Threading machine tool assembly and threading machine

Abstract

The present invention relates to a threading machine tool assembly and a threading machine. The threading machine tool assembly includes a feed shaft, a connecting flange, a cutter disc disposed on the connecting flange, a pair of cutter seats symmetrically slidably disposed on the cutter disc, and a gear shaft driven by the feed shaft to synchronously retract or expand the paired cutter seats. The threading machine includes a clamping fixture, a base, a worktable slidably disposed on the base and provided with a threading machine tool, a first drive component for driving the cutter seats to synchronously retract or expand, a second drive component for driving the connecting flange to rotate, and a third drive component for driving the worktable to slide on the base. The cutter seats of the present invention can be quickly switched to any spacing, and pipes of various diameters from large to small can be processed on the same device, and threads of any length can be processed at the same time.

Description

Technical Field

[0001] The invention provides a threading machine tool assembly and a threading machine, which are mainly used for threading pipes (steel pipes) and belong to the technical field of pipe thread processing. Background Art

[0002] During the current pipeline (steel pipe) laying process, the pipeline needs to be threaded (i.e., threaded). The existing threading machine adjusts the blade spacing manually, which takes a long time, is time-consuming and labor-intensive, and cannot be adjusted synchronously.

[0003] Chinese utility model CN216502819U discloses "a pipe thread processing cutter disc", which is connected to a moving block equipped with a blade and is provided with a push rod. The push rod is located on the central axis of the cutter disc, and one end of the push rod is provided with a push block that matches the moving block. The push block is provided with an inclined guide block, and the moving block is provided with an inclined guide groove that matches the inclined guide block. The inclined guide block is slidably connected in the inclined guide groove.

[0004] The above technical solution overcomes the existing difficulties in adjusting blades, allowing for synchronous adjustment of the four blades. However, due to the limitations of the push rod and oblique guide block, the distance between the blades is limited, making it impossible to process pipes with relatively large diameters. In other words, it is impossible to process a wide range of pipe diameters from large to small on the same device. Furthermore, the cutterhead is installed on a threading machine, and due to its push rod design, the movement distance of the entire cutterhead on the threading machine is limited, making it impossible to process relatively long threads. Summary of the Invention

[0005] The purpose of the present invention is to provide a threading machine tool assembly and a threading machine, the tool holders of which can be quickly switched to any spacing, and pipes of various diameters from large to small can be processed on the same device, and threads of longer lengths can be processed at the same time.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A threading machine tool assembly includes a feed shaft, a connecting flange, a cutter disc arranged on the connecting flange, a cutter seat slidably arranged on the cutter disc, and a gear shaft driving the cutter seat; a pair or more cutter seats are arranged on the cutter disc, and the cutter seats are evenly and symmetrically arranged on the cutter disc;

[0008] The gear shaft includes a shaft handle, a first gear and a rack rod from bottom to top;

[0009] The cutter disc is provided with an axis hole, and a second gear is fixedly provided at the bottom of the cutter disc at the axis hole;

[0010] The feed shaft is connected to an eccentric disk with an eccentric hole at the bottom, and the eccentric disk is connected to the internal gear;

[0011] The internal gear is provided with two layers of gear teeth from the inside to the outside, namely the first gear teeth and the second gear teeth;

[0012] The rack rod of the gear shaft passes through the second gear and the shaft hole and protrudes from the upper part of the cutter disc. The first gear is superimposed on the second gear. The shaft handle of the gear shaft passes through the internal gear and is inserted into the eccentric hole of the eccentric disc.

[0013] The internal gear is sleeved on the outer circumference of the first gear and the second gear, the first gear teeth of the internal gear correspond to the first gear, and the second gear teeth correspond to the second gear; the number of teeth of the first gear is greater than the number of teeth of the first gear, and the number of teeth of the second gear is greater than the number of teeth of the second gear;

[0014] Each knife seat is provided with a rack, the tooth surface of the rack faces the rack rod of the gear shaft, and the tooth surface of the rack is meshed with the rack rod; a blade installation position is provided on the side of the knife seat facing the rack rod;

[0015] The feed shaft drives the eccentric disk to rotate, driving the internal gear to rotate. The first gear teeth of the internal gear mesh with the first gear, driving the gear shaft to rotate, thereby driving the tool holder to retract or open synchronously; at the same time, the second gear teeth avoid the second gear;

[0016] The connecting flange is fixedly connected to the cutter disc, and the connecting flange is driven to rotate, thereby driving the cutter disc to rotate.

[0017] The cutter disc is provided with a guide groove, and the cutter seat is arranged in the guide groove.

[0018] The cross section of the guide groove is in a cross shape, and the cross section of the tool holder matches the cross section of the guide groove to form a cross shape and is inserted into the guide groove.

[0019] The cutter disc is provided with four guide grooves which are perpendicular to each other, and the four cutter seats are arranged in the four guide grooves.

[0020] The cutter disc is circular and is provided with four guide grooves perpendicular to each other. The shaft hole is provided at the center of the cutter disc. The connecting flange is provided as a circle concentric with the cutter disc.

[0021] The connecting flange is provided with a first through hole, and the first through hole is arranged at the center position of the connecting flange.

[0022] The eccentric disk and the internal gear are located in the first through hole of the connecting flange.

[0023] The number of teeth of the first gear is one more than the number of teeth of the first gear, and the number of teeth of the second gear is one more than the number of teeth of the second gear.

[0024] A pipe threading machine includes a clamping fixture for clamping a pipe, a base, and a workbench. The workbench is slidably arranged on the base. A pipe threading machine tool is arranged on the workbench, as well as a first driving component for driving the tool holder to synchronously retract or expand and a second driving component for driving a connecting flange to rotate. The first driving component is connected to a feed shaft, and the second driving component is connected to the connecting flange.

[0025] A third driving component is also provided for driving the workbench to slide on the base.

[0026] The advantages of the present invention are: 1. The drive design of the feed shaft, eccentric disk and internal gear makes the rotation of the gear shaft and the cutter disc non-interfering with each other; the synchronous retraction or opening of the cutter seat on the cutter disc is achieved, and the cutter seat is driven to rotate without interfering with the connection flange; 2. The cutter disc is provided with a guide groove with a cross-shaped cross section, and the cutter seat is also correspondingly provided with a cross-shaped cross section. The cutter seat is inserted into the guide groove, which makes the movement more stable and also facilitates the fixation of the cutter seat, thereby effectively reducing the error; 3. The cutter seat is horizontally arranged on the cutter disc, and the cooperation of the gear shaft and the cutter seat rack makes the spacing between the blades to be opened to a larger range, so that the blades can be quickly switched to any spacing, and both small-diameter pipes and large-diameter pipes can be processed on the same threading machine; 4. The threading machine of the present invention slides the threading tool assembly on the base, and has a larger adjustment space for the distance of the processing pipe moving back and forth. At the same time, the cutter seat is horizontally arranged on the cutter disc, and the cutter seat can be set at different heights. Such a threading machine can process threads of longer distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the threading machine tool assembly of the present invention;

[0028] Figure 2 This is an exploded view of the threading machine tool assembly of the present invention;

[0029] Figure 3 is a cross-sectional view of a threading machine tool of the present invention;

[0030] Figure 4 yes Figure 3 Explosion diagram at point A in the middle;

[0031] Figure 5 It is a schematic diagram of a threading machine of the present invention.

[0032] In the figure: 1-feed shaft; 2-connecting flange; 21-first through hole; 3-cutter disc; 31-shaft hole; 32-guide groove; 4-cutter seat; 41-rack; 5-blade; 6-gear shaft; 61-shaft handle; 62-first gear; 63-rack rod; 7-eccentric disk; 71-eccentric hole; 8-inner gear; 81-first gear tooth; 82-second gear tooth; 9-second gear; 10-clamping fixture; 11-base; 12-workbench; 13-threading tool; 14-first drive component; 15-second drive component; 16-third drive component. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to the accompanying drawings, which are for illustrative purposes only and are not to be construed as limiting the present invention.

[0034] To more concisely illustrate this embodiment, some components well known to those skilled in the art but not relevant to the main content of this invention may be omitted from the drawings or descriptions. In addition, for ease of description, some components may be omitted, enlarged, or reduced in size in the drawings, but they do not represent the dimensions or entire structure of the actual product.

[0035] The present invention relates to a threading machine tool assembly, such as Figure 1 、 2 As shown, it includes a feed shaft 1, a connecting flange 2, a cutter disc 3 arranged on the connecting flange 2, a cutter seat 4 slidably arranged on the cutter disc 3, and a gear shaft 6 driving the cutter seat 4; a pair or more cutter seats 4 are arranged on the cutter disc 4, and the cutter seats 4 are evenly and symmetrically arranged on the cutter disc 3;

[0036] Preferably, the cutterhead 3 is provided with a guide groove 32, and the cutter seat 4 is disposed within the guide groove 32. The cutterhead 3 is circular and has four guide grooves 32 arranged perpendicular to each other. The axial hole 31 is located at the center of the cutterhead 3; the connecting flange 2 is configured as a circle concentric with the cutterhead 3. The connecting flange 2 is provided with a first through hole 21, which is located at the center of the connecting flange 2 and communicates with the axial hole 31.

[0037] Furthermore, in order to increase the sliding stability of the tool holder 3, as Figure 2 As shown, the cutter disc 3 is provided with four guide grooves 32 which are perpendicular to each other, and the four cutter seats 4 are arranged in the guide grooves 32 .

[0038] Furthermore, in order to increase the sliding stability of the tool holder 3, the cross-section of the guide groove 32 is cross-shaped, and the cross-section of the tool holder 4 is matched with the cross-section of the guide groove 32 and inserted into the guide groove 32, so that the tool holder 4 can slide stably in the guide groove 32. When it reaches the set position, it is convenient to fix it, which greatly reduces the error of thread processing.

[0039] like Figure 2As shown, the cutter disc 3 is provided with an axial hole 31 , and a second gear 9 is fixedly provided at the bottom of the cutter disc 3 at the axial hole 31 .

[0040] like Figure 2 、 Figure 4 As shown, the gear shaft 6 includes, from bottom to top, a shaft handle 61 , a first gear 62 and a rack rod 63 .

[0041] like Figure 2 、 Figure 3 As shown, the rack rod 63 of the gear shaft 6 passes through the second gear 9 and the shaft hole 31 and protrudes from the upper part of the cutter disc 3, and the first gear 62 is superimposed on the second gear 9.

[0042] like Figure 2 As shown, each knife seat 4 is provided with a rack 41, and the tooth surface of the rack 41 is facing the rack rod 63 of the gear shaft 6, and the tooth surface of the rack 41 is engaged with the rack rod 63; a blade 5 installation position is provided on the side of the knife seat 4 facing the rack rod 63; when in use, it can be set manually, for example, it can be set to: when the gear shaft 6 rotates clockwise, the knife seats 4 in the opposite direction slide together under the drive of the rack 41; when the gear shaft 6 rotates counterclockwise, the knife seats 4 in the opposite direction slide open under the drive of the rack 41, thereby realizing the synchronous retraction or opening of the four knife seats 4.

[0043] Because the tool holder 4 is arranged on the surface of the cutter disc 3, the blade 5 is arranged on the tool holder 3, and the tool holder 4 slides on the horizontal plane of the cutter disc 3, the spacing of the blades 5 can be quickly and arbitrarily adjusted and switched, and pipes of different diameters can be processed, especially pipes with large diameters; and in the depth direction, tool holders 4 of various heights can be prepared according to production needs, so that the threading machine can process threads of a larger distance.

[0044] The gear shaft 6 of the present invention is driven by the feed shaft 1. The feed shaft 1 is connected to an eccentric disk 7 having an eccentric hole 71 at the bottom, and the eccentric disk 7 is connected to an internal gear 8. The shaft shank 61 of the gear shaft 6 passes through the internal gear 8 and is inserted into the eccentric hole 71 of the eccentric disk 7. The internal gear 8 is sleeved on the outer circumference of the first gear 62 and the second gear 9. The internal gear 8 is provided with two layers of gear teeth from the inside to the outside, namely, a first gear tooth 81 and a second gear tooth 82. The first gear teeth 81 of the internal gear 8 correspond to the first gear 62, and the second gear teeth 82 correspond to the second gear 9. In addition, the number of teeth of the first gear teeth 81 is greater than the number of teeth of the first gear 62, and the number of teeth of the second gear teeth 82 is greater than the number of teeth of the second gear 9. Preferably, the number of teeth of the first gear teeth 81 is one more than the number of teeth of the first gear 62, and the number of teeth of the second gear teeth 82 is one more than the number of teeth of the second gear 9. In this way, when the internal gear 8 is engaged with the first gear 62 , it will avoid the second gear 9 . Similarly, when the internal gear 8 is engaged with the second gear 9 , it will avoid the first gear 62 .

[0045] Driven by the driving mechanism, the feed shaft 1 drives the eccentric disk 7 to rotate, driving the internal gear 8 to rotate, the first gear teeth 81 of the internal gear 8 engage with the first gear 62, driving the gear shaft 6 to rotate, thereby driving the tool holder 4 to retract or open synchronously; due to the eccentric effect of the eccentric disk 7, the second gear teeth 82 of the internal gear 8 do not engage with the second gear 9, so that the retraction or opening of the tool holder 4 will not affect the state of the cutter disc 3.

[0046] Similarly, the connecting flange 2 is fixedly connected to the cutter disc 3 , and the cutter disc 3 is driven to rotate by driving the connecting flange 2 to rotate. The rotation of the cutter disc 3 will not affect the retraction or expansion of the cutter seat 4 .

[0047] The eccentric disk 7 and the internal gear 8 are located in the first through hole 21 of the connecting flange 2 .

[0048] A threading machine, such as Figure 5 As shown, it includes a clamping fixture 10 for clamping the pipe, a base 11, and a workbench 12. The workbench 12 is slidably arranged on the base 11. The workbench 12 is provided with the aforementioned threading machine tool 13, as well as a first driving component 14 for driving the tool holder 4 to synchronously retract or expand and a second driving component 15 for driving the connecting flange 2 to rotate. The first driving component 14 is connected to the feed shaft 1, and the second driving component 15 is connected to the connecting flange 2.

[0049] A third driving component 16 is also provided to drive the workbench 12 to slide on the base 11 .

[0050] During use, first clamp the pipe on the clamping fixture 10, start the first driving component 14, the feed shaft 1 rotates through the internal gear 8 to drive the gear shaft 6 to rotate, and the tool holder 4 opens under the drive of the rack 41, and then start the third driving component 16, and the workbench 12 slides toward the pipe direction, so that the threading machine tool 13 is sleeved on the pipe; then start the first driving component 14, the feed shaft 1 rotates in the opposite direction through the internal gear 8 to drive the gear shaft 6 to rotate in the opposite direction, and the tool holder 4 is retracted under the drive of the rack 41, and the blade 5 rests on the outer wall of the pipe to fix the tool holder 4; start the second driving component 15, drive the connecting flange 2 to rotate, drive the cutter disc 2 to rotate, and at the same time start the third driving component 16 to slide the workbench 12 in the direction away from the pipe. In this way, the cutter disc 2 rotates and slides in the direction away from the pipe, and the blade 5 processes threads on the pipe.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, any equivalent changes and modifications made according to the content of the patent application of the present invention should fall within the technical scope of the present invention.

Claims

1. A threading machine tool assembly, characterized in that: It comprises a feed shaft (1), a connecting flange (2), a cutter disc (3) arranged on the connecting flange (2), a cutter seat (4) slidably arranged on the cutter disc (3), and a gear shaft (6) driving the cutter seat (4); a pair or more than one pair of cutter seats (4) are arranged on the cutter disc (3), and the cutter seats (4) are evenly and symmetrically arranged on the cutter disc (3); The gear shaft (6) comprises, from bottom to top, a shaft handle (61), a first gear (62) and a rack rod (63); The cutter disc (3) is provided with an axial hole (31), and a second gear (9) is fixedly provided at the bottom of the cutter disc (3) at the axial hole (31); The feed shaft (1) is connected to an eccentric disk (7) having an eccentric hole (71) at the bottom, and the eccentric disk (7) is connected to an internal gear (8); The internal gear (8) is provided with two layers of gear teeth from the inside to the outside, namely the first gear teeth (81) and the second gear teeth (82); The rack rod (63) of the gear shaft (6) passes through the second gear (9) and the shaft hole (31) and protrudes from the upper part of the cutter disc (3); the second gear (9) is located above the first gear (62); the shaft shank (61) of the gear shaft (6) passes through the internal gear (8) and is inserted into the eccentric hole (71) of the eccentric disc (7); The internal gear (8) is sleeved on the outer circumference of the first gear (62) and the second gear (9); the first gear teeth (81) of the internal gear (8) correspond to the first gear (62), and the second gear teeth (82) correspond to the second gear (9); the number of teeth of the first gear teeth (81) is greater than the number of teeth of the first gear (62), and the number of teeth of the second gear teeth (82) is greater than the number of teeth of the second gear (9); Each knife seat (4) is provided with a rack (41), the tooth surface of the rack (41) faces the rack rod (63) of the gear shaft (6), and the tooth surface of the rack (41) is meshed with the rack rod (63); a blade (5) installation position is provided on the side of the knife seat (4) facing the rack rod (63); The feed shaft (1) drives the eccentric disk (7) to rotate, thereby driving the internal gear (8) to rotate. The first gear teeth (81) of the internal gear (8) mesh with the first gear (62), driving the gear shaft (6) to rotate, thereby driving the knife seat (4) to synchronously retract or synchronously open. At the same time, the second gear teeth (82) avoid the second gear (9). The connecting flange (2) is fixedly connected to the cutter disc (3), and the connecting flange (2) is driven to rotate, thereby driving the cutter disc (3) to rotate.

2. The threading machine tool assembly according to claim 1, characterized in that: The cutter disc (3) is provided with a guide groove (32), and the cutter seat (4) is provided in the guide groove (32).

3. The threading machine tool assembly according to claim 2, characterized in that: The cross section of the guide groove (32) is cross-shaped, and the cross section of the knife seat (4) matches the cross section of the guide groove (32) to form a cross shape and is inserted into the guide groove (32).

4. The threading machine tool assembly according to claim 2, characterized in that: The cutter disc (3) is provided with four guide grooves (32) that are perpendicular to each other, and the four cutter seats (4) are arranged in the four guide grooves (32).

5. The threading machine tool assembly according to claim 2, characterized in that: The cutter disc (3) is circular and is provided with four guide grooves (32) perpendicular to each other. The shaft hole (31) is provided at the center of the cutter disc (3); and the connecting flange (2) is provided in a circular shape concentric with the cutter disc (3).

6. The threading machine tool assembly according to claim 5, characterized in that: The connecting flange (2) is provided with a first through hole (21), and the first through hole (21) is provided at the center of the connecting flange (2).

7. The threading machine tool assembly according to claim 6, characterized in that: The eccentric disk (7) and the internal gear (8) are located in the first through hole (21) of the connecting flange (2).

8. The threading machine tool assembly according to claim 1, characterized in that: The number of teeth of the first gear (81) is one more than the number of teeth of the first gear (62), and the number of teeth of the second gear (82) is one more than the number of teeth of the second gear (9).

9. A threading machine, comprising a clamping fixture (10) for clamping a pipe, a base (11), and a workbench (12), wherein the workbench (12) is slidably arranged on the base (11), characterized in that: The workbench (12) is provided with a threading machine tool (13) as described in claims 1 to 7, as well as a first driving component (14) for driving the tool holder (4) to synchronously retract or expand, and a second driving component (15) for driving the connecting flange (2) to rotate, the first driving component (14) being connected to the feed shaft (1), and the second driving component (15) being connected to the connecting flange (2); A third driving component (16) is also provided for driving the workbench (12) to slide on the base (11).

Images