External thread tee clamp device

Abstract

This invention provides a clamping device for an external threaded tee, comprising: a transition plate connected to a lathe spindle; two side plates symmetrically mounted on the transition plate; a positioning bracket disposed between the two side plates and rotatably connected to the two side plates via a rotating assembly, wherein the positioning bracket is symmetrical with respect to the midpoint of the two side plates; and a clamping device mounted on the positioning bracket, the clamping device being used to fix the external threaded tee on the positioning bracket. This invention saves clamping time and avoids positional errors caused by multiple clamping operations.

Description

Technical Field

[0001] This invention relates to the field of mechanical processing and manufacturing, and in particular to an external thread tee clamp device. Background Technology

[0002] External thread tees are a widely used pipe fitting. Their manufacturing process requires machining the connecting threads on each joint, typically necessitating multiple clamping and machining operations for each threaded joint. This not only hinders production efficiency but also increases positional errors in each joint due to repeated clamping. Repeated clamping and positioning not only increases production costs but also leads to quality losses due to dimensional inaccuracies and scrapping. Utility Model Content

[0003] To address the shortcomings of the existing technology, this invention provides an external thread tee clamp device, comprising:

[0004] Transition plate, lathe spindle connection;

[0005] Two side plates are symmetrically installed on the transition plate;

[0006] A positioning bracket is disposed between the two side plates and is rotatably connected to the two side plates via a rotating assembly, and the positioning bracket is symmetrical with respect to the midpoint of the two side plates.

[0007] A clamping device is installed on the positioning bracket, and the clamping device is used to fix the external thread tee on the positioning bracket.

[0008] In some embodiments, the positioning bracket includes:

[0009] The first connector is attached to one side panel;

[0010] The second connector is connected to the other side plate, and the first connector and the second connector are symmetrically arranged.

[0011] In some embodiments, the rotating component includes:

[0012] Two bearings are mounted on the first connector and the second connector, respectively; the two bearings are coaxially arranged, and the axes of the two bearings pass through the axis of the lathe spindle and are perpendicular to the axis of the lathe spindle.

[0013] Two rotating shafts are interference-fitted with the two bearings. Each rotating shaft passes through the mounting hole of each side plate and the inner ring of the bearing, so as to rotatably connect the first connector and the second connector to the two side plates.

[0014] In some embodiments, an end cap is fixed to a side plate by a first screw to axially limit the rotating shaft, and the end cap is pressed against the rotating shaft by a second screw.

[0015] In some embodiments, the first connector and the second connector are connected to the end of the corresponding side plate away from the transition plate.

[0016] In some embodiments, the positioning bracket includes:

[0017] The third connector is connected at both ends to the bottom of the first connector and the bottom of the second connector, respectively.

[0018] The positioning seat, installed on the third connector, is used to place the connector of the external thread tee.

[0019] In some embodiments, the positioning seat includes two symmetrically arranged protrusions with a concave portion between them, the concave portion being used to place the connector of the external thread tee;

[0020] Each of the protrusions is connected to the third connector by a third screw, and the concave portion is connected to the third connector by a flat key.

[0021] In some embodiments, the transition plate and the side plate are positioned by a cylindrical pin and fastened by a fourth screw, wherein the cylindrical pin is interference-fitted with the transition plate and clearance-fitted with the side plate.

[0022] In some embodiments, the clamping device includes:

[0023] The support plate is connected to the positioning bracket by the fifth screw.

[0024] The pressure head is connected to the support plate via a sixth screw, and the pressure head is used to clamp the external thread tee.

[0025] Compared with the prior art, the advantages and beneficial effects of this new technology are as follows:

[0026] This novel external threaded tee clamping device features a transition plate connected to the lathe spindle, with two side plates symmetrically mounted on the transition plate. A positioning bracket is positioned between the two side plates and rotatably connected to them via a rotating assembly, with the positioning bracket symmetrical to the midpoint of the two side plates. A clamping device is mounted on the positioning bracket to fix the external threaded tee to it. Furthermore, this clamping device requires only one clamping operation during the external threaded tee machining process, saving significant clamping time and avoiding positional errors caused by multiple clamping operations. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1A-1B A schematic diagram of the external thread tee clamp device provided in one embodiment of the present invention is shown;

[0029] Figure 2A-2C A schematic diagram of the positioning bracket assembly is shown;

[0030] Figure 3 A schematic diagram of the specific structure of the positioning bracket is shown;

[0031] Figure 4 A schematic diagram showing the bearing pre-installed in the positioning bracket is shown;

[0032] Figures 5A-5B A schematic diagram of the clamping device assembly is shown;

[0033] Figure 6 A schematic diagram of the assembly of the transition plate and the side plate is shown.

[0034] The reference numerals in the attached figures are as follows:

[0035] 1-Transition plate;

[0036] 2-Side panels;

[0037] 21-Side panel one;

[0038] 22-Side panel two;

[0039] 3-Positioning bracket;

[0040] 31-First connector;

[0041] 32 - Second connector;

[0042] 33 - Third connector;

[0043] 34-Positioning seat;

[0044] 341 - Protrusion;

[0045] 342-Concave face;

[0046] 4-Clamping device;

[0047] 41-Support plate;

[0048] 42 - Indenter;

[0049] 5-Rotating assembly;

[0050] 51-Bearing;

[0051] 511-Bearing 1;

[0052] 512-Bearing II;

[0053] 52 - Rotation axis;

[0054] 521-Rotation Axis One;

[0055] 522-Rotation Shaft Two;

[0056] 53-End cap;

[0057] 6-External dental tee;

[0058] 61-Connector;

[0059] 71 - First screw;

[0060] 72 - Second screw;

[0061] 73 - Third screw;

[0062] 74 - Fourth screw;

[0063] 75 - Fifth screw;

[0064] 76 - Sixth screw;

[0065] 8-flat key;

[0066] 9-Cylindrical pin. Detailed Implementation

[0067] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but this is not intended to limit the scope of protection of the appended claims.

[0068] Certain terms are used in this specification and the following claims to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and the following claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout this specification and the following claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0069] It should be noted that in the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", as well as "about", "approximately", "substantially", "left and right", etc., indicating the orientation or positional relationship or parameters, are all based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] See Figure 1A-1B , Figure 2A-2C As shown, Figure 1A-1B A schematic diagram of the external thread tee clamp device according to an embodiment of the present invention is shown. (Reference) Figure 2A-2C This is a schematic diagram of the positioning bracket assembly. One embodiment of this invention provides an external threaded tee clamping device, including: a transition plate 1, two side plates 2, a positioning bracket 3, and a clamping device 4. The transition plate 1 is connected to a lathe spindle; the two side plates 2, including side plate one 21 and side plate two 22, are symmetrically mounted on the transition plate 1; the positioning bracket 3 is disposed between the two side plates 2 and rotatably connected to the two side plates 2 via a rotating assembly 5, and the positioning bracket 3 is symmetrical with respect to the midpoint of the two side plates 2; the clamping device 4 is mounted on the positioning bracket 3, and the clamping device 4 is used to fix the external threaded tee 6 on the positioning bracket 3. In this embodiment, the positioning bracket 3 rotates freely around the rotating assembly 5 without jamming; the positioning bracket 3 and the side plates 2 are clearance-fitted to ensure that the positioning bracket 3 does not move left or right during rotation.

[0071] Further reference Figure 2A-2C ,as well as Figure 3 As shown, Figure 3 A schematic diagram of the specific structure of the positioning bracket is shown. In one embodiment, the positioning bracket 3 includes: a first connector 31, a second connector 32, a third connector 33, and a positioning seat 34. The first connector 31 is connected to side plate 21, and the second connector 32 is connected to side plate 22, with the first connector 31 and the second connector 32 arranged symmetrically. The two ends of the third connector 33 are connected to the bottom of the first connector 31 and the bottom of the second connector 32, respectively. The positioning seat 34 is mounted on the third connector 33, specifically positioned at the center of the third connector 33, for placing the connector 61 of the external thread tee 6.

[0072] In one embodiment, reference Figure 2C As shown, the first connector 31 and the second connector 32 are respectively connected to the side plate 21 and the side plate 2 at the end away from the transition plate 1.

[0073] In one embodiment, further referring to Figure 3, the positioning seat 34 includes two symmetrically arranged protrusions 341, with a concave portion 342 between the two protrusions 341. The concave portion 342 is used to accommodate the connector 61 of the external thread tee 6. Each of the protrusions 341 is connected to the third connector 33 by a third screw 73 (e.g., an internal hex screw), and the concave portion 342 is connected to the third connector 33 by a flat key 8. The flat key 8 provides positioning, and the third screws 73 on both sides are tightened, with the positioning seat 34 and the flat key 8 having a clearance fit. The arcuate contour of the concave portion 342 matches the outer circle of the connector 61, and the protrusions 341 on both sides restrict the radial movement of the connector.

[0074] Further reference Figure 1A , Figure 2A As shown, and Figure 4 As shown, Figure 4 A schematic diagram of a bearing pre-installed on a positioning bracket is shown. In one embodiment, the rotating assembly 5 includes: two bearings 51 (e.g., angular contact ball bearings) and two rotating shafts 52, wherein bearing one 511 is mounted on the first connecting member 31, and bearing two 512 is mounted on the second connecting member 32; and bearing one 511 and bearing two 512 are coaxially arranged, and the axes of bearing one 511 and bearing two 512 pass through the axis of the lathe spindle and are perpendicular to the axis of the lathe spindle. The two rotating shafts 52 are interference-fitted with the two bearings 52, and the side plate 2 is clearance-fitted with the rotating shafts 52. Rotating shaft one 521 passes through the mounting hole of side plate one 21 and the inner ring of bearing one 511 to rotatably connect the first connecting member 31 to the side plate one 21, and rotating shaft two 522 passes through the mounting hole of side plate two 22 and the inner ring of bearing two 512 to rotatably connect the second connecting member 32 to the side plate two 22. In this embodiment, the positioning bracket 3 can rotate freely around the rotation axis 52 without any jamming; the positioning bracket 3 and the side plate 2 are fitted with a clearance to ensure that the positioning bracket 3 cannot move left or right when rotating.

[0075] Further reference Figure 1A , Figure 2A , Figure 2B As shown, in some embodiments, the end cap 53 is fixed to the side plate 2 by a plurality of first screws 71 (e.g., hex socket screws) to axially limit the rotating shaft 52; and second screws 72 (e.g., hex socket screws) pass through the end cap 53 and press against the rotating shaft 52.

[0076] In some embodiments, reference Figure 1B , Figures 5A-5B As shown, Figures 5A-5BA schematic diagram of the clamping device assembly is shown. The clamping device 4 includes: a support plate 41 and a pressure head 42. The support plate 41 is connected to the positioning bracket 3 by a fifth screw 75 (e.g., an internal hex screw), and the support plate 41 is tightened onto the positioning bracket 3 with the fifth screw 75. The pressure head 42 is connected to the support plate 75 by a sixth screw 76, and the pressure head 42 is used to clamp the external thread tee 6. The sixth screw 76 is screwed onto the support plate 41, and finally the pressure head 42 is screwed onto the sixth screw 76, ensuring that the pressure head 42 can rotate freely on the sixth screw 76.

[0077] In some embodiments, reference Figure 6 As shown, Figure 6 A schematic diagram of the assembly of the transition plate and the side plate is shown. The transition plate 1 and the side plate 2 are positioned by a cylindrical pin 9 and fastened together by a fourth screw 74, wherein the cylindrical pin 9 is interference-fitted with the transition plate 1 and clearance-fitted with the side plate 2.

[0078] As described above, this novel external thread tee fixture device has a transition plate connected to the lathe spindle, with two side plates symmetrically mounted on the transition plate. A positioning bracket is disposed between the two side plates and rotatably connected to them via a rotating assembly, with the positioning bracket symmetrical to the midpoint of the two side plates. A clamping device is mounted on the positioning bracket to fix the external thread tee onto it. During machining, the external thread tee part is inserted into the positioning bracket, the clamping device fixes the external thread tee, one of the connectors faces the tailstock end of the lathe, and the positioning seat of the positioning bracket holds the tee connector in place, completely fixing it. At this point, the lathe can be started to machine the shape of this connector. After machining, the positioning bracket is rotated, and the next connector can be machined in the same way. This process is repeated three times to complete the machining of all three connectors of the external thread tee. Specifically, the transition plate 1 is directly connected to the lathe spindle, so the central axis of the transition plate is completely coincident with the axis of the lathe spindle. This axis is defined as the spindle axis during machining (denoted as axis A), and all connectors are machined around axis A. The rotating assembly 5 connects the positioning bracket 3 to the two side plates 2 via bearings 51 and rotating shaft 52. Bearing 1 511 and bearing 2 512 are coaxially arranged, and the axes of bearing 1 and bearing 2 pass through the axis of the lathe spindle and are perpendicular to the axis of the lathe spindle. That is, the axis of the rotating shaft (denoted as B-axis) intersects and is perpendicular to the axis of the spindle (A-axis) in space, and the intersection point is denoted as point O (the intersection point of the rotating shaft and the spindle). The first connecting piece 31 and the second connecting piece 32 are symmetrically connected to side plate 1 21 and side plate 2 22, and the two are symmetrically connected by the third connecting piece 33. The positioning seat 34 is installed at the center of the third connecting piece 33 and is positioned by the flat key 8. Since the entire positioning bracket is symmetrical with respect to the B-axis, the center of the positioning seat 34 (denoted as point P) must be located on the axis of the rotating shaft (B-axis). When the positioning bracket 3 rotates around the rotation axis (B-axis), the positioning seat 34 rotates synchronously around the B-axis with the positioning bracket, and its center point P is always on the B-axis. Since the axis of the connector 61 passes through point P, and point P is on the B-axis, and the B-axis intersects the A-axis at point O, the axis of the connector must pass through point O. External thread tees usually have three connectors at angles to each other. During machining: after the initial clamping, the axis of the first connector coincides with the A-axis (facing the tailstock end of the lathe, at this time the axis is the A-axis, passing through point O); rotate the positioning bracket 3 to the position of the second connector. Since the axis of the connector passes through point O, and the B-axis is perpendicular to the A-axis, the axis of the second connector rotates around point O to a new angle, but still passes through point O; similarly, the axis of the third connector still passes through point O after rotation. Therefore, the axes of all three connectors will pass through the intersection point O of the fixture rotation axis and the spindle, and their positional relationship relative to the A-axis (spindle) is precisely controlled by the rotation angle, thereby ensuring the positional accuracy of the three connectors.

[0079] Therefore, the external threaded tee clamping device only needs to be clamped once during the machining of external threaded tees, which can save a lot of clamping time. Furthermore, the axes of all three connectors pass through the intersection of the clamp's rotating axis and the main spindle, so the positional accuracy of the three axes is easily guaranteed, resulting in a significant improvement in quality.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A clamping device for external threaded tees, characterized in that, include: Transition plate, lathe spindle connection; Two side plates are symmetrically installed on the transition plate; A positioning bracket is disposed between the two side plates and is rotatably connected to the two side plates via a rotating assembly, and the positioning bracket is symmetrical with respect to the midpoint of the two side plates. A clamping device is installed on the positioning bracket, and the clamping device is used to fix the external thread tee on the positioning bracket.

2. The external thread tee clamp device according to claim 1, characterized in that, The positioning bracket includes: The first connector is attached to one side panel; The second connector is connected to the other side plate, and the first connector and the second connector are symmetrically arranged.

3. The external thread tee clamp device according to claim 2, characterized in that, The rotating component includes: Two bearings are mounted on the first connector and the second connector, respectively; the two bearings are coaxially arranged, and the axes of the two bearings pass through the axis of the lathe spindle and are perpendicular to the axis of the lathe spindle. Two rotating shafts are interference-fitted with the two bearings. Each rotating shaft passes through the mounting hole of each side plate and the inner ring of the bearing, so as to rotatably connect the first connector and the second connector to the two side plates.

4. The external thread tee clamp device according to claim 3, characterized in that, One end cap is fixed to a side plate by a first screw to axially limit the rotation shaft, and the end cap is pressed against the rotation shaft by a second screw.

5. The external thread tee clamp device according to claim 2, characterized in that, The first connector and the second connector are connected to the end of the corresponding side plate away from the transition plate.

6. The external thread tee clamp device according to claim 2, characterized in that, The positioning bracket includes: The third connector is connected at both ends to the bottom of the first connector and the bottom of the second connector, respectively. The positioning seat, installed on the third connector, is used to place the connector of the external thread tee.

7. The external thread tee clamp device according to claim 6, characterized in that, The positioning seat includes two symmetrically arranged protrusions, with a concave portion between the two protrusions. The concave portion is used to place the connector of the external thread tee. Each of the protrusions is connected to the third connector by a third screw, and the concave portion is connected to the third connector by a flat key.

8. The external thread tee clamp device according to claim 1, characterized in that, The transition plate and the side plate are positioned by a cylindrical pin and fastened together by a fourth screw, wherein the cylindrical pin is interference-fitted with the transition plate and clearance-fitted with the side plate.

9. The external thread tee clamp device according to claim 1, characterized in that, The clamping device includes: The support plate is connected to the positioning bracket by the fifth screw. The pressure head is connected to the support plate via a sixth screw.

10. The external thread tee clamp device according to claim 9, characterized in that, The pressure head clamps the external thread tee.

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