阅读说明：本技术 一种绞珩刀具 (Cutter for reaming and honing ) 是由 李文 段昌凯 陈正伟 于 2020-05-29 设计创作，主要内容包括：本发明公开一种绞珩刀具,包括刀轴、切削结构,所述刀轴的周侧壁设有安装孔,切削结构安装于所述安装孔,所述切削结构具有相对的安装端及切削端,所述安装端容设在所述安装孔内,所述切削端显露在所述刀轴的周侧壁外,所述切削端用以在所述刀轴旋转时,对所述阶梯孔进行切削；其中,所述切削结构沿所述刀轴的径向可活动设置,以使得所述切削端突出于所述刀轴周侧壁的高度可调节。本发明公开的一种绞珩刀具,相对于现有技术,可以加工阶梯式孔,加工精度高。(The invention discloses a twisting and honing cutter, which comprises a cutter shaft and a cutting structure, wherein the peripheral side wall of the cutter shaft is provided with a mounting hole, the cutting structure is mounted in the mounting hole, the cutting structure is provided with a mounting end and a cutting end which are opposite, the mounting end is accommodated in the mounting hole, the cutting end is exposed out of the peripheral side wall of the cutter shaft, and the cutting end is used for cutting a stepped hole when the cutter shaft rotates; the cutting structure can be movably arranged along the radial direction of the cutter shaft, so that the height of the cutting end protruding out of the peripheral side wall of the cutter shaft can be adjusted. Compared with the prior art, the reaming and honing cutter disclosed by the invention can be used for machining stepped holes and is high in machining precision.)

1. A cutter for honing is used for processing a stepped hole, and is characterized by comprising:

the side wall of the cutter shaft is provided with a mounting hole; and the number of the first and second groups,

the cutting structure is arranged in the mounting hole and provided with a mounting end and a cutting end which are opposite, the mounting end is accommodated in the mounting hole, the cutting end is exposed out of the peripheral side wall of the cutter shaft, and the cutting end is used for cutting the stepped hole when the cutter shaft rotates;

the cutting structure can be movably arranged along the radial direction of the cutter shaft, so that the height of the cutting end protruding out of the peripheral side wall of the cutter shaft can be adjusted.

2. The honing tool of claim 1, wherein a mounting cavity is formed inside the cutter shaft, and the mounting hole communicates with the mounting cavity;

the cutter honing tool further comprises a movable rod, the movable rod is arranged in the installation cavity along the length direction of the cutter shaft in a movable mode, the movable rod is abutted to the installation end of the cutting structure through a wedge surface, and the movable rod drives the cutting structure to move along the radial direction of the cutter shaft in the installation cavity in a movable mode.

3. The honing tool of claim 2, wherein the tool shaft is provided with a sliding groove extending along a length direction thereof at a position spaced from the mounting hole, the sliding groove communicating with the mounting cavity;

the side wall of the movable rod is convexly provided with a driving block, and the driving block extends out of the mounting cavity and is connected with the sliding groove in a sliding manner.

4. The honing tool of claim 3, wherein the peripheral sidewall of the arbor is provided with external threads, the external threads being disposed adjacent to the runner;

the cutter honing tool further comprises an adjusting nut, wherein the adjusting nut is in threaded connection with the external threads and is abutted to the driving block, so that the driving block and the movable rod are adjusted to move in the moving distance through adjusting the screwing depth between the adjusting nut and the external threads.

5. The honing tool of claim 4, wherein the adjusting nut has an outer surface provided with angle scale marks.

6. The honing tool of claim 1, wherein said cutting structure comprises a mounting base and a sanding strip removably mounted to one end of said mounting base;

the emery stick constitutes the cutting end, the one end that the mount pad kept away from the emery stick constitutes the installation end.

7. The honing tool of any one of claims 1 to 6, wherein a plurality of cutting structures are provided along a circumferential direction of the tool shaft to form a cutting structure group.

8. The honing tool of claim 7, wherein said plurality of cutting structures are spaced apart along the length of said arbor.

9. The honing tool of claim 2, wherein a plurality of cutting structures are provided along a circumferential direction of the cutter shaft to form a cutting structure group, and two cutting structure groups are provided respectively near opposite ends of the cutter shaft;

the movable rod is provided with two corresponding to the two cutting structures.

10. The honing tool of claim 1, wherein the honing tool further comprises a guide bar, the guide bar is disposed on a peripheral sidewall of the cutter shaft and extends along a length direction of the cutter shaft;

be equipped with the chip groove on the week side wall of arbor, the chip groove is followed arbor length direction extends.

Technical Field

The invention relates to the technical field of cutting tools, in particular to a cutter for reaming and honing.

Background

The engine is used as the heart of the automobile, and the manufacturing process of the camshaft hole in the engine is continuously improved along with the improvement of the performance of the engine. The camshaft rotates in the camshaft hole ceaselessly, and the working environment is very severe, so the requirement on the processing is very severe, and the required processing precision is very high. The precision of the existing fine boring processing can not stably meet the requirement, and the stepped camshaft hole is processed step by step for multiple times.

Disclosure of Invention

The invention mainly aims to provide a twisting and honing cutter, aiming at solving the technical problems that the twisting and honing cutter cannot simultaneously machine stepped holes and has low machining precision in the prior art.

In order to achieve the above object, the present invention provides a honing tool, comprising:

the side wall of the cutter shaft is provided with a mounting hole; and the number of the first and second groups,

the cutting structure is arranged in the mounting hole and provided with a mounting end and a cutting end which are opposite, the mounting end is accommodated in the mounting hole, the cutting end is exposed out of the peripheral side wall of the cutter shaft, and the cutting end is used for cutting the stepped hole when the cutter shaft rotates;

the cutting structure can be movably arranged along the radial direction of the cutter shaft, so that the height of the cutting end protruding out of the peripheral side wall of the cutter shaft can be adjusted.

Optionally, an installation cavity is formed inside the cutter shaft, and the installation hole is communicated with the installation cavity;

the cutter honing tool further comprises a movable rod, the movable rod is arranged in the installation cavity along the length direction of the cutter shaft in a movable mode, the movable rod is abutted to the installation end of the cutting structure through a wedge surface, and the movable rod drives the cutting structure to move along the radial direction of the cutter shaft in the installation cavity in a movable mode.

Optionally, a sliding groove extending along the length direction of the cutter shaft is formed in the position, spaced from the mounting hole, of the cutter shaft, and the sliding groove is communicated with the mounting cavity;

the side wall of the movable rod is convexly provided with a driving block, and the driving block extends out of the mounting cavity and is connected with the sliding groove in a sliding manner.

Optionally, the peripheral side wall of the cutter shaft is provided with an external thread, and the external thread is arranged adjacent to the chute;

the cutter honing tool further comprises an adjusting nut, wherein the adjusting nut is in threaded connection with the external threads and is abutted to the driving block, so that the driving block and the movable rod are adjusted to move in the moving distance through adjusting the screwing depth between the adjusting nut and the external threads.

Optionally, the outer surface of the adjusting nut is provided with angle scale lines.

Optionally, the cutting structure comprises a mounting seat and a sand bar detachably mounted at one end of the mounting seat;

the emery stick constitutes the cutting end, the one end that the mount pad kept away from the emery stick constitutes the installation end.

Optionally, the plurality of cutting structures are arranged along the circumferential direction of the cutter shaft to form a cutting structure group.

Optionally, the cutting structure group is provided in plurality at intervals along the length direction of the cutter shaft.

Optionally, a plurality of cutting structures are arranged along the circumferential direction of the cutter shaft to form a cutting structure group, and two cutting structure groups are respectively arranged near two opposite ends of the cutter shaft;

the movable rod is provided with two corresponding to the two cutting structures.

Optionally, the honing tool further comprises a guide bar, wherein the guide bar is arranged on the peripheral side wall of the cutter shaft and extends along the length direction of the cutter shaft;

be equipped with the chip groove on the week side wall of arbor, the chip groove is followed arbor length direction extends.

In the technical scheme provided by the invention, a mounting hole is formed in the peripheral side wall of the cutter shaft, the cutting structure is provided with a mounting end and a cutting end which are opposite, the cutting structure is movably arranged in the mounting hole, the mounting end is accommodated in the mounting hole, and the cutting end is exposed out of the peripheral side wall of the cutter shaft and is used for cutting the stepped hole when the cutter shaft rotates. The cutting end of the cutting structure forms at least two cutting radiuses on the cutter shaft by adjusting the cutting structure along the radial direction of the cutter shaft. Compared with the prior art, the stepped hole can be machined at one time, and machining precision is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of a honing tool provided by the present invention;

FIG. 2 is a schematic structural view of the movable bar of FIG. 1;

FIG. 3 is a schematic diagram of the cutting structure of FIG. 1;

fig. 4 is a schematic structural view of the adjusting nut in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Cutter for reaming and honing	106	Mounting cavity
101	Cutter shaft	107	Movable rod
				102	Mounting hole	108	Wedge-shaped surface
103	Cutting structure	109	Adjusting nut
				104	Mounting end	110	Conducting bar
105	Cutting tip	111	Chip groove

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. Also, the technical solutions in the embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.

The engine is used as the heart of the automobile, and the manufacturing process of the camshaft hole in the engine is continuously improved along with the improvement of the performance of the engine. The camshaft rotates in the camshaft hole ceaselessly, and the working environment is very severe, so the requirement on the processing is very severe, and the required processing precision is very high. The precision of the existing fine boring processing can not stably meet the requirement, and the stepped camshaft hole is processed step by step for multiple times.

In view of this, the present invention provides a honing tool, which aims to solve the technical problems in the prior art that a honing tool cannot simultaneously machine stepped holes and has low machining precision. Fig. 1 to 4 show an embodiment of a honing tool according to the present invention.

The present embodiment provides a honing tool 100 including:

the cutter shaft 101, the peripheral side wall of the said cutter shaft 101 has mounting holes 102; and the number of the first and second groups,

a cutting structure 103 mounted in the mounting hole 102, wherein the cutting structure 103 has a mounting end 104 and a cutting end 105 opposite to each other, the mounting end 104 is accommodated in the mounting hole 102, the cutting end 105 is exposed outside the peripheral sidewall of the arbor 101, and the cutting end 105 is used for cutting the stepped hole when the arbor 101 rotates;

the cutting structure 103 is movably disposed along the radial direction of the cutter shaft 101, so that the height of the cutting end 105 protruding from the peripheral side wall of the cutter shaft 101 is adjustable.

In the technical solution provided in this embodiment, a mounting hole 102 is formed in a peripheral sidewall of the arbor 101, the cutting structure 103 has a mounting end 104 and a cutting end 105 which are opposite to each other, the mounting end 104 is accommodated in the mounting hole 102, and the cutting end 105 is exposed outside the peripheral sidewall of the arbor 101 to cut the stepped hole when the arbor 101 rotates. By adjusting the cutting structure 103 in the radial direction of the arbor 101, the cutting end 105 of the cutting structure 103 forms at least two cutting radii on the arbor 101. Compared with the prior art, the stepped hole can be machined at one time, and machining precision is high.

Further, in this embodiment, an installation cavity 106 is formed inside the cutter shaft 101, the installation hole 102 communicates with the installation cavity 106, the length of the installation cavity 106 is equivalent to that of the cutter shaft 101, the movable rod 107 is movably installed in the installation cavity 106, and the movable rod 107 is abutted to the installation end 104 of the cutting structure 103 through a wedge surface 108. The cross section of the movable rod 107 is arranged in a tapered shape which is gradually reduced or increased along the length direction of the cutter shaft 101, and the tapered surface of the movable rod 107 forms the wedge-shaped surface 108. The movable rod 107 moves in the installation cavity 106 to drive the cutting structure 103 to move along the radial direction of the cutter shaft 101. So that the height of the cutting end 105 protruding from the peripheral side wall of the cutter shaft 101 can be adjusted.

Further, in this embodiment, a sliding groove extending along the length direction of the knife shaft 101 is disposed at a position spaced from the mounting hole 102, the sliding groove is communicated with the mounting cavity 106, and a driving block protruding from the peripheral side wall of the movable rod 107 is slidably connected to the sliding groove and protrudes from the mounting cavity 106. When the movable rod 107 moves along the installation cavity 106, the driving block convexly arranged on the peripheral side wall of the movable rod 107 moves along the sliding groove. The driving block is designed to drive the movable rod 107 along the mounting cavity 106, and may be pushed by hand to move along the sliding groove to drive the movable rod 107, or may be driven by other driving methods to move along the sliding groove.

Further, in the present embodiment, the peripheral side wall of the cutter shaft 101 is provided with an external thread, and the external thread is disposed adjacent to the sliding groove; the honing tool 100 further comprises an adjusting nut 109, wherein the adjusting nut 109 is in threaded connection with the external thread and is in butt joint with the driving block, so that the driving block and the movable rod 107 can be adjusted in the moving distance by adjusting the screwing depth between the adjusting nut 109 and the external thread. Through manual rotation adjusting nut 109, the movable rod 107 with between the adjusting nut 109 through the driving block is connected, adjusting nut 109 passes through the driving block drive movable rod 107 horizontal migration turns into axial linear motion with rotary motion. Therefore, the manual adjustment of the adjusting nut 109 can realize the radial expansion and contraction of the cutting structure 103 along the cutter shaft 101, and the operation is convenient and simple.

Further, in this embodiment, the outer surface of the adjusting nut is provided with angle scale marks. The rotation angle of the adjusting nut 109 can be adjusted according to the angle scale lines, so that the cutting structure 103 can be precisely controlled to expand and contract along the radial direction of the cutter shaft 101, and the processing precision is improved.

Further, in this embodiment, the cutting structure 103 includes a mounting seat and a sand bar detachably mounted at one end of the mounting seat, the sand bar constitutes the cutting end 105, and the end of the mounting seat far away from the sand bar constitutes the mounting end 104.

Further, in the present embodiment, the plurality of cutting structures 103 are disposed along the circumferential direction of the cutter shaft 101 to form a cutting structure group. The arrangement of the plurality of cutting structures 103 can effectively improve the cutting efficiency, reduce the use strength of a single cutting structure 103, and prolong the service life of the cutting structure 103.

Further, in this embodiment, the plurality of cutting structure groups are provided at intervals along the longitudinal direction of the cutter shaft. The plurality of groups of the sand bars are arranged and the gaps are reserved, so that the sand bars can be conveniently mounted and dismounted, and the sand bars are prevented from being too long and easily broken.

Further, in this embodiment, a plurality of cutting structures 103 are arranged along the circumferential direction of the cutter shaft 101 to form a cutting structure group, and two cutting structure groups are respectively arranged near two opposite ends of the cutter shaft 101; two movable rods 107 are arranged corresponding to the two cutting structures 103. By adjusting the movable rod 107 to move horizontally, the cutting structure 103 is moved along the radial direction of the cutter shaft 101. In the same way, the movable rod 107 at the other end is adjusted to drive the cutting structure 103 to move, so that the cutting diameter is changed, and the cutting structures 103 with two different diameters are arranged on a twisting and honing tool 100, so that the simultaneous twisting and honing of the apertures with two different diameters in the camshaft hole is realized.

It should be noted that the honing tool 100 further includes a guide bar 109, and the guide bar 109 is disposed on a peripheral side wall of the cutter shaft 101 and extends along a length direction of the cutter shaft 101. The purpose of the guide bar is to guide the honing tool 100 to enter and exit the camshaft hole when the honing tool 100 cuts the camshaft hole. Be equipped with chip groove 110 on the week side wall of arbor 101, the chip groove is followed arbor length direction extends. The chip grooves are designed to discharge cutting chips and reduce the weight of the cutter shaft 101.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.