Fixture for machining blind hole turbine rotor
By designing a clamp including an annular support table, tensioning screws and support components, the clamping problem of blind-hole turbine rotors before machining is solved, and effective clamping and processing of blind-hole turbine rotors is achieved.
Patent Information
- Application Number
- CN202421403898.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The prior art is difficult to effectively clamp and process blind-hole turbine rotors, resulting in the inability to properly clamp and fix before machining.
A clamp including an annular support table, a tensioning screw and a support member is designed. By providing a give way cavity on the peripheral surface of the lower support, the tensioning screw is used to connect to the axial extension of the blind-hole turbine rotor to achieve tightening and supporting the blind-hole turbine rotor.
The fixture can easily and conveniently clamp and fix the blind-hole turbine rotor, solving the clamping problem of blind-hole turbine rotor before machining, ensuring the stability and quality of the processing process.
Smart Images
Figure CN222726109U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of turbine processing, in particular to a clamp for processing a blind hole turbine rotor. Background Art
[0002] With the increasing demand for modified cars from domestic and foreign automobile customers, the turbine rotor is the most important part of the turbocharger, which is the key to compressing air and improving the power of the car. The working temperature of the turbine rotor can reach 800-900℃, and defects in its production and processing will greatly affect the quality of the entire turbocharger.
[0003] After the turbine blank is made, the turbine still needs to be machined. Generally, the turbine blank has a through hole. Before machining, a long screw is passed through the through hole of the turbine blank and connected to the rotating support seat to fasten the turbine blank and the support seat into one.
[0004] Blind hole turbines have emerged as market demands. The above-mentioned fixture is suitable for turbines with through holes, but cannot be clamped for blind hole turbines. Therefore, how to clamp the blind hole turbine is a problem currently faced. Utility Model Content
[0005] The utility model provides a clamp for processing a blind hole turbine rotor. The utility model is simple and convenient for clamping the blind hole turbine rotor.
[0006] A fixture for processing a blind hole turbine rotor includes a support seat, an annular support platform, and a tightening screw. The support seat includes an upper support seat and a lower support seat. The upper support seat is provided with a mounting hole. One end of the upper support seat is fixed to one end of the lower support seat. A clearance cavity is provided on the circumference of the lower support seat.
[0007] After the annular support platform is fixed to the other end of the upper support, a receiving cavity for receiving a part of the blind hole turbine rotor is formed between the upper support and the annular support platform, and the other end of the annular support platform is used to support the end of the blind hole turbine rotor;
[0008] The tensioning screw passes through the mounting hole on the upper support and enters into the accommodating cavity after giving way to the cavity to be connected with the blind hole turbine rotor.
[0009] Furthermore, an annular protrusion for radially limiting the blind hole turbine rotor is provided on the end surface of the other end of the annular support platform.
[0010] Furthermore, it also includes a supporting component, wherein the upper support is provided with an annular assembly groove surrounding the mounting hole, one end of the supporting component is threadedly connected to the annular assembly groove, and the other end of the supporting component is used to support the middle part of the blind hole turbine rotor.
[0011] Furthermore, it also includes an annular gasket, which is located in the annular assembly groove, and one end of the annular gasket forms a limit for one end of the supporting component.
[0012] Furthermore, an observation hole is provided on the annular support platform.
[0013] Furthermore, the support component includes a cylinder and a turbine support portion, one end of the cylinder is provided with an external thread, the cylinder is threadedly connected to the annular assembly groove, and the other end of the cylinder is fixed to the turbine support portion.
[0014] In the utility model, since a clearance cavity is provided on the circumferential surface of the lower support, when the blind hole turbine rotor is fixed on the fixture, the tensioning screw is passed through the clearance cavity and then through the mounting hole on the upper support to enter the accommodating cavity for connection with the blind hole turbine rotor. For example, the operator manually inserts the tensioning screw into the clearance cavity, and then passes the tensioning screw through the mounting hole on the upper support, and uses a tool such as a wrench to thread the tensioning screw with the threaded hole on the axial extension part, so that the blind hole turbine rotor and the support seat are fastened together. The utility model solves the problem of clamping the blind hole turbine rotor before machining, and is simple and convenient when clamping. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A perspective view of the fixture used to machine a blind hole turbine rotor.
[0016] Figure 2 Cross-section of a fixture used to machine a blind hole turbine rotor.
[0017] Figure 3 For Figure 2 A schematic diagram of a blind hole turbine rotor is hidden on the basis.
[0018] Figure 4 for Figure 3 Enlarged view of the Q section in .
[0019] Figure 5 A stereoscopic view of a fixture used to machine another type of blind hole turbine rotor.
[0020] Figure 6 A cross-sectional view of a fixture used for machining another type of blind hole turbine rotor.
[0021] Figure 7 It is a cross-sectional view of the support component and the annular spacer.
[0022] Reference numerals in the drawings: blind hole turbine rotor A, axial extension A1.
[0023] Support seat 1, upper support 1a, lower support 1b, mounting hole 1c, make way cavity 1d, annular assembly groove 1e, annular support platform 2, end face 2a, observation hole 2b, tightening screw 3, accommodating cavity 4, annular protrusion 5, support part 6, cylinder 6a, turbine support part 6b, annular gasket 7. DETAILED DESCRIPTION
[0024] The utility model is described in detail below in conjunction with the accompanying drawings.
[0025] The lower end of the blind hole turbine rotor A is provided with an axial extension portion A1, and the axial extension portion A1 is provided with a threaded hole, which is a blind hole. Figures 1 to 7 As shown, it includes a support seat 1, an annular support platform 2, and a tightening screw 3. The support seat 1 includes an upper support 1a and a lower support 1b. The upper support 1a and the lower support 1b are both cylindrical. The upper support 1a is provided with a mounting hole 1c, and the mounting hole 1c is a through hole. One end of the upper support 1a is fixed to one end of the lower support 1b, and a yield cavity 1d is provided on the circumferential surface of the lower support 1b. The end face of the upper support 1a can be directly observed through the yield cavity 1d.
[0026] Since each blade is processed during the processing of the blind hole turbine rotor A, it is necessary to rotate the blind hole turbine rotor A, thereby fixing the other end of the lower support 1b to the rotating support mechanism (not shown in the figure), and the rotating support mechanism preferably adopts a dividing mechanism.
[0027] After the annular support platform 2 is fixed to the other end of the upper support 1a, a receiving cavity 4 for receiving a part of the blind hole turbine rotor A is formed between the upper support 1a and the annular support platform 2, and the other end of the annular support platform 2 is used to support the end of the blind hole turbine rotor A. An annular protrusion 5 for radially limiting the blind hole turbine rotor A is provided on the end surface 2a of the other end of the annular support platform 2.
[0028] After placing the end of the blind hole turbine rotor A on the annular support platform 2, the annular support platform 2 provides support for the blind hole turbine rotor A. At the same time, the circumferential surface of the blind hole turbine rotor A cooperates with the inner wall surface of the annular protrusion 5, so that the annular protrusion 5 provides radial limitation for the circumferential surface of the blind hole turbine rotor A.
[0029] Since a clearance cavity 1d is provided on the circumferential surface of the lower support 1b, when the blind hole turbine rotor A is fixed on the fixture, the tensioning screw 3 is passed through the clearance cavity 1d and then through the mounting hole 1c on the upper support 1a to enter the accommodating cavity 4 for connection with the blind hole turbine rotor A. For example, the operator manually inserts the tensioning screw 3 into the clearance cavity 1d, and then passes the tensioning screw 3 through the mounting hole 1c on the upper support 1a, and uses a tool such as a wrench to thread the tensioning screw 3 with the threaded hole on the axial extension part A1, so that the blind hole turbine rotor A is fastened to the support seat 1 as a whole.
[0030] The utility model also includes a supporting component 6, wherein the upper support 1a is provided with an annular assembly groove 1e, the annular assembly groove 1e surrounds the mounting hole 1c, one end of the supporting component 6 is threadedly connected to the annular assembly groove 1e, and the other end of the supporting component 6 is used to support the middle part of the blind hole turbine rotor A.
[0031] The supporting component 6 includes a cylinder 6a and a turbine support portion 6b. One end of the cylinder 6a is provided with an external thread, and the inner wall of the annular assembly groove 1e is provided with an internal thread. The cylinder 6a is threadedly connected to the annular assembly groove 1e, and the other end of the cylinder 6a is fixed to the turbine support portion 6b.
[0032] The cylinder 6a surrounds the axial extension portion A1, and the cylinder 6a and the axial extension portion A1 are loosely matched, so that the cylinder 6a forms a radial limiting effect on the axial extension portion A1. The turbine support portion 6b matches the lower surface of the blind hole turbine rotor A, thereby forming support for the blind hole turbine rotor A. When applying torque to the tightening screw 3, due to the narrow space of the clearance cavity 1d, the tightening screw 3 is generally tightened manually, and the torque applied manually is not easy to control. In addition, the size of the matching part of the blind hole turbine rotor A and the end face 2a is small. If too much torque is applied, it is easy to cause the blind hole turbine rotor A to deform. After the support component 6 forms support for the middle part of the blind hole turbine rotor A, it can prevent the blind hole turbine rotor A from being deformed when the tightening screw 3 is subjected to excessive tension.
[0033] When the first type of blind hole turbine rotor A is fixed to the support seat 1, the support component 6 is located at a first height position, and when the second type of blind hole turbine rotor A is fixed to the support seat 1, the support component 6 is located at a second height position. The first height position and the second height position are not equal. In order to facilitate direct determination of these height positions, the utility model further includes an annular pad 7, which is located in the annular assembly groove 1e, and one end of the annular pad 7 forms a limit for one end of the support component 6. The corresponding annular pad 7 is selected to ensure that the blind hole turbine rotor A is supported by the support component 6 and the annular support platform 2.
[0034] For example, when the first type of blind hole turbine rotor A is fixed to the support seat 1, the annular gasket 7 of the first thickness is used. When the support component 6 is assembled with the annular assembly groove 1e, the support component 6 is limited by the annular gasket 7 and cannot continue to be fed, thereby limiting the support component 6 to the first height position. Similarly, when the second type of blind hole turbine rotor A is fixed to the support seat 1, the annular gasket 7 of the second thickness is used, thereby limiting the support component 6 to the first height position. Therefore, to process different types of blind hole turbine rotors A, it is only necessary to replace the corresponding annular gasket 7.
[0035] In the utility model, an observation hole 2b is provided on the annular support platform 2, through which the combination of the support component 6 and the blind hole turbine rotor A can be observed.
Claims
1. A fixture for machining a blind hole turbine rotor, comprising a support seat (1), characterized in that: It also includes an annular support platform (2) and a tightening screw (3), wherein the support seat (1) includes an upper support seat (1a) and a lower support seat (1b), wherein the upper support seat (1a) is provided with a mounting hole (1c), one end of the upper support seat (1a) is fixed to one end of the lower support seat (1b), and a clearance cavity (1d) is provided on the circumferential surface of the lower support seat (1b); After the annular support platform (2) and the other end of the upper support (1a) are fixed, a receiving cavity (4) for receiving a portion of the blind hole turbine rotor (A) is formed between the upper support (1a) and the annular support platform (2), and the other end of the annular support platform (2) is used to support the end of the blind hole turbine rotor (A); The tensioning screw (3) passes through the mounting hole (1c) on the upper support (1a) after passing through the clearance cavity (1d) and enters into the accommodating cavity (4) for connection with the blind hole turbine rotor (A).
2. The fixture for machining a blind hole turbine rotor according to claim 1, characterized in that: An annular protrusion (5) for radially limiting the blind hole turbine rotor (A) is provided on the end surface (2a) at the other end of the annular support platform (2).
3. The fixture for machining a blind hole turbine rotor according to claim 1, characterized in that: It also includes a support component (6), wherein the upper support (1a) is provided with an annular assembly groove (1e), the annular assembly groove (1e) surrounds the mounting hole (1c), one end of the support component (6) is threadedly connected to the annular assembly groove (1e), and the other end of the support component (6) is used to support the middle part of the blind hole turbine rotor (A).
4. The fixture for machining a blind hole turbine rotor according to claim 3, characterized in that: It also includes an annular gasket (7), which is located in the annular assembly groove (1e), and one end of the annular gasket (7) forms a limit for one end of the supporting component (6).
5. The fixture for machining a blind hole turbine rotor according to claim 4, characterized in that: The annular support platform (2) is provided with an observation hole (2b).
6. The fixture for machining a blind hole turbine rotor according to claim 3, characterized in that: The support component (6) comprises a cylinder (6a) and a turbine support portion (6b). One end of the cylinder (6a) is provided with an external thread. The cylinder (6a) is threadedly connected to the annular assembly groove (1e). The other end of the cylinder (6a) is fixed to the turbine support portion (6b).