Scroll plate machining tool

Abstract

The invention provides a scroll plate machining tool, relates to the technical field of scroll plates, and aims to solve the technical problem that one or more of the flatness, the profile tolerance, the location degree and the perpendicularity of a scroll plate do not meet requirements due to internal stress of the scroll plate caused by a scroll plate machining tool in the prior art. A scroll plate machining tool comprises a base, a first mounting plate, a second mounting plate and a ventilation plate, the first mounting plate is connected with the base, a first through hole is formed in the first mounting plate, the ventilation plate is connected with the first through hole and divides the first through hole into a first air cavity and a second air cavity which are communicated through a ventilation hole formed in the ventilation plate, and an air inlet hole is formed in the first mounting plate; the second mounting plate is detachably connected to the top end of the first mounting plate, a second through hole is formed in the second mounting plate, a protruding part is arranged on the inner wall of the second through hole in the circumferential direction, and when a workpiece is placed at the top end of the first mounting plate, the bottom end of the protruding part abuts against the upper end face of the workpiece, and the first through hole and the second through hole form a closed space.

Description

Technical Field

[0001] The invention relates to the technical field of scroll disks, and in particular to a scroll disk processing tool. Background Art

[0002] The scroll disk mainly includes a base and a scroll part. The scroll part is arranged at the top of the base. Three lugs are arranged circumferentially on the base. Each lug is provided with a through hole, and the bottom of the base is provided with several grooves. The scroll part of the scroll disk has high requirements for flatness, contour, position between the through hole and verticality with the base. The scroll disk is generally made by milling. During the processing, the scroll disk is clamped circumferentially by a fixture. This clamping method will cause internal stress in the scroll disk. Therefore, the scroll disk is processed under certain internal stress. Before the fixture releases the scroll disk, the flatness, contour, position and verticality of the scroll part profile can meet the requirements. However, when the scroll disk is taken out of the fixture, the internal stress is released. At this time, the flatness, contour, position and verticality of the scroll part profile change, which may not meet the requirements, thereby affecting the processing accuracy and qualified rate. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a scroll disk processing tool to solve the technical problem that the scroll disk processing tool in the prior art causes internal stress in the scroll disk, resulting in one or more of the flatness, contour, position and verticality of the scroll disk after processing not meeting the requirements.

[0004] In order to solve the above technical problems, the present invention provides a vortex disk processing tooling, including a base, a first mounting plate, a second mounting plate and an air permeable plate, the first mounting plate being connected to the base, a vertical first through hole being provided in the middle of the first mounting plate, the outer wall of the air permeable plate being connected to the inner wall of the first through hole, the air permeable plate dividing the first through hole into a first air cavity located above the air permeable plate and a second air cavity located below the air permeable plate, the first air cavity and the second air cavity being connected through the air permeable hole provided on the air permeable plate, an air inlet hole connected to the second air cavity being provided on the first mounting plate, the air inlet hole being connected to an external air source, the second mounting plate being detachably connected to the top end of the first mounting plate, a vertical second through hole for accommodating a workpiece being provided in the middle of the second mounting plate, a protrusion being provided on the inner wall of the second through hole along the circumferential direction, when the workpiece is placed on the top end of the first mounting plate, the bottom end of the protrusion abuts against the upper end surface of the workpiece and the first through hole and the second through hole form an enclosed space.

[0005] After adopting the above structure, a vortex disk processing tool of the present invention has the following advantages: the vortex disk workpiece to be processed is first processed into the bottom end face of the base and various through holes, and then the above workpiece is placed on the first mounting plate and the base part is located in the second through hole, and the bottom end of the protrusion abuts against the upper end face of the base part of the workpiece. At this time, the first through hole and the second through hole form a closed space, and the air source passes high-pressure gas through the air inlet. The high-pressure gas enters and fills the first air cavity and the second through hole through the second air cavity and the air vent. The high-pressure gas automatically straightens the workpiece, and as long as the gas pressure is greater than the milling force of the milling cutter on the workpiece during processing, the workpiece can be fixed by the high-pressure gas to prevent the workpiece from moving during processing. Moreover, this fixing method will not cause internal stress in the workpiece. After the vortex disk is processed and disassembled, the flatness, contour, position and verticality will not change, thereby improving the processing accuracy and qualified rate of the vortex disk.

[0006] As an improvement, the air source is connected to the air inlet through an air pipe, and a pressure-stabilizing valve is connected to the air pipe. With this structure, the stability of the air pressure in the enclosed space is improved by setting a pressure-stabilizing valve, further improving the processing accuracy and qualified rate of the vortex disk.

[0007] As an improvement, a pressure sensor connected to the second air cavity is connected to the first mounting plate; with this structure, the air pressure in the enclosed space is monitored by setting a pressure sensor to ensure that the air pressure is stable and can be greater than the milling force of the milling cutter.

[0008] As an improvement, a number of guide rods are connected to the first mounting plate, and a guide portion exposed above the first mounting plate is provided at the upper end of each guide rod, and at least one guide surface is provided on the guide portion which is in contact with the inner hole of the workpiece; with this structure, the position of the guide rod relative to the air permeable plate is fixed, and the guide rod guides the workpiece, so that the position of the workpiece relative to the air permeable plate is accurate, thereby preventing the workpiece placement position deviation from causing poor processing accuracy.

[0009] As an improvement, the present invention also includes a base plate, the base is connected to the base plate, a plurality of first cylinders are connected to the base, each of the first cylinders is connected to a guide rod, and the guide rod is vertically slidably connected to the base and the first mounting plate; with this structure, after the milling process is completed, there may be cutting fluid or cutting powder between the guide surface and the inner hole wall of the workpiece, making it difficult to separate the guide part from the workpiece, and by driving the guide rod to move by the first cylinder, the guide part can be separated from the workpiece, making it easy to remove the workpiece.

[0010] As an improvement, the present invention also includes a base plate, the base is connected to the base plate, a plurality of second cylinders are connected to the base plate, each of the second cylinders is connected to a connecting column, the connecting column is vertically slidably connected to the base and the first mounting plate, the upper end of the connecting column is connected to a limiting column, the upper end of the limiting column is provided with a limiting portion, the limiting portion is a cone with an upper outer diameter greater than a lower outer diameter, a plurality of mounting holes are provided in the second mounting plate, each mounting hole is provided with an elastic inner expansion pin, the lower end of the elastic inner expansion pin is fixedly connected to the first mounting plate, the upper end of the elastic inner expansion pin is provided with a conical hole with an upper inner diameter greater than a lower inner diameter, the limiting portion is vertically slidably connected to the conical hole, and when the outer wall of the limiting portion abuts against the inner wall of the conical hole, the elastic inner expansion pin expands so that the first mounting plate and the second mounting plate are fixedly connected. Fixed; with this structure, the workpiece is placed in the specified position before processing and then the second mounting plate is placed, and then the second cylinder drives the connecting column and the limiting column to move downward, and the limiting part enters the tapered hole to make the elastic internal expansion pin expand, and the elastic internal expansion pin fixes the second mounting plate to the first mounting plate; after the processing is completed, the second cylinder drives the connecting column and the limiting column to move upward, and the limiting part disengages from the tapered hole to make the elastic internal expansion pin shrink, so that the second mounting plate is separated from the first mounting plate. At this time, the workpiece can be removed by removing the second mounting plate. The operation is simple and easy to use, not only realizing the detachable connection between the second mounting plate and the first mounting plate, but also making the protrusion abut against the workpiece and connecting the second mounting plate to the first mounting plate without generating internal stress on the workpiece.

[0011] As an improvement, a first sealing ring arranged around the first through hole is provided between the bottom end of the first mounting plate and the top end of the base; this structure improves the sealing between the bottom end of the first mounting plate and the top end of the base to prevent air leakage.

[0012] As an improvement, a second sealing ring arranged around the second through hole is provided between the bottom end of the second mounting plate and the top end of the first mounting plate; this structure improves the sealing between the bottom end of the second mounting plate and the bottom end of the first mounting plate to prevent air leakage.

[0013] As an improvement, a third sealing ring is provided at the bottom end of the protrusion and is arranged around the edge of the protrusion; this structure improves the sealing between the bottom end of the protrusion and the upper end surface of the workpiece to prevent air leakage.

[0014] As an improvement, there are a number of air holes and the air holes are densely distributed in a matrix on the air permeable plate. With this structure, the air intake is dispersed through the air holes densely distributed in a matrix, preventing the huge pressure difference generated when the air is just taken in from causing the workpiece to tilt, thereby improving the processing accuracy and qualification rate of the vortex disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the connecting column of the present invention.

[0016] Figure 2 for Figure 1A partial enlarged view of part A in the middle.

[0017] Figure 3 It is a cross-sectional view of the guide rod of the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the first mounting plate part in the present invention.

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the scroll disk.

[0021] Figure numerals: 1. base; 2. first mounting plate; 3. second mounting plate; 4. air permeable plate; 5. first through hole; 51. first air cavity; 52. second air cavity; 6. air permeable hole; 7. air inlet hole; 8. second through hole; 9. protrusion; 10. pressure-stabilizing valve; 11. pressure sensor; 12. guide rod; 13. guide part; 131. guide surface; 14. bottom plate; 15. first cylinder; 16. second cylinder; 17. connecting column; 18. limiting column; 19. limiting part; 20. mounting hole; 21. elastic inner expansion pin; 22. tapered hole; 23. first sealing ring; 24. second sealing ring; 25. third sealing ring; 26. fourth sealing ring; 27. switch; 28. groove. DETAILED DESCRIPTION

[0022] A scroll processing tooling of the present invention is described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, a scroll processing tooling includes a base 1, a first mounting plate 2, a second mounting plate 3 and a breathable plate 4, the first mounting plate 2 is connected to the base 1, a vertical first through hole 5 is provided in the middle of the first mounting plate 2, the outer wall of the breathable plate 4 is connected to the inner wall of the first through hole 5, in fact, the breathable plate 4 and the first mounting plate 2 are integrally formed, and the entire outer wall of the breathable plate 4 is connected to the entire inner wall of the first through hole 5; the breathable plate 4 divides the first through hole 5 into a first air cavity 51 located above the breathable plate 4 and a second air cavity 52 located below the breathable plate 4, the first air cavity 51 is connected to the second air cavity 52 through the breathable hole 6 provided on the breathable plate 4, and the first air cavity 51 and the second air cavity 52 are only connected through the breathable hole 6, and as shown Figure 1 and Figure 3 As shown, there are a plurality of air holes 6 and the plurality of air holes 6 are densely distributed in a matrix on the air permeable plate 4. In addition, a first sealing ring 23 is disposed around the first through hole 5 between the bottom end of the first mounting plate 2 and the top end of the base 1.

[0024] like Figure 4As shown, the first mounting plate 2 is provided with an air inlet 7 connected to the second air cavity 52, and the air inlet 7 is connected to an external air source. Specifically, the air source is connected to the air inlet 7 through an air pipe, and the air pipe is connected to a pressure-stabilizing valve 10. In this embodiment, there are two air inlet holes 7 and both are arranged on the side wall of the first mounting plate 2, and the pressure-stabilizing valve 10 is fixedly connected to the side wall of the base 1. In addition, a switch 27 is also connected to the side wall of the base 1 for controlling the on and off of the air intake; Figure 5 As shown, a pressure sensor 11 communicating with the second air cavity 52 is connected to the first mounting plate 2 , and the pressure sensor 11 is also connected to the side wall of the first mounting plate 2 .

[0025] like Figure 1 and Figure 3 As shown, the second mounting plate 3 is detachably connected to the top of the first mounting plate 2, and a vertical second through hole 8 for accommodating a workpiece is provided in the middle of the second mounting plate 3. A protrusion 9 is provided on the inner wall of the second through hole 8 along the circumferential direction. In this embodiment, the protrusion 9 is located at the upper part of the inner wall of the second through hole 8 and its upper end surface is flush with the upper end surface of the second mounting plate 3. The protrusion 9 is integrally formed with the second mounting plate 3. When the workpiece is placed on the top of the first mounting plate 2, the bottom end of the protrusion 9 abuts against the upper end surface of the workpiece and the first through hole 5 and the second through hole 8 form a closed space; specifically, the scroll structure is as follows Figure 6 As shown, the scroll workpiece placed on the first mounting plate 2 before processing only has the bottom end face, three lugs and through holes on the lugs processed, wherein the three lugs are placed on the top of the first mounting plate 2, and the bottom end of the protrusion 9 is against the upper end face of the workpiece base; in addition, a second sealing ring 24 arranged around the second through hole 8 is provided between the bottom end of the second mounting plate 3 and the top end of the first mounting plate 2, and a third sealing ring 25 arranged around the edge of the protrusion 9 is provided at the bottom end of the protrusion 9, and the third sealing ring 25 is arranged between the bottom end of the protrusion 9 and the upper end face of the workpiece. Figures 1 to 4 As described above, grooves 28 are provided on both sides of the first mounting plate 2 to facilitate taking the second mounting plate 3 .

[0026] like Figure 3 As shown, a plurality of guide rods 12 are connected to the first mounting plate 2. The upper end of each guide rod 12 is provided with a guide portion 13 exposed above the first mounting plate 2. The guide portion 13 is also in the second through hole 8. Figure 5 As shown, in this embodiment, three guide rods 12 (guide parts 13) are arranged around the air permeable plate 4, and the guide parts 13 are provided with at least one guide surface 131 which is in contact with the inner hole of the workpiece, and the inner hole of the workpiece is the through hole on the lug. Figure 3As shown, the present invention also includes a bottom plate 14, a base 1 is connected to the bottom plate 14, a plurality of first cylinders 15 are connected to the base 1, a avoidance groove is set at the bottom end of the base 1 to accommodate the first cylinders 15, each first cylinder 15 is connected to a guide rod 12, the guide rod 12 is vertically slidably connected in the base 1 and the first mounting plate 2, and the guide rod 12 and the guide portion 13 are integrally formed; in this embodiment, when the piston rod of the first cylinder 15 is extended, that is, the guide portion 13 is in the upper position, it is in the loose state, and when the piston rod of the first cylinder 15 is retracted, that is, the guide portion 13 is in the lower position, it is in the working state. In addition, each guide portion 13 at the top end of the first mounting plate 2 is provided with a fourth sealing ring 26 arranged around the guide portion 13, and the fourth sealing ring 26 is arranged between the top end of the first mounting plate 2 and the bottom end of the workpiece lug.

[0027] In addition, if Figure 1 and Figure 2 As shown, a plurality of second cylinders 16 are connected to the bottom plate 14. Similarly, a avoidance groove is provided at the bottom end of the base 1 to accommodate the second cylinders 16. Each second cylinder 16 is connected to a connecting column 17. The connecting column 17 is vertically slidably connected to the base 1 and the first mounting plate 2. The upper end of the connecting column 17 is connected to a limiting column 18. A limiting portion 19 is provided at the upper end of the limiting column 18. The limiting portion 19 is in a conical shape with an upper end outer diameter greater than a lower end outer diameter. In this embodiment, the limiting column 18 and the limiting portion 19 are bolts. A plurality of mounting holes 20 are provided in the second mounting plate 3. The mounting holes 20 and the limiting portions 19 are provided with a plurality of mounting holes 20. 19 corresponds one to one, and each mounting hole 20 is provided with an elastic inner expansion pin 21, the lower end of the elastic inner expansion pin 21 is fixedly connected in the first mounting plate 2, and the upper end of the elastic inner expansion pin 21 is provided with a tapered hole 22 whose inner diameter is larger than that of the lower end, and the limiting portion 19 is vertically slidably connected in the tapered hole 22. When the outer wall of the limiting portion 19 abuts against the inner wall of the tapered hole 22, the elastic inner expansion pin 21 expands to fix the first mounting plate 2 and the second mounting plate 3, and after the limiting portion 19 leaves the tapered hole 22 upward, the elastic inner expansion pin 21 contracts to separate the first mounting plate 2 from the second mounting plate 3.

[0028] The scroll disk workpiece to be processed is first processed to have the bottom end face of the base and various through holes, and then the above-mentioned workpiece is placed on the first mounting plate 2 and the base part is located in the second through hole 8. The bottom end of the protrusion 9 abuts against the upper end face of the base part of the workpiece. At this time, the first through hole 5 and the second through hole 8 form a closed space, and high-pressure gas is introduced from the air source through the air inlet 7. The high-pressure gas enters through the second air cavity 52 and the air vent 6 and fills the first air cavity 51 and the second through hole 8. The high-pressure gas automatically straightens the workpiece, and as long as the gas pressure is greater than the milling force of the milling cutter on the workpiece during the processing, the workpiece can be fixed by the high-pressure gas to prevent the workpiece from moving during the processing. Moreover, this fixing method will not cause internal stress inside the workpiece. After the scroll disk is processed and disassembled, the flatness, contour, position and verticality will not change, thereby improving the processing accuracy and qualified rate of the scroll disk.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned one embodiment, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A scroll processing tool, characterized in that: The invention comprises a base (1), a first mounting plate (2), a second mounting plate (3) and a breathable plate (4), wherein the first mounting plate (2) is connected to the base (1), a vertical first through hole (5) is provided in the middle of the first mounting plate (2), an outer wall of the breathable plate (4) is connected to an inner wall of the first through hole (5), the breathable plate (4) divides the first through hole (5) into a first air cavity (51) located above the breathable plate (4) and a second air cavity (52) located below the breathable plate (4), and a gas passage (51) and a second gas passage (52) are provided on the breathable plate (4) to separate the first air cavity (51) and the second air cavity (52). The first mounting plate (2) is connected to an air vent (6), an air inlet hole (7) connected to the second air cavity (52) is provided on the first mounting plate (2), the air inlet hole (7) is connected to an external air source, the second mounting plate (3) is detachably connected to the top of the first mounting plate (2), a vertical second through hole (8) for accommodating a workpiece is provided in the middle of the second mounting plate (3), a protrusion (9) is provided on the inner wall of the second through hole (8) along the circumferential direction, when the workpiece is placed on the top of the first mounting plate (2), the bottom end of the protrusion (9) abuts against the upper end surface of the workpiece and the first through hole (5) and the second through hole (8) form a closed space.

2. The scroll processing tool according to claim 1, characterized in that: The air source is connected to the air inlet (7) via an air pipe, and the air pipe is connected to a pressure-stabilizing valve (10).

3. The scroll processing tool according to claim 1, characterized in that: The first mounting plate (2) is connected to a pressure sensor (11) which is in communication with the second air cavity (52).

4. The scroll processing tool according to claim 1, characterized in that: A plurality of guide rods (12) are connected to the first mounting plate (2), each guide rod (12) having a guide portion (13) exposed above the first mounting plate (2) at its upper end, the guide portion (13) being provided with at least one guide surface (131) in contact with an inner hole of a workpiece.

5. The scroll processing tool according to claim 4, characterized in that: It also comprises a bottom plate (14), the base (1) being connected to the bottom plate (14), the base (1) being connected to a plurality of first cylinders (15), each of the first cylinders (15) being connected to a guide rod (12), the guide rod (12) being connected to the base (1) and the first mounting plate (2) in a vertically slidable manner.

6. The scroll processing tool according to claim 1, characterized in that: The invention also comprises a bottom plate (14), the base (1) being connected to the bottom plate (14), a plurality of second cylinders (16) being connected to the bottom plate (14), each of the second cylinders (16) being connected to a connecting column (17), the connecting column (17) being connected to the base (1) and the first mounting plate (2) in a vertical sliding manner, the upper end of the connecting column (17) being connected to a limiting column (18), the upper end of the limiting column (18) being provided with a limiting portion (19), the limiting portion (19) being in a conical shape with an outer diameter of the upper end being larger than an outer diameter of the lower end, and the second mounting plate (3) being provided with a There are a plurality of mounting holes (20), each of which is provided with an elastic inner expansion pin (21), the lower end of the elastic inner expansion pin (21) is fixedly connected to the first mounting plate (2), the upper end of the elastic inner expansion pin (21) is provided with a tapered hole (22) whose inner diameter is larger than that of the lower end, the limiting portion (19) is vertically slidably connected to the tapered hole (22), and when the outer wall of the limiting portion (19) abuts against the inner wall of the tapered hole (22), the elastic inner expansion pin (21) expands to fix the first mounting plate (2) to the second mounting plate (3).

7. The scroll processing tool according to claim 1, characterized in that: A first sealing ring (23) is provided between the bottom end of the first mounting plate (2) and the top end of the base (1) and is arranged around the first through hole (5).

8. The scroll processing tool according to claim 1, characterized in that: A second sealing ring (24) is provided between the bottom end of the second mounting plate (3) and the top end of the first mounting plate (2) and is arranged around the second through hole (8).

9. The scroll processing tool according to claim 1, characterized in that: A third sealing ring (25) is provided at the bottom end of the protrusion (9) and is arranged around the edge of the protrusion (9).

10. The scroll processing tool according to claim 1, characterized in that: The ventilation holes (6) are present in a plurality and the plurality of ventilation holes (6) are densely distributed on the ventilation plate (4) in a matrix manner.

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