CN112676778B - Machining method of three-way metal structural part - Google Patents
Machining method of three-way metal structural part Download PDFInfo
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Abstract
The application discloses a method for processing a three-way metal structural part, which comprises the following steps: preparing a rectangular blank block through rough milling, and cutting the rectangular blank block into a cross structure according to the size of a preset three-way metal structural part and a preset three-axis cutting method; processing the cross structure through numerical control turning to obtain an initial three-way metal structural part, wherein the initial three-way metal structural part comprises a first joint, a second joint and a third joint part to be processed; and cutting the third joint part to be processed according to the preset three-axis cutting method to obtain a third joint, and processing the first joint, the second joint, the third joint and the inner cavity through numerical control turning to obtain the three-way metal structural part. The technical problem that tee bend metallic structure machining efficiency is lower among the prior art has been solved in this application.
Description
Technical Field
The application relates to the technical field of machining, in particular to a machining method of a three-way metal structural part.
Background
The three-way metal structural component is widely applied to industries such as petroleum, chemical industry, nuclear power plants, machinery and the like, has different functions in different industries, for example, in the petroleum or chemical industry, the three-way metal structural component is mainly arranged in a pipe network for conveying liquid and gas and is usually arranged at a gathering part of three same or different pipelines, and has the main function of changing the movement direction of fluid. The three-way metal structural part mostly has the characteristics of complexity and abnormity, and how to improve the machining efficiency of the three-way metal structural part has important influence on the machining of the three-way metal structural part.
At present, the common three-way metal structural part machining process comprises the following steps: the method comprises the following steps of rough milling to obtain a rectangular blank block, aging treatment, rough milling of a left end face, finish milling of a left end face, rough milling of a right end face, finish milling of a right end face, milling of an upper end face, drilling of holes in a left side face, drilling of holes in a right side face, drilling of holes in an upper side face, detection, cleaning, warehousing and the like, but in the existing three-way metal structure processing process, on one hand, multiple rough milling processes are required; on the other hand, when the processes of drilling each hole on the left side surface, drilling each hole on the right side surface and drilling each hole on the upper side surface are carried out, a special fixture needs to be prepared to clamp the three-way metal structural member on a lathe, so that the processing process of the three-way metal structural member is complex, the consumed time is long, and the processing efficiency of the three-way metal structural member is low.
Disclosure of Invention
The technical problem that this application was solved is: aiming at the fact that the machining efficiency of a three-way metal structural part in the prior art is low, the application provides a machining method of the three-way metal structural part, in the scheme provided by the embodiment of the application, on one hand, a rectangular blank block is cut into a cross-shaped structure according to a preset three-axis cutting method, then the cross-shaped structure is machined through numerical control turning to obtain an initial three-way metal structural part, the rough milling times in the machining process are reduced, the time consumed by the complex machining process of the three-way metal structural part is shortened, and the machining efficiency of the metal structural part is improved; on the other hand, the existing vice is directly used for clamping the first branch structure or the second branch structure, a special clamping tool is not required to be prepared for clamping the first branch structure or the second branch structure, the time length that the three-way metal structural member is complex in machining process and needs to be consumed is reduced, and the machining efficiency of the metal structural member is improved.
In a first aspect, a method for processing a three-way metal structural member provided in an embodiment of the present application includes:
preparing a rectangular blank block through rough milling, and cutting the rectangular blank block into a cross structure according to the size of a preset three-way metal structural part and a preset three-axis cutting method;
processing the cross structure through numerical control turning to obtain an initial three-way metal structural part, wherein the initial three-way metal structural part comprises a first joint, a second joint and a third joint part to be processed;
and cutting the third joint part to be processed according to the preset three-axis cutting method to obtain a third joint, and processing the first joint, the second joint, the third joint and the inner cavity through numerical control turning to obtain the three-way metal structural part.
In the scheme that this application embodiment provided, prepare through rough milling and obtain the rectangle blank piece, will according to predetermineeing tee bend metallic structure size and predetermineeing the triaxial line cutting method the cutting of rectangle blank piece is cruciform structure, then it is right through numerical control car processing cruciform structure is processed and is obtained initial tee bend metallic structure, again according to predetermine the triaxial line cutting method right wait to process the third joint portion and cut and obtain the third joint, it is right through numerical control car processing the first joint the second joint with the third joint appearance and inner chamber are processed and are obtained tee bend metallic structure. In the scheme provided by the embodiment of the application, the rectangular blank block is cut into the cross-shaped structure according to the preset three-axis cutting method, and then the cross-shaped structure is processed through numerical control turning to obtain the initial three-way metal structural part, so that the number of rough milling times in the processing process is reduced, the time that the processing technology of the three-way metal structural part is complex and needs to be consumed is shortened, and the processing efficiency of the metal structural part is improved.
Optionally, the cross-shaped structure comprises: the first branch structure corresponding to the first joint, the second branch structure corresponding to the second joint, a third branch structure arranged opposite to the first branch structure, a fourth branch structure corresponding to the second branch structure, and a process lengthening part arranged on the third branch structure and the fourth branch structure.
Optionally, the symmetry between the process extensions on the first and third branch structures and between the process extensions on the second and fourth branch structures is not greater than 0.05.
Optionally, the length of the process extension part ranges from (20mm, 30mm), and the machining allowance in the thickness direction is 1 mm.
Optionally, before the cross-shaped structure is processed by numerical control turning to obtain the initial three-way metal structural member, the method further includes:
vertically clamping the square surface of the first branch structure through a preset vice, and processing a process lengthening part on the first branch structure into a cylindrical structure through numerical control milling;
and adjusting the square surface of the second branch structure vertically clamped by the preset vice, and processing the process lengthening part on the second branch structure into a cylindrical structure through numerical control milling.
In the scheme that this application embodiment provided, through numerical control car processing obtaining initial tee bend metallic structure spare in-process processing the cruciform structure, carry out the clamping to the first branch structure or the second branch structure of cruciform structure through the vice, can directly utilize current vice to carry out the clamping to first branch structure or second branch structure, need not prepare special clamping instrument and carry out the clamping to first branch structure or second branch structure, it needs the long duration of consumption to have reduced tee bend metallic structure spare processing technology complicacy, metallic structure spare machining efficiency has been improved.
Optionally, it is right through numerical control car processing the cruciform structure processes and obtains initial tee bend metallic structure spare, include:
clamping the cylindrical structure corresponding to the first branch structure through a three-jaw clamping tool preset on a machine tool, and processing the first branch structure on the cross structure through the numerical control turning to obtain the first joint;
and adjusting the preset three-jaw clamping tool to clamp the cylindrical structure corresponding to the second branch structure, and processing the second branch structure on the cross structure through the numerical control turning to obtain the second joint.
Optionally, the first joint, the second joint, the third joint and the inner cavity are processed by numerical control turning to obtain a three-way metal structural member, including:
constructing a clamping auxiliary tool profile model according to the sizes, the structures and the included angles of the first branch structure and the second branch structure, and preparing to obtain a clamping auxiliary tool according to the clamping auxiliary tool profile model;
arranging the clamping auxiliary tool between the first branch structure and the second branch structure, and fixing the cross-shaped structure on a processing lathe through the vice clamping and the clamping auxiliary tool;
and processing the shapes and the inner cavity of the first joint, the second joint and the third joint through numerical control milling to obtain the three-way metal structural part.
Drawings
Fig. 1 is a schematic flow chart of a method for machining a three-way metal structural member according to an embodiment of the present disclosure;
FIG. 2 is a schematic side view of a cruciform structure according to embodiments of the present application;
FIG. 3 is a schematic three-dimensional view of a cruciform structure according to an embodiment of the present application;
fig. 4 is a schematic diagram of a profile of a third joint portion to be machined by a three-axis cutting process according to an embodiment of the present disclosure;
fig. 5 is a schematic view of a numerical control milling profile feature model provided in an embodiment of the present application.
Detailed Description
In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, 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 application.
The method for machining the three-way metal structural member provided by the embodiment of the present application is further described in detail with reference to the drawings in the specification, and the specific implementation manner of the method may include the following steps (the method flow is shown in fig. 1):
step 101, preparing a rectangular blank block through rough milling, and cutting the rectangular blank block into a cross structure according to the size of a preset three-way metal structural part and a preset three-axis cutting method.
Specifically, in the scheme provided by the embodiment of the present application, the rectangular billet block can contain the three-way metal structural member to be processed, that is, the size of the rectangular billet block is larger than that of the three-way metal structural member. The three-way metal structural member includes three joints, wherein the three joints may be circular joints or joints with other shapes, and are not limited herein.
Further, after the rectangular blank block is prepared, the rectangular blank block is cut into a cross-shaped structure according to the size of a preset three-way metal structural part by taking the three axes as a reference. In the solutions provided in the embodiments of the present application, there are a plurality of cross-shaped structures, and one of the cross-shaped structures is described as an example below.
In one possible implementation, the cross-shaped structure includes: the first branch structure corresponding to the first joint, the second branch structure corresponding to the second joint, a third branch structure arranged opposite to the first branch structure, a fourth branch structure corresponding to the second branch structure, and a process lengthening part arranged on the third branch structure and the fourth branch structure.
Referring to fig. 2 and 3, fig. 2 is a schematic side view of a cross-shaped structure provided in an embodiment of the present application; fig. 3 is a three-dimensional schematic diagram of a cross-shaped structure provided in an embodiment of the present application. In fig. 2 and 3, the first branch structure is at an angle of 90 ° between the second branch structures. In fig. 2, reference numeral 1 denotes a three-way metal structural member, and reference numeral 2 denotes a three-axis cutting model. The sizes of the first branch structure and the second branch structure are not smaller than the preset sizes of the first joint and the second joint. The cross structure can contain the three-way metal structural part to be processed, namely the size of the cross structure is larger than that of the three-way metal structural part.
Further, in a possible implementation manner, the symmetry degree between the process extensions on the first branch structure and the third branch structure and the symmetry degree between the process extensions on the second branch structure and the fourth branch structure are not greater than 0.05.
Further, in a possible implementation manner, the length of the process extension part is in a range of (20mm, 30mm), and the machining allowance in the thickness direction is 1 mm.
In the solution provided in the embodiment of the present application, the allowance in the thickness direction refers to an additional thickness added on the basis of the required thickness.
And 102, processing the cross structure through numerical control turning to obtain an initial three-way metal structural part, wherein the initial three-way metal structural part comprises a first joint, a second joint and a third joint part to be processed.
Specifically, in the scheme provided in the embodiment of the present application, after the cross-shaped structure is obtained, the process extension portion in the cross-shaped structure needs to be processed in consideration of the requirement of turning and clamping.
In a possible implementation manner, before the machining of the cross-shaped structure by numerical control turning to obtain the initial three-way metal structural member, the method further includes: vertically clamping the square surface of the first branch structure through a preset vice, and processing a process lengthening part on the first branch structure into a cylindrical structure through numerical control milling; and adjusting the square surface of the second branch structure vertically clamped by the preset vice, and processing the process lengthening part on the second branch structure into a cylindrical structure through numerical control milling.
Specifically, after the square face of the first branch structure is vertically clamped by a preset vice, a processing zero point is set within a range of 0.1 of the diameter. The process of processing the process extension portion on the second branch structure into a cylindrical structure is similar to that of the first branch structure, and is not described herein again.
In the scheme that this application embodiment provided, through numerical control car processing obtaining initial tee bend metallic structure spare in-process processing the cruciform structure, carry out the clamping to the first branch structure or the second branch structure of cruciform structure through the vice, can directly utilize current vice to carry out the clamping to first branch structure or second branch structure, need not prepare special clamping instrument and carry out the clamping to first branch structure or second branch structure, it needs the long duration of consumption to have reduced tee bend metallic structure spare processing technology complicacy, metallic structure spare machining efficiency has been improved.
Further, in a possible implementation manner, the machining of the cross-shaped structure by numerical control turning to obtain an initial three-way metal structural member includes: clamping the cylindrical structure corresponding to the first branch structure through a three-jaw clamping tool preset on a machine tool, and processing the first branch structure on the cross structure through the numerical control turning to obtain the first joint; and adjusting the preset three-jaw clamping tool to clamp the cylindrical structure corresponding to the second branch structure, and processing the second branch structure on the cross structure through the numerical control turning to obtain the second joint.
For the convenience of understanding, the following brief description is provided for the process of machining the cross-shaped structure by numerical control turning to obtain the initial three-way metal structural part. The specific processing steps are as follows:
step 1, clamping the cylindrical surface on the first branch structure by three claws, aligning the square surface at the outer circular joint within 0.1, and setting a processing zero point.
Step 2, numerically controlled lathing the shape of the first branch structure and the size of the inner cavity to obtain a first joint, wherein the shape sealing conical surface needs to meet the requirement of surface precision; the size of the outer shape and inner cavity
And 3, clamping the cylindrical surface on the second branch structure by the three claws again, and processing the appearance of the second branch structure and the size of the inner cavity to obtain the second joint.
103, cutting the third joint part to be processed according to the preset three-axis cutting method to obtain a third joint, and processing the first joint, the second joint, the third joint and the inner cavity through numerical control turning to obtain the three-way metal structural part.
In one possible implementation, machining the first joint, the second joint, the third joint and the inner cavity by numerical control turning to obtain the three-way metal structural member includes:
constructing a clamping auxiliary tool profile model according to the sizes, the structures and the included angles of the first branch structure and the second branch structure, and preparing to obtain a clamping auxiliary tool according to the clamping auxiliary tool profile model;
arranging the clamping auxiliary tool between the first branch structure and the second branch structure, and fixing the cross-shaped structure on a processing lathe through the vice clamping and the clamping auxiliary tool;
and processing the shapes and the inner cavity of the first joint, the second joint and the third joint through numerical control milling to obtain the three-way metal structural part.
Specifically, the process of cutting the third joint part to be machined according to the preset three-axis cutting method to obtain a third joint is as follows:
(1) the pressure plate clamps the middle area of the first joint and the second joint within the range of 0.1 of the side surface and the top surface of the positive profile.
(2) And cutting the third joint part to be processed by adopting a three-axis line, and processing the contour and the size of the third joint part to be processed. Specifically, referring to fig. 4, a schematic profile of a third joint portion to be machined is machined by three-axis cutting machining according to an embodiment of the present application.
Specifically, the process of processing the shapes and the inner cavity of the first joint, the second joint and the third joint through numerical control turning to obtain the three-way metal structural part is as follows:
1. the clamping assistive tool is designed according to an included angle surface between the first joint and the second joint, the surface of the assistive tool needs to be higher than the highest point of the part appearance, and a transition fillet at the joint included angle is avoided.
2. And (3) clamping by using a vice, using a clamping auxiliary tool to tightly jack the included angle vertical plane at the joint, aligning the top surface and the side surface of the part, and setting a processing zero point.
3. And (4) carrying out numerical control machining on the characteristics and the size of one side, then turning over, and re-clamping, aligning and machining the characteristics and the size of the back. Specifically, referring to fig. 5, a schematic diagram of a profile feature model of a numerical control milling machine provided in an embodiment of the present application is shown. In fig. 5, reference numeral 3 denotes a clamping aid, and reference numeral 4 denotes a vise.
In the scheme that this application embodiment provided, prepare through rough milling and obtain the rectangle blank piece, will according to predetermineeing tee bend metallic structure size and predetermineeing the triaxial line cutting method the cutting of rectangle blank piece is cruciform structure, then it is right through numerical control car processing cruciform structure is processed and is obtained initial tee bend metallic structure, again according to predetermine the triaxial line cutting method right wait to process the third joint portion and cut and obtain the third joint, it is right through numerical control car processing the first joint the second joint with the third joint appearance and inner chamber are processed and are obtained tee bend metallic structure. In the scheme provided by the embodiment of the application, the rectangular blank block is cut into the cross-shaped structure according to the preset three-axis cutting method, and then the cross-shaped structure is processed through numerical control turning to obtain the initial three-way metal structural part, so that the number of rough milling times in the processing process is reduced, the time that the processing technology of the three-way metal structural part is complex and needs to be consumed is shortened, and the processing efficiency of the metal structural part is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A machining method of a three-way metal structural part is characterized by comprising the following steps:
preparing a rectangular blank block through rough milling, and cutting the rectangular blank block into a cross structure according to the size of a preset three-way metal structural part and a preset three-axis cutting method;
processing the cross structure through numerical control turning to obtain an initial three-way metal structural part, wherein the initial three-way metal structural part comprises a first joint, a second joint and a third joint part to be processed;
cutting the third joint part to be processed according to the preset three-axis cutting method to obtain a third joint, and processing the first joint, the second joint, the third joint and the inner cavity through numerical control milling to obtain a three-way metal structural part;
the cruciform structure includes: the first branch structure corresponding to the first joint, the second branch structure corresponding to the second joint, a third branch structure arranged opposite to the first branch structure, a fourth branch structure corresponding to the second branch structure, and process lengthening parts arranged on the third branch structure and the fourth branch structure;
the numerical control milling processing is carried out on the first joint, the second joint and the third joint appearance and the inner cavity to obtain a three-way metal structural part, and the method comprises the following steps:
constructing a clamping auxiliary tool profile model according to the sizes, the structures and the included angles of the first branch structure and the second branch structure, and preparing to obtain a clamping auxiliary tool according to the clamping auxiliary tool profile model;
arranging the clamping auxiliary tool between the first branch structure and the second branch structure, and fixing the cross-shaped structure on a processing lathe through vice clamping and the clamping auxiliary tool;
and processing the shapes and the inner cavity of the first joint, the second joint and the third joint through numerical control milling to obtain the three-way metal structural part.
2. The method of claim 1, wherein a degree of symmetry between the process extensions on the first and third branch structures and the process extensions on the second and fourth branch structures is no greater than 0.05.
3. The method of claim 2, wherein the length of the process extension ranges from 20mm to 30mm, and the machining allowance in the thickness direction is 1 mm.
4. The method of claim 3, wherein prior to machining the cruciform structure to obtain the initial three-way metallic structure by numerical control turning, further comprising:
vertically clamping the square surface of the first branch structure through a preset vice, and processing a process lengthening part on the first branch structure into a cylindrical structure through numerical control milling;
and adjusting the square surface of the second branch structure vertically clamped by the preset vice, and processing the process lengthening part on the second branch structure into a cylindrical structure through numerical control milling.
5. The method of claim 4, wherein machining the cruciform structure to obtain an initial three-way metallic structure by numerical control turning comprises:
clamping the cylindrical structure corresponding to the first branch structure through a three-jaw clamping tool preset on a machine tool, and processing the first branch structure on the cross structure through the numerical control turning to obtain the first joint;
and adjusting the preset three-jaw clamping tool to clamp the cylindrical structure corresponding to the second branch structure, and processing the second branch structure on the cross structure through the numerical control turning to obtain the second joint.
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| CN202011511696.6A CN112676778B (en) | 2020-12-18 | 2020-12-18 | Machining method of three-way metal structural part |
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| CN202011511696.6A CN112676778B (en) | 2020-12-18 | 2020-12-18 | Machining method of three-way metal structural part |
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| CN112676778B true CN112676778B (en) | 2022-04-05 |
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| CN114310176B (en) * | 2021-12-29 | 2023-03-31 | 贵州航飞精密制造有限公司 | Machining method and clamping equipment for three-way joint |
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| DE102006003259A1 (en) * | 2006-01-19 | 2007-07-26 | Behr Thermot-Tronik Gmbh | Method for producing valve housings and valve housings |
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| GB544621A (en) * | 1940-12-03 | 1942-04-21 | Arthur Larue Parker | Improvements in forming finished metal units of various selective designs |
| US3417450A (en) * | 1966-11-25 | 1968-12-24 | Brass Craft Mfg Co | Method for making a plumbing valve body |
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| CN102962651A (en) * | 2012-12-14 | 2013-03-13 | 宝鸡市守善管件有限公司 | Method for manufacturing a large-outside-diameter equal-diameter titanium tee joint |
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