CN112413084A

CN112413084A - Cam installation component

Info

Publication number: CN112413084A
Application number: CN202011192253.5A
Authority: CN
Inventors: 万丽萍; 王会丽; 杜枫; 王倡丽; 权军虎; 欧阳文龙
Original assignee: AECC Aero Engine Xian Power Control Technology Co Ltd
Current assignee: AECC Aero Engine Xian Power Control Technology Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-02-26
Anticipated expiration: 2040-10-30
Also published as: CN112413084B

Abstract

The invention may relate to the technical fields of relative position adjusting structures, cam installation and the like, and particularly relates to a cam installation assembly. The assembly comprises a shaft and a cam; a groove is formed in the circumferential surface of the shaft, at least two screw holes are formed in the cam, and screws are mounted in the screw holes; the cam is sleeved at the groove position of the shaft, and the position of the cam, which is provided with the screw hole, is positioned at the opening position side of the groove; the included angle between the plane where the axes of every two screw holes are located and the axis of the shaft is larger than zero degree. According to the technical scheme, the groove is machined in the circumferential surface of the shaft, the screw is arranged on the cam, the relative position relation between the cam and the shaft is limited through the relative position relation between the screw and the bottom surface of the groove, the adjustment is convenient, the structure is simple, and the realization is easy.

Description

Cam installation component

Technical Field

The invention may relate to the technical fields of relative position adjusting structures, cam installation and the like, and particularly relates to a cam installation assembly.

Background

A camshaft structure is often used in a mechanical control mechanism, and in use, the relative position between a cam and a mounting shaft thereof needs to be adjusted according to specific requirements, and an existing adjusting method generally includes that a circle of worm wheel is machined on the camshaft, a worm is mounted on the cam, and the relative rotation of the cam on the shaft is realized by rotating the worm, so that the position adjustment of the cam is realized, as shown in fig. 1. The prior art has complex structure, large volume and difficult processing.

Disclosure of Invention

The technical problems solved by the invention are as follows: the utility model provides a cam installation component, solves among the prior art cam and the relative position adjustment structure of axle complicated, bulky, the difficult technical problem who processes.

The technical scheme of the invention is as follows: a cam mounting assembly, said assembly comprising a shaft and a cam;

a groove is formed in the circumferential surface of the shaft, at least two screw holes are formed in the cam, and screws are mounted in the screw holes;

the cam is sleeved at the groove position of the shaft, and the position of the cam, which is provided with the screw hole, is positioned at the opening position side of the groove;

the included angle between the plane where the axes of every two screw holes are located and the axis of the shaft is larger than zero degree. According to the technical scheme, the groove is machined in the circumferential surface of the shaft, the screw is arranged on the cam, the relative position relation between the cam and the shaft is limited through the relative position relation between the screw and the bottom surface of the groove, the adjustment is convenient, the structure is simple, and the realization is easy.

Preferably, the bottom surface of the groove is a flat surface. The invention further discloses a structural form of the groove, thereby improving the implementability of the whole technical scheme and ensuring the technical effect of the technical scheme.

Preferably, the groove is radially through-going. The invention further discloses a structural form of the groove, thereby improving the implementability of the whole technical scheme and ensuring the technical effect of the technical scheme.

Preferably, the number of the screw holes is two, and an included angle between a plane where the axes of the two screw holes are located and the axis of the shaft is 90 degrees. The invention limits the number of the screw holes and the relative position relation between the screw holes and the axial direction, and the position relation can ensure the requirement of adjusting the relative position relation on one hand, and on the other hand, the radial distance of the bottom surfaces of the grooves of the two screws relative to the shaft under the position relation is large, so that the adjusting effect can be ensured.

Preferably, the end of the screw is spherical. The technical scheme can ensure the reliable contact of the screw end and the bottom surface of the groove under each relative position relationship, and simultaneously reduces the abrasion of the screw.

Preferably, a self-locking threaded sleeve is installed in the threaded hole. This technical scheme both had the guard action to the cam, had the locking effect again to the screw.

Preferably, a plurality of said cams are mounted on said shaft. The technical scheme provides an embodiment, the technical effect of the technical scheme can be embodied most, and the relative positions of different cams can be adjusted respectively.

Preferably, the cam comprises a plane surface, and the screw hole is formed in the plane surface. The technical scheme provides an embodiment, and the embodiment is convenient for processing screw holes and installing screws.

Drawings

FIG. 1 is a schematic view of a prior art cam mounting adjustment assembly;

FIG. 2 is a radial cross-sectional view of the assembly of the present invention;

FIG. 3 is a schematic view of a multiple cam mounting arrangement according to an embodiment;

FIG. 4 is a camshaft in an example of the present invention;

FIG. 5 is a front view of the embodiment of FIG. 3;

FIG. 6 is a sectional view of one of the cam mounting portions in the embodiment of FIG. 3;

fig. 7 shows the relative position of the cam and the camshaft after screwing in the upper screw and correspondingly unscrewing the lower screw.

The symbols in the figures are as follows: the cam shaft 1 is a cam shaft, the cam 2 is a cam, the screw hole 3a is a screw hole, the screw hole 3b is a screw hole, the self-locking screw sleeve 4a is a self-locking screw sleeve 4b, the screw 5a is a screw, the screw 5b is a screw, and the groove 6 is formed.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Fig. 2 is a radial sectional view of the assembly of the present invention, which mainly comprises a camshaft 1, a cam 2, two self-locking thread sleeves (4a, 4b), and two screws (5a, 5 b).

A groove 6 is formed in the circumferential surface of the camshaft 1, and the cam 2 is sleeved at the position of the groove 6 of the camshaft 1.

Two screw holes (3a, 3b) are processed on the plane of the cam 2, two self-locking thread sleeves (4a, 4b) are fixed with the cam 2 by respectively screwing in the two screw holes (3a, 3b), and two screws (5a, 5b) are respectively arranged inside the two self-locking thread sleeves (4a, 4 b).

The relative positional relationship of the cam 2 and the camshaft 1 is defined by adjusting the relative positional relationship of the two screws (5a, 5b) and the bottom surface of the groove 6.

Fig. 3 shows an embodiment of the present invention, in which three cams, i.e., a cam a, a cam B, and a cam C, are mounted on a cam shaft, each cam is mounted on the cam shaft by the method of the present invention, and the position of each cam on the cam shaft can be adjusted individually.

Fig. 4 shows a camshaft in an example of the present invention. The camshaft is provided with three cam mounting grooves, and the mounting grooves are respectively provided with a view A-A, B-B, C-C in cross section. The bottom surfaces of the mounting grooves are parallel to the axis, and the mutual angles of the bottom surfaces of the three mounting grooves are determined according to the actual use condition. As can be seen from fig. 6 and 7, the screwing in of the upper screw and the corresponding unscrewing of the lower screw make it possible to rotate the cam clockwise around the camshaft by an angle which is dependent on the screwing-in and unscrewing length of the screw.

Claims

1. A cam mounting assembly, said assembly comprising a shaft and a cam;

the included angle between the plane where the axes of every two screw holes are located and the axis of the shaft is larger than zero degree.

2. A cam mounting assembly according to claim 1 wherein the bottom surface of the recess is planar.

3. A cam mounting assembly according to claim 2 wherein said groove extends radially therethrough.

4. A cam mounting assembly according to claim 1 wherein there are two said screw holes and the plane of the axes of said two screw holes is at a 90 degree angle to the axis of said shaft.

5. A cam mounting assembly according to claim 1 wherein said screw end is spherical.

6. A cam mounting assembly according to claim 1, wherein a self-locking nut is mounted in the threaded bore.

7. A cam mounting assembly according to claim 1, wherein a plurality of said cams are mounted on said shaft.

8. A cam mounting assembly according to claim 1, wherein said cam includes a flat surface thereon, said threaded bore opening in said flat surface.