CN-120480317-B - Turning device and method for thin-walled pipe fitting with external threads

CN120480317BCN 120480317 BCN120480317 BCN 120480317BCN-120480317-B

Abstract

The invention provides a turning device and a turning method for an external thread thin-wall pipe fitting, which belong to the technical field of intelligent manufacturing equipment industry and comprise a machining lathe; the pipe fitting guide assembly comprises a machining base, a cutting machining sleeve, an ejector pin base and an ejector pin rod, wherein the machining base is slidably connected to the upper end of a machining lathe, the cutting machining sleeve is fixedly connected to the upper end of the machining base, the ejector pin base is fixedly connected to the upper end of the machining lathe, the cutting machining sleeve is fixedly connected to the ejector pin base, the cutting temperature can be effectively reduced, cutter abrasion is reduced, machining precision and surface quality are improved, and secondary cutting and equipment blockage caused by chip accumulation can be prevented.

Inventors

CHEN ZHIJIAN
ZHANG JIAN
LI LIAOYUAN
Ouyang Lingjiang
LIU RUIYI

Assignees

湖南工业职业技术学院
长沙钛合电子设备有限公司

Dates

Publication Date: 20260508
Application Date: 20250619

Claims (8)

1. The turning device for the thin-walled pipe fitting with the external threads is used for machining a thin-walled pipe (32) to be machined and comprises a machining lathe (1), and is characterized by further comprising a pipe fitting guiding component, a cooling component, a circulating component and a separating component; The pipe fitting guiding assembly comprises a cutting sleeve (21), a thimble base (31) and a thimble rod (2), wherein the cutting sleeve (21) is arranged on a processing lathe (1), the thimble base (31) is fixedly connected to the upper end of the processing lathe (1), the thimble rod (2) is fixedly connected to the thimble base (31), a thin-wall pipe (32) to be processed is arranged in the cutting sleeve (21), one side end of the thin-wall pipe (32) to be processed is in contact with the thimble rod (2), and a cutting blade is arranged at the upper end of the cutting sleeve (21); A machining driving motor (7) is arranged on a machining lathe arranged at the other side end of the thin-wall pipe (32) to be machined, the output end of the machining driving motor (7) is fixedly connected with a drainage rotating pipe (9), the output end of the drainage rotating pipe (9) is fixedly connected with an outward-expansion fixing pipe (8), an outward-expansion assembly is arranged in the outward-expansion fixing pipe (8), and the outward-expansion assembly expands outwards along the radial direction of the thin-wall pipe (32) to be machined so as to clamp the thin-wall pipe (32) to be machined in the radial direction; the cooling component is arranged on the thimble rod (2) and sprays cooling liquid obliquely; The separating assembly is arranged at the upper end of the processing lathe (1) and is used for being connected with the cooling assembly to separate waste materials from cooling liquid, and the cooling liquid is connected with the thimble rod (2) through the circulating assembly to recover the cooling liquid; The cooling assembly comprises a spray pipe sleeve (3), an inclined spray pipe (4) and a circulation hole (5), wherein the spray pipe sleeve (3) is fixedly connected to the circumferential surface of the ejector pin rod (2), the circulation hole (5) is formed in the ejector pin rod (2), the inclined spray pipe (4) is formed in the spray pipe sleeve (3), and an opening of the inclined spray pipe (4) is inclined; The upper end of the processing lathe (1) is connected with a processing driving base (6) in a sliding manner, and a processing driving motor (7) is fixedly connected in the processing driving base (6); One side end of the processing driving base (6) is fixedly connected with a drainage sleeve (10), a drainage inclined tube (11) is arranged on the lower inner wall of the drainage sleeve (10) and in the processing driving base (6), and the other end of the drainage inclined tube (11) is communicated with a separation assembly; the separation assembly comprises a centrifugal motor (12), a solid-liquid separation barrel (14) and a liquid drainage barrel (15), wherein the centrifugal motor (12) is fixedly connected to one side end of a drainage inclined tube (11), a threaded sleeve (13) is connected with the output end of the centrifugal motor (12), the liquid drainage barrel (15) is fixedly connected to the outer surface of the threaded sleeve (13), and the circulation assembly comprises a collecting box (16).
2. The turning device for the thin-walled pipe fitting with external threads according to claim 1, wherein the external expansion assembly comprises a threaded insertion groove (22), an external expansion groove (23), an external expansion fixing plate (24), a return spring (25) and an external expansion threaded rod (26), the threaded insertion groove (22) is formed in the external expansion fixing pipe (8), the external expansion groove (23) is formed in the circumferential inner wall of the threaded insertion groove (22), the external expansion fixing plate (24) is slidably connected in the external expansion groove (23), the return spring (25) is fixedly connected to the side inner wall of the external expansion groove (23) and the side end of the external expansion fixing plate (24), and the external expansion threaded rod (26) is slidably connected in the threaded insertion groove (22) and is in contact with an inclined surface formed in one side of the external expansion fixing plate (24).
3. The turning device for the externally threaded thin-walled pipe fitting according to claim 2, wherein a rotating motor (28) is fixedly connected in the drainage rotating pipe (9), the output end of the rotating motor (28) is fixedly connected with a rotating rod (29), one side end of the externally-expanded threaded rod (26) is provided with a driving rotating groove (27), and the rotating rod (29) slides in the driving rotating groove (27).
4. The turning device for the externally threaded thin-walled pipe fitting according to claim 3, wherein the outer surface of the drainage rotating pipe (9) is provided with a drainage spiral plate (30), and one side end of the drainage sleeve (10) is arranged in the cutting sleeve (21).
5. The turning device for the thin-walled pipe fitting with external threads according to claim 1, wherein the output end of the centrifugal motor (12) is fixedly connected with a threaded sleeve (13), and the solid-liquid separation cylinder (14) is in threaded connection with the threaded sleeve (13).
6. The turning device for the thin-walled pipe fitting with external threads according to claim 5, wherein the circulating assembly further comprises a circulating water pump (17), a circulating pipe (18) and a cooling liquid injection cylinder (19), the collecting tank (16) is connected to the upper end of the machining lathe (1) in a sliding mode, the circulating water pump (17) is fixedly connected to one side end of the collecting tank (16), the cooling liquid injection cylinder (19) is sleeved on the outer surface of the thimble rod (2) and is communicated with the inclined spray pipe (4), and one side end of the cooling liquid injection cylinder (19) and the output end of the circulating water pump (17) are fixedly connected with the circulating pipe (18).
7. The turning device for the thin-walled pipe fitting with external threads according to claim 6, wherein one side end of the machining lathe (1) is slidably connected with a cutting blade through motor driving.
8. The method for turning a thin-walled pipe fitting with external threads according to claim 1, wherein the method comprises the following steps: s1, firstly, sleeving a thin-wall pipe (32) to be processed outside an external expansion fixing pipe (8), then, moving a processing driving base (6) to fix the thin-wall pipe (32) to be processed with a thimble rod (2), and simultaneously, automatically expanding an external expansion assembly under driving, thereby realizing auxiliary clamping of the thin-wall pipe; S2, after clamping is completed, a machining driving motor (7) is started, the output end of the motor drives a diversion pipe (9) and an external expansion fixing pipe (8) to synchronously rotate, external thread cutting is carried out through a cutting blade, and meanwhile, cooling liquid flows into a spray pipe sleeve (3) from a circulation hole (5) in the thimble rod (2) and is precisely sprayed to a cutting area through an angle of 45 degrees of an inclined spray pipe (4); S3, metal scraps generated in the cutting process and used cooling liquid mixture can fall into the drainage sleeve (10) along the cutting sleeve (21) and are conveyed to the separation assembly through the drainage inclined tube (11), the cooling liquid and the metal scraps are efficiently separated by utilizing centrifugal force, the scraps are collected to the waste bin, the cooling liquid flows into the liquid drainage tube and finally flows back to the collection bin (16), and the cooling liquid is supplied to the cooling assembly again for recycling through the circulation assembly, so that a closed loop system is formed.

Description

Turning device and method for thin-walled pipe fitting with external threads Technical Field The invention belongs to the technical field of machining of threaded pipes, and particularly relates to a turning device and a turning method for a thin-wall pipe with external threads. Background In the prior art, in the industry of intelligent manufacturing equipment, thread machining is a process for machining a workpiece by using a tool for manufacturing threads and adopting processes such as cutting, turning, milling, grinding and the like, generally refers to a method for machining threads on the workpiece by using a forming tool or grinding tool, and mainly comprises turning, milling, tapping, threading, grinding, whirlwind cutting and the like. According to the searching discovery, in the Chinese patent with the authority bulletin number of CN108500404B, a thread processing machine is disclosed, the thread processing machine consists of a tapping host machine and a feeding machine, the feeding machine is connected with the tapping host machine through a slideway mechanism, the novel thread processing machine is low in price, the whole machine consists of a plurality of mechanisms, the novel thread processing machine not only has a conveying processing function, but also can integrate and sort workpieces in the feeding machine, the workpiece is conveyed in a orderly manner, the feeding speed is high, the working efficiency is increased, the working noise is low, the tapping host machine can clean the surface of a product at the same time, the product quality is detected, the operation is simple, the worker requirement is low, the manpower resource cost is reduced, the workpiece is easy to switch during working, when faults or maintenance is needed, the problem can be detected quickly, the replacement mechanism is simple, the maintenance cost is greatly reduced, the traditional open processing is designed to be closed processing, the environment is prevented from being polluted during the processing, meanwhile, the processing oil is recovered and filtered, the environment is more friendly, and more durable. According to the technical scheme, the thread is formed through the tapping machine, oil stains are prevented from splashing during machining, the environment is polluted, machining oil is further recovered and filtered, the environment is protected, the thread forming machine is more durable, high temperature generated in the process of cutting a screw pipe cannot be timely emitted, cutter abrasion is possibly aggravated, machining precision and workpiece surface quality are affected, meanwhile, an active cleaning mechanism for cutting scraps is lacking, scraps are easily accumulated, equipment blockage and machining stability reduction are further caused, product quality and equipment service life are even affected, in the process of forming the thread, the requirement for fixing a workpiece to be machined is high reliably, particularly a thin-wall pipe fitting is high, and if the thread is not reliably fixed, the machined thread on a pipe wall is inaccurate or the pipe wall is easily broken. Disclosure of Invention The invention aims to provide a turning device and a turning method for an externally threaded thin-wall pipe fitting, and aims to solve the problems that high temperature generated in the cutting process of a screw tube cannot be timely emitted, tool abrasion is possibly aggravated, and machining precision and workpiece surface quality are affected in the intelligent manufacturing equipment industry in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: the turning device for the thin-walled pipe fitting with the external threads is used for machining the thin-walled pipe to be machined and comprises a machining lathe, a pipe fitting guiding component, a cooling component, a circulating component and a separating component; The pipe fitting guiding assembly comprises a cutting sleeve, a thimble base and a thimble rod, wherein the cutting sleeve is arranged on a machining lathe, the thimble base is fixedly connected to the upper end of the machining lathe, and the thimble rod is fixedly connected in the thimble base; A machining driving motor is arranged on a machining lathe arranged at the other side end of the thin-wall pipe to be machined, the output end of the machining driving motor is fixedly connected with a drainage rotating pipe, the output end of the drainage rotating pipe is fixedly connected with an outward expansion fixing pipe, an outward expansion assembly is arranged in the outward expansion fixing pipe, and the outward expansion assembly expands outwards along the radial direction of the thin-wall pipe to be machined so as to clamp the thin-wall pipe to be machined in the radial direction; the cooling component is arranged on the thimble rod and sprays cooling liquid obliquely; The separation assembly is arra