Impeller blade turning device

Abstract

The utility model discloses an impeller blade turning device which comprises a base and a circular turning cover plate, an outer spigot matched with an impeller is arranged at the center of the base, a plurality of first mounting holes are formed in the base, a plurality of convex branches corresponding to blades are arranged on the outer circumferential surface of the turning cover plate, and the convex branches are arranged on the outer circumferential surface of the turning cover plate. The convex branches and blades of the impeller to be turned are fixed through the elastic fastening devices, the turning cover plate is further provided with second mounting holes corresponding to the first mounting holes, the impeller to be turned is mounted between the base and the turning cover plate, and the fastening devices are matched with the first mounting holes and the second mounting holes to achieve fixation of the impeller. The blade top of the impeller blade can be independently machined, the blade is kept stable in the machining process, and the machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of impeller processing equipment, in particular to an impeller blade turning device. Background Art

[0002] When processing impeller blades, vortices will be generated at the blade tips. If the blade tips are smoother, the viscous resistance of the airflow will be smaller, and the efficiency of compressed air will be higher. The higher the processing accuracy of the blade tips, the smaller the deformation, the better the adjustment of the dynamic and static clearance, the higher the safety performance of the impeller operation, and the efficiency of compressed air will also be improved accordingly. It can be seen that the processing accuracy of the blade tips affects the operation of the entire impeller. At present, the processing method of the blade tips is to assemble all 18 levels of impellers and then process the blade tips together, but this processing takes too long, about 3 months, and the machine tool occupies too long, which is inefficient.

[0003] Therefore, there is an urgent need for a device that can process the blade tip alone, and it is necessary to solve the technical problem of excessive vibration of the blade during the cutting process, reduce the deformation of the blade during the blade tip turning process, and ensure the processing accuracy. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an impeller blade turning device, which can process the blade top of the impeller blade separately, and the blade remains stable during the processing, thereby ensuring the processing accuracy. Through the use of this device, the processing requirements of the impeller blade tops at all levels can be met.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An impeller blade turning device comprises a base and a circular turning cover plate, wherein an outer stop cooperating with an impeller is provided at the center of the base, a plurality of first mounting holes are provided on the base, a plurality of protrusions corresponding to the blades are provided on the outer circumferential surface of the turning cover plate, the protrusions are fixed to the blades of the impeller to be turned by an elastic fastening device, a second mounting hole corresponding to the first mounting hole is also provided on the turning cover plate, the impeller to be turned is installed between the base and the turning cover plate, and the impeller is fixed by the cooperation of the fastening device with the first mounting hole and the second mounting hole.

[0007] According to a further technical solution, the fastening device comprises a stud and a nut, wherein the stud is sequentially inserted into the second mounting hole, the pull rod hole of the impeller, and the first mounting hole, and the stud is locked with a nut to achieve fastening.

[0008] According to a further technical solution, the protruding branches are arranged on the outer circumferential surface of the turning cover plate at equal intervals along the diameter direction of the turning cover plate.

[0009] According to a further technical solution, the number of the protruding branches is 64, which is applicable to impellers of levels 1 to 17 and has a wide range of applications.

[0010] According to a further technical solution, the elastic fastening device comprises a rubber rope, a rubber ring or other similar elastic fastening devices.

[0011] According to a further technical solution, the base is circular and has a stepped shape near the outer ring, so as to reserve sufficient processing space for the blades.

[0012] According to a further technical solution, a plurality of notches are provided on the outer circumference of the base, and the turning device is fixed on the machine tool by passing a T-shaped slide block through the notches and the T-shaped slots on the machine tool. Beneficial Effects

[0013] Compared with the prior art, the utility model has the following significant advantages:

[0014] 1. The utility model provides convex branches on the cover plate to elastically fix the convex branches and the blades, which can greatly reduce the vibration of the blades during the cutting process, greatly reduce the deformation of the blades during the process of turning the blade top, and ensure the processing accuracy.

[0015] 2. After the turning device of the utility model is installed on the lathe, different impellers can be directly replaced without replacing the device. If the number of convex branches selected is 64, the turning of all 1-17 level impeller blades can be completed directly, which greatly reduces the cost of tooling and fixtures and greatly improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the main sectional view of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 This is the front view of the turned cover;

[0019] Figure 4 for Figure 3 AA view in;

[0020] Figure 5 This is the main view of the base;

[0021] Figure 6 for Figure 5 AA view in;

[0022] Figure 7 It is a schematic diagram of the use of the utility model;

[0023] Markings in the figure: 1. base, 2. turning cover plate, 3. external stop, 4. first mounting hole, 5. protruding branch, 6. second mounting hole, 7. stud, 8. nut, 9. impeller, 10. blade, 11. fastening device, 12. turning tool, 13. turning processing area, 14. elastic fastening device, 15. notch. DETAILED DESCRIPTION

[0024] The utility model is described in detail below in conjunction with the embodiments and application examples. It should be pointed out that the embodiments are preferred implementations of the utility model, rather than limiting the scope of protection claimed for the utility model, and the application and use method of the utility model are not limited to the application examples. Example

[0025] like Figure 1-7 As shown, an impeller blade turning device includes a base 1 and a circular turning cover plate 2, wherein an outer stop 3 cooperating with an impeller 9 is provided at the center of the base 1, a plurality of first mounting holes 4 are provided on the base 1, a plurality of protrusions 5 corresponding to blades 10 are provided on the outer circumferential surface of the turning cover plate 2, the protrusions 5 are fixed to the blades 10 of the impeller 9 to be turned by an elastic fastening device 14, a second mounting hole 6 corresponding to the first mounting hole 4 is further provided on the turning cover plate 2, the impeller 9 to be turned is installed between the base 1 and the turning cover plate 2, and the impeller 9 is fixed by the fastening device 11 cooperating with the first mounting hole 4 and the second mounting hole 6.

[0026] The fastening device 11 comprises a stud 7 and a nut 8. The stud 7 is inserted into the second mounting hole 6, the rod hole of the impeller 9 and the first mounting hole 4 in sequence, and the stud is locked with a nut to achieve fastening.

[0027] The protruding branches 5 are arranged on the outer circumferential surface of the turning cover plate 2 at equal intervals along the diameter direction of the turning cover plate.

[0028] The number of the protruding branches 5 is 64, which is applicable to impellers of levels 1 to 17 and has a wide range of applications.

[0029] The elastic fastening device 14 includes a rubber rope, a rubber ring or other similar elastic fastening devices.

[0030] The base 1 is circular, and the base is stepped near the outer circle to reserve sufficient processing space for the blades. A plurality of notches 15 are provided on the outer circumference of the base, and the turning device is fixed on the machine tool by passing a T-shaped slide through the notches and the T-shaped slots on the machine tool.

[0031] The working process of the utility model is as follows:

[0032] 1. First fix the base on the machine tool, then place the impeller with blades on the base through the outer stop on the turning base, insert the studs into the first mounting hole on the cover plate and the pull rod hole of the impeller in turn, tighten and fix them in the second mounting hole on the base, and press the cover plate with nuts on the studs.

[0033] 2. Align each blade on the impeller with the convex branch on the turning cover plate, use elastic fastening devices such as rubber ropes to tie the blades to the convex branches above, and then use a turning tool to turn the top of the blade.

Claims

1. An impeller blade turning device, characterized in that: It comprises a base and a circular turning cover plate, wherein an outer stop cooperating with an impeller is provided at the center of the base, a plurality of first mounting holes are provided on the base, a plurality of convex branches corresponding to the blades are provided on the outer circumferential surface of the turning cover plate, the convex branches are fixed to the blades of the impeller to be turned by an elastic fastening device, a second mounting hole corresponding to the first mounting hole is also provided on the turning cover plate, the impeller to be turned is installed between the base and the turning cover plate, and the impeller is fixed by the cooperation of the fastening device with the first mounting hole and the second mounting hole.

2. The impeller blade turning device according to claim 1, characterized in that: The fastening device comprises a stud and a nut.

3. The impeller blade turning device according to claim 2, characterized in that: The stud is inserted into the second mounting hole, the pull rod hole of the impeller and the first mounting hole in sequence, and the stud is locked with a nut to achieve fastening.

4. The impeller blade turning device according to claim 1, characterized in that: The protruding branches are arranged on the outer circumferential surface of the turning cover plate at equal intervals along the diameter direction of the turning cover plate.

5. The impeller blade turning device according to claim 1 or 4, characterized in that: The number of the protruding branches is 64.

6. The impeller blade turning device according to claim 1, characterized in that: The elastic fastening device comprises a rubber rope and a rubber ring.

7. The impeller blade turning device according to claim 1, characterized in that: The base is circular.

8. The impeller blade turning device according to claim 1 or 7, characterized in that: The base is in a step shape near the outer ring.

9. The impeller blade turning device according to claim 1, characterized in that: A plurality of notches are arranged on the outer circumference of the base, and the turning device is fixed on the machine tool by passing a T-shaped slide block through the notches and the T-shaped slots on the machine tool.

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