Positioning clamp for machining volute

Abstract

The utility model provides a positioning fixture for processing a volute, which comprises a fixed seat, the fixed seat comprises a pressing part, a supporting part and a positioning block, the pressing part is horizontally arranged, the supporting part is vertically arranged at the top end of the pressing part, and the positioning block is parallelly arranged on the supporting part; and the assembly part is provided with a positioning hole and an assembly hole used for being connected with a threaded hole of the volute, the positioning hole is connected to the positioning block in a sleeving mode, the assembly part is arranged on the supporting part in parallel, and the assembly part is suspended above the pressing part. The positioning clamp for machining the volute is simple in structure and convenient to operate, the assembly part is connected with the volute in advance, then the positioning hole is matched with the positioning block, the assembly part is fixed to the supporting part, the volute is made to be in a vertical state, and the volute can be conveniently machined by a machine tool.

Description

Technical Field

[0001] The utility model relates to the technical field of volute processing, in particular to a positioning fixture for processing a volute. Background Art

[0002] The volute is an important component inside the compressor for guiding and converting the air flow, and its outer shell is usually in a spiral structure. During the process of processing the volute, due to the irregular shape of the volute, special fixtures are required for fixing. However, the current fixing fixtures have the following disadvantages in actual use: when the volute fixing fixture is working, it basically directly restricts the volute. When processing the air outlet of the volute, a part of the outer shell at the air outlet of the volute is attached to the fixture, and it is very likely to interfere with the fixture during machine tool processing, affecting the processing efficiency. Summary of the Utility Model

[0003] The purpose of this application is to solve the above problems, and provide a positioning fixture for processing a volute, so as to solve the technical problem that the machine tool is prone to interference with the fixture when processing the air outlet of the volute.

[0004] To achieve the above purpose, this application provides a positioning fixture for processing a volute, including

[0005] A fixed seat, the fixed seat includes a pressing part, a supporting part and a positioning block. The pressing part is horizontally arranged, the supporting part is vertically arranged at the top of the pressing part, and the positioning block is parallel to the supporting part;

[0006] An assembly, the assembly is provided with a positioning hole and an assembly hole for connecting with the threaded hole of the volute. The positioning hole is sleeved on the positioning block, the assembly is parallel to the supporting part, and the assembly is suspended above the pressing part.

[0007] Compared with the prior art, the positioning fixture for processing a volute of the utility model has a simple structure and is easy to operate. The assembly is pre-connected with the volute, and then through the cooperation of the positioning hole and the positioning block, the assembly is fixed on the supporting part, and the volute is made to be in an upright state, which is convenient for the machine tool to process the volute.

[0008] In one embodiment, the supporting part is arranged in the middle of the pressing part to form an inverted T-shaped structure. It is convenient for the pressing device of the machine tool to symmetrically press the pressing part on the fixed seat, improving safety and stability.

[0009] In one embodiment, the pressing part and the supporting part are detachably connected, which is convenient for maintenance or replacement of the damaged pressing part or supporting part.

[0010] In one embodiment, the pressing part is provided with a first through hole, and the supporting part is provided with a first threaded hole. A screw passes through the first through hole and is threadedly connected to the first threaded hole. This facilitates disassembly, and the threaded connection between the pressing part and the supporting part is not likely to become loose.

[0011] In one embodiment, the first through hole is a countersunk hole to prevent the nut of the screw from protruding and affecting the placement of the pressing part.

[0012] In one embodiment, the positioning block is detachably connected to the supporting part, which facilitates the repair or replacement of the damaged positioning block or supporting part.

[0013] In one embodiment, the supporting part is provided with a groove, and the positioning block is arranged in the groove and protrudes from the groove. The provision of the groove facilitates the installation of the positioning block on the supporting part and improves the assembly efficiency.

[0014] In one embodiment, the positioning block is provided with a second through hole, and the supporting part is provided with a second threaded hole that matches the second through hole. A screw passes through the second through hole and is threadedly connected to the second threaded hole. This facilitates disassembly, and the threaded connection between the positioning block and the supporting part is not likely to become loose.

[0015] In one embodiment, the length of the positioning hole is equal to the length of the positioning block, and the width of the positioning hole is greater than the width of the positioning block. This facilitates the quick sleeving of the positioning hole on the positioning block and improves the assembly error tolerance.

[0016] In one embodiment, the fitting is provided with a third through hole, and the supporting part is provided with a third threaded hole. A screw passes through the third through hole and is threadedly connected to the third threaded hole. This facilitates disassembly, and the threaded connection between the fitting and the supporting part is not likely to become loose.

[0017] For better understanding and implementation, the present application will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a positioning fixture for machining a volute in an embodiment of the present application;

[0019] Figure 2 is an exploded structural diagram of a positioning fixture for machining a volute in an embodiment of the present application;

[0020] Figure 3 is a schematic structural diagram of the assembly process of a volute and a positioning fixture in an embodiment of the present application;

[0021] Figure 4 is a schematic structural diagram of the completed assembly of a volute and a positioning fixture in an embodiment of the present application.

[0022] Reference numerals in the figures:

[0023] 1 - Fixed seat, 2 - Fitting, 11 - Pressing part, 12 - Supporting part, 13 - Positioning block, 21 - Positioning hole, 22 - Assembly hole, 23 - Third through hole, 100 - Volute, 111 - First through hole, 121 - First threaded hole, 122 - Second threaded hole, 123 - Third threaded hole, 124 - Groove, 131 - Second through hole. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application. It can be understood that the accompanying drawings are only for reference and illustration, and are not used to limit the present application. The connection relationships shown in the drawings are only for clear description and do not limit the connection methods.

[0025] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. It should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] It should also be noted that in the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] Please refer to Figure 1, this embodiment provides a positioning fixture for machining a volute. Specifically, the positioning fixture for machining a volute includes a fixed seat 1, and the fixed seat 1 includes a pressing part 11, a supporting part 12 and a positioning block 13. The pressing part 11 is horizontally arranged, the supporting part 12 is vertically arranged at the top of the pressing part 11, and the positioning block 13 is parallel to the supporting part 12; a fitting 2, the fitting 2 is provided with a positioning hole 21 and an assembly hole 22 for connecting with the threaded hole of the volute. The positioning hole 21 is sleeved on the positioning block 13, the fitting 2 is parallel to the supporting part 12, and the fitting 2 is suspended above the pressing part 11.

[0028] Among them, the pressing part 11 is a square plate-like structure, which has high stability and bearing capacity, can withstand the large pressing force of the pressing device of the machine tool without being easily damaged, and is convenient for processing. In another embodiment, the pressing part 11 can also be a circular plate-like structure or other shaped plate-like structures. In another embodiment, the pressing part 11 can also be a columnar structure or other shaped structures.

[0029] The supporting part 12 is arranged in the middle of the pressing part 11 to form an inverted T-shaped structure. The pressing device of the machine tool can synchronously press the pressing parts 11 on both sides of the supporting part 12, effectively avoiding the offset of the positioning fixture during the pressing process and ensuring the stability of pressing. Preferably, the supporting part 12 is a square plate-like structure, its length is equal to the length of the fixed seat 1, and its width is smaller than the width of the supporting part 12. In another embodiment, the supporting part 12 can also be arranged at any end of the pressing part 11 to form an L-shaped structure with the pressing part 11, or arranged at other positions of the pressing part 11. In another embodiment, the length of the supporting part 12 can also be greater than or less than the length of the pressing part 11. In another embodiment, the supporting part 12 can also be a columnar structure or other shaped structures.

[0030] The pressing part 11 and the supporting part 12 are detachably connected, which is convenient for repairing and replacing the damaged pressing part 11 or the supporting part 12, reducing the repair time and downtime, improving the overall availability and efficiency of the equipment, and reducing the repair cost. And when the volute does not need to be machined, the pressing part 11 and the supporting part 12 can be disassembled and stored to save space. In another embodiment, the pressing part 11 and the supporting part 12 can also be integrally formed.

[0031] Please refer to Figure 2, the pressing part 11 is provided with a first through hole 111, and the supporting part 12 is provided with a first threaded hole 121. A screw passes through the first through hole 111 and is threadedly connected to the first threaded hole 121. This facilitates disassembly, and the threaded connection between the pressing part 11 and the supporting part 12 is not likely to become loose. The threaded connection between the pressing part 11 and the supporting part 12 is not likely to become loose, which can achieve a relatively high connection strength. It not only ensures the stability of the connection but also improves the load-bearing capacity of the entire structure, has relatively high safety performance, and is convenient for installation and disassembly. Specifically, the number of the first through holes 111 is 4, which are arranged at equal intervals along the length direction of the pressing part 11. The first threaded holes 121 are arranged at equal intervals along the length direction of the supporting part 12 at the bottom of the supporting part 12 and correspond to the first through holes 111 one by one. In another embodiment, the number of the first through holes 111 can also be 3, 5 or other numbers, and the number of the first threaded holes 121 corresponds to the number of the first through holes 111 one by one. In another embodiment, the first through holes 111 can also be arranged in a square matrix, and correspondingly, the first threaded holes 121 are also arranged in a square matrix. In another embodiment, the pressing part 11 and the supporting part 12 can also be assembled together by a clamping method or other connection methods.

[0032] The first through hole 111 is a counterbore hole to prevent the nut of the screw from protruding from the end face of the pressing part 11 and affecting the horizontal placement of the pressing part 11. In another embodiment by Zhou Minghua, the first through hole 111 can also be an ordinary through hole, and a receiving groove for receiving the nut is provided at the bottom of the pressing part 11.

[0033] After the positioning block 13 is inserted into the positioning hole 21, it does not protrude from the positioning hole 21, preventing the positioning block 13 from interfering with the volute and affecting the processing. Moreover, a certain space can be reserved to accommodate the screw that fastens the first through hole 111 and the first threaded hole 121, preventing the screw from protruding and scratching the volute during assembly.

[0034] The positioning block 13 is detachably connected to the supporting part 12, which is convenient for repairing and replacing the damaged positioning block 13 or the supporting part 12, reducing the repair time and downtime, improving the overall availability and efficiency of the equipment, and reducing the repair cost. Moreover, when the volute does not need to be processed, the positioning block 13 and the supporting part 12 can be disassembled and then stored to save space. In another embodiment, the positioning block 13 and the supporting part 12 can also be integrally formed.

[0035] The support portion 12 is provided with a groove 124, and the positioning block 13 is arranged in the groove 124 and protrudes from the groove 124. The provision of the groove 124 facilitates the installation of the positioning block 13 on the support portion 12 and improves the assembly efficiency. Preferably, the shape of the groove 124 matches the shape of the positioning block 13. In another embodiment, the support portion 12 may not be provided with the groove 124, and the positioning block 13 is directly arranged on the surface of the support portion 12; alternatively, the positioning block 13 has a slot, and the support portion 12 is provided with a convex block, and the slot is sleeved on the convex block.

[0036] The positioning block 13 is provided with a second through hole 131, and the support portion 12 is provided with a second threaded hole 122 matching the second through hole 131. A screw passes through the second through hole 131 and is threadedly connected to the second threaded hole 122. The threaded connection between the positioning block 13 and the support portion 12 is not easily loosened, and a relatively high connection strength can be achieved. This not only ensures the connection stability but also improves the load-bearing capacity of the entire structure, has relatively high safety performance, and is convenient for installation and disassembly. Preferably, the second threaded hole 122 is arranged in the groove 124, which is convenient for coaxial positioning of the second threaded hole 122 and the second through hole 131 and further improves the assembly efficiency. The number of the second through holes 131 is 3, and they are arranged at equal intervals along the length direction of the positioning block 13. The second threaded holes 122 are arranged at equal intervals along the length direction of the support portion 12 in the groove 124 and correspond to the first through holes 111 one by one. In another embodiment, the number of the second through holes 131 may also be 2, 4 or other numbers, and the number of the second threaded holes 122 corresponds to the number of the second through holes 131 one by one. In another embodiment, the second through holes 131 may also be arranged in a square matrix, and correspondingly, the second threaded holes 122 are also arranged in a square matrix. In another embodiment, the positioning block 13 and the support portion 12 may also be assembled together by a clamping method or other connection methods.

[0037] The length of the positioning hole 21 is equal to the length of the positioning block 13, and the width of the positioning hole 21 is greater than the width of the positioning block 13. The equal length of the positioning block 13 and the positioning hole 21 can prevent the positioning block 13 from horizontally shaking in the positioning hole 21. The greater width of the positioning hole 21 than the width of the positioning block 13 can make it easier for the positioning hole 21 to align with and insert the positioning block 13. Considering that the fitting 2 has a certain weight after being attached to the volute, such a design can reduce the assembly difficulty and assembly time. In another embodiment, the width of the positioning hole 21 may also be equal to the width of the positioning block 13.

[0038] The fitting 2 is a square plate-like structure. The number of its assembly holes 22 is six, symmetrically arranged at the left and right ends of the fitting 2. The length of the fitting 2 matches the outer diameter of the volute and is greater than the length of the support portion 12 to prevent the support portion 12 from interfering with the screws fastened in the assembly holes 22. The fitting 2 is fixed to the end of the support portion 12 away from the fixed seat 1. After the fitting 2 is fixed to the support portion 12, there is a certain distance between the volute and the pressing portion 11 for the pressing device of the machine tool to extend and press the pressing portion 11. In another embodiment, the number of the assembly holes 22 can also be four, eight or other numbers. In another embodiment, the assembly holes 22 are counterbore holes, and the length of the support portion 12 can be greater than or equal to the length of the fitting 2.

[0039] The fitting 2 is provided with a third through hole 23, and the support portion 12 is provided with a third threaded hole 123 matching the third through hole 23. A screw passes through the third through hole 23 and is threadedly connected to the third threaded hole 123. The threaded connection between the fitting 2 and the support portion 12 is not easy to loosen, and can achieve a relatively high connection strength. It not only ensures the stability of the connection, but also improves the load-bearing capacity of the entire structure, has relatively high safety performance, and is convenient for assembly and disassembly. Specifically, the number of the third through holes 23 is four, symmetrically arranged in a rhombus shape in the middle of the fitting 2 to further enhance the fastening property, and the third threaded holes 123 correspond to the third through holes 23 one by one. In another embodiment, the third through holes 23 can also be symmetrically arranged at the left and right ends or the upper and lower ends of the fitting 2. In another embodiment, the number of the third through holes 23 can also be three, five or other numbers, and the third threaded holes 123 correspond to them one by one.

[0040] Please refer to Figure 3 and Figure 4 simultaneously. The process of fixing the volute of the present application to the positioning fixture is as follows: After assembling the pressing portion 11, the support portion 12 and the positioning block 13 together, the pressing device of the machine tool presses the pressing portion 11. The fitting 2 is threadedly connected to the volute 100 through the assembly holes 22. Then, the volute 100 is inserted into the positioning block 13 through the positioning holes 21 of the fitting 2, and the support portion 12 is threadedly connected to the fitting 2 to complete the vertical fixing of the volute 100 on the positioning fixture and make the air outlet of the volute 100 face the direction of the cutting tool of the machine tool for convenient processing.

[0041] The specific examples described above further elaborate on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above description is only for the specific embodiments of the present utility model and does not limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for processing a volute, characterized in that: A fixing seat, the fixing seat comprising a pressing portion, a supporting portion and a positioning block, the pressing portion being arranged horizontally, the supporting portion being arranged vertically at the top of the pressing portion, and the positioning block being arranged parallel to the supporting portion; An assembly part is provided with a positioning hole and an assembly hole for connecting with the threaded hole of the volute, the positioning hole is sleeved on the positioning block, the assembly part is arranged parallel to the supporting part, and the assembly part is suspended above the clamping part.

2. The positioning fixture for processing a volute according to claim 1, characterized in that: The supporting portion is arranged in the middle of the pressing portion to form an inverted T-shaped structure.

3. The positioning fixture for processing a volute according to claim 1, characterized in that: The pressing portion and the supporting portion are detachably connected.

4. The positioning fixture for processing a volute according to claim 3, characterized in that: The pressing portion is provided with a first through hole, the supporting portion is provided with a first threaded hole, and a screw passes through the first through hole and is threadedly connected with the first threaded hole.

5. The positioning fixture for processing a volute according to claim 4, characterized in that: The first through hole is a countersunk hole.

6. The positioning fixture for processing a volute according to any one of claims 1 to 5, characterized in that: The positioning block is detachably connected to the supporting portion.

7. The positioning fixture for processing a volute according to claim 6, characterized in that: The support portion is provided with a groove, and the positioning block is arranged in the groove and protrudes from the groove.

8. The positioning fixture for processing a volute according to claim 6, characterized in that: The positioning block is provided with a second through hole, the supporting portion is provided with a second threaded hole matching the second through hole, and the screw passes through the second through hole and is threadedly connected with the second threaded hole.

9. The positioning fixture for processing a volute according to claim 5, characterized in that: The length of the positioning hole is equal to the length of the positioning block, and the width of the positioning hole is greater than the width of the positioning block.

10. The positioning fixture for processing a volute according to any one of claims 1 to 5, characterized in that: The assembly part is provided with a third through hole, the support part is provided with a third threaded hole, and the screw passes through the third through hole and is threadedly connected with the third threaded hole.

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