Supporting tooling for a workpiece and method of machining

Abstract

This invention belongs to the field of support fixture design technology, specifically relating to a support fixture and processing method for a workpiece. The workpiece has an internal receiving cavity. The support fixture includes: a base plate for placing the workpiece; multiple wedge-shaped blocks, all placed in the receiving cavity and spaced apart sequentially along the circumference of the cavity, forming a receiving space; each wedge-shaped block has a first inclined surface on its side facing the receiving space, and its top wall and the side facing away from the receiving space are in contact with the inner wall of the receiving cavity; a frustum-shaped pressure block, disposed in the receiving space and engaging with the first inclined wedge-shaped surface; and a clamping assembly for driving the frustum-shaped pressure block to apply a compressive force to the multiple wedge-shaped blocks, so that the multiple wedge-shaped blocks support the inner wall of the receiving cavity. Using the above-mentioned support fixture, the workpiece can be supported and clamped from within, improving the accuracy and rigidity of the workpiece during finishing.

Description

Technical Field

[0001] This invention belongs to the field of support tooling design technology, specifically relating to a support tooling for a workpiece and a processing method. Background Technology

[0002] In recent years, the rapidly developing coal chemical industry has seen the gasifier emerge as a crucial core piece of equipment. The gasifier's key feature is the chemical reaction between coal or coke and a gasifying agent at high temperatures, transforming the organic matter in the coal or coke into coal gas. This primarily involves the reaction between carbon in the solid fuel and oxygen, water, carbon dioxide, and hydrogen in the gaseous mixture. During the high-temperature operation of the equipment, a cooling medium is used to rapidly cool the high-temperature solid fuel within a short timeframe to prevent overheating.

[0003] During equipment operation, materials involved in high-temperature combustion are rapidly cooled through the cooling system. Passing through the cylindrical pipes connected to the cooling system, they are quickly cooled upon contact with the cooling medium, preventing deformation and damage to the cooling system and pipes. The equipment's ability to operate within its normal lifespan is closely related to the quality of the quench ring, a crucial component of the cooling system. The quench ring consists of a distribution box, short cylindrical sections, cooling medium inlet and outlet, inner ring, and outer ring. The distribution box and short cylindrical sections combine to form a vital cooling medium channel. The distribution box is machined from a solid annular forging. The distribution box has a hollow tubular structure, and its periphery typically includes multiple short pipes for cooling medium inlet and outlet. The machining process from a solid annular forging to a hollow tubular shape involves significant machining, requiring support before machining. Otherwise, severe vibrations during machining will occur, and the finished distribution box's rigidity will not meet design requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a supporting fixture and processing method for the workpiece to be processed, so as to solve the technical problem of poor rigidity of the distribution box after machining in the prior art.

[0005] To achieve the above objectives, the present invention provides a support fixture for a workpiece to be processed, wherein the workpiece has an internal receiving cavity, and the support fixture includes:

[0006] Multiple wedge-shaped blocks are placed in the receiving cavity and arranged sequentially at intervals along the circumference of the receiving cavity. The multiple wedge-shaped blocks enclose the receiving space. The side of the wedge-shaped blocks facing the receiving space has a first inclined surface. The top wall of the wedge-shaped blocks and the side facing away from the receiving space are both in contact with the inner wall of the receiving cavity.

[0007] A frustum-shaped pressing block is disposed in the receiving space and engages with the first inclined wedge-shaped surface;

[0008] The clamping assembly is used to drive the frustum-shaped pressure block to apply a compressive force to multiple wedge-shaped blocks, so that the multiple wedge-shaped blocks support the inner wall of the receiving cavity.

[0009] In some embodiments, the support fixture also includes a base plate for placing the workpiece to be processed, a plurality of wedge blocks are evenly spaced and symmetrically arranged, the central axis of the receiving space coincides with the central axis of the receiving cavity, and the frustum pressure block has a frustum-shaped structure with its outer diameter gradually decreasing in the direction toward the base plate.

[0010] In some embodiments, the support fixture further includes a base plate for placing the workpiece to be processed. The base plate has a threaded hole along the vertical direction. The frustum pressure block has a locking hole through it along the vertical direction. The central axes of the locking hole and the threaded hole coincide. One end of the clamping assembly passes through the locking hole and the threaded hole in sequence and forms a threaded connection with the threaded hole. The other end of the clamping assembly has a clamping part that drives the frustum pressure block to apply a vertical force toward the base plate.

[0011] In some embodiments, the clamping assembly includes: a screw, a first end of which is inserted into a threaded hole and a locking hole and is threadedly connected to the threaded hole, and a second end of which extends from the end of the frustum-shaped pressure block away from the base plate; and a clamping part, which is a nut, which is fitted onto the second end of the screw and is threadedly connected to the screw, and the nut is used to apply a vertical force toward the base plate to the frustum-shaped pressure block.

[0012] In some embodiments, the outer periphery of both the first end and the second end of the screw is provided with external threads, and a smooth connection portion is provided between the two external threads.

[0013] In some embodiments, the support fixture further includes a base plate for placing the workpiece to be processed, and the clamping assembly includes: a support frame, a first end of which is connected to the base plate, and a second end of which extends vertically and is vertically spaced from the top of the frustum-shaped pressure block; and a vertical adjustment member installed at the second end of the support frame, the adjustment end of which can approach or move away from the frustum-shaped pressure block to clamp or release the frustum-shaped pressure block.

[0014] In some embodiments, a second inclined surface is provided between the top wall and the inner side wall of the receiving cavity, and a third inclined surface is provided between the top wall of the wedge block and the side away from the receiving space. The third inclined surface is also provided with a mounting groove. The support fixture for the workpiece to be processed also includes: multiple support members, the number of support members being the same as the number of wedge blocks. One end of the support member is provided with a tightening part, and the other end of the support member is provided with a plug-in part. The multiple plug-in parts are inserted into the multiple mounting grooves one by one, and the tightening part is used to abut against the second inclined surface.

[0015] A second aspect of the present invention provides a machining method for a workpiece, the machining method being applied to a support fixture for the workpiece, the machining method comprising: placing the workpiece on a base plate; placing a plurality of wedge blocks spaced circumferentially in a receiving cavity; placing a frustum-shaped pressure block into the receiving space; applying a clamping force to the frustum-shaped pressure block by a clamping assembly to press the wedge blocks against the inner wall of the workpiece; and machining the workpiece.

[0016] In some embodiments, the top wall of the wedge block and the side facing away from the receiving space are provided with a third inclined surface, and the third inclined surface is also provided with a mounting groove. The support fixture also includes multiple support members, one end of which is provided with a tightening part, and the other end of which is provided with a plug-in part. The step of placing multiple wedge blocks in the receiving cavity at intervals along the circumference includes: inserting the plug-in parts of multiple support members into the multiple mounting grooves one by one; and placing the combination of multiple support members and wedge blocks at intervals along the circumference in the receiving cavity.

[0017] In some embodiments, the step of inserting the connectors of multiple support members into multiple mounting slots one by one includes: determining the model of the workpiece to be processed; determining the corresponding model of the support member based on the model of the workpiece to be processed; and inserting the connectors of the multiple support members of the corresponding model into the multiple mounting slots one by one.

[0018] The above technical solution provides a support fixture for a workpiece, which has an internal cavity. The support fixture includes a base plate, multiple wedge blocks, a frustum-shaped pressure block, and a clamping assembly. The base plate is used to place the workpiece. Multiple wedge blocks are placed in the cavity and spaced apart circumferentially. The middle portions of the wedge blocks form a receiving space for the frustum-shaped pressure block. The side of each wedge block facing the receiving space has a first inclined surface. The top wall and the side of the wedge block away from the receiving space are in contact with the inner wall of the cavity. The frustum-shaped pressure block engages with the first inclined wedge surface. The clamping assembly drives the frustum-shaped pressure block to apply a compressive force to the multiple wedge blocks, enabling the wedge blocks to support the inner wall of the cavity. This provides internal support for the workpiece during processing and compresses it from the inside, reducing vibration caused by processing, improving processing accuracy, and ensuring the post-processing stiffness meets design requirements.

[0019] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. Those skilled in the art can obtain other drawings based on the structures shown in these drawings without any inventive effort. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure when the workpiece to be processed and the supporting tooling are matched according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the structure of the workpiece to be processed provided according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the support tooling provided according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional schematic diagram of a frustum-shaped pressure block provided according to an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional schematic diagram of a plurality of wedge-shaped blocks provided according to an embodiment of the present invention;

[0026] Figure 6 This is a top view of a plurality of wedge-shaped blocks provided according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the screw structure provided according to an embodiment of the present invention;

[0028] Figure 8 This is a flowchart of a processing method for a workpiece according to an embodiment of this method.

[0029] Explanation of reference numerals in the attached figures

[0030] 100 parts to be processed

[0031] 101 Receiving cavity

[0032] 102 Second Incline

[0033] 10. Base plate

[0034] 20 wedge blocks

[0035] 21. Capacity

[0036] 22 First inclined plane

[0037] 23 Third inclined plane

[0038] 30 Frustum-shaped pressing block

[0039] 31 Locking Hole

[0040] 40 Clamping assembly

[0041] 41 Screw

[0042] 411 External thread

[0043] 412 Smooth connection

[0044] 42 Clamping part Detailed Implementation

[0045] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0046] The supporting fixture and processing method for the workpiece 100 of the present invention are described below with reference to the accompanying drawings. Figure 1 The diagram shown is a structural schematic of the workpiece 100 to be processed and the supporting fixture according to an embodiment of the present invention; as shown Figure 2 The diagram shown is a structural schematic of the workpiece 100 to be processed according to an embodiment of the present invention; as shown Figure 3 The diagram shown is a structural schematic of a support fixture provided according to an embodiment of the present invention; as follows: Figure 4 The diagram shown is a cross-sectional view of a frustum-shaped pressure block 30 provided according to an embodiment of the present invention. The workpiece 100 has a receiving cavity 101 inside, and the supporting fixture includes:

[0047] Multiple wedge-shaped blocks 20 are placed in the receiving cavity 101 and are arranged sequentially at intervals along the circumference of the receiving cavity 101. The multiple wedge-shaped blocks 20 form a receiving space 21. The side of the wedge-shaped block 20 facing the receiving space 21 has a first inclined surface 22. The top wall of the wedge-shaped block 20 and the side facing away from the receiving space 21 are both in contact with the inner wall of the receiving cavity 101.

[0048] A frustum-shaped pressing block 30 is disposed in the receiving space 21 and engages with the wedge-shaped surface of the first inclined surface 22.

[0049] The clamping assembly 40 is used to drive the frustum-shaped pressure block 30 to apply a compressive force to the plurality of wedge blocks 20, so that the plurality of wedge blocks 20 support the inner wall of the receiving cavity 101.

[0050] The workpiece 100 has an internal receiving cavity 101. During machining, vibration can easily occur in the workpiece 100, affecting the accuracy of the distribution box. Excessive clamping pressure from the outside can also cause irreversible deformation of the workpiece 100. Therefore, during machining, the workpiece 100 needs to be supported and clamped from within to facilitate machining of the holes and outer periphery.

[0051] This invention provides a supporting fixture comprising multiple wedge blocks 20, a frustum-shaped pressing block 30, and a clamping assembly 40. The multiple wedge blocks 20 enclose a receiving space 21. The side of each wedge block 20 facing away from the receiving space 21 and its top wall are in contact with the workpiece 100. The frustum-shaped pressing block 30 is disposed within the receiving space 21, and its circumferential direction forms a wedge-shaped surface engagement with the first inclined surface 22 of the multiple wedge blocks 20. When the frustum-shaped pressing block 30 applies a compressive force to the multiple wedge blocks 20, it can support and clamp the multiple wedge blocks 20 against the inner peripheral wall of the workpiece 100. The clamping assembly 40 can apply a force toward the base plate 10 to the frustum-shaped pressing block 30, causing the frustum-shaped pressing block 30 to compress the multiple wedge blocks 20, thereby supporting and clamping the multiple wedge blocks 20 against the inner wall of the workpiece 100. The aforementioned support fixture has a simple structure, low cost, and is easy to debug. It can support and clamp the workpiece 100 from inside, improve the processing accuracy of the workpiece 100, and ensure that the rigidity of the workpiece 100 after processing meets the design requirements.

[0052] In one specific embodiment, the structure of the workpiece 100 to be processed is as follows: Figure 2 As shown, the workpiece 100 to be processed has a receiving cavity 101, and the inner peripheral wall of the receiving cavity 101 forms a hollow annular space, in which multiple wedge blocks 20 can be placed.

[0053] In one embodiment, such as Figure 5 The diagram shown is a cross-sectional view of a plurality of wedge-shaped blocks 20 provided according to an embodiment of the present invention; as shown Figure 6 The diagram shown is a top view of a plurality of wedge blocks 20 provided according to an embodiment of the present invention. The supporting fixture also includes a base plate 10 for placing the workpiece to be processed. The plurality of wedge blocks 20 are arranged symmetrically at uniform intervals. The central axis of the receiving space 21 coincides with the central axis of the receiving cavity 101. The frustum pressure block 30 has a frustum-shaped structure and its outer diameter gradually tapers towards the base plate 10. The central axis of the receiving space 21 coincides with the central axis of the receiving cavity 101, and the plurality of wedge blocks 20 are arranged symmetrically and uniformly, allowing the frustum pressure block 30 to uniformly apply a compressive force to the plurality of wedge blocks 20. The outer diameter of the frustum pressure block 30 gradually tapers towards the base plate 10, so that when a downward force is applied to the frustum pressure block 30, the horizontal component of the compressive force can drive the frustum pressure block 30 to apply a clamping force along the circumferential direction of the receiving cavity 101, thereby supporting and clamping the workpiece 100 to be processed.

[0054] In one embodiment, such as Figure 1 and Figure 3As shown, the supporting fixture also includes a base plate 10 for placing the workpiece to be processed. The clamping assembly 40 includes a screw 41 and a clamping part 42. The first end of the screw 41 is inserted into a threaded hole and a locking hole 31 and is threadedly connected to the threaded hole. The second end of the screw 41 extends out from the end of the frustum-shaped pressure block 30 away from the base plate 10. The clamping part 42 is a nut, which is fitted onto the second end of the screw 41 and threadedly connected to the screw 41. The nut is used to apply a vertical force toward the base plate 10 to the frustum-shaped pressure block 30. The first end of the screw 41 can be inserted into the threaded hole and the locking hole 31 and threadedly connected to the threaded hole. The second end of the screw 41 can extend out from the end of the frustum-shaped pressure block 30 away from the base plate 10. The nut can be fitted onto the second end of the screw 41 and threadedly connected to the second end of the screw 41. After tightening the nut, the nut can apply a downward force to the frustum-shaped pressure block 30 to drive the frustum-shaped pressure block 30 to apply a compressive force to the multiple wedge blocks 20. The aforementioned support fixture can apply force to the frustum pressure block 30 through a simple structure, achieving both convenience and structural stability.

[0055] In one embodiment, such as Figure 7 The diagram shown is a structural schematic of the screw 41 provided according to an embodiment of the present invention. Both the first end and the second end of the screw 41 are provided with external threads 411 on their outer peripheries, and a smooth connecting portion 412 is provided between the two external threads 411. The two external threads 411 can be connected to the base plate 10 and the nut respectively, so that the base plate 10 can be fixed to the screw 41, the nut can apply a downward force to the frustum pressure block 30, and the smooth connecting portion 412 passes through the frustum pressure block 30, allowing the screw 41 to be installed and disassembled more smoothly.

[0056] In one embodiment, the support fixture further includes a base plate 10 for placing the workpiece to be processed. The clamping assembly 40 includes a support frame (not shown) and a vertical adjustment member (not shown). A first end of the support frame is connected to the base plate 10, and a second end of the support frame extends vertically and is vertically spaced from the top of the frustum-shaped pressure block 30. The vertical adjustment member is installed at the second end of the support frame, and its adjusting end can move closer to or further away from the frustum-shaped pressure block 30 to clamp or release it. In one specific embodiment, the length of the adjusting end of the vertical adjustment member is adjustable. When the adjusting end extends, it can clamp the frustum-shaped pressure block 30, causing the frustum-shaped pressure block 30 to apply pressure to the plurality of wedge blocks 20. When the adjusting end shortens, it can release the frustum-shaped pressure block 30, facilitating the removal of the frustum-shaped pressure block 30 and the plurality of wedge blocks 20 after processing. In another specific embodiment, the vertically adjustable member is a cylinder, and the adjusting end is a cylinder pressure block. Using the aforementioned clamping component 40, the frustum-shaped clamping block 30 can be clamped more conveniently, with simple operation and high clamping efficiency.

[0057] In one embodiment, such as Figure 1As shown, a second inclined surface 102 is provided between the top wall and the inner side wall of the receiving cavity 101, and a third inclined surface 23 is provided between the top wall of the wedge block 20 and the side facing away from the receiving space 21. The third inclined surface 23 also has a mounting groove (not shown in the figure). The support fixture for the workpiece 100 also includes multiple support members (not shown in the figure), the number of which is the same as the number of wedge blocks 20. One end of each support member has a tightening part, and the other end has a plug-in part. Multiple plug-in parts are inserted into multiple mounting grooves one by one, and the tightening part abuts against the second inclined surface 102. Different models of workpieces 100 have different inclination angles of the second inclined surface 102. To make the support fixture provided in this embodiment of the invention more versatile, this embodiment of the invention provides a mounting groove on the third inclined surface 23. Different models of support members can be inserted into the mounting groove so that the tightening part of the support member can fit against the second inclined surface 102, facilitating the support and clamping of the second inclined surface 102. The aforementioned support fixture can provide clamping support for various types of workpieces 100 to be processed, thus exhibiting greater adaptability.

[0058] In one embodiment, a processing method for the workpiece 100 is provided, such as... Figure 8 The diagram shows a flowchart of a machining method for a workpiece 100 according to an embodiment of this method. The machining method is applied to the support fixture of the workpiece 100 described above, and the machining method includes:

[0059] S101, Place the workpiece 100 to be processed on the base plate 10;

[0060] S102, multiple wedge-shaped blocks 20 are placed circumferentially spaced in the receiving cavity 101;

[0061] S103, place the frustum pressing block 30 into the receiving space 21;

[0062] S104, the clamping assembly 40 applies a clamping force to the frustum-shaped block 30 so that the wedge block 20 and the inner wall of the workpiece 100 are pressed together;

[0063] S105, perform machining on the workpiece 100.

[0064] When machining the workpiece 100, it is first placed on the base plate 10. Then, multiple wedge blocks 20 are placed circumferentially in the receiving cavity 101, so that the top wall and side wall of the wedge blocks 20 facing away from the receiving space 21 abut against the inner wall of the receiving cavity 101. A frustum-shaped pressure block 30 is placed into the receiving space 21 formed by the multiple wedge blocks 20, so that the frustum-shaped pressure block 30 and the wedge blocks 20 form a wedge-shaped surface fit. A clamping force is applied to the frustum-shaped pressure block 30 by the clamping assembly 40, pressing the wedge blocks 20 against the inner wall of the workpiece 100 to support it. After completing the above steps, machining the workpiece 100 can achieve higher precision, and the rigidity after machining meets the design requirements.

[0065] In one embodiment, the top wall of the wedge block 20 and the side facing away from the receiving space 21 are provided with a third inclined surface 23, and the third inclined surface 23 is also provided with a mounting groove. The support fixture also includes multiple support members, one end of which is provided with a tightening part, and the other end of which is provided with a plug-in part. The step of placing multiple wedge blocks 20 in the receiving cavity 101 at circumferential intervals includes: inserting the plug-in parts of the multiple support members into the multiple mounting grooves one by one; and placing the combination of multiple support members and wedge blocks 20 at circumferential intervals in the receiving cavity 101. When a second inclined surface 102 is provided between the top wall and the inner side wall of the workpiece 100, the plug-in parts of the support members are inserted into the multiple mounting grooves one by one, and then the combination of multiple support members and wedge blocks 20 is placed at circumferential intervals in the receiving cavity 101 to support and press the second inclined surface 102.

[0066] In one embodiment, the step of inserting the connectors of multiple support members into multiple mounting slots one-to-one includes: determining the model of the workpiece 100 to be processed; determining the corresponding model of the support member based on the model of the workpiece 100; and inserting the connectors of the multiple support members of the corresponding model into the multiple mounting slots one-to-one. In the process of inserting the connectors of multiple support members into the multiple mounting slots one-to-one, it is necessary to determine the model of the workpiece 100 to be processed, and then select the connectors of multiple support members of the corresponding model based on the model of the workpiece 100 to insert them into the multiple mounting slots one-to-one, so that the support members are tightly fitted and supported against the second sidewall of the workpiece 100.

[0067] In one embodiment, the clamping assembly 40 includes a screw 41 and a nut. The base plate 10 has a threaded hole along its vertical direction, and the frustum-shaped clamping block 30 has a through locking hole 31 along its vertical direction. The locking hole 31 is positioned corresponding to the threaded hole. The step of clamping the frustum-shaped clamping block 30 and the base plate 10 by the clamping assembly 40 includes: inserting the first end of the screw 41 into the locking hole 31 and the threaded hole to make the screw 41 threadedly connected to the threaded hole; then putting the nut on the screw 41 and tightening the nut and the screw 41 to apply a clamping force to the frustum-shaped clamping block 30 toward the base plate 10.

[0068] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A support fixture for a workpiece to be processed, characterized in that, The workpiece to be processed (100) has an internal cavity (101), and the supporting fixture includes: Multiple wedge-shaped blocks (20) are placed in the receiving cavity (101) and are arranged sequentially at intervals along the circumference of the receiving cavity (101). The multiple wedge-shaped blocks (20) enclose the receiving space (21). The side of the wedge-shaped block (20) facing the receiving space (21) has a first inclined surface (22). The top wall of the wedge-shaped block (20) and the side facing away from the receiving space (21) are both in contact with the inner wall of the receiving cavity (101). A frustum-shaped pressure block (30) is disposed in the receiving space (21) and engages with the wedge-shaped surface of the first inclined surface (22); A clamping assembly (40) is used to drive the frustum-shaped pressure block (30) to apply a squeezing force to the plurality of wedge blocks (20) so that the plurality of wedge blocks (20) support the inner wall of the receiving cavity (101).

2. The supporting fixture for the workpiece according to claim 1, characterized in that, The supporting fixture also includes a base plate (10) for placing the workpiece to be processed, a plurality of wedge blocks (20) are evenly spaced and symmetrically arranged, the central axis of the accommodating space (21) coincides with the central axis of the accommodating cavity (101), and the frustum pressure block (30) has a frustum-shaped structure and its outer diameter is gradually reduced along the direction close to the base plate (10).

3. The supporting fixture for the workpiece according to claim 1, characterized in that, The supporting fixture also includes a base plate (10) for placing the workpiece to be processed. The base plate (10) has a threaded hole in the vertical direction. The frustum pressure block (30) has a locking hole (31) in the vertical direction. The central axis of the locking hole and the threaded hole coincides. One end of the clamping assembly (40) passes through the locking hole (31) and the threaded hole in sequence and forms a threaded connection with the threaded hole. The other end of the clamping assembly (40) has a clamping part (42) that drives the frustum pressure block (30) to apply a vertical force toward the base plate (10).

4. The supporting fixture for the workpiece according to claim 3, characterized in that, The clamping assembly (40) includes: The screw (41) has its first end inserted into the threaded hole and the locking hole (31) and threadedly connected to the threaded hole. The second end of the screw (41) extends out from the end of the frustum pressure block (30) away from the base plate (10). The clamping part (42) is a nut, which is sleeved on the second end of the screw (41) and forms a threaded connection with the screw (41). The nut is used to apply a vertical force toward the base plate (10) to the frustum pressure block (30).

5. The supporting fixture for the workpiece according to claim 4, characterized in that, The outer periphery of the first end and the second end of the screw (41) are provided with external threads (411), and a smooth connection part (412) is provided between the two external threads (411).

6. The supporting fixture for the workpiece according to claim 1, characterized in that, The supporting fixture also includes a base plate (10) for placing the workpiece to be processed, and the clamping assembly (40) includes: A support frame, the first end of which is connected to the base plate (10), and the second end of which extends vertically and is vertically spaced from the top of the frustum pressure block (30); A vertical adjustment member is installed at the second end of the support frame. The adjustment end of the vertical adjustment member can move closer to or further away from the frustum pressure block (30) to press or release the frustum pressure block (30).

7. The supporting fixture for the workpiece according to claim 1, characterized in that, A second inclined surface (102) is provided between the top wall and the inner side wall of the receiving cavity (101), and a third inclined surface (23) is provided between the top wall of the wedge block (20) and the side facing away from the receiving space (21). The third inclined surface (23) is also provided with a mounting groove. The support fixture for the workpiece (100) to be processed also includes: Multiple support members, the number of which is the same as the number of wedge blocks (20), one end of each support member is provided with a tightening part, and the other end of each support member is provided with a plug-in part. The multiple plug-in parts are inserted into the multiple mounting slots one by one, and the tightening part is used to abut against the second inclined surface (102).

8. A method for machining a workpiece, characterized in that, The processing method is applied to the support fixture of the workpiece (100) to be processed according to any one of claims 1 to 7, and the processing method includes: The plurality of wedge-shaped blocks (20) are placed circumferentially spaced in the receiving cavity (101); Place the frustum pressing block (30) into the receiving space (21); The clamping assembly (40) applies a clamping force to the frustum-shaped block (30) to press the wedge block (20) and the inner wall of the workpiece (100) together; The workpiece (100) to be processed is machined.

9. The processing method for the workpiece according to claim 8, characterized in that, The top wall of the wedge block (20) and the side facing away from the receiving space (21) are provided with a third inclined surface (23), and the third inclined surface (23) is also provided with a mounting groove. The support fixture also includes multiple support members. One end of the support member is provided with a tightening part, and the other end of the support member is provided with a plug-in part. The step of placing the multiple wedge blocks (20) circumferentially spaced in the receiving cavity (101) includes: Insert the connectors of the multiple support members into the multiple mounting slots one by one; The assembly of multiple supports and wedges (20) is placed circumferentially spaced in the receiving cavity (101).

10. The processing method for the workpiece according to claim 9, characterized in that, The step of inserting the connectors of the multiple support members one by one into the multiple mounting slots includes: Determine the model of the workpiece (100) to be processed; The corresponding support component is determined according to the model of the workpiece (100) to be processed; Insert the corresponding connectors of the various support members into the various mounting slots one by one.

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