CN112264681A

CN112264681A - Thread chasing tool for cutting double-line pipe thread

Info

Publication number: CN112264681A
Application number: CN202011218597.9A
Authority: CN
Inventors: 王军伟
Original assignee: Kunshan Hiegise Precision Tools Co ltd
Current assignee: Kunshan Hiegise Precision Tools Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-01-26

Abstract

The invention discloses a thread chaser for cutting double-line pipe threads, which comprises a thread chaser body, wherein the thread chaser body is a rectangular square block, the center of the wider two sides of the thread chasing tool body is provided with a mounting and fixing groove, the center of the mounting and fixing groove is provided with a through hole, magnetic rings are arranged at two ends of the outer side of the through hole, one side of the upper end of the thread chasing tool body is fixedly connected with a first tool bit, a cutter head seam is arranged on one side of the first cutter head, a second cutter head is arranged on one side of the cutter head seam, which is far away from the first cutter head, a third cutter head is arranged on one side of the second cutter head away from the first cutter head, a fourth cutter head is arranged on one side of the third cutter head away from the second cutter head, this double-line pipe thread cutting is with screw chasing tool through the tool bit that sets up different height and width, makes it more accurate when can reaching the cutting of double-line threaded pipe, promotes machining efficiency's purpose.

Description

Thread chasing tool for cutting double-line pipe thread

Technical Field

The invention relates to the technical field of petroleum pipelines, in particular to a thread chasing tool for cutting threads of a double-thread pipe.

Background

In the oil and gas drilling and production industry, as an oil well pipe of an oil and gas well main body structure and related accessories, a pipe column formed by connecting a plurality of single pipes by using threads is formed. The processing quality of the threaded joint serving as the weakest link of the tubular column directly concerns the construction and service safety of an oil and gas well, and even if one threaded joint goes wrong, immeasurable great loss can be caused. In the prior art, single-tooth or multi-tooth thread chasers are used for forming and cutting single-thread threads of oil well pipes so as to ensure the processing efficiency and the processing precision. The existing thread chaser is characterized in that only one formed cutting tooth or finish turning tooth which is completely matched with the tooth form of the thread to be processed exists, and the rest of the multi-tooth chasers except one formed cutting tooth are rough turning cutting teeth. In the thread machining process, the rough turning cutting teeth are responsible for material cutting and leave certain machining allowance for fine turning, and the forming cutting teeth are responsible for final accurate cutting of thread shapes. Therefore, a thread chaser for cutting the threads of the double-line pipes is very needed in production, but the existing thread chasers have some defects.

The prior art has the following defects or problems:

1. when the existing thread chaser is used, although the thread of a double-thread pipe can be machined in principle by adopting a multi-thread branching machining method, because two spiral threads of the threads are cut twice in a sub-process, not only is the machining efficiency low, but also the machining precision of the threads cannot be effectively ensured, and particularly, the connection area between the two threads of the threads is difficult to be smoothly transited, and the surface of the threads has obvious quality defects such as scratches or shoulders and the like, so that the existing thread chaser is not practical;

2. when current thread chaser is used, because the processing of the complete profile of tooth of final completion screw thread of pipe thread generally need through many times of repeated cutting, when processing double-thread screw with current multiple tooth chaser, because two cutting teeth that the thread chaser is adjacent can participate in the cutting of different helices, this can cause the cutting process of carrying on next helix again through the branch line after the cutting process of first feed ends, and the thread alveolus that the last cutting process chaser finish turning tooth was cut can be entered into to the adjacent rough turning tooth of thread chaser finish turning tooth. Therefore, the phenomenon that rough turning teeth are not cut by materials is caused, the disorder of thread machining cutting allowance distribution and the large fluctuation of cutting load are caused, and the dimensional accuracy and the surface quality of thread machining are ensured irrespectively.

Disclosure of Invention

The invention aims to provide a thread chasing tool for cutting double-thread pipe threads, aiming at the defects of the prior art, so that the thread chasing tool for cutting double-thread pipe threads can solve the problems that the existing thread chasing tool cannot accurately cut a double-thread pipe, the machining efficiency is low, and the precision is inaccurate as the cutter teeth repeatedly cut into one thread.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a double-line pipe thread cutting is with screw thread chasing tool, includes screw thread chasing tool body, screw thread chasing tool body is the rectangle square, the both sides central point of screw thread chasing tool body broad puts and is equipped with the installation fixed recess, installation fixed recess central point puts and is equipped with the through-hole, through-hole outside both ends are equipped with the magnetic ring, No. one tool bit of screw thread chasing tool body upper end one side fixedly connected with, No. one tool bit one side is equipped with the tool bit seam, one side that No. one tool bit was kept away from to the tool bit seam is equipped with No. two tool bits, one side that No. one tool bit was kept away from to No. two tool bits is equipped with No. three tool bits.

According to the preferable technical scheme, one side, close to the second cutter head, of the first cutter head is provided with a cutter head seam, two sides of the second cutter head are provided with cutter head seams, two sides of the third cutter head are provided with cutter head seams, and one side, close to the third cutter head, of the fourth cutter head is provided with a cutter head seam.

As a preferred technical scheme, the first cutter head, the second cutter head, the third cutter head and the fourth cutter head are fixedly connected to the upper end of the thread chasing tool body.

As a preferable technical scheme of the invention, the number of the installation fixing grooves is two, and the through hole penetrates through the center position of the installation fixing groove.

In a preferred embodiment of the present invention, the number of the magnetic rings is two.

As a preferred technical scheme, arc bends are arranged on two sides of the upper ends of the first cutter head, the second cutter head, the third cutter head and the fourth cutter head.

As a preferred technical scheme of the invention, arc bends are arranged at four corners of the thread chasing tool body.

As the preferable technical scheme of the invention, arc bends are arranged at two ends of the cutter head seam.

As a preferred technical scheme, the height of the fourth cutter head is higher than that of the third cutter head and that of the second cutter head is higher than that of the first cutter head.

In a preferred embodiment of the present invention, the width of the fourth cutting tip is wider than the width of the third cutting tip is wider than the width of the first cutting tip.

Compared with the prior art, the invention provides a thread chaser for cutting double-line pipe threads, which has the following beneficial effects:

1. according to the thread chasing tool for cutting the double-line pipe threads, the tool bits with different heights and widths are arranged, so that the thread chasing tool for cutting the double-line pipe threads can sequentially go forward to the large tool bit through the small tool bit when in use, and can cut layer by layer, the double-line pipe threads passing through the tool bits can be cut in place at one time, the accuracy is higher, the production efficiency is improved, and the thread chasing tool is more practical;

2. this double-line pipe thread is thread chasing tool for cutting through setting up installation fixed slot and magnetic ring for this double-line pipe thread is thread chasing tool for cutting can be fixed the thread chasing tool body on equipment through installation fixed slot when using, and it is more convenient to make the installation pole get into the through-hole through the magnetic ring, the difficult condition of aiming at can not appear, and the installation is more handy, and is very convenient.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic elevational view of the present invention;

FIG. 3 is a schematic side perspective view of the present invention;

FIG. 4 is a schematic top view of the present invention.

In the figure: 1. a thread chasing tool body; 2. installing a fixed groove; 3. a through hole; 4. a magnetic ring; 5. a first cutter head; 6. a second cutter head; 7. a tool bit III; 8. a tool bit II; 9. turning the arc; 10. the cutter head is sewed.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: the utility model provides a double-line pipe thread is thread chasing tool for cutting, including thread chasing tool body 1, thread chasing tool body 1 is the rectangle square, the both sides central point of 1 broad of thread chasing tool body puts and is equipped with installation fixed recess 2, installation fixed recess 2 central point puts and is equipped with through-

hole

3, 3 outside both ends of through-hole are equipped with

magnetic ring

4, 1 upper end one side fixedly connected with tool bit 5 of thread chasing tool body, 5 one side of a tool bit is equipped with

tool bit seam

10, 10 one sides of keeping away from a tool bit 5 of tool bit are equipped with No. two tool bits 6 of tool bit seam, one side that No. 5 of tool bit was kept away from to No. two tool bits 6 is equipped with No. three tool bit 7, one side that No. two.

In the embodiment, a cutter head seam 10 is arranged on one side of the first cutter head 5 close to the second cutter head 6, cutter head seams 10 are arranged on two sides of the third cutter head 7, a cutter head seam 10 is arranged on one side of the fourth cutter head 8 close to the third cutter head 7, threads can be left on a double-thread threaded pipe by the cutter head seam 10, the first cutter head 5, the second cutter head 6, the third cutter head 7 and the fourth cutter head 8 are fixedly connected to the upper end of the thread chasing tool body 1 and are integrated with the thread chasing tool body 1, two mounting and fixing grooves 2 are formed, the through hole 3 penetrates through the central position of the mounting and fixing groove 2, the two bidirectional fixing thread chasing tool body 1 is used for more stable cutting, two magnetic rings 4 are formed, the insertion of the through hole 3 is more convenient during mounting, two arc bends 9 are arranged on two sides of the upper ends of the first cutter head 5, the second, make the double-line screwed pipe finished product more slick and sly, 1 four corners position of screw chasing tool body all is equipped with circular arc turn 9, can not cut the hand when making 1 installation of screw chasing tool body, tool bit seam 10 both ends all are equipped with circular arc turn 9, make the double-line screwed pipe finished product more slick and sly, No. four tool bits 8 highly are higher than No. three tool bits 7 highly are higher than No. two tool bits 6 highly are higher than No. one tool bit 5 highly, No. four tool bits 8 width in No. three tool bits 7 width in No. two tool bits 6 width in No. one tool bit 5 width, make the double-line screwed pipe pass through No. four tool bits 8 in proper order, No. three tool bits 7, No. two tool bits 6 and No. one tool bit 5, the.

The working principle and the using process of the invention are as follows: firstly, the thread chasing tool for cutting the double-line pipe thread is arranged on double-line thread pipe cutting equipment, a power supply is switched on, the double-line thread pipe sequentially passes through a fourth tool bit 8, a third tool bit 7, a second tool bit 6 and a first tool bit 5, the cutting is more precise, and the one-time cutting is in place, the thread chasing tool for cutting the double-line pipe thread is arranged, through the tool bits with different heights and widths, the thread chasing tool for cutting the double-line pipe thread can sequentially advance to a large tool bit through the small tool bit when in use, the layer-by-layer cutting is realized, the double-line pipe thread passing through the tool bits can be cut in place at one time, the precision is higher, the production efficiency is improved, the thread chasing tool for cutting the double-line pipe thread is more practical, through the arrangement of the installation fixing groove 2 and the magnetic ring 4, the thread chasing tool body 1 can be fixed on the equipment when in use, the installation rod can enter the through hole 3 more conveniently through the magnetic ring 4, the situation of difficult alignment can not appear, and the installation is more convenient and very convenient.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double-line pipe thread is thread chasing tool for cutting which characterized in that: including screw thread chasing tool body (1), screw thread chasing tool body (1) is the rectangle square, the both sides central point of screw thread chasing tool body (1) broad puts and is equipped with installation fixed recess (2), installation fixed recess (2) central point puts and is equipped with through-hole (3), through-hole (3) outside both ends are equipped with magnetic ring (4), No. one tool bit (5) of screw thread chasing tool body (1) upper end one side fixedly connected with, No. one tool bit (5) one side is equipped with tool bit seam (10), one side that No. one tool bit (5) were kept away from in tool bit seam (10) is equipped with No. two tool bits (6), one side that No. one tool bit (5) was kept away from in No. two tool bits (6) is equipped with No. three tool bit (7), one side that No. two tool bits (6) were kept away from in No. three.

2. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: no. one side that No. one tool bit (5) is close to No. two tool bits (6) is equipped with tool bit seam (10), No. two tool bit (6) both sides all are equipped with tool bit seam (10), No. three tool bit (7) both sides all are equipped with tool bit seam (10), No. four one side that tool bit (8) are close to No. three tool bit (7) is equipped with tool bit seam (10).

3. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: no. one tool bit (5), No. two tool bits (6), No. three tool bit (7) and No. four tool bits (8) equal fixed connection in screw chaser body (1) upper end.

4. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: the number of the mounting and fixing grooves (2) is two, and the through hole (3) penetrates through the center of the mounting and fixing groove (2).

5. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: the magnetic rings (4) are two in total.

6. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: the two sides of the upper ends of the first cutter head (5), the second cutter head (6), the third cutter head (7) and the fourth cutter head (8) are respectively provided with an arc turning (9).

7. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: arc bends (9) are arranged at the four corners of the thread chasing tool body (1).

8. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: arc bends (9) are arranged at two ends of the cutter head seam (10).

9. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: no. four tool bits (8) highly be higher than No. three tool bit (7) highly be higher than No. two tool bit (6) highly be higher than tool bit (5) highly.

10. A chaser for cutting a thread of a double-threaded pipe according to claim 1, wherein: the width of the fourth cutter head (8) is wider than that of the third cutter head (7) and is wider than that of the second cutter head (6) and is wider than that of the first cutter head (5).