CN110814444B

CN110814444B - Method for machining threads on inner side wall of circular pipe

Info

Publication number: CN110814444B
Application number: CN201911217183.1A
Authority: CN
Inventors: 石三平
Original assignee: Wenzhou Guojun Machinery Co ltd
Current assignee: Guangdong Sanmeng Transmission Equipment Technology Co ltd
Priority date: 2018-09-12
Filing date: 2018-09-12
Publication date: 2020-11-20
Anticipated expiration: 2038-09-12
Also published as: CN110814444A; CN109226911B; CN109226911A

Abstract

The invention relates to the technical field of circular pipe machining, and discloses a method for machining threads on the inner side wall of a circular pipe. The thread turning device can automatically complete the clamping and turning operation of the round pipe when in use, and can adjust the processing distance of the thread turning tool through the main lifting device so as to process the threaded pipe.

Description

Method for machining threads on inner side wall of circular pipe

Technical Field

The application is a divisional application of a Chinese patent application with the application number of 201811060128.1, which is filed on 12.9.2018 and the name of which is a thread cutting device on the inner side wall of a circular pipe.

Background

The circular pipe is a common structural component, and is used for structural connection or used as a conveying pipeline and a protective pipeline, and is mainly connected with other pipe fittings or rod pieces by sleeving, welding and threaded connection, wherein the threaded connection is widely used because no additional connecting process or connecting components are required. The existing internal thread of the round pipe is mainly operated by installing a threading tool on a lathe to perform threading operation, and the round pipe needs to be manually clamped by a three-jaw chuck in the process, so that manual labor is needed, the traditional lathe is provided with only one clamping fixture, and the thread turning efficiency of the round pipe is seriously influenced due to the low efficiency of the clamping process, so that the production benefit is influenced.

The invention provides a novel threading device for the inner side wall of a circular pipe, which can directly adopt a machine to automatically clamp and can realize the alternative machining operation of a plurality of clamps by station switching, and can effectively solve the problems.

Disclosure of Invention

The invention aims to provide a thread cutting device for the inner side wall of a circular pipe, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a thread turning device for the inner side wall of a circular tube comprises a workbench, wherein a stand column is fixedly mounted on the workbench, a main lifting device is fixedly mounted at the upper end of the stand column, the driving end of the main lifting device is fixedly provided with a mounting frame in a driving manner, a threading tool driving motor is fixedly mounted on the mounting frame, the output end of the threading tool driving motor is fixedly provided with a fixing rod in a driving manner, the tail end of the fixing rod is fixedly provided with a threading tool through bolts, the workbench is integrally provided with a positioning seat at the position below the corresponding threading tool, the left end and the right end of the workbench are both fixedly provided with a main motor, the tail end of the main motor is fixedly provided with a flange plate in a driving manner, an auxiliary lifting device is fixedly mounted above the flange plate through bolts, the driving end of the auxiliary lifting device is fixedly provided with a connecting rod, and, and the output end of upset motor is fixed and the drive has the dwang, the end of dwang is fixed with anchor clamps, and anchor clamps include the cooperation board that corresponds with the positioning seat, the top integrated into one piece of cooperation board has the position sleeve that is used for holding the circular tube of waiting to process, and the below integrated into one piece of cooperation board has the uide bushing that inserts the positioning seat, peg graft in the position sleeve and install the clamp splice, and fixed mounting has the tight push rod of clamp that is used for driving the clamp splice on the cooperation board, conveyer that corresponds with the anchor clamps position has all been placed at both ends around the workstation, conveyer includes the support frame, and fixed mounting has toothed belt driving motor on the support frame, and toothed belt driving motor's output drive has the toothed belt, the equidistance array has the fixing base on the toothed belt, install through the bolt on the fixing base and be used for placing the.

Preferably, the workbench is provided with a waste collection box for recovering waste at the lower end of the corresponding positioning seat.

Preferably, an inner bushing is inserted into the positioning sleeve and fixedly connected with the matching plate through a bolt, and a through groove matched with the clamping block is formed in the inner bushing.

Preferably, the four corners of the matching plate are fixedly provided with limiting devices, the limiting devices are ball screw type electric push rods, and the positioning seat is provided with positioning holes matched with the tail ends of the limiting devices.

Preferably, the clamping push rod, the main lifting device and the auxiliary lifting device are single-rod double-acting hydraulic push rods.

Compared with the prior art, the invention has the beneficial effects that: the thread turning device designed by the invention can automatically complete the clamping and turning operation of the round pipe when in use, and can adjust the processing distance of the thread turning tool through the main lifting device so as to process the threaded pipe.

Drawings

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

FIG. 2 is a cross-sectional view of the table of the present invention;

FIG. 3 is a schematic structural diagram of a transfer device according to the present invention;

FIG. 4 is a schematic view of the installation of the clip of the present invention.

In the figure: 1 workbench, 2 conveying devices, 201 supporting frames, 202 fixing seats, 203 toothed belt driving motors, 204 containing boxes, 205 toothed belts, 3 flange plates, 4 main motors, 5 upright posts, 6 main lifting devices, 7 mounting frames, 8 clamps, 801 matching plates, 802 guide sleeves, 803 positioning sleeves, 804 clamping blocks, 805 clamping push rods, 9 rotating rods, 10 overturning motors, 11 auxiliary lifting devices, 12 connecting rods, 13 inner linings, 14 limiting devices, 15 waste collecting boxes, 16 positioning seats, 17 threading tools, 18 fixing rods and 19 threading tool driving motors.

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 obtained by those skilled in the art without creative efforts based on the technical solutions of the present invention belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a thread turning device for the inner side wall of a circular tube comprises a workbench 1, wherein a stand column 5 is fixedly installed on the workbench 1, a main lifting device 6 is fixedly installed at the upper end of the stand column 5, the driving tail end of the main lifting device 6 is fixedly and drivingly provided with an installation frame 7, a threading tool driving motor 19 is fixedly installed on the installation frame 7, the output tail end of the threading tool driving motor 19 is fixedly and drivingly provided with a fixed rod 18, the tail end of the fixed rod 18 is fixedly provided with a threading tool 17 through a bolt, the workbench 1 is integrally provided with a positioning seat 16 at the lower part corresponding to the threading tool 17, the left end and the right end of the workbench 1 are both fixedly provided with a main motor 4, the tail end of the main motor 4 is fixedly and drivingly provided with a flange 3, an auxiliary lifting device 11 is fixedly installed above the flange 3 through a bolt, and the driving tail end of, the tail end of the connecting rod 12 is fixedly provided with a turnover motor 10, the output end of the turnover motor 10 is fixed and driven with a rotating rod 9, the tail end of the rotating rod 9 is fixed with a clamp 8, the clamp 8 comprises a matching plate 801 corresponding to the positioning seat 16, a positioning sleeve 803 for containing a round pipe to be processed is integrally formed above the matching plate 801, a guide sleeve 802 inserted into the positioning seat 16 is integrally formed below the matching plate 801, a clamping block 804 is inserted and installed in the positioning sleeve 803, a clamping push rod 805 for driving the clamping block 804 is fixedly installed on the matching plate 801, the front end and the rear end of the workbench 1 are both provided with a conveying device 2 corresponding to the position of the clamp 8, the conveying device 2 comprises a supporting frame 201, a toothed belt driving motor 203 is fixedly installed on the supporting frame 201, the output end of the toothed belt driving motor 203 is driven with a toothed belt 205, the toothed belt 205 is provided with a fixed seat 202 in, the fixing seat 202 is provided with a containing box 204 for placing the round pipe to be processed through bolts.

Further, the work table 1 is mounted with a scrap collecting box 15 for recovering scrap at the lower end of the corresponding positioning seat 16.

Furthermore, an inner bushing 13 is inserted into the positioning sleeve 803, the inner bushing 13 is fixedly connected with the matching plate 801 through a bolt, and a through groove matched with the clamping block 804 is formed in the inner bushing 13.

Furthermore, the four corners of the matching plate 801 are fixedly provided with a limiting device 14, the limiting device 14 is a ball screw type electric push rod, and the positioning seat 16 is provided with a positioning hole matched with the tail end of the limiting device 14.

Further, the clamping push rod 805, the main lifting device 6 and the auxiliary lifting device 11 are all single-rod double-acting hydraulic push rods.

The working principle is as follows: when the device works, firstly, a round pipe to be processed is placed on the conveying device 2 positioned at the front end of the workbench 1, then the main motor 4 starts to drive the connecting rod 12 to rotate to a specified loading position, at the moment, the overturning motor 10 drives the clamp 8 to overturn 180 degrees, so that the positioning sleeve 803 corresponds to the round pipe to be processed, then the auxiliary lifting device 11 drives the positioning sleeve 803 to move downwards and is sleeved on the round pipe to be processed, meanwhile, the inner bushing 13 can be pre-installed in the positioning sleeve 803 so as to be better used for fixing a workpiece to be processed, then the clamping push rod 805 drives the clamping block 804 to fix the round pipe to be processed in the positioning sleeve 803, at the moment, the auxiliary lifting device 11 lifts and overturns the clamp by 180 degrees again by the motor 10, the main motor 4 rotates the clamp to be above the positioning seat 16, and simultaneously, the auxiliary device 11 drives the guide sleeve 802 on the clamp 8 to be inserted into the, and the limiting device 14 is also inserted and fixed with the positioning hole on the positioning seat 16, so as to fix the clamp 8. After the corresponding threading tool 17 is replaced by the fixing rod 18, the feeding speed of the threading tool 17 is controlled through the main lifting device 6, and the threading tool 17 is driven to rotate through the threading tool driving motor 19, so that the thread is turned inside the circular pipe, and waste materials generated in the thread turning process enter the waste material collecting box 15 to be collected. After the machining is finished, the main motor 4 drives the clamps to move to the conveying device 2 at the rear end of the workbench 1, so that the machined workpieces are placed into the containing box 204 after being turned over for being collected by workers, meanwhile, the other workpiece to be machined is placed into the positioning seat 16 for machining on the clamp 8 at the other side, two or more groups of clamps 8 can effectively reduce the time wasted by replacing the workpieces in the machining process, the thread turning efficiency is improved, and the precision when the clamps 8 grab the round pipes to be machined or place the machined round pipes can be effectively guaranteed because the containing box 204 is used for placing a single workpiece on the conveying device 2, and the moving position of the conveying device 2 can be accurately driven by the toothed belt driving motor 203, so that the clamping and taking processes of the device do not need manual intervention at all, only need adopt manual work or machinery will wait to process the circular pipe and put into holding box 204 or will process the circular pipe that the good circular pipe takes out and hold box 204 can. The device can accomplish the clamping and the upset operation of circular pipe automatically when using to can be through the working distance of main elevating gear 6 adjustment threading tool 17, thereby process the screwed pipe, owing to do not need the manual work to carry out the clamping and can carry out the location and the clamping operation of work piece through two at least anchor clamps in turn in the course of working, consequently can be enlarged shorten the shared time of clamping in the course of working and reduce the consumption to the labour, thereby the efficiency of production has been improved, has very high practical value.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The method is realized based on a lathe thread device, the lathe thread device comprises a workbench (1) and is characterized in that a stand column (5) is fixedly mounted on the workbench (1), a main lifting device (6) is fixedly mounted at the upper end of the stand column (5), a mounting frame (7) is fixedly arranged at the driving end of the main lifting device (6) and drives the driving end, a threading tool driving motor (19) is fixedly mounted on the mounting frame (7), a fixing rod (18) is fixedly arranged at the output end of the threading tool driving motor (19) and drives the output end of the fixing rod, a threading tool (17) is fixedly mounted at the tail end of the fixing rod (18) through a bolt, a positioning seat (16) is integrally formed at the lower part of the corresponding threading tool (17) of the workbench (1), and a main motor (4) is fixedly mounted at the left end and the right end of the workbench (1), and the end of main motor (4) is fixed and the drive has ring flange (3), there is supplementary elevating gear (11) top of ring flange (3) through bolt fixed mounting, and the terminal fixed mounting of the drive of supplementary elevating gear (11) has connecting rod (12), the terminal fixed mounting of connecting rod (12) has upset motor (10), and the output of upset motor (10) is fixed and the drive has dwang (9), the end of dwang (9) is fixed with anchor clamps (8), and anchor clamps (8) include cooperation board (801) that correspond with positioning seat (16), the top integrated into one piece of cooperation board (801) has position sleeve (803) that is used for holding the round pipe of treating processing, and the below integrated into one piece of cooperation board (801) has uide bushing (802) that insert positioning seat (16), insert in position sleeve (803) and connect and install clamp splice (804), a clamping push rod (805) for driving a clamping block (804) is fixedly installed on the matching plate (801), conveying devices (2) corresponding to the positions of the clamps (8) are respectively placed at the front end and the rear end of the workbench (1), each conveying device (2) comprises a supporting frame (201), a toothed belt driving motor (203) is fixedly installed on each supporting frame (201), a toothed belt (205) is driven by the output end of each toothed belt driving motor (203), fixing seats (202) are arranged on the toothed belts (205) in an equidistant array, and containing boxes (204) for containing round pipes to be processed are installed on the fixing seats (202) through bolts;

the processing method comprises the following steps:

firstly, a round pipe to be processed is placed on a conveying device (2) arranged at the front end of a workbench (1), then a main motor (4) starts to drive a connecting rod (12) to rotate to a specified loading position, at the moment, a clamp (8) is driven to turn over by 180 degrees by a turning motor (10), so that a positioning sleeve (803) corresponds to the round pipe to be processed, then an auxiliary lifting device (11) drives the positioning sleeve (803) to move downwards and is sleeved on the round pipe to be processed, meanwhile, an inner bushing (13) can be pre-installed in the positioning sleeve (803) so as to be better used for fixing a workpiece to be processed, then a clamping push rod (805) drives a clamp block (804) to fix the round pipe to be processed in the positioning sleeve (803), at the moment, the auxiliary lifting device (11) lifts and the turning motor (10) turns the clamp again by 180 degrees, the main motor (4) rotates the clamp to the position above a positioning seat (16), meanwhile, the auxiliary device (11) drives the guide sleeve (802) on the clamp (8) to be inserted into the positioning seat (16), and the limiting device (14) is also inserted and fixed with the positioning hole on the positioning seat (16), so that the clamp (8) is fixed;

after a corresponding threading tool (17) is replaced by the fixing rod (18), the feeding speed of the threading tool (17) is controlled through the main lifting device (6), the threading tool (17) is driven to rotate through the threading tool driving motor (19), so that threads are turned on the inner part of the circular pipe, and waste materials generated in the threading process enter the waste material collecting box (15) to be collected;

after the machining is finished, the main motor (4) drives the clamp to move to the conveying device (2) positioned at the rear end of the workbench (1), so that the machined workpiece is overturned and placed into the containing box (204) to wait for a worker to collect, meanwhile, the other workpiece to be machined is placed into the positioning seat (16) to be machined on the clamp (8) positioned at the other side, the time wasted in replacing the workpiece in the machining process can be effectively reduced by adopting two or more groups of clamps (8), the thread turning efficiency is improved, and the moving position of the conveying device (2) can be accurately driven by the tooth belt driving motor (203) because the containing box (204) is adopted to place a single workpiece, so that the accuracy of the clamp (8) in grabbing a circular pipe to be machined or placing the machined circular pipe can be effectively guaranteed, therefore, the clamping and taking processes of the device do not need manual intervention, and only the circular pipe to be processed is placed into the containing box (204) or the processed circular pipe is taken out of the containing box (204) manually or mechanically.

2. The threading method of the inner side wall of a circular tube according to claim 1, characterized in that said work table (1) is equipped with a scrap collecting box (15) for recovering scrap at the lower end of the corresponding positioning seat (16).

3. The method for machining the threads on the inner side wall of the circular pipe as claimed in claim 1, wherein an inner bushing (13) is inserted into the positioning sleeve (803), the inner bushing (13) is fixedly connected with a matching plate (801) through a bolt, and a through groove matched with the clamping block (804) is formed in the inner bushing (13).

4. The method for machining the threads on the inner side wall of the circular pipe as claimed in claim 1, wherein limiting devices (14) are fixedly mounted at four corners of the matching plate (801), the limiting devices (14) are ball screw type electric push rods, and positioning holes matched with the tail ends of the limiting devices (14) are formed in the positioning seats (16).

5. The method for threading the inner side wall of the circular pipe as claimed in claim 1, wherein the clamping push rod (805), the main lifting device (6) and the auxiliary lifting device (11) are all single-rod double-acting hydraulic push rods.