Adjustable high-hardness cam shaft

Abstract

The utility model discloses an adjustable high-hardness cam shaft, which comprises a rotating shaft, a convex ring is arranged on the rotating shaft, an inserting hole is formed in the convex ring and communicated with an inner hole of the rotating shaft, a threaded hole is formed in the bottom face of the inner hole, a convex rotating part is inserted into the convex ring, a connecting rod is arranged on the convex rotating part, a fixing hole is formed in one end of the connecting rod, and a bolt penetrates through the fixing hole to be fixed to the threaded hole in the inner hole. And the convex rotating part can rotate by taking the original point of the inner hole as the center. According to the utility model, the rotating shaft is provided with the jacks, and the convex rotating parts of different cam profiles can be inserted into the jacks to form cams with the convex rings on the rotating shaft, so that different cams are formed, replacement and adjustment in a test are facilitated, and the manufacturing cost and the time cost are greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of camshafts, and in particular relates to an adjustable high-hardness camshaft. Background Art

[0002] When testing camshafts for diesel engines, it is often necessary to replace camshafts with different cam profiles to achieve optimal power and fuel economy. However, the cams of manufactured camshafts are often not adjustable. If replaced, they must be remade, which consumes time and production costs. Utility Model Content

[0003] In view of this, the technical problem to be solved by the present invention is to provide an adjustable high-hardness camshaft, which solves the problem in the prior art that the cam of the manufactured camshaft cannot be adjusted or replaced.

[0004] In order to solve the above technical problems, the utility model discloses an adjustable high-hardness camshaft, comprising: a rotating shaft; a convex ring is provided on the rotating shaft, a socket is provided on the convex ring, the socket is connected to the inner hole of the rotating shaft, a threaded hole is provided on the bottom surface of the inner hole, a convex rotating part is inserted on the convex ring, a connecting rod is provided on the convex rotating part, a fixing hole is provided at one end of the connecting rod, a bolt passes through the fixing hole and is fixed to the threaded hole in the inner hole, the convex ring and the convex rotating part are combined to form a cam, and the convex rotating part can rotate with the origin of the inner hole as the center.

[0005] Furthermore, a threaded hole is provided on the convex rotating portion, the threaded hole passes through the inner and outer side surfaces thereof, the tail end of the threaded hole is a countersunk hole, and a screw is provided in the threaded hole.

[0006] Furthermore, the cross section of the convex turning portion is crescent-shaped, and the edges on both sides thereof are tangent to the surface of the convex ring.

[0007] Furthermore, the width of the above-mentioned insertion hole is equal to the width of the connecting rod.

[0008] Furthermore, the side wall of the above-mentioned insertion hole is the bottom surface of the inner hole.

[0009] Compared with the existing technology, this application can achieve the following technical effects:

[0010] The utility model provides an insertion hole on the rotating shaft, and the convex rotating parts with different cam profiles can be inserted into the insertion hole to form a cam with the convex ring on the rotating shaft, thereby forming different cams, which are convenient for replacement and adjustment during testing, greatly reducing the production and time costs.

[0011] Of course, any product implementing this application does not necessarily need to achieve all the technical effects described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 is a schematic diagram of a camshaft according to one embodiment of the present invention;

[0014] Figure 2 This is an exploded schematic diagram of a camshaft according to one embodiment of the present invention;

[0015] Figure 3 It is a schematic cross-sectional view of a camshaft according to one embodiment of the present invention.

[0016] Figure ID

[0017] Rotating shaft 1, convex ring 2, socket 3, inner hole 4, threaded hole 5, convex rotating part 6, connecting rod 7, fixing hole 8, bolt 9, countersunk hole 10, screw 11. DETAILED DESCRIPTION

[0018] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0019] Please refer to Figures 1 to 3 , Figure 1 is a schematic diagram of a camshaft according to one embodiment of the present invention; Figure 2 This is an exploded schematic diagram of a camshaft according to one embodiment of the present invention; Figure 3 It is a schematic cross-sectional view of a camshaft according to one embodiment of the present invention.

[0020] An adjustable high-hardness camshaft comprises: a rotating shaft 1; a convex ring 2 is provided on the rotating shaft 1, a socket 3 is provided on the convex ring 2, the socket 3 is communicated with the inner hole 4 of the rotating shaft 1, a threaded hole 5 is provided on the bottom surface of the inner hole 4, a convex rotating portion 6 is inserted on the convex ring 2, a connecting rod 7 is provided on the convex rotating portion 6, a fixing hole 8 is provided at one end of the connecting rod 7, a bolt 9 passes through the fixing hole 8 and is fixed to the threaded hole 5 in the inner hole 4, the convex ring 2 and the convex rotating portion 6 are combined to form a cam, and the convex rotating portion 6 can rotate around the origin of the inner hole 4.

[0021] A threaded hole 5 is provided on the convex rotating portion 6, which passes through its inner and outer side surfaces, and its tail end is a countersunk hole 10, and the threaded hole 5 is provided with a screw 11; the cross-section of the convex rotating portion 6 is crescent-shaped, and its two side edges are tangent to the surface of the convex ring 2; the width of the socket 3 is equal to the width of the connecting rod 7; the side wall of the socket 3 is the bottom surface of the inner hole 4.

[0022] Installation and adjustment process: the connecting rod 7 at one end of the convex rotating part 6 is inserted into the socket 3, the bolt 9 passes through the fixing hole 8 on the connecting rod 7 and is connected to the threaded hole 5 on the bottom surface of the inner hole 4, and then the screw 11 cooperates with the threaded hole 5 on the convex rotating part 6 so that the front end is against the surface of the convex ring 2, thereby fixing the convex rotating part 6 through axial and radial fixation.

[0023] To sum up, the utility model provides a socket 3 on the rotating shaft 1, and the convex rotating portion 6 with different cam profiles can be inserted into the socket 3 to form a cam with the convex ring 2 on the rotating shaft 1, thereby forming different cams, which is convenient for replacement and adjustment during testing, greatly reducing the production and time costs.

[0024] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. An adjustable high-hardness camshaft, comprising: shaft; It is characterized in that a convex ring is provided on the rotating shaft, a socket is provided on the convex ring, the socket is connected to the inner hole of the rotating shaft, a threaded hole is provided on the bottom surface of the inner hole, a convex rotating part is inserted on the convex ring, a connecting rod is provided on the convex rotating part, a fixing hole is provided at one end of the connecting rod, a bolt passes through the fixing hole and is fixed to the threaded hole in the inner hole, the convex ring and the convex rotating part are combined into a cam, and the convex rotating part can rotate with the origin of the inner hole as the center; a threaded hole is provided on the convex rotating part, the threaded hole passes through its inner and outer side surfaces, and its tail end is a countersunk hole, and a screw is provided in the threaded hole.

2. The adjustable high-hardness camshaft according to claim 1, characterized in that: The width of the socket is equal to the width of the connecting rod.

3. The adjustable high-hardness camshaft according to claim 1, characterized in that: The side wall of the insertion hole is the bottom surface of the inner hole.

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