Special machining equipment and machining process for eccentric reducing tee

Abstract

The present application relates to eccentric three-way pipe machining technical field, especially a special machining equipment and its machining process for eccentric three-way pipe, the special machining equipment includes: fixed seat, conveying track, workbench, the fixed seat is located on one side of conveying track, and the first machining mechanism, the second machining mechanism and the third machining mechanism are sequentially arranged along the workpiece conveying direction, the cutting mechanism is used for cutting workpiece, the first machining mechanism is used for processing the inner and outer wall of two coplanar pipe mouths of eccentric three-way pipe, the second machining mechanism is used for processing the inner and outer wall of the third pipe mouth of eccentric three-way pipe, and the third machining mechanism is used for rounding the junction of two coplanar pipe mouths and the inner and outer wall of the third pipe mouth of eccentric three-way pipe.The present application can round the junction of two coplanar pipe mouths and the inner and outer wall of the third pipe mouth of eccentric three-way pipe through the setting of the third machining mechanism, and the service life of the whole eccentric three-way pipe can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of eccentric three-way pipe machining, in particular to a special machining equipment for eccentric three-way pipe and a machining process thereof. BACKGROUND

[0002] The eccentric three-way pipe is composed of three pipe openings with different diameters, wherein two pipe openings have the same diameter and are located in the same plane, and the other pipe opening deviates from the plane and has a diameter greater or less than that of the two pipe openings, thereby forming an eccentric three-way pipe structure, which is widely used in residential cold and hot water pipe systems, industrial water and chemical substance transportation and other fields.

[0003] At present, in the machining process of the eccentric three-way pipe, the connecting portions between the inner and outer walls of the two coplanar pipe openings and the third pipe opening are not chamfered, and the connecting portions between the inner and outer walls of the two coplanar pipe openings and the third pipe opening are not smoothly transitioned, so that the structural strength of the connecting portions between the inner and outer walls of the two coplanar pipe openings and the third pipe opening is affected, thereby affecting the service life of the eccentric three-way pipe, and at the same time, the flow velocity of the water flow at the connecting portions between the inner walls of the two coplanar pipe openings and the third pipe opening is affected. SUMMARY

[0004] In view of the above-mentioned shortcomings in the prior production technology, the present application provides a special machining equipment for eccentric three-way pipe and a machining process thereof, which can chamfer the connecting portions between the inner and outer walls of the two coplanar pipe openings and the third pipe opening through the improvement of the structure of the eccentric three-way pipe, so as to improve the service life of the entire eccentric three-way pipe and the flow velocity of the water flow at the connecting portions between the inner walls of the two coplanar pipe openings and the third pipe opening.

[0005] The technical scheme adopted by the present application is as follows:

[0006] A special machining equipment for eccentric three-way pipe, comprising: a fixed seat, a conveying track, a workbench, a cutting mechanism, a first machining mechanism, a second machining mechanism and a third machining mechanism which are sequentially arranged on the fixed seat beside the conveying track along the conveying direction of the workpiece, the workbench is installed on the conveying track, the conveying track is installed on the fixed seat, the workbench is used for carrying the workpiece, the conveying track is used for conveying the workpiece, the cutting mechanism is used for cutting the workpiece, the first machining mechanism is used for machining the inner and outer walls of the two coplanar pipe openings of the eccentric three-way pipe, the second machining mechanism is used for machining the inner and outer walls of the third pipe opening of the eccentric three-way pipe, and the third machining mechanism is used for chamfering the connecting portions between the inner and outer walls of the two coplanar pipe openings and the third pipe opening of the eccentric three-way pipe.

[0007] Therefore, by arranging the third machining mechanism, the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening of the eccentric reducing tee can be chamfered, and compared with the existing eccentric reducing tee without chamfering, the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening of the eccentric reducing tee is smoothly transitioned after chamfering, so that the structural strength of the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening of the eccentric reducing tee can be improved, the service life of the entire eccentric reducing tee is improved, and the flow speed of water at the connection between the two coplanar pipe openings and the inner wall of the third pipe opening can be improved due to the smooth transition.

[0008] As a further improvement of the above technical solution: the third machining mechanism comprises a first driving member and a first cutting tool, the first driving member is installed on the fixed seat, and the first cutting tool is installed on the driving end of the first driving member. Therefore, the chamfering of the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening can be simultaneously achieved by a set of third machining mechanisms, so that the number of parts of the entire special machining equipment can be reduced, and the production cost of the entire special machining equipment can be reduced.

[0009] As a further improvement of the above technical solution: the first machining mechanism and the second machining mechanism are structurally identical; the first machining mechanism comprises a second driving member, a third driving member, an inner wall extruding member, an outer wall machining member, and a surplus cutting member, the second driving member is connected with the fixed seat, the third driving member is connected with the driving end of the second driving member, and the inner wall extruding member, the outer wall machining member, and the surplus cutting member are connected with the driving end of the third driving member; the second driving member is used to drive the inner wall extruding member or the outer wall machining member to move along the axis direction of the two coplanar pipe openings or the axis direction of the third pipe opening, the second driving member is also used to drive the surplus cutting member to move along the axis direction of the two coplanar pipe openings, the third driving member is used to drive the inner wall extruding member or the outer wall machining member to rotate along the axis direction of the two coplanar pipe openings or the axis direction of the third pipe opening, and the third driving member is also used to drive the surplus cutting member to rotate along the axis direction of the two coplanar pipe openings; the inner wall extruding member is used to extrude the material of the eccentric reducing tee to form the inner wall of the two coplanar pipe openings or the inner wall of the third pipe opening, the outer wall machining member is used to machine the outer wall of the two coplanar pipe openings or the outer wall of the third pipe opening, and the surplus cutting member is used to cut the surplus material of the eccentric reducing tee. Therefore, the inner and outer walls of the two coplanar pipe openings of the eccentric reducing tee are machined by the first machining mechanism, and the inner and outer walls of the third pipe opening of the eccentric reducing tee are machined by the second machining mechanism.

[0010] As a further improvement of the above technical solution: the cutting mechanism comprises: a fourth driving member and a second cutting tool, the fourth driving member is installed on the fixed seat, and the second cutting tool is installed on the driving end of the fourth driving member.

[0011] As a further improvement of the above technical solution: further comprising: two clamping mechanisms, two clamping mechanisms are respectively located on both sides of the workbench, the clamping mechanism is used for clamping the workpiece carried on the workbench, the clamping mechanism comprises: a fifth driving member and a clamping block, the fifth driving member is installed on the workbench through a second support, and the driving end of the clamping block is connected with the fifth driving member. Therefore, the workpiece can be clamped and fixed by the two clamping blocks, so that the workpiece can be kept stable relative to the workbench, and the workpiece will not shake on the workbench, so as to improve the machining precision of the eccentric three-way pipe.

[0012] A machining process of a special machining equipment for eccentric three-way pipe, comprising the following steps:

[0013] S1, first, the eccentric three-way pipe is extruded by a mold to form a blank, then the blank is placed on the workbench, and the blank is conveyed to the machining area of the cutting mechanism through the conveying track, and the blank is cut by the cutting mechanism to form a first-level workpiece;

[0014] S2, the first-level workpiece in S1 is conveyed to the machining area of the first machining mechanism through the conveying track, and the inner and outer walls of the two coplanar pipe openings of the first-level workpiece are machined by the first machining mechanism to form a second-level workpiece;

[0015] S3, the second-level workpiece in S2 is conveyed to the machining area of the second machining mechanism through the conveying track, and the inner and outer walls of the third pipe opening of the second-level workpiece are machined by the second machining mechanism to form a third-level workpiece;

[0016] S4, the third-level workpiece in S3 is conveyed to the machining area of the third machining mechanism through the conveying track, and the third machining mechanism is controlled to move along the first trajectory line and the second trajectory line to round the outer walls of the two coplanar pipe openings and the third pipe opening of the third-level workpiece to form a fourth-level workpiece;

[0017] S5, the third machining mechanism is inserted into the interior of the fourth-level workpiece in S4, and the third machining mechanism is controlled to move along the third trajectory line and the fourth trajectory line to round the inner walls of the two coplanar pipe openings and the third pipe opening of the fourth-level workpiece to form a fifth-level workpiece;

[0018] S6, the five-level workpiece in S5 is transported to the machining area of the first machining mechanism, and the excess material of the two coplanar pipe orifice outer walls of the five-level workpiece is cut off by the first machining mechanism to form a six-level workpiece;

[0019] S7, the six-level workpiece in S6 is taken off from the workbench, and sequentially subjected to heat treatment, shot blasting treatment, polishing treatment, and heat treatment to form a reducing eccentric tee joint.

[0020] As a further improvement of the above technical solution, the S4 comprises the following steps:

[0021] S4-1, the third-level workpiece in S3 is transported to the machining area of the third machining mechanism through the conveying track, and the third machining mechanism is controlled to jointly move along the first trajectory line and the fifth trajectory line to process the outer walls of the two coplanar pipe orifices and the third pipe orifice of the third-level workpiece with a processing depth of L1;

[0022] S4-2, the third-level workpiece in S3 is transported to the machining area of the third machining mechanism through the conveying track, and the third machining mechanism is controlled to jointly move along the first trajectory line and the sixth trajectory line to process the outer walls of the two coplanar pipe orifices and the third pipe orifice of the third-level workpiece with a processing depth of L2;

[0023] S4-3, the third-level workpiece in S3 is transported to the machining area of the third machining mechanism through the conveying track, and the third machining mechanism is controlled to jointly move along the first trajectory line and the seventh trajectory line to process the outer walls of the two coplanar pipe orifices and the third pipe orifice of the third-level workpiece with a processing depth of L3 to form a fourth-level workpiece;

[0024] L1>L2>L3. Thus, the gradual processing of the outer wall fillet can avoid damage to the material caused by one-time fillet forming, thereby improving the accuracy of the fillet processing. At the same time, the processing depth gradually decreases, further improving the accuracy of the fillet processing.

[0025] As a further improvement of the above technical solution, the S5 comprises the following steps:

[0026] S5-1, the third machining mechanism is inserted into the interior of the fourth-level workpiece in S4, and the third machining mechanism is controlled to jointly move along the third trajectory line and the eighth trajectory line to process the inner walls of the two coplanar pipe orifices and the third pipe orifice of the fourth-level workpiece with a processing depth of L4;

[0027] S5-2, the third machining mechanism is controlled to jointly move along the third trajectory line and the ninth trajectory line to process the inner walls of the two coplanar pipe orifices and the third pipe orifice of the fourth-level workpiece with a processing depth of L5;

[0028] S5-3, controlling the third machining mechanism to move along the third trajectory line and the tenth trajectory line together to machine the inner walls of the two coplanar pipe openings and the third pipe opening of the four-stage workpiece to form a five-stage workpiece;

[0029] L4>L5. Thus, the gradual processing of the inner wall chamfering can avoid damage to the material caused by one-time chamfering forming, so as to improve the accuracy of the chamfering processing, and the gradually decreasing machining depth further improves the accuracy of the chamfering processing.

[0030] As a further improvement of the above technical solution: in S4, the first trajectory line refers to the intersection line of the outer walls of the two coplanar pipe openings and the third pipe opening; the second trajectory line includes a fifth trajectory line, a sixth trajectory line and a seventh trajectory line, and the fifth trajectory line, the sixth trajectory line and the seventh trajectory line are all arc lines; the movement of the first trajectory line and the second trajectory line together refers to that the first cutting tool needs to rotate along the first trajectory line and around the three-stage workpiece, and at the same time, in each cutting surface, the first cutting tool needs to move along the fifth trajectory line, the sixth trajectory line or the seventh trajectory line. Thus, the chamfering processing trajectory of the outer wall each time is an arc line, so as to ensure that the first cutting tool will not cause damage to the outer walls of the two coplanar pipe openings and the third pipe opening.

[0031] As a further improvement of the above technical solution: in S5, the third trajectory line refers to the intersection line of the inner walls of the two coplanar pipe openings and the third pipe opening; the fourth trajectory line includes an eighth trajectory line, a ninth trajectory line and a tenth trajectory line, the eighth trajectory line and the ninth trajectory line are straight lines, and the tenth trajectory line is an arc line; the movement of the third trajectory line and the fourth trajectory line together refers to that the first cutting tool needs to rotate along the third trajectory line and around the four-stage workpiece, and at the same time, in each cutting surface, the first cutting tool needs to move along the eighth trajectory line, the ninth trajectory line and the tenth trajectory line. Thus, the trajectories of the first two chamfering processes of the inner wall are straight lines, so as to improve the chamfering machining speed, and the trajectory of the last chamfering process is an arc line, so as to ensure smooth transition at the connection between the inner walls of the two coplanar pipe openings and the third pipe opening.

[0032] The beneficial effects of the present application are as follows:

[0033] Through the arrangement of the third machining mechanism, the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening of the eccentric reducing tee can be chamfered, compared with the existing eccentric reducing tee without chamfering, the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening of the eccentric reducing tee is smoothly transitioned after chamfering, the structural strength of the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening of the eccentric reducing tee can be improved, so that the service life of the entire eccentric reducing tee is improved, and at the same time, when in use, the flow speed of water flow at the connection between the two coplanar pipe openings and the inner wall of the third pipe opening can be improved due to the smooth transition of the connection between the two coplanar pipe openings and the inner wall of the third pipe opening.

[0034] The present application also includes the following advantages:

[0035] 1、The present application can simultaneously satisfy the chamfering of the connection between the two coplanar pipe openings and the inner and outer walls of the third pipe opening through a set of third machining mechanism, so that the number of parts of the entire special machining equipment can be reduced, and the production cost of the entire special machining equipment can be reduced.

[0036] 2、The gradual chamfering of the inner and outer walls can avoid damage to the material caused by one-time chamfering, so that the precision of the chamfering can be improved, and at the same time, the machining depth gradually decreases, so that the precision of the chamfering is further improved.

[0037] 3、The outer wall is chamfered in an arc-shaped line each time, so that the first cutting tool cannot damage the outer wall of the two coplanar pipe openings and the third pipe opening; the inner wall is chamfered in a straight line for the first two times, so that the machining speed of the chamfering is improved, and the inner wall is chamfered in an arc-shaped line for the last time, so that the smooth transition of the connection between the inner wall of the two coplanar pipe openings and the inner wall of the third pipe opening is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is a structural schematic view of the special machining equipment of the eccentric reducing tee of the present application;

[0039] Figure 2 It is a structural schematic view of the Figure 1 enlarged view of the local structure at A;

[0040] Figure 3 It is an enlarged view of the local structure at B of the Figure 1

[0041] Figure 4 It is a structural schematic view of the third machining mechanism of the present application;

[0042] Figure 5 It is a structural schematic view of the first machining mechanism of the present application;

[0043] Figure 6 ​The structural schematic diagram of the second machining mechanism of the application;

[0044] Figure 7 The structural schematic diagram of the two coplanar pipe mouth outer wall machining pieces of the application;

[0045] Figure 8 The structural schematic diagram of the third pipe mouth outer wall machining piece of the application;

[0046] Figure 9 The structural schematic diagram of the excess cutting piece of the application;

[0047] Figure 10 The structural schematic diagram of the workbench and clamping mechanism installation of the application;

[0048] Figure 11 The flow chart of the machining process of the special machining equipment for the eccentric reducing tee of the application;

[0049] Figure 12 The effect diagram of the eccentric reducing tee machining of the application;

[0050] Figure 13 The sectional view effect diagram of the eccentric reducing tee machining of the application;

[0051] Figure 14 The flow chart of S4 of the application;

[0052] Figure 15 The sectional front view of the four-stage workpiece of the application;

[0053] Figure 16 The sectional front view of the four-stage workpiece of the application; Figure 15 The enlarged schematic diagram of the local structure at C of the application;

[0054] Figure 17 The flow chart of S5 of the application;

[0055] Figure 18 The sectional front view of the five-stage workpiece of the application;

[0056] Figure 19 The sectional front view of the five-stage workpiece of the application; Figure 18 The enlarged schematic diagram of the local structure at D of the application;

[0057] Figure 20 The structural schematic diagram of the eccentric reducing tee of the application;

[0058] Figure 21 The sectional view of the eccentric reducing tee of the application.

[0059] 1, fixed seat;

[0060] 2, conveying track;

[0061] 3, workbench;

[0062] 4, cutting mechanism;

[0063] 401, fourth driving member; 402, second cutting tool;

[0064] 5, first processing mechanism;

[0065] 501, second driving member; 502, third driving member; 503, inner wall extrusion member; 504, outer wall processing member; 505, excess cutting member; 506, first supporting member;

[0066] 6, second processing mechanism;

[0067] 7, third processing mechanism;

[0068] 701, first driving member; 702, first cutting tool;

[0069] 8, clamping mechanism;

[0070] 801, fifth driving member; 802, clamping block; 803, second supporting member. DETAILED DESCRIPTION

[0071] The specific embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0072] As Figures 1 to 10 shown, a special processing equipment for eccentric reducing tee includes a fixed seat 1, a conveying track 2, a workbench 3, a cutting mechanism 4, a first processing mechanism 5, a second processing mechanism 6, and a third processing mechanism 7 which are sequentially arranged on the fixed seat 1 beside the conveying track 2 along the conveying direction of the workpiece. The workbench 3 is installed on the conveying track 2, and the conveying track 2 is installed on the fixed seat 1. The workbench 3 is used for carrying the workpiece, and the conveying track 2 is used for conveying the workpiece. The cutting mechanism 4 is used for cutting the workpiece. The first processing mechanism 5 is used for processing the inner and outer walls of the two coplanar pipe openings of the eccentric reducing tee. The second processing mechanism 6 is used for processing the inner and outer walls of the third pipe opening of the eccentric reducing tee. The third processing mechanism 7 is used for rounding the connection between the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee. Thus, through the arrangement of the third processing mechanism 7, the connection between the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee can be rounded. Compared with the existing eccentric reducing tee which is not rounded, the eccentric reducing tee after rounding has a smooth transition at the connection between the two coplanar pipe openings and the third pipe opening, which can improve the structural strength of the connection between the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee, thereby improving the service life of the entire eccentric reducing tee. In addition, due to the smooth transition at the connection between the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee, the flow speed of the water flow at the connection between the two coplanar pipe openings and the third pipe opening can be improved.

[0073] In the embodiment, the third machining mechanism 7 comprises a first driving member 701 and a first cutting tool 702, the first driving member 701 is installed on the fixed base 1, and the first cutting tool 702 is installed on the driving end of the first driving member 701. Thus, the chamfering of the inner and outer walls of the two coplanar pipe openings and the third pipe opening can be simultaneously achieved by one set of third machining mechanism 7, and the number of parts of the whole special machining equipment can be reduced, so as to reduce the production cost of the whole special machining equipment.

[0074] Specifically, when the outer wall is chamfered, the whole third machining mechanism 7 is located outside the workpiece; when the inner wall is chamfered, the first driving member 701 and the first cutting tool 702 are both inserted into the inside of the workpiece.

[0075] For example, the first driving member 701 is a six-degree-of-freedom robot.

[0076] In the embodiment, the first machining mechanism 5 and the second machining mechanism 6 have the same structure; the first machining mechanism 5 comprises a second driving member 501, a third driving member 502, an inner wall extruding member 503, an outer wall machining member 504 and a surplus cutting member 505, the second driving member 501 is connected with the fixed base 1, the third driving member 502 is connected with the driving end of the second driving member 501, and the inner wall extruding member 503, the outer wall machining member 504 and the surplus cutting member 505 are all connected with the driving end of the third driving member 502; the second driving member 501 is used to drive the inner wall extruding member 503 or the outer wall machining member 504 to move along the axial direction of the two coplanar pipe openings or the axial direction of the third pipe opening of the eccentric reducing tee, the second driving member 501 is also used to drive the surplus cutting member 505 to move along the axial direction of the two coplanar pipe openings of the eccentric reducing tee, the third driving member 502 is used to drive the inner wall extruding member 503 or the outer wall machining member 504 to rotate along the axial direction of the two coplanar pipe openings or the axial direction of the third pipe opening of the eccentric reducing tee, the third driving member 502 is also used to drive the surplus cutting member 505 to rotate along the axial direction of the two coplanar pipe openings of the eccentric reducing tee, the inner wall extruding member 503 is used to extrude the material of the eccentric reducing tee to extrude the inner walls of the two coplanar pipe openings or the inner wall of the third pipe opening, the outer wall machining member 504 is used to machine the outer walls of the two coplanar pipe openings or the outer wall of the third pipe opening of the eccentric reducing tee, and the surplus cutting member 505 (as shown in the figure) is used to cut the surplus material of the eccentric reducing tee. Thus, the inner and outer walls of the two coplanar pipe openings of the eccentric reducing tee are machined by the first machining mechanism 5, and the inner and outer walls of the third pipe opening of the eccentric reducing tee are machined by the second machining mechanism 6. Figure 9

[0077] ​Specifically, in the first machining mechanism 5, the second driving member 501 is connected with the fixed base 1 through the first support member 506; in the second machining mechanism 6, two second driving members 501 are arranged, and the two second driving members 501 are both connected with the fixed base 1, and the telescopic ends of the two second driving members 501 are both connected with the third driving member 502 through the first support member 506.

[0078] It should be noted that:

[0079] I. The inner wall extruding member 503 includes an A inner wall extruding member 503 (as shown in Figure 5 ) and a B inner wall extruding member 503 (as shown in Figure 6 ), the A inner wall extruding member 503 is used for processing the inner walls of the two coplanar pipe openings of the eccentric three-way pipe with different diameters, and the B inner wall extruding member 503 is used for processing the inner wall of the third pipe opening of the eccentric three-way pipe with different diameters. The outer wall processing member 504 includes an A outer wall processing member 504 (as shown in Figure 7 ) and a B outer wall processing member 504 (as shown in Figure 8 ), the A outer wall processing member 504 is used for processing the outer walls of the two coplanar pipe openings of the eccentric three-way pipe with different diameters, and the B outer wall processing member 504 is used for processing the outer wall of the third pipe opening of the eccentric three-way pipe with different diameters.

[0080] II. The inner wall extruding member 503 and the outer wall processing member 504 are detachably connected with the driving end of the third driving member 502 through bolts. In use, different processing members can be used according to different processing positions of the eccentric three-way pipe with different diameters. In this way, by using the detachable connection mode, only different processing members need to be designed for different processing positions in the production process of the special processing equipment, and multiple driving mechanisms do not need to be designed. In this way, the production cost of the entire special processing equipment can be further reduced.

[0081] For example, the second driving member 501 is a gas cylinder, and the third driving member 502 is an electric motor.

[0082] In the embodiment, the cutting mechanism 4 includes a fourth driving member 401 and a second cutting tool 402. The fourth driving member 401 is installed on the fixed base 1, and the second cutting tool 402 is installed on the driving end of the fourth driving member 401. For example, the fourth driving member 401 is a six-degree-of-freedom robot.

[0083] In the embodiment, further comprising two clamping mechanisms 8 respectively located at two sides of the workbench 3, the clamping mechanism 8 is used for clamping the workpiece carried on the workbench 3, and the clamping mechanism 8 comprises a fifth driving member 801 and a clamping block 802, the fifth driving member 801 is installed on the workbench 3 through a second support member 803, and the driving end of the clamping block 802 is connected with the fifth driving member 801. Therefore, the workpiece can be clamped and fixed by the two clamping blocks 802, so that the workpiece can be kept stable relative to the workbench 3, and the workpiece will not shake on the workbench 3, so as to improve the machining precision of the eccentric reducing tee joint.

[0084] For example, the fifth driving member 801 is a pneumatic cylinder.

[0085] As shown in Figures 11 to 21 , a machining process of a special machining equipment for eccentric reducing tee joints comprises the following steps:

[0086] S1, first extruding the eccentric reducing tee joint through a mold to form a blank of the eccentric reducing tee joint, then placing the blank of the eccentric reducing tee joint on the workbench 3, and conveying the blank to the machining area of the cutting mechanism 4 through the conveying track 2, and cutting the blank through the cutting mechanism 4 to process a primary workpiece of the eccentric reducing tee joint;

[0087] S2, conveying the primary workpiece in S1 to the machining area of the first machining mechanism 5 through the conveying track 2, and processing the inner and outer walls of the two coplanar pipe openings of the primary workpiece through the first machining mechanism 5 to process a secondary workpiece;

[0088] S3, conveying the secondary workpiece in S2 to the machining area of the second machining mechanism 6 through the conveying track 2, and processing the inner and outer walls of the third pipe opening of the secondary workpiece through the second machining mechanism 6 to process a tertiary workpiece;

[0089] S4, conveying the tertiary workpiece in S3 to the machining area of the third machining mechanism 7 through the conveying track 2, and controlling the third machining mechanism 7 to move along the first trajectory line and the second trajectory line to perform chamfering on the outer walls of the two coplanar pipe openings and the third pipe opening of the tertiary workpiece to process a quaternary workpiece;

[0090] S5, extending the third machining mechanism 7 into the interior of the quaternary workpiece in S4, and controlling the third machining mechanism 7 to move along the third trajectory line and the fourth trajectory line to perform chamfering on the inner walls of the two coplanar pipe openings and the third pipe opening of the quaternary workpiece to process a quinary workpiece;

[0091] S6, the five-level workpiece in S5 is transported to the machining area of the first machining mechanism 5, and the excess material of the two coplanar pipe orifice outer walls of the five-level workpiece is cut off by the first machining mechanism 5 to form a six-level workpiece;

[0092] S7, the six-level workpiece in S6 is taken off from the workbench 3, and sequentially subjected to heat treatment, shot blasting treatment, polishing treatment and heat treatment to form the eccentric reducing tee.

[0093] Specifically, in S2, the inner walls of the two coplanar pipe orifices of the eccentric reducing tee and the inner and outer walls of the third pipe orifice are processed and formed at one time, and the outer walls of the two coplanar pipe orifices of the eccentric reducing tee need to be processed twice from both sides. On the one hand, it can avoid damage to the third pipe orifice, and on the other hand, it can ensure that the excess material is not cut.

[0094] Specifically, in S1-S6, the workpiece to be machined needs to be fixed by the clamping mechanism 8 to ensure that the workpiece remains stable relative to the workbench 3, thereby improving the machining quality of the workpiece.

[0095] Specifically, the purpose of S7 cutting the excess material is to ensure that the eccentric reducing tee (through the excess material part) can be clamped and fixed by the clamping mechanism 8 during the machining process of the eccentric reducing tee. If the outer surface of the two coplanar pipe orifices of the eccentric reducing tee is processed and formed at one time, it is a circular arc shape, which cannot be clamped and fixed subsequently, thereby affecting the machining precision of the subsequent eccentric reducing tee.

[0096] Specifically, the blank refers to any piece of material for machining the eccentric reducing tee, the first-level workpiece refers to a cuboid slightly larger than the size of the eccentric reducing tee, the second-level workpiece refers to a material for forming two coplanar pipe orifices, the third-level workpiece refers to a material for forming two coplanar pipe orifices and a third pipe orifice, the fourth-level workpiece refers to a material whose outer wall connection between the two coplanar pipe orifices and the third pipe orifice has been rounded, the fifth-level workpiece refers to a material whose outer wall connection between the two coplanar pipe orifices and the third pipe orifice and the inner wall connection between the two coplanar pipe orifices and the third pipe orifice have been rounded, and the sixth-level workpiece refers to a material obtained by cutting the excess material from the fifth-level workpiece.

[0097] In this embodiment, S4 includes the following steps:

[0098] S4-1, the third-level workpiece in S3 is transported to the machining area of the third machining mechanism 7 by the conveying track 2, and the third machining mechanism 7 is controlled to move along the first trajectory line and the fifth trajectory line to process and treat the two coplanar pipe orifices and the third pipe orifice of the third-level workpiece with a processing depth of L1;

[0099] S4-2, the third workpiece in S3 is transported to the machining area of the third machining mechanism 7 through the conveying track 2, and the third machining mechanism 7 is controlled to jointly move along the first trajectory line and the sixth trajectory line to process the outer walls of the two coplanar pipe openings and the third pipe opening of the third workpiece to a machining depth of L2;

[0100] S4-3, the third workpiece in S3 is transported to the machining area of the third machining mechanism 7 through the conveying track 2, and the third machining mechanism 7 is controlled to jointly move along the first trajectory line and the seventh trajectory line to process the outer walls of the two coplanar pipe openings and the third pipe opening of the third workpiece to a machining depth of L3 to form a fourth workpiece;

[0101] L1>L2>L3; in S4, the first trajectory line refers to the intersection line of the outer walls of the two coplanar pipe openings and the third pipe opening; the second trajectory line includes the fifth trajectory line, the sixth trajectory line, and the seventh trajectory line, all of which are arc-shaped; the joint movement of the first trajectory line and the second trajectory line means that the first cutting tool 702 needs to rotate around the third workpiece along the first trajectory line, and at the same time, in each cutting surface, the first cutting tool 702 needs to move along the fifth trajectory line, the sixth trajectory line, or the seventh trajectory line. Thus, the gradual processing of the outer wall fillet can avoid damage to the material caused by one-time fillet forming, thereby improving the accuracy of the fillet processing, and the gradually decreasing machining depth further improves the accuracy of the fillet processing; the fillet processing trajectory of the outer wall each time is an arc line to ensure that the first cutting tool 702 will not damage the outer walls of the two coplanar pipe openings and the third pipe opening.

[0102] In other words, since the space at the connection between the outer walls of the two coplanar pipe openings and the third pipe opening is narrow (i.e., is jointly constrained by the outer walls of the two coplanar pipe openings and the third pipe opening), if the arc-shaped fillet method is not used, it will greatly damage the outer walls of the two coplanar pipe openings and the third pipe opening. Such operation can ensure that the first cutting tool 702 will not damage the outer walls of the two coplanar pipe openings and the third pipe opening, thereby improving the processing quality of the eccentric reducer.

[0103] In this embodiment, S5 includes the following steps:

[0104] S5-1, the third machining mechanism 7 is inserted into the interior of the fourth workpiece in S4, and the third machining mechanism 7 is controlled to jointly move along the third trajectory line and the eighth trajectory line to process the inner walls of the two coplanar pipe openings and the third pipe opening of the fourth workpiece to a machining depth of L4;

[0105] S5-2, control the third machining mechanism 7 to move along the third trajectory line and the ninth trajectory line together to process the inner wall of the two coplanar pipe openings and the third pipe opening of the four-stage workpiece to a processing depth L5;

[0106] S5-3, control the third machining mechanism 7 to move along the third trajectory line and the tenth trajectory line together to process the inner wall of the two coplanar pipe openings and the third pipe opening of the four-stage workpiece to form a five-stage workpiece;

[0107] L4>L5; in S5, the third trajectory line refers to the intersection line of the inner wall of the two coplanar pipe openings and the inner wall of the third pipe opening; the fourth trajectory line includes the eighth trajectory line, the ninth trajectory line and the tenth trajectory line, the eighth trajectory line and the ninth trajectory line are straight lines, and the tenth trajectory line is an arc line; the third trajectory line and the fourth trajectory line move together, that is, the first cutting tool 702 needs to rotate along the third trajectory line around the four-stage workpiece, and at the same time, in each cutting surface, the first cutting tool 702 needs to move along the eighth trajectory line, the ninth trajectory line and the tenth trajectory line. Thus, the gradual processing of the inner wall fillet can avoid damage to the material caused by one-time fillet forming, so as to improve the accuracy of the fillet processing, and the processing depth gradually decreases, further improving the accuracy of the fillet processing; the trajectories of the first two fillet processing of the inner wall are straight lines, so as to improve the fillet processing speed, and the trajectory of the last fillet processing is an arc line, so as to ensure the smooth transition of the connection between the inner wall of the two coplanar pipe openings and the inner wall of the third pipe opening.

[0108] In other words, since the space of the connection between the inner wall of the two coplanar pipe openings and the inner wall of the third pipe opening is large (that is, there is no material constraint on both sides), the trajectories of the first two times of fillet processing are straight lines, so that more material can be cut off, and the amount of excess material at the position during the last fillet processing is minimized, so as to improve the fillet processing speed.

[0109] In summary, through the setting of the third machining mechanism 7, the connection between the inner and outer walls of the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee can be processed by the fillet processing, compared with the existing eccentric reducing tee without fillet processing, the connection between the inner and outer walls of the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee after the fillet processing is smooth, which can improve the structural strength of the connection between the inner and outer walls of the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee, so as to improve the service life of the entire eccentric reducing tee, and when in use, since the connection between the inner walls of the two coplanar pipe openings and the third pipe opening of the eccentric reducing tee is smooth, the flow speed of the water flow at the connection between the inner walls of the two coplanar pipe openings and the third pipe opening can be improved.

[0110] The above description is an explanation of the present application, not a limitation of the present application, the scope of the present application is defined in the claims, within the protection scope of the present application, any form of modification can be made.

Claims

1. A special processing equipment for eccentric reducing tee, characterized in that, The utility model relates to a kind of processing equipment for eccentric three-way pipe, comprising: Fixed seat (1), and Conveying track (2) and workbench (3), the workbench (3) is installed on the conveying track (2), the conveying track (2) is installed the fixed seat (1) on, the workbench (3) is used to carry workpiece, the conveying track (2) is used to convey workpiece; The fixed seat (1) is located on the conveying track (2) side, and cutting mechanism (4) is sequentially arranged along the workpiece conveying direction on the fixed seat (1), first processing mechanism (5), second processing mechanism (6) and third processing mechanism (7), the cutting mechanism (4) is used to cut workpiece, the first processing mechanism (5) is used to process the inner wall and outer wall of two coplanar pipe openings of eccentric three-way pipe, the second processing mechanism (6) is used to process the inner wall and outer wall of third pipe opening of eccentric three-way pipe, the third processing mechanism (7) is used to carry out fillet processing to the junction of two coplanar pipe openings and third pipe opening inner wall and outer wall of eccentric three-way pipe;The third processing mechanism (7) includes: First driving part (701) and first cutting tool (702), the first driving part (701) is installed on the fixed seat (1), and the first cutting tool (702) is installed in the driving end of the first driving part (701);The first processing mechanism (5) and the second processing mechanism (6) are same in structure; The first processing mechanism (5) includes: Second driving part (501), third driving part (502), inner wall extruding part (503), outer wall processing part (504) and excess cutting part (505), the second driving part (501) is connected with the fixed seat (1), the third driving part (502) is connected with the driving end of the second driving part (501), and the inner wall extruding part (503), the outer wall processing part (504) and the excess cutting part (505) are all connected with the driving end of the third driving part (502); The second driving part (501) is used to drive the inner wall extruding part (503) or the outer wall processing part (504) to move along the axis direction of two coplanar pipe openings of eccentric three-way pipe or the axis direction of third pipe opening, and the second driving part (501) is also used to drive the excess cutting part (505) to move along the axis direction of two coplanar pipe openings of eccentric three-way pipe, the third driving part (502) is used to drive the inner wall extruding part (503) or the outer wall processing part (504) to rotate along the axis direction of two coplanar pipe openings of eccentric three-way pipe or the axis direction of third pipe opening, and the third driving part (502) is also used to drive the excess cutting part (505) to rotate along the axis direction of two coplanar pipe openings of eccentric three-way pipe, the inner wall extruding part (503) is used to extrude the material of eccentric three-way pipe to extrude the inner wall of two coplanar pipe openings or the inner wall of third pipe opening, the outer wall processing part (504) is used to process the outer wall of two coplanar pipe openings or the outer wall of third pipe opening of eccentric three-way pipe, and the excess cutting part (505) is used to cut the excess material of eccentric three-way pipe.

2. The special processing equipment for eccentric reducing tees as claimed in claim 1, characterized in that: The cutting mechanism (4) comprises: A fourth driving member (401) is installed on the fixed seat (1), and a second cutting tool (402) is installed on the driving end of the fourth driving member (401).

3. The special machining apparatus for eccentric reducing tees as claimed in claim 1, characterized in that: Further comprising: Two clamping mechanisms (8) are arranged on the two sides of the workbench (3), and the clamping mechanisms (8) are used for clamping workpieces carried on the workbench (3), and the clamping mechanism (8) comprises: A fifth driving member (801) is installed on the workbench (3) through a second support member (803), and the driving end of a clamping block (802) is connected with the fifth driving member (801).

4. A machining process of a special machining apparatus for eccentric reducing tees as claimed in any one of claims 1 to 3, characterized in that: The method comprises the following steps: S1, first extruding the eccentric reducing tee through a mold to form a blank of the eccentric reducing tee, then placing the blank of the eccentric reducing tee on the workbench (3), and conveying the blank to the machining area of the cutting mechanism (4) through the conveying track (2), and cutting the blank through the cutting mechanism (4) to process a primary workpiece of the eccentric reducing tee; S2, conveying the primary workpiece in S1 to the machining area of the first machining mechanism (5) through the conveying track (2), and processing the inner and outer walls of the two coplanar pipe openings of the primary workpiece through the first machining mechanism (5) to process a secondary workpiece; S3, conveying the secondary workpiece in S2 to the machining area of the second machining mechanism (6) through the conveying track (2), and processing the inner and outer walls of the third pipe opening of the secondary workpiece through the second machining mechanism (6) to process a tertiary workpiece; S4, conveying the tertiary workpiece in S3 to the machining area of the third machining mechanism (7) through the conveying track (2), and controlling the third machining mechanism (7) to move along the first trajectory line and the second trajectory line to round the outer walls of the two coplanar pipe openings and the third pipe opening of the tertiary workpiece to process a quaternary workpiece; S5, extending the third machining mechanism (7) into the interior of the quaternary workpiece in S4, and controlling the third machining mechanism (7) to move along the third trajectory line and the fourth trajectory line to round the inner walls of the two coplanar pipe openings and the third pipe opening of the quaternary workpiece to process a quinary workpiece; S6, conveying the quinary workpiece in S5 to the machining area of the first machining mechanism (5), and cutting off the excess material of the outer walls of the two coplanar pipe openings of the quinary workpiece through the first machining mechanism (5) to form a sexta workpiece; S7, taking the sexta workpiece in S6 off the workbench (3), and sequentially performing heat treatment, shot blasting, polishing and heat treatment to form the eccentric reducing tee.

5. The process of machining of special purpose machining equipment for eccentric reducing tees as claimed in claim 4 wherein: The S4 comprises the following steps: S4-1, the third machining mechanism (7) is controlled to move along the first trajectory line and the fifth trajectory line to process the outer wall of the two coplanar nozzles and the third nozzle of the third workpiece to a depth of L1; S4-2, the third machining mechanism (7) is controlled to move along the first trajectory line and the sixth trajectory line to process the outer wall of the two coplanar nozzles and the third nozzle of the third workpiece to a depth of L2; S4-3, the third machining mechanism (7) is controlled to move along the first trajectory line and the seventh trajectory line to process the outer wall of the two coplanar nozzles and the third nozzle of the third workpiece to a depth of L3 to form a fourth workpiece; L1>L2>L3.

6. The process of machining of special purpose machining equipment for eccentric reducing tees as claimed in claim 4 wherein: The S5 includes the following steps: S5-1, the third machining mechanism (7) is controlled to move along the third trajectory line and the eighth trajectory line to process the inner wall of the two coplanar nozzles and the third nozzle of the fourth workpiece to a depth of L4; S5-2, the third machining mechanism (7) is controlled to move along the third trajectory line and the ninth trajectory line to process the inner wall of the two coplanar nozzles and the third nozzle of the fourth workpiece to a depth of L5; S5-3, the third machining mechanism (7) is controlled to move along the third trajectory line and the tenth trajectory line to process the inner wall of the two coplanar nozzles and the third nozzle of the fourth workpiece to form a fifth workpiece; L4>L5.

7. The process of machining of special purpose machining equipment for eccentric reducing tees as claimed in claim 5 wherein: In S4, the first trajectory line refers to the intersection line of the outer wall of the two coplanar nozzles and the outer wall of the third nozzle; The second trajectory line includes: The fifth trajectory line, the sixth trajectory line, and the seventh trajectory line are all arc lines; The first trajectory line and the second trajectory line move together, which means that: The first cutting tool (702) needs to rotate around the third workpiece along the first trajectory line, and at the same time, in each cutting surface, the first cutting tool (702) needs to move along the fifth trajectory line, the sixth trajectory line, or the seventh trajectory line.

8. The process of machining of special purpose machining equipment for eccentric reducing tees as claimed in claim 6 wherein: In S5, the third trajectory line refers to the intersection line of the inner wall of the two coplanar nozzles and the inner wall of the third nozzle; The fourth trajectory line includes: The eighth trajectory line and the ninth trajectory line are straight lines, and the tenth trajectory line is an arc line; The third trajectory line and the fourth trajectory line move together, which means that: The first cutting tool (702) needs to rotate around the fourth workpiece along the third trajectory line, and at the same time, in each cutting surface, the first cutting tool (702) needs to move along the eighth trajectory line, the ninth trajectory line, and the tenth trajectory line.

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