A tube expander housing clamp
By designing a expander housing fixture, and utilizing a combination of a fixed base, a holding assembly, and a rotating clamping plate, the problem of fixing the expander housing during multi-part machining on a lathe was solved, achieving stable sequential machining and improving product consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO LIAN YOU PRECISION MFG CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-14
AI Technical Summary
When machining multiple parts of the expander housing on a lathe using existing technology, it is difficult to achieve sequential fixation, resulting in poor product consistency.
A pipe expander housing clamp was designed, including a fixed base, a holding assembly, a driving component, a mounting plate, and a receiving assembly. The pipe expander housing is stably fixed by lifting the holding assembly and rotating the clamping plate.
This achieved stability and precision in the sequential machining of the expander housing on a lathe, improving product consistency.
Smart Images
Figure CN224488445U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of machining fixture technology, and in particular to a pipe expander housing fixture. Background Technology
[0002] A pipe expander is a specialized tool used to enlarge the inner or outer diameter of the end of a metal pipe. It is widely used in pipe connection, sealing, and reinforcement applications.
[0003] Figure 1 A expander housing 1 is shown, comprising a connecting portion 11 and a riser portion 12 connected to the connecting portion 11. The expander housing 1 has a first machining groove 121 on the inner wall of the riser portion 12 and a second machining groove 122 on the outer wall of the riser portion 12. Currently, machining the first machining groove 121, second machining groove 122, and other parts of the expander housing 1 on a lathe requires multiple processes to machine different parts of the expander housing 1 separately. However, to achieve better product consistency, it is necessary to perform sequential machining of multiple parts of the expander housing 1 on a lathe.
[0004] Regarding the aforementioned technologies, a fixture is needed to fix the expander housing during the initial processing. Utility Model Content
[0005] In order to fix the expander housing during the first-order machining of the expander housing on a lathe, this application provides an expander housing fixture.
[0006] The technical solution for a tube expander housing clamp provided in this application is as follows:
[0007] A tube expander housing clamp includes a fixed base, a pressing assembly that is raised and lowered on the fixed base, a driving member that drives the pressing assembly to rise and fall, a mounting plate mounted on the fixed base, and a receiving assembly mounted on the mounting plate for receiving the tube expander housing; the pressing assembly includes a connecting plate connected to the output end of the driving member and a plurality of clamping plates connected to the connecting plate, the top end of the clamping plate extending toward the receiving assembly to form a clamping part for clamping the tube expander housing.
[0008] By adopting the above technical solution, a holding component that can be raised and lowered on the fixed base is set up. The receiving component on the mounting plate can support the expander housing. The holding component can be raised and lowered under the drive of the driving component. The top of the pressing plate of the holding component has a pressing part. The lifting and lowering of the holding component can be used to press or loosen the expander housing, which facilitates the clamping and fixing of the expander housing during the first-stage processing and ensures the stability of the expander housing.
[0009] Optionally, the clamping part is provided with a threaded hole and a clamping head for abutting against the outer wall of the expander housing is threaded in the threaded hole.
[0010] By adopting the above technical solution, the clamping head can be used to contact the outer wall of the expander shell to achieve a more stable and reliable clamping of the expander shell, which is convenient to maintain stability during the first-order processing of the expander shell. At the same time, the clamping head is threaded on the clamping part, with ideal connection strength, and is also convenient for disassembly and replacement.
[0011] Optionally, the receiving component includes a receiving block arranged on the mounting plate and a limiting block disposed on the receiving block and used to abut against the inner wall of the expander housing. The receiving block is provided with a positioning pin that cooperates with the expander housing and a support pin that corresponds to the clamping head and is used to receive the expander housing.
[0012] By adopting the above technical solution, the positioning pin on the receiving block can be used to accurately position the expander shell, the limiting block on the receiving block abuts against the inner wall of the expander shell, and the support nail cooperates with the clamping head to stably fix the expander shell, thereby facilitating its sequential processing.
[0013] Optionally, the connecting plate is provided with a relief groove for the end of the pressing plate to pass through and corresponding to the pressing plate one by one. The connecting plate is provided with a first fixing through hole in the inner wall of the relief groove and a first pin is provided in the first fixing through hole. The pressing plate has a rotating through hole for the first pin to pass through.
[0014] By adopting the above technical solution, the first pin passes through the first fixed through hole on the connecting plate and the rotating through hole on the clamping plate, allowing the clamping plate to rotate around the first pin. This enables flexible adjustment of the clamping plate position to meet the clamping requirements of the expander housing. Furthermore, the clamping plate can rotate outward during the installation and removal of the expander housing, facilitating the placement and removal of the expander housing.
[0015] Optionally, the end of the clamping plate away from the clamping part has a relief slope that is inclined away from the relief groove.
[0016] By adopting the above technical solution, the inclined surface can avoid interference between the clamping plate and the connecting plate during rotation, ensuring smooth rotation of the clamping plate, and thus ensuring the smooth operation of the expansioner housing clamp in fixing the expansioner housing.
[0017] Optionally, the mounting plate has a clearance slot through which the clamping plate passes and corresponds one-to-one with the clamping plate. The mounting plate has a second fixing through hole in the inner wall of the clearance slot and a second pin is provided in the second fixing through hole. The clamping plate has a guide through hole through which the second pin passes.
[0018] By adopting the above technical solution, the clearance groove of the mounting plate provides movement space for the clamping plate. At the same time, with the cooperation of the second pin and the guide hole, the movement of the clamping plate can be guided, ensuring that the clamping plate moves accurately to the appropriate position to clamp the expander housing.
[0019] Optionally, the guide hole includes a first strip hole parallel to the length direction of the clamping plate and a second strip hole communicating with the first strip hole near one end of the connecting plate, the second strip hole being inclined toward the center of the connecting plate.
[0020] By adopting the above technical solution, the guide hole includes a first strip-shaped hole and a second strip-shaped hole communicating with the first strip-shaped hole. The first strip-shaped hole is parallel to the length direction of the clamping plate, and the second strip-shaped hole is inclined towards the center of the connecting plate. This allows the second pin, in conjunction with the second strip-shaped hole, to determine the rotation angle of the clamping plate when the expander housing is clamped, ensuring the clamping head is directly opposite the support pin. Then, the second pin, in conjunction with the first strip-shaped hole, causes the clamping head to press firmly against the expander housing, helping to reduce the probability of the clamping head damaging the expander housing due to friction.
[0021] This allows the clamping plate to move along a specific trajectory during the lifting and lowering process, thereby better achieving the clamping action on the expander housing and facilitating the stable fixing of the expander housing during the first-stage processing.
[0022] Optionally, the top of the fixed base is provided with a positioning groove, the bottom of the mounting plate is provided with a positioning protrusion ring that cooperates with the positioning groove, the fixed base is provided with an internal mounting thread, and the fixed base is provided with a mounting through hole corresponding to the internal mounting thread, and a mounting screw that cooperates with the internal mounting thread is provided in the mounting through hole.
[0023] By adopting the above technical solution, the positioning groove on the top of the fixed base cooperates with the positioning protrusion on the bottom of the mounting plate, and the fixed base and the mounting plate are fixed by threads, which can achieve precise positioning of the mounting plate on the fixed base, and help improve the stability and accuracy of the expansion tube shell during processing.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] 1. A pipe expander housing fixture, comprising a fixed base, a holding assembly, a driving component, a mounting plate, and a receiving assembly, wherein the holding assembly includes a connecting plate connected to the output end of the driving component and a plurality of clamping plates connected to the connecting plate, and the top end of the clamping plate extends toward the receiving assembly to form a clamping part, so that the pipe expander housing can be fixed when the pipe expander housing is machined on a lathe in a first-order manner;
[0026] 2. By setting a receiving block and a limiting block on the receiving component, wherein the receiving block is provided with a positioning pin that cooperates with the expander housing and a support pin that corresponds to the clamping head and is used to receive the expander housing, the clamp can stably fix the expander housing.
[0027] 3. By providing a relief groove in the connecting plate, and providing a first fixed through hole in the inner wall of the relief groove and a first pin in the first fixed through hole, the clamping plate has a rotating through hole through which the first pin passes, so that the clamping plate can rotate around the first pin, thereby flexibly adjusting the position of the clamping plate to meet the clamping requirements of the expander housing. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of a tube expander housing in related technologies.
[0029] Figure 2 This is a schematic diagram of a expander housing clamp and expander housing according to an embodiment of this application.
[0030] Figure 3 This is a cross-sectional schematic diagram of the expander housing clamp in the embodiments of this application.
[0031] Figure 4 This is a partial schematic diagram of the expander housing clamp in the embodiments of this application.
[0032] Figure 5 This is a schematic diagram of the receiving component in the embodiments of this application.
[0033] Explanation of reference numerals in the attached drawings: 1. Expander housing; 11. Connecting part; 12. Riser part; 121. First machining groove; 122. Second machining groove; 2. Fixed base; 21. Positioning groove; 22. Installation internal thread; 3. Pressing assembly; 31. Connecting plate; 311. Relief groove; 312. First fixing through hole; 313. First pin; 32. Pressing plate; 321. Pressing part; 3211. Threaded hole; 3212. Pressing head; 322. Rotating through hole; 323. Leaving bevel; 324. Guide through hole; 3241. First strip hole; 3242. Second strip hole; 4. Driving component; 5. Mounting plate; 51. Positioning protrusion ring; 52. Mounting through hole; 53. Mounting screw; 54. Leaving through groove; 55. Second fixing through hole; 56. Second pin; 6. Receiving assembly; 61. Receiving block; 611. Positioning pin; 612. Support pin; 62. Limiting block. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0035] This application discloses a tube expander housing clamp. (Refer to...) Figure 2The expander housing clamp includes a fixed base 2, a pressing assembly 3 that is raised and lowered on the fixed base 2, a driving component 4 that drives the pressing assembly 3 to rise and fall, a mounting plate 5 mounted on the fixed base 2, and a receiving assembly 6 mounted on the mounting plate 5 for receiving the expander housing. The pressing assembly 3 includes a connecting plate 31 and several clamping plates 32 rotatably connected to the connecting plate 31. In this embodiment, there are three clamping plates 32. The top end of each clamping plate 32 extends towards the receiving assembly 6 to form a clamping portion 321 for clamping the expander housing. In this embodiment, the driving component 4 is a hydraulic cylinder, and the piston rod of the hydraulic cylinder passes through the fixed base 2 and is fixedly connected to the connecting plate 31 of the pressing assembly 3.
[0036] Reference Figure 2 and Figure 3 The connecting plate 31 is provided with a relief groove 311 through which the end of the pressing plate 32 passes. The relief groove 311 corresponds one-to-one with the pressing plate 32. The connecting plate 31 is provided with a first fixing through hole 312 on the inner wall of the relief groove 311 and a first pin 313 is provided in the first fixing through hole 312. The pressing plate 32 has a rotating through hole 322 through which the first pin 313 passes. The end of the pressing plate 32 away from the pressing part 321 has a relief slope 323 that is inclined downward in the direction away from the relief groove 311, so that the pressing plate 32 can rotate around the first pin 313 without being interfered with by the connecting plate 31.
[0037] Reference Figure 3 and Figure 4 The fixed base 2 has a positioning groove 21 on its top, and the mounting plate 5 has a positioning protrusion 51 that mates with the positioning groove 21 on its bottom. The fixed base 2 has an internal mounting thread 22, and the mounting plate 5 has an mounting through hole 52 that corresponds to the internal mounting thread 22. An mounting screw 53 that mates with the internal mounting thread 22 is provided in the mounting through hole 52, so that the mounting plate 5 can be quickly and stably assembled on the fixed base 2.
[0038] Reference Figure 3 and Figure 4 The mounting plate 5 has a clearance groove 54 that extends through its upper and lower surfaces and allows the clamping plate 32 to pass through. The clearance groove 54 corresponds one-to-one with the clamping plate 32. The mounting plate 5 has a second fixing through hole 55 in the inner wall of the clearance groove 54, and a second pin 56 is provided in the second fixing through hole 55. The clamping plate 32 has a guide through hole 324 for the second pin 56 to pass through. The guide through hole 324 includes a first strip hole 3241 parallel to the length direction of the clamping plate 32 and a second strip hole 3242 communicating with the first strip hole 3241 near one end of the connecting plate 31, wherein the second strip hole 3242 is inclined toward the center of the connecting plate 31.
[0039] Reference Figure 4 and Figure 5The clamping part 321 is provided with a threaded hole 3211, and a clamping head 3212 for abutting against the outer wall of the connecting part of the expander housing is threaded in the threaded hole 3211. In this embodiment, the clamping head 3212 is made of copper. Copper has good ductility and lower hardness than iron, so it is not easy to cause indentations on the expander housing when clamping it. The receiving component 6 includes a receiving block 61 arranged on the mounting plate 5 and a limiting block 62 arranged on the receiving block 61 for abutting against the inner wall of the expander housing. The receiving block 61 is provided with two positioning pins 611 that cooperate with the expander housing and a support pin 612 for supporting the expander housing. The support pin 612 corresponds one-to-one with the clamping head 3212. In this embodiment, the two positioning pins 611 are a cylindrical pin and a diamond pin, which helps to prevent over-positioning.
[0040] The implementation principle of the expander housing fixture in this application embodiment is as follows: After the expander housing is placed on the receiving component 6, the driving component 4 drives the connecting plate 31 of the receiving component 6 to descend. With the second pin 56 and the guide through hole 324 cooperating, the clamping plate 32 first rotates until the clamping head 3212 of the clamping plate 32 is directly opposite the support pin 612, and then clamps the connecting part of the expander housing downward. After that, the lathe performs a first-order machining on the expander housing. After the machining is completed, the driving component 4 drives the receiving component 6 to rise so that the clamping head 3212 of the clamping plate 32 releases the expander housing, and the machined expander housing can be taken out.
[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A pipe expander housing clamp, characterized in that, The device includes a fixed base (2), a pressing assembly (3) that is raised and lowered on the fixed base (2), a driving member (4) that drives the pressing assembly (3) to rise and fall, a mounting plate (5) mounted on the fixed base (2), and a receiving assembly (6) mounted on the mounting plate (5) for receiving the expander housing; the pressing assembly (3) includes a connecting plate (31) connected to the output end of the driving member (4) and a plurality of pressing plates (32) connected to the connecting plate (31), the top end of the pressing plate (32) extending toward the receiving assembly (6) to form a pressing part (321) for pressing the expander housing.
2. The expander housing clamp according to claim 1, characterized in that, The clamping part (321) is provided with a threaded hole (3211) and a clamping head (3212) for abutting against the outer wall of the expander housing is threaded in the threaded hole (3211).
3. A tube expander housing clamp according to claim 2, characterized in that, The receiving component (6) includes a receiving block (61) arranged on the mounting plate (5) and a limiting block (62) disposed on the receiving block (61) and used to abut against the inner wall of the expander housing. The receiving block (61) is provided with a positioning pin (611) that cooperates with the expander housing and a support pin (612) that corresponds to the clamping head (3212) and is used to receive the expander housing.
4. A tube expander housing clamp according to claim 1, characterized in that, The connecting plate (31) is provided with a relief groove (311) through which the end of the pressing plate (32) passes and corresponds one-to-one with the pressing plate (32). The connecting plate (31) is provided with a first fixing through hole (312) on the inner wall of the relief groove (311) and a first pin (313) is provided in the first fixing through hole (312). The pressing plate (32) has a rotating through hole (322) through which the first pin (313) passes.
5. A tube expander housing clamp according to claim 4, characterized in that, The end of the clamping plate (32) away from the clamping part (321) has a relief slope (323) that is inclined away from the relief groove (311).
6. A tube expander housing clamp according to claim 4, characterized in that, The mounting plate (5) has a clearance slot (54) through which the clamping plate (32) passes and corresponds one-to-one with the clamping plate (32). The mounting plate (5) has a second fixing through hole (55) on the inner wall of the clearance slot (54) and a second pin (56) is provided in the second fixing through hole (55). The clamping plate (32) has a guide through hole (324) through which the second pin (56) passes.
7. A tube expander housing clamp according to claim 6, characterized in that, The guide hole (324) includes a first strip hole (3241) parallel to the length direction of the clamping plate (32) and a second strip hole (3242) connected to the first strip hole (3241) near one end of the connecting plate (31), the second strip hole (3242) being inclined toward the center of the connecting plate (31).
8. A tube expander housing clamp according to claim 1, characterized in that, The fixed base (2) has a positioning groove (21) on its top, and the mounting plate (5) has a positioning protrusion (51) at its bottom that mates with the positioning groove (21). The fixed base (2) has an internal mounting thread (22) and an internal mounting hole (52) corresponding to the internal mounting thread (22). An mounting screw (53) mates with the internal mounting thread (22) is provided in the internal mounting hole (52).