CN216705976U

CN216705976U - Deep groove processing tool for crankshaft

Info

Publication number: CN216705976U
Application number: CN202122228644.4U
Authority: CN
Inventors: 马志鸿; 周焕军; 吴凡
Original assignee: Shanghai Marine Crankshaft Co ltd
Current assignee: Shanghai Marine Crankshaft Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-06-10
Anticipated expiration: 2031-09-14

Abstract

The utility model discloses a crankshaft deep groove machining tool which comprises a tool bar and a circular blade fixed at the lower end of the tool bar, wherein the deep groove machining tool is of a symmetrical structure, the tool bar is divided into a handle part and a rod part extending downwards from the middle position of the lower end of the handle part, the rod part is a narrow flat rod which is narrower than the handle part and the side surfaces of two sides of the rod part are parallel to each other, the circular blade is fixed at the lower end of the rod part, and the two sides of the circular blade exceed the side surfaces of the two sides of the rod part to form an arc cutting edge. The tool has the advantages of being suitable for machining two end faces of the deep groove of the crankshaft without repeatedly disassembling the tool and determining the direction of the tool.

Description

Deep groove processing tool for crankshaft

Technical Field

The utility model relates to a cutter, in particular to a crankshaft deep groove machining cutter used in machining of a marine crankshaft.

Background

As shown in fig. 1, a U-shaped deep groove 12 is formed in a journal 11 of a partial type crankshaft 10. Three parts are needed to be processed for processing the U-shaped deep groove, namely end surfaces 13 on two sides of the deep groove, a bottom surface 14 of the deep groove and an arc 15 between the end surface and the bottom surface of the deep groove.

When the existing cutter 20 is used for machining the U-shaped deep groove, the cutter directions need to be distinguished, and when a right-side end face is machined, an arc-shaped cutting edge needs to be rightwards; when the left side end face is machined, the arc cutting edge is required to be leftwards, so that the cutter needs to be repeatedly assembled and disassembled, the datum plane needs to be repeatedly verified, and whether the inclined surface of the cutter collides with a workpiece or not needs to be calculated when the end face and the arc are machined.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a crankshaft deep groove machining tool which is suitable for machining two end faces of a crankshaft deep groove without repeatedly disassembling the tool and determining the direction of the tool so as to overcome the defects in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a bent axle processing deep trouth cutter comprises cutter arbor and the circular blade of fixing at the cutter arbor lower extreme, its characterized in that: the deep groove cutter is of a symmetrical structure, the cutter bar is divided into a handle part and a rod part extending downwards from the middle position of the lower end of the handle part, the rod part is a narrow flat rod, the side surfaces of the handle part and the two sides of the narrow flat rod are parallel to each other, and the circular blade is fixed at the lower end of the rod part and the two sides of the circular blade exceed the side surfaces of the two sides of the rod part to form an arc cutting edge.

In a preferred embodiment of the present invention, a step fixing portion is provided at an upper corner of a lower end of the rod portion, and the circular blade is fixed to the step fixing portion.

In a preferred embodiment of the present invention, a spacer is further disposed on the step fixing portion and below the circular blade. The gasket is added, so that impact force generated when the cutter is machined can be relieved, and the service life of the cutter can be prolonged.

In a preferred embodiment of the utility model, the upper surface of the circular blade is flush with the upper surface of the shank.

In a preferred embodiment of the utility model, the narrow flat bar has a rectangular cross section throughout its body.

By adopting the structure, the utility model has the following advantages:

1. the end faces on two sides are machined, the cutter does not need to be repeatedly disassembled, and the direction of the cutter does not need to be determined.

2. The two sides of the arc cutting edge of the cutter can be used for processing end faces, so that the processing efficiency can be improved, the processing time can be saved, and the groove width processing precision can be improved.

3. Whether the cutter can process the deep groove to be processed can be known only by measuring the length of the middle rod part.

Drawings

FIG. 1 is a schematic view of a prior art tool for machining deep grooves;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a schematic view of the tool of the present invention machining deep grooves.

Detailed Description

As shown in fig. 2 and 3, the tool for machining a deep groove in a crankshaft of the present invention includes a tool holder 100 and a circular blade 200 fixed to a lower end of the tool holder.

The deep flute cutting tool has a symmetrical structure in which the tool holder 100 is divided into a shank 110 and a shank 120 extending downward from a middle position of a lower end of the shank 110, and the shank 120 is a narrow flat bar which is narrower than the shank 110 and has side surfaces at both sides parallel to each other. The cross section of the whole body of the narrow flat rod is rectangular, the width of the narrow side rod is small, the narrow side rod can go deep into a deep groove of the crankshaft to be processed, and the narrow side rod is large enough in thickness so as to provide firm supporting force for the circular blade during processing. In the present embodiment, the side surface of the shank 110 is in a circular arc transition with the side surface of the shank 120.

The upper corner of the lower end of the rod 120 is provided with a step fixing position 121, the circular blade 200 is fixed on the step fixing position 121 through a bolt 301, and two sides of the circular blade 200 exceed the side surfaces of two sides of the rod 120, so that circular arc blades 201 are formed on two sides of the rod. The upper surface of the circular blade 200 is flush with the upper surface of the shank 120.

The step fixing portion 121 is further provided with a spacer 122 which is padded below the circular blade 200. The gasket is added, so that impact force generated when the cutter is machined can be relieved, and the service life of the cutter can be prolonged.

With the above structure, as shown in fig. 4, the tool 20 of the present invention has the following advantages when machining the deep groove 12 of the crankshaft 10:

2. The arc cutting edge both sides of this cutter all can process the terminal surface, can improve machining efficiency, save process time, also be favorable to improving the groove width machining precision.

3. Whether the cutter can process the deep groove to be processed can be known only by measuring the length of the middle rod part, and the cutter with the rod part long enough can be directly selected according to the depth of the deep groove to be processed so as to avoid friction between the end faces of two sides of the deep groove and the handle part of the cutter.

The above is the journal contact ratio detection method of the marine crankshaft of the present invention, however, it should be recognized by those skilled in the art that the above embodiments are only used for illustrating the present invention and are not used as limitations of the present invention, and changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a bent axle processing deep trouth cutter comprises cutter arbor and the circular blade of fixing at the cutter arbor lower extreme, its characterized in that: the deep groove cutter is of a symmetrical structure, the cutter bar is divided into a handle part and a rod part extending downwards from the middle position of the lower end of the handle part, the rod part is a narrow flat rod, the side surfaces of the handle part and the two sides of the narrow flat rod are parallel to each other, and the circular blade is fixed at the lower end of the rod part and the two sides of the circular blade exceed the side surfaces of the two sides of the rod part to form an arc cutting edge.

2. The deep groove tool for machining the crankshaft according to claim 1, wherein: the upper corner of the lower end of the rod part is provided with a step fixing position, and the circular blade is fixed on the step fixing position.

3. The deep groove tool for machining the crankshaft according to claim 2, wherein: and a gasket padded below the circular blade is further arranged on the step fixing position.

4. The deep groove tool for machining the crankshaft according to claim 3, wherein: the upper surface of the circular blade is flush with the upper surface of the rod part.

5. The deep groove tool for crankshaft machining according to claim 1, wherein: the cross section of the whole body of the narrow flat rod is rectangular.