Four-way pipe joint turning tool

Abstract

The utility model discloses a four-way pipe joint turning tool, and belongs to the technical field of lathe clamps. The tool is cylindrical and comprises a clamping block A and a clamping block B. When the clamping block B and the clamping block A are coaxially arranged, a crack exists between the clamping block B and the clamping block A, and the crack penetrates through the whole tool in the axial direction. After the four-way pipe joint is clamped through the clamping block A and the clamping block B, the four-way pipe joint and the tool are clamped on a three-jaw chuck or a four-jaw chuck on a lathe spindle together, and due to the fact that the tool is cylindrical, tool alignment and self-centering can be achieved through the three-jaw chuck or the four-jaw chuck; and the clamping block B and the clamping block A do not need to be connected through connecting pieces such as screws, so that the clamping efficiency of the tool on the four-way pipe joint is improved.

Description

Technical Field

[0001] The utility model relates to a machining tool for a four-way pipe joint, belonging to the technical field of lathe clamps. Background Art

[0002] In the field of aircraft engines, the cross-type pipe joint can play the role of flow distribution and collection, realize the direction change of the pipeline, and improve the flexibility of the pipeline system. The dimensional accuracy of the cross-type pipe joint will directly affect the assembly quality and the reliability and safety of the engine operation. Figures 1 to 3 As shown, two ends of the four-way pipe joint to be processed are straight-through, and the center lines of the other two ends are coplanar and perpendicular to the straight-through. The two ends of the straight-through can directly clamp the blank to process the reference surface, and the two ends perpendicular to the straight-through cannot be directly processed. The traditional processing method is to use a jacket to clamp the outer circle of the straight-through for processing. This method cannot guarantee the processing accuracy and position, and the processing is complicated and the cost is high.

[0003] The Chinese patent document with publication number CN215090715U discloses a right-angle elbow, tee or cross casting blank turning auxiliary fixture, which is a square body, one opposite surface of the square body auxiliary fixture is a clamping surface, and the two clamping surfaces are respectively provided with vertically staggered positioning strips. The square body auxiliary fixture is formed by two mirror-image components connected by a connecting piece, and the joint of the two components forms a right-angle elbow, tee and / or cross casting blank or a right-angle elbow. The accommodating cavity of the elbow and tee casting blanks, the two ends of the right-angle elbow, tee or cross casting blanks are respectively exposed on the adjacent two surfaces of the square auxiliary clamp, the two axes of the right-angle elbow, tee or cross casting blanks respectively form a common surface with the center lines of the two positioning strips, the common surface is perpendicular to the clamping surface, and the lathe chuck clamps the two positioning strips through two opposite claws to clamp the auxiliary clamp; the clamp has a simple structure, low production cost, convenient clamping and fixing, easy alignment and positioning, and easy use.

[0004] However, the fixture has the following shortcomings:

[0005] First, two mirror-image components must be connected through two connectors to lock the parts to be processed. Tightening and loosening the connectors will reduce the clamping efficiency of the fixture.

[0006] Second, when the fixture is clamped to the lathe chuck, it is necessary to align the fixture through one of the positioning bars, which will also reduce the clamping efficiency of the fixture. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides a machining tool for a four-way pipe joint.

[0008] The utility model is realized through the following technical solutions:

[0009] A tool for machining a four-way pipe joint is provided. The tool is cylindrical and comprises a clamping block A and a clamping block B. When the clamping block B is coaxially arranged with the clamping block A, a gap exists between the clamping block B and the clamping block A, and the gap runs through the entire tool along the axial direction.

[0010] A rectangular exposed slot A is axially provided on one side of the clamping block A close to the clamping gap, a small end positioning blind hole is radially provided on the bottom surface of the rectangular exposed slot A, a first head positioning slot A is radially provided on one side surface of the rectangular exposed slot A, and a second head positioning slot A is radially provided on the other side surface.

[0011] A rectangular exposed slot B is axially provided on one side of the clamping block B near the clamping gap at a position corresponding to the rectangular exposed slot A, a large end positioning blind hole is radially provided on the bottom surface of the rectangular exposed slot B at a position corresponding to the small end positioning blind hole, a first head positioning slot B is radially provided on one side of the rectangular exposed slot B at a position corresponding to the first head positioning slot A, and a second head positioning slot B is radially provided on the other side at a position corresponding to the second head positioning slot A.

[0012] The length of the clamp block B is consistent with that of the clamp block A.

[0013] The gap is offset relative to the central axis of the tooling.

[0014] The width of the slit is greater than 0.5 mm.

[0015] The beneficial effect of the utility model is that after the four-way pipe joint is clamped by the clamping block A and the clamping block B, the four-way pipe joint and the tooling are clamped together on the three-jaw chuck or four-jaw chuck on the main shaft of the lathe; because the tooling is cylindrical, the three-jaw chuck or four-jaw chuck can be used to realize tooling alignment and self-centering; and the clamping block B and the clamping block A do not need to be connected by connecting parts such as screws, thereby improving the clamping efficiency of the tooling for the four-way pipe joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of a four-way pipe joint;

[0017] Figure 2 for Figure 1 Section view along AA;

[0018] Figure 3 for Figure 1 Sectional view along DD;

[0019] Figure 4 It is a schematic diagram of the structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the main structure of the clamping block A of the utility model;

[0021] Figure 6 It is a schematic diagram of the top view of the clamping block A of the utility model;

[0022] Figure 7 This is a schematic diagram of the main structure of the clamping block B of the utility model;

[0023] Figure 8 for Figure 7 A top view of

[0024] Fig. 9 It is a three-dimensional structural schematic diagram of the utility model when the first end of the clamping four-way pipe joint is processed;

[0025] Fig.10 This is a schematic diagram of the main structure of the utility model when clamping a four-way pipe joint and processing the first end;

[0026] Fig.11 for Fig.10 Sectional view along BB;

[0027] Fig.12 for Fig.11 Sectional view along CC;

[0028] Fig.13 It is a three-dimensional structural schematic diagram of the utility model when the second end is processed by clamping the four-way pipe joint.

[0029] In the figure: 1-four-way pipe joint, 10-straight-through, 11-first head, 12-second head, 2-clamp A, 20-rectangular exposed notch A, 21-small end positioning blind hole, 22-second head positioning groove A, 23-first head positioning groove A, 3-clamp B, 30-rectangular exposed notch B, 31-large end positioning blind hole, 32-second head positioning groove B, 33-first head positioning groove B, 4-slit. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0031] like Figures 1 to 13 As shown, a four-way pipe joint turning tooling of the utility model is cylindrical, and includes a clamp block A2 and a clamp block B3. When the clamp block B3 is coaxially arranged with the clamp block A2, there is a gap 4 between the clamp block B3 and the clamp block A2, and the gap 4 runs through the entire tooling along the axial direction. When in use, after the four-way pipe joint 1 is clamped by the clamp block A2 and the clamp block B3, the four-way pipe joint 1 and the tooling are clamped together to the three-jaw chuck or four-jaw chuck on the main shaft of the lathe. Since the tooling is cylindrical, the three-jaw chuck or four-jaw chuck can be used to realize the tooling alignment and self-centering, and the clamp block B3 and the clamp block A2 do not need to be connected by connecting parts such as screws, thereby improving the clamping efficiency of the tooling on the four-way pipe joint 1.

[0032] A rectangular exposed slot A20 is axially provided on one side of the clamping block A2 close to the clamping gap 4, a small end positioning blind hole 21 is radially provided on the bottom surface of the rectangular exposed slot A20, a first head positioning slot A23 is radially provided on one side surface of the rectangular exposed slot A20, and a second head positioning slot A22 is radially provided on the other side surface.

[0033] A rectangular exposed slot B30 is axially provided on one side of the clamping block B3 close to the clamping gap 4 at a position corresponding to the rectangular exposed slot A20, a large end positioning blind hole 31 is radially provided on the bottom surface of the rectangular exposed slot B30 at a position corresponding to the small end positioning blind hole 21, a first head positioning slot B33 is radially provided on one side of the rectangular exposed slot B30 at a position corresponding to the first head positioning slot A23, and a second head positioning slot B32 is radially provided on the other side at a position corresponding to the second head positioning slot A22.

[0034] The clamp block B3 has the same length as the clamp block A2.

[0035] The clamping gap 4 is offset relative to the central axis of the tooling.

[0036] The width of the slit 4 is greater than 0.5 mm.

[0037] The working principle or use process of the four-way pipe joint turning tool described in the utility model is as follows:

[0038] like Figures 9 to 12 As shown, after the reference surfaces are machined at both ends of the straight-through 10 of the four-way pipe joint 1, the clamp block A2 and the clamp block B3 are used to hold the four-way pipe joint 1, and the small end face and the outer circle of the straight-through 10 are limited by the small end positioning blind hole 21 on the clamp block A2, and the large end face and the outer circle of the straight-through 10 are limited by the large end positioning blind hole 31 on the clamp block B3, so that the central axis of the first head 11 on the four-way pipe joint 1 intersects with the central axis of the tooling. At the same time, the clamp block A2 The second head positioning groove A22 cooperates with the second head positioning groove B32 on the clamping block B3 to limit the second head 12 on the cross-way pipe joint 1, so that the central axis of the first head 11 on the cross-way pipe joint 1 coincides with the central axis of the tooling, and then the tooling and the cross-way pipe joint 1 are clamped together on the three-jaw chuck or four-jaw chuck on the lathe spindle, and the self-centering function of the three-jaw chuck or four-jaw chuck is used to ensure that the central axis of the tooling and the central axis of the first head 11 coincide with the central axis of the lathe spindle. Next, the lathe can be started to process the outer circle and external thread of the first head 11.

[0039] like Fig.13As shown, after the processing of the first head 11 is completed, the tooling and the four-way pipe joint 1 are removed from the three-jaw chuck or the four-jaw chuck. Similarly, the small end face and the outer circle of the straight-through 10 are limited by the small end positioning blind hole 21 on the clamping block A2, and the large end face and the outer circle of the straight-through 10 are limited by the large end positioning blind hole 31 on the clamping block B3. The first head 11 on the four-way pipe joint 1 is limited by the first head positioning groove A23 on the clamping block A2 and the first head positioning groove B33 on the clamping block B3. Then, the tooling and the four-way pipe joint 1 are clamped together on the three-jaw chuck or the four-jaw chuck on the main shaft of the lathe, and the outer circle of the second head 12 can be processed.

Claims

1. A tool for turning a cross-way pipe joint, characterized in that: The tooling is cylindrical and comprises a clamping block A (2) and a clamping block B (3). When the clamping block B (3) is coaxially arranged with the clamping block A (2), a gap (4) is present between the clamping block B (3) and the clamping block A (2), and the gap (4) runs through the entire tooling along the axial direction.

2. The tooling for machining a cross-way pipe joint according to claim 1, characterized in that: A rectangular exposed slot A (20) is axially provided on one side of the clamping block A (2) close to the clamping gap (4), a small end positioning blind hole (21) is radially provided on the bottom surface of the rectangular exposed slot A (20), a first head positioning slot A (23) is radially provided on one side surface of the rectangular exposed slot A (20), and a second head positioning slot A (22) is radially provided on the other side surface.

3. The tooling for machining a cross-way pipe joint according to claim 2, characterized in that: A rectangular exposed slot B (30) is axially provided on one side of the clamping block B (3) close to the clamping gap (4) at a position corresponding to the rectangular exposed slot A (20); a large end positioning blind hole (31) is radially provided on the bottom surface of the rectangular exposed slot B (30) at a position corresponding to the small end positioning blind hole (21); a first head positioning slot B (33) is radially provided on one side of the rectangular exposed slot B (30) at a position corresponding to the first head positioning slot A (23); and a second head positioning slot B (32) is radially provided on the other side at a position corresponding to the second head positioning slot A (22).

4. The tooling for machining a cross-way pipe joint according to claim 1, characterized in that: The clamping block B (3) is the same length as the clamping block A (2).

5. The tooling for machining a cross-type pipe joint according to claim 1, characterized in that: The clamping gap (4) is offset relative to the central axis of the tooling.

6. The tooling for machining a cross-type pipe joint according to claim 1, characterized in that: The width of the slit (4) is greater than 0.5 mm.

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