CN208773382U - A kind of inner hole swelling fixture for wind wheel dynamic balancing measurement - Google Patents

Abstract

The utility model discloses a kind of inner hole swelling fixtures for wind wheel dynamic balancing measurement, including the clamp shaft in main body and main body, the clamp shaft is hollow shaft, stayed mast is fitted in the clamp shaft, tapered expansion block is connected on front side of the stayed mast, the conical surface being wherein provided between clamp shaft inside on the outside of the taper expansion block among oblique rear side, the stayed mast rear side are connected with pulling force cylinde；The fixture realizes fixture swelling using clamp shaft cooperation taper expansion block and unclamps workpiece, remove the trouble for installing and uninstalling screw from, and crossing Cheng Qian in swelling due to inner hole of workpiece and clamp shaft is interference fit, has enough spaces to avoid eccentricity issues, test result is more accurate.

Description

A kind of inner hole swelling fixture for wind wheel dynamic balancing measurement

Technical field

The utility model relates to wind wheel technical field, especially a kind of inner hole swelling for wind wheel dynamic balancing measurement is pressed from both sides Tool.

Background technique

Wind wheel will test dynamic balancing, and wind wheel is needed to be mounted on test machine, be specifically first fixed on key screw workpiece It is artificial before testing to need that screw is installed on workpiece on fixture, and by the groove in screw line-up jig shaft, screw is tightened, To prevent the displacement dislocation of workpiece opposed jaw.And in practice, it has been found that inner hole of workpiece and clamp shaft are easy to exist after installation screw Bias directly affects test accuracy.

Summary of the invention

For overcome the deficiencies in the prior art, the utility model provides a kind of inner hole swelling for wind wheel dynamic balancing measurement Fixture.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of inner hole swelling fixture for wind wheel dynamic balancing measurement, including the clamp shaft in main body and main body, the folder Tool axis is hollow shaft, and stayed mast is fitted in the clamp shaft, tapered expansion block is connected on front side of the stayed mast, wherein the cone The conical surface being provided among oblique rear side between on the outside of degree expansion block and on the inside of clamp shaft, the stayed mast rear side are connected with pulling force gas Cylinder.

As a preference, guide bracket is provided on rear side of the main body.

As a preference, the pulling force rod rear end is provided with round fixture block, and the pulling force cylinde is by fastener and draws Power bar connection, wherein being provided with convex shape slot on the fastener blocks round fixture block.

The beneficial effects of the utility model are: the fixture realizes fixture swelling and release using clamp shaft cooperation taper expansion block Workpiece removes the trouble for installing and uninstalling screw from, and crossing Cheng Qian in swelling due to inner hole of workpiece and clamp shaft is interference fit, There are enough spaces to avoid eccentricity issues, test result is more accurate.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the perspective view of the utility model；

Fig. 2 is the cross-sectional view of the utility model.

Specific embodiment

It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood The utility model is further elaborated.For the thorough explanation present invention, some spies can be related in following description Determine details.And in these no specific details, the invention can still be realized, i.e., the technical staff in fields uses this These of place describe and state that the others skilled in the art into fields can more effectively introduce their work essence.

Referring to Fig.1, Fig. 2, a kind of inner hole swelling fixture for wind wheel dynamic balancing measurement, including in main body 1 and main body 1 Clamp shaft 2, the clamp shaft 2 are hollow shaft, are fitted with stayed mast 3 in the clamp shaft 2, are connected on front side of the stayed mast 3 Taper expansion block 4, wherein the conical surface among oblique rear side is provided between 2 inside of 4 outside of the taper expansion block and clamp shaft, it is described Pulling force cylinde 5 is connected on rear side of stayed mast 3.When specific works, workpiece 9 is manually put into clamp shaft 2, the external force of pulling force cylinde 5 It pulls stayed mast 3 and taper expansion block 4 is driven to move backward, and the conical surface between taper expansion block 4 and clamp shaft 2 forces clamp shaft 2 Dilatancy, so that swelling inner hole of workpiece, realizes the firm installation of wind wheel to be tested.

It is provided with guide bracket 6 on rear side of the main body 1, for assisting stablizing stayed mast 3 in 3 activity of stayed mast, avoids drawing Power bar 3 is deviated because of vibration or other reasons or stress distribution inequality leads to bending.

3 rear end of stayed mast is provided with round fixture block 7, and the pulling force cylinde 5 is connect by fastener 8 with stayed mast 3, Described in be provided with convex shape slot 81 on fastener 8 and block round fixture block 7, guarantee it is firm enough when pulling force cylinde 5 holds stayed mast 3 and Stayed mast 3 is not influenced to follow 2 rotation of clamp shaft or rotate by a small margin.

According to above-mentioned principle, the utility model can also be made appropriate changes and modifications to the above embodiments.Therefore, The utility model is not limited to specific embodiment disclosed and described above, to some modifications and changes of the utility model It should also be as falling into the protection scope of the claims of the present utility model.

By it was verified that this fixture is easy to use, being suitable for axial aperture structure is cylindric and with metal axle sleeve Wind wheel test wind wheel computing ballance correction.

Claims (3)

1. a kind of inner hole swelling fixture for wind wheel dynamic balancing measurement, including the clamp shaft (2) in main body (1) and main body (1), It is characterized by: the clamp shaft (2) is hollow shaft, it is fitted with stayed mast (3) in the clamp shaft (2), the stayed mast (3) Front side connects tapered expansion block (4), wherein be provided between clamp shaft (2) inside on the outside of the taper expansion block (4) it is oblique after The conical surface among side, stayed mast (3) rear side are connected with pulling force cylinde (5).

2. a kind of inner hole swelling fixture for wind wheel dynamic balancing measurement according to claim 1, it is characterised in that: described Guide bracket (6) are provided on rear side of main body (1).

3. a kind of inner hole swelling fixture for wind wheel dynamic balancing measurement according to claim 1, it is characterised in that: described Stayed mast (3) rear end is provided with round fixture block (7), and the pulling force cylinde (5) is connect by fastener (8) with stayed mast (3), wherein Convex shape slot (81), which is provided with, on the fastener (8) blocks round fixture block (7).