CN110788581A

CN110788581A - Manufacturing method of elbow

Info

Publication number: CN110788581A
Application number: CN201911258936.3A
Authority: CN
Inventors: 黄文博; 聂敏; 王梦蝶
Original assignee: Kunshan Kinglai Hygienic Materials Co Ltd
Current assignee: Kunshan Kinglai Hygienic Materials Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-02-14

Abstract

The invention discloses a method for manufacturing an elbow, which comprises the following steps: the method comprises the steps of placing a workpiece to be machined into a pipe cutting machine, adjusting the length of the pipe cutting machine according to the technological requirement of machining the workpiece after the workpiece is placed into the pipe cutting machine, machining, installing the cut and formed workpiece into the pipe bending machine, setting the pipe diameter and the size of an elbow of the pipe bending machine after the workpiece is machined according to the technological requirement of machining the product before the pipe bending machine is machined, and machining the workpiece after the setting is completed. In the manufacturing method of the elbow, automatic equipment is mostly adopted to process the elbow, so that the manual operation procedures are reduced, the defects of different roundness, large form and position tolerance, scratches on the pipe wall and the like in the current domestic elbow processing production are effectively overcome, the error is reduced, and the process requirement is improved.

Description

Manufacturing method of elbow

Technical Field

The invention relates to the technical field of metal processing, in particular to a manufacturing method of an elbow.

Background

The elbow is a commonly used connecting pipe fitting in water heating installation, is used for the connection of pipeline turning, is used for changing the direction of pipeline, and the mode of connecting with the pipe has: direct welding (the most common way) flange joint, hot melt connection, electric smelting connection, threaded connection, socket type connection and the like, and can be divided into the following steps according to the production process: the elbow has good comprehensive performance, so that it can be extensively used in the basic engineering of chemical engineering, building, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, water heating, fire-fighting, electric power, spaceflight and shipbuilding, etc..

The elbow manufacturing method has the advantages that a plurality of manufacturers for manufacturing elbows on the domestic market exist, but the elbows on the domestic market generally have the defects of large deviation of same roundness, uneven wall thickness, incapability of meeting the size requirement of form and position tolerance and the like, and the elbow manufacturing method has the advantages of multiple product processing procedures, multiple manual operation procedures, low qualification rate and unobvious economic benefit.

Disclosure of Invention

The present invention is directed to a method for manufacturing an elbow, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a manufacturing method of an elbow comprises the following steps:

the method comprises the following steps: placing a round pipe to be processed into the pipe cutting machine for cutting;

step two: installing the round pipe after cutting and forming in a pipe bending machine, and processing a workpiece after setting to form an elbow;

step three: fixing the elbow in an automatic shaping machine, and utilizing the shaping machine to adjust the cylindricity and form and location tolerance of the pipe diameter to qualified dimensions;

step four: after the workpiece is formed, machining the bent head after shaping by using a turning machining center, and turning the parts beyond the two ends of the bent head according to the technological requirements in the machining process of the workpiece;

step five: grinding and polishing the turned elbow product by using an elbow polishing machine;

step six: and (3) utilizing a laser engraving machine to laser engrave the information of the elbow size and the furnace number on the surface of the elbow.

Preferably, the elbow adopts a cast iron round pipe, and the machining angle is 90 degrees.

Preferably, according to the third step, the shaped elbow is loaded into a lathe, and the workpiece is machined by the lathe.

Preferably, in the first step, the angle formed between the circular tube and the cutting knife before the tube sawing machine cuts is adjusted according to the angle actually required to machine the workpiece.

Preferably, in the sixth step, after the laser engraving machine engraves the elbow, the elbow is sealed and packaged, and is put in storage.

Compared with the prior art, the invention has the beneficial effects that: the elbow manufacturing method mostly adopts automatic equipment to process the elbow, reduces manual operation, effectively solves the defects of different roundness, different wall thickness, large form and position tolerance, scratches on the pipe wall and the like in the prior domestic elbow processing production, reduces errors and improves the process requirements.

Drawings

Fig. 1 is a schematic flow chart of a manufacturing method of the elbow of the invention.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, an embodiment of the present invention: a manufacturing method of an elbow comprises the following steps:

the method comprises the following steps: and putting the round pipe to be processed into the pipe cutting machine for cutting. Clamping the machined workpiece by using a workpiece clamping structure carried on the pipe sawing machine, and adjusting the length machined by the pipe sawing machine according to the technological requirements for machining the workpiece after the workpiece clamping structure is placed in the pipe sawing machine, so as to realize machining;

step two: and installing the round pipe after cutting and forming in a pipe bending machine, and processing the workpiece after setting to form an elbow. Before the pipe bender is processed, the pipe diameter and the elbow size of the processed workpiece are set according to the technological requirements of product processing, and the workpiece is processed after the setting is finished;

step three: and fixing the elbow in an automatic shaping machine, and utilizing the shaping machine to shape the cylindricity and form and location tolerance of the pipe diameter to the qualified size. Therefore, the integral accuracy of the device is improved, and the phenomenon of large form and position tolerance of a workpiece during processing is avoided;

step four: and after the workpiece is formed, machining the bent head after shaping by using a turning machining center, and turning the parts beyond the two ends of the bent head according to the technological requirements in the machining process of the workpiece.

Step five: grinding and polishing the turned elbow product by using an elbow polishing machine to reduce the roughness of the surface of a workpiece so as to obtain a bright and smooth surface and avoid the defect that the pipe wall has scratches;

step six: and laser engraving information such as the size of the elbow, the furnace number and the like on the surface of the elbow by using a laser engraving machine, and packaging and warehousing after the processing is finished.

Further, the elbow adopts the cast iron pipe, and the processing angle is degree 90, and operating personnel need debug the processing equipment according to material and angle in the course of working to just can be better process the work piece.

And further, in the third step, the shaped elbow is arranged in a lathe, and the lathe is used for processing the workpiece. And a user sets the working procedure of the turning center by using the lathe control panel according to the actual machining requirement, performs idle running machining by using the lathe idle running program after the setting is finished, and starts to machine the workpiece after the idle running machining is correct.

Further, in the first step, the angle formed between the circular tube and the cutting knife before the pipe sawing machine cuts is adjusted according to the angle actually required to be machined by the workpiece. Therefore, the phenomenon that the wall thickness of the workpiece is different from the same roundness of the elbow and is not uniform when the subsequent bending process is carried out on the workpiece is avoided, the size of the workpiece before cutting is larger than the processing requirement, and the phenomenon that the device is damaged when the first process is carried out is avoided.

Further, in the sixth step, after the laser engraving machine engraves the elbow, the elbow is sealed and packaged, and is put in storage. The service personnel distinguish different elbows, utilize elbow packagine machine to seal the membrane packing to the same elbow after distinguishing, utilize transportation equipment to put in storage respectively the elbow of different sizes, stove number after sealing the membrane packing.

The elbow is polished and then cleaned, the surface and the inside of the elbow are easy to remain oil stains and scraps produced in the machining process after being machined after the elbow is turned, polished and laser engraved, and the remaining oil stains and scraps are easy to damage the elbow after being packaged and stored without being cleaned, so that the integral quality of the elbow is influenced. As the elbow and the tool bit are physically cooled by using the cooling liquid when the elbow is machined by the turning machining center, the surface of the elbow is left with oil stains, and scraps are easy to remain in the polishing process, the first cleaning is carried out after the turning and polishing; secondly, after the elbow is subjected to laser engraving, engraving scraps are easy to remain on the surface of the workpiece, so that the workpiece is subjected to secondary cleaning before being stored and put in storage.

Because the elbow is irregular and needs to be cleaned on the surface and the inner surface at the same time, the elbow is cleaned by the deoiling ultrasonic cleaner, when in use, a high-frequency oscillation signal sent by an ultrasonic generator is converted into high-frequency mechanical oscillation through a transducer and is transmitted into a medium cleaning solvent, ultrasonic waves are radiated forwards at intervals in a cleaning solution to make the liquid flow to generate tens of thousands of micro bubbles with the diameter of 50-500 mu m, the micro bubbles in the liquid vibrate under the action of a sound field, the bubbles form and grow in a negative pressure region in which the ultrasonic waves are transmitted longitudinally, and in a positive pressure region, when sound pressure reaches a certain value, the bubbles rapidly increase and then suddenly close, and shock waves are generated when the bubbles close, thousands of atmospheric pressure is generated around the bubbles to destroy insoluble dirt and disperse the insoluble dirt in the cleaning solution, when the group particles are wrapped by oil dirt and adhered to the surface of the cleaning piece, the oil is emulsified, solid particles are separated, and therefore the purpose of cleaning the cleaning piece is achieved.

The elbow is dried after being cleaned, the classification of the drying treatment process and the heat treatment of the elbow principle mean that the heating temperature, the hot air circulation time and the cooling speed are controlled according to a certain heat treatment standard, and the main purpose is to remove residual water stains on the surface of the elbow and improve the production efficiency of the elbow. The elbow drying process comprises four steps of feeding, time and temperature control, hot air circulation, cooling and blanking.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A manufacturing method of an elbow is characterized in that: the method comprises the following steps:

2. The method of claim 1, wherein: the elbow adopts cast iron pipe, and the processing angle is 90.

3. The method of claim 1, wherein: and step three, the shaped elbow is arranged in a lathe, and the lathe is used for processing the workpiece.

4. The method of claim 1, wherein: in the first step, the angle formed between the round pipe and the cutting knife before the pipe sawing machine cuts is adjusted according to the angle actually required to be processed by the workpiece.

5. The method of claim 1, wherein: and sixthly, after the elbow is carved by the laser carving machine, the elbow is sealed and packaged, and is put in storage.