abut the chamfer.

[0007] Optionally, a groove is opened in the center of the clamping disk, and a positioning assembly is arranged in the groove. The positioning assembly includes a positioning ring, a positioning block and a positioning spring. The positioning ring is installed on the clamping disk in the groove. There are several positioning blocks, and the several positioning blocks are synchronously slidably arranged in the positioning ring. Several positioning springs are arranged corresponding to the positioning blocks. The positioning springs are arranged between the positioning ring and the positioning block. The elastic force of the positioning spring drives the positioning block to slide toward the center of the positioning ring.

[0008] Optionally, a driving mechanism is provided between the clamping jaw and the positioning block, and when the clamping jaw slides toward a direction close to the center of the clamping disk, the clamping jaw drives the positioning block to slide toward a direction away from the center of the positioning ring through the driving mechanism.

[0009] Optionally, the positioning ring can be detachably arranged on the clamping jaw plate, and the supporting ring can be detachably arranged on the supporting platform.

[0010] Optionally, a slide groove is provided on the machine body along the length direction of the machine body, a driving block is fixedly provided on the machine head, the driving block slides in the slide groove through a cylinder, and a sliding block is fixedly provided on the support platform, the sliding block slides in the slide groove.

[0011] Optionally, a reinforcement mechanism is provided on the slider, and the reinforcement mechanism includes an abutment block and a reinforcement spring. The abutment block is slidably arranged on the side wall of the slider, and the reinforcement spring is arranged between the abutment block and the slider. The reinforcement spring drives the abutment block to abut against the side wall of the slide groove.

[0012] Optionally, a linkage block is provided on the slider, and when the driving block slides and hits the linkage block, the linkage block slides on the slider, and the sliding of the linkage block drives the abutment block to slide away from the side wall of the slide groove.

[0013] Optionally, the support ring includes a lower half ring and an upper half ring, the lower half ring is detachably mounted on the support platform, the upper half ring is detachably mounted on the lower half ring, and the upper half ring is mounted on the lower half ring via an adjusting ring.

[0014] Optionally, the machine body includes a head and a tail, and the head and the tail are respectively arranged at two ends of the length direction of the CNC lathe.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The pipe is supported by the support assembly to reduce the probability that the pipe at the end far from the machine head is subjected to a greater gravity and causes the pipe to tilt as a whole, thereby making the pipe conveying more straight and reducing the production error of the pipe. The setting of the ball can reduce the friction of the pipe when it slides and feeds in the support ring; 2. The adjustment mechanism can synchronously adjust the support block so that the ball on the support block can abut against the pipe, so that the pipe is located in the center of the support ring, thereby centering the pipe and reducing the probability of the pipe being offset; 3. Temporarily position the pipe through the positioning assembly, and make sure that the pipe groove is at the center of the clamping plate before the clamping jaws are clamped and fixed, so as to facilitate the installation and positioning of the support mechanism; the driving block drives the abutting driving rod to slide through the sliding of the clamping jaws, and the sliding of the driving rod drives the hinged rod to rotate, and the rotation of the hinged rod drives the positioning block to separate from the pipe, thereby reducing the influence of the positioning mechanism on the pipe after the clamping jaws are clamped and fixed; 4. Through the detachable positioning ring and support ring, the support ring and positioning ring are installed on the pipe before the pipe is installed, and the support block and positioning block are adjusted, so as to facilitate the subsequent installation of the pipe; 5. The abutment block is driven to separate from the side wall of the slide groove by the abutment linkage block, so that the machine head can drive the abutted support platform to slide, which reduces the probability of the pipe feeding driving the support platform when the support platform does not affect the sliding of the machine head, and can be driven by the machine head to slide when the support platform affects the machine head, reducing the probability of the support platform restricting the advancement of the machine head; 6. By removing the upper plate ring, the support ring can be used as a support member to support the pipe, thereby facilitating the guidance of the pipe during subsequent transportation at the tail. The support assembly can also be installed in a CNC lathe. By removing the upper half ring, the impact on the tool is reduced. The adjustment ring can be used to adjust the position of the support block and can also be used to fix the upper and lower half rings. The bolts on the lower half ring are provided with fixing bolts. Tightening the fixing bolts can fix the position of the support block. Before removing the upper half ring, first fix the support block on the lower half ring by tightening the fixing bolts to reduce the probability of the support block slipping under force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the structure of the nose of the embodiment of the present application.

[0018] Figure 3 It is a structural diagram of the support assembly of an embodiment of the present application.

[0019] Figure 4 yes Figure 3 Magnified view of part A in the middle.

[0020] Figure 5 yes Figure 2 Magnified view of part B in the middle.

[0021] Figure 6 yes Figure 3 Magnified view of section C in the middle.

[0022] Figure 7 It is a structural diagram of the connection status between the CNC lathe and the machine body.

[0023] Figure 8It is a cross-sectional schematic diagram of the baffle at the CNC lathe.

[0024] In the figure, 0, CNC lathe; 1, machine body; 101, head; 102, tail; 2, machine head; 3, clamping plate; 4, clamping claw; 5, support assembly; 51, support table; 52, support ring; 521, lower half ring; 522, upper half ring; 53, support block; 6, ball bearing; 7, adjustment mechanism; 71, adjustment rod; 72, adjustment spring; 73, adjustment ring; 8, chamfer; 9, groove; 10, positioning assembly; 1001, positioning ring; 1002, positioning block; 1003, positioning spring; 11, Driving mechanism; 111, driving slider; 112, driving rod; 113, hinged rod; 12, positioning block; 13, positioning slot; 14, slide groove; 15, driving block; 16, slider; 17, reinforcement mechanism; 171, abutment block; 172, reinforcement spring; 18, linkage block; 19, mounting device; 191, mounting socket; 192, mounting block; 1921, connecting plate; 1922, insertion plate; 20, baffle; 21, torsion spring; 22, ratchet; 23, pawl; 24, mounting hole. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-6 The present application is further described with specific embodiments: First of all, it should be noted that in the description of this application, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and other directional words appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application; in addition, if the terms "first", "second", "third" and other numerical quantifiers appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", and "connected" appear, they should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, a limited connection such as an interference fit, a transition fit, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium; therefore, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0026] The present application embodiment discloses a pipe feeding center positioning device for a CNC pipe thread lathe, referring to Figure 1 , Figure 2 and Figure 3, including a body 1 erected on the ground, the body 1 includes a head 101 and a tail 102, the head 101 and the tail 102 are respectively erected on the ground at both ends of the length direction of the CNC lathe 0, a head 2 is arranged on the head 101 of the body 1, the head 2 is driven by a rodless cylinder to slide along the length direction of the body 1, a clamping plate 3 is rotatably arranged on the head 2, a motor is installed on the head 2, the clamping plate 3 is driven by the motor to rotate on the head 2, and a clamping claw 4 is installed on the clamping plate 3. The clamping plate 3 and the clamping claw 4 in this embodiment are the chuck and the clamping claw of a three-jaw chuck, and the number of the clamping claw 4 is set in three, and a plurality of support assemblies 5 are evenly arranged on the body 1 along the length direction, and the plurality of support assemblies 5 are respectively arranged along the length direction of the body 1, A support assembly 5 is provided at both the head 101 and the tail 102, including a support platform 51 installed on the body 1, a support ring 52 installed on the support platform 51, and a plurality of support blocks 53 synchronously slidably arranged in the support ring 52. In this embodiment, three support blocks 53 are provided, and the three support blocks 53 are evenly distributed in the support ring 52. A support ball 6 is embedded in one end of the support block 53 facing the center direction of the support ring 52. The pipe is supported by the support assembly 5 to reduce the probability that the pipe at the end away from the head 2 is subjected to a greater gravity and causes the entire pipe to tilt, thereby making the transportation of the pipe straighter and reducing the production error of the pipe. The setting of the ball 6 can reduce the friction of the pipe when sliding and feeding in the support ring 52.

[0027] Reference Figure 3 and Figure 4 An adjustment mechanism 7 is provided between the support ring 52 and the support block 53. The adjustment mechanism 7 includes a plurality of adjustment rods 71 ​​corresponding to the support blocks 53, an adjustment spring 72 sleeved on the adjustment rod 71, and an adjustment ring 73 threadedly connected to the outer wall of the support ring 52. The plurality of adjustment rods 71 ​​are respectively fixed on one end of the plurality of support blocks 53 facing the adjustment ring 73. The adjustment rod 71 is slidably penetrated on the support ring 52. The end of the adjustment rod 71 extending out of the support ring 52 is provided with a chamfer 8. One end of the adjustment spring 72 abuts against the inner wall of the support ring 52 and the other end abuts against the support block 53. The adjustment spring 72 drives the support block 53 to slide in a direction away from the center of the support ring 52 through elastic force. The adjusting ring 73 slides toward or away from the adjusting rod 71 by rotating on the supporting ring 52. When the adjusting ring 73 slides toward the adjusting rod 71 by rotating, the abutting chamfer 8 drives the adjusting rod 71 to slide toward the center of the supporting ring 52. When the adjusting ring 73 slides toward the direction away from the adjusting rod 71 by rotating, the adjusting rod 71 slides toward the direction away from the center of the supporting ring 52 under the action of elastic force. The adjusting mechanism 7 can synchronously adjust the supporting block 53 so that the ball 6 on the supporting block 53 can abut against the pipe, so that the pipe is located in the center of the supporting ring 52, thereby centering the pipe and reducing the probability of the pipe being offset.

[0028] Reference Figure 1 , Figure 2and Figure 5 A groove 9 is provided at the center of the clamping disk 3, and a positioning assembly 10 is arranged in the groove 9. The positioning assembly 10 includes a positioning ring 1001, a positioning block 1002 and a positioning spring 1003. The positioning ring 1001 is installed on the clamping disk 3 in the groove 9. There are several positioning blocks 1002. In this embodiment, three positioning blocks 1002 are provided. Several positioning blocks 1002 are synchronously slidably arranged in the positioning ring 1001. Several positioning springs 1003 are provided corresponding to the positioning blocks 1002. The positioning spring 1003 is arranged between the positioning ring 1001 and the positioning block 1002. The elastic force of the positioning spring 1003 drives the positioning block 1002 to slide toward the center direction of the positioning ring 1001. The pipe is temporarily positioned by the positioning assembly 10. Before the clamping jaw 4 is clamped and fixed, it is determined that the pipe groove is in the center position of the clamping disk 3, thereby facilitating the installation and positioning of the support mechanism; a positioning spring 1003 is provided between the clamping jaw 4 and the positioning block 1002. Driving mechanism 11, when the clamping jaw 4 slides toward the center direction of the clamping disk 3, the clamping jaw 4 drives the positioning block 1002 to slide toward the center direction away from the positioning ring 1001 through the driving mechanism 11. The driving mechanism 11 includes a driving slider 111 installed on the clamping jaw 4, a driving rod 112 slidingly set on the positioning ring 1001, and a hinged rod 113 connected between the driving rod 112 and the positioning block 1002. The middle part of the hinged rod 113 is hinged to the top positioning ring 1001, one end of the hinged rod 113 in the length direction is hinged to the driving rod 112 and the other end is hinged to the positioning block 1002. When the clamping jaw 4 slides to clamp the pipe, the driving slider 111 drives the driving rod 112 to slide through the sliding of the clamping jaw 4, the sliding of the driving rod 112 drives the hinged rod 113 to rotate, and the rotation of the hinged rod 113 drives the positioning block 1002 to disengage from the pipe, thereby reducing the influence of the positioning mechanism on the pipe after the clamping jaw 4 is clamped and fixed.

[0029] Reference Figure 1 , Figure 2 and Figure 5 , the positioning ring 1001 is detachably arranged on the clamping jaw 4 disk, the positioning ring 1001 is fixedly provided with a positioning plug 12, and a positioning slot 13 is opened at the bottom of the groove 9 corresponding to the positioning plug 12, and the positioning ring 1001 is coaxially arranged with the clamping disk 3 through the positioning plug 12 and the positioning slot 13, the positioning plug 12 and the positioning slot 13 are both irregular shapes, and the positioning plug 12 can be inserted into the positioning slot 13 only when the positioning block 1002 on the positioning ring 1001 is aligned with the clamping jaw 4, and the support ring 52 is detachably arranged on the support platform 51, and the support ring 52 is detachably installed on the support platform 51 by bolts; through the detachability of the positioning ring 1001 and the support ring 52, the support ring 52 and the positioning ring 1001 are first installed on the pipe before the pipe is installed, and the support block 53 and the positioning block 1002 are adjusted, so as to facilitate the subsequent installation of the pipe.

[0030] Reference Figure 1, Figure 2 and Figure 6 A slide groove 14 is provided on the machine body 1 along the length direction of the machine body 1, a driving block 15 is fixed on the machine head 2, and the driving block 15 slides in the slide groove 14 through a rodless cylinder, and a slider 16 is fixed on the support platform 51, and the slider 16 slides in the slide groove 14; a reinforcement mechanism 17 is provided on the slider 16, and the reinforcement mechanism 17 includes a contact block 171 and a reinforcement spring 172, the contact block 171 is slidably arranged on the side wall of the slider 16, and the reinforcement spring 172 is arranged between the contact block 171 and the slider 16, and the reinforcement spring 172 drives the contact block 171 to contact the side wall of the slide groove 14; a linkage block 18 is provided on the slider 16, and the linkage block 18 is slidably arranged on the slider 16, and a wedge-shaped surface is provided on the contact block 171, and the linkage block 18 abuts On the wedge surface, when the driving block 15 slides and hits the linkage block 18, the linkage block 18 slides on the slider 16, and the linkage block 18 slides and drives the abutment block 171 to slide away from the side wall of the slide groove 14 by abutting the wedge surface; the setting of the reinforcement mechanism 17 can reduce the probability of driving the support table 51 to slide when the pipe is fed, and at the same time, when the head 2 slides close to the support table 51, it can drive the abutment block 171 to separate from the side wall of the slide groove 14 by abutting the linkage block 18, so that the head 2 can drive the abutment support table 51 to slide, and when the support table 51 does not affect the sliding of the head 2, the probability of driving the support table 51 due to the pipe feeding is reduced, and when the support table 51 affects the head 2, it can be driven by the head 2 to slide, reducing the probability of the support table 51 restricting the advancement of the head 2.

[0031] Reference Figure 1 , Figure 7 and Figure 8, the CNC lathe 0 is also provided with a slide groove 14, the machine body 1 is installed on the CNC lathe 0 so that the slide groove 14 on the machine body 1 is aligned with the slide groove 14 on the CNC lathe 0, and a mounting device 19 is provided at the connection between the machine body 1 and the CNC lathe 0, the mounting device 19 includes a mounting socket 191 and a mounting plug 192, the mounting socket 191 is provided at both ends of the length direction of the CNC lathe 0, and the mounting plug 192 is provided at both ends of the length direction of the machine body 1. When the machine body 1 is connected to the CNC lathe 0, the mounting plug 192 on the machine body 1 is inserted into the mounting socket 191 on the CNC lathe 0, at this time, the slide groove 14 on the machine body 1 is aligned with the CNC lathe 0. The slide groove 14 on the CNC lathe 0 is aligned; the installation plug block 192 includes a connecting plate 1921 and an insert plate 1922, the connecting plate 1921 is horizontally arranged on the body 1, and the insert plate 1922 is vertically formed on the horizontal plate as a whole on the horizontal plate, the size of the installation socket 191 is the same as the size of the horizontal plate, a baffle 20 is arranged at the opening of the positioning rod socket, the baffle 20 is hingedly arranged on the CNC lathe 0, a torsion spring 21 is arranged between the baffle 20 and the CNC lathe 0, the elastic force of the torsion spring 21 drives the baffle 20 to be vertically arranged at the opening of the installation socket 191, a ratchet 22 is arranged on the baffle 20, and a ratchet 22 is arranged on the CNC lathe 0 There is a pawl 23 that cooperates with the ratchet 22. The pawl 23 of the ratchet 22 cooperates to limit the baffle 20 from rotating in the direction away from the mounting socket 191. When the insert plate 1922 enters the mounting socket 191, the insert plate 1922 abuts against the baffle 20 to drive the baffle 20 to rotate. After the baffle 20 rotates, the insert plate 1922 enters the mounting socket 191. Then, the baffle 20 is reset under the elastic force of the torsion spring 21, thereby preventing the insert plate 1922 from detaching from the mounting socket 191. The pawl 23 is set on the CNC lathe 0 by the sliding movement of the electric cylinder. The pawl 23 slides away from the ratchet 22. At this time, the pawl 23 contacts the baffle 20. The restriction on the rotation of the plate 20 is released, the baffle plate 20 can rotate normally in the direction away from the installation socket 191, and the insert plate 1922 can also drive the baffle plate 20 to rotate and disengage from the installation socket 191 by abutting against the baffle plate 20. At this time, the machine body 1 can be detached from the CNC lathe 0. In this embodiment, when the baffle plate 20 rotates to a horizontal level, it is flush with the bottom of the installation socket 191, thereby reducing the impact of the baffle plate 20 on the disassembly and assembly of the insert plate 1922; the installation plug 192 is slidably set on the machine body 1, and the installation plug 192 is embedded in the machine body 1 by sliding. The insert plate 1922 of the installation plug 192 is provided with a mounting hole 24, which is a stepped hole for countersunk bolts to fix the installation plug 192 on the machine body 1, and can also be used to grasp and pull the installation plug 192 to slide on the machine body 1.

[0032] Reference Figure 3 and Figure 4The support ring 52 includes a lower half ring 521 and an upper half ring 522. The lower half ring 521 is detachably mounted on the support platform 51 by bolts, and the upper half ring 522 is detachably mounted on the lower half ring 521. The upper half ring 522 is mounted on the lower half ring 521 by an adjusting ring 73. In this embodiment, one support block 53 is provided on the upper half ring 522, and two support blocks 53 are provided on the lower half ring 521. By removing the upper plate ring, the support ring 52 can be used as a support member to support the pipe, thereby facilitating the subsequent pipe to be transported to the tail 102. The support assembly 5 can also be installed in the CNC lathe 0 to guide the material. The influence on the tool can be reduced by removing the upper half ring 522. The adjusting ring 73 can be used to adjust the position of the support block 53 and can also be used to fix the upper half ring 522 and the lower half ring 521. The bolts on the lower half ring 521 are provided with fixing bolts. Tightening the fixing bolts can fix the position of the support block 53. Before removing the upper half ring 522, the support block 53 on the lower half ring 521 is fixed by tightening the fixing bolts to reduce the probability of the support block 53 slipping under force.

[0033] The implementation principle of the embodiment of the present application is as follows: the support platforms 51 are evenly installed in the machine body 1 and the CNC lathe 0, and the support rings 52 to be installed in the CNC lathe 0 and on the support platforms 51 of the tail 102 are sleeved on the pipe and adjusted according to the diameter of the pipe. After the adjustment is completed, the upper half ring 522 of the support ring 52 to be installed in the CNC lathe 0 and on the support platforms 51 of the tail 102 is disassembled and installed on the support platforms 51 of the CNC lathe 0 and the tail 102; the support ring 52 installed on the head 101 is sleeved on the pipe and adjusted according to the diameter of the pipe. It is arranged on the pipe and the position of the support block 53 is adjusted, and the positioning ring 1001 is installed on the pipe at the same time. Then, the positioning ring 1001 installed with the pipe is inserted into the groove 9, and the support ring 52 corresponds to the support platform 51. After the support ring 52 is installed on the support platform 51 by bolts, the pipe is clamped by the clamping claw 4, and the thread cutter in the CNC lathe 0 is moved to a position close to the head 101 of the body 1. The clamping plate 3 is rotated by the motor and the head 2 is driven to slide by the rodless cylinder to process the external thread on the outer surface of the pipe.

[0034] It should be noted that the above embodiments are only used to illustrate the present application and are not intended to limit the technical solutions described in the present application. Although the present application has been described in detail in this specification with reference to the above embodiments, a person of ordinary skill in the art should understand that a person of ordinary skill in the art can still modify or make equivalent substitutions to the present application, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present application should be included in the scope of the claims of the present application.

Claims

1. A pipe feeding center positioning device for a CNC pipe thread lathe, characterized in that: The invention comprises a machine body (1), wherein a machine head (2) is arranged on the machine body (1), wherein the machine head (2) slides along the length direction of the machine body (1), a clamping disk (3) is rotatably arranged on the machine head (2), and a clamping claw (4) is installed on the clamping disk (3), and a plurality of support components (5) are evenly arranged on the machine body (1) along the length direction, wherein the support components (5) comprise a support platform (51), a support ring (52) and a support block (53), wherein the support platform (51) is installed on the machine body (1), and the support ring (52) is installed on the support platform (51), and the plurality of support blocks (53) are synchronously slidably arranged in the support ring (52), and a support ball (6) is embedded at one end of the support block (53) facing the center direction of the support ring (52).

2. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 1, characterized in that: An adjustment mechanism (7) is provided between the support ring (52) and the support block (53), the adjustment mechanism (7) comprising an adjustment rod (71), an adjustment spring (72) and an adjustment ring (73), a plurality of adjustment rods (71) are provided corresponding to the support blocks (53), the plurality of adjustment rods (71) are respectively fixed to one end of the plurality of support blocks (53) facing the adjustment ring (73), the adjustment rod (71) is slidably inserted into the support ring (52), and a chamfer ( 8), the adjusting spring (72) is sleeved on the adjusting rod (71), one end of the adjusting spring (72) abuts against the inner wall of the support ring (52) and the other end abuts against the support block (53), the adjusting spring (72) drives the support block (53) to slide in a direction away from the center of the support ring (52) through elastic force, the adjusting ring (73) is threadedly connected to the outer wall of the support ring (52), and the adjusting ring (73) drives the adjusting rod (71) to slide in a direction close to the center of the support ring (52) by rotating and abutting the chamfer (8).

3. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 2, characterized in that: A groove (9) is provided at the center of the clamping disk (3), and a positioning assembly (10) is arranged in the groove (9). The positioning assembly (10) comprises a positioning ring (1001), a positioning block (1002) and a positioning spring (1003). The positioning ring (1001) is installed on the clamping disk (3) in the groove (9). There are a plurality of positioning blocks (1002), and the plurality of positioning blocks (1002) are synchronously slidably arranged in the positioning ring (1001). A plurality of positioning springs (1003) are arranged corresponding to the positioning blocks (1002). The positioning springs (1003) are arranged between the positioning ring (1001) and the positioning block (1002), and the elastic force of the positioning springs (1003) drives the positioning block (1002) to slide toward the center of the positioning ring (1001).

4. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 3, characterized in that: A driving mechanism (11) is provided between the clamping jaw (4) and the positioning block (1002); when the clamping jaw (4) slides toward a direction close to the center of the clamping disk (3), the clamping jaw (4) drives the positioning block (1002) to slide toward a direction away from the center of the positioning ring (1001) through the driving mechanism (11).

5. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 4, characterized in that: The positioning ring (1001) is detachably arranged on the clamping jaw (4) plate, and the supporting ring (52) is detachably arranged on the supporting platform (51).

6. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 5, characterized in that: A slide groove (14) is provided on the machine body (1) along the length direction of the machine body (1); a driving block (15) is fixedly provided on the machine head (2); the driving block (15) slides in the slide groove (14) through a cylinder; a sliding block (16) is fixedly provided on the support platform (51); the sliding block (16) slides in the slide groove (14).

7. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 6, characterized in that: The slider (16) is provided with a reinforcing mechanism (17), the reinforcing mechanism (17) comprising an abutting block (171) and a reinforcing spring (172), the abutting block (171) being slidably disposed on a side wall of the slider (16), the reinforcing spring (172) being disposed between the abutting block (171) and the slider (16), and the reinforcing spring (172) driving the abutting block (171) to abut against a side wall of the slide groove (14).

8. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 7, characterized in that: A linkage block (18) is provided on the slider (16); when the driving block (15) slides and hits the linkage block (18), the linkage block (18) slides on the slider (16); the sliding of the linkage block (18) drives the abutment block (171) to slide and detach from the side wall of the slide groove (14).

9. The device for positioning the pipe feed center of a CNC pipe thread lathe according to claim 8, characterized in that: The support ring (52) comprises a lower half ring (521) and an upper half ring (522); the lower half ring (521) is detachably mounted on the support platform (51); the upper half ring (522) is detachably mounted on the lower half ring (521); and the upper half ring (522) is mounted on the lower half ring (521) via an adjustment ring (73).

10. The device for positioning the pipe feeding center of a CNC pipe thread lathe according to claim 9, characterized in that: The machine body (1) comprises a head portion (101) and a tail portion (102), wherein the head portion (101) and the tail portion (102) are respectively arranged at two ends of the CNC lathe (0) in the length direction.

Images