Three-way pipe fitting machining clamp

Abstract

The utility model provides a three-way pipe fitting machining clamp, and relates to the technical field of three-way pipe fitting machining, three clamping assemblies are vertically arranged on a base table, one clamping assembly can correspond to one main pipeline, synchronous positioning and clamping of the main pipelines in three directions of a three-way pipe fitting can be achieved, and in the machining process, the three-way pipe fitting can be clamped synchronously. The machining position of the main pipeline to be machined can be adjusted by horizontally rotating the base table or horizontally rotating the operation table of the machining machine tool, the normal vector of the flange machining face of the main pipeline is parallel to the main shaft direction of the operation table of the machining machine tool, machining of the flange faces of the main pipeline in three directions of the three-way pipe fitting is completed through one-time clamping, the clamping frequency is reduced, and the machining efficiency is improved. Multi-surface machining can be completed by four-axis machining equipment with one rotating shaft, expensive five-axis machining equipment with high operation difficulty does not need to be used, and the production benefit is improved; the two first fastening bolts of the clamping assembly can lock the main pipeline of the three-way pipe fitting from the two sides correspondingly, clamping stability is guaranteed, and machining precision and safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way pipe fitting processing technical field, specifically, three -way pipe fitting processing fixture. BACKGROUND

[0002] In three -way pipe fitting processing technical field, because three -way pipe fitting's structure is special, and the positioning deviation is led to in the process of processing because of unstable clamping often, influence processing accuracy and processing efficiency.

[0003] At present, the existing clamp adopts the mode of clamping a single main pipeline to process the flange face of the main pipeline, and then clamping another main pipeline after processing is completed, which leads to complicated process, multiple clamping times, easy to cause cumulative error, and low processing efficiency. UTILITY MODEL CONTENTS

[0004] The utility model solves the problem of how to conveniently process three -way pipe fitting.

[0005] In order to solve the above problem, the utility model provides a three -way pipe fitting processing fixture, which comprises:

[0006] A base station;

[0007] Three clamping assemblies are vertically arranged on the base station, and the three clamping assemblies are used for clamping the three main pipelines of the three -way pipe fitting.

[0008] Among them, the clamping assembly comprises a base, two spaced clamping parts arranged at the end of the base away from the base station and two first fastening bolts, the base and the two clamping parts form a U-shaped groove for supporting the main pipeline, the two first fastening bolts are threadedly matched with the two clamping parts one by one, the first fastening bolt penetrates through the corresponding clamping part, and the two first fastening bolts can be screwed into the clamping part to clamp the main pipeline in the U-shaped groove.

[0009] Optionally, the clamping assembly further comprises a second fastening bolt;The base is provided with a first through hole penetrating horizontally, a first threaded hole is arranged on the inner wall of the side of the first through hole away from the base station, and the first threaded hole is in communication with the U-shaped groove;Among them, the second fastening bolt is arranged in the first threaded hole and is threadedly matched with the first threaded hole, and the second fastening bolt can be screwed into the base away from the base station to abut against the main pipeline in the U-shaped groove.

[0010] Optionally, in the same clamping assembly, the two first fastening bolts and the second fastening bolt are arranged in a first virtual plane, and the first virtual plane is perpendicular to the base station.

[0011] Optionally, in the same clamping assembly, the acute angle between the screwing movement direction of the first fastening bolt and the base is 30°, and the screwing movement direction of the second fastening bolt is perpendicular to the base.

[0012] Optionally, the clamping part is provided with a first fastening plane corresponding to the outer side wall surface of the U-shaped groove, and the first fastening bolt penetrates from the first fastening plane to abut against the main pipeline; wherein the first fastening bolt is perpendicular to the first fastening plane.

[0013] Optionally, the tee pipe machining clamp further comprises a buffer part, which is arranged on the end surface of the first fastening bolt close to the tee pipe, and the buffer part is also arranged on the end surface of the second fastening bolt close to the tee pipe.

[0014] Optionally, a plurality of second threaded holes are arranged on the end surface of the base close to the base; the base is provided with a plurality of first through holes penetrating the base along the thickness direction of the base; wherein the tee pipe machining clamp further comprises a plurality of first screws, and the plurality of first screws, the plurality of first through holes and the plurality of second threaded holes are one-to-one corresponding, and the first screws penetrate the first through holes and are threadedly matched with the second threaded holes.

[0015] Optionally, a plurality of first positioning holes are further arranged on the end surface of the base close to the base; the surface of the base close to the base is provided with a plurality of second positioning holes; wherein the tee pipe machining clamp further comprises a plurality of first positioning rods, and the plurality of first positioning rods, the plurality of first positioning holes and the plurality of second positioning holes are one-to-one corresponding, a part of the first positioning rod is arranged in the first positioning hole, and another part of the first positioning rod is arranged in the second positioning hole.

[0016] Optionally, the base is further provided with at least one set of redundant holes, the orthographic projection of the redundant holes on the base is located outside the orthographic projection of the clamping assembly on the base, the redundant holes comprise a plurality of second through holes penetrating the base along the thickness direction of the base; wherein the arrangement mode of the plurality of second through holes in at least one set of the redundant holes corresponds to the arrangement mode of the plurality of second threaded holes of at least one base.

[0017] Optionally, the clamping part comprises a hoisting hole penetratingly arranged, which is used for hoisting the tee pipe machining clamp.

[0018] The utility model discloses beneficial effect is: through three clamping components perpendicularly arranged on the base, a clamping component can correspond to one main pipeline, can realize the synchronous positioning and clamping of three -way pipe fittings three -direction main pipeline, when processing, through horizontal rotation base or horizontal rotation processing machine tool's operation platform, can adjust the processing position of the main pipeline of the processing, make the normal vector of the flange processing surface of main pipeline and the spindle direction of processing machine tool's operation platform parallel, thereby realize the processing of the flange processing surface of three -way pipe fittings three -direction main pipeline of one clamping, effectively reduce the clamping times and cumulative error, improve processing accuracy and efficiency, in addition, as only need horizontal rotation base or horizontal rotation processing machine tool's operation platform, only need to have at least one rotation axis's processing equipment can complete the multi -surface processing, so use relatively cheap and simple operation four -axis processing equipment can satisfy the processing demand, need not utilize the five -axis processing equipment of expensive and high operation difficulty, thereby reduce equipment cost and operation complexity, further improve production efficiency, simultaneously, two first fastening bolts of clamping component can lock the main pipeline of three -way pipe fittings from two sides respectively, ensure that clamping is firm, avoid the displacement caused by vibration in the processing, further improve processing accuracy and security. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the first kind of structure schematic diagram of three -way pipe fittings processing fixture in the utility model embodiment;

[0020] Figure 2 It is the second kind of structure schematic diagram of three -way pipe fittings processing fixture in the utility model embodiment;

[0021] Figure 3 It is one kind of structure schematic diagram of clamping component of three -way pipe fittings processing fixture in the utility model embodiment;

[0022] Figure 4 It is the third kind of structure schematic diagram of three -way pipe fittings processing fixture in the utility model embodiment;

[0023] Figure 5 It is the fourth kind of structure schematic diagram of three -way pipe fittings processing fixture in the utility model embodiment.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] Three -way pipe fittings processing fixture 10;Three -way pipe fittings 11;First virtual plane 12;Base 20;Clamping component 30;Base 31;Clamping part 32;First through -hole 33;First threaded hole 34;First fastening plane 35;U -shaped groove 36;First fastening bolt 40;Second fastening bolt 50;Buffer part 60;First through -hole 71;First screw 72;Second positioning hole 73;First positioning rod 74;Redundant hole 80;Second through -hole 81;Third positioning hole 82;Hoisting hole 90. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, understandable and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms, and should not be interpreted as being limited to the embodiments described herein, on the contrary, these embodiments are provided in order to more thoroughly and completely understand the present application. It should be understood that the drawings and embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of protection of the present application.

[0027] The Z-axis in the drawings represents the vertical direction, that is, the up-down position, and the positive direction of the Z-axis represents the upper direction, and the negative direction of the Z-axis represents the lower direction. The plane of the X-axis and the Y-axis in the drawings represents the horizontal plane, and any direction on the horizontal plane is the horizontal direction. It should be noted that the meanings of the aforementioned Z-axis, Y-axis and X-axis are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, structure and operation, and therefore cannot be understood as limiting the present application.

[0028] The term "comprising" and its variants used herein are open-ended, i.e., "including but not limited to"; the term "based on" is "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Related definitions of other terms will be given in the following description. It should be noted that the "first", "second", etc. concepts mentioned in the present application are only used to distinguish different devices, modules or units, and are not intended to limit the functions performed by these devices, modules or units or their mutual dependence.

[0029] It should be noted that the modification of "one" or "multiple" in the present application is illustrative and not limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0030] In the technical field of three-way pipe fitting machining, due to the special structure of the three-way pipe fitting, positioning deviation often occurs due to unstable clamping during the machining process, affecting the machining precision and efficiency. At present, the existing clamps mostly adopt the method of clamping a single main pipe to machine the flange surface of the main pipe, and then clamping the other main pipe after machining is completed, which leads to complicated process, multiple clamping times, easy to cause cumulative error, and low machining efficiency.

[0031] The utility model provides a three -way pipe fitting processing clamp 10 for above -mentioned relevant technique exists question, provide a three -way pipe fitting processing clamp 10, combine Figures 1 to 5 As shown in a three -way pipe fitting processing clamp 10, including base 20 and three clamping assemblies 30, three clamping assemblies 30 are vertically arranged on the base 20, three clamping assemblies 30 are used to correspond to clamp the three main pipes of three -way pipe fitting 11, wherein the clamping assembly 30 includes base 31, two interval arrangement's clamping part 32 of the one end of base 31 away from base 20 and two first fastening bolts 40, the base 31 and two clamping part 32 enclose the U -shaped groove 36 for supporting the main pipe of three -way pipe fitting 11, two first fastening bolts 40 are in one -to -one correspondence with two clamping part 32 threadedly matched, first fastening bolt 40 penetrates corresponding clamping part 32, and two first fastening bolts 40 can be relative clamping part 32 and spin in, to clamp the main pipe in U -shaped groove 36.

[0032] Through three clamping assemblies 30 vertically arranged on the base 20, one clamping assembly 30 can correspond to one main pipe, and synchronous positioning and clamping of three -way pipe fitting 11 three -direction main pipe can be realized, when processing, through horizontal rotation base 20 or horizontal rotation processing machine bed's operating platform, the processing position of the main pipe to be processed can be adjusted, the normal vector of the flange surface of the main pipe is parallel with the spindle direction of the operating platform of the processing machine bed, so that the processing of the flange surface of three -way pipe fitting 11 three -direction main pipe is completed once clamping, effectively reduces the clamping frequency and cumulative error, improves the processing precision and efficiency, in addition, since only need horizontal rotation base 20 or horizontal rotation processing machine bed's operating platform, only need to have at least one rotation axis processing equipment can complete the multi -surface processing, so that the relatively cheap and simple operation four -axis processing equipment can satisfy the processing demand, need not use expensive and high operation difficulty five -axis processing equipment, thereby reducing equipment cost and operation complexity, further improve production efficiency, simultaneously, the U -shaped groove 36 of clamping assembly 30 can load and limit the main pipe, and two first fastening bolts 40 can lock the side wall of the main pipe from both sides, ensure that the main pipe is stably clamped and stably in the U -shaped groove 36, avoid displacement due to vibration in the processing process, further improve the processing precision and safety.

[0033] In some embodiments, please refer to Figure 2 , Figure 3The clamping assembly 30 further comprises a second fastening bolt 50; the base 31 is provided with a first through hole 33 penetrating horizontally, and the inner wall of the first through hole 33 away from the side of the base 20 is provided with a first threaded hole 34, which is in communication with the U-shaped groove 36; wherein the second fastening bolt 50 is arranged in the first threaded hole 34 and is in threaded cooperation with the first threaded hole 34, and the second fastening bolt 50 can be screwed away from the side of the base 31 to the base 20 to abut against the main pipeline in the U-shaped groove 36.

[0034] The second fastening bolt 50 exerts force on the side wall of the base 31 perpendicular to the base 20, and forms a three-sided clamping structure with the two first fastening bolts 40, thereby limiting the main pipeline in a three-dimensional clamping space, and improving the clamping stability; the moving direction of the second fastening bolt 50 is perpendicular to the axial direction of the main pipeline, and the threaded cooperation design can accurately control the clamping force of the second fastening bolt 50, adapt to main pipelines with different wall thicknesses, and avoid displacement caused by excessive clamping damage or insufficient clamping force.

[0035] In some embodiments, please refer to Figure 3 In the same clamping assembly 30, the two first fastening bolts 40 and the second fastening bolt 50 are arranged in the first virtual plane 12, which is perpendicular to the base 20. This ensures that the force points of the three fastening bolts are in the same plane, avoiding uneven stress and local deformation of the main pipeline caused by scattered force points; the first virtual plane 12 perpendicular to the base 20 is designed to make the clamping force direction and the supporting direction of the main pipeline form a synergy, ensuring that the axis of the main pipeline and the base 20 maintain a preset angle, and ensuring the angle accuracy of the flange surface.

[0036] In some embodiments, please refer to Figure 3 In the same clamping assembly 30, the acute angle between the screwing moving direction of the first fastening bolt 40 and the base 20 is 30°, and the screwing moving direction of the second fastening bolt 50 is perpendicular to the base 20. The acute angle between the moving direction (i.e. the force direction) of the first fastening bolt 40 and the base 20 is represented by θ1, the force directions of the second fastening bolt 50 and the first fastening bolt 40 form a uniform force distribution, the two first fastening bolts 40 form an angle of 120° on the first virtual plane 12, the angle between the two first fastening bolts 40 is represented by θ2, the first fastening bolt 40 and the second fastening bolt 50 form an angle of 120° on the first virtual plane 12, and the angle between the first fastening bolt 40 and the second fastening bolt 50 on the first virtual plane 12 is represented by θ3, which together act on the outer wall of the main pipeline to form a stable and uniform clamping force, effectively avoiding local stress concentration and improving clamping reliability.

[0037] In some embodiments, please refer to Figure 3 The clamping part 32 is provided with a first fastening plane 35 corresponding to the outer side wall surface of the U-shaped groove 36. The first fastening bolt 40 penetrates from the first fastening plane 35 to abut against the main pipe of the tee pipe fitting 11. The first fastening bolt 40 is perpendicular to the first fastening plane 35. The first fastening plane 35 provides a flat reference for bolt installation, ensures the perpendicularity of the first fastening bolt 40, avoids the deviation of the force direction caused by the inclination of the bolt, and ensures that the clamping force accurately acts on the main pipe.

[0038] Specifically, the acute angle between the first fastening plane 35 and the base 20 is 60°.

[0039] In some embodiments, please refer to Figure 3 The tee pipe fitting machining clamp 10 further comprises a buffer part 60. The buffer part 60 is arranged at the end surface of the first fastening bolt 40 close to the tee pipe fitting 11, and the buffer part 60 is also arranged at the end surface of the second fastening bolt 50 close to the tee pipe fitting 11.

[0040] The buffer part 60 directly contacts the surface of the main pipe to avoid hard contact between the metal bolt and the surface of the pipe fitting, effectively preventing surface damage such as pinching and scratching, and is especially suitable for tee pipe fittings 11 with high surface precision requirements or soft materials (such as aluminum alloy and stainless steel). The buffer part 60 has a certain elasticity and can compensate for the slight unevenness of the surface of the main pipe, making the clamping force more uniform, absorbing part of the vibration during machining, and further improving the clamping stability.

[0041] Specifically, the material of the buffer part 60 can be a non-metallic material such as a rubber pad or a nylon pad, which has good wear resistance and resilience and can effectively protect the surface of the pipe fitting.

[0042] In some embodiments, please refer to Figure 4 The base 31 is provided with a plurality of second threaded holes on the end surface close to the base 20. The base 20 is provided with a plurality of first through holes 71 penetrating the base 20 in the thickness direction of the base 20. The tee pipe fitting machining clamp 10 further comprises a plurality of first screws 72. The plurality of first screws 72, the plurality of first through holes 71, and the plurality of second threaded holes are one-to-one corresponding. The first screw 72 penetrates the first through hole 71 and is screwed with the second threaded hole.

[0043] The second threaded hole, which is not shown in the figure, is easier to understand. Through the cooperation of the screw rod and the threaded hole, the detachable fixing of the base 31 and the base table 20 is realized, which facilitates the assembly, disassembly and maintenance of the clamp. The detachable design allows the clamp to replace a clamping assembly 30 individually according to needs, without the need for overall replacement, thereby reducing maintenance costs. The corresponding design of multiple threaded holes and through holes ensures that the fixing points of the base 31 on the base table 20 are evenly distributed, avoiding deformation of the base 31 caused by excessive local stress, and ensuring the positioning accuracy of the clamping assembly 30. The threaded connection structure can adjust the fit of the base 31 and the base table 20, ensuring that the bases 31 of the three clamping assemblies 30 are on the same horizontal plane, providing a reference for the synchronous positioning of the tee pipe fitting 11.

[0044] In some embodiments, referring to Figure 4 , the base 31 is also provided with a plurality of first positioning holes on the end face close to the base table 20; the surface of the base table 20 close to the base 31 is provided with a plurality of second positioning holes 73; wherein the tee pipe fitting machining clamp 10 further comprises a plurality of first positioning rods 74, the plurality of first positioning holes, the plurality of second positioning holes 73 and the plurality of first positioning rods 74 correspond one-to-one, a part of the first positioning rod 74 is arranged in the first positioning hole, and another part of the first positioning rod 74 is arranged in the second positioning hole 73. The first positioning hole, which is not shown in the figure, is easier to understand. The cooperation of the positioning rod and the positioning hole realizes the rapid and accurate positioning of the base 31 on the base table 20, avoids the positional deviation of the three clamping assemblies 30 caused by the offset of the base 31 during installation, ensures the accurate alignment of the three clamping assemblies 30 and the three main pipes of the tee pipe fitting 11, and improves the positioning efficiency and accuracy.

[0045] In some embodiments, referring to Figure 5 , the base table 20 is also provided with at least one set of redundant holes 80, the orthogonal projection of the redundant hole 80 on the base table 20 is located outside the orthogonal projection of the clamping assembly 30 on the base table 20, the redundant hole 80 comprises a plurality of second through holes 81, the second through hole 81 penetrates the base table 20 along the thickness direction of the base table 20; wherein the arrangement mode of the plurality of second through holes 81 in at least one set of redundant holes 80 corresponds to the arrangement mode of the plurality of second threaded holes of at least one base 31.

[0046] The redundant hole 80 provides multiple installation positions for the base 31, allowing the clamping assembly 30 to move horizontally along the base table 20, adapting to different models of tee pipe fittings 11 with different parameters such as the spacing and angle of the three main pipes, and improving the versatility and application range of the clamp. There is no need to design a clamp for different models of tee pipe fittings 11, thereby reducing equipment investment costs.

[0047] Specifically, referring to Figure 5The redundant holes 80 also include a plurality of third positioning holes 82, and the arrangement of the plurality of third positioning holes 82 in at least one set of the redundant holes 80 corresponds to the arrangement of the plurality of first positioning holes of at least one base 31. Similarly, the third positioning holes 82 can correspond to the first positioning holes of the base 31. When the clamping component 30 needs to be positioned in the area of ​​the redundant holes 80, the clamping component 30 can be accurately positioned in the area of ​​the redundant holes 80 by simultaneously inserting the first positioning rod 74 into the first positioning hole and the third positioning hole 82.

[0048] In some embodiments, please refer to the following for details. Figure 1 , Figure 5 The clamping part 32 includes a through-hole 90 for hoisting the tee fitting processing fixture 10. The hoisting hole 90 provides a convenient interface for the handling and installation of the fixture, allowing the fixture to be quickly hoisted to the machine tool operating table or storage location using a lifting device, reducing the intensity of manual handling, improving operational safety, and increasing overall processing efficiency.

[0049] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A tee fitting machining fixture, characterized by, The three-way pipe machining clamp (10) comprises a base (20), three clamping assemblies (30) vertically arranged on the base (20), and three main pipes of the three-way pipe (11) are clamped by the three clamping assemblies (30). The clamping assembly (30) comprises a base (31), two clamping parts (32) arranged at intervals on one end of the base (31) away from the base (20), and two first fastening bolts (40), the base (31) and the two clamping parts (32) form a U-shaped groove (36) for supporting the main pipe, and the two first fastening bolts (40) are threadedly connected with the two clamping parts (32) one by one, the first fastening bolt (40) penetrates the corresponding clamping part (32), and the two first fastening bolts (40) can be screwed into the clamping part (32) to clamp the main pipe in the U-shaped groove (36). The clamping assembly (30) further comprises a second fastening bolt (50); The base (31) is provided with a first through hole (33) penetrating horizontally, and a first threaded hole (34) is arranged on the inner wall of the side of the first through hole (33) away from the base (20), and the first threaded hole (34) is in communication with the U-shaped groove (36); 2. The tee fitting machining clamp of claim 1, wherein, The second fastening bolt (50) is arranged in the first threaded hole (34) and threadedly connected with the first threaded hole (34), and the second fastening bolt (50) can be screwed into the base (31) away from the base (20) to abut against the main pipe in the U-shaped groove (36). In the same clamping assembly (30), the two first fastening bolts (40) and the second fastening bolt (50) are arranged in a first virtual plane (12), and the first virtual plane (12) is perpendicular to the base (20). In the same clamping assembly (30), the acute angle between the screwing direction of the first fastening bolt (40) and the base (20) is 30°, and the second fastening bolt (50) is arranged vertically to the base (20).

3. The tee fitting machining clamp of claim 2, wherein, The clamping part (32) is provided with a first fastening plane (35) corresponding to the outer side wall surface of the U-shaped groove (36), and the first fastening bolt (40) penetrates the first fastening plane (35) to abut against the corresponding main pipe; 4. The tee fitting machining clamp of claim 3, wherein, The first fastening bolt (40) is perpendicular to the first fastening plane (35).

5. The tee fitting machining clamp of claim 3, wherein, The three-way pipe machining clamp (10) further comprises a buffer part (60), the buffer part (60) is arranged on the end surface of the first fastening bolt (40) close to the three-way pipe (11), and the buffer part (60) is also arranged on the end surface of the second fastening bolt (50) close to the three-way pipe (11). The end surface of the base (31) close to the base (20) is provided with a plurality of second threaded holes; 6. The tee fitting machining clamp of claim 2, wherein The base (20) is provided with a plurality of first through holes (71) penetrating the base (20) along the thickness direction of the base (20).

7. The tee fitting machining clamp of claim 1, wherein ​ ​ The three-way pipe fitting machining clamp (10) further comprises a plurality of first screws (72), the plurality of first screws (72), the plurality of first through holes (71) and the plurality of second threaded holes are in one-to-one correspondence, the first screw (72) passes through the first through hole (71) and is in threaded connection with the second threaded hole.

8. The tee fitting machining clamp of claim 7, wherein, The base (31) is further provided with a plurality of first positioning holes on the end face close to the base table (20); The base table (20) is further provided with a plurality of second positioning holes (73) on the surface close to the side of the base (31); The three-way pipe fitting machining clamp (10) further comprises a plurality of first positioning rods (74), the plurality of first positioning rods (74), the plurality of first positioning holes and the plurality of second positioning holes (73) are in one-to-one correspondence, a part of the first positioning rod (74) is arranged in the first positioning hole, and another part of the first positioning rod (74) is arranged in the second positioning hole (73).

9. The tee fitting machining clamp of claim 7, wherein, The base table (20) is further provided with at least one set of redundant holes (80), the orthogonal projection of the redundant hole (80) on the base table (20) is located outside the orthogonal projection of the clamping assembly (30) on the base table (20), the redundant hole (80) comprises a plurality of second through holes (81), and the second through hole (81) penetrates the base table (20) in the thickness direction of the base table (20); The arrangement mode of the plurality of second through holes (81) in at least one set of the redundant holes (80) corresponds to the arrangement mode of the plurality of second threaded holes of at least one base (31).

10. The tee fitting machining clamp of claim 1, wherein, The clamping part (32) comprises a hoisting hole (90) penetratingly arranged, used for hoisting the three-way pipe fitting machining clamp (10).

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